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  • 201. Ahlund, Claes
    Författarna och första världskriget.: De krigförande länderna och det neutrala Sverige2001In: Vänbok till Alvar Wallinder, Gävle: Högskolan i Gävle , 2001, p. 119-Chapter in book (Other academic)
  • 202. Ahlund, Claes
    Förklaringsögonblickets förvandlingar: Om Dagermans transformation av en ahlinsk epifanimodell1998In: Tidskrift för litteraturvetenskap, ISSN 1104-0556, Vol. 27, no 1, p. 25-48Article in journal (Refereed)
  • 203.
    Ahlund, Claes
    Mid Sweden University, Faculty of Human Sciences, Department of Humanities.
    Individen, nationen och romanen: Från Vilhelm Mobergs Soldat med brutet gevär till Salman Rushdies Midnight’s Children2008In: Provins, ISSN 0280-9974, no 4, p. 70-77Article in journal (Other academic)
  • 204.
    Ahlund, Claes
    Mid Sweden University, Faculty of Human Sciences, Department of Humanities.
    Kampdiktarens gränser och begränsningar: exemplet K. G. Ossiannilsson2008In: Gränser i nordisk litteratur / Borders in Nordic literature, vol. I: IASS XXVI 2006. Vol. 1 / [ed] Heidi Grönstrand & Ulrika Gustafsson, Åbo, Finland: Åbo Akademis Förlag, 2008, p. 119-126Conference paper (Refereed)
  • 205. Ahlund, Claes
    Krig och kultur i konservativ och radikal belysning: Annie Åkerhielm och Frida Stéenhoff från sekelskiftet till första världskriget2005In: Samlaren: tidskrift för svensk litteraturvetenskaplig forskning, ISSN 0348-6133, E-ISSN 2002-3871, Vol. 126, p. 97-150Article in journal (Refereed)
  • 206. Ahlund, Claes
    Medusas huvud: dekadensens tematik i svensk sekelskiftesprosa = [The head of Medusa] : [the theme of decadence in Swedish prose of the turn of the century]1994Book (Other academic)
  • 207.
    Ahlund, Claes
    Mid Sweden University, Faculty of Human Sciences, Department of Humanities.
    Om dekadensens externalisering: exemplet Bertil Malmberg2006In: Aorta : journal för retrogardistisk kultur, ISSN 1402-7984, p. 40-45Article in journal (Other scientific)
  • 208. Ahlund, Claes
    Om Kristussymboliken i Stig Dagermans Bröllopsbesvär1998In: Horisont, ISSN 0439-5530, no 1, p. 59-66Article in journal (Other academic)
  • 209. Ahlund, Claes
    Sterilitet och kysk dekadens: Sekelslut i Sverige. Tema: Fin de siècle.1993In: Allt om böcker, ISSN 0280-2260, no 5-6, p. 16-20Article in journal (Other academic)
  • 210. Ahlund, Claes
    Stig Dagerman som lyriker i "Birgitta svit"1996In: Samlaren: tidskrift, ISSN 0348-6133, Vol. 1996, p. 28-50Article in journal (Refereed)
  • 211. Ahlund, Claes
    Strindberg och sekelskiftets fysionomi: dekadens och nydaning i Götiska rummen och Svarta fanor2002In: On the threshold: new studies in Nordic literature / [ed] Janet Garton and Michael Robinson, Norwich: Norvik Press, 2002, p. 490-Chapter in book (Other academic)
  • 212.
    Ahlund, Claes
    Mid Sweden University, Faculty of Human Sciences, Department of Humanities.
    Tyrannen, riksföreståndaren och diktatorn: K. G. Ossiannilsson som fascistisk diktare2006In: Tidskrift för litteraturvetenskap, ISSN 1104-0556, no 2, p. 27-53Article in journal (Refereed)
  • 213.
    Ahlund, Claes
    Mid Sweden University, Faculty of Human Sciences, Department of Humanities.
    "Under späkelsernas gissel. Karlfeldt och kriget"2008In: Edda. Nordisk tidsskrift for litteraturforskning, ISSN 0013-0818, E-ISSN 1500-1989, Vol. 95, no 3, p. 234-248Article in journal (Refereed)
    Abstract [en]

     

    The war poetry of Erik Axel Karlfeldt (1864-1931) is a neglected part of the poet's work. The aim of this article is to discuss three poems from Flora och Bellona (1918): "Det röda korset" ("The Red Cross"), "Svart Jul" ("Black Christmas") and "En pesthymn" ("A Hymn of Pestilence"). Attention is paid to the ideological level of the poems, but also to their poetic structure. The poems are related to Peter Hallberg's discussion of Karlfeldt's archaistic imagery, to Esaias Tegnér's "Svea", but also to the contemporary political poetry of outspoken nationalists and socialists. Compared to the explicit political poetry, Karlfeldt's poetry is complex, often ambivalent in its criticism of both belligerents and alternately displaying despair and optimism. "En pesthymn" can be seen as a turning point, mirroring the outbreak in 1918 of the Finnish Civil War. In this poem, the ambivalent moral judgements of the poet's preceding war poetry are replaced by unequivocal political support for the "Whites".

     

     

     

     

  • 214. Ahlund, Claes
    et al.
    Landgren, Bengt
    Från etableringsfas till konsolidering: svensk akademisk litteraturundervisning 1890-19462003Book (Other academic)
  • 215.
    Ahlén, Emelie
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Rahmani, Shermineh
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Hur unga utlandsfödda invandrare blir bemötta i det svenska samhället.: En kvalitativ och kvantitativ studie om diskriminering och rasism2010Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Sammanfattning: Ungdomar med utländsk bakgrund har enligt tidigare studier sämre förutsättning i skolan, arbeten och inom rättsväsendet, på grund av diskriminering. Syftet med denna uppsats har varit att ta reda på hur unga utlandsfödda ungdomar blir bemötta i det svenska samhället, samt att se om det finns vissa specifika mönster till varför det uppstår diskriminering i bland annat skolan. Till vår undersökning använde vi oss av teorier om - diskriminering och rasism, som används i analysen av det empiriska materialet. Vår utgångspunkt i uppsatsen har varit att ta reda på varför diskriminering och rasism sker i samhället. Vi hade ett antal frågeställningar som kan ses nedan, som besvarats i arbetet.

