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  • 401.
    Cheng, Nadia
    et al.
    MIT, USA.
    Ishigami, Genya
    MIT, USA.
    Hawthorne, Stephan
    MIT, USA.
    Chen, Hao
    University of California, USA.
    Hansen, Malik
    Boston Dynamics, USA.
    Telleria, Maria
    MIT, USA.
    Playter, Robert
    Boston Dynamics, USA.
    Iagnemma, Karl
    MIT, USA.
    Design and Analysis of a Soft Mobile Robot Composed of Multiple Thermally Activated Joints Driven by a Single Actuator2010Ingår i: 2010 IEEE international conference on robotics and automation, Piscataway, N.J.: IEEE Press, 2010, s. 5207-5212Konferensbidrag (Refereegranskat)
    Abstract [en]

    Soft robotic systems have applications in industrial, medical, and security applications. Many applications require these robots to be small and lightweight. One challenge in developing a soft robotic system is to drive multiple degrees-of-freedom (DOF) with few actuators, thereby reducing system size and weight. This paper presents the analysis and design of an inchworm-like mobile robot that consists of multiple, independent thermally activated joints but is driven by a single actuator. To realize control of this under-actuated system, a solder-based locking mechanism has been developed to selectively activate individual joints without requiring additional actuators. The design and performance analysis of a prototype mobile robot that is capable of inchworm-like translational and steering motion is described. The design of novel "feet" with anisotropic friction properties is also described. ©2010 IEEE.

  • 402.
    Chhaniyara, Sagar Rameshkumar
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Real-time Web-shell Detection Using Machine Learning2020Självständigt arbete på avancerad nivå (magisterexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    The internet has grown a lot since its invention. As the internet grows, so does the security issues. The attackers have found several ways to break into the website, and among them, using web-shell is one of the best ways. The traditional methods can detect the web-shell based upon the signature or monitoring the traffic over the network to detect abnormal behaviors to identify the web-shell. These methods can provide good results in the case of known web-shells. However, to identify new web-shell, these methods are proven ineffective. There have been several techniques proposed using various neural network algorithms to detect web-shells in the past. The research in this thesis is to identify the most suitable neural network algorithm among ANN, CNN and LSTM in terms of accuracy, f1-score and time taken and based upon it to propose a real-time web-shell detection method using that algorithm and identify how feasible and appropriate it is and how it can be implemented practically.

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  • 403.
    Chrast, Lukas
    et al.
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE).
    Knaperek, Jozef
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE).
    Kovalcik, Marek
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE).
    BANDWIDTH AGGREGATION OF MOBILE BROADBAND LINKS ON RASPBERRY PI BASED ACCESS POINT2014Självständigt arbete på avancerad nivå (magisterexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    This thesis is concerned with the usability of Raspberry Pi as the access point in the mobilebroadband network environment. The first part of the thesis is dedicated to Raspberry Pi itself;hardware required to set up WLAN and WAN; and to the analysis of suitable solutions forbandwidth aggregation, particularly the load balancing of mobile broadband connections andtheir aggregation into one logical link. The second part deals with the implementation of thesesolutions and subsequently with their testing and verification. The evaluation of results gives aninteresting outcome. Load balancing has proven to be resilient and feasible solution forbandwidth aggregation in the mobile broadband network environment where the speed, packetloss and jitter are of main concern. The second scenario, where the connections are bundled intoone logical link, has turned out to give variable results. Its performance is susceptible to thechanges in the mobile broadband network as the packets across the links in the bundle alternatein the round-robin fashion.

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    BW_Aggregation_on_RPI_AP
  • 404.
    Chronwall, Anton
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Haapala, Jacob
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Brolle ny på jobbet: En studie om RPAs påverkan på digital arbetsmiljö2019Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Den ökade datakraften och digitaliseringen av arbete har bidragit till möjligheten att automatisera processer. En metod för att automatisera processer är med Robotic Process Automation (RPA), vilket utför regelstyrda uppgifter baserat på detaljerade processbeskrivningar. Användningen av RPA blir allt vanligare inom den offentliga sektorn. Ett exempel på detta är Trafikverket som infört RPA för att automatisera processer med målet att frigöra tid för medarbetare. Denna studie har undersökt vad Trafikverkets införande och användning av RPA har inneburit för den digitala arbetsmiljön. Studien har undersökt detta genom att genomföra intervjuer med medarbetare som påverkats till följd av införandet och användning av RPA eller varit delaktig i införandet av RPA-lösningen.

    Studiens bidrag skapar en ökad förståelse för vad införandet och användandet av RPA har för konsekvenser på digital arbetsmiljö i organisationer i den offentliga sektorn genom att presentera tre konsekvenser. Studien visar att användningen av RPA kan resultera i en initial oro och en upplevd minskad anställningstrygghet bland medarbetarnas. Nya arbetsuppgifter kan uppstå till följd av införandet av RPA, dessa kan upplevas som monotona och irritationsmoment av medarbetarna. Slutligen kan det innebära att medarbetare får mer tid till varierande och kvalificerade arbetsuppgifter med möjlighet till kompetensutveckling. Detta resulterar i att medarbetarna uttrycker en ökad förändringsbenägenhet gentemot fortsatt automatisering med RPA.

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  • 405.
    Cinkler, Tibor
    et al.
    Budapest University of Technology and Economics, Budapest, Hungary.
    Koucheryavy, Yevgeni
    Department of Communications Engineering, Tampere University of Technology, Tampere, Finland.
    Nagy, Peter
    Scientific Association for Infocommunications, Budapest, Hungary.
    Rak, Jacek
    Gdansk University of Technology, Gdansk, Poland.
    Vinel, Alexey
    Saint-Petersburg Institute for Informatics and Automation, Russian Academy of Sciences, St. Petersburg, Russia.
    ICUMT 2011 Congress in Budapest, Hungary2012Ingår i: IEEE Global Communications Newsletter, ISSN 0163-6804, nr April, s. 3-3Artikel i tidskrift (Övrig (populärvetenskap, debatt, mm))
  • 406.
    Claesson, Göran
    et al.
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE).
    Silverborn, Jonas
    Multifunktionell CNC-maskin2014Självständigt arbete på grundnivå (högskoleexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
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    Multifuntionell CNC-maskin
  • 407.
    Cooney, Martin
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Robot Art, in the Eye of the Beholder?: Personalized Metaphors Facilitate Communication of Emotions and Creativity2021Ingår i: Frontiers in Robotics and AI, E-ISSN 2296-9144, Vol. 8, artikel-id 668986Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Socially assistive robots are being designed to support people's well-being in contexts such as art therapy where human therapists are scarce, by making art together with people in an appropriate way. A challenge is that various complex and idiosyncratic concepts relating to art, like emotions and creativity, are not yet well understood. Guided by the principles of speculative design, the current article describes the use of a collaborative prototyping approach involving artists and engineers to explore this design space, especially in regard to general and personalized art-making strategies. This led to identifying a goal: to generate representational or abstract art that connects emotionally with people's art and shows creativity. For this, an approach involving personalized "visual metaphors" was proposed, which balances the degree to which a robot's art is influenced by interacting persons. The results of a small user study via a survey provided further insight into people's perceptions: the general design was perceived as intended and appealed; as well, personalization via representational symbols appeared to lead to easier and clearer communication of emotions than via abstract symbols. In closing, the article describes a simplified demo, and discusses future challenges. Thus, the contribution of the current work lies in suggesting how a robot can seek to interact with people in an emotional and creative way through personalized art; thereby, the aim is to stimulate ideation in this promising area and facilitate acceptance of such robots in everyday human environments. © 2021 Cooney. 

