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  • 351.
    Chen, Lei
    et al.
    Viktoria Swedish ICT, Gothenburg, Sweden.
    Englund, Cristofer
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research. Viktoria Swedish ICT, Gothenburg, Sweden & SAFER Vehicle and Traffic Safety Centre, Chalmers University of Technology, Gothenburg.
    Cooperative Intersection Management: A Survey2016In: IEEE transactions on intelligent transportation systems (Print), ISSN 1524-9050, E-ISSN 1558-0016, Vol. 17, no 2, p. 570-586Article, review/survey (Refereed)
    Abstract [en]

    Intersection management is one of the most challenging problems within the transport system. Traffic light-based methods have been efficient but are not able to deal with the growing mobility and social challenges. On the other hand, the advancements of automation and communications have enabled cooperative intersection management, where road users, infrastructure, and traffic control centers are able to communicate and coordinate the traffic safely and efficiently. Major techniques and solutions for cooperative intersections are surveyed in this paper for both signalized and nonsignalized intersections, whereas focuses are put on the latter. Cooperative methods, including time slots and space reservation, trajectory planning, and virtual traffic lights, are discussed in detail. Vehicle collision warning and avoidance methods are discussed to deal with uncertainties. Concerning vulnerable road users, pedestrian collision avoidance methods are discussed. In addition, an introduction to major projects related to cooperative intersection management is presented. A further discussion of the presented works is given with highlights of future research topics. This paper serves as a comprehensive survey of the field, aiming at stimulating new methods and accelerating the advancement of automated and cooperative intersections. © 2015 IEEE.

  • 352.
    Chen, Lei
    et al.
    Research Institutes of Sweden, RISE Viktoria, Lindholmspiren 3A, Gothenburg, 417 56, Sweden.
    Englund, Cristofer
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Every Second Counts: Integrating Edge Computing and Service Oriented Architecture for Automatic Emergency Management2018In: Journal of Advanced Transportation, ISSN 0197-6729, E-ISSN 2042-3195, p. 13-, article id 7592926Article in journal (Refereed)
    Abstract [en]

    Emergency management has long been recognized as a social challenge due to the criticality of the response time. In emergency situations such as severe traffic accidents, minimizing the response time, which requires close collaborations between all stakeholders involved and distributed intelligence support, leads to greater survival chance of the injured. However, the current response system is far from efficient, despite the rapid development of information and communication technologies. This paper presents an automated collaboration framework for emergency management that coordinates all stakeholders within the emergency response system and fully automates the rescue process. Applying the concept of multiaccess edge computing architecture, as well as choreography of the service oriented architecture, the system allows seamless coordination between multiple organizations in a distributed way through standard web services. A service choreography is designed to globally model the emergency management process from the time an accident occurs until the rescue is finished. The choreography can be synthesized to generate detailed specification on peer-to-peer interaction logic, and then the specification can be enacted and deployed on cloud infrastructures. © 2018 Lei Chen and Cristofer Englund.

  • 353.
    Chen, Lei
    et al.
    Viktoria Swedish ICT, Göteborg, Sweden.
    Habibovic, Azra
    Viktoria Swedish ICT, Göteborg, Sweden.
    Englund, Cristofer
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research. Viktoria Swedish ICT, Göteborg, Sweden.
    Voronov, Alexey
    Viktoria Swedish ICT, Göteborg, Sweden.
    Walter, Anders Lindgren
    MTO Säkerhet, Swedish Road Administration, Stockholm Bypass Project, Stockholm, Sweden.
    Coordinating dangerous goods vehicles: C-ITS applications for safe road tunnels2015In: 2015 IEEE Intelligent Vehicles Symposium (IV), Piscataway, NJ: IEEE, 2015, p. 156-161, article id 7225679Conference paper (Refereed)
    Abstract [en]

    Despite the existing regulation efforts and measures, vehicles with dangerous goods still pose significant risks on public safety, especially in road tunnels. Solutions based on cooperative intelligent transportation system (C-ITS) are promising measures, however, they have received limited attention. We propose C-ITS applications that coordinate dangerous goods vehicles to minimize the risk by maintaining safe distances between them in road tunnels. Different mechanisms, including global centralized coordination, global distributed coordination, and local coordination, are proposed and investigated. A preliminary simulation is performed and demonstrates their effectiveness. © 2015 IEEE.

  • 354.
    Chowdhury, Soumitra
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Co-creation of Innovative Digital Services2012Conference paper (Refereed)
    Abstract [en]

    In the context of digital innovation, this paper discusses co-creation of digital services with the help of translation processes described in the Actor-Network Theory (ANT). While using the translation processes such as problematization, interessement and enrolment, the paper delineates how different stakeholders can be involved in the co-creation of innovative digital services. Thus the paper makes a contribution by presenting the co-creation of digital services in the perspective of translation processes of ANT by showing how different actors can be involved in co-creation of digital services. ‘Establishing trust on digital innovation’ and ‘prioritization during digital innovation’ are identified as influential issues for the involvement of actors during digital innovation. In that way, the paper also makes contribution to the emerging literature on digital innovation.

  • 355.
    Chowdhury, Soumitra
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Expanding Business from Products to Digital Services: Value Dimensions of Digital Services Enabled by Embedded Technology2014In: Proceedings of the 8th Mediterranean Conference on Information Systems / [ed] Mola, L., Carugati, A., Kokkinaki, A., Pouloudi, N., 2014, p. Paper 12-Conference paper (Refereed)
    Abstract [en]

    Manufacturing firms are now embedding digital technology into products with an aim to offer digital services to their customers. Digital services create opportunities for firms to add new value dimensions to their businesses as firms now can expand their businesses from tangible products to digital services. Existing research explains three value dimensions. ‘Value-in-exchange’ is traditionally followed by manufacturing firms where they determine monetary value for their products and exchange the value with customers. Recent research argues that ‘value-in-exchange’ is not customer centric and therefore to gain customer value, ‘value-in-use’ and ‘value-in-cocreation’ are necessary. With growing utilization of embedded digital technology in products, new digital services are rendered and new value dimensions are emanating. Existing research informs little about the value dimensions of digital services that result from the combination of digital technology and tangible products. Therefore, in this research, we seek answer to the question, ‘What are the value dimensions of digital services that are enabled by embedded digital technology in tangible products?’ A qualitative study has been conducted to investigate Remote Diagnostics Services (RDS) for vehicles. Along with the three known value dimensions, that is, value-in-exchange, value-in-use and value-incocreation, this research contributes to knowledge by showing two new value dimensions: ‘value-in-connectivity’ and ‘value-in-architecture’.

  • 356.
    Chowdhury, Soumitra
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab). Department of Applied Information Technology, University of Gothenburg, Gothenburg, Sweden.
    Service Logic in Digitalized Product Platforms: A Study of Digital Service Innovation in the Vehicle Industry2015Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The digitalization of products has become an important driver for service innovation in manufacturing firms. The embedding of digital technology in previously non-digital products creates digitalized product platforms that enable digital service innovation. Digital service innovation offers new business opportunities for manufacturing industries, as well as challenges established premises for value creation.  While digital service innovation can be found in many manufacturing industries, this thesis studies service logic in digitalized product platforms in the vehicle industry.

    Existing Information Systems (IS) literature presents challenges in digital service innovation relating to value, architecture, and generativity. The design of the architecture of digitalized product platforms requires the identification and combination of digital and non-digital assets. Understanding the architectural aspects is useful in digital service innovation. Moreover, with growing instances of generative digital technologies, it is challenging to develop strategies to leverage generativity for service design in digitalized product platforms. While digital technologies are embedded in products, the role of technology-embeddedness in value creation of digital services is relatively unexplored. Drawing on these challenges, this thesis describes and conceptualizes the underlying premises brought by the architecture and generativity to the value creation of services in digitalized product platforms. The research question addressed in this thesis is: What are the underlying premises for services in digitalized product platforms?

    To address the question, an interpretive qualitative research approach was adopted in a collaborative research project concerning services enabled by digitalization of vehicles. Drawing on digital innovation and service literature, this thesis presents a theoretical perspective on the role of the architecture and generativity of digitalized product platforms for value creation of digital services. This perspective is conceptualized as underlying premises for this specific class of services. The premises frame the service logic in digitalized product platforms and provide a ground for understanding services in digitalized product platforms in relation to value dimensions, architecture and generativity. The premises are based on five concepts: value-in-architecture, value-in-connectivity, fundamental asset for value creation, mutual dependence of modular and layered modular assets, and re-evaluation of value propositions. The proposed premises offer a basis for understanding value creation of this class of services, and guidance for manufacturing firms designing digitalized product platforms.

