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  • 1651.
    Åkesson, Maria
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Digital Innovation in the Value Networks of Newspapers2009Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    After decades of digital developments, we are now entering a truly digital era. Digital information and communication technology has become a naturally embedded part ofthe designed environment we live in. Most parts of life are today pervaded by digital products and services. Evidence of such immersion can be noted in, for instance, media consumption. This development is gradually shaping and cultivating a media environment that is ubiquitous. Such ubiquity is manifested in media’s constant presence and thechanges in media consumption in the purview of digital innovation. Indeed, digital innovation is not only a shift in technology. It alters existing value networks and calls forrethinking existing value perceptions. While this disruptive change driven by digitizationcan be found in many industries, this thesis focuses on its impact on value networks in thenewspaper industry.The digitization of newspapers started with the introduction of the internet in the 90´sand soon emerged into new media innovations. While these new media innovations have not replaced existing media, they have been disruptive to newspaper value networks. Recently, the emergence of yet another digital innovation is specifically interesting whenstudying changes to value networks of the newspaper industry: the e-paper. This innovation (a screen technology very close to print on paper) exhibits inherent valuesthat make future replacement of print on paper a possibility. It is therefore regarded as avery promising technology in the newspaper industry. This thesis can be positioned at the intersection of the friction between forces to embarkon a new media trajectory and forces to hang on to the established structures andcontrol. The research question addressed in this thesis is: How are value networks of newspapers influenced by digital innovation? Addressing the research question, a multimethod approach was adopted to gain a broad understanding of how digital innovationinfluences value networks of newspapers. Drawing on digital innovation literature, the thesis presents a theoretical perspective with which to understand how digital innovation influences value networks. This perspective is instantiated as a model of value network configuration. The model emphasizes the multi-layered, dynamic, dialectic, and diametrical character of value networks in digital innovation. The model is offered as abasis and analytical tool to further explore value networks in digital innovation. This tool is useful for newspaper stakeholders when entering the digital era.

  • 1652.
    Åkesson, Maria
    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).
    Mobile service value: presenting the newspaper publisher view on how to attract users and advertisers2006In: Proceedings of the 29th IRIS, 2006, p. 19-Conference paper (Refereed)
    Abstract [en]

    This paper presents results from a study of news publisher’s perceptions of reader and advertiser value of mobile services. Literature on mobile service features and benefits has been used to discuss these values. The study was conducted in 10 European newspaper publishing organizations. The data on the value perceptions was analyzed iteratively to discover patterns of attributes, and resulted in a set of values for readers respectively advertisers. These finding suggest a re-shaped service model for newspaper publishers. The perception of reader values are availability, experience, relevance, sociability, and credibility, and of advertiser value mass coverage, targeting, tracking and mediating. This set of value attributes can be of guidance for content-providing organizations attempting to practice a value-centered approach to mobile service design.

  • 1653.
    Åkesson, Maria
    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).
    Value proposition in m-commerce: exploring service provider and user perceptions2007In: Proceedings of 6th Annual Global Mobility Roundtable, 2007, p. 19-Conference paper (Refereed)
    Abstract [en]

    Adoption of mobile services and m-business outcomes has not yet reached expectations. The uncertainties in m-commerce are still many occasioning a need to explore challenges and opportunities. This study provides empirical data on perceptions of value proposition in m-commerce from the supplier as well as the demand side. The first is addressed in an interview study with newspaper publishers that offer mobile services, and the second in a broad survey of 1388 mobile service users. The findings show that there are similarities as well as differences in perceptions of value held by service providers and users of mobile services. Ubiquity and service provider/user relationship were identified as general service characteristics whereas localization, personalization, convenience and socialization were identified to be mobile service value dimensions. The aim is to provide useful insights for service providers to better meet the market demands in consumer m-commerce.

  • 1654.
    Åkesson, Maria
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Ihlström, Carina
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Mobile service value – presenting the newspaper publisher view on how to attract readers and advertizers2006In: Proceedings, TAGA 2006, 58th Annual Technical Conference, Vancouver, Canada, 2006Conference paper (Refereed)
    Abstract [en]

    As most of today’s media houses publish in multiple channels, they also exist in a multitude of infrastructures. Given the ongoing diffusion of personal computers, handheld devices, and mobile telephones as well as the advent of new technologies such as the e-paper, a new type of ubiquitous information environment is emerging. In this paper we give an update on the development of e-paper technology and provide a literature review of infrastructure issues in ubiquitous information environments. From empirical results from 19 interviews and 9 workshops with newspaper managers and designers in Sweden, Belgium, France and the Netherlands, we address the following research question: What infrastructure considerations arise with the introduction of a new channel in a ubiquitous media environment?