  • 408.
    Cooney, Martin
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Bigun, Josef
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    PastVision: Exploring “Seeing” into the Near Past with Thermal Touch Sensing and Object Detection – For Robot Monitoring of Medicine Intake by Dementia Patients2017Konferensbidrag (Refereegranskat)
    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.

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  • 409.
    Cooney, Martin
    et al.
    Advanced Telecommunications Research Institute International IRC/HIL, Keihanna Science City, Kyoto, Japan.
    Kanda, Takayuki
    Advanced Telecommunications Research Institute International IRC/HIL, Keihanna Science City, Kyoto, Japan.
    Alissandrakis, Aris
    Center for Learning and Knowledge Technologies Organization, Linnaeus University, Växjö, Sweden.
    Ishiguro, Hiroshi
    Advanced Telecommunications Research Institute International IRC/HIL, Keihanna Science City, Kyoto, Japan.
    Designing Enjoyable Motion-Based Play Interactions with a Small Humanoid Robot2014Ingår i: International Journal of Social Robotics, ISSN 1875-4791, E-ISSN 1875-4805, Vol. 6, nr 2, s. 173-193Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Robots designed to co-exist with humans in domestic and public environments should be capable of interacting with people in an enjoyable fashion in order to be socially accepted. In this research, we seek to set up a small humanoid robot with the capability to provide enjoyment to people who pick up the robot and play with it by hugging, shaking and moving the robot in various ways. Inertial sensors inside a robot can capture how the robot’s body is moved when people perform such “full-body gestures”. Unclear is how a robot can recognize what people do during play, and how such knowledge can be used to provide enjoyment. People’s behavior is complex, and naïve designs for a robot’s behavior based only on intuitive knowledge from previous designs may lead to failed interactions. To solve these problems, we model people’s behavior using typical full-body gestures observed in free interaction trials, and devise an interaction design based on avoiding typical failures observed in play sessions with a naïve version of our robot. The interaction design is completed by investigating how a robot can provide “reward” and itself suggest ways to play during an interaction. We then verify experimentally that our design can be used to provide enjoyment during a playful interaction. By describing the process of how a smallhumanoid robot can be designed to provide enjoyment, we seek to move one step closer to realizing companion robots which can be successfully integrated into human society. © 2013 Springer Science+Business Media Dordrecht.

  • 410.
    Cooney, Martin
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Menezes, Maria Luiza Recena
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Design for an Art Therapy Robot: An Explorative Review of the Theoretical Foundations for Engaging in Emotional and Creative Painting with a Robot2018Ingår i: Multimodal Technologies Interact. Special Issue Emotions in Robots: Embodied Interaction in Social and Non-Social Environments, ISSN 2414-4088, Vol. 2, nr 3, artikel-id 52Artikel i tidskrift (Refereegranskat)
    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.

  • 411.
    Cooney, Martin
    et al.
    Hiroshi Ishiguro Lab (HIL), Advanced Telecommunications Research Institute International (ATR), Seika, Japan.
    Nishio, Shuichi
    Hiroshi Ishiguro Lab (HIL), Advanced Telecommunications Research Institute International (ATR), Seika, Japan.
    Ishiguro, Hiroshi
    Hiroshi Ishiguro Lab (HIL), Advanced Telecommunications Research Institute International (ATR), Seika, Japan.
    Affectionate Interaction with a Small Humanoid Robot Capable of Recognizing Social Touch Behavior2014Ingår i: ACM Transactions on Interactive Intelligent Systems, ISSN 2160-6455, E-ISSN 2160-6463, Vol. 4, nr 4, artikel-id 19Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Activity recognition, involving a capability to recognize people’s behavior and its underlying significance, will play a crucial role in facilitating the integration of interactive robotic artifacts into everyday human environments. In particular, social intelligence in recognizing affectionate behavior will offer value by allowing companion robots to bond meaningfully with interacting persons. The current article addresses the issue of designing an affectionate haptic interaction between a person and a companion robot by exploring how a small humanoid robot can behave to elicit affection while recognizing touches. We report on an experiment conducted to gain insight into how people perceive three fundamental interactive strategies in which a robot is either always highly affectionate, appropriately affectionate, or superficially unaffectionate (emphasizing positivity, contingency, and challenge, respectively). Results provide insight into the structure of affectionate interaction between humans and humanoid robots—underlining the importance of an interaction design expressing sincere liking, stability and variation—and suggest the usefulness of novel modalities such as warmth and cold. © 2014 ACM.

  • 412.
    Cooney, Martin
    et al.
    Advanced Telecommunications Research Institute International (ATR) Hiroshi Ishiguro Lab (HIL), 2-2-2 Hikaridai, Keihanna Science City, Kyoto 619-0288, Japan & Department of Systems Innovation, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
    Nishio, Shuichi
    Advanced Telecommunications Research Institute International (ATR) Hiroshi Ishiguro Lab (HIL), 2-2-2 Hikaridai, Keihanna Science City, Kyoto 619-0288, Japan.
    Ishiguro, Hiroshi
    Advanced Telecommunications Research Institute International (ATR) Hiroshi Ishiguro Lab (HIL), 2-2-2 Hikaridai, Keihanna Science City, Kyoto 619-0288, Japan & Department of Systems Innovation, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
    Designing Robots for Well-being: Theoretical Background and Visual Scenes of Affectionate Play with a Small Humanoid Robot2014Ingår i: Lovotics, ISSN 2090-9888, Vol. 1, nr 1, artikel-id 1000101Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Social well-being, referring to a subjectively perceived long-term state of happiness, life satisfaction, health, and other prosperity afforded by social interactions, is increasingly being employed to rate the success of human social systems. Although short-term changes in well-being can be difficult to measure directly, two important determinants can be assessed: perceived enjoyment and affection from relationships. The current article chronicles our work over several years toward achieving enjoyable and affectionate interactions with robots, with the aim of contributing to the perception of social well-being in interacting persons. Emphasis has been placed on both describing in detail the theoretical basis underlying our work, and relating the story of each of several designs from idea to evaluation in a visual fashion. For the latter, we trace the course of designing four different robotic artifacts intended to further our understanding of how to provide enjoyment, elicit affection, and realize one specific scenario for affectionate play. As a result, by describing (a) how perceived enjoyment and affection contribute to social well-being, and (b) how a small humanoid robot can proactively engage in enjoyable and affectionate play—recognizing people’s behavior and leveraging this knowledge—the current article informs the design of companion robots intended to facilitate a perception of social well-being in interacting persons during affectionate play.