  • 357.
    Chowdhury, Soumitra
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Akram, Asif
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Challenges and Opportunities Related to Remote Diagnostics: An IT-based Resource Perspective2013In: International Journal of Information Communication Technologies and Human Development, ISSN 1935-5661, E-ISSN 1935-567X, Vol. 5, no 3, p. 80-96Article in journal (Refereed)
    Abstract [en]

    Remote diagnostics is expanding the business scope of vehicle manufacturers, ranging from products to services. In this paper, we focus on investigating the business challenges and opportunities related to the remote diagnostics of vehicles from an IT-based resource perspective. Remote diagnostics involves technology, human skills and intangibles. IT-based resources consist of physical IT infrastructure, human IT skills and IT-enabled intangibles. In this study, we find that remote diagnostics not only faces challenges in these three categories of IT-based resource, but also creates opportunities. One contribution of this paper is to provide an overview of the challenges and opportunities for business related to the technology. The paper also makes a contribution to information systems by shedding light on the discussion of digital infrastructure. It also highlights the application of IT-based resource perspective to find out the business challenges and opportunities of an emerging technology like remote diagnostics.

  • 358.
    Chowdhury, Soumitra
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Akram, Asif
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    E-Maintenance: Opportunities and Challenges2011In: Proceedings of IRIS 2011 / [ed] Leino, Timo, Turku, Finland: Turku Centre for Computer Science , 2011, p. 68-81Conference paper (Refereed)
    Abstract [en]

    E-maintenance offers various opportunities as well as challenges in contemporary business undergoing transformation. This paper provides an overview of opportunities and challenges in different areas related to e-maintenance. Literature review and empirical findings through action oriented research give way to identify and present these opportunities and challenges. One contribution of the paper is, it finds the opportunities and challenges with e-maintenance in different industries which creates a pathway for future direction in further studies regarding e-maintenance. The findings indicate that there is much potential to study these with respect to technology and business.

  • 359.
    Chowdhury, Soumitra
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Akram, Asif
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Åkesson, Maria
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    E-Maintenance as an Emerging Customer Value Generating IT-Enabled Resource2012Conference paper (Refereed)
    Abstract [en]

    This paper reports business related challenges and opportunities for e-maintenance as an emerging customer value generating IT-enabled resource. The research study is concerned with the e- maintenance based on remote diagnostics in the vehicle industry. E-maintenance of vehicles is of great importance as e-maintenance technology has great potential to provide various state of the art maintenance related services for the vehicles. This emerging technology brings challenges and opportunities to generate value both for the companies and their customers. In this paper, we have presented several business related challenges and opportunities for e-maintenance. In the form of a set of propositions, the contribution of this paper is to conceptualize e-maintenance as an emerging customer value generating IT-enabled resource by showing challenges and opportunities related to it.

  • 360.
    Chowdhury, Soumitra
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Bergquist, Magnus
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab). University of Gothenburg, Gothenburg, Sweden.
    Åkesson, Maria
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Architectural Characteristics of Digital Services Enabled by Embedded Technology: A Study on Remote Diagnostics Services2014In: Proceedings of the 47th Annual Hawaii International Conference on System Sciences: 6-9 January 2014: Waikoloa, Hawaii / [ed] Ralph H. Sprague, Jr., Los Alamitos, CA: IEEE Computer Society, 2014, p. 3909-3918Conference paper (Refereed)
    Abstract [en]

    In this paper, we characterize the architecture of digital services that are enabled by embedded technology. Digitalization with embedded technology in physical products has become a common phenomenon. In spite of growing instance of such digitalization, little is known about the architectural characteristics of digital services enabled by embedded technology. Based on a research on vehicular remote diagnostics services, we characterize the architecture of such digital services. Following the framework on layered modular architecture continuum, our findings provide the following architectural characteristics: i) the architecture of the digital services spans along the layered modular architecture continuum, ii) the application program of the digital services is simultaneously de-coupled and partly coupled with the embedded devices, iii) there exist layers within layer of the digital services, iv) application program layer of the digital services is a closed innovation platform. © 2014 IEEE

  • 361.
    Chowdhury, Soumitra
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Åkesson, Maria
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    A Proposed Conceptual Framework For Identifying The Logic Of Digital Services2011In: Proceedings of the 15th Pacific Asia Conference on Information Systems: Queensland University of Technology (QUT) in Brisbane, Australia, from 7-11 July 2011, Brisbane, Australia: Association for Information Systems, 2011Conference paper (Refereed)
    Abstract [en]

    In this paper, we propose a conceptual framework for identifying the logic of digital services. Digital services are those services that we acquire after the digitalization of previously non-digital products or services. The objective of the framework is to apply it in identifying the logic of digital services which are the results of digital innovation in the context of remote diagnostic services in the vehicle industry. While building the framework, looking at the transformation of the non-digital to digital service and the involvement of physical products, i.e., digital devices in the transformation, it was found essential to identify the logic of the digital services on the basis of service logic and goods logic.For that purpose, we have reviewed the literature on service logic and goods logic as those logics discuss differently about the determination and meaning of value, role of customer, role of physical products, primary unit of exchange and some other aspects which are important to know in case of transforming a non-digital service to digital service. These logics and the concept of digital innovation are utilized in building the framework for identifying the logic of digital services.

  • 362.
    Churchill, Martin
    et al.
    Swansea University, Swansea, Wales, United Kingdom.
    Mosses, Peter D.
    Swansea University, Swansea, Wales, United Kingdom.
    Mousavi, Mohammad Reza
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES). Eindhoven University of Technology, Eindhoven, The Netherlands.
    Modular Semantics for Transition System Specifications with Negative Premises2013In: Proceedings of the 24th International Conference on Concurrency Theory / [ed] Pedro R. D'Argenio & Hernán Melgratti, Heidelberg: Springer Berlin/Heidelberg, 2013, p. 46-60Conference paper (Refereed)
    Abstract [en]

    Transition rules with negative premises are needed in the structural operational semantics of programming and specification constructs such as priority and interrupt, as well as in timed extensions of specification languages. The well-known proof-theoretic semantics for transition system specifications involving such rules is based on well-supported proofs for closed transitions. Dealing with open formulae by considering all closed instances is inherently non-modular - proofs are not necessarily preserved by disjoint extensions of the transition system specification. Here, we conservatively extend the notion of well-supported proof to open transition rules. We prove that the resulting semantics is modular, consistent, and closed under instantiation. Our results provide the foundations for modular notions of bisimulation such that equivalence can be proved with reference only to the relevant rules, without appealing to all existing closed instantiations of terms. © 2013 Springer-Verlag.

  • 363.
    Conache, Gabriela
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), MPE-lab.
    Gray, Struan M.
    Avd. f. Fasta tillståndets fysik, Lunds Universitet.
    Bordag, Michael
    Institute for Theoretical Physics, Leipzig University.
    Ribayrol, Aline
    Avd. f. Fasta tillståndets fysik, Lunds Universitet.
    Fröberg, Linus
    Avd. f. Fasta tillståndets fysik, Lunds Universitet.
    Samuelson, Lars
    Avd. f. Fasta tillståndets fysik, Lunds Universitet.
    Pettersson, Håkan
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), MPE-lab.
    Montelius, Lars
    Avd. f. Fasta tillståndets fysik, Lunds Universitet.
    AFM-based manipulation of InAs nanowires2008In: Proceedings of the IVC-17 (17th International Vacuum Congress) [also] ICSS-13 (13th International Conference on Surface Science) [also] ICN+T-2007 (International Conference on Nanoscience and Technology): 2-6 July 2007, Stockholm, Sweden, Bristol: Institute of Physics (IOP), 2008, Vol. 100, no 5, 1, p. 052051-052051-4Conference paper (Refereed)
    Abstract [en]

    A controlled method of manipulation of nanowires was found using the tip of an Atomic Force Microscope (AFM). Manipulation is done in the ‘Retrace Lift’ mode, where feedback is turned off for the reverse scan and the tip follows a nominal path. The effective manipulation force during the reverse scan can be changed by varying an offset in the height of the tip over the surface. Using this method, we have studied InAs nanowires on different substrates. We have also investigated interactions between wires and with gold features patterned onto the substrates.