  • 1655.
    Åkesson, Maria
    et al.
    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).
    Ihlström, Carina
    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).
    Towards a Ubiquitous Media Environment: Adding the e-newspaper Channel2006In: Proceedings of the Technical Association of the Graphic Arts, TAGA, Sewickley, USA: Technical Association of the Graphic Arts , 2006, p. 1-23Conference paper (Refereed)
    Abstract [en]

    As most of today’s media houses publish in multiple channels, theyalso exist in a multitude of infrastructures. Given the ongoing diffusion ofpersonal computers, handheld devices, and mobile telephones as well as theadvent of new technologies such as the e-paper, a new type of ubiquitousinformation environment is emerging. In this paper we give an update on thedevelopment of e-paper technology and provide a literature review ofinfrastructure issues in ubiquitous information environments. From empiricalresults from 19 interviews and 9 workshops with newspaper managers anddesigners in Sweden, Belgium, France and the Netherlands, we address thefollowing research question: What infrastructure considerations arise with theintroduction of a new channel in a ubiquitous media environment?

  • 1656.
    Åkesson, Maria
    et al.
    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).
    Ihlström Eriksson, Carina
    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).
    Advertising Challenges in Ubiquitous Media Environments2010In: Handbook of Research on Mobile Marketing Management / [ed] Key Pousttchi, Dietmar G Wiedemann, Hershey, PA: Business Science Reference , 2010, p. 77-93Chapter in book (Other academic)
    Abstract [en]

    Mobile advertising opportunities have attracted interest from industry and academics as a response to the trend of diffusion of new mobile technology. One industry particularly interested in new advertising opportunities is the newspaper industry. Many media houses envision a future multi-channel media environment supporting device independent, anytime, anywhere publishing, i.e. a Ubiquitous Media Environment (UME). In this paper we explore how ubiquitous advertising challenges the role of media houses. Ubiquitous advertising refers to advertising in a UME, anytime, anywhere and in any device. Based on results from interviews and workshops with advertisers and publishers we discuss how media houses traditional role is challenged. We contribute with an understanding of how media houses can develop their role to succeed with ubiquitous advertising and to m-advertising literature with insights into the dynamics of balancing consumer and advertiser value of ubiquitous advertising.

  • 1657.
    Åkesson, Maria
    et al.
    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).
    Ihlström Eriksson, Carina
    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).
    Designing and evaluating the calm electronic newspaper2006In: Proceedings of the 14th European Conference on Information Systems, ECIS 2006 / [ed] Jan Ljungberg, Göteborg: IT-universitetet, Göteborgs universitet , 2006, p. 12-Conference paper (Refereed)
    Abstract [en]

    This paper reports from an ongoing action research study concerning the design of the future e-newspaper, i.e. a newspaper on e-paper technology. The e-paper innovation is of great importance to the newspaper publishers since it has the potential of eventually replacing the printed newspaper due to its readability and high contrast. This study addresses the challenge of how to design calm user experience of the e-newspaper. The action research approach followed the canonical action research method, in collaboration with publisher, reader and advertiser clients. The activities include a range of data collection techniques such as project meetings, workshops, interviews and prototype testing. In the diagnosing phase we identified the core challenges for designing the e-newspaper which directed us to the literature of calm technology. Three design principles for calm user experience were formulated in the action planning phase, followed by designing three e-newspaper prototypes, which embeds the design principles, in the action taking phase. The prototypes were evaluated with 36 readers in the evaluating phase and the outcome of these evaluations was later assessed in collaboration with newspaper designers for specifying learning. The results indicate that the design principles support calm user experience.