  • 413.
    Cooney, Martin
    et al.
    Hiroshi Ishiguro Laboratory, Advanced Telecommunications, Research Institute International (ATR), 2-2-2 Hikaridai, Keihanna Science City, Kyoto 619-0288, Japan & Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, Japan.
    Nishio, Shuichi
    Hiroshi Ishiguro Laboratory, Advanced Telecommunications, Research Institute International (ATR), 2-2-2 Hikaridai, Keihanna Science City, Kyoto, Japan.
    Ishiguro, Hiroshi
    Hiroshi Ishiguro Laboratory, Advanced Telecommunications, Research Institute International (ATR), 2-2-2 Hikaridai, Keihanna Science City, Kyoto 619-0288, Japan Department of Systems Innovation, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka, Japan.
    Importance of Touch for Conveying Affection in a Multimodal Interaction with a Small Humanoid Robot2015Ingår i: International Journal of Humanoid Robotics, ISSN 0219-8436, Vol. 12, nr 1, artikel-id 1550002Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    To be accepted as a part of our everyday lives, companion robots will require the capability to communicate socially, recognizing people's behavior and responding appropriately. In particular, we hypothesized that a humanoid robot should be able to recognize affectionate touches conveying liking or dislike because (a) a humanoid form elicits expectations of a high degree of social intelligence, (b) touch behavior plays a fundamental and crucial role in human bonding, and (c) robotic responses providing affection could contribute to people's quality of life. The hypothesis that people will seek to affectionately touch a robot needed to be verified because robots are typically not soft or warm like humans, and people can communicate through various other modalities such as vision and sound. The main challenge faced was that people's social norms are highly complex, involving behavior in multiple channels. To deal with this challenge, we adopted an approach in which we analyzed free interactions and also asked participants to rate short video-clips depicting human–robot interaction. As a result, we verified that touch plays an important part in the communication of affection from a person to a humanoid robot considered capable of recognizing cues in touch, vision, and sound. Our results suggest that designers of affectionate interactions with a humanoid robot should not ignore the fundamental modality of touch.

  • 414.
    Cooney, Martin
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Laboratoriet för intelligenta system. Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Orand, Abbas
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Larsson, Hanna
    Högskolan i Halmstad.
    Pihl, Jacob
    Högskolan i Halmstad.
    Aksoy, Eren
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Exercising with an “Iron Man”: Design for a Robot Exercise Coach for Persons with Dementia2020Ingår i: 29th IEEE International Conference on Robot and Human Interactive Communication, Piscataway: Institute of Electrical and Electronics Engineers (IEEE), 2020, s. 899-905Konferensbidrag (Refereegranskat)
    Abstract [en]

    Socially assistive robots are increasingly being designed to interact with humans in various therapeutical scenarios. We believe that one useful scenario is providing exercise coaching for Persons with Dementia (PWD), which involves unique challenges related to memory and communication. We present a design for a robot that can seek to help a PWD to conduct exercises by recognizing their behaviors and providing appropriate feedback, in an online, multimodal, and engaging way. Additionally, following a mid-fidelity prototyping approach, we report on some observations from an exploratory user study using a Baxter robot; although limited by the sample size and our simplified approach, the results suggested the usefulness of the general scenario, and that the degree to which a robot provides feedback–occasional or continuous– could moderate impressions of attentiveness or fun. Some possibilities for future improvement are outlined, touching on richer recognition and behavior generation strategies based on deep learning and haptic feedback, toward informing next designs. © 2020 IEEE.

  • 415.
    Cooney, Martin
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Pashami, Sepideh
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Pinheiro Sant'Anna, Anita
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Fan, Yuantao
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Nowaczyk, Sławomir
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Pitfalls of Affective Computing: How can the automatic visual communication of emotions lead to harm, and what can be done to mitigate such risks?2018Ingår i: WWW '18 Companion Proceedings of the The Web Conference 2018, New York, NY: ACM Publications, 2018, s. 1563-1566Konferensbidrag (Refereegranskat)
    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.

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  • 416.
    Cooney, Martin
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Valle, Felipe
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS).
    Vinel, Alexey
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Robot First Aid: Autonomous Vehicles Could Help in Emergencies2021Ingår i: 2021 Swedish Artificial Intelligence Society Workshop (SAIS), IEEE, 2021Konferensbidrag (Refereegranskat)
    Abstract [en]

    Safety is of critical importance in designing autonomous vehicles (AVs) that will be able to perform effectively in complex, mixed-traffic, real-world urban environments. Some prior research has looked at how to proactively avoid accidents with safe distancing and driver monitoring, but currently little research has explored strategies to recover afterwards from emergencies, from crime to natural disasters. The current short paper reports on our ongoing work using a speculative prototyping approach to explore this expansive design space, in the context of how a robot inside an AV could be deployed to support first aid. As a result, we present some proposals for how to detect emergencies, and examine and help victims, as well as lessons learned in prototyping. Thereby, our aim is to stimulate discussion and ideation that-by considering the prevalence of Murphy's law in our complex world, and the various technical, ethical, and practical concerns raised-could potentially lead to useful safety innovations. © 2021 IEEE.

  • 417.
    Cooney, Martin
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Vinel, Alexey
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Magic in Human-Robot Interaction (HRI)2022Ingår i: 2022 Swedish Artificial Intelligence Society Workshop (SAIS), IEEE, 2022Konferensbidrag (Refereegranskat)
    Abstract [en]

    'Magic' is referred to here and there in the robotics literature, from 'magical moments' afforded by a mobile bubble machine, to 'spells' intended to entertain and motivate children-but what exactly could this concept mean for designers? Here, we present (1) some theoretical discussion on how magic could inform interaction designs based on reviewing the literature, followed by (2) a practical description of using such ideas to develop a simplified prototype, which received an award in an international robot magic competition. Although this topic can be considered unusual and some negative connotations exist (e.g., unrealistic thinking can be referred to as magical), our results seem to suggest that magic, in the experiential, supernatural, and illusory senses of the term, could be useful to consider in various robot design contexts, also for artifacts like home assistants and autonomous vehicles-thus, inviting further discussion and exploration. © 2022 IEEE.

