Change search
Refine search result
104105106107108109110 5301 - 5350 of 13555
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 5301.
    Holmqvist, Johan
    et al.
    Luleå tekniska universitet.
    Wenngren, Johan
    Luleå tekniska universitet.
    Ericson, Åsa
    Luleå tekniska universitet.
    Johansson, Christian
    Luleå tekniska universitet.
    Thor, Peter
    Luleå tekniska universitet.
    Sharing expertise: Easier said than done2011In: Functional thinking for value creation: Proceedings of the 3rd CIRP International Conference on Industrial Product Service Systems, Technische Universität Braunschweig, Braunschweig, Germany / [ed] Jürgen Hesselbach, Christoph Herrmann, Berlin: Springer Berlin/Heidelberg, 2011, Vol. 3, p. 201-206Conference paper (Refereed)
    Abstract [en]

    Manufacturing industry is expressing an increased interest in knowledge management due to the extension towards aservice provision business model. However, the inclusion of softer service aspects indicates that the common view onknowledge management as a way to control and monitor a technical process have limitations. Sharing expertise is anadditional way of managing knowledge particularly with the intentions to make experience based knowledgeorganizational available. By studying product developers’ daily work, especially how they perceive that they apply andshare knowledge, we problematize knowledge activities in product-service development to discuss the establishedknowledge management activities. The paper suggests some considerations to support the development of aknowledge base for product-service design.

  • 5302.
    Holmqvist, Lucas
    et al.
    Blekinge Institute of Technology, Faculty of Computing, Department of Creative Technologies.
    Ahlström, Eric
    Blekinge Institute of Technology, Faculty of Computing, Department of Creative Technologies.
    Comparing Traditional Key Frame Animation Approach and Hybrid Animation Approach of Humanoid Characters2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
  • 5303.
    Holmstedt, Louise
    et al.
    KTH, SWE.
    Brandt, Nils
    KTH, SWE.
    Robèrt, Karl Henrik
    Blekinge Institute of Technology, Faculty of Engineering, Department of Strategic Sustainable Development.
    Can Stockholm Royal Seaport be part of the puzzle towards global sustainability?: From local to global sustainability using the same set of criteria2017In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 140, no Part 1, p. 72-80Article in journal (Refereed)
    Abstract [en]

    Urban sustainable development is today seen as one of the keys towards unlocking the quest for a sustainable world. One feature of urban sustainability is the increased interest in developing sustainable urban districts. For many of these developments, guiding sustainability documents are developed to frame future goals. However, few of these documents specify on which grounds they determine the sustainability of goals and they are largely developed as independent islands of local sustainability. This is unfortunate as cities and their districts are fully dependent on surrounding environments. Failing to include a holistic approach into the local planning increases the risk of sub-optimisation, future lock-ins and missed targets on a higher level. The aim of this study is to analyse whether the environmental and sustainability programme for Stockholm Royal Seaport, a new urban district in Stockholm, Sweden, can guide development of the district towards holistic ecological sustainability. By using the Framework for Strategic Sustainable Development a holistic template for an ecologically sustainable planet has been described, important sectors for the built environment have been identified and the environmental and sustainability programme for the district has been analysed. This study showed that the vision and operational goals put forward in the Stockholm Royal Seaport programme complies relatively well with the designed template. However, important deviations in all sectors but land use have been identified. These deviations arise in the translation process between theory and practice. The vision for the district and the implementation phase are not aligned due to too narrow a perspective of a sustainable urban district, lack of robust sustainability principles including use of such to identify key strategic questions. In addition to the lack of an all-embracing conceptual framework, there is also a lack of structures for cooperation between stakeholders and conflicts between local and regional agendas. Use of a unifying framework can describe desirable future scenarios where the local level does not contribute to violation of the universal sustainability principles and identify step-wise routes towards such scenarios. © 2016 Elsevier Ltd

  • 5304.
    Holmström, Amanda
    et al.
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    Berglund, Agnes
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    Sjuksköterskestudenters sunda levnadsvanor med fokus på fysisk aktivitet och inställning till hälsofrämjande arbete: En enkätstudie2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Bakgrund: Sjuksköterskan ska främja och återställa hälsa genom bland annat uppmuntran till sunda levnadsvanor genom rådgivande hälsosamtal. En av de levnadsvanor som bidrar till för tidig död är otillräcklig fysisk aktivitet, vilken står för 5,5% av sjukdomsbördan i Europa. För att sjuksköterskan ska kunna bedriva god vård och hälsofrämjande omvårdnad bör även sjuksköterskan ha sunda levnadsvanor och god hälsa. Syfte: Undersöka sjuksköterskestudenters sunda levnadsvanor med fokus på fysisk aktivitet samt deras inställning till det hälsofrämjande arbetet gällande fysisk aktivitet med målet att upprätthålla god hälsa. Metod: Enkätstudie av tvärsnittstyp med kvantitativ ansats baserad på en egenkonstruerad enkät. Urvalet bestod av sjuksköterskestudenter på ett lärosäte i södra Sverige och resultatet bygger på de 44 studenter som valde att svara på enkäten. Resultat: Resultatet presenteras med kategorierna BMI-fördelning, Hälsosam och sund livsstil, Hälsofrämjande arbete och Fysisk aktivitet. Cirka två tredjedelar av respondenterna hade enligt BMI normalvikt och majoriteten uppfyllde rekommendationer för deltagande i fysisk aktivitet. Respondenterna hade positiv inställning till sin egen livsstil och hur viktigt det är att leva ett hälsosamt och sunt liv. Drygt fyra femtedelar av respondenterna ansåg att Hälso- och sjukvården i hög/mycket hög utsträckning bör ställa krav på befolkningen gällande regelbunden fysisk aktivitet. Endast fyra respondenter ansåg att hälsosamtal inte är självklart vid kontakt med Hälso- och sjukvård. Majoriteten av respondenterna ansåg att de i hög utsträckning hade förmåga att föra ett hälsosamtal om fysisk aktivitet. Slutsats: Inställningen av hälsosam och sund livsstil speglas inte i sjuksköterskestudenternas BMI utan i deltagande i fysisk aktivitet. Fortsatta studier om sambandet mellan BMI och andra levnadsvanor hade bidragit till en större förståelse för detta. Hälsosamtal ansågs inte som självklart vid kontakt med Hälso- och sjukvården för alla sjuksköterskestudenter och inte heller att det var Hälso- och sjukvårdens angelägenhet att ställa krav på befolkningens hälsosamma liv. Då detta är en del av Hälso- och sjukvårdens skyldigheter bör mer konkreta studier om det faktiska utövandet göras för kartläggning av om de personliga åsikterna påverkar det hälsofrämjande arbetet.