  • 1658.
    Åkesson, Maria
    et al.
    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).
    Ihlström Eriksson, Carina
    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).
    From Multi Channel Publishing towards a Ubiquitous Media Environment2008In: Journal of Graphic Technology, ISSN 1544-9599, E-ISSN 1544-9602, Vol. 4, no 3, p. 126-148Article in journal (Refereed)
    Abstract [en]

    As most of today’s media houses publish in multiple channels, they also exist in a multitude of infrastructures. Given the ongoing diffusion of personal computers, handheld devices, and mobile telephones as well as the advent of new technologies such as the epaper, a new type of ubiquitous media environment is emerging. Drawing on this background we address the research question what are the challenges when aligning a new promising technology (such as the e-paper) with existing value networks enabling value creation in ubiquitous media environments? In this paper we report from a study with newspaper publishers in Sweden, Belgium, France and the Netherlands consisting of 18 interviews and 9 workshops. The findings show that value networks in a multiple channel publishing environment are closely related to infrastructure environment. The nature of ubiquitous media environment will have implications on value networks openness and flexibility. Value networks will need a fluid structure to cope with changes in very short cycles.

  • 1659.
    Åkesson, Maria
    et al.
    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).
    Ihlström Eriksson, Carina
    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).
    Mobile Service Adoption: the Swedish Case Between 2006 and 20082008Conference paper (Refereed)
    Abstract [en]

    This paper describes the development of mobile service adoption between 2006 and 2008 using the Global Acceptance of Technology model (GAT) for categorization. Two online surveys were conducted, one in 2006 and one in 2008. The online questionnaires were presented at the web sites at two Swedish newspapers with comparable circulation. The sample from 2006 includes 131 respondents and the 2008 sample include 152 respondents. The samples have comparable distribution of gender, age and mobile phone penetration. The findings show a positive development in mobile service adoption in Sweden from 2006 to 2008, e.g. a large portion of the users have upgraded their mobile phones to 3G, the cost is nolonger an important barrier for adoption and users seem to be more acquainted with using mobile services and therefore do not regard mobile services to be as complicated. However, the value of mobile services was generally rated lower in 2008 than in 2006, suggesting a new challenge for the mobile service producers.

  • 1660.
    Åkesson, Maria
    et al.
    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).
    Ihlström Eriksson, Carina
    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).
    The vision of ubiquitous media services: How close are we?2007In: Human interface and the management of information: Symposium on Human Interface 2007, held as part of HCI International 2007, Beijing, China, July 22 - 27, 2007 : proceedings. P. 2, Interacting in information environments / [ed] Michael J. Smith, Gavriel Salvendy, Berlin / Heidelberg: Springer Berlin/Heidelberg, 2007, p. 222-232Conference paper (Refereed)
    Abstract [en]

    The high penetration of mobile devices implies that we are closing up to the vision of ubiquitous media environments. This paper reports from a broad survey about barriers, use patterns, and motivations for using mobile media services. The aim is to contribute to the understanding of mobile service adoption process by studying users in different phases of the adoption process. The findings imply that mobile services are still not adopted and ubiquitously ingrained in use patterns. There is still a long way to go.

  • 1661.
    Åkesson, Maria
    et al.
    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).
    Kautz, Karl-Heinz
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Ihlström Eriksson, Carina
    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).
    Engaged Design Science: Developing Design Visions for the future e-Newspaper2010In: ICIS 2010 Proceedings - Thirty First International Conference on Information Systems, Atlanta: Association for Information Systems, 2010Conference paper (Refereed)
    Abstract [en]

    This paper reports the development of design visions for the future electronic (e-) newspaper. The ambition is to bring together the features of printed newspapers with the possibilities of online media. In an engaged design science research project we together with representatives of the newspaper industry and newspaper readers identified the three design challenges genre awareness, stress and lack of control, and obstruction. We also developed the guiding design metaphor of a calm e-reading experience and three design principles provision of media recognition support, support for user control, and support for focus on content. The design principles were evaluated through e-newspaper prototypes and on this basis we revised the design principles which led to a design theory for e-reading solutions on and for digital media.

  • 1662.
    Åkesson, Maria
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Sörensen, Carsten
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Ihlström Eriksson, Carina
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Ambidexterity under digitalization: A tale of two decades of new media at a Swedish newspaper2018In: Scandinavian Journal of Management, ISSN 0956-5221, E-ISSN 1873-3387, Vol. 34, no 3, p. 276-288Article in journal (Refereed)
    Abstract [en]