  • 364.
    Conache, Gabriela
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Applied Mathematics and Physics (CAMP).
    Gray, Struan M.
    Solid State Physics/Nanometer Consortium, Lund University, Box 118, S-221 00, Lund, Sweden.
    Ribayrol, Aline
    Solid State Physics/Nanometer Consortium, Lund University, Box 118, S-221 00, Lund, Sweden.
    Fröberg, Linus E.
    Solid State Physics/Nanometer Consortium, Lund University, Box 118, S-221 00, Lund, Sweden.
    Samuelson, Lars
    Solid State Physics/Nanometer Consortium, Lund University, Box 118, S-221 00, Lund, Sweden.
    Pettersson, Håkan
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Applied Mathematics and Physics (CAMP).
    Montelius, Lars
    Solid State Physics/Nanometer Consortium, Lund University, Box 118, S-221 00, Lund, Sweden.
    Friction measurements of InAs nanowires on Silicon nitride by AFM manipulation2009In: Small, ISSN 1613-6810, Vol. 5, no 2, p. 203-207Article in journal (Refereed)
    Abstract [en]

    A study was conducted to perform friction measurements of InAs nanowires (NW) on silicon nitride (Si 3N 4) through atomic force microscopy (AFM) manipulation. The investigations revealed the friction force per unit length for sliding and static friction over a range of nanowire diameters. It was found that there is a significant difference between the coefficients of the two sliding modes for large wires. It was also found that the difference between the two sliding modes disappears at smaller diameters and the sliding friction becomes equal with the static friction. The AFM investigations were performed on a Nanoscope IIIa Dimension 3100, using rectangular cantilevers, with a nominal spring constant of 30 N m -1. The nanowires were manipulated, using the 'Retrace Lift' mode of the AFM controller. The friction force per unit length was gathered from the local curvature of the NWs, using standard elasticity theory.

  • 365.
    Conache, Gabriela
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), MPE-lab.
    Gray, Struan M.
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Sweden.
    Ribayrol, Aline
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Sweden.
    Fröberg, Linus
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Sweden.
    Samuelson, Lars
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Sweden.
    Montelius, Lars
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Sweden.
    Pettersson, Håkan
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), MPE-lab.
    Comparative friction measurements of InAs nanowires on three substrates2010In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 108, no 9, p. 094307-094307-5Article in journal (Refereed)
    Abstract [en]

    We have investigated friction between InAs nanowires and three different substrates: SiO2, fluorosilanized SiO2, and Si3N4. The nanowires were pushed laterally with the tip of an atomic force microscope and the friction force per unit length for both static and sliding friction was deduced from the equilibrium shape of the bent wires. On all three substrates, thick wires showed a difference between sliding and static friction of up to three orders of magnitude. Furthermore, all substrates display a transition to stick-slip motion for nanowires with a diameter of less than about 40 nm. Hydrophobic and hydrophilic substrates display similar friction behavior suggesting that a condensed water layer does not strongly influence our results. The patterns and trends in the friction data are similar for all three substrates, which indicates that they are more fundamental in character and not specific to a single substrate. ©2010 American Institute of Physics.

  • 366.
    Conache, Gabriela
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), MPE-lab. Lund University, Solid State Physics/Nanometer Consortium, Box 118, S-221 00, Lund, Sweden.
    Gray, Struan M.
    Lund University, Solid State Physics/Nanometer Consortium, Box 118, S-221 00, Lund, Sweden.
    Ribayrol, Aline
    Lund University, Solid State Physics/Nanometer Consortium, Box 118, S-221 00, Lund, Sweden.
    Fröberg, Linus
    Lund University, Solid State Physics/Nanometer Consortium, Box 118, S-221 00, Lund, Sweden.
    Samuelson, Lars
    Lund University, Solid State Physics/Nanometer Consortium, Box 118, S-221 00, Lund, Sweden.
    Pettersson, Håkan
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), MPE-lab.
    Montelius, Lars
    Lund University, Solid State Physics/Nanometer Consortium, Box 118, S-221 00, Lund, Sweden.
    Nanowire friction with an applied bias2009Conference paper (Refereed)
    Abstract [en]

    Recently, we have shown how the friction acting on nanowires pushed across a surface by an AFM tip can be determined by measuring the radius of curvature of the bent wire aŸer manipulation. This technique allows us to study the friction properties of an extended mesoscale contact. Our main focus has been to determine whether such contacts behave like macroscopic objects, in which dišerences between the 'true' and 'apparent' contact areas play a key role and friction varies linearly with the applied normal force, or whether they are more like atomic-scale point contacts, wheremore fundamental processes dominate and friction oŸen is independent of the normal force. In this work we show how the friction between InAs nanowires and an insulating silicon nitride layer on a conductive silicon substrate varies when a DC voltage is applied to the AFM tip during manipulation. e tip charges the capacitor formed by the wire and the grounded silicon back contact, giving rise to attractive Coulomb forces and thus increasing the contact pressure between the wire and the silicon nitride. In this way we can vary the normal force on the sliding surfaces using a single wire, with a constant structure and contact geometry. Using nanowires of about 40-50 nm diameter and a few microns in length we have applied tip voltages in the range +12 to -12 V. Simplemodeling indicates that these voltages su›ce to give similar levels of band-lling and depletion to when the same wires are used in working wrap-gate or back-gate devices. A monotonic increase of the sliding friction with the voltage applied on the tip was observed. is implies that the friction increases with the normal force and that this mesoscopic system behaves more like a macroscopic contact, despite the nanometer size of the contact in the direction of motion.

  • 367.
    Conache, Gabriela
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), MPE-lab.
    Ribayrol, Aline
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Sweden.
    Fröberg, Linus
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Sweden.
    Borgström, Magnus T.
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Sweden.
    Samuelson, Lars
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Sweden.
    Montelius, Lars
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Sweden.
    Pettersson, Håkan
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), MPE-lab.
    Gray, Struan M.
    Avd. f. Fasta Tillståndets Fysik, Lunds Universitet, Sweden.
    Bias-controlled friction of InAs nanowires on a silicon nitride layer studied by atomic force microscopy2010In: Physical Review B Condensed Matter, ISSN 0163-1829, E-ISSN 1095-3795, Vol. 82, no 3Article in journal (Refereed)
    Abstract [en]

    By studying how nanowires lying on a surface bend when pushed by an atomic force microscopy tip we are able to measure the friction between them and the substrate. Here, we show how the friction between InAs nanowires and an insulating silicon nitride layer varies when a dc voltage is applied to the tip during manipulation. The bias charges the capacitor formed by the wire and the grounded silicon back contact. Electrostatic forces increase the contact pressure and allow us to tune the friction between the wire and the silicon nitride surface. Using nanowires of about 40-70 nm diameter and a few microns in length we have applied biases in the range +12 to -12 V. A monotonic increase of the sliding friction with voltage was observed. This increase in friction with the normal force implies that the mesoscopic nanowire-surface system behaves like a macroscopic contact, despite the nanometer size of the contact in the direction of motion. The demonstrated bias-controlled friction has potential applications in MEMS/NEMS devices.

  • 368.
    Cooney, Martin
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Berck, Peter
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Designing a Robot Which Paints With a Human: Visual Metaphors to Convey Contingency and Artistry2019Conference paper (Refereed)
    Abstract [en]

    Socially assistive robots could contribute to fulfilling an important need for interaction in contexts where human caregivers are scarce–such as art therapy, where peers, or patients and therapists, can make art together. However, current art-making robots typically generate art either by themselves, or as tools under the control of a human artist; how to make art together with a human in a good way has not yet received much attention, possibly because some concepts related to art, such as emotion and creativity, are not yet well understood. The current work reports on our use of a collaborative prototyping approach to explore this concept of a robot which can paint together with people. The result is a proposed design, based on an idea of using visual metaphors to convey contingency and artistry. Our aim is that the identified considerations will help support next steps, toward supporting positive experiences for people through art-making with a robot.