  • 418.
    Cooney, Martin
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Yang, Can
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Padi Siva, Abhilash
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Arunesh, Sanjana
    Högskolan i Halmstad, Akademin för informationsteknologi.
    David, Jennifer
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Teaching Robotics with Robot Operating System (ROS): A Behavior Model Perspective2018Ingår i: CEUR Workshop Proceedings, Aachen: Rheinisch-Westfaelische Technische Hochschule Aachen , 2018, Vol. 2329, s. 59-68Konferensbidrag (Refereegranskat)
    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. © 2018 CEUR-WS. All Rights Reserved.

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  • 419.
    Cortinhal, Tiago
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Tzelepi, George
    Volvo Technology AB, Volvo Group Trucks Technology, Gothenburg, Sweden.
    Erdal Aksoy, Eren
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES). Volvo Technology AB, Volvo Group Trucks Technology, Gothenburg, Sweden.
    SalsaNext: Fast, Uncertainty-aware Semantic Segmentation of LiDAR Point Clouds for Autonomous Driving2021Ingår i: Advances in Visual Computing: 15th International Symposium, ISVC 2020, San Diego, CA, USA, October 5–7, 2020, Proceedings, Part II / [ed] Bebis, G., Yin, Z., Kim, E., Bender, J., Subr, K., Kwon, B.C., Zhao, J., Kalkofen, D., Baciu, G., Cham: Springer, 2021, Vol. 12510, s. 207-222Konferensbidrag (Refereegranskat)
    Abstract [en]

    In this paper, we introduce SalsaNext for the uncertainty-aware semantic segmentation of a full 3D LiDAR point cloud in real-time. SalsaNext is the next version of SalsaNet which has an encoder-decoder architecture where the encoder unit has a set of ResNet blocks and the decoder part combines upsampled features from the residual blocks. In contrast to SalsaNet, we introduce a new context module, replace the ResNet encoder blocks with a new residual dilated convolution stack with gradually increasing receptive fields and add the pixel-shuffle layer in the decoder. Additionally, we switch from stride convolution to average pooling and also apply central dropout treatment. To directly optimize the Jaccard index, we further combine the weighted cross entropy loss with Lovász-Softmax loss. We finally inject a Bayesian treatment to compute the epistemic and aleatoric uncertainties for each point in the cloud. We provide a thorough quantitative evaluation on the Semantic-KITTI dataset, which demonstrates that the proposed SalsaNext outperforms other published semantic segmentation networks and achieves 3.6% more accuracy over the previous state-of-the-art method. We also release our source code1. © 2020, Springer Nature Switzerland AG.

    [1] https://github.com/TiagoCortinhal/SalsaNext

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  • 420.
    Cristofer, Englund
    et al.
    Viktoria Swedish ICT, Gothenburg, Sweden.
    Chen, Lei
    Viktoria Swedish ICT, Gothenburg, Sweden.
    Vinel, Alexey
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Lin, Shih-Yang
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Future Applications of VANETs2015Ingår i: Vehicular Ad Hoc Networks: Standards, Solutions, and Research / [ed] Claudia Campolo, Antonella Molinaro & Riccardo Scopigno, Cham: Springer Publishing Company, 2015, s. 525-544Kapitel i bok, del av antologi (Refereegranskat)
    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.

  • 421.
    Cronquist, Björn
    et al.
    Kristianstad University College, Sweden.
    Johansson, Lars-Olof
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Människa och Informationsteknologi (MI-lab).
    Innovation in SME: A Case of Firm-Supportive Research2009Ingår i: 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, s. 187-201Konferensbidrag (Refereegranskat)
    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.

  • 422.
    da Costa, Luis Antonio L. F.
    et al.
    Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
    Duarte, Eduardo K.
    Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
    Erneberg, Mikael
    H&E Solutions AB, Solna, Sweden.
    Pignaton de Freitas, Edison
    Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
    Vinel, Alexey
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Poster: SafeSmart - A VANET system for efficient communication for emergency vehicles2020Ingår i: IFIP Networking 2020 Conference and Workshops June 22-25, 2020 - Paris, France, Piscataway: Institute of Electrical and Electronics Engineers (IEEE), 2020, s. 643-645Konferensbidrag (Refereegranskat)
    Abstract [en]

    One important use case for Vehicular Ad-hoc Networks (VANETs) are applications related to emergency vehicles (EV). V2I (Vehicle-to-Infrastructure) communication can provide the infrastructure and protocol stack necessary to establish a communication channel between the transceivers in the EVs and the ones in the traffic lights, reducing accident risks and also help save valuable time. This paper outlines the system design of an EV warning system that makes use of V2I communication. A prototype of the system has been tested in a traffic simulation environment including EVs and traffic lights. To evaluate the system we performed a simulation and conducted a performance comparison between the travel times for EVs in normal traffic and when the system is in use. © 2020 IFIP.

  • 423.
    Daher, Robil
    et al.
    Rostock University, Rostock, Germany.
    Vinel, AlexeyDepartment of Communications Engineering, Tampere University of Technology, Tampere, Finland.
    Roadside Networks for Vehicular Communications: Architectures, Applications, and Test Fields2012Samlingsverk (redaktörskap) (Refereegranskat)
    Abstract [en]

    Vehicular Communication Networks (VCNs) is a technology aim for improving traffic safety and efficiency in different road systems and networks. VCNs offer an efficient communication platform for intelligent transportation systems and related services, as well as multimedia and date services.

    Roadside Networks for Vehicular Communications: Architectures, Applications, and Test Fields attempts to close the gap between science and technology in the field of roadside backbones for VCNs. This collection will be useful not only for researchers and engineers at universities, but for students in the fields of wireless communication networks, especially vehicular communication networks, and backbone networks as well.

  • 424.
    Dahl, Oskar
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Johansson, Fredrik
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Understanding usage of Volvo trucks2019Självständigt arbete på avancerad nivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Trucks are designed, configured and marketed for various working environments. There lies a concern whether trucks are used as intended by the manufacturer, as usage may impact the longevity, efficiency and productivity of the trucks.

    In this thesis we propose a framework divided into two separate parts, that aims to extract costumers’ driving behaviours from Logged Vehicle Data (LVD) in order to a): evaluate whether they align with so-called Global Transport Application (GTA) parameters and b): evaluate the usage in terms of performance. Gaussian mixture model (GMM) is employed to cluster and classify various driving behaviors. Association rule mining was applied on the categorized clusters to validate that the usage follow GTA configuration. Furthermore, Correlation Coefficient (CC) was used to find linear relationships between usage and performance in terms of Fuel Consumption (FC).