    The digitalization of the newspaper industry represents a significant challenge for incumbent companies to engage new technologies. Many companies in the industry have had to seek new markets through digital technologies to survive. This paper explores how one of the largest Swedish newspapers, Aftonbladet, has strategically embraced new media and new markets. We report a decade of engaged scholarship based on interviews and archival analysis that covers 20 years of strategic acts at the company. We consider this effort as a case of organizational ambidexterity under digitalization. The analysis seeks to extend theoretical understanding of the interrelationships between strategic intent and technological choice. The paper contributes to the understanding of ambidexterity under digitalization by theoretically framing it in terms of strategic acts. The research suggests that digitalization implies a more complex ambidexterity interrelationship between old and new markets and technologies. As digitalization enables the loosening of previously tight couplings, the clear theoretical distinction between old and new, and critically, the unproblematic transition, is brought into question. The paper suggests replacing the notion of an orderly shift from the old to the new with ambidexterity under digitalization as a duality of both old and new undergoing continual reconfiguration. © 2018 Elsevier Ltd

  • 1663.
    Åkesson, Maria
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Thomsen, Michel
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    A blended model for student-centered supervision of thesis work in higher education2016In: ICERI2016 Proceedings, Valencia: IATED , 2016, p. 906-914Conference paper (Refereed)
    Abstract [en]

    Thesis work is challenging to both students and supervisors. The traditional model of supervision is that one supervisor individually supervises thesis work. In higher education this model has been challenged with new approaches such as blended group supervision to make the process more interactive and to provide support for students to complete the thesis work on time. In this paper we report from an effort to design a model for blended group supervision with the aim to provide structure and support for students as well as supervisors. The model is discussed in relation to the theoretical concepts zone of proximal development and scaffolding. 

  • 1664.
    Åkesson, Maria
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Thomsen, Michel
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Challenges to Newspapers in Digital Platform Ecosystems2015In: MCIS 2015 Proceedings, Mediterranean Conference on Information Systems (MCIS) , 2015, p. Paper 14-Conference paper (Refereed)
    Abstract [en]

    Incumbent content providers such as newspapers experience radical changes in their business environment. Digital platforms are becoming increasingly important to innovate digital media services and business. The generativity of digital platforms afforded by digital technology offers new opportunities, but also new challenges. Digital platforms exist in an ecosystem of complex networks of actorsand resources. In this paper we shed light on the challenges for incumbent content providers to adapt to and realize business opportunities in digital platforms. We do this from the viewpoints of newspaper management, platform provider and analysts of media business.

  • 1665.
    Åkesson, Maria
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Thomsen, Michel
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Designing an educational curriculum for the digital future: an international master in "Digital Service Innovation”2018In: EDULEARN18 Proceedings / [ed] L. Gómez Chova, A. López Martínez & I. Candel Torres, IATED , 2018, p. 6317-6323Conference paper (Refereed)
    Abstract [en]

    This paper presents the design of an international master’s curriculum in Digital Service Innovation. Digitalization and the rapid development in information technology (IT) are fundamentally reshaping society. This development brings with it an increasing need for mastery of digital service innovation. The international master's program Digital Service Innovation addresses this need by studying digitalization, digital resources for value creation, and educating students in how to design innovative digital services. Digital Service Innovation is a two-year master’s program focused on sustainable value creation. Year one focuses on the concept of innovation and design driven problems solving. Year two focuses on conceptualization, design of digital services. The final degree project gives students the opportunity to apply theoretical knowledge in a design study, interacting with companies and public authorities. This is expected to improve the students' ability to understand how digital service innovation is connected to business requirements, and identify new digital services or applications. All to prepare students for working professionally in the field of digital service innovation.

  • 1666.
    Åkesson, Maria
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Thomsen, Michel
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Digital Innovation and Social Dilemmas2014In: Creating Values For All Through IT: IFIP WG 8.6 International Conference on Transfer and Diffusion of IT, TDIT 2014, Aalborg, Denmark, June 2-4, 2014. Proceedings / [ed] Bergvall-Kåreborn, Birgitta & Nielsen, Peter Axel, Heidelberg; New York; Dordrecht; London: Springer Berlin/Heidelberg, 2014, p. 49-61Conference paper (Refereed)
    Abstract [en]

    Digital innovation is rapidly reshaping society, affecting fundamental aspects of our everyday activities and lives. This development is accompanied with benefits as well as social dilemmas. In this paper we approach this class of challenges in IS digital innovation research. We investigate how social challenges are attended in research agendas, and reflect upon social challenges emerging from a digital service innovation project. Based on the empirical case, we present a scenario that illustrates how social challenges can unfold in digital service innovation. The case exemplifies three conflicts of interest that are used to discuss implications for the research agendas for digital innovation. We propose that explicit attention is paid to social and ethical challenges, taking a large scale and interdisciplinary approach on social and ethical challenges in digital ecosystems.

