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  • 51.
    Cöster, Maria C.
    et al.
    Department of Orthopedics and Clinical Sciences, SUS Malmö, Malmö, Sweden.
    Nilsdotter, Anna
    Sahlgrenska University Hospital, Gothenburg, Sweden.
    Brudin, Lars
    Department of Clinical Physiology, Kalmar Hospital, Kalmar, Sweden & Department of Medicine and Health Sciences, Linköping University Hospital, Linköping, Sweden.
    Bremander, Ann
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Department of Clinical Sciences, Lund, Section of Rheumatology, Lund University, Lund, Sweden.
    Minimally important change, measurement error, and responsiveness for the Self-Reported Foot and Ankle Score2017Inngår i: Acta Orthopaedica, ISSN 1745-3674, E-ISSN 1745-3682, Vol. 88, nr 3, s. 300-304Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background and purpose: Patient-reported outcome measures (PROMs) are increasingly used to evaluate results in orthopedic surgery. To enhance good responsiveness with a PROM, the minimally important change (MIC) should be established. MIC reflects the smallest measured change in score that is perceived as being relevant by the patients. We assessed MIC for the Self-reported Foot and Ankle Score (SEFAS) used in Swedish national registries.

    Patients and methods: Patients with forefoot disorders (n = 83) or hindfoot/ankle disorders (n = 80) completed the SEFAS before surgery and 6 months after surgery. At 6 months also, a patient global assessment (PGA) scaleas external criterionwas completed. Measurement error was expressed as the standard error of a single determination. MIC was calculated by (1) median change scores in improved patients on the PGA scale, and (2) the best cutoff point (BCP) and area under the curve (AUC) using analysis of receiver operating characteristic curves (ROCs).

    Results: The change in mean summary score was the same, 9 (SD 9), in patients with forefoot disorders and in patients with hindfoot/ankle disorders. MIC for SEFAS in the total sample was 5 score points (IQR: 2-8) and the measurement error was 2.4. BCP was 5 and AUC was 0.8 (95% CI: 0.7-0.9).

    Interpretation: As previously shown, SEFAS has good responsiveness. The score change in SEFAS 6 months after surgery should exceed 5 score points in both forefoot patients and hindfoot/ankle patients to be considered as being clinically relevant.

    © 2017 The Author(s). Published by Taylor & Francis on behalf of the Nordic Orthopedic Federation.

  • 52.
    Dalzochio, Marina Schmidt
    et al.
    Laboratório de Ecologia e Evolução, Universidade do Vale do Taquari – UNIVATES, Lajeado, Brazil.
    Périco, Eduardo
    Laboratório de Ecologia e Evolução, Universidade do Vale do Taquari – UNIVATES, Lajeado, Brazil.
    Renner, Samuel
    Laboratório de Ecologia e Evolução, Universidade do Vale do Taquari – UNIVATES, Lajeado, Brazil.
    Sahlén, Göran
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Description of the final stadium larva of Erythrodiplax media (Odonata: Libellulidae) with preliminary key to known South American larvae in the genus2018Inngår i: International Journal of Odonatology, ISSN 1388-7890, Vol. 21, nr 2, s. 93-104Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The larva of Erythrodiplax media is described and illustrated based on two exuviae of reared larvae and one final stadium larva collected in Xangri-lá, State of Rio Grande do Sul, Brazil. The larva of E. media can be distinguished from other species of Erythrodiplax by the presence of lateral spines on S8 and S9, the number of premental setae (n = 22), palpal setae (n = 7) and by the mandibular formula. We also provide a preliminary key to known South American larvae in the genus. © 2018 Worldwide Dragonfly Association.

  • 53.
    David, Andrei
    et al.
    Aalborg Univ, Dept Planning, Copenhagen, Denmark.
    Vad Mathiesen, Brian
    Aalborg Univ, Dept Planning, Copenhagen, Denmark.
    Averfalk, Helge
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Werner, Sven
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lund, Henrik
    Aalborg Univ, Dept Planning, Aalborg, Denmark.
    Heat Roadmap Europe: Large-Scale Electric Heat Pumps in District Heating Systems2017Inngår i: Energies, ISSN 1996-1073, E-ISSN 1996-1073, Vol. 10, nr 4, artikkel-id 578Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Heat Roadmap Europe (HRE) studies estimated a potential increase of the district heating (DH) share to 50% of the entire heat demand by 2050, with approximately 25–30% of it being supplied using large-scale electric heat pumps. This study builds on this potential and aims to document that such developments can begin now with technologies currently available. We present a database and the status of the technology and its ability of expansion to other European locations by reviewing experiences aimed at further research or application in the heating industry. This is based on a survey of the existing capacity of electric large-scale heat pumps with more than 1 MW thermal output, operating in European DH systems. The survey is the first database of its kind containing the technical characteristics of these heat pumps, and provides the basis for the analysis of this paper. By quantifying the heat sources, refrigerants, efficiency and types of operation of 149 units with 1580 MW of thermal output, the study further uses this data to analyze if the deployment of this technology on a large-scale is possible in other locations in Europe. It finally demonstrates that the technical level of the existing heat pumps is mature enough to make them suitable for replication in other locations in Europe.

  • 54.
    Diehl, Sebastian
    et al.
    Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden & Integrated Science Lab (IceLab), Umeå University, Umeå, Sweden.
    Thomsson, Gustaf
    Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden.
    Kahlert, Maria
    Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden.
    Guo, Junwen
    Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden.
    Karlsson, Jan
    Department of Ecology and Environmental Sciences, Umeå University, Umeå, Sweden.
    Liess, Antonia
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Inverse relationship of epilithic algae and pelagic phosphorusin unproductive lakes: Roles of N2 fixers and light2018Inngår i: Freshwater Biology, ISSN 0046-5070, E-ISSN 1365-2427, Vol. 63, nr 7, s. 662-675Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    1. Phosphorus (P) often limits the biomass of primary producers in freshwater lakes. However, in unproductive northern lakes, where anthropogenic nitrogen (N) deposition is low, N instead of P can limit primary producers. In addition, light can be limiting to primary producers at high concentrations of coloured dissolved organic matter (cDOM), as cDOM is the major determinant of light penetration in these lakes.

    2. To address resource limitation of epilithic algal biomass, we repeatedly sampled epilithon (periphyton on stony substrata) in 20 lakes covering a large, correlated cDOM and N-deposition gradient across boreal and subarctic Sweden. Across these lakes, pelagic total N (TN) and total P (TP) were positively correlated, and benthic light supply was negatively correlated, with cDOM. Microscopically determined algal biovolume and epilithic carbon (C), N and P were subsequently regressed against benthic light supply and pelagic TN and TP.

    3. Patterns in epilithic biovolume were driven by N2-fixing cyanobacteria, which accounted for 2%–90% of total epilithic biovolume. Averaged over the growing season, epilithic algal biovolume, C and N were negatively related to TP and positively to TN, and were highest in the clearest, most phosphorus-poor lakes, where epilithon was heavily dominated by potentially N2-fixing cyanobacteria.

    4. A structural equation model supports the hypothesis that cDOM had two counteracting effects on total epilithic algal biovolume: a positive one by providing N to algae that depend on dissolved N for growth, and a negative one by shading N2-fixing cyanobacteria, with the negative effect being somewhat stronger.

    5. Together, these findings suggest that (1) light and N are the main resources limiting epilithic algal biomass in boreal to subarctic Swedish lakes, (2) epilithic cyanobacteria are more competitive in high-light and low-nitrogen environments, where their N2-fixing ability allows them to reach high biomass, and (3) epilithic N increases with N2 fixer biomass and is—seemingly paradoxically—highest in the most oligotrophic lakes. © 2018 John Wiley & Sons Ltd

  • 55.
    Dimkovski, Zlate
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lööf, Pär-Johan
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Dumbreville, Lucas
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap. École nationale d'ingénieurs de Saint-Étienne (ENISE), Saint-Étienne, France.
    Rosén, Bengt Göran
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Nilsson, Per
    Volvo Group Trucks Technology, Gothenburg, Sweden.
    Functional Parameters Screening for Predicting Wear between Two Cylindrical Surfaces with Different Finishes2017Inngår i: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts, 2017, s. 75-76Konferansepaper (Fagfellevurdert)
  • 56.
    Dimkovski, Zlate
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lööf, Pär-Johan
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Rosén, Bengt Göran
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Nilsson, Per
    Volvo Group Trucks Technology, Gothenburg, Sweden.
    Functional parameter screening for predicting durability of rolling sliding contacts with different surface finishes2018Inngår i: Surface Topography: Metrology and Properties, ISSN 2051-672X, Vol. 6, nr 2, artikkel-id 024005Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The reliability and lifetime of machine elements such as gears and rolling bearings depend on their wear and fatigue resistance. In order to screen the wear and surface damage, three finishing processes: (i) brushing, (ii) manganese phosphating and (iii) shot peening were applied on three disc pairs and long-term tested on a twin-disc tribometer. In this paper, the elastic contact of the disc surfaces (measured after only few revolutions) was simulated and a number of functional and roughness parameters were correlated. The functional parameters consisted of subsurface stresses at different depths and a new parameter called 'pressure spikes' factor'. The new parameter is derived from the pressure distribution and takes into account the proximity and magnitude of the pressure spikes. Strong correlations were found among the pressure spikes' factor and surface peak/height parameters. The orthogonal shear stresses and Von Mises stresses at the shallowest depths under the surface have shown the highest correlations but no good correlations were found when the statistics of the whole stress fields was analyzed. The use of the new parameter offers a fast way to screen the durability of the contacting surfaces operating at similar conditions. © 2018 IOP Publishing Ltd.