  • 369.
    Cooney, Martin
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Bigun, Josef
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    PastVision: Exploring “Seeing” into the Near Past with Thermal Touch Sensing and Object Detection – For Robot Monitoring of Medicine Intake by Dementia Patients2017Conference paper (Refereed)
    Abstract [en]

    We present PastVision, a proof-of-concept approach that explores combining thermal touch sensing and object detection to infer recent actions by a person which have not been directly observed by a system. Inferring such past actions has received little attention yet in the literature, but would be highly useful in scenarios in which sensing can fail (e.g., due to occlusions) and the cost of not recognizing an action is high. In particular, we focus on one such application, involving a robot which should monitor if an elderly person with dementia has taken medicine. For this application, we explore how to combine detection of touches and objects, as well as how heat traces vary based on materials and a person’s grip, and how robot motions and activity models can be leveraged. The observed results indicate promise for the proposed approach.

  • 370.
    Cooney, Martin
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Bigun, Josef
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    PastVision+: Thermovisual Inference of Recent Medicine Intake by Detecting Heated Objects and Cooled Lips2017In: Frontiers in Robotics and AI, E-ISSN 2296-9144, Vol. 4, article id 61Article in journal (Refereed)
    Abstract [en]

    This article addresses the problem of how a robot can infer what a person has done recently, with a focus on checking oral medicine intake in dementia patients. We present PastVision+, an approach showing how thermovisual cues in objects and humans can be leveraged to infer recent unobserved human-object interactions. Our expectation is that this approach can provide enhanced speed and robustness compared to existing methods, because our approach can draw inferences from single images without needing to wait to observe ongoing actions and can deal with short-lasting occlusions; when combined, we expect a potential improvement in accuracy due to the extra information from knowing what a person has recently done. To evaluate our approach, we obtained some data in which an experimenter touched medicine packages and a glass of water to simulate intake of oral medicine, for a challenging scenario in which some touches were conducted in front of a warm background. Results were promising, with a detection accuracy of touched objects of 50% at the 15 s mark and 0% at the 60 s mark, and a detection accuracy of cooled lips of about 100 and 60% at the 15 s mark for cold and tepid water, respectively. Furthermore, we conducted a follow-up check for another challenging scenario in which some participants pretended to take medicine or otherwise touched a medicine package: accuracies of inferring object touches, mouth touches, and actions were 72.2, 80.3, and 58.3% initially, and 50.0, 81.7, and 50.0% at the 15 s mark, with a rate of 89.0% for person identification. The results suggested some areas in which further improvements would be possible, toward facilitating robot inference of human actions, in the context of medicine intake monitoring.

  • 371.
    Cooney, Martin
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Karlsson, Stefan M.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Impressions of Size-Changing in a Companion Robot2015In: PhyCS 2015 – 2nd International Conference on Physiological Computing Systems, Proceedings / [ed] Hugo Plácido da Silva, Pierre Chauvet, Andreas Holzinger, Stephen Fairclough & Dennis Majoe, SciTePress, 2015, p. 118-123Conference paper (Refereed)
    Abstract [en]

    Physiological data such as head movements can be used to intuitively control a companion robot to perform useful tasks. We believe that some tasks such as reaching for high objects or getting out of a person’s way could be accomplished via size changes, but such motions should not seem threatening or bothersome. To gain insight into how size changes are perceived, the Think Aloud Method was used to gather typical impressions of a new robotic prototype which can expand in height or width based on a user’s head movements. The results indicate promise for such systems, also highlighting some potential pitfalls.

  • 372.
    Cooney, Martin
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Leister, Wolfgang
    Norsk Regnesentral, Oslo, Norway.
    Using the Engagement Profile to Design an Engaging Robotic Teaching Assistant for Students2019In: Robotics, E-ISSN 2218-6581, Vol. 8, no 1, article id 21Article in journal (Refereed)
    Abstract [en]

    We report on an exploratory study conducted at a graduate school in Sweden with a humanoid robot, Baxter. First, we describe a list of potentially useful capabilities for a robot teaching assistant derived from brainstorming and interviews with faculty members, teachers, and students. These capabilities consist of reading educational materials out loud, greeting, alerting, allowing remote operation, providing clarifications, and moving to carry out physical tasks. Secondly, we present feedback on how the robot's capabilities, demonstrated in part with the Wizard of Oz approach, were perceived, and iteratively adapted over the course of several lectures, using the EngagementProfile tool. Thirdly, we discuss observations regarding the capabilities and the development process. Our findings suggest that using a social robot as a teachingassistant is promising using the chosen capabilities and Engagement Profile tool. We find that enhancing the robot's autonomous capabilities and further investigating the role of embodiment are some important topics to be considered in future work. © 2019 by the authors.

  • 373.
    Cooney, Martin
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Menezes, Maria Luiza Recena
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Design for an Art Therapy Robot: An Explorative Review of the Theoretical Foundations for Engaging in Emotional and Creative Painting with a Robot2018In: Multimodal Technologies Interact. Special Issue Emotions in Robots: Embodied Interaction in Social and Non-Social Environments, ISSN 2414-4088, Vol. 2, no 3, article id 52Article in journal (Refereed)
    Abstract [en]

    Social robots are being designed to help support people’s well-being in domestic and public environments. To address increasing incidences of psychological and emotional difficulties such as loneliness, and a shortage of human healthcare workers, we believe that robots will also play a useful role in engaging with people in therapy, on an emotional and creative level, e.g., in music, drama, playing, and art therapy. Here, we focus on the latter case, on an autonomous robot capable of painting with a person. A challenge is that the theoretical foundations are highly complex; we are only just beginning ourselves to understand emotions and creativity in human science, which have been described as highly important challenges in artificial intelligence. To gain insight, we review some of the literature on robots used for therapy and art, potential strategies for interacting, and mechanisms for expressing emotions and creativity. In doing so, we also suggest the usefulness of the responsive art approach as a starting point for art therapy robots, describe a perceived gap between our understanding of emotions in human science and what is currently typically being addressed in engineering studies, and identify some potential ethical pitfalls and solutions for avoiding them. Based on our arguments, we propose a design for an art therapy robot, also discussing a simplified prototype implementation, toward informing future work in the area.

  • 374.
    Cooney, Martin
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Ong, Linda
    I+ srl, Florence, Italy.
    Pashami, Sepideh
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Järpe, Eric
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Ashfaq, Awais
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Avoiding Improper Treatment of Dementia Patients by Care Robots2019Conference paper (Refereed)
    Abstract [en]

    The phrase “most cruel and revolting crimes” has been used to describe some poor historical treatment of vulnerable impaired persons by precisely those who should have had the responsibility of protecting and helping them. We believe we might be poised to see history repeat itself, as increasingly humanlike aware robots become capable of engaging in behavior which we would consider immoral in a human–either unknowingly or deliberately. In the current paper we focus in particular on exploring some potential dangers affecting persons with dementia (PWD), which could arise from insufficient software or external factors, and describe a proposed solution involving rich causal models and accountability measures: Specifically, the Consequences of Needs-driven Dementia-compromised Behaviour model (C-NDB) could be adapted to be used with conversation topic detection, causal networks and multi-criteria decision making, alongside reports, audits, and deterrents. Our aim is that the considerations raised could help inform the design of care robots intended to support well-being in PWD.

  • 375.
    Cooney, Martin
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Pashami, Sepideh
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Pinheiro Sant'Anna, Anita
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Fan, Yuantao
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Nowaczyk, Sławomir
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Pitfalls of Affective Computing: How can the automatic visual communication of emotions lead to harm, and what can be done to mitigate such risks?2018In: WWW '18 Companion Proceedings of the The Web Conference 2018, New York, NY: ACM Publications, 2018, p. 1563-1566Conference paper (Refereed)
    Abstract [en]

    What would happen in a world where people could "see'' others' hidden emotions directly through some visualizing technology Would lies become uncommon and would we understand each other better Or to the contrary, would such forced honesty make it impossible for a society to exist The science fiction television show Black Mirror has exposed a number of darker scenarios in which such futuristic technologies, by blurring the lines of what is private and what is not, could also catalyze suffering. Thus, the current paper first turns an eye towards identifying some potential pitfalls in emotion visualization which could lead to psychological or physical harm, miscommunication, and disempowerment. Then, some countermeasures are proposed and discussed--including some level of control over what is visualized and provision of suitably rich emotional information comprising intentions--toward facilitating a future in which emotion visualization could contribute toward people's well-being. The scenarios presented here are not limited to web technologies, since one typically thinks about emotion recognition primarily in the context of direct contact. However, as interfaces develop beyond today's keyboard and monitor, more information becomes available also at a distance--for example, speech-to-text software could evolve to annotate any dictated text with a speaker's emotional state.