  • 1667.
    Åkesson, Maria
    et al.
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Thomsen, Michel
    Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), Man and Information technology laboratory (MI-lab).
    Work-Integrated Learning: Visualizing Research as Professional Practice2018In: ICERI2018 Proceedings, The International Academy of Technology, Education and Development, 2018, p. 9608-9612Conference paper (Refereed)
    Abstract [en]

    In higher education work place practice through work placement or internships can be integrated as part of the education, especially when educating for professions such as teachers, medical professionals or law practitioners. The overall purpose of integrating work placement in the higher education is for students to experience and learn through engaging in practice with those already educated and experienced within the respective work domain. However, on masters level in higher education we seldom allow students the same opportunity related to the researcher profession. Students are commonly invited to do project or thesis work in research projects or relating to research work. Less common is to actually invite students to participate in research professional practice as a work placement. With work placement we here refer to the student being engaged during a period of time, in full working days, together with research professionals in their everyday practice. Learning to become a researcher through work experience has been described in a case study of a Ph.D. student by e.g. Eames (2003). The study showed that work placement can provide significant learning opportunities. The learning through research everyday work was different form being educated about research, and provided a view of what it means to practice in a research profession. We propose that the same opportunity for learning can be provided in masters education.

    In this paper we report from an initiative of integrating research work practice in an informatics master program. At Halmstad University we are starting a new international master program in Digital Service Innovation (starting September 2018). The master program educates students to design sustainable digital services through design research. With the aim to inspire students for future careers as researchers we offer the students the opportunity for 8 full weeks of “Research Placement” to visualize research as professional practice. The purpose is to provide hands-on experience of research to develop their awareness, skills and abilities to practice as design researchers. It also provides the opportunity to engage with research professionals and the stakeholders involved in the research. Moreover, the students are provided the opportunity to discuss their own career paths and the social and ethical implications of their work for society. The “Research Placement” can be in an academic institution, a research institute or a research and development department in an organization. The student examination assignment is a self-study and reflection of their “Research Placement” (see e.g. LaBoskey, 2004; Schön, 1983).

    References:

    1. Eames, C. (2003). Learning to Work: Becoming a Research Scientist Through Work Experience Placements. Education, 4(2), 7-15.
    2. LaBoskey, V. K (2004). The Methodology of Self-Study and Its Theoretical Underpinnings. In International Handbook of Self-Study of Teaching and Teacher Education Practices, Eds Loughran, J. J., Hamilton, M. L., LaBoskey, V. K. and Russell, T., Springer.
    3. Schön, D. A. (1983). The reflective practitioner: how professionals think in action. Basic Books.
  • 1668.
    Åstrand, Björn
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Vision Based Perception for Mechatronic Weed Control2005Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    The use of computer-based signal processing and sensor technology to guide and control different types of agricultural field implements increases the performance of traditional implements and even makes it possible to create new ones. This thesis increases the knowledge on vision-based perception for mechatronic weed control. The contributions are of four different kinds:

    First, a vision-based system for row guidance of agricultural field machinery has been proposed. The system uses a novel method, based on the Hough transform, for row recognition of crop rows.

    Second is a proposal for a vision-based perception system to discriminate between crops and weeds, using images from real situations in the field. Most crops are cultivated in rows and sown in a defined pattern, i.e. with a constant inter-plant distance. The proposed method introduces the concept of using these geometrical properties of the scene (context) for single plant recognition and localization. A mathematical model of a crop row has been derived that models the probability for the positions of consecutive crops in a row. Based on this mathematical model two novel methods for context-based classification between crops and weeds have been developed. Furthermore, a novel method that combines geometrical features of the scene (context) and individual plant features has been proposed. The method has been evaluated in two datasets of images of sugar beet rows. The classification rate was 92 % and 98 %, respectively.

    The third contribution is the design of a mobile agricultural robot equipped with these perception systems and a mechanical weeding tool intended for intra-row weed control in ecologically cultivated crops.

    The fourth contribution is a demonstration of the feasibility of the perception systems in real field environments, especially with respect to robustness and real-time performance. The row guidance system has been implemented in three different row cultivators and performed inter-row weed control at two commercial farms. The robot has proven to be able to follow a row structure by itself, while performing weed control within the seed line of a crop row, i.e. intra-row cultivation. 