  • 57.
    Dimkovski, Zlate
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Tomanik, Eduardo
    MAHLE Metal Leve, Jundiai, Sao Paulo, Brazil; University of Sao Paulo, Sao Paulo, Brazil.
    Grange, Simon
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap. École nationale d'ingénieurs de Saint-Étienne (ENISE), Saint-Étienne, France.
    Epinat, Flavien
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap. École nationale d'ingénieurs de Saint-Étienne (ENISE), Saint-Étienne, France.
    Novel Testing Methods for Screening the Tribological Performance of Ring-Liner Surfaces2017Inngår i: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts, 2017, s. 59-60Konferansepaper (Fagfellevurdert)
  • 58.
    Dimkovski, Zlate
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Tomanik, Eduardo
    University of Sao Paulo, Sao Paulo, Brazil.
    Grange, Simon
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap. ENISE, St. Étienne, France.
    Epinat, Flavien
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap. ENISE, St. Étienne, France.
    Novel testing methods for screening the tribological performance of ring-liner surfaces2018Inngår i: Surface Topography: Metrology and Properties, E-ISSN 2051-672X, Vol. 6, nr 3, artikkel-id 034017Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The piston system accounts for about the half of the frictional losses of internal combustion engines and requires special testing methods to understand and improve its function. The most common way to screen the surface performance is to rub ring/liner segments against each other in a reciprocating manner. However, short reciprocating tests have intrinsic low sliding speeds, unable to reach the mixed/hydrodynamic regimes found in the engine, especially at the mid-stroke. This paper presents a rotating test for the oil control ring, which has the largest frictional losses of all other rings. Both reciprocating and rotating tests were conducted using different in-house developed modules and fixtures. Twin land oil control rings against liners with two different finishes commonly used in heavy duty diesel truck engines were tested under similar loads and speeds as in a real engine. Engine oil 5W-30 and room temperature was used for all the tests. Sliding speed, load, friction force and electrical resistance were recorded during the tests. The results show a clear discrimination of the different liner finishes depending on the lubrication regime present.

  • 59.
    Drab, Beata
    et al.
    Institute of medicine, University of Gothenburg, Primary Health Care Unit, Department of Public Health and Community Medicine, Gothenburg, Sweden.
    Aili, Katarina
    Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI). RandD Spenshult, Halmstad, Sweden & Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden.
    Haglund, Emma
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). RandD Spenshult, Halmstad, Sweden.
    Bergman, Stefan
    Institute of medicine, University of Gothenburg, Primary Health Care Unit, Department of Public Health and Community Medicine, Gothenburg, Sweden & RandD Spenshult, Halmstad, Sweden.
    Chronic pain and sick leave in a 21-year follow up2019Inngår i: Annals of the Rheumatic Diseases, ISSN 0003-4967, E-ISSN 1468-2060, Vol. 78, nr Suppl 2, s. 122-122Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: Chronic musculoskeletal pain (CMP) is a common cause of disability and impaired quality of life. In Sweden, chronic pain and mental illness are major causes of sick leave. But sick leave itself is also proposed as a risk factor for prolonged sick leave and disability pension.

    Objectives: To study CMP and sick leave as potential risk factors for long term sick leave or disability pension in a 21 year follow up of a general population cohort.

    Methods: In a cohort study, with a baseline survey in 1995, 1466 individuals aged 20-67 years were followed for 3 years and 691 for 21 years, or up to the age of 67. CMP (>3 months duration) was reported on a pain mannequin. Sick leave and disability pension were self-reported. Mental health was measured by the mental health (MH) score of the SF-36 health status, and categorized into tertiaries (best, medium and worst). CMP, sick leave, and mental health at baseline, were studied as potential predictors for long term sick leave (disability pension or sick leave >3 months) at a 3 and 21 year follow up. Other potential predictors (socioeconomic group, education, and immigrant status) were introduced in multiple regression analyzes but did not add to the results and were removed from the final models, which were controlled for age and sex.

    Results: CMP and mental health predicted long term sick leave at the 3 year follow up (OR 2.11, p=0.010 and OR 3.52, p<0.001). Mental health (OR 1.92, p=0.046), but not CMP (OR 0.77, p=0.409), was also a predictor at the 21 year follow up. Sick leave >3 months, irrespectively if due to pain or not, predicted long term sick leave both at the 3 and the 21 year follow up (Table). Sick leave for ≤3 months also predicted long term sick leave at both follow ups when due to pain (OR 2.70, p=0.008 and OR 2.78, p=0.012), but not when due to other causes (OR 1.52, p=0.212 and OR 1.17, p=0.606).

    Conclusion: Sick leave and especially sick leave due to pain predicted long term sick leave up to 21 years later, independently of pain status or mental health at baseline. It is thus important to early identify individuals at risk and minimize sick leave by providing proper rehabilitation.

    © Drab, Aili, Haglund & Bergman 2019. No commercial re-use. See rights and permissions. Published by BMJ.

  • 60.
    El-Ghoul, Zoel-Fikar
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
    John, Shobin
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
    Dimkovski, Zlate
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lööf, Pär-Johan
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lundmark, Jonas
    Applied Nano Surfaces AB, Uppsala, Sweden.
    Mohlin, Johan
    Gnutti Carlo Sweden AB, Gothenburg, Sweden.
    Wear Analysis of Pin and Roller Surfaces2017Inngår i: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts, 2017, s. 190-192Konferansepaper (Fagfellevurdert)
  • 61.
    Eriksson, Lars
    et al.
    Jönköping University, Jönköping, Sweden.
    Rosén, Bengt Göran
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Bergman, Martin
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Affective surface engineering- using soft and hard metrology to measure the Sensation and perception in surface properties2018Inngår i: Proceedings of NordDesign: Design in the Era of Digitalization, NordDesign 2018, The Design Society , 2018Konferansepaper (Fagfellevurdert)
    Abstract [en]

    New surface treatments, novel material developments, and improved quality control procedures and advanced metrology instrumentation create a possibility to further develop competitiveness by the selection of “optimal” surface features”, to a product. The customers first apprehension of a product and the creation of desire is a very complex, but tempting process to learn more about. The interaction between the added quantitative- and the qualitative direct impressions with the customers known and unknown functional demands, social background, and expectations results in sensation and perception, partly possible to quantify and to great extent impossible to pin-down as numbers. Customer sensation and perception are much about psychological factors. There has been a strong industrial- and academic need and interest for methods and tools to quantify and linking product properties to the human response but a lack of studies of the impact of surfaces. This paper aims to introduce a novel approach to develop and join a human sensoric inspired metrology frame-work with qualitative gradings of apprehended impressions of products with varying surface properties. The aim is to establish the metrology framework to link measurable- and unmeasurable impressions of product surfaces to customer FEELING as exemplified by a set of industrial applications. In conclusions of the study, future research in Soft metrology is proposed to allow understanding and modelling of product perception and sensations in combination with a development of the Kansei Surface Engineering methodology and software tools. © Proceedings of NordDesign: Design in the Era of Digitalization, NordDesign 2018. All rights reserved.

  • 62.
    Eriksson, Martin
    et al.
    Validus Engineering AB, Staffanstorp, Sweden.
    Bjärnemo, Robert
    Department of Design Sciences LTH, Lund University, Lund, Sweden.
    Motte, Damien
    Department of Design Sciences LTH, Lund University, Lund, Sweden.
    Petersson, Håkan
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Integrating Engineering Design and Design Analysis Activities at an Operational Level2017Inngår i: Proceedings of the 11th International Workshop on Integrated Design Engineering / [ed] Meyer, A., Schirmeyer, R. & Vajna, Sandor, Magdeburg, 2017, Vol. 11, s. 69-80Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Computer-based design analysis is nowadays of utmost importance in most engineering design projects. However, this brings some challenges, among them that of the collaboration between engineering designers and design analysts. Since they work with, and are responsible for, different areas, they do not necessarily have full insight into each other’s way of working. The issue of integration between the design analysis process and the engineering design process is thus of major significance for providing an increase in efficiency and effectiveness in engineering design and development of products. In this work, an approach is proposed aiming at providing this increase in efficiency and effectiveness. Based on the analysis of the information workflow between the engineering design process and the design analysis process, a mapping of the necessary interactions between engineering designers and design analysts can be made. The presented approach facilitates this mapping. An application of this approach to an industrial project is also presented.

  • 63.
    Eriksson, Martin
    et al.
    Validus Engineering AB, Staffanstorp, Sweden.
    Petersson, Håkan
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Motte, Damien
    Faculty of Engineering (LTH), Lund University, Lund, Sweden.
    Bjärnemo, Robert
    Faculty of Engineering (LTH), Lund University, Lund, Sweden.
    Utilizing the Generic Design Analysis (GDA) Process Model within an Extended Set of Design Analysis Contexts2017Inngår i: Proceedings of the ASME 2017 International Mechanical Engineering Congress & Exposition: IMECE2017, New York: ASME Press, 2017, artikkel-id V011T15A028Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In most industrial product development projects, computer-based design analysis, or simply design analysis, is frequently utilized. Several design analysis process models exist in the literature for the planning, execution and follow-up of such design analysis tasks. Most of these process models deal explicitly with design analysis tasks within two specific contexts: the context of design evaluation, and the context of design optimization. There are, however, several more contexts within which design analysis tasks are executed. Originating from industrial practice, four contexts were found to represent a significant part of all design analysis tasks in industry. These are:

    1. Explorative analysis, aiming at the determination of important design parameters associated with an existing or predefined design solution (of which design optimization is a part).

    2. Evaluation, aiming at giving quantitative information on specific design parameters in support of further design decisions.

    3. Physical testing, aiming at validating design analysis models through physical testing, that is, determining the degree to which models are accurate representations of the real world from the perspective of the intended uses of the models.

    4. Method development, that is the development, verification and validation of specific guidelines, procedures or templates for the design analyst and/or the engineering designer to follow when performing a design analysis task.

    A design analysis process model needs to be able to deal with at least these four. In this work, a process model named the generic design analysis (GDA) process model, is applied to these four contexts. The principles for the adaptation of the GDA process model to different contexts are described. The use of the GDA process model in these contexts is exemplified with industrial cases: explorative analysis of design parameters of a bumper beam system, the final physical acceptance tests of a device transportation system (collision test, drop test, vibration test), and the method development of a template for analyzing a valve in a combustion engine. The "Evaluation" context is not exemplified as it is the most common one in industry.