  • 376.
    Cooney, Martin
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Sant'Anna, Anita
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Avoiding Playfulness Gone Wrong: Exploring Multi-objective Reaching Motion Generation in a Social Robot2017In: International Journal of Social Robotics, ISSN 1875-4791, E-ISSN 1875-4805, Vol. 9, no 4, p. 545-562Article in journal (Refereed)
    Abstract [en]

    Companion robots will be able to perform useful tasks in homes and public places, while also providing entertainment through playful interactions. “Playful” here means fun, happy, and humorous. A challenge is that generating playful motions requires a non-trivial understanding of how people attribute meaning and intentions. The literature suggests that playfulness can lead to some undesired impressions such as that a robot is obnoxious, untrustworthy, unsafe, moving in a meaningless fashion, or boring. To generate playfulness while avoiding such typical failures, we proposed a model for the scenario of a robot arm reaching for an object: some simplified movement patterns such as sinusoids are structured toward appearing helpful, clear about goals, safe, and combining a degree of structure and anomaly. We integrated our model into a mathematical framework (CHOMP) and built a new robot, Kakapo, to perform dynamically generated motions. The results of an exploratory user experiment were positive, suggesting that: Our proposed system was perceived as playful over the course of several minutes. Also a better impression resulted compared with an alternative playful system which did not use our proposed heuristics; furthermore a negative effect was observed for several minutes after showing the alternative motions, suggesting that failures are important to avoid. And, an inverted u-shaped correlation was observed between motion length and degree of perceived playfulness, suggesting that motions should neither be too short or too long and that length is also a factor which can be considered when generating playful motions. A short follow-up study provided some additional support for the idea that playful motions which seek to avoid failures can be perceived positively. Our intent is that these exploratory results will provide some insight for designing various playful robot motions, toward achieving some good interactions. © 2017, The Author(s).

  • 377.
    Cooney, Martin
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Yang, Can
    Halmstad University, School of Information Technology.
    Arunesh, Sanjana
    Halmstad University, School of Information Technology.
    Padi Siva, Abhilash
    Halmstad University, School of Information Technology.
    David, Jennifer
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Teaching Robotics with Robot Operating System (ROS): A Behavior Model Perspective2018Conference paper (Refereed)
    Abstract [en]

    Robotics skills are in high demand, but learning robotics can be difficult due to the wide range of required knowledge, increasingly complex and diverse platforms, and components requiring dedicated software. One way to mitigate such problems is by utilizing a standard framework such as Robot Operating System (ROS), which facilitates development through the reuse of opensource code—a challenge is that learning curves can be steep for students who are also first-time users. In the current paper, we suggest the use of a behavior model to structure the learning of complex frameworks like ROS in an engaging way. A practical example is provided, of integrating ROS into a robotics course called the “Design of Embedded and Intelligent Systems” (DEIS), along with feedback suggesting that some students responded positively to learning experiences enabled by our approach. Furthermore, some course materials, videos, and code have been made available online, which we hope might provide useful insights.

  • 378.
    Costa Paiva, Sofia
    et al.
    University of Sao Paolo, São Carlos, Brazil.
    Simao, Adenilso
    University of Sao Paolo, São Carlos, Brazil.
    Varshosaz, Mahsa
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Mousavi, Mohammad Reza
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Complete IOCO Test Cases: A Case Study2016In: A-TEST 2016 - Proceedings of the 7th International Workshop on Automating Test Case Design, Selection, and Evaluation, co-located with FSE 2016, New York, NY: ACM Press, 2016, p. 38-44Conference paper (Refereed)
    Abstract [en]

    Input/Output Transition Systems (IOTSs) have been widely used as test models in model-based testing. Traditionally, input output conformance testing (IOCO) has been used to generate random test cases from IOTSs. A recent test case generation method for IOTSs, called Complete IOCO, applies fault models to obtain complete test suites with guaranteed fault coverage for IOTSs. This paper measures the efficiency of Complete IOCO in comparison with the traditional IOCO test case generation implemented in the JTorX tool. To this end, we use a case study involving five specification models from the automotive and the railway domains. Faulty mutations of the specifications were produced in order to compare the efficiency of both test generation methods in killing them. The results indicate that Complete IOCO is more efficient in detecting deep faults in large state spaces while IOCO is more efficient in detecting shallow faults in small state spaces. © 2016 ACM.

  • 379.
    Cristofer, Englund
    et al.
    Viktoria Swedish ICT, Gothenburg, Sweden.
    Chen, Lei
    Viktoria Swedish ICT, Gothenburg, Sweden.
    Vinel, Alexey
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Lin, Shih-Yang
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Future Applications of VANETs2015In: Vehicular Ad Hoc Networks: Standards, Solutions, and Research / [ed] Claudia Campolo, Antonella Molinaro & Riccardo Scopigno, Cham: Springer Publishing Company, 2015, p. 525-544Chapter in book (Refereed)
    Abstract [en]

    Current transportation systems face great challenges due to the increasing mobility. Traffic accidents, congestion, air pollution, etc., are all calling for new methods to improve the transportation system. With the US legislation in progress over vehicle communications and EU’s finalization of the basic set of standards over cooperative intelligent transportation systems (C-ITS), vehicular ad hoc network (VANET) based applications are expected to address those challenges and provide solutions for a safer, more efficient and sustainable future intelligent transportation systems (ITS). In this chapter, transportation challenges are firstly summarized in respect of safety, efficiency, environmental threat, etc. A brief introduction of the VANET is discussed along with state of the art of VANET-based applications. Based on the current progress and the development trend of VANET, a number of new features of future VANET are identified, together with a set of potential future ITS applications. The on-going research and field operational test projects, which are the major enabling efforts for the future VANET-based C-ITS, are presented. The chapter is of great interest to readers working within ITS for current development status and future trend within the C-ITS area. It is also of interest to general public for an overview of the VANET enabled future transportation system. © Springer International Publishing Switzerland 2015.

  • 380.
    Cronquist, Björn
    et al.
    Kristianstad University College, Sweden.
    Johansson, Lars-Olof
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Innovation in SME: A Case of Firm-Supportive Research2009In: IRIS 32: selected papers of the 32nd Information Systems Research Seminar of Scandinavia : Inclusive design : IRIS 32 was hosted at Molde University College, Norway 9.-12. August 2009 / [ed] Judith Molka-Danielsen, Trondheim: Tapir Akademisk Forlag, 2009, p. 187-201Conference paper (Refereed)
    Abstract [en]

    This paper describes a case of collaboration between academia and business firms in supporting innovation processes. The research developed into a firm-supportive model called the CILO method, named after the CILO project (communication in learning organisations). We describe the outcomes from applying the CILO method in relation to one of the partner companies and discuss the methodological implications in relation to established research models. We propose the notion of firmsupportive research as a concept to consider in research aiming at developing business firms.

  • 381.
    Cronquist, Björn
    et al.
    Lund University, S-22100 Lund, Sweden..
    Johansson, Lars-Olof
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS).
    The CILO method: firm-supportive research approach enhancing enterprise performance2010In: Knowledge Management and Innovation: A Business Competitive Edge Perspective - Proceedings of the 15th International Business Information Management Association Conference, IBIMA 2010, Vols. 1-3 / [ed] Soliman, K S, International Business Information Management Association (IBIMA), 2010, Vol. 2, p. 1239-1251Conference paper (Refereed)
    Abstract [en]

    This paper describes a case of collaboration between academia and business firms in supporting innovation processes based on the CILO method, named after the CILO project (communication in learning organizations). The CILO method is an example of firm-supportive research approach. We describe the outcomes related to enhancing enterprise performance from applying the CILO-method in relation to one of the partner companies. The aim of the paper is to describe and discuss the concept of firm-supportive research in relation to the concept of innovation and to demonstrate how the specific characteristics of this research approach can enhance enterprise performance in one of our partner companies, Flower Systems Ltd.