    It is found that the vast majority of the trucks seemingly follow GTA parameters, thus used as marketed. Likewise, the fuel economy was found to be linearly dependent with drivers’ various performances.

    The LVD lacks detail, such as Global Positioning System (GPS) information, needed to capture the usage in such a way that more definitive conclusions can be drawn.

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  • 425.
    Dahlgren, Patrik
    et al.
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE).
    Heehrle, Emil
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE).
    Persson, Jim
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE).
    Analys av Örkelljunga Utbildningscentrums IT-miljö2013Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    I dagens samhälle där tillgången till information är nästintill obegränsad och nätverkfinns överallt ökar kraven på IT-säkerhet. Gratis programvaror och information omhur man använder dessa finns enkelt tillgängliga för vem som helst på Internet idag.Då många av dessa programsviter har full support och de är mycket användarvänligainnebär det också att fler kan utföra intrång och attacker mot olika IT-miljöer utanatt behöva inneha expertis inom området. Ett hjälpmedel mot dessa hot ärpenetrationstesting, där man kan identifiera eventuella brister och sårbarheter i ettgivet IT-system.Den här rapportens mål har varit att utreda om Örkelljunga Utbildningscentrums ITsäkerhetstår i proportion till känsligheten på informationen som de innehar ochbehandlar.Detta har gjorts genom ett penetrationstest, där man på plats har skannat skolansnätverk efter sårbarheter och möjliga intrångsvägar.Därefter har sårbarheterna utvärderats och rankats efter hur kritiska de anses varaoch utifrån detta teoretiskt bevisat hur man som attackerare hade kunnat gå till vägaför att komma åt eller förstöra känslig information.Resultaten visade på ett flertal kritiska brister som vid närmare analys hade kunnatutnyttjas för att ta sig in i systemet och eventuellt komma åt känslig information.Slutsats blev därför att Örkelljunga Utbildningscentrums IT-miljö för närvarande intehar tillräcklig säkerhet i proportion till känsligheten på information som de innehar.

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  • 426.
    Dalati, Fares
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Martinez Lopez, Pablo Enrique
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Vital Sign Radar Redesign: Further Development of a Compact, Highly integrated 60 GHz Radar for Human Vital Sign Monitoring2017Självständigt arbete på avancerad nivå (magisterexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Nowadays, thanks to the modern technologies, the human being has been able todevelop new techniques to solve problems present in the past. Regarding the medicalfield, it is common to use several apparatus in order to measure the vital signs. Themain drawback about the traditional methods employed for this purpose is that theyare invasive towards the patient. However, in this thesis it has been developed afurther design of a radar system so as to be able to measure these vital signs in awireless way.

    Based on a 60 GHz frequency modulated continuous wave radar chip, it has been ableto increase the performance of the measurements by adding a second radar chip.Because of this new feature, the radar system is now having a better precision byprocessing greater data matrix to analyse the targets positions and theirmeasurements. In addition, an enhanced MCU has been incorporated in order toavoid performance bottlenecks because it is necessary to handle the processing of thedata received by the two radar chips. Lastly, reducing the sweeping time (periodbetween the lowest frequency broadcast to linearly reach the highest frequencybroadcast) from 20 ms the previous design to 1 ms, which requires higher samplingrate to cover the fast sweep and provide higher flow of information that leads to fasterdetection process.

    A 3D design of the prototype has been designed to show the physical appearance itwould have once entering in production. The result is a compact and highlyintegrated radar system which will be able to monitor the heart beating andrespiration frequency of a human being in a range of ten meters.

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  • 427.
    D'Ambrosio, Marco
    et al.
    Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET). Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), Bio- och miljösystemforskning (BLESS), Energiteknik.
    Medaglia, Marco
    Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET). Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), Bio- och miljösystemforskning (BLESS), Energiteknik.
    Vertical Axis Wind Turbines: History, Technology and Applications2010Självständigt arbete på avancerad nivå (masterexamen), 15 poäng / 22,5 hpStudentuppsats (Examensarbete)
    Abstract [en]

    In  this  Master Thesis  a  review  of  different  type  of  vertical  axis  wind turbines (VAWT)  and  a preliminary investigation of a new kind of VAWT are presented.

    After an introduction about the historical background of wind power, the report deals with a more accurate analysis of the main type of VAWT, showing their characteristics and their operations. The aerodynamics of the wind turbines and a review of different type on generators that can be used to connect the wind mill to the electricity grid are reported as well.

    Several statistics are also presented, in order to explain how the importance of the wind energy has grown  up  during  the  last  decades  and  also  to  show  that  this development  of  the  market  of  wind power  creates  new  opportunity  also  for VAWT,  that  are  less  used  than  the  horizontal  axis  wind turbine (HAWT).

    In the end of 2009 a new kind of vertical axis wind turbine, a giromill 3 blades type, has been built in Falkenberg, by the Swedish company VerticalWind. The tower of this wind turbine is made by wood,  in  order  to  get  a  cheaper  and  more environment  friendly  structure,  and  a  direct  driven synchronous multipole with permanent magnents generator is located at its bottom. This 200 kW VAWT represents the intermediate step between the 12 kW prototype, built in collaboration with the Uppsala University, and the common Swedish commercial size of 2 MW, which is the goal of the company.

    A  preliminary  investigation  of  the  characteristics  of  this  VAWT  has  been done, focusing  in particular on the value of the frequency of resonance of the tower, an important value that must be never reached during the operative phase in order to avoid serious damage to all the structure, and on the power curve, used to evaluate the coefficient of power (Cp) of the turbine. The results of this investigation and  the steps  followed  to  get  them  are  reported.  Moreover  a  energy production analysis of the turbine has been done using WindPro, as well as a comparison with and older type on commercial VAWT.

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  • 428.
    Danilovic, Mike
    et al.
    Högskolan i Halmstad, Akademin för företagande, innovation och hållbarhet. Shanghai Dianji University, Shanghai, China.
    Lihua Liu, Jasmine
    Lund University Lund, Sweden & Shanghai Dianji University, Shanghai, China.
    Electrification of the Transportation System in China: Exploring Battery-Swapping for Electric Vehicles in China 1.02021Rapport (Övrigt vetenskapligt)
    Abstract [en]

    Thus far, the global electrification of transportation has been conducted mainly by the use of battery-powered vehicles. Over the years, the number of electric vehicles (EV) has grown substantially in number, the batteries have become larger in size providing vehicles with longer ranges, the efficiency of batteries has improved, and the prices have decreased substantially, etc. However, all batteries need to be charged with electricity. Several solutions to battery charging have been introduced, static and dynamic conductive and inductive technologies as well as cable charging. The most common, almost the dominant global solution, is stationary charging using cables, whether normal or fast charging.