    The GDA process model has been successfully used for the four contexts. Using the adaptation principles and industrial cases, the adaptation of the GDA process model to additional contexts is also possible. © 2017 by ASME

  • 64.
    Farley, Oliver R. L.
    et al.
    School of Exercise and Health Science, Edith Cowan University, Joondalup, Australia & Hurley Surfing Australia High Performance Center, Casuarina Beach, New South Wales, Australia & SPRINZ, Auckland University of Technology, Auckland, New Zealand.
    Secomb, Josh L.
    School of Exercise and Health Science, Edith Cowan University, Joondalup, Australia & Hurley Surfing Australia High Performance Center, Casuarina Beach, New South Wales, Australia & Queensland Academy of Sport, Brisbane, Australia.
    Raymond, Ellen
    Hurley Surfing Australia High Performance Center, Casuarina Beach, New South Wales, Australia & Department for Health, University of Bath, Bath, United Kingdom.
    Lundgren, Lina
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). School of Exercise and Health Science, Edith Cowan University, Joondalup, Australia & Hurley Surfing Australia High Performance Center, Casuarina Beach, New South Wales, Australia.
    Ferrier, Brendon
    School of Exercise and Health Science, Edith Cowan University, Joondalup, Australia & England School of Applied Sciences, Edinburgh Napier University, Edinburgh, United Kingdom.
    Abbiss, Chris R.
    School of Exercise and Health Science, Edith Cowan University, Joondalup, Australia.
    Sheppard, Jeremy
    School of Exercise and Health Science, Edith Cowan University, Joondalup, Australia & Hurley Surfing Australia High Performance Center, Casuarina Beach, New South Wales, Australia & Canadian Sport Institute, Pacific Region, Richmond, British Columbia, Canada.
    Workloads of Competitive Surfing: Work-to-Relief Ratios, Surf-Break Demands, and Updated Analysis2018Inngår i: Journal of Strength and Conditioning Research, ISSN 1064-8011, E-ISSN 1533-4287, Vol. 32, nr 10, s. 2939-2948Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The study provides an in-depth descriptive and quantitative time-motion analysis of competitive surfing, using Global Positioning System (GPS) units and video synchronization, which serves to extend upon the results of Farley, Harris, and Kilding (Journal of Strength and Conditioning Research, 26, 7 [2012]). In addition, comparisons between locations and surfers competing in the same heats were performed. Global Positioning System and video data were collected from 41 male competitive surfers (23.2 ± 6.1 years, 71 ± 10.3 kg, 177.2 ± 6.4 cm) participating in 3 professional domestic surfing events, with competitive heats of 20-minute duration. Fifty data sets were analyzed across the 3 competitions, with velocities and distances covered, proportion of time spent performing various surfing activities, and total work-to-relief ratio determined. Results revealed surfers paddled 44% of the total time, followed by stationary periods (42%). Surfers performed at a significantly (p ≤ 0.05) higher work-to-relief ratio (1.7:1) at the beach-break (an exposed beach) compared with point-break 1 and 2 (waves breaking around a rocky point). Point-breaks 1 and 2 had longer continuous durations of paddling, with significantly longer rides at point-break 1 over the beach-break (p ≤ 0.01) and point-break 2 (p ≤ 0.01). The average maximal speed (24.8 km·h−1) from point-break 2 was significantly faster than point-break 1 (p ≤ 0.01) and beach-break (p ≤ 0.05). This information should influence surfing drills and conditioning methods to prepare these athletes for the disparate demands, such as training for a point-break competition involving longer durations of continuous paddling and short, high-intensity workloads for a beach-break. © 2018 National Strength and Conditioning Association

  • 65.
    Farley, Oliver R.L.
    et al.
    School of Exercise and Health Science, Edith Cowan University, Joondalup, Western Australia, Australia & Hurley Surfing Australia High Performance Center, Casuarina Beach, New South Wales, Australia & SPRINZ, Auckland University of Technology, Auckland, New Zealand.
    Secomb, Josh L.
    School of Exercise and Health Science, Edith Cowan University, Joondalup, Western Australia, Australia & Hurley Surfing Australia High Performance Center, Casuarina Beach, New South Wales, Australia & Queensland Academy of Sport, Brisbane, Queensland, Australia.
    Raymond, Ellen R.
    Hurley Surfing Australia High Performance Center, Casuarina Beach, New South Wales, Australia & Department for Health, University of Bath, Bath, United Kingdom.
    Lundgren, Lina E.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). School of Exercise and Health Science, Edith Cowan University, Joondalup, Western Australia, Australia & Hurley Surfing Australia High Performance Center, Casuarina Beach, New South Wales, Australia.
    Ferrier, Brendon K.
    School of Exercise and Health Science, Edith Cowan University, Joondalup, Western Australia, Australia & England School of Applied Sciences, Edinburgh Napier University, Edinburgh, Scotland, United Kingdom.
    Abbiss, Chris R.
    School of Exercise and Health Science, Edith Cowan University, Joondalup, Western Australia, Australia.
    Sheppard, Jeremy M.
    School of Exercise and Health Science, Edith Cowan University, Joondalup, Western Australia, Australia & Hurley Surfing Australia High Performance Center, Casuarina Beach, New South Wales, Australia & Canadian Sport Institute, Pacific Region, Richmond, British Columbia, Canada.
    Workloads of Competitive Surfing: Work-to-Relief Ratios, Surf-Break Demands, and Updated Analysis2018Inngår i: Journal of Strength and Conditioning Research, ISSN 1064-8011, E-ISSN 1533-4287, Vol. 32, nr 10, s. 2939-2948Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The study provides an in-depth descriptive and quantitative time-motion analysis of competitive surfing, using Global Positioning System (GPS) units and video synchronization, which serves to extend upon the results of Farley, Harris, and Kilding (Journal of Strength and Conditioning Research, 26, 7 [2012]). In addition, comparisons between locations and surfers competing in the same heats were performed. Global Positioning System and video data were collected from 41 male competitive surfers (23.2 6 6.1 years, 71 6 10.3 kg, 177.2 6 6.4 cm) participating in 3 professional domestic surfing events, with competitive heats of 20-minute duration. Fifty data sets were analyzed across the 3 competitions, with velocities and distances covered, proportion of time spent performing various surfing activities, and total work-to-relief ratio determined. Results revealed surfers paddled 44% of the total time, followed by stationary periods (42%). Surfers performed at a significantly (p < 0.05) higher work-to- relief ratio (1.7:1) at the Beach-break (an exposed beach) com- pared with point-break 1 and 2 (waves breaking around a rocky point). Point-breaks 1 and 2 had longer continuous durations of paddling, with significantly longer rides at point-break 1 over the Beach-break (p < 0.01) and point-break 2 (p < 0.01). The average maximal speed (24.8 km/h) from point-break 2 was significantly faster than point-break 1 (p < 0.01) and Beach- break (p < 0.05). This information should influence surfing drills and conditioning methods to prepare these athletes for the dis- parate demands, such as training for a point-break competition involving longer durations of continuous paddling and short, high-intensity workloads for a Beach-break. 

  • 66.
    Flys, Olena
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). RISE Research Institutes of Sweden, Borås, Sweden.
    Jarlemark, Per
    RISE Research Institutes of Sweden, Borås, Sweden.
    Petronis, Sarunas
    RISE Research Institutes of Sweden, Borås, Sweden.
    Patrik, Stenlund
    RISE Research Institutes of Sweden, Borås, Sweden.
    Rosén, Bengt Göran
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Applicability of characterization techniques on fine scale surfaces2018Inngår i: Surface Topography: Metrology and Properties, ISSN 2051-672X, Vol. 6, nr 3, artikkel-id 034015Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this study, several surface topographies typical for dental implants were evaluated by different measurement techniques. The samples were prepared by machine turning, wet chemical etching and electrochemical polishing of titanium discs. The measurement techniques included an atomic force microscope (AFM), coherence scanning interferometer (CSI) and a 3D stereo scanning electron microscope (SEM). The aim was to demonstrate and discuss similarities and differences in the results provided by these techniques when analyzing submicron surface topographies. The estimated surface roughness parameters were not directly comparable since the techniques had different surface spatial wavelength band limits. However, the comparison was made possible by applying a 2D power spectral density (PSD) function. Furthermore, to simplify the comparison, all measurements were characterized using the ISO 25178 standard parameters. Additionally, a Fourier transform was applied to calculate the instrument transfer function in order to investigate the behavior of CSI at different wavelength ranges. The study showed that 3D stereo SEM results agreed well with AFM measurements for the studied surfaces. Analyzed surface parameter values were in general higher when measured by CSI in comparison to both AFM and 3D stereo SEM results. In addition, the PSD analysis showed a higher power spectrum density in the lower frequency range 10−2–10−1 µm−1 for the CSI compared with the other techniques. © 2018 IOP Publishing Ltd

  • 67.
    Folkhammar Andersson, Siv
    et al.
    Kalmar County Council, Oskarshamn, Sweden.
    Bergman, Stefan
    Lund University, Lund, Sweden & The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
    Welin Henriksson, Elisabet
    Karolinska Institutet, Huddinge, Sweden & Linköping University, Linköping, Sweden.
    Bremander, Ann
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Lund University, Lund, Sweden.
    Arthritis management in primary care – a study of physiotherapists’ current practice, educational needs, and adherence to national guidelines2017Inngår i: Musculoskeletal Care, ISSN 1478-2189, E-ISSN 1557-0681, Vol. 15, nr 3, s. 333-340Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    BACKGROUND: With an increasing number of patients with osteoarthritis (OA) and rheumatoid arthritis (RA) in primary care, our aim was to investigate arthritis-related practice in physiotherapy and to study adherence to evidence-based care.

    METHODS: Seventy physiotherapists (PTs) working in primary care were emailed a questionnaire to investigate current practice and the number of roles assumed by PTs, the degree of confidence, educational needs and adherence to national guidelines in managing patients with OA or RA. Interventions supported by national guidelines were compared with reports of treatment modalities in the questionnaire.

    RESULTS: Sixty-four (91%) PTs responded, and they reported a higher degree of confidence in assessment, treatment and education of patients with OA than for those with RA (p < 0.001). The total number of roles assumed by the PTs was higher in the management of OA than for RA (p < 0.001). PTs who assumed a greater number of roles also reported a stronger degree of confidence in assessing OA (p = 0.036). Those who assumed fewer roles also reported less confidence in RA treatment (p = 0.045). Recommendations in the guidelines were followed by the majority of PTs for eight of 11 treatment modalities in OA and for six of six in RA.

    CONCLUSIONS: PTs reported a lower degree of confidence and the assumption of fewer roles in managing patients with RA compared with OA. There was good adherence to the national guidelines for almost all the treatment modalities listed. Even so, the results indicate a need for education, especially in chronic inflammatory arthritis care.

    Copyright © 2016 John Wiley & Sons, Ltd.