  • 382.
    Cronquist, Björn
    et al.
    Kristianstad University, Sweden.
    Johansson, Lars-Olof
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Kjellin, H.
    Kristianstad University, Sweden.
    Communication Enabling the Implementation of Innovation2006In: Proceedings of the 29th IRIS, 2006, p. 15-Conference paper (Refereed)
    Abstract [en]

    This paper describes the proposed research approach of a research projectcalled, Communication Enabling the Implementation of Innovation. The point of departurefor the project is a view on innovation described as hard work rather than mere creativityor inventions. This leads to the conclusion that innovation processes can be supportedand enhanced through planned activities. The paper promotes a perspective linkinginnovation to the well established concept of a learning organization. The aim for theresearch project is threefold; 1) to generate a method for the development on an indexmeasuring “innovation maturity” of organizations. 2) to generate specific measures ofinnovation processes and 3) to develop a feedback system enhancing the innovativeorganizations towards a learning organization.

  • 383.
    Crowston, Kevin
    et al.
    Syracuse University School of Information Studies, Syracuse, New York, USA.
    Ihlström Eriksson, Carina
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS).
    Päivärinta, Tero
    University of Agder, Kristiansand, Norway.
    Introduction to genres in communication and digital documents minitrack2008In: Proceedings of the Annual Hawaii International Conference on System Sciences, ISSN 1530-1605, article id 4438833Article in journal (Refereed)
    Abstract [en]

    Rhetoricians since Aristotle have attempted to classify communications into categories or "genres" with similar form, topic or purpose. Given a socially recognized need to communicate, individuals will typically express similar social motives, themes and topics in a communication with similar physical and linguistic characteristics, that is, they will communicate in a recognized genre.

  • 384.
    Dankers, Wouter
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Learning wireless channel models to design real-time communications from vehicles2018Independent thesis Advanced level (degree of Master (Two Years)), 80 credits / 120 HE creditsStudent thesis
    Abstract [en]

    The aim of this project is to analyze a data log of wireless packet traffic, and to produce: (1) models for dynamic fluctuations in wireless channel and link quality, and, (2) a design for real-time communications over the given wireless channel. The models and designs are useful in setting up real-time communications in a vehicular test track (www.astazero.com). The data log came from experimental measurements at the test track. From this data, we fitted simple models for packet losses and retransmissions in the wireless communication system. These models took the form of a combination of a statistical model for the packet losses, with a deterministic model for retransmissions of lost packets. Such fitted models can be used to predict the average quality of vehicle position monitoring based on periodically transmitted position information. Such predictions help us decide the feasibility of safe and reliable conduct of testing with two or more moving test objects.

  • 385.
    Danqing, Ni
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Zao, Sun
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Junwei, Chen
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    On Time Discrete Simulation of cooperative Vehicle's Kinematic Behaviour2012Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The vehicle plays an important role in peoples life in modern times. The vehi- cle's behaviour is a complex and detailed subject, which requiring the knowledge of mathematics and physics. Meanwhile, the vehicles' behaviour is aected by a lot of dierent conditions, such as the driver and the environment. For the purpose of trac safety, simulation is required to analyze the vehicles' behaviour. Vari- eties of behaviour models, based on dierent levels (Macroscopic, Mesoscopic and Microscopic) have been presented. Vehicles are able to interact with each other through the Vehicular Ad Hoc Network (VANET). It is worthwhile to simulate how the behaviour is aected by an exchange of kinematic data. This thesis presents a new simulator, which is designed at microscopic level, based on the graph theory. Not only dierent vehicles' behaviour, but also coop- eration between vehicles can be implemented in the simulator. A new model of collision avoidance is created, incorporating the concept of kinematics and human emulation. The car-following model is also performed for the formation of trac

    ow. Overall, the modeling in the simulator is simplied by ignoring the network disturbances. The data collected from the results of the simulation is used to display a scenario as visualization of a vehicles behaviour.

  • 386.
    David, Jennifer
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Philippsen, Roland
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Task assignment and trajectory planning in dynamic environments for multiple vehicles2015In: Frontiers in Artificial Intelligence and Applications, ISSN 0922-6389, E-ISSN 1879-8314, Vol. 278, p. 179-181Article in journal (Refereed)
    Abstract [en]

    We consider the problem of finding collision-free trajectories for a fleet of automated guided vehicles (AGVs) working in ship ports and freight terminals. Our solution computes collision-free trajectories for a fleet of AGVs to pick up one or more containers and transport it to a given goal without colliding with other AGVs and obstacles. We propose an integrated framework for solving the goal assignment and trajectory planning problem minimizing the maximum cost over all vehicle trajectories using the classical Hungarian algorithm. To deal with the dynamics in the environment, we refine our final trajectories with CHOMP (Covariant Hamiltonian optimization for motion planning) in order to trade off between path smoothness and dynamic obstacle avoidance. © 2015 The authors and IOS Press. All rights reserved.

  • 387.
    David, Jennifer
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Valencia, Rafael
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Iagnemma, Karl
    Massachusetts Institute of Technology, Cambridge, MA, USA.
    Task Assignment and Trajectory Planning in Dynamic environments for Multiple Vehicles2016Conference paper (Refereed)
    Abstract [en]

    We consider the problem of finding collision-free trajectories for a fleet of automated guided vehicles (AGVs) working in ship ports and freight terminals. Our solution computes collision-free trajectories for a fleet of AGVs to pick up one or more containers and transport it to a given goal without colliding with other AGVs and obstacles. We propose an integrated framework for solving the goal assignment and trajectory planning problem minimizing the maximum cost overall vehicle trajectories using the classical Hungarian algorithm.To deal with the dynamics in the environment, we refine our final trajectories with CHOMP (Covariant Hamiltonianoptimization for motion planning) in order to trade off between path smoothness and dynamic obstacle avoidance.

  • 388.
    David, Jennifer
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Valencia, Rafael
    Carnegie Mellon University, Pittsburgh, USA.
    Philippsen, Roland
    Google Inc..
    Bosshard, Pascal
    ETH Zürich, Zürich, Switzerland.
    Iagnemma, Karl
    Massachusetts Institute of Technology, Cambridge, MA, USA.
    Gradient Based Path Optimization Method for Autonomous Driving2017In: 2017 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), [Piscataway, NJ]: IEEE, 2017, p. 4501-4508Conference paper (Refereed)
    Abstract [en]

    This paper discusses the possibilities of extending and adapting the CHOMP motion planner to work with a non-holonomic vehicle such as an autonomous truck with a single trailer. A detailed study has been done to find out the different ways of implementing these constraints on the motion planner. CHOMP, which is a successful motion planner for articulated robots produces very fast and collision-free trajectories. This nature is important for a local path adaptor in a multi-vehicle path planning for resolving path-conflicts in a very fast manner and hence, CHOMP was adapted. Secondly, this paper also details the experimental integration of the modified CHOMP with the sensor fusion and control system of an autonomous Volvo FH-16 truck. Integration experiments were conducted in a real-time environment with the developed autonomous truck. Finally, additional simulations were also conducted to compare the performance of the different approaches developed to study the feasibility of employing CHOMP to autonomous vehicles. ©2017 IEEE

  • 389.
    David, Jennifer
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Valencia, Rafael
    Carnegie Mellon University, Pittsburgh, USA.
    Philippsen, Roland
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Iagnemma, Karl
    Massachusetts Institute of Technology, Cambridge, USA.
    Local Path Optimizer for an Autonomous Truck in a Harbour Scenario2017Conference paper (Refereed)
    Abstract [en]

    Recently, functional gradient algorithms like CHOMP have been very successful in producing locally optimal motion plans for articulated robots. In this paper, we have adapted CHOMP to work with a non-holonomic vehicle such as an autonomous truck with a single trailer and a differential drive robot. An extended CHOMP with rolling constraints have been implemented on both of these setup which yielded feasible curvatures. This paper details the experimental integration of the extended CHOMP motion planner with the sensor fusion and control system of an autonomous Volvo FH-16 truck. It also explains the experiments conducted on the differential-drive robot. Initial experimental investigations and results conducted in a real-world environment show that CHOMP can produce smooth and collision-free trajectories for mobile robots and vehicles as well. In conclusion, this paper discusses the feasibility of employing CHOMP to mobile robots.