    There is, however, another battery charging tech- nology, that of battery-swapping, i.e. replacement of the discharged battery in the vehicle with a charged battery from outside the vehicle. This modern battery-swapping technology was used by the German company Mercedes-Benz in the 1970s, the Israeli company Better Place in 2007 and also by US company Tesla in 2013. Tesla originally designed their car in a modular way that embraced battery- swapping but then opted for their own proprietary cable-based charging system and a business model that integrates cars and charging.

    During the 2010s, when the country started the substantial development of new energy vehicles, Chinese grid operators and entrepreneurial OEMs tried to put the swapping technology into practice in collaboration with Better Place. However, the early exploitation of battery-swapping failed due to the high cost of battery-swapping systems and batteries, lack of standards, lack of openness and diver- gent technical and economic interests among key stakeholders and objections from car manufacturers to opening up their vehicle structure. Additionally, one fire accident on a pilot project car raised safety questions that needed to be solved. Lastly, political support was lacking because the Chinese government did not promote battery-swapping technology in the countries’ first strategic development plan for a new energy vehicle 2012 to 2020.From 2012 to 2016, battery-swapping charging stations underwent large-scale development as the major complementary energy solution in China. BAIC, Lifan, NIO and some other Chinese OEM brands together with third-party battery-swap station opera- tors, such as Aulton, insisted on exploring the battery-swapping option and made substantial progress. Market scale reached a certain volume and the technology became more mature. When cable-based charging solutions became insufficient, forming the bottleneck of the rapidly growing EV market, Lifan again proposed battery-swapping as a complementary solution to the national congress in 2016. This time, the attitude of the various players was more positive. In 2020, after a discussion meeting with delegations from major stakeholders related to EV development, Chinese central government included battery-swapping technology in the National New Energy Vehicle Development Strategy 2021 to 2035 and included battery-swapping in the list of the New Infrastructure Construction campaign.

    Since 2020, there has been fast growth in battery- swapping infrastructure in Chinese cities and along the main highways. Modularly designed cars with fully integrated automated fast battery-swapping system solutions are available. There are also other emerging application areas for battery-swapping such as buses, trucks, heavy-duty vehicles etc.

    The new emerging business model for commercialization of battery-swapping is based on the idea of separating the price of the electric car from its cost liest part, the battery. Batteries can be chosen flexibly based on their size and can either be purchased or rented on a monthly basis to reduce anxiety and uncertainty among customers. Also, the charging of batteries can be cable-based or based on a monthly subscription according to the required amount of energy, resulting in great flexibility for the customer.

    Thus, the investment cost for customers is based on their purchasing power, risk taking attitude, level of uncertainty and driving habits. The swapping time is reduced down to 1 minute. This system enables great flexibility because the customer can choose and, if necessary, subsequently change the battery size depending on their needs as well as choosing the charging system and payment methods.

    At the end of January 2021, there were 562 battery-swap stations operative in China, providinga service to taxis, online car-hailing vehicles, private passenger vehicles and business operation vehicles. More than 100,000 cars have been sold with battery-swapping systems. Battery-swapping’s status asan important complementary solution to EV energy supply has been recognized by various parties. The feasibility of developing battery-swapping for taxis, online car-hailing vehicles, logistic vehicles and other business operation vehicles has been preliminarily verified.

    The major challenges faced by players include the large investment required for battery-swapping station construction, operation and maintenance requests, the high financial cost of batteries in the swapping stations, and battery depreciation, difficulty in achieving unified standards, overlap of the division of responsibilities, limited space for station construc- tion and safety issues. Accordingly, solutions are being intensely worked on by various players.

    A multi-player, new ecosystem is investing jointly in battery-swap stations and battery asset companies are also starting up. Third-party operator Aulton is initiating the exploration of battery standardization by unifying the interfaces of the battery outer package and the vehicles, leaving the content of the battery to OEMs. Government agencies are also driving a discussion on the standardization issue. Innovative collaborations on space sharing is providing space for battery-swap stations. Active and passive safety technologies are being developed that address the safety issue.

    A combination of local provincial governments, the automotive industry, IT-developers, entrepreneurs, state grid system operators, swapping system operators, electricity suppliers, institutes and univer- sities are developing a new ecosystem and placing large-scale systems in operation.We call this the Chinese approach, the Symbiotic Business Model, the collective exploration and experimenting of industrial, institutional and political players, leading all the way from technology devel- opment through to the establishment of local market solutions for the development and commercialization of battery-swapping systems, and the simultaneous construction and reshaping of a new ecosystem.

    The placement of battery-swapping on the national strategic list demonstrates the systematic approach to the electrification of transportation that needs to be seen and understood starting from energy production, distribution, charging, and the creation of a balancing component in overall energy sourcing and energy storage. Thus, the new ecosystem comprises the major part of the main players in the energy and electrification system. Battery-swapping must not be seen as just one technology that is only a business target for some players, but rather as strategic solution to the entire energy system transformation and part of the ongoing energy and transportation transformation.

    The battery-swapping system when operated ona large-scale has significant strategic importanceas decentralized, distributed and localized energy storage helping to balance energy production and distribution in the national grid system. Substantial rapid developmental growth in battery-swapping is expected in China from 2021. It is still not possible to predict the long-term development of this technology approach, but it is only in trying it, that it will be possible to discover the outcome.

    Implementation of the battery-swapping system can only be successful when all the main players in the energy-transportation system and along the value chain collaborate in the development and commercialization, implementation and large-scale diffusion.

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  • 429.
    Dankers, Wouter
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Learning wireless channel models to design real-time communications from vehicles2018Självständigt arbete på avancerad nivå (masterexamen), 80 poäng / 120 hpStudentuppsats (Examensarbete)
    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.

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  • 430.
    Danqing, Ni
    et al.
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Zao, Sun
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Junwei, Chen
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    On Time Discrete Simulation of cooperative Vehicle's Kinematic Behaviour2012Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    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.