  • 68.
    Furey, Paula C.
    et al.
    St. Catherine University, St. Paul, MN, USA.
    Liess, Antonia
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lee, Sylvia
    U.S. Environmental Protection Agency, Arlington, VA, USA .
    Substratum-Associated Microbiota2017Inngår i: Water environment research, ISSN 1061-4303, E-ISSN 1554-7531, Vol. 89, nr 10, s. 1634-1675Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This survey of literature on substratum-associated microbiota from 2016 includes highlights of research findings associated with algae, cyanobacteria, and bacteria from a variety of aquatic environments, but primarily freshwaters. It covers topics of relevance to the Water Environment Federation along with those of emerging or recent interest such as nuisance, bloom forming and harmful algae, fossil fuel related contamination, and other environmental pollutants like nanoparticles. Additional interesting findings reported on include general ecology, method development, multistressor interactions, nutrient cycling, taxonomy and systematics, trophic interactions, and biomonitoring, bioassessment, and bioremediation.  © 2017 Water Environment Federation

  • 69.
    Furey, Paula C.
    et al.
    Department Biology, St. Catherine University, St. Paul, Minnesota, USA.
    Liess, Antonia
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lee, Sylvia
    Office of Research and Development, U.S. Environmental Protection Agency, Washington, District of Columbia, USOffice of Research and Development, U.S. Environmental Protection Agency, Washington, District of Columbia, USA.
    Substratum‐associated microbiota2019Inngår i: Water environment research, ISSN 1061-4303, E-ISSN 1554-7531, Vol. 91, nr 10, s. 1326-1341Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This survey of 2018 literature on substratum‐associated microbiota presents brief highlights on research findings from primarily freshwaters, but includes those froma variety of aquatic ecosystems. Coverage of topics associated with benthic algae andcyanobacteria, though not comprehensive, includes new methods, taxa new to science, nutrient dynamics, trophic interactions, herbicides and other pollutants, metalcontaminants, nuisance, bloom‐forming and harmful algae, bioassessment, andbioremediation. Coverage of bacteria, also not comprehensive, focused on methylation of mercury, metal contamination, toxins, and other environmental pollutants, including oil, as well as the use of benthic bacteria as bioindicators, in bioassessment tools and in biomonitoring. Additionally, we cover trends in recent and emerging topics on substratum‐associated microbiota of relevance to the Water Environment Federation. © 2019 Water Environment Federation.

  • 70.
    Furey, Paula
    et al.
    St. Catherine University, Department Biology, St. Paul, MN, USA.
    Liess, Antonia
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lee, Sylvia
    U.S. Environmental Protection Agency, Office of Research and Development, NW, Washington, DC, USA.
    Substratum-Associated Microbiota2018Inngår i: Water environment research, ISSN 1061-4303, E-ISSN 1554-7531, Vol. 90, nr 10, s. 1171-1205Artikkel, omtale (Fagfellevurdert)
    Abstract [en]

    This review briefly highlights findings from a survey of 2017 literature on substratum-associated microbiota from a variety of aquatic environments, but primarily freshwaters. Centered on algae, cyanobacteria, and bacteria, topics covered include those of relevance to the Water Environment Federation, along with those of recent and emerging interest such as new or updated methods, new and interesting taxa, general ecology, trophic interactions, biogeochemical cycling, aquatic pollutants like herbicides and heavy metals, and nuisance, bloom-forming, or harmful algae. Additional coverage includes studies on bioremediation, bioassessment, biomonitoring and quantification of benthic microbiota.  © 2018 Water Environment Federation

  • 71.
    Gadd, Henrik
    et al.
    Oresundskraft AB, S-25106 Helsingborg, Sweden..
    Werner, Sven
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Fault detection in district heating substations2015Inngår i: Applied Energy, ISSN 0306-2619, E-ISSN 1872-9118, Vol. 157, s. 51-59Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Current temperature levels in European district heating networks are still too high with respect to future conditions as customer heat demands decrease and new possible heat source options emerge. A considerable reduction of temperature levels can be accomplished by eliminating current faults in substations and customer heating systems. These faults do not receive proper attention today, because neither substations nor customer heating systems are centrally supervised. The focus of this paper has been to identify these faults by annual series of hourly meter readings obtained from automatic meter reading systems at 135 substations in two Swedish district heating systems. Based on threshold methods, various faults were identified in 74% of the substations. The identified faults were divided into three different fault groups: Unsuitable heat load pattern, low average annual temperature difference, and poor substation control. The most important conclusion from this early study of big data volumes is that automatic meter reading systems can provide proactive fault detection by continuous commissioning of district heating substations in the future. A complete reduction of current faults corresponds to approximately half the required reduction of the current temperature levels in the effort toward future low-temperature district heating networks. (C) 2015 The Authors. Published by Elsevier Ltd.

  • 72.
    Ghadirinejad, Nickyar
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
    Ottermo, Fredric
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Hoseinzade, A.
    University of Sistan and Baluchestan, Zahedan, Iran.
    Experimental Evaluation, Simulation and Statistical Analysis of a Humidification-Dehumidification Solar Desalination System2018Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    Inspired by the precipitation cycle, the Humidification-Dehumidification (HDH) method is based on evaporation and consecutive condensation in a natural loop. The heat input to the system is provided by a solar collector, making the system suitable for remote locations with access to sea water and good insolation. In this study investigated parameters included temperatures and flow rates of cooling water, cycled air, and water intake to humidifier, as well as the height of packed bed column. A series of simulations has been performed in the ASPEN Plus software, in order to obtain optimum physical parameters in this desalination system. The experimental results showed that at constant heat flux and optimum air flow rate, three parameters have strong influence on the production of distilled water: the flow rate of cooling water, the flow rate of water inlet and its temperature augmentation. Moreover, although increasing flow rate of cooling water leads to an increase in the distilled water flow rate, this effect is mitigated at high rates. The most reliable Height Equivalent to a Theoretical Plate (HETP) model of random packing has been found by opting for the model of Mangers & Ponter. The estimated error of the model in predicting the height of the packed bed was less than 4%. Regarding closed versus open air flow; the closed air system provided an efficiency of distilled water production up to 15% higher than the open air system for the same conditions. This increase is a result of prevention of the loss of air humidity at the condenser outlet. A regression analysis was performed, which indicates that the HDH system can be well described by a linear model for the logarithm of the rate of desalinated water. The variables used are the saline water flow rate, the heat transfer rate in the solar collector and the air flow rate. The adjusted R-squared of the fit was computed as 89.8%.

  • 73.
    Gong, Mei
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Exergy and cost analysis of heating systems with energy storage2017Konferansepaper (Fagfellevurdert)
    Abstract [en]

    About three quarters of the total final energy consumption is in the form of electricity and district heat and 49 TWh of district heat was used in Sweden in 2015. The energy supply and user demands vary and do not always match. The electricity production depends on the available energy resource that often is renewable, such as wind, solar and hydro power. The heat demand strongly depends on outdoor temperature and the weather conditions. Electricity and thermal storages are needed in order to reduce the losses from the lack of match between production and consumption. The cost of energy examined by others shows that electricity storage is about 100 times more expensive than thermal storage. However, in this study cost of exergy is only 20 times more for electricity than thermal. This study views electricity and district heat from source to end use and analyze the cost of exergy with storage. With a surplus of electricity the most efficient and cheapest way is to use electricity storage, such as battery or hydro storage on the purpose of electricity usage. The advantage of thermal storage depends strongly on the purpose of use, e.g. if it is for heating purposes. Heat pump is a method to convert electricity to district heat with 56% exergy efficiency. This paper will analyze different cases in order to give a more detailed discussion. Further studies of more cases are needed in the future.

  • 74.
    Gong, Mei
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    New system solution for biomass CHP plant2019Rapport (Annet vitenskapelig)
    Abstract [en]

    The main propose with this pre-study was to assess a new Chinese conceptconcerning Combined Heat and Power (CHP) plants for typical Swedish conditionswith biomass as fuel. The new enhancement is to use a large absorption heat pumpfor the final heat supply instead of the turbine condenser. More heat can then berecovered from the three units that will deliver the heat (the flue gas condenser, theturbine condenser and the absorption heat pump). So far, this new CHP solution hasnever been implemented outside China.For this pre-study, the simulation model was elaborated on design data from theÖrtofta biomass CHP plant outside Lund. The results show that Chinese conceptwill provide the higher conversion efficiency, but with lower power-to-heat ratio.The main benefit is that more heat can be recycled from the flue gas condenser. Thepayback time of installing absorption heat pump is always over eight years withinexpected intervals for alternative costs for electricity and heat.The Chinese concept is less suitable for the Swedish context with biomass backpressureCHP plants, since the proportion of lost electricity becomes rather high.The Chinese context with utilization of existing condensation turbines is stillinteresting, since condenser heat can be recycled without major modification ofexisting turbines.

  • 75.
    Gong, Mei
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Werner, Sven
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Enhanced Biomass CHP plants for district heating systems2019Inngår i: Book of abstracts: 5th International Conference on Smart Energy Systems in Copenhagen, on 10-11 September 2019 / [ed] Henrik Lund, Brian Vad Mathiesen & Poul Alberg Østergaard, Aalborg: Aalborg Universitetsforlag, 2019, s. 239-239Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In Sweden, located in North Europa, more than half of the total heat demand in buildings is met by district heating, but only just above one-third of the heat supply comes from Combined Heat and Power. In this paper, a new enhancement of biomass CHP plant is explored. The modification is that a large absorption heat pump is used for the heat supply to the district heating network. This new solution has so far never been implemented outside China. The benefits will be more electricity from lower condenser pressure and more heat obtained from flue gas condensation. The drawback is that the absorption heat pump will require extracted steam that will decrease electricity generation. In order to estimate the offset between the two benefits and the drawback, a simplified model has been developed to study a typical Swedish biomass CHP plant located in Lund. This enhancement could be part of the transition from third generation district heating (3GDH) to fourth generation district heating system (4GDH) by introducing efficient heat supply plants in current systems with high distribution temperatures. Several cases studied concerning both 3GDH and 4GDH have been compared to reference cases. The results show that the enhancement is a possible way to prepare for future 4GDH. Further investigations are recommended concerning pre-investment in absorption heat pumps as a transition strategy for new CHP plants originally designed for return temperatures of 20-30 ºC.

  • 76.
    Gong, Mei
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Werner, Sven
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Mapping energy and exergy flows of district heating in Sweden2017Inngår i: Energy Procedia, ISSN 1876-6102, E-ISSN 1876-6102, Vol. 116, s. 119-127Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    District heating has been available in Sweden since the 1950s and used more than half of the total energy use in dwelling and no-residential premises in 2013. Energy and exergy efficient conversion and energy resources are key factors to reduce the environmental impact. It is important to understand energy and exergy flows from both the supply and demand sides. The exergy method is also a useful tool for exploring the goal of more efficient energy-resource use. Sankey diagrams together with energy and exergy analyses are presented to help policy/decision makers and others to better understand energy and exergy flows from primary energy resource to end use. The results show the most efficient heating method in current district heating systems, and the use of renewable energy resources in Sweden. It is exergy inefficient to use fossil fuels to generate low quality heat. However, renewable energies, such as geothermal and solar heating with relative low quality, make it more exergy efficient. Currently, about 90% of the energy sources in the Swedish district heating sector have an origin from non-fossil fuels. Combined heat and power is an efficient simultaneous generator of electricity and heat as well as heat pump with considering electricity production. Higher temperature distribution networks give more distribution losses, especially in exergy content. An outlook for future efficient district heating systems is also presented.