  • 1669.
    Åstrand, Björn
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Baerveldt, Albert-Jan
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    A mobile robot for mechanical weed control2003In: International Sugar Journal, ISSN 0020-8841, Vol. 105, no 1250, p. 89-95Article in journal (Refereed)
    Abstract [en]

    This paper presents an autonomous agricultural mobile robot for mechanical weed control in outdoor environments. The robot employs two vision systems: one grey-level vision system that is able to recognise the row structure formed by the crops and to guide the robot along the rows and a second, colour-based vision system that is able to identify a single crop among weed plants. This vision system controls a weeding-tool that removes the weed within the row of crops. It has been shown that colour vision is feasible for single plant identification, i.e. discriminating between crops and weeds. The system as a whole has been verified, showing that the subsystems are able to work together effectively. A first trial in a greenhouse showed that the robot is able to manage weed control within a row of sugar beet plants.

  • 1670.
    Åstrand, Björn
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Baerveldt, Albert-Jan
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    A vision based row-following system for agricultural field machinery2005In: Mechatronics (Oxford), ISSN 0957-4158, E-ISSN 1873-4006, Vol. 15, no 2, p. 251-269Article in journal (Refereed)
    Abstract [en]

    In the future, mobile robots will most probably navigate through the fields autonomously to perform different kind of agricultural operations. As most crops are cultivated in rows, an important step towards this long-term goal is the development of a row-recognition system, which will allow a robot to accurately follow a row of plants. In this paper we describe a new method for robust recognition of plant rows based on the Hough transform. Our method adapts to the size of plants, is able to fuse information coming from two rows or more and is very robust against the presence of many weeds. The accuracy of the position estimation relative to the row proved to be good with a standard deviation between 0.6 and 1.2 cm depending on the plant size. The system has been tested on both an inter-row cultivator and a mobile robot. Extensive field tests have showed that the system is sufficiently accurate and fast to control the cultivator and the mobile robot in a closed-loop fashion with a standard deviation of the position of 2.7 and 2.3 cm, respectively. The vision system is also able to detect exceptional situations by itself, for example the occurrence of the end of a row.

  • 1671.
    Åstrand, Björn
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Baerveldt, Albert-Jan
    Halmstad University.
    An agricultural mobile robot with vision-based perception for mechanical weed control2002In: Autonomous Robots, ISSN 0929-5593, E-ISSN 1573-7527, Vol. 13, no 1, p. 21-35Article in journal (Refereed)
    Abstract [en]

    This paper presents an autonomous agricultural mobile robot for mechanical weed control in outdoor environments. The robot employs two vision systems: one gray-level vision system that is able to recognize the row structure formed by the crops and to guide the robot along the rows and a second, color-based vision system that is able to identify a single crop among weed plants. This vision system controls a weeding-tool that removes the weed within the row of crops. The row-recognition system is based on a novel algorithm and has been tested extensively in outdoor field tests and proven to be able to guide the robot with an accuracy of 2 cm. It has been shown that color vision is feasible for single plant identification, i.e., discriminating between crops and weeds. The system as a whole has been verified, showing that the subsystems are able to work together effectively. A first trial in a greenhouse showed that the robot is able to manage weed control within a row of crops.

  • 1672.
    Åstrand, Björn
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Bouguerra, Abdelbaki
    Learning Systems Lab (AASS), Dept. of Technology, Örebro University, Sweden.
    Andreasson, Henrik
    Learning Systems Lab (AASS), Dept. of Technology, Örebro University, Sweden.
    Lilienthal, Achim J.
    Learning Systems Lab (AASS), Dept. of Technology, Örebro University, Sweden.
    Rögnvaldsson, Thorsteinn
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    An autonomous robotic system for load transportation2009In: Program and Abstracts, Fourth Swedish Workshop on Autonomous Robotics, SWAR'09 / [ed] Lars Asplund, Västerås: Mälardalen University , 2009, p. 56-57Conference paper (Other academic)
  • 1673.
    Åstrand, Björn
    et al.
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Johansson, Maria
    Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Segmentation of partially occluded plant leaves2006In: IWSSIP 200613th International Conference on Systems, Signals and Image ProcessingSeptember 21-23, 2006, Budapest, Hungary / [ed] Balázs Enyedi, András Reichardt, Stockholm: Harlequin , 2006Conference paper (Refereed)
    Abstract [en]

    N/A

31323334 1651 - 1673 of 1673
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