    • Hur blir invandrarungdomar bemötta i det svenska samhället utifrån deras etniska bakgrund?
    • Spelar ungdomarnas genus någon roll i hur de blir bemötta i det offentliga samhället?
    • Finns det skillnader mellan ungdomar med olika bakgrund beroende på deras vilken världsdel de kommer ifrån?
    • Påverkar ungdomarnas socioekonomiska och kulturella bakgrund, hur de blir bemötta i det svenska samhället?

           För att besvara dessa frågeställningar, delade vi ut enkäter till 42 ungdomar i en mellan stor stad i åldrarna 16 – 24 år i olika skolor. När resultatet av enkäterna var sammanställda valde vi att ha en fokusgrupp med fyra deltagande som hade deltagit i enkätundersökningen. Syftet med att ha en fokusgrupp var att få en fördjupad kunskap om vissa svar kring rasism och diskriminering. Vårt resultat i studien visade att ungdomar med utländsk bakgrund, blir diskriminerade ute i samhället utav skolan, polisen, socialtjänsten, i affärer, på arbetsplatser samt på andra platser i samhället som till exempel på bussen. Dessa slutsatser stärktes och jämfördes sedan med tidigare forskning i en analysdel, samt en avslutad diskussion.

  • 216.
    Ahmad, Awais
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and System Science.
    Mozelius, Peter
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and System Science.
    Critical Factors for Human Computer Interaction of eHealth for Older Adult2019In: Proceedings of the 2019 the 5th International Conference on e-Society, e-Learning and e-Technologies, Vienna: Association for Computing Machinery (ACM), 2019, Vol. 5, p. 58-62Conference paper (Refereed)
    Abstract [en]

    The percentage of older adults increases globally with an increased need for medical care. To support the idea of successful active aging, e-health seems to be an interesting concept. This study was conducted as a systematic literature study, with the aim to identify and discuss determinant factors in the Human computer interaction of eHealth for older adults. The important main research question to answer was: What are the critical challenges to address for an improved human computer interaction in technology enhanced health care systems for older adults? Findings show that there are several critical factors to consider, with trust, personal integrity, technological acceptance, e-health literacy and accessibility of ICT as the most determinant. If the found challenges are addressed, it might be possible to achieve the identified aim of independent living. The recommendation is a human computer interaction that is elderly centred, and involves the elderly users in the design process. However, no ICT enhanced system will be user-friendly enough to take away the need for social and technological support.

  • 217.
    Ahmad, Awais
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and System Science.
    Mozelius, Peter
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and System Science.
    Ahlin, Karin
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Computer and System Science.
    Testbed requirements for technology enhanced stroke rehabilitation to support independent living2019Conference paper (Refereed)
    Abstract [en]

    An identified global phenomenon is that, as the percentage of older adults increases, new challenges arise for medical care and rehabilitation. Several research studies have presented e-health as a promising concept to support the idea of independent living among patients with chronic diseases. The Mid Sweden region has a relatively old population and is a region where people live with long distances to the nearest hospital or health care centres. This study had a focus on defining testbed requirements for a technology enhanced stroke rehabilitation adapted to the specific region. The focal research question to answer in this study was: What are the requirements and their associated benefits and barriers of using technology-enhanced systems instead of traditional techniques for stroke rehabilitation in the Mid Sweden region? With Design Science as the overall research strategy, data was collected by semi-structured interviews with key stakeholders in the field of stroke rehabilitation. A deductive thematic analysis was conducted where important themes were grouped into the four main requirement categories of: Technical, Human-computer-interaction, Clinic and Sustainability. Beside the more specific requirements, an interesting finding was the division of stroke rehabilitation into the categories motoric, cognitive and speech rehabilitation; also, how technology enhanced solutions might be used in these categories. Each category has a potential for a successful use of technology enhanced services, but as the standard procedure in traditional stroke rehabilitation each patient needs a personalised treatment.   

  • 218.
    Ahmad, Hana
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Zouari, Bouchra
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Kvinnlig köönsstympning i Sverige - En kvalitativ studie om Socialtjänstens arbete mot kvinnlig köönsstympning2016Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
  • 219.
    Ahmad, Helin
    Mid Sweden University, Faculty of Human Sciences, Department of Social Work.
    Familjebehandlingsarbete med dysfunktionella familjer och med barnet i fokus2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Studiens syfte var att undersöka och förstå vad en dysfunktionell familj är enligt familjebehandlare samt hur familjebehandlingsarbete fungerar med dysfunktionella familjer och med barnet i fokus. Studien är kvalitativ och den datainsamlingsmetod som har använts är semistrukturerade intervjuer. I studien intervjuades fem familjebehandlare. Det empiriska materialet har analyserats genom en innehållsanalys. Studiens resultat är uppdelad i tre olika teman, vilka är definition av en dysfunktionell familj, arbetsmetoder samt barns bästa. I resultatet framkom det att alla familjebehandlarna är överens om att alla familjer som de kommer i kontakt med i sitt dagliga arbete är dysfunktionella familjer. Kortfattat beskriver behandlarna att dysfunktionella familjer är familjer där något inte fungerar som det ska samt där barnet i familjen inte får sina behov tillgodosedda. Vidare i resultatet framkom det att olika typer av samtal med familjer är en mycket central arbetsmetod inom familjebehandling. I resultatet framkom det även att familjebehandlarna inte kommer i kontakt med barnet lika mycket som med föräldrarna i sitt arbete. Familjebehandlarna försöker dock vara medvetna om att det är för barnets skull som de utför sitt arbete samt att de hela tiden arbetar efter barnets behov och inte efter föräldrarnas behov.