  • 77.
    Gåård, Anders
    et al.
    Karlstads Universitet, Karlstad, Sverige.
    Löfgren, Hans
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Nilsson, Bertil
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Tillämpad matematik och fysik (MPE-lab).
    Hallbäck, Nils
    Karlstads Universitet, Karlstad, Sverige.
    Införandet av Computer Based Mathematics (CBM) i ingenjörsutbildningar2017Konferansepaper (Annet (populærvitenskap, debatt, mm))
    Abstract [sv]

    CBM är ett koncept som innebär användning av datorn och matematikprogramvaror som huvudverktyg i under-visningen. Istället för att som i traditionell undervisning kombinera handräkning med datorlabbar ligger tyngdpunkten i en CBM-kurs på datoriserade beräkningsverktyg. Härav för-flyttas fokus mot konceptförtåelse, modellering och tolkning av resultat. Vid Högskolan i Halmstad och Karlstads Universitet finns idag flera kurser baserat på CBM. Kvantitativt har införandet lett till ökad studentgenomströmning samtidigt som innehållet i kurser har ökat. Kvalitativa markörer, såsom studentens egen uppfattning om konceptuell förståelse och nyfikenhet inom ämnet, har baserat på kursvärderingar också ökat. 

  • 78.
    Hagel, Sofia
    et al.
    Skåne University Hospital, Lund, Sweden & Lund University, Lund, Sweden.
    Haglund, Emma
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Spenshult Research and Development Center, Halmstad, Sweden.
    Content Validity of the Arthritis Self-Efficacy Scale2017Inngår i: Reumabulletinen, ISSN 2000-2246, nr 119; 4, s. 59-60, artikkel-id 93Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: Appropriate evaluation is important to optimize health care interventions and to understand patient’s experiences of their situation. Self-efficacy has been proven to have impact on pain, fatigue, physical activity and on cardiovascular risk in patients with inflammatory arthritides, and adequate evaluation is important. The arthritis self-efficacy scale (ASES) is one patient reported outcome measure recommended for evaluation of self-efficacy in arthritides. The aim of this study was to start analyzing the content validity of the ASES through linking to the International Classification of Functioning (ICF), and by using the proposed structure for personal factors (PF).

    Material and methods: The linking to the ICF was performed through identification of each meaningful concept of heading, introduction and all question including answering options of the ASES subscales for pain and symptoms. Each identified meaningful concept was linked to the third level ICF domain, according to established linking rules. Concepts identified as potential personal factors were sorted into the proposed structure of personal factors (Geyh, 2011) when applicable. The two authors independently identified meaningful concepts and performed the linking to the ICF, and sorted into the structure of personal factors (PF). Disagreements were discussed thoroughly, and reviewed until consensus was reached.    

    Results: The ASES subscales for pain and symptom comprised 5 and 6 questions respectively. All questions were linked to the ICF domain body functions, at a minimum through each answering option that was linked to the b126 “temperament and personality functions”. Other body function domains covered were b130 (energy and drive functions), b134 (sleep functions), b152 (emotional functions), b160 (thought functions) and b280 (pain).

    Seven questions and the introduction of the ASES subscales for pain and symptom were linked to the ICF domain activity and participation (3 and 4 questions respectively).  Five questions were linked to d570 (looking after one’s health), while d220 (undertaking multiple tasks) and d230 (carrying out daily routine) were captured by both subscales although somewhat less well represented.

    Three questions were linked to the ICF domain environmental factors. Two ASES pain questions were linked to e110 (products and substances for personal consumption) while one ASES symptom question was linked to e425 (individual attitudes of acquaintances, peers, colleagues, neighbors and community members).

    Personal factors were identified in both ASES subscales. The answering options for all questions except two could be sorted into the PF concept “feelings”, the headings, introductions and six questions could be sorted into the PF concept “patterns of experience and behavior”, and three questions could be sorted into “thoughts and beliefs”.

    Conclusion: The ASES subscales for pain and symptom showed satisfying content validity since important constructs on all ICF domains (except for body structure) were included. Both ASES subscales also covered PF that contribute with important aspects on health, and impact of the disease, further improving the content validity. 

     

  • 79.
    Haglund, Emma
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Spenshult Research and Development Center, Halmstad, Sweden.
    Bremander, Ann
    Spenshult Research and Development Center, Halmstad, Sweden & Section of Rheumatology, Lund University, Lund, Sweden & University of Southern Denmark, Odense, Denmark & University Hospital of Southern Denmark, Sønderborg, Denmark.
    Bergman, Stefan
    Spenshult Research and Development Center, Halmstad, Sweden & Section of Rheumatology, Lund University, Lund, Sweden & Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
    The StarT back screening tool and a pain mannequin improve triage in individuals with low back pain at risk of a worse prognosis - a population based cohort study2019Inngår i: BMC Musculoskeletal Disorders, ISSN 1471-2474, E-ISSN 1471-2474, Vol. 20, nr 1, artikkel-id 460Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    BACKGROUND: The STarT Back Screening Tool (SBT) identifies patients with low back pain (LBP) at risk of a worse prognosis of persistent disabling back pain, and thereby facilitates triage to appropriate treatment level. However, the SBT does not consider the pain distribution, which is a known predictor of chronic widespread pain (CWP). The aim of this study was to determine if screening by the SBT and screening of multisite chronic widespread pain (MS-CWP) could identity individuals with a worse prognosis. A secondary aim was to analyze self-reported health in individuals with and without LBP, in relation to the combination of these two screening tools.

    METHODS: One hundred and nineteen individuals (aged 40-71 years, mean (SD) 59 (8) years), 52 with LBP and 67 references, answered two screening tools; the SBT and a pain mannequin - as well as a questionnaire addressing self-reported health. The SBT stratifies into low, medium or high risk of a worse prognosis. The pain mannequin stratifies into either presence or absence of CWP in combination with ≥7 painful areas of pain (0-18), here defined as MS-CWP (high risk of worse prognosis). The two screening tools were studied one-by-one, and as a combined screening. For statistical analyses, independent t-tests and Chi-square tests were used.

    RESULTS: Both the SBT and the pain mannequin identified risk of a worse prognosis in individuals with (p = 0.007) or without (p = 0.001) LBP. We found that the screening tools identified partly different individuals at risk. The SBT identified one individual, while the pain mannequin identified 21 (19%). When combining the two screening methods, 21 individuals (17%) were at high risk of a worse prognosis. When analyzing differences between individuals at high risk (combined SBT and MS-CWP) with those at low risk, individuals at high risk reported worse health (p = 0.013 - < 0.001).

    CONCLUSIONS: Both screening tools identified individuals at risk, but they captured different aspects, and also different number of individuals at high risk of a worse prognosis. Thus, using a combination may improve early detection and facilitate triage to appropriate treatment level with multimodal approach also in those otherwise missed by the SBT. 

    © The Author(s). 2019

  • 80.
    Haglund, Emma
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Spenshult Research and Development Center, Halmstad, Sweden.
    Bremander, Ann
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Spenshult Research and Development Center, Halmstad, Sweden & Lund University, Lund, Sweden.
    Bergman, Stefan
    Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI). Spenshult Research and Development Center, Halmstad, Sweden; Lund University, Lund, Sweden & ahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
    Larsson, Ingrid
    Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI), Hälsa och omvårdnad. Spenshult Research and Development Center, Halmstad, Sweden.
    Educational needs in patients with spondyloarthritis in Sweden - a mixed-methods study2017Inngår i: BMC Musculoskeletal Disorders, ISSN 1471-2474, E-ISSN 1471-2474, Vol. 18, nr 1, artikkel-id 335Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    BACKGROUND: There is a demand for a flexible and individually tailored patient education to meet patients' specific needs and priorities, but this area has seldom been studied in patients with spondyloarthritis (SpA), a family of inflammatory rheumatic diseases. The aim of the present study was to identify needs and priorities in patient education in patients with SpA. A second aim was to investigate patients' experiences and preferences of receiving patient education.

    METHODS: Data collection included a questionnaire survey with the Educational Needs Assessment Tool (ENAT) and interviews, using a mixed-methods design. Patients were identified through a specialist clinic register. Descriptive data are presented as mean with standard deviation, or frequencies. Chi-square test and independent-samples t-test were used for group comparisons. A manifest qualitative conventional content analysis was conducted to explore patients' experiences and needs in patient education, based on two focus groups (n = 6) and five individual interviews.

    RESULTS: Almost half (43%) of the 183 SpA patients had educational needs, particularly regarding aspects of self-help, feelings, and the disease process. More educational needs were reported by women and in patients with higher disease activity, while duration of disease did not affect the needs. The qualitative analysis highlighted the importance of obtaining a guiding, reliable, and easily available patient education for management of SpA. Individual contacts with healthcare professionals were of importance, but newer media were also requested.

    CONCLUSION: There are considerable educational needs in patients with SpA, and education concerning self-help, feelings, and the diseases process were raised as important issues. Healthcare professionals need to consider the importance of presenting varied formats of education based on the experiences and preferences of patients with SpA. © 2017 The Author(s).