  • 390.
    David, Jennifer
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR - Center for Applied Intelligent Systems Research.
    Valencia, Rafael
    The Robotics Institute, Carnegie Mellon University, Pittsburgh, USA.
    Philippsen, Roland
    Iagnemma, Karl
    Massachusetts Institute of Technology, Cambridge, USA.
    Trajectory Optimizer for an Autonomous Truck in Container Terminal2017In: ICRA 2017 Workshop on Robotics and Vehicular Technologies for Self-driving cars, 2017Conference paper (Refereed)
  • 391.
    de Freitas, Edison Pignaton
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Embedded Systems (CERES).
    Allgayer, Rodrigo S.
    Electrical Engineering Department – Federal University of Rio Grande do Sul Porto Alegre, Brazil.
    Heimfarth, Tales
    Computer Science Department – Federal University of Lavras Lavras, Brazil.
    Wagner, Fla ́vio R.
    Institute of Informatics – Federal University of Rio Grande do Sul Porto Alegre, Brazil.
    Larsson, Tony
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Pereira, Carlos E.
    Electrical Engineering Department – Federal University of Rio Grande do Sul Porto Alegre, Brazil.
    Ferreira, Armando M.
    Defense Engineering Graduate Program – Military Institute of Engineering Rio de Janeiro, Brazil.
    Coordination Mechanism and Customizable Hardware Platform to Provide Heterogeneous Wireless Sensor Networks Support2010Conference paper (Refereed)
    Abstract [en]

    This paper presents an effort to support emerging Wireless Sensor Networks applications composed by different types of sensor nodes. The work is composed by two parts, in which the first is dedicated to provide cooperation abilities to sensor nodes, while the second is a customizable hardware platform intended to provide different types of sensor nodes, from those more resource constrained up to the resource-rich ones. A description of a testbed demonstra- tor of the proposed system is provided and comparisons with previous published simulation results denote the feasibility of the proposal.

  • 392.
    de Freitas, Edison Pignaton
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Allgayer, Rodrigo S.
    PPGEE, UFRGS, Brazil.
    Wehrmeister, Marco A.
    PPGC, UFRGS, Brazil.
    Pereira, Carlos E.
    PPGEE, UFRGS, Brazil.
    Larsson, Tony
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Supporting platform for heterogeneous sensor network operation based on unmanned vehicles systems and wireless sensor nodes2009In: 2009 IEEE Intelligent Vehicles Symposium, Volumes 1 and 2 / [ed] Institute of Electrical and Electronics, New York: IEEE Press, 2009, p. 786-791Conference paper (Refereed)
    Abstract [en]

    Advances in vehicle intelligence technology is enabling the development of systems composed of unmanned vehicles, which are able to interact with devices spread on the environment in order to take decisions related to their movements. Sensor networks represent an area that can profit a lot of this new possibilities, as autonomous vehicles can be used to carry sensor devices, which interacting with static sensor nodes can enhance the results provided by the overall system. However, some problems arise in applications' development in such systems due to the network nodes heterogeneity, and also the dynamicity of the environment in which they are deployed, which changes constantly. Thus, new platform solutions are necessary to handle the heterogeneous nodes capabilities in order to facilitate coordination and integration among them. This paper proposes a supporting infrastructure to address these problems composed of an adaptive middleware and a customizable sensor node platform. The goal is to support cooperation in heterogeneous sensor networks, which are composed by static and mobile nodes with different capabilities. The middleware adapts itself in order to manage the very distinct computing resources of the nodes, and also changes in the environment and in the application demands. The customizable sensor node platform allows optimizations in hw/sw modules to meet specific application requirements, allowing the creation of low-end and resource rich nodes that work in an integrated network. In order to illustrate the proposed approach, a system for military surveillance applications is presented as case study.

  • 393.
    de Freitas, Edison Pignaton
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Binotto, Alécio Pedro Delazari
    Fraunhofer IGD / TU Darmstadt, Germany.
    Pereira, Carlos Eduardo
    PPGC UFRGS, Brazil.
    Stork, Andre
    Fraunhofer IGD / TU Darmstadt, Germany.
    Larsson, Tony
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Dynamic activity and task allocation supporting uav teams in surveillance systems2009In: Proceedings of the International Multiconference on Computer Science and Information Technology, 2009. IMCSIT '09, Piscataway, N.J.: IEEE Press, 2009, p. 51-58Conference paper (Refereed)
    Abstract [en]

    The use of Unmanned Aerial Vehicles is increasing in the field of area patrolling and surveil- lance. A great issue that emerge in designing such systems is the target workload distribution over a fleet of UAVs, which generally have different capabilities of sensing and computing power. Targets should be assigned to the most suitable UAVs in order to efficiently perform the end-user initiated missions. To perform these missions, the UAVs require powerful high-performance platforms to deal with many dif- ferent algorithms that make use of massive calculations. The use of COTS hardware (e.g., GPU) presents an interesting low-cost alternative to compose the required platform. However, in order to efficiently use these heterogeneous platforms in a dynamic scenario, such as in surveillance systems, runtime reconfigu- ration strategies must be provided. This paper presents a dynamic approach to distribute the handling of targets among the UAVs and a heuristic method to address the efficient use of the heterogeneous hard- ware that equips these UAVs, with the goal to meet also mission timing requirements. Preliminary simu- lation results of the proposed heuristics are also provided.

  • 394.
    de Freitas, Edison Pignaton
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES). Institute of Informatics, Federal University of Rio Grande do Sul, Brazil.
    Bösch, Bernhard
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE).
    Allgayer, Rodrigo
    Electrical Engineering Department, Universidade Federal do Rio Grande do Sul, Brazil.
    Steinfeld, Leonardo
    Electrical Engineering Institute, Universidad de la República, Uruguay.
    Wagner, Flávio
    Institute of Informatics, Federal University of Rio Grande do Sul, Brazil.
    Carro, Luigi
    Institute of Informatics, Federal University of Rio Grande do Sul, Brazil.
    Pereira, Carlos
    Institute of Informatics, Federal University of Rio Grande do Sul, Brazil; Electrical Engineering Department, Universidade Federal do Rio Grande do Sul, Brazil.
    Larsson, Tony
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Mobile Agents Model and Performance Analysis of a Wireless Sensor Network Target Tracking Application2011In: Smart spaces and next generation wired/wireless networking: 11th International Conference, NEW2AN 2011 and 4th Conference on Smart Spaces, RuSMART 2011, St. Petersburg, Russia, August 22 -25, 2011 ; proceedings / [ed] Sergey Balandin, Heidelberg: Springer Berlin/Heidelberg, 2011, Vol. 6869, p. 274-286Conference paper (Refereed)
    Abstract [en]

    Advances on wireless communication and sensor systems enabled the growing usage of Wireless Sensor Networks. This kind of network is being used to support a number of new emerging applications, thus the importance in studying the efficiency of new approaches to program them. This paper proposes a performance study of an application using high-level mobile agent model for Wireless Sensor Networks. The analysis is based on a mobile object tracking system, a classical WSN application. It is assumed that the sensor nodes are static, while the developed software is implemented as mobile agents by using the AFME framework. The presented project follows a Model-Driven Development (MDD) methodology using UML (Unified Modeling Language) models. Metrics related to dynamic features of the implemented solution are extracted from the deployed application, allowing a design space exploration in terms of metrics such as performance, memory and energy consumption. © Springer-Verlag Berlin Heidelberg 2011.

  • 395.
    de Freitas, Edison Pignaton
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Ferreia, Armando Morado
    Instituto Militar de Engenharia (IME) · Mechanical Engineering Department.
    Pereira, Carlos Eduardo
    Electrical Engineering Department, Military Institute of Engineering, Brazil.
    Larsson, Tony
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Middleware Support in Unmanned Aerial Vehicles and Wireless Sensor Networks for Surveillance Applications2009In: Intelligent Distributed Computing III: Proceedings of the 3rd International Symposium on Intelligent Distributed Computing – IDC 2009, Ayia Napa, Cyprus,October 2009 / [ed] Papadopoulos, George Angelos & Badica, Costin, Berlin/Heidelberg: Springer Berlin/Heidelberg, 2009, p. 289-296Conference paper (Refereed)
    Abstract [en]

    This paper presents the architecture of a middleware that provides an intelligent interoperability support to allow the integration and cooperation among Wireless Sensor Network (WSN) nodes and small Unmanned Aerial Vehicles (UAVs) implementing a surveillance system. The motivation for this study is that the cooperation among distinct types of sensor nodes to achieve common goals can notably enhance the results obtained in surveillance operations. A discussion around the requirements of such systems is also presented, supporting the design decisions and the choice of the techniques employed to develop the middleware. Finally, preliminary results are presented.