  • 220.
    Ahmad, Jawad
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Screen Printed Large Area Sensors for Pressure Distribution Monitoring in Wheelchairs2019Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    A sedentary lifestyle can induce health related problems including pressure ulcers. Pro­longed sitting inadequacies constitute a risk for pressure ulcer to many individuals, in particular people with disabilities and re­duced mobility. The measurement of distributed pressure and detection of irregular sitting postures are essential in prevention of the risk of developing pres­sure ulcers.

    In this thesis, a screen-printed pressure sensor for a large area is presented, with the objective of measuring the distributed pressure of a seated per­son in a wheelchair. The conductors and interdigital patterns are printed with silver-based ink. A blend of a non-conductive and a low resis­tive ink is used for customized resistance for an optimal sensing range of the pressure sensor. The effect of moisture and temper­ature are realized in an environment chamber. For characterization, other key performance tests such as repeatability, drift and flexibility are carried out. The surface morphology is carried out for structural analysis of printed samples. The sensor data is acquired and processed using an 8-bit ATmega-2560 micro­controller and wirelessly transmitted to a PC for post-processing, storage and analysis. For real-time data presentation of dis­tributed pressure points, a GUI has been developed to display the values ob­tained from the large area sensor. The detection of four sit­ting pos­tures; forward leaning, backward leaning, left leaning and right leaning along with a normal sitting posture is attained. An analysis for stretchable printed tracks has been conducted to investigate the changes in electrical resistance using elon­ga­tion tests, surface morphology and EDS. The optimal curing time and tem­per­ature were investigated to manufacture stretchable conductive tracks.

    In summary, the contributions in this thesis provides an effective approach regarding pressure distribution measurement and recognizing irregular sitting postures for wheelchair users.

  • 221.
    Ahmad, Jawad
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Andersson, Henrik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Sidén, Johan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Screen Printed Piezoresistive Sensors for Monitoring Pressure Distribution in Wheelchair2019In: IEEE Sensors Journal, ISSN 1530-437X, E-ISSN 1558-1748, Vol. 19, no 6, p. 2055-2063Article in journal (Refereed)
    Abstract [en]

    Prolonged sitting inadequacies cause pressure ulcer to many individuals, especially to disadvantaged with reduced mobility. The measurement of distributed pressure and detection of irregular sitting postures is essential for preventing the risk of developing pressure ulcer. In this paper, a pressure sensing system capable of recognizing sitting postures by means of measuring interface pressure through printed pressure sensors is presented. A thin and flexible large area sensor is screen-printed using silver flake and carbon particle inks and comprises 16 sensing elements. For the evaluation of practical usability, the sensor characterization is carried out by conducting stability, repeatability, drift and bending tests. The performance of the sensor is checked under varying environmental conditions. Sitting posture detection accuracy above 80 % is achieved using a classification algorithm for four different sitting postures. Pressure distribution is monitored at a scanning rate of 10 Hz. A low power and small form factor of read-out electronics enables a compact packaging inside the seat cushion. The presented sensor design targets smart wheelchairs, but it is extendable to much larger areas, for example to be used in beds. The proposed sensing system would be of a great assistance for caregivers and health professionals.

  • 222.
    Ahmad, Jawad
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Andersson, Henrik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Sidén, Johan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Sitting Posture Recognition using Screen Printed Large Area Pressure Sensors2017In: Proceedings of IEEE Sensors, IEEE, 2017, p. 232-234Conference paper (Refereed)
    Abstract [en]

    In the biomedical sector, pressure sensors exhibit an important role towards monitoring and recognition of sitting posture for wheelchair users, which is helpful for pressure ulcer prevention and cure.  In this paper, a flexible and inexpensive screen printed large area pressure sensing system is presented. The large area sensor comprise three layers, is able to cancel-out false pressure detection, and achieves a sitting classification accuracy over 80 percent. The sensor matrix contains 16 sensors distributed over an area of 23.5 cm × 21.5 cm and the pressure points are monitored at a scanning rate of 77 Hz. The sensor system provides wireless communication and a Windows based GUI is developed that allows real-time presentation of pressure data by means of a pressure map. The presented sensor design targets smart wheelchairs but is suitable for any low cost and high throughput pressure distribution monitoring systems. 

  • 223.
    Ahmad, Jawad
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Li, Xiaotian
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Sidén, Johan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Andersson, Henrik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    An Analysis of Screen-Printed Stretchable Conductive Tracks on Thermoplastic Polyurethane2019Data set
    Abstract [en]

    The table is a result from cyclic strain test with 25 % and 50 % elongations of screen-printed stretchable conductive tracks on thermoplastic polyurethane.

  • 224.
    Ahmad, Jawad
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Li, Xiaotian
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Sidén, Johan
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Andersson, Henrik
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    An Analysis of Screen-Printed Stretchable Conductive Tracks on Thermoplastic Polyurethane2019Conference paper (Other academic)
  • 225.
    Ahmad, Naeem
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Modelling and optimization of sky surveillance visual sensor network2012Licentiate thesis, comprehensive summary (Other academic)
    Abstract [en]