  • 81.
    Haglund, Emma
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Spenshult Research and Development Center, Halmstad, Sweden.
    Olsson, C.
    The Sahlgrenska Academy, University of Gothenburg, Gothenburg.
    Bremander, Ann
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Bergman, Stefan
    Spenshult Research and Development Center, Halmstad, Sweden; The Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden & Lund University, Lund, Sweden.
    Improving triage to appropriate treatment level by using a combination of screening tools in patients at risk of developing chronic back pain2017Inngår i: Annals of the Rheumatic Diseases, ISSN 0003-4967, E-ISSN 1468-2060, Vol. 76, nr Suppl. 2, s. 1531-1532Artikkel i tidsskrift (Fagfellevurdert)
  • 82.
    Haglund, Emma
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). RandD Spenshult, Halmstad, Sweden.
    Pinheiro Sant'Anna, Anita
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Andersson, Maria
    RandD Spenshult, Halmstad, Sweden & Department of Clinical Sciences, Department of Rheumatology, Lund University, Lund,, Sweden.
    Bremander, Ann
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Department of Regional Health Research, University of Southern Denmark, Odense, Denmark.
    Aili, Katarina
    Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI). RandD Spenshult, Halmstad, Sweden & Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
    Dynamic joint stability measured as gait symmetry in people with symptomatic knee osteoarthritis2019Inngår i: Annals of the Rheumatic Diseases, ISSN 0003-4967, E-ISSN 1468-2060, Vol. 78, nr Suppl. 2, s. -1458Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: Modern strategies for knee osteoarthritis (OA) treatment and prevention includes early detection and analyses about pain, gait and lower extremity muscle function including both strength and stability. The very first sign of knee OA is pain or perceived knee instability, often experienced during weight bearing activities e.g. walking. Increased muscle strength will provide dynamic joint stability, reduce pain, and disability. Specific measures of gait symmetry (GS) can be assessed objectively by using accelerometers, which potentially is a feasible method when evaluating early symptoms of symptomatic knee OA.

    Objectives: The aim was to study if symptoms of early knee pain affected gait symmetry, and the association between lower extremity muscles function and gait symmetry in patients with symptomatic knee OA.

    Methods: Thirty-five participants (mean age 52 SD 9 years, 66% women) with uni- or bilateral symptomatic knee OA, and without signs of an inflammatory rheumatic disease or knee trauma were included. Pain was assessed by a numeric rating scale (NRS, range 0-10 best to worse), tests of lower extremity muscle function with the maximum number of one leg rises. Dynamic stability was measured as GS by using wearable inertial sensors (PXNordic senseneering platform), during the 6 min walking test to obtain spatio-temporal gait parameters. GS was computed based on stride time (temporal symmetry, TS) and stride length (spatial symmetry, SS). Stride length was normalized by height. Kruskal-Wallis and Spearman’s correlation coefficient were used for analyses.

    Results: Reports of knee pain did not differ between gender (women 4.7, SD 2.4 vs. men 3.9, SD 2.4, p= 0.362), neither did one leg rises or gait symmetry. Participants who reported unilateral knee pain (left/right side n=9/13), had a shorter stride length on the painful side. The mean difference in stride length was 0.7% of the subject’s height (SD 1.3). Participants with unilateral pain also presented less SS gait than those who reported bilateral pain (p=0.005). The higher number of one-leg rises performed, the better TS was observed. We found a significant relationship between TS and one-leg rise for the right r s =-0.39, p=0.006, and left r s =-0.40, p=0.004 left side). No significant relationship was observed between SS and one-leg rises.

    Conclusion: Our results is in line with earlier findings stating that knee pain affects GS negatively and that lower extremity muscle function is an important feature for symmetry and dynamic joint stability in patients with symptomatic knee OA. We also found that pain in one leg was related to impaired GS. Bilateral knee pain was however more symmetrical and will need healthy controls for comparison to better understand the negative impact of symptomatic knee OA.

  • 83.
    Hansson, Anna
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Pedersen, Eja
    Lund University, Lund, Sweden.
    Hoveskog, Maya
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Centrum för innovations-, entreprenörskaps- och lärandeforskning (CIEL), Business Model Innovation (BMI).
    Willingness to Innovate Business Models for Sustainability amongst Agricultural Businesses2018Konferansepaper (Fagfellevurdert)
  • 84.
    Hedström, Ingemar
    et al.
    Department of Applied Science, Mid Sweden University, Härnösand, Sweden & Escuela de Biología, Universidad de Costa Rica, San José, Costa Rica & Department of Ecumenical Research, Sabanilla, Costa Rica.
    Sahlén, Göran
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Evolutionary Biology Centre, Uppsala University, Uppsala, Sweden.
    A key to the adult Costa Rican "helicopter" damselflies (Odonata Pseudostigmatidae) with notes on their phenology and life zone preferences2001Inngår i: Revista de biologia tropical, ISSN 0034-7744, E-ISSN 2215-2075, Vol. 49, nr 3-4, s. 1037-1056Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    We present a key to the Costa Rican species of Pseudostigmatidae, comprising three genera with the following species: Megaloprepus caerulatus, Mecistogaster linearis, M. modesta, M. ornata and Pseudostigma aberrans. Pseudostigma accedens, which may occur in the region, is also included. For each species we give a brief account of morphology, phenology and life zone preferences, including distributional maps based on more than 270 records. These are not all of the known specimens from the area, but a high enough number to give a relatively good picture of the distribution and status of the species. We found M. caerulatus to be active during the first half of the year in seasonal, tropical semi-dry lowland forest and tropical moist forest at mid-elevation, but like M. linearis, M. caerulatus was active all year round in non-seasonal, tropical wet lowland forest and tropical moist forest at mid-elevation. Mecistogaster modesta also flew year round in non-seasonal, tropical wet lowland forest and tropical moist evergreen forest at mid-elevation, and likewise in seasonal and non-seasonal, tropical premontane moist forest. Only a few findings, however, have been made of M. modesta in seasonal, tropical semi-dry deciduous forest and seasonal, tropical moist evergreen forest. Mecistogaster ornata was missing entirely from non-seasonal, tropical wet lowland forest and non-seasonal, tropical moist forest at mid-elevation, while this species was active year round in seasonal, tropical dry lowland forest and tropical semi-dry forest, as well as in seasonal, tropical moist evergreen forest and tropical premontane moist forest, both at mid-elevation. Pseudostigma aberrans has so far been found too few times in Costa Rica for any indication of flight time preference.

  • 85.
    Hedström, Ingemar
    et al.
    Boston University, College of Arts and Sciences, Boston, MA, United States.
    Sahlén, Göran
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    An extended description of the larva of Megaloprepus caerulatus from Costa Rica (Odonata: Pseudostigmatidae)2003Inngår i: International Journal of Odonatology, ISSN 1388-7890, Vol. 6, nr 1, s. 23-31Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The larva of Megaloprepus caerulatus is described and illustrated from specimens collected near the northern border of Barbilla National Park on the Costa Rican Caribbean slope. Habits and characters of larvae of three different size classes obtained from artificial tree holes permit the identification of small (body length 4 mm, excluding the caudal lamellae) larvae up to the final stadium. New diagnostic characters include the shape of the prementum and head. © 2003 Taylor & Francis Group, LLC.

  • 86.
    Helland, Christian
    et al.
    The Norwegian Olympic and Paralympic Committee and Confederation of Sports, Oslo, Norway.
    Hole, Eirik
    The Norwegian Olympic and Paralympic Committee and Confederation of Sports, Oslo, Norway.
    Iversen, Erik
    The Norwegian Olympic and Paralympic Committee and Confederation of Sports, Oslo, Norway.
    Olsson, Monica Charlotte
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Seynnes, Olivier
    Norwegian School of Sport Sciences, Oslo, Norway.
    Solberg, Paul Andre
    Defense Institute, Norwegian School of Sport Sciences, Oslo, Norway.
    Paulsen, Gøran
    The Norwegian Olympic and Paralympic Committee and Confederation of Sports, Oslo, Norway & Norwegian School of Sport Sciences, Oslo, Norway.
    Training Strategies to Improve Muscle Power: Is Olympic-style Weightlifting Relevant?2017Inngår i: Medicine & Science in Sports & Exercise, ISSN 0195-9131, E-ISSN 1530-0315, Vol. 49, nr 4, s. 736-745Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    INTRODUCTION: This efficacy study investigated the effects of (1) Olympic-style weightlifting (OWL), (2) motorized strength and power training (MSPT), and (3) free weight strength and power training (FSPT) on muscle power.

    METHODS: Thirty-nine young athletes (20±3 yr.; ice hockey, volleyball and badminton) were randomized into the three training groups. All groups participated in 2-3 sessions/week for 8 weeks. The MSPT and FSPT groups trained using squats (two legs and single leg) with high force and high power, while the OWL group trained using clean and snatch exercises. MSPT was conducted as slow-speed isokinetic strength training and isotonic power training with augmented eccentric load, controlled by a computerized robotic engine system. FSPT used free weights. The training volume (sum of repetitions x kg) was similar between all three groups. Vertical jumping capabilities were assessed by countermovement jump (CMJ), squat jump (SJ), drop jump (DJ), and loaded CMJs (10-80 kg). Sprinting capacity was assessed in a 30 m sprint. Secondary variables were squat 1-repetition-maximum, body composition and quadriceps thickness and architecture.

    RESULTS: OWL resulted in trivial improvements, and inferior gains compared to FSPT and MSPT for CMJ, SJ, and DJ. MSPT demonstrated small, but robust effects on SJ, DJ and loaded CMJs (3-12%). MSPT was superior to FSPT in improving 30 m sprint performance. FSPT and MSPT, but not OWL, demonstrated increased thickness in the vastus lateralis and rectus femoris (4-7%).

    CONCLUSION: MSPT was time-efficient and equally or more effective than FSPT training in improving vertical jumping and sprinting performance. OWL was generally ineffective and inferior to the two other interventions. Copyright © 2016 by the American College of Sports Medicine.

  • 87.
    Horwath, Oscar
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
    Paulsen, Gøran
    The Norwegian Olympic and Paralympic Committee and Confederation of Sports, Oslo, Norway & Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway.
    Esping, Tobias
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
    Seynnes, Olivier
    Department of Physical Performance, Norwegian School of Sport Sciences, Oslo, Norway.
    Olsson, M. Charlotte
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Isokinetic resistance training combined with eccentric overload improves athletic performance and induces muscle hypertrophy in young ice hockey players.2019Inngår i: Journal of Science and Medicine in Sport, ISSN 1440-2440, E-ISSN 1878-1861, Vol. 22, nr 7, s. 821-826Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    OBJECTIVES: To determine the combined effects of slow isokinetic resistance training and eccentric overload and compare it to traditional resistance training on strength, power, body composition and muscle hypertrophy in young ice hockey players.

    DESIGN: Experimental, randomized trial.

    METHODS: Twenty-two resistance-trained ice hockey players (18±1year) were assigned to either isokinetic resistance training and eccentric overload (ISO/ECC; n=11) or traditional resistance training (TRAD; n=11). Participants underwent supervised progressive resistance training for 8 weeks (2-3 sessions/week) involving lower body multiple-joint exercises (heavy squats and explosive jump squats). The ISO/ECC group performed their training using a computerized robotic engine system (1080 Quantum synchro, Sweden), whereas the TRAD group performed the same resistance exercises with isotonic loading. Before and after the intervention, participants were evaluated in 1RM back squat, loaded jump squats, sprint- and jump performance, body composition and muscle thickness using ultrasound measurement.