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    On Time Discrete Simulation Cooperative Vehicle's Kinematic Behaviour
  • 431.
    Davari, Narjes
    et al.
    INESC TEC, Porto, Portugal.
    Pashami, Sepideh
    Högskolan i Halmstad, Akademin för informationsteknologi. RISE Research Institute of Sweden, Kista, Sweden.
    Veloso, Bruno
    INESC TEC, Porto, Portugal; University of Porto, Porto, Portugal; University Portucalense, Porto, Portugal.
    Nowaczyk, Sławomir
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Fan, Yuantao
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Mota Pereira, Pedro
    Metro of Porto, Porto, Portugal.
    Ribeiro, Rita P.
    INESC TEC, Porto, Portugal; University of Porto, Porto, Portugal.
    Gama, João
    INESC TEC, Porto, Portugal; University of Porto, Porto, Portugal.
    A Fault Detection Framework Based on LSTM Autoencoder: A Case Study for Volvo Bus Data Set2022Ingår i: Advances in Intelligent Data Analysis XX: 20th International Symposium on Intelligent Data Analysis, IDA 2022 Rennes, France, April 20–22, 2022: Proceedings / [ed] Tassadit Bouadi; Elisa Fromont; Eyke Hüllermeier, Cham: Springer, 2022, s. 39-52Konferensbidrag (Refereegranskat)
    Abstract [en]

    This study applies a data-driven anomaly detection framework based on a Long Short-Term Memory (LSTM) autoencoder network for several subsystems of a public transport bus. The proposed framework efficiently detects abnormal data, significantly reducing the false alarm rate compared to available alternatives. Using historical repair records, we demonstrate how detection of abnormal sequences in the signals can be used for predicting equipment failures. The deviations from normal operation patterns are detected by analysing the data collected from several on-board sensors (e.g., wet tank air pressure, engine speed, engine load) installed on the bus. The performance of LSTM autoencoder (LSTM-AE) is compared against the multi-layer autoencoder (mlAE) network in the same anomaly detection framework. The experimental results show that the performance indicators of the LSTM-AE network, in terms of F1 Score, Recall, and Precision, are better than those of the mlAE network. © 2022 The Author(s), under exclusive license to Springer Nature Switzerland AG

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  • 432.
    David, Jennifer
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Mostowski, Wojciech
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Aramrattana, Maytheewat
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Fan, Yuantao
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Varshosaz, Mahsa
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Karlsson, Patrick
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Roden, Marcus
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Bogga, Anders
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Carlsen, Jakob
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Johansson, Emil
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Andersson, Emil
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Design and Development of a Hexacopter for the Search and Rescue of a Lost Drone2019Konferensbidrag (Refereegranskat)
    Abstract [en]

    Search and rescue with an autonomous robot is an attractive and challenging task within the research community. This paper presents the development of an autonomous hexacopter that is designed for retrieving a lost object, like a drone, from a vast-open space, like a desert area. Navigating its path with a proposed coverage path planning strategy, the hexacopter can efficiently search for a lost target and locate it using an image-based object detection algorithm. Moreover, after the target is located, our hexacopter can grasp it with a customised gripper and transport it back to a destined location. It is also capable of avoiding static obstacles and dynamic objects. The proposed system was realised in simulations before implementing it in a real hardware setup, i.e. assembly of the drone, crafting of the gripper, software implementation and testing under real-world scenarios. The designed hexacopter won the best UAV design award at the CPS-VO 2018 Competition held in Arizona, USA.

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  • 433.
    David, Jennifer
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Philippsen, Roland
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Task assignment and trajectory planning in dynamic environments for multiple vehicles2015Ingår i: Frontiers in Artificial Intelligence and Applications, ISSN 0922-6389, E-ISSN 1879-8314, Vol. 278, s. 179-181Artikel i tidskrift (Refereegranskat)
    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.

  • 434.
    David, Jennifer
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Rögnvaldsson, Thorsteinn
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Multi-robot routing problem with min-max objective2021Ingår i: Robotics, ISSN 2218-6581, Vol. 10, nr 4, artikel-id 122Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    In this paper, we study the “Multi-Robot Routing problem” with min–max objective (MRR-MM) in detail. It involves the assignment of sequentially ordered tasks to robots such that the maximum cost of the slowest robot is minimized. The problem description, the different types of formulations, and the methods used across various research communities are discussed in this paper. We propose a new problem formulation by treating this problem as a bipartite graph with a permutation matrix to solve it. A comparative study is done between three methods: Stochastic simulated annealing, deterministic mean-field annealing, and a heuristic-based graph search method. Each method is investigated in detail with several data sets (simulation and real-world), and the results are analysed and compared with respect to scalability, computational complexity, optimality, and its application to real-world scenarios. The paper shows that the heuristic method produces results very quickly with good scalability. However, the solution quality is sub-optimal. On the other hand, when optimal or near-optimal results are required with considerable computational resources, the simulated annealing method proves to be more efficient. However, the results show that the optimal choice of algorithm depends on the dataset size and the available computational budget. The contribution of the paper is three-fold: We study the MRR-MM problem in detail across various research communities. This study also shows the lack of inter-research terminology that has led to different names for the same problem. Secondly, formulating the task allocation problem as a permutation matrix formulation (bipartite graph) has opened up new approaches to solve this problem. Thirdly, we applied our problem formulation to three different methods and conducted a detailed comparative study using real-world and simulation data. © 2021 by the authors.

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  • 435.
    David, Jennifer
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Rögnvaldsson, Thorsteinn
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Söderberg, Bo
    Lund University, Lund, Sweden.
    Ohlsson, Mattias
    Högskolan i Halmstad, Akademin för informationsteknologi. Lund University, Lund, Sweden.
    Deterministic annealing with Potts neurons for multi-robot routing2022Ingår i: Intelligent Service Robotics, ISSN 1861-2776, Vol. 15, nr 3, s. 321-334Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A deterministic annealing (DA) method is presented for solving the multi-robot routing problem with min–max objective. This is an NP-hard problem belonging to the multi-robot task allocation set of problems where robots are assigned to a group of sequentially ordered tasks such that the cost of the slowest robot is minimized. The problem is first formulated in a matrix form where the optimal solution of the problem is the minimum-cost permutation matrix without any loops. The solution matrix is then found using the DA method is based on mean field theory applied to a Potts spin model which has been proven to yield near-optimal results for NP-hard problems. Our method is bench-marked against simulated annealing and a heuristic search method. The results show that the proposed method is promising for small-medium sized problems in terms of computation time and solution quality compared to the other two methods. © The Author(s) 2022

  • 436.
    David, Jennifer
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Valencia, Rafael
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Iagnemma, Karl
    Massachusetts Institute of Technology, Cambridge, MA, USA.
    Task Assignment and Trajectory Planning in Dynamic environments for Multiple Vehicles2016Konferensbidrag (Refereegranskat)
    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.

    Ladda ner fulltext (pdf)
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  • 437.
    David, Jennifer
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Valencia, Rafael
    Carnegie Mellon University, Pittsburgh, USA.
    Philippsen, Roland
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    Iagnemma, Karl
    Massachusetts Institute of Technology, Cambridge, USA.
    Local Path Optimizer for an Autonomous Truck in a Harbour Scenario2017Ingår i: Field and Service Robotics: Results of the 11th International Conference / [ed] Marco Hutter; Roland Siegwart, Springer Publishing Company, 2017Konferensbidrag (Refereegranskat)
    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. © 2018, Springer International Publishing AG.