  • 396.
    de Freitas, Edison Pignaton
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Heimfarth, Tales
    Computer Science Department UFLA - Brazil.
    Costa, Luiz Augusto Guimarães
    Computer Science Department UFLA - Brazil.
    Ferreira, Armando M.
    Military Institute of Engineering - Brazil.
    Pereira, Carlos Eduardo
    PPGC UFRGS - Brazil.
    Wagner, Flávio Rech
    PPGC UFRGS - Brazil.
    Larsson, Tony
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Centre for Research on Embedded Systems (CERES).
    Analyzing different levels of geographic context awareness in agent ferrying over VANETs2011In: Proceedings of the 2011 ACM Symposium on Applied Computing, New York: ACM Press, 2011, p. 413-418Conference paper (Refereed)
    Abstract [en]

    The use of mobile software agents is a promising approach to implement services over ad hoc networks. This paper presents an analysis of mobile autonomous agents with different degrees of intelligence that allow them to make usage of the positioning information of vehicle carried sensor nodes with different depth of complexity, considering the nodes’ current and future locations. The agents’ intelligence is used to decide their movement during opportunistic connections among the nodes in order to accomplish missions. In this work, the analysis is done over an application of “virtual sensors”, implemented by services provided by the mobile agents. These agents run on top of an infrastructure-less Vehicular Ad hoc Network (VANET). Simulation results are presented and discussed to support the proposed ideas.

  • 397.
    de Freitas, Edison Pignaton
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Embedded Systems (CERES).
    Heimfarth, Tales
    Computer Science Department, UFLA, Brazil.
    Ferreira, Armando Morado
    Military Institute of Engineering, Brazil.
    Pereira, Carlos Eduardo
    PPGC UFRGS, Brazil.
    Wagner, Flávio Rech
    PPGC UFRGS, Brazil.
    Larsson, Tony
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Embedded Systems (CERES).
    Decentralized task distribution among cooperative UAVs in surveillance systems applications2010In: 2010 Seventh International Conference on Wireless On-demand Network Systems and Services, New York: IEEE Press, 2010, p. 121-128Conference paper (Refereed)
    Abstract [en]

    Teams of small Unmanned Aerial Vehicles (UAVs) are being largely proposed to be used in different areas for both military and civilian applications. Their integration in wider sensor networks is also being considered in order to provide a better cost-benefit ration. However, coordination among UAV teams is not a trivial problem in an ad hoc network. This paper presents a decentralized coordination strategy to orient the actions of a team of UAVs, which take part in a wider sensor network, relying on ad hoc network communication. The proposed sensors network inclused static sensors that issue alarms indicating the presence of possible targets that must be handled by one of the UAVs and possibly relay messages among them. Preliminary results of the proposed approach are presented and are contrasted with results provided by a centralized solution for the problem.

  • 398.
    de Freitas, Edison Pignaton
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Embedded Systems (CERES).
    Heimfarth, Tales
    Institute of Informatics, UFRGS, Porto Alegre, Brazil.
    Ferreira, Armando Morado
    Defense Engineering Graduate Program, Military Institute of Engineering, Rio de Janeiro, Brazil.
    Wagner, Flávio Rech
    Institute of Informatics, UFRGS, Porto Alegre, Brazil.
    Pereira, Carlos Eduardo
    Institute of Informatics, UFRGS, Porto Alegre, Brazil.
    Larsson, Tony
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Embedded Systems (CERES).
    An agent framework to support sensor networks’ setup and adaptation2009In: International Multiconference on Computer Science and Information Technology, 2009. IMCSIT ’09, Piscataway, N.J.: IEEE Press, 2009, p. 619-626Conference paper (Refereed)
    Abstract [en]

    Sensor networks are being used in several emerging applications not even imagined some years ago due to advances in sensing, computing, and communication techniques. However, these advances also pose various challenges that must be faced. One important challenge is related to the autonomous capability needed to setup and adapt the networks, which decentralizes the control of the network, saving communication and energy resources. Middleware technology helps in addressing this kind of problem, but there is still a need for additional solutions, particularly considering dynamic changes in users' requirements and operation conditions. This paper presents an agent-based framework acting as an integral part of a middleware to support autonomous setup and adaptation of sensor networks. It adds interoperability among heterogeneous nodes in the network, by means of autonomous behavior and reasoning. These features also address the needs for system setup and adaptations in the network, reducing the communication overhead and decentralizing the decision making mechanism. Additionally, preliminary results are also presented.

  • 399.
    de Freitas, Edison Pignaton
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Embedded Systems (CERES).
    Heimfarth, Tales
    Computer Science Department, Federal University of Lavras, Lavras, Brazil.
    Netto, Ivayr Farah
    Computer Science Department, Federal University of Lavras, Lavras, Brazil.
    Cardoso de Sa, Alex Guimaraes
    Computer Science Department, Federal University of Lavras, Lavras, Brazil.
    Pereira, Carlos Eduardo
    Institute of Informatics, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
    Ferreira, Armando Morado
    Defense Engineering Graduate Program, Military Institute of Engineering, Rio de Janeiro, Brazil.
    Wagner, Flavio Rech
    Institute of Informatics, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
    Larsson, Tony
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Embedded Systems (CERES).
    Enhanced Wireless Sensor Network Setup Strategy Supported by Intelligent Software Agents2010In: Sensors 2010 Hawaii: IEEE Sensors 2010 Conference : November 1-4, 2010, Waikoloa, Big Island, Hawaii. / [ed] Institute of Electrical and Electronics Engineers, Piscataway, N.J.: IEEE Press, 2010, p. 813-816Conference paper (Refereed)
    Abstract [en]

    A well know problem in the Wireless Sensor Network (WSN) research area is the usage of appropriate strategies to setup the sensor nodes such that they may accomplish sensing missions. This problem refers to the selection of appropriate nodes to perform the different tasks required to the missions' accomplishment and may be thus characterized as an instance of the task and resource allocation problem. Traditional approaches consider pre-planned strategies, which are not flexible to deal with changes in the network and environment operating conditions. This paper presents an enhanced agent-oriented strategy, which consists of a usage of mobile intelligent agents to disseminate missions and nodes' information over the network, as well as stationary software agents installed in the sensor nodes to provide advanced reasoning apparatus for decision making purposes. The proposed enhancement complements the original agent-based approach with robustness features required to overcome extreme adverse conditions in which an ordinary WSN presents poor results. Results from simulations provide evidences of the efficiency of the complete enhanced approach.

  • 400.
    de Freitas, Edison Pignaton
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Embedded Systems (CERES).
    Heimfarth, Tales
    Computer Science Department, Federal University of Lavras, Lavras, Brazil.
    Netto, Ivayr Farah
    Computer Science Department, Federal University of Lavras, Lavras, Brazil.
    Lino, Carlos Eduardo
    Federal University of Lavras, Department of Computer Science, Lavras Brazil .
    Pereira, Carlos Eduardo
    Federal University of Rio Grande do Sul, Institute of Informatics, Porto Alegre Brazil .
    Ferreira, Armando Morado
    Instituto Militar de Engenharia, Defense Engineering Graduate Program, Rio de Janeiro Brazil .
    Wagner, Flávio Rech
    Federal University of Rio Grande do Sul, Institute of Informatics, Porto Alegre Brazil .
    Larsson, Tony
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Embedded Systems (CERES).
    UAV relay network to support WSN connectivity2010In: 2010 International Congress on Ultra Modern Telecommunications and Control Systems and Workshops: ICUMT : Moscow, 18-20 Oct. 2010 / [ed] IEEE, Piscataway, N.J.: IEEE Press, 2010, p. 309-314Conference paper (Refereed)
    Abstract [en]

    An important problem in Wireless Sensor Networks (WSN) is the occurrence of failures that lead to the disconnection of parts of the network, compromising the final results achieved by the WSN operation. A way to overcome such problem is to provide a reliable connection to support the connectivity via other types of nodes that communicate with the sensor nodes. This paper proposes the usage of a network composed by Unmanned Aerial Vehicles (UAVs) as a relay network to guarantee the delivery of data produced by WSN nodes on the ground to the users. Results from simulations of the proposed technique are provided and discussed.

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