    A Visual Sensor Network (VSN) is a distributed system of a largenumber of camera sensor nodes. The main components of a camera sensornode are image sensor, embedded processor, wireless transceiver and energysupply. The major difference between a VSN and an ordinary sensor networkis that a VSN generates two dimensional data in the form of an image, whichcan be exploited in many useful applications. Some of the potentialapplication examples of VSNs include environment monitoring, surveillance,structural monitoring, traffic monitoring, and industrial automation.However, the VSNs also raise new challenges. They generate large amount ofdata which require higher processing powers, large bandwidth requirementsand more energy resources but the main constraint is that the VSN nodes arelimited in these resources.This research focuses on the development of a VSN model to track thelarge birds such as Golden Eagle in the sky. The model explores a number ofcamera sensors along with optics such as lens of suitable focal length whichensures a minimum required resolution of a bird, flying at the highestaltitude. The combination of a camera sensor and a lens formulate amonitoring node. The camera node model is used to optimize the placementof the nodes for full coverage of a given area above a required lower altitude.The model also presents the solution to minimize the cost (number of sensornodes) to fully cover a given area between the two required extremes, higherand lower altitudes, in terms of camera sensor, lens focal length, camera nodeplacement and actual number of nodes for sky surveillance.The area covered by a VSN can be increased by increasing the highermonitoring altitude and/or decreasing the lower monitoring altitude.However, it also increases the cost of the VSN. The desirable objective is toincrease the covered area but decrease the cost. This objective is achieved byusing optimization techniques to design a heterogeneous VSN. The core ideais to divide a given monitoring range of altitudes into a number of sub-rangesof altitudes. The sub-ranges of monitoring altitudes are covered by individualsub VSNs, the VSN1 covers the lower sub-range of altitudes, the VSN2 coversthe next higher sub-range of altitudes and so on, such that a minimum cost isused to monitor a given area.To verify the concepts, developed to design the VSN model, and theoptimization techniques to decrease the VSN cost, the measurements areperformed with actual cameras and optics. The laptop machines are used withthe camera nodes as data storage and analysis platforms. The area coverage ismeasured at the desired lower altitude limits of homogeneous as well asheterogeneous VSNs and verified for 100% coverage. Similarly, the minimumresolution is measured at the desired higher altitude limits of homogeneous aswell as heterogeneous VSNs to ensure that the models are able to track thebird at these highest altitudes.

  • 226.
    Ahmad, Naeem
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Modelling, optimization and design of visual sensor networks for sky surveillance2013Doctoral thesis, comprehensive summary (Other academic)
  • 227.
    Ahmad, Naeem
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Imran, Muhammad
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Khursheed, Khursheed
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Lawal, Najeem
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    O'Nils, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Model, placement optimization and verification of a sky surveillance visual sensor network2013In: International Journal of Space-Based and Situated Computing (IJSSC), ISSN 2044-4893, E-ISSN 2044-4907, Vol. 3, no 3, p. 125-135Article in journal (Refereed)
    Abstract [en]

    A visual sensor network (VSN) is a distributed system of a large number of camera nodes, which generates two dimensional data. This paper presents a model of a VSN to track large birds, such as golden eagle, in the sky. The model optimises the placement of camera nodes in VSN. A camera node is modelled as a function of lens focal length and camera sensor. The VSN provides full coverage between two altitude limits. The model can be used to minimise the number of sensor nodes for any given camera sensor, by exploring the focal lengths that fulfils both the full coverage and minimum object size requirement. For the case of large bird surveillance, 100% coverage is achieved for relevant altitudes using 20 camera nodes per km² for the investigated camera sensors. A real VSN is designed and measurements of VSN parameters are performed. The results obtained verify the VSN model.

  • 228.
    Ahmad, Naeem
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Imran, Muhammad
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Khursheed, Khursheed
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Lawal, Najeem
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    O'Nils, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Solution space exploration of volumetric surveillance using a general taxonomy2013In: Proceedings of SPIE - The International Society for Optical Engineering / [ed] Daniel J. Henry, 2013, p. Art. no. 871317-Conference paper (Refereed)
    Abstract [en]

    Visual surveillance systems provide real time monitoring of the events or the environment. The availability of low cost sensors and processors has increased the number of possible applications of these kinds of systems. However, designing an optimized visual surveillance system for a given application is a challenging task, which often becomes a unique design task for each system. Moreover, the choice of components for a given surveillance application out of a wide spectrum of available alternatives is not an easy job. In this paper, we propose to use a general surveillance taxonomy as a base to structure the analysis and development of surveillance systems. We demonstrate the proposed taxonomy for designing a volumetric surveillance system for monitoring the movement of eagles in wind parks aiming to avoid their collision with wind mills. The analysis of the problem is performed based on taxonomy and behavioral and implementation models are identified to formulate the solution space for the problem. Moreover, we show that there is a need for generalized volumetric optimization methods for camera deployment.

  • 229.
    Ahmad, Naeem
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Khursheed, Khursheed
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Imran, Muhammad
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Lawal, Najeem
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    O'Nils, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Cost Optimization of a Sky Surveillance Visual Sensor Network2012In: Proceedings of SPIE - The International Society for Optical Engineering, Belgium: SPIE - International Society for Optical Engineering, 2012, p. Art. no. 84370U-Conference paper (Refereed)
    Abstract [en]

    A Visual Sensor Network (VSN) is a network of spatially distributed cameras. The primary difference between VSN and other type of sensor network is the nature and volume of information. A VSN generally consists of cameras, communication, storage and central computer, where image data from multiple cameras is processed and fused. In this paper, we use optimization techniques to reduce the cost as derived by a model of a VSN to track large birds, such as Golden Eagle, in the sky. The core idea is to divide a given monitoring range of altitudes into a number of sub-ranges of altitudes. The sub-ranges of altitudes are monitored by individual VSNs, VSN1 monitors lower range, VSN2 monitors next higher and so on, such that a minimum cost is used to monitor a given area. The VSNs may use similar or different types of cameras but different optical components, thus, forming a heterogeneous network.  We have calculated the cost required to cover a given area by considering an altitudes range as single element and also by dividing it into sub-ranges. To cover a given area with given altitudes range, with a single VSN requires 694 camera nodes in comparison to dividing this range into sub-ranges of altitudes, which requires only 96 nodes, which is 86% reduction in the cost.