    RESULTS: Similar moderate increases in 1RM back squat and power output in the jump squats were found in both the ISO/ECC and TRAD groups (11-17%, P<0.01), whereas only the ISO/ECC group showed improvements in drop jump performance (9.8%, P=0.01). Moreover, similar trivial changes in body composition were observed in both groups, while only the ISO/ECC training group increased muscle thickness in the vastus intermedius (P=0.01) and rectus femoris muscles (P=0.03).

    CONCLUSIONS: Both modalities effectively increased maximal strength and power output, whereas isokinetic resistance training, combined with eccentric overload, improved drop jump performance and induced greater muscle hypertrophy than traditional training in young ice hockey players. © 2019 Sports Medicine Australia

  • 88.
    Hoveskog, Maya
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Centrum för innovations-, entreprenörskaps- och lärandeforskning (CIEL), Business Model Innovation (BMI).
    Halila, Fawzi
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Centrum för innovations-, entreprenörskaps- och lärandeforskning (CIEL), Business Model Innovation (BMI).
    Mattsson, Marie
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Upward, Antony
    Ontario College of Art and Design University (OCAD U), Toronto, Ontario, Canada.
    Karlsson, Niklas
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Centrum för innovations-, entreprenörskaps- och lärandeforskning (CIEL).
    Education for Sustainable Development: Business modelling for flourishing2018Inngår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 172, s. 4383-4396Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    As companies and other organizations increasingly recognize society’s demand for greater social and environmental sustainability, university and college business schools have responded with new pedagogic approaches. Business schools have begun to offer courses in business models and business model innovation that focus not only on profit-normative goals but also on social and environmental goals. This paper describes an Experiential Workshop for university undergraduates in which the Service-Learning pedagogic approach is taken and Flourishing Business Canvas is applied as a tool for collaborative visual business modelling. In the Workshop, the students work with business model innovation for a biogas production cooperative of farmer-members in southern Sweden. The students take the role of problem-owners and problem-solvers as they co-create new business models ideas for the cooperative. The paper presents the students’ achievement of three Learning Objectives as they engage in meaningful, “real-world” simulations with a high degree of autonomy that allows them to combine their theoretical knowledge with practice. Implications for educators who wish to test the Experiential Workshop in their classrooms are proposed. The paper concludes with the suggestion that Education for Flourishing is a useful expansion of Education for Sustainable Development. © 2017 Elsevier Ltd. All rights reserved.

  • 89.
    Jarnemo, Anders
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agriculture, SLU, Riddarhyttan, Sweden.
    Jansson, Gunnar
    Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agriculture, SLU, Riddarhyttan, Sweden.
    Månsson, Johan
    Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agriculture, SLU, Riddarhyttan, Sweden.
    Temporal variations in activity patterns during rut - Implications for survey techniques of red deer, Cervus elaphus2017Inngår i: Wildlife research (East Melbourne), ISSN 1035-3712, E-ISSN 1448-5494, Vol. 44, nr 2, s. 106-113Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Context Intraspecific differences in behaviour can affect censuses and bias population estimates, suggesting that choice and implementation of census methods are fundamental, and need to be adapted to behavioural variations. Aims We investigated temporal variations in activity patterns during the rut among red deer (Cervus elaphus) categories and the implications for two different census methods. Methods We used a long-term dataset collected during 17 consecutive red deer rutting seasons in southernmost Sweden. The two census methods were: (1) a collection of observation ratios; and (2) a count of individuals including identification of males. Both methods are commonly used in ungulate management. Key results There was a difference in activity among age and sex categories, with a temporal variation in activity and/or presence at rutting grounds of adult (≥6 years) and subadult (2-5 years) males. Observation ratios of adult and subadult males increased from low at the start of the rut to a top level during peak rut, with subadults lagging behind adults. Before and during peak rut, the proportion of adult males was higher than that of subadults. After peak rut, the proportion of adult males decreased, whereas subadult males remained high, resulting in a higher number of subadults than of adults. The comparison of the two census methods revealed a strong correlation regarding the trends of population size and for the age and sex categories. There was also a strong consistency concerning the calf/female ratio. The male proportion was, however, consistently lower in the collected observations than in the counts. Conclusions The lower proportion of males in observations compared with counts may be explained by behavioural differences among male age classes, i.e. by temporal variations in presence and activity. That females, calves and yearling males are stationary during the rut, but adult and subadult males arrive and depart the rutting grounds at varying points of time, can lead to an underestimated male proportion in continuously collected observation data. Implications The results suggest that census should be conducted during peak rut, and that incorporating identification of individual males in the monitoring may be beneficiary. © CSIRO 2017.

  • 90.
    Jarnemo, Anders
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agricultural Sciences, SE-730 91 Riddarhyttan, Sweden.
    Minderman, Jeroen
    Biological and Environmental Sciences, University of Stirling, Stirling FK9 4LA, United Kingdom.
    Bunnefeld, Nils
    Biological and Environmental Sciences, University of Stirling, Stirling FK9 4LA, United Kingdom.
    Zidar, Josefina
    Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden.
    Månsson, Johan
    Grimsö Wildlife Research Station, Department of Ecology, Swedish University of Agricultural Sciences, SE-730 91 Riddarhyttan, Sweden.
    Managing landscapes for multiple objectives: Alternative forage can reduce the conflict between deer and forestry2014Inngår i: Ecosphere, ISSN 2150-8925, E-ISSN 2150-8925, Vol. 5, nr 8Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Deer (Cervidae) cause considerable damage to forest plantations, crops, and protected habitats. The most common response to this damage is to implement strategies to lower population densities. However, lowering deer density may not always be desirable from hunting, recreational, or conservation perspectives. Therefore, knowledge is needed about additional factors beyond deer density that affect damage levels, and management actions that consider competing management goals. We studied the relationships between levels of bark-stripping by red deer (Cervus elaphus) on Norway spruce (Picea abies) and (1) relative deer density indices (pellet group count and deer harvest data), (2) availability of alternative natural forage (cover of forage species) and (3) proportion forest in the landscape, both at a forest stand scale and at a landscape scale. Extensive variation in damage level was evident between the six study areas. On a stand scale, the proportion of spruce damaged was positively related to pellet group density, indicating the importance of local deer usage of stands. In addition, available alternative forage in the field layer within spruce stands and proportion forest surrounding stands was negatively related to damage level. On the landscape scale, damage level was negatively related to availability of forage in the field and shrub layers and proportion forest, but was not related to any of the relative deer density indices. Increasing alternative forage may thus decrease damage and thereby reduce conflicts. Additionally, the proportion of forest in the landscape affects damage levels and should thus be considered in landscape planning and when forecasting damage risk. The relationship between local deer usage of stands and damage level suggests that future studies should try to separate the effects of local deer usage and deer density. © 2014 Jarnemo et al.

  • 91.
    Johannesson, Karin M.
    et al.
    IFM Biology, Linköping University, Linköping, Sweden.
    Tonderski, Karin S.
    IFM Biology, Linköping University, Linköping, Sweden.
    Ehde, Per Magnus
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Weisner, Stefan E. B.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Temporal phosphorus dynamics affecting retention estimates in agricultural constructed wetlands2017Inngår i: Ecological Engineering: The Journal of Ecotechnology, ISSN 0925-8574, E-ISSN 1872-6992, Vol. 103, nr Part B, s. 436-445Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Data from seven constructed wetlands (CWs) in the south of Sweden were analyzed to investigate the effects of water flow and season on inflow phosphorus (P) concentrations and temporal P retention variations in CWs receiving runoff from arable land. The form of P (dissolved or particulate) during different water flows (high and low) and seasons (warm and cold) was investigated using the results of total P (TP) and phosphate analyzed in grab samples that had been collected regularly or occasionally during two to nine years, along with continuous water flow measurements.

    The form of inflow and outflow P (particulate or dissolved P) differed between CWs, and also varied with season and flow. For instance, in three of the CWs, particulate P (PP) dominated the inflow during the cold period with high flow, while during the other periods the proportion of PP was approximately 50%. In one CW situated in a catchment with high clay content, PP dominated both inflow and outflow at all times. The average clay content in catchment top soils was positively correlated to the flow-weighted inflow TP concentrations.

    In three CWs receiving runoff through drainage pipes, the relationship between TP concentrations (TPin) and water flow was positive, both during high and low flow, and during warm and cold period. However, in four CWs that received surface water runoff, the relationship between TPin and water flow was positive during high flow periods (i.e. the 25% sampling occasions with the highest flow), and during low flow and warm period, the relationship was negative in these four wetlands, indicating either anoxic stagnant water upstream or influence from rural wastewater.

    The temporal dynamics of P concentrations mean that in some of the CWs, the main part of the annual P retention may occur during a few days with high water flows. The correlation between concentration and water flow suggests that the water sampling strategy may have a considerable impact on retention estimates, as exemplified by some calculation examples. © 2015 Elsevier B.V.

  • 92.
    Johansson, Jörgen
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Centrum för innovations-, entreprenörskaps- och lärandeforskning (CIEL).
    Holmquist, Mats
    Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI).
    Jonasson, Mikael
    Högskolan i Halmstad, Akademin för lärande, humaniora och samhälle, Centrum för lärande, kultur och samhälle (CLKS), Lärande, Profession och Samhällsutveckling.
    Mattsson, Marie
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Ulvenblad, Per-Ola
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Centrum för innovations-, entreprenörskaps- och lärandeforskning (CIEL).
    Weisner, Stefan
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Slututvärdering av det svenska landsbygdsprogrammet 2007–2013: DELRAPPORT IV : Synteser för en hållbar landsbygdsutveckling : Utvärdering av programmets samlade effekter2017Rapport (Fagfellevurdert)
    Abstract [sv]

    Denna rapport är en del av utvärderingen av landsbygdsprogrammet 2007–2013. Fyra grupper med forskare från universitet och högskolor har gjort slututvärderingen. Den publiceras i fyra delrapporter varav detta är en. Frågor som handlar om hela programmet besvaras huvudsakligen i delrapport IV. Frågor om enskilda åtgärder besvaras i de tre andra delrapporterna. En översikt av vilka frågor som besvaras i vilken rapport finns på följande sidor.

    Slututvärderingen görs för att besvara EU-gemensamma och specifika svenska utvärderingsfrågor om vilka effekter programmet har haft, i vilken utsträckning det har bidragit till att uppfylla målen och hur effektivt detta har gjorts.