  • 438.
    David, Jennifer
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), CAISR Centrum för tillämpade intelligenta system (IS-lab).
    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 Terminal2017Ingår i: ICRA 2017 Workshop on Robotics and Vehicular Technologies for Self-driving cars, 2017Konferensbidrag (Refereegranskat)
  • 439.
    Davidsson, Adam
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Lindbom, Fredrik
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Slow-response generator2015Självständigt arbete på grundnivå (högskoleexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Because of environmental pollution, forces the automotive industry constantly reduced emissions requirements legislated by the authorities. Improved techniques for engine control are a must for bringing down emissions. The use of an Exhaust Gas Recirculation (EGR) reduces NOx emissions significantly. Faulty EGR valves affect the emissions negative and therefore needs to be eliminated.

    It is possible to create malfunctions on the EGR valve by modifying the software of the control unit (ECU), but it does not create realistic malfunctions. The problem by modifying the software is that flags and various parameters are set to confirm the malfunction of the ECU. To create actual failure of the EGR valve an external tool to modify the control signal is needed.

    The project's main objective is on a flexible way creating malfunctions on the EGR valve in a truck engine. By investigating engine behavior in a realistic and credible way, one can eliminate malfunctions on the EGR valve. The aim was achieved by a model that has been developed that can, using electronics and a microprocessor read and create a control signal.

    The electronic circuit is controlled by the microprocessor, which can modify the signal and create malfunctions in the form of a slow valve "slow-response". A graphical user interface is used to change and influence the error signal. The circuit with the microprocessor is placed safely in a box to both protect and preserve the components.

    Simulation of Slow response has resulted in an incorrect operated valve being created. Using two different methods a Slow-response can be created. One method is a delay in time, which occurs when the new position is given, the second method is a ramp function when the control signal is gradually increasing. The software can also create an error that mimics a stuck valve of a fixed value. With the above listed methods it is possible in theory to find unknown malfunctions on the EGR valve that influence emissions negatively. 

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  • 440.
    Davidsson, Martin
    et al.
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE).
    Karlsson, Jonas
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE).
    Mätning och analys av elkvalité2012Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
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    Mätning och analys av elkvalité
  • 441.
    Davidsson, Pontus
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Englund, Niklas
    Högskolan i Halmstad, Akademin för informationsteknologi.
    Docker forensics: Investigation and data recovery on containers2020Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Container technology continuously grows in popularity, and the forensic area is less explored than other areas of research concerning containers. The aim of this thesis is, therefore, to explore Docker containers in a forensic investigation to test whether data can be recovered from deleted containers and how malicious processes can be detected in active containers. The results of the experiments show that, depending on which container is used, and how it is configured, data sometimes persists after the container is removed. Furthermore, file carving is tested and evaluated as a useful method of recovering lost files from deleted containers, should data not persist. Lastly, tests reveal that malicious processes running inside an active container can be detected by inspection from the host machine.

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  • 442.
    de Freitas, Edison Pignaton
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Inbyggda system (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
    Högskolan i Halmstad, Akademin för informationsteknologi, 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 Support2010Konferensbidrag (Refereegranskat)
    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.

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  • 443.
    de Freitas, Edison Pignaton
    et al.
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Allgayer, Rodrigo S.
    PPGEE, UFRGS, Brazil.
    Wehrmeister, Marco A.
    PPGC, UFRGS, Brazil.
    Pereira, Carlos E.
    PPGEE, UFRGS, Brazil.
    Larsson, Tony
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Supporting platform for heterogeneous sensor network operation based on unmanned vehicles systems and wireless sensor nodes2009Ingår i: 2009 IEEE Intelligent Vehicles Symposium, Volumes 1 and 2 / [ed] Institute of Electrical and Electronics, New York: IEEE Press, 2009, s. 786-791Konferensbidrag (Refereegranskat)
    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.

  • 444.
    de Freitas, Edison Pignaton
    et al.
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (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
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Dynamic activity and task allocation supporting uav teams in surveillance systems2009Ingår i: Proceedings of the International Multiconference on Computer Science and Information Technology, 2009. IMCSIT '09, Piscataway, N.J.: IEEE Press, 2009, s. 51-58Konferensbidrag (Refereegranskat)
    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.

  • 445.
    de Freitas, Edison Pignaton
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES). Institute of Informatics, Federal University of Rio Grande do Sul, Brazil.
    Bösch, Bernhard
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (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
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Mobile Agents Model and Performance Analysis of a Wireless Sensor Network Target Tracking Application2011Ingår i: 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, s. 274-286Konferensbidrag (Refereegranskat)
    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.

  • 446.
    de Freitas, Edison Pignaton
    et al.
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (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
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).
    Middleware Support in Unmanned Aerial Vehicles and Wireless Sensor Networks for Surveillance Applications2009Ingår i: 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, s. 289-296Konferensbidrag (Refereegranskat)
    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.

  • 447.
    de Freitas, Edison Pignaton
    et al.
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (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
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Centrum för forskning om inbyggda system (CERES).
    Analyzing different levels of geographic context awareness in agent ferrying over VANETs2011Ingår i: Proceedings of the 2011 ACM Symposium on Applied Computing, New York: ACM Press, 2011, s. 413-418Konferensbidrag (Refereegranskat)
    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.

  • 448.
    de Freitas, Edison Pignaton
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Inbyggda system (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
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Inbyggda system (CERES).
    Decentralized task distribution among cooperative UAVs in surveillance systems applications2010Ingår i: 2010 Seventh International Conference on Wireless On-demand Network Systems and Services, New York: IEEE Press, 2010, s. 121-128Konferensbidrag (Refereegranskat)
    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.

  • 449.
    de Freitas, Edison Pignaton
    et al.
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Inbyggda system (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
    Högskolan i Halmstad, Akademin för informationsteknologi, Halmstad Embedded and Intelligent Systems Research (EIS), Inbyggda system (CERES).
    An agent framework to support sensor networks’ setup and adaptation2009Ingår i: International Multiconference on Computer Science and Information Technology, 2009. IMCSIT ’09, Piscataway, N.J.: IEEE Press, 2009, s. 619-626Konferensbidrag (Refereegranskat)
    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.

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    fulltext
  • 450.
    de Freitas, Edison Pignaton
    et al.
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Inbyggda system (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
    Högskolan i Halmstad, Sektionen för Informationsvetenskap, Data– och Elektroteknik (IDE), Halmstad Embedded and Intelligent Systems Research (EIS), Inbyggda system (CERES).
    Enhanced Wireless Sensor Network Setup Strategy Supported by Intelligent Software Agents2010Ingår i: 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, s. 813-816Konferensbidrag (Refereegranskat)
    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.

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