  • 230.
    Ahmad, Naeem
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Khursheed, Khursheed
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Imran, Muhammad
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Lawal, Najeem
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    O'Nils, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Modeling and Verification of a Heterogeneous Sky Surveillance Visual Sensor Network2013In: International Journal of Distributed Sensor Networks, ISSN 1550-1329, E-ISSN 1550-1477, p. Art. id. 490489-Article in journal (Refereed)
    Abstract [en]

    A visual sensor network (VSN) is a distributed system of a large number of camera nodes and has useful applications in many areas. The primary difference between a VSN and an ordinary scalar sensor network is the nature and volume of the information. In contrast to scalar sensor networks, a VSN generates two-dimensional data in the form of images. In this paper, we design a heterogeneous VSN to reduce the implementation cost required for the surveillance of a given area between two altitude limits. The VSN is designed by combining three sub-VSNs, which results in a heterogeneous VSN. Measurements are performed to verify full coverage and minimum achieved object image resolution at the lower and higher altitudes, respectively, for each sub-VSN. Verification of the sub-VSNs also verifies the full coverage of the heterogeneous VSN, between the given altitudes limits. Results show that the heterogeneous VSN is very effective to decrease the implementation cost required for the coverage of a given area. More than 70% decrease in cost is achieved by using a heterogeneous VSN to cover a given area, in comparison to homogeneous VSN. © 2013 Naeem Ahmad et al.

  • 231.
    Ahmad, Naeem
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Lawal, Najeem
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    O'Nils, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Oelmann, Bengt
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Imran, Muhammad
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Khursheed, Khursheed
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
    Model and placement optimization of a sky surveillance visual sensor network2011In: Proceedings - 2011 International Conference on Broadband and Wireless Computing, Communication and Applications, BWCCA 2011, IEEE Computer Society, 2011, p. 357-362Conference paper (Refereed)
    Abstract [en]

    Visual Sensor Networks (VSNs) are networks which generate two dimensional data. The major difference between VSN and ordinary sensor network is the large amount of data. In VSN, a large number of camera nodes form a distributed system which can be deployed in many potential applications. In this paper we present a model of the physical parameters of a visual sensor network to track large birds, such as Golden Eagle, in the sky. The developed model is used to optimize the placement of the camera nodes in the VSN. A camera node is modeled as a function of its field of view, which is derived by the combination of the lens focal length and camera sensor. From the field of view and resolution of the sensor, a model for full coverage between two altitude limits has been developed. We show that the model can be used to minimize the number of sensor nodes for any given camera sensor, by exploring the focal lengths that both give full coverage and meet the minimum object size requirement. For the case of large bird surveillance we achieve 100% coverage for relevant altitudes using 20 camera nodes per km2 for the investigated camera sensors.

  • 232.
    Ahmad, Naeem
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    O'Nils, Mattias
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Lawal, Najeem
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    A taxonomy of visual surveillance systems2013Report (Other academic)
    Abstract [en]

    The increased security risk in society and the availability of low cost sensors and processors has expedited the research in surveillance systems. Visual surveillance systems provide real time monitoring of the environment. Designing an optimized surveillance system for a given application is a challenging task. Moreover, the choice of components for a given surveillance application out of a wide spectrum of available products is not an easy job.

     

    In this report, we formulate a taxonomy to ease the design and classification of surveillance systems by combining their main features. The taxonomy is based on three main models: behavioral model, implementation model, and actuation model. The behavioral model helps to understand the behavior of a surveillance problem. The model is a set of functions such as detection, positioning, identification, tracking, and content handling. The behavioral model can be used to pinpoint the functions which are necessary for a particular situation. The implementation model structures the decisions which are necessary to implement the surveillance functions, recognized by the behavioral model. It is a set of constructs such as sensor type, node connectivity and node fixture. The actuation model is responsible for taking precautionary measures when a surveillance system detects some abnormal situation.

     

    A number of surveillance systems are investigated and analyzed on the basis of developed taxonomy. The taxonomy is general enough to handle a vast range of surveillance systems. It has organized the core features of surveillance systems at one place. It may be considered an important tool when designing surveillance systems. The designers can use this tool to design surveillance systems with reduced effort, cost, and time.

  • 233.
    Ahmad, Nisar
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Electronics Design.
    Design and Implementation of a High Frequency Flyback Converter2014Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The power supply designers choose flyback topology due to its promising features of design simplicity, cost effectiveness and multiple outputs handling capability. The designed product based on flyback topology should be smaller in size, cost effective and energy efficient. Similarly, designers focus on reducing the circuit losses while operating at high frequencies that affect the converter efficiency and performance. Based on the above circumstances, an energy efficient open loop high frequency flyback converter is designed and operated in MHz frequency region using step down multilayer PCB planar transformer. The maximum efficiency of 84.75% is observed and maximum output power level reached is 22.8W. To overcome the switching losses, quasi-resonant soft switching technique is adopted and a high voltage CoolMOS power transistor is used.

  • 234.
    Ahmad, Shabir
    et al.
    Jeju National University, Jeju, South Korea.
    Hussain, Ishfaq
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Fayaz, Muhammad
    Jeju National University, Jeju, South Korea.
    Kim, Do-Hyeun
    Jeju National University, Jeju, South Korea.
    A Distributed Approach towards Improved Dissemination Protocol for Smooth Handover in MediaSense IoT Platform2018In: Processes, ISSN 2227-9717, E-ISSN 1099-5862, Vol. 6, no 5, article id 46Article in journal (Refereed)
    Abstract [en]

    Recently, the Internet has been utilized by many applications to convey time-sensitive messages. The persistently expanding Internet coverage and its easy accessibility have offered to ascend to a problem which was once regarded as not essential to contemplate. Nowadays, the Internet has been utilized by many applications to convey time-sensitive messages. Wireless access points have widely been used but these access points have limitations regarding area coverage. So for covering a wider space, various access points need to be introduced. Therefore, when the user moves to some other place, the devices expected to switch between access points. Packet loss amid the handovers is a trivial issue. MediaSense is an Internet of Things distributed architecture enabling the development of the IoT application faster. It deals with this trivial handover issue by utilizing a protocol called Distributed Context eXchange Protocol. However, this protocol is centralized in nature and also suffers in a scenario when both sender and receiver address change simultaneously. This paper presents a mechanism to deal with this scenario and presents a distributed solution to deal with this issue within the MediaSense platform. The proposed protocol improves dissemination using retransmission mechanism to diminish packet loss. The proposed protocol has been delineated with a proof of concept chat application and the outcomes have indicated a significant improvement in terms of packet loss.