    Utvärderingssekretariatet vid Jordbruksverket ansvarar för att de svenska EU-programmen där Jordbruksverket är förvaltande myndighet blir utvärderade. Det innebär att utvärderingssekretariatet beställer och genomför utvärderingar av landsbygdsprogrammet, havs- och fiskeriprogrammet samt programmet för lokalt ledd utveckling inom regionalfonden och socialfonden. Programmen utvärderas dels var för sig men också tillsammans. Utvärderingarna görs i relation till målen i programmen och de övergripande EU 2020-målen.

    De flesta utvärderingarna genomförs av externa aktörer. Vi tar hjälp av forskare för att kvalitetsgranska rapporterna innan de publiceras. I slutet av rapporterna finns ett utlåtande från granskarna. Rapporterna publiceras i en särskild rapportserie och rapportförfattarna är ansvariga för slutsatserna. Slutsatserna utgör inte Jordbruksverkets officiella ståndpunkt.

    /Utvärderingssekretariatet vid Jordbruksverket

  • 93.
    Johansson, Maria
    et al.
    Environmental Psychology, Department of Architecture and Built Environment, Lund University, Lund, Sweden.
    Pedersen, Eja
    Environmental Psychology, Department of Architecture and Built Environment, Lund University, Lund, Sweden.
    Weisner, Stefan
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Assessing cultural ecosystem services as individuals’ place-based appraisals2019Inngår i: Urban Forestry & Urban Greening, ISSN 1618-8667, E-ISSN 1610-8167, Vol. 39, s. 79-88Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Though the existence of cultural ecosystem services is dependent on people’s activities and experiences, these services are still commonly assessed using top–down approaches. In this study, appraisal theory and research into human responses to natural environments formed the basis of a systematic multilevel investigation of appraisals of created wetland areas. The aim was to explore how appraisals could be used as a bottom–up approach to assessing the perceived contribution of wetland areas s to people’s quality of life (QoL). In total, 111 participants assessed environmental perceptions, affective experiences, and restorative potentials on site at three wetlands in Sweden. The results indicate that wetland areas and specific places with different ecological functions within these areas were appraised significantly differently. Moreover these places were perceived to support various QoL aspects to different degrees. Concepts and methods tested here give environmental planners hands-on tools for facilitating communication with expected users about the cultural ecosystem services of created wetland areas. © 2019

  • 94.
    Johansson, Staffan
    et al.
    Volvo Group Trucks Technology, Vehicle Engineering, Gothenburg, Sweden.
    Nilsson, Per H.
    Volvo Group Trucks Technology, Advanced Technology & Research, Gothenburg, Sweden.
    Ohlsson, Robert
    Volvo Group Trucks Technology, Powertrain Engineering, Gothenburg, Sweden.
    Rosén, Bengt Göran
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    A Novel Approach to Reduction of Frictional Losses in a Heavy-Duty Diesel Engine by Reducing the Hydrodynamic Frictional Losses2017Inngår i: Advances in Tribology, ISSN 1687-5915, E-ISSN 1687-5923, Vol. 2017, s. 1-17, artikkel-id 9240703Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    An important parameter in the reduction of fuel consumption of heavy-duty diesel engines is the Power Cylinder Unit (PCU); the PCU is the single largest contributor to engine frictional losses. Much attention, from both academia and industry, has been paid to reducing the frictional losses of the PCU in the boundary and mixed lubrication regime. However, previous studies have shown that a large portion of frictional losses in the PCU occur in the hydrodynamic lubrication regime. A novel texturing design with large types of surface features was experimentally analyzed using a tribometer setup. The experimental result shows a significant reduction of friction loss for the textured surfaces. Additionally, the textured surface did not exhibit wear. On the contrary, it was shown that the textured surfaces exhibited a smaller amount of abrasive scratches on the plateaus (compared to the reference plateau honed surface) due to entrapment of wear particles within the textures. The decrease in hydrodynamic friction for the textured surfaces relates to the relative increase of oil film thickness within the textures. A tentative example is given which describes a method of decreasing hydrodynamic frictional losses in the full-scale application. © 2017 Staffan Johansson et al.

  • 95.
    Johansson, Staffan
    et al.
    Volvo Technology AB, Gothenburg, Sweden.
    Nilsson, Per H
    Volvo Technology AB, Gothenburg, Sweden.
    Ohlsson, Robert
    Volvo Technology AB, Gothenburg, Sweden.
    Rosén, Bengt Göran
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Simulation and experimental analysis of the contact between oil control ring and cylinder liner in a heavy duty diesel engine2013Inngår i: Tribologie und Schmierungstechnik, ISSN 0724-3472, Vol. 60, nr 3, s. 23-33Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In heavy-duty diesel engines the piston system is the largest source of frictional losses, accounting for about 50 % of the total frictional losses. Due to the high tangential force of the oil control piston ring this component is responsible for a considerable amount of the total friction losses. The primary aim of this study was to determine the correlation between different cylinder liner surface morphology and friction; the secondary aim was to validate the simulation model using reciprocating tribometer experiments. A novel deterministic simulation approach was used to analyse the frictional interaction between oil control ring and cylinder. Multi variate analysis was used to analyse the effect of different cylinder liner surfaces on frictional outcome. Simulated results were compared to tribometer experiments. The simulation results show that a smaller honing angle decreases both hydrodynamic and boundary friction and that average level of plateau amplitude is most beneficial to decrease frictional losses. The simulation result also helps gaining insight into previous engine test result. Future work includes additional verification of the positive simulation result.

  • 96.
    John, Shobin
    et al.
    Högskolan i Halmstad.
    Cabanettes, Frederic
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS). University of Lyon – ENISE, Saint-Etienne, France.
    Etievant, Lucas
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap. University of Lyon – ENISE, Saint-Etienne, France.
    Lööf, Pär-Johan
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Dimkovski, Zlate
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Rosén, Bengt Göran
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Running in of superfinishing surfaces in lubricated rolling sliding contacts2017Inngår i: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts, 2017, s. 62-64Konferansepaper (Fagfellevurdert)
  • 97.
    John, Shobin
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
    El-Ghoul, Zoel
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
    Dimkovski, Zlate
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lööf, Pär-Johan
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lundmark, Jonas
    Applied Nano Surfaces AB, Uppsala, Sweden.
    Mohlin, Johan
    Gnutti Carlo Sweden AB, Gothenburg, Sweden.
    Friction between pin and roller of a truck's valvetrain2019Inngår i: Surface Topography: Metrology and Properties, E-ISSN 2051-672X, Vol. 7, nr 1, artikkel-id 014001Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In order to minimize the fuel consumption in internal combustion engines, the frictional losses must be minimized between the moving parts such as the sliding bearings. In this study, the sliding friction between the pin and roller in a heavy duty truck engine's valvetrain has been investigated. Three combinations of production components with different surface treatment were used: steel pin with steel roller, steel pin with WS2 coating inside the roller and PVD coated steel pin with steel roller. In-house test rig was used, enabling controlled conditions close to the real engine. A new method for alignment using a laser scanner was introduced together with high resolution tactile measurements of radial displacement during test. Surface topography of pins and rollers was measured before test with a mechanical stylus instrument. The WS2 showed 3.1 times and the PVD showed 2.5 times lower friction than the steel type at low speeds. Even though the friction reduction of WS2 over the PVD is not large, the important advantage is that the WS2 can be manufactured at lower costs than the PVD one. Good correlations among the friction, initial roughness and radial displacements were also found.

  • 98.
    John, Shobin
    et al.
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
    El-Ghoul, Zoel-Fikar
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap.
    Dimkovski, Zlate
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lööf, Pär-Johan
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Lundmark, Jonas
    Applied Nano Surfaces AB, Uppsala, Sweden.
    Mohlin, Johan
    Gnutti Carlo Sweden AB, Gothenburg, Sweden.
    Friction between Pin and Roller of a Truck’s Valvetrain2017Inngår i: Mets&Props 2017: 16th International Conference on Metrology and Properties of Engineering Surfaces: Conference abstracts, 2017, s. 193-194Konferansepaper (Fagfellevurdert)
  • 99.
    Johnson, Urban
    et al.
    Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI).
    Parker, James
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Ivarsson, Andreas
    Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI).
    Perceived challenges during participation in a six month outdoor gym exercise programme: participants reflections2019Inngår i: Abstract book: The 15th European Congress of Sport and Exercise Psychology – Building the Future of Sport and Exercise Psychology / [ed] B. Strauss et al., 2019, s. 62-62Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Background and objective: Research has demonstrated positive associations between park-based outdoor gyms and physical activity (Rung et al., 2011). Few studies have evaluated potential challenges with outdoor gyms on physical activity, especially interventions using smartphone Apps (Johnson et al., 2019). The purpose was to study the participant’s perceived challenges during participation in a six-month outdoor gym program.

    Methods: Ten participants (age = 50.3, SD = 9.2), with low levels of physical activity were interviewed at the end of the six-month intervention (male = 2; female =8). At the start of the intervention participants received a smartwatch and the “ParkStark” exercise app, along with an individual motivational interviewing coaching sessions.

    Results/findings: A thematic content analysis of the interview data generated three core themes of perceived challenges experienced during the intervention: negative life event stressors, problems managing the smartwatch and an exercise app, and, lack of motivation. The results indicated both structural and personal challenges, likely to have a negative effect on the adherence to the intervention protocol.

    Conclusions: It is important to develop simple and user-friendly communication systems. When designing outdoor gyms, it is recommended to organize opportunity for continuous communication with significant others to facilitate motivation and adherence for sustainable exercise.

  • 100.
    Karlsson, Jan
    et al.
    Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI).
    Winroth, Jan
    Högskolan Väst, Trollhättan, Sweden.
    Bremander, Ann
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Haglund, Emma
    Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Rydberglaboratoriet för tillämpad naturvetenskap (RLAS).
    Holmquist, Mats
    Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI).
    Lindgren, Eva-Carin
    Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI).
    Lydell, Marie
    Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI).
    Staland Nyman, Carin
    Högskolan i Halmstad, Akademin för hälsa och välfärd, Centrum för forskning om välfärd, hälsa och idrott (CVHI).
    Förändringsledarskap vid digital transformation inom vård och omsorg: En sammanfattande rapport från kompetensutvecklingsprojektet ”Trygg motivation och inspiration” i Kungsbacka kommun 20182018Rapport (Annet vitenskapelig)
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