  • 235.
    Ahmad, Waqas
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Olsson, Roger
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Sjöström, Mårten
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Interpreting Plenoptic Images as Multi-View Sequences for Improved Compression2017Data set
    Abstract [en]

    The paper is written in the response to ICIP 2017, Grand challenge on plenoptic image compression. The input image format and compression rates set out by the competition are followed to estimate the results.

  • 236.
    Ahmad, Waqas
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Olsson, Roger
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Sjöström, Mårten
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Interpreting Plenoptic Images as Multi-View Sequences for Improved Compression2017In: ICIP 2017, IEEE, 2017, p. 4557-4561Conference paper (Refereed)
    Abstract [en]

    Over the last decade, advancements in optical devices have made it possible for new novel image acquisition technologies to appear. Angular information for each spatial point is acquired in addition to the spatial information of the scene that enables 3D scene reconstruction and various post-processing effects. Current generation of plenoptic cameras spatially multiplex the angular information, which implies an increase in image resolution to retain the level of spatial information gathered by conventional cameras. In this work, the resulting plenoptic image is interpreted as a multi-view sequence that is efficiently compressed using the multi-view extension of high efficiency video coding (MV-HEVC). A novel two dimensional weighted prediction and rate allocation scheme is proposed to adopt the HEVC compression structure to the plenoptic image properties. The proposed coding approach is a response to ICIP 2017 Grand Challenge: Light field Image Coding. The proposed scheme outperforms all ICME contestants, and improves on the JPEG-anchor of ICME with an average PSNR gain of 7.5 dB and the HEVC-anchor of ICIP 2017 Grand Challenge with an average PSNR gain of 2.4 dB.

  • 237.
    Ahmad, Waqas
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Olsson, Roger
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Sjöström, Mårten
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Towards a generic compression solution for densely and sparsely sampled light field data2018In: Proceedings of 25TH IEEE International Conference On Image Processing, 2018, p. 654-658, article id 8451051Conference paper (Refereed)
    Abstract [en]

    Light field (LF) acquisition technologies capture the spatial and angular information present in scenes. The angular information paves the way for various post-processing applications such as scene reconstruction, refocusing, and synthetic aperture. The light field is usually captured by a single plenoptic camera or by multiple traditional cameras. The former captures a dense LF, while the latter captures a sparse LF. This paper presents a generic compression scheme that efficiently compresses both densely and sparsely sampled LFs. A plenoptic image is converted into sub-aperture images, and each sub-aperture image is interpreted as a frame of a multiview sequence. In comparison, each view of the multi-camera system is treated as a frame of a multi-view sequence. The multi-view extension of high efficiency video coding (MVHEVC) is used to encode the pseudo multi-view sequence.This paper proposes an adaptive prediction and rate allocation scheme that efficiently compresses LF data irrespective of the acquisition technology used.

  • 238.
    Ahmad, Waqas
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Palmieri, Luca
    Christian-Albrechts-Universität, Kiel, Germany.
    Koch, Reinhard
    Christian-Albrechts-Universität, Kiel, Germany.
    Sjöström, Mårten
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Matching Light Field Datasets From Plenoptic Cameras 1.0 And 2.02018In: Proceedings of the 2018 3DTV Conference, 2018, article id 8478611Conference paper (Refereed)
    Abstract [en]

    The capturing of angular and spatial information of the scene using single camera is made possible by new emerging technology referred to as plenoptic camera. Both angular and spatial information, enable various post-processing applications, e.g. refocusing, synthetic aperture, super-resolution, and 3D scene reconstruction. In the past, multiple traditional cameras were used to capture the angular and spatial information of the scene. However, recently with the advancement in optical technology, plenoptic cameras have been introduced to capture the scene information. In a plenoptic camera, a lenslet array is placed between the main lens and the image sensor that allows multiplexing of the spatial and angular information onto a single image, also referred to as plenoptic image. The placement of the lenslet array relative to the main lens and the image sensor, results in two different optical design sof a plenoptic camera, also referred to as plenoptic 1.0 and plenoptic 2.0. In this work, we present a novel dataset captured with plenoptic 1.0 (Lytro Illum) and plenoptic 2.0(Raytrix R29) cameras for the same scenes under the same conditions. The dataset provides the benchmark contents for various research and development activities for plenoptic images.

  • 239.
    Ahmad, Waqas
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Palmieri, Luca
    University of Padova, Italy.
    Koch, Reinhard
    Christian-Albrechts-University of Kiel, Germany.
    Sjöström, Mårten
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    The Plenoptic Dataset2018Data set
    Abstract [en]

    The dataset is captured using two different plenoptic cameras, namely Illum from Lytro (based on plenoptic 1.0 model) and R29 from Raytrix (based on plenoptic 2.0 model). The scenes selected for the dataset were captured under controlled conditions. The cameras were mounted onto a multi-camera rig that was mechanically controlled to move the cameras with millimeter precision. In this way, both cameras captured the scene from the same viewpoint.

  • 240.
    Ahmad, Waqas
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Sjöström, Mårten
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Olsson, Roger
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Compression scheme for sparsely sampled light field data based on pseudo multi-view sequences2018In: OPTICS, PHOTONICS, AND DIGITAL TECHNOLOGIES FOR IMAGING APPLICATIONS V Proceedings of SPIE - The International Society for Optical Engineering, SPIE - International Society for Optical Engineering, 2018, Vol. 10679, article id 106790MConference paper (Refereed)
    Abstract [en]

    With the advent of light field acquisition technologies, the captured information of the scene is enriched by having both angular and spatial information. The captured information provides additional capabilities in the post processing stage, e.g. refocusing, 3D scene reconstruction, synthetic aperture etc. Light field capturing devices are classified in two categories. In the first category, a single plenoptic camera is used to capture a densely sampled light field, and in second category, multiple traditional cameras are used to capture a sparsely sampled light field. In both cases, the size of captured data increases with the additional angular information. The recent call for proposal related to compression of light field data by JPEG, also called “JPEG Pleno”, reflects the need of a new and efficient light field compression solution. In this paper, we propose a compression solution for sparsely sampled light field data. In a multi-camera system, each view depicts the scene from a single perspective. We propose to interpret each single view as a frame of pseudo video sequence. In this way, complete MxN views of multi-camera system are treated as M pseudo video sequences, where each pseudo video sequence contains N frames. The central pseudo video sequence is taken as base View and first frame in all the pseudo video sequences is taken as base Picture Order Count (POC). The frame contained in base view and base POC is labeled as base frame. The remaining frames are divided into three predictor levels. Frames placed in each successive level can take prediction from previously encoded frames. However, the frames assigned with last prediction level are not used for prediction of other frames. Moreover, the rate-allocation for each frame is performed by taking into account its predictor level, its frame distance and view wise decoding distance relative to the base frame. The multi-view extension of high efficiency video coding (MV-HEVC) is used to compress the pseudo multi-view sequences. The MV-HEVC compression standard enables the frames to take prediction in both direction (horizontal and vertical d), and MV-HEVC parameters are used to implement the proposed 2D prediction and rate allocation scheme. A subset of four light field images from Stanford dataset are compressed, using the proposed compression scheme on four bitrates in order to cover the low to high bit-rates scenarios. The comparison is made with state-of-art reference encoder HEVC and its real-time implementation X265. The 17x17 grid is converted into a single pseudo sequence of 289 frames by following the order explained in JPEG Pleno call for proposal and given as input to the both reference schemes. The rate distortion analysis shows that the proposed compression scheme outperforms both reference schemes in all tested bitrate scenarios for all test images. The average BD-PSNR gain is 1.36 dB over HEVC and 2.15 dB over X265.

  • 241.
    Ahmad, Waqas
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Vagharshakyan, Suren
    Tampere University of Technology, Finland.
    Sjöström, Mårten
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Gotchev, Atanas
    Tampere University of Technology, Finland.
    Bregovic, Robert
    Tampere University of Technology, Finland.
    Olsson, Roger
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Systems and Technology.
    Shearlet Transform Based Prediction Scheme for Light Field Compression2018Conference paper (Refereed)
    Abstract [en]

    Light field acquisition technologies capture angular and spatial information ofthe scene. The spatial and angular information enables various post processingapplications, e.g. 3D scene reconstruction, refocusing, synthetic aperture etc at theexpense of an increased data size. In this paper, we present a novel prediction tool forcompression of light field data acquired with multiple camera system. The captured lightfield (LF) can be described using two plane parametrization as, L(u, v, s, t), where (u, v)represents each view image plane coordinates and (s, t) represents the coordinates of thecapturing plane. In the proposed scheme, the captured LF is uniformly decimated by afactor d in both directions (in s and t coordinates), resulting in a sparse set of views alsoreferred to as key views. The key views are converted into a pseudo video sequence andcompressed using high efficiency video coding (HEVC). The shearlet transform basedreconstruction approach, presented in [1], is used at the decoder side to predict thedecimated views with the help of the key views.Four LF images (Truck, Bunny from Stanford dataset, Set2 and Set9 from High DensityCamera Array dataset) are used in the experiments. Input LF views are converted into apseudo video sequence and compressed with HEVC to serve as anchor. Rate distortionanalysis shows the average PSNR gain of 0.98 dB over the anchor scheme. Moreover, inlow bit-rates, the compression efficiency of the proposed scheme is higher compared tothe anchor and on the other hand the performance of the anchor is better in high bit-rates.Different compression response of the proposed and anchor scheme is a consequence oftheir utilization of input information. In the high bit-rate scenario, high quality residualinformation enables the anchor to achieve efficient compression. On the contrary, theshearlet transform relies on key views to predict the decimated views withoutincorporating residual information. Hence, it has inherit reconstruction error. In the lowbit-rate scenario, the bit budget of the proposed compression scheme allows the encoderto achieve high quality for the key views. The HEVC anchor scheme distributes the samebit budget among all the input LF views that results in degradation of the overall visualquality. The sensitivity of human vision system toward compression artifacts in low-bitratecases favours the proposed compression scheme over the anchor scheme.

  • 242.
    Ahmed, Hashi
    et al.
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Media and Communication Science.
    Bergström, Christian
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Media and Communication Science.
    Sjölén, Felix
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Media and Communication Science.
    Vikten av lokala nyhetsmedier för lokalpolitiska intresset - En jämförande studie av tre fokusgruppers uppfattningar2018Independent thesis Basic level (university diploma), 5 credits / 7,5 HE creditsStudent thesis
  • 243.
    Ahmed, Leila
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Hälsofrämjande ledarskap ur anställdas perspektiv: - En kvalitativ intervjustudie2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 244.
    Ahmed, Lisa
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Mathematics and Science Education. Mid Sweden University, Faculty of Science, Technology and Media, Department of Mathematics and Science Education.
    Betydelsen av elevers sociala relationer för att må bra i skolan2019Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Avsikten med min studie är att veta hur sociala relationer stimulerar elever att må bra i skolan. Hur lärare och elevhälsoteam ser på sociala relationens betydelse för elevers välmående i skolan. Lärare och elevhälsoteam samarbetar i skolan för elevers välmående, men vilka hinder ser de för att utveckla elevers sociala relationer. För detta syfte har jag intervjuat ett antal lärare och kuratorer om deras arbetssätt, hur de planerar för en undervisning som bygger på sociala relationer, hur sociala relationer och elevhälsa förhåller sig till varandra enligt dem. Samtidigt har jag undersökt vilka hinder som de ser till att utveckla elevers sociala relationer samt hur de ser på vårdnadshavarens roll här.

    Det resultatet som jag ser i min studie är att i huvudsak anser samtliga pedagoger och kuratorer att sociala relationer har en avgörande roll i elevers välmående i skolan. Samtliga informanter tycker att elever som har bra sociala färdigheter mår bra både fysiskt och psykiskt och i sin tur lyckas bra i skolarbetet. De anser också att ett starkt samarbete mellan pedagoger, elevhälsoteam och hem är väldigt viktigt för att utveckla elevers sociala färdigheter. De tycker att om samarbetet mellan parter fungerar bra då elever känner sig trygga i skolan. Resultatet blir att elever som kan skapa en bärande relation både med vuxna och andra kompisar, blir även motiverade i skolarbetet och lyckas i skolan.

  • 245.
    Ahmed, Lisa
    Mid Sweden University, Faculty of Science, Technology and Media, Department of Science Education and Mathematics.
    Lärarstyrd lek i matematikundervisningen: Dess möjligheter och begränsningar för elevens lärande.2018Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Avsikten med min studie är att veta hur lärarstyrd lek påverkar matematikundervisningen samt se vilka möjligheter och begränsningar som metoden lärarstyrd lek har. För detta syfte har jag intervjuat ett antal lärare om detta arbetssätt, hur de planerar för en undervisning som bygger på lärarstyrd lek, vad de menar med lärarstyrd lek, vilka möjligheter och begränsningar de ser samt om de märker att de stimulerar eleven i matematikundervisningen med den lärarstyrda leken.Det resultatet som jag ser i min studie är att i huvudsak anser samtliga pedagoger att det finns en positiv påverkan på lärandet när lärarstyrd lek genomförs i undervisningen. De pekar på några begränsande faktorer som tidsbrist, höga arbetsbelastning, problem med elevers sociala sampel. Trots att arbetssättet möter vissa utmaningar så bedömer samtliga pedagoger att lärarstyrd lek i matematikundervisningen ökar elevens motivation i lärandet och gör ämnet roligt och intressant.

  • 246.
    Ahmed Nur, Leila
    et al.
    Mid Sweden University, Faculty of Human Sciences, Department of Psychology and Social Work.
    Sorani, Lona
    Mid Sweden University, Faculty of Human Sciences, Department of Psychology and Social Work.
    Grannskapets påverkan på gymnasieskolan: En kvalitativ studie om marginaliserade elevers uppleverser av gymnasieskolan och sina förväntningar inför framtida utbildningsmöjligheter2019Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study intends to review existing correlations between marginalized adolescents and lower school results. This study examines underlying conditions for the current residential segregation in Sweden by applying segregation as a theory adequate to a qualitative study. Residential segregation has generated negative effects on the Swedish school system as a result. Previous research regarding the subject points toward residential segregation as a prime cause for the performance gap within the Swedish school system. It also conditions the qualifications of young adolescents regarding their pursuit of future opportunities. The youth's perception of their school attendance is inspected through an analysis divided into three themes regarding their experiences in relation to their residential areas. This study argues that existing social exclusion processes caused by residential segregation, affect how they perceive their opportunities. A typical disjunct resource allocations on the basis of socioeconomic status characterizes the means that marginalized adolescents possess to pursue their ambitions.

  • 247.
    Ahmed Shire, F Sagal
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences.
    Healthcare professional´s experience of promoting maternal mental health: a qualitative study in Saudi Arabia.2015Independent thesis Advanced level (degree of Master (Two Years)), 10 credits / 15 HE creditsStudent thesis
  • 248.
    Ahmetgjekaj, Fatmir
    Mid Sweden University, Faculty of Human Sciences, Department of Humanities.
    New age i massmediernas tid och rum2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 249.
    Ahnelöv, Malin
    Mid Sweden University, Faculty of Human Sciences, Department of Tourism Studies and Geography.
    När millenniegenerationen väljer Airbnb: En kvalitativ fallstudie av Stockholm2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
  • 250.
    Ahokas, Essi K.
    et al.
    University of Jyväskylä, Jyväskylä, Finland.
    Ihalainen, Johanna K.
    Mid Sweden University, Faculty of Human Sciences, Department of Health Sciences. University of Jyväskylä, Jyväskylä, Finland.
    Kyröläinen, Heikki
    University of Jyväskylä, Jyväskylä, Finland.
    Mero, Antti A.
    University of Jyväskylä, Jyväskylä, Finland.
    Effects of Water Immersion Methods on Postexercise Recovery of Physical and Mental Performance2019In: Journal of Strength and Conditioning Research, ISSN 1064-8011, E-ISSN 1533-4287, Vol. 33, no 6, p. 1488-1495Article in journal (Refereed)
    Abstract [en]

    The aim of this study was to compare the effectiveness of 3 water immersion interventions performed after active recovery compared with active recovery only on physical and mental performance measures and physiological responses. The subjects were physically active men (age 20-35 years, mean ± SD 26 ± 3.7 years). All subjects performed a short-term exercise protocol, including maximal jumps and sprinting. Four different recovery methods (10 minutes) were used in random order: cold water immersion (CWI, 10° C), thermoneutral water immersion (TWI, 24° C), and contrast water therapy (CWT, alternately 10° C and 38° C). All these methods were performed after an active recovery (10-minute bicycle ergometer; heart rate [HR] 120-140 b·min, 60-73% from age-calculated maximum HR), and the fourth method was active recovery (ACT) only. Within 96 hours after exercise bouts, recovery was assessed through a 30-m maximal sprint test, maximal countermovement jump (CMJ), self-perceived muscle soreness and relaxation questionnaires, and blood lactate, creatine kinase, testosterone, cortisol, and catecholamine levels. The self-perceived feeling of relaxation after 60-minute recovery was better (p < 0.05) after CWI and CWT than ACT and TWI. Statistically significant differences were not observed between the recovery methods in any other marker. In the 30-m sprint test, however, slower running time was found in ACT (p < 0.001) and CWT (p = 0.005), and reduced CMJ results (p < 0.05) were found in ACT when the results were compared with baseline values. Based on these findings, it can be concluded that CWI and CWT improve the acute feeling of relaxation that can play a positive role in athletes' performance and well-being.

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