  • 5305.
    Holmåker, Markus
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Systems and Software Engineering.
    Woxblom, Magnus
    Blekinge Institute of Technology, School of Engineering, Department of Systems and Software Engineering.
    Performance evaluation of the fixed function pipeline and the programmable pipeline2004Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    When developing applications in Direct3D today, developers can choose between using the fixed function pipeline and the programmable pipeline. The programmable pipeline is more flexible than the fixed function pipeline, but what is the price for high flexibility? Is high flexibility desired at any cost? How is the choice of pipeline affecting performance? The purpose of this master thesis is to evaluate the performance of the two pipelines. This will be achieved by developing a benchmark program, which measures performance when various graphical effects are tested. The results of the evaluation will hopefully help developers to decide which pipeline to use, in terms of performance. In the end we will see that the fixed function pipeline is faster than the programmable pipeline in all our tests.

  • 5306. Holopainen, Jussi
    Foundations of Gameplay2011Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    People in all known cultures play games and today digital gaming is an important leisure activity for hundreds of millions of people. At the same time game design has developed into a profession of its own. There are several practical game design guidelines and text books but they rarely manage to connect their findings into relevant areas of research such as psychology and design research. Understanding game design, both as an activity and as an end result of that activity, in a more profound way could alleviate this problem. The main goals of this thesis are to understand in a more profound way how to design games and based on that understanding develop frameworks and methods for aiding game design. By extending knowledge about game design can not only improve the quality of the end-products but also expand the potential design space even in unpredictable ways. Game design contains many sub-areas. Character, story, and environment design are integral parts of the current game development projects. The aim of this thesis, however, is to have a critical and exploratory look at structures of gameplay as design material. Gameplay is the interaction between the game rules, challenges, elements, and players.In one sense gameplay defines the game. The focus of the thesis is mainly analytical, although parts of the results are based on practical research through design activities. The thesis contributes to game research in three interralated ways: (1) An analytical contribution to understanding gameplay was done in the gameplay design patterns work. The patterns are described as an approach to both analyse existing games and aid in designing new games. The patterns describe recurrent gameplay and also analyse these structures from the design material point of view. (2) A theoretical study of basis for gameplay experiences was conducted through review of relevant models and theories in neuroaesthetics, cognitive and social psychology and game research. The framework offered in the thesis explains why certain gameplay structures are more recurrent based on defining gameplay as caricatures of intentional behaviour. (3) The game design patterns approach and research through design projects have contributed to the analysis of game design as an activity and practical guidelines for concrete design work in more specific areas of game design. The goals of this thesis are ambitious and many questions are left unanswered. Using the patterns approach in conjunction with game design and ideation methods is still in its infancy. The concept of gameplay as caricatures of intentional behaviour should be explored further, especially in conjunction with other theories and frameworks relevant for understanding gameplay experience such as user engagement, immersion, and presence. Empirical experiments validating or falsifying this view on gameplay would be valuable as further contributions to game research.

  • 5307.
    Holst, Adelheid
    et al.
    Faculty of Professional Studies Nord University Bodø, NOR.
    Skär, Lisa
    Blekinge Institute of Technology, Faculty of Engineering, Department of Health.
    Formal caregivers' experiences of aggressive behaviour in older people living with dementia in nursing homes: A systematic review2017In: International Journal of Older People Nursing, ISSN 1748-3735, E-ISSN 1748-3743, Vol. 12, no 4, article id e12158Article in journal (Refereed)
    Abstract [en]

    Aim: The purpose of this study was to investigate formal caregivers' experiences of aggressive behaviour in older people living with dementia in nursing homes. Background: Aggressive behaviour symptoms among older people living with dementia are reported to be prevalent. As aggressive behaviour includes both verbal and physical behaviours, such as kicking, hitting and screaming, it causes an increased burden on formal caregivers. Professionals experiencing this aggression perceived it as challenging, causing physical and psychological damage, leading to anger, stress and depression. Methods: A systematic review was conducted. A search of published research studies between 2000 and 2015 was conducted using appropriate search terms. Eleven studies were identified and included in this review. Results: The analysis resulted in four categories: formal caregivers' views on triggers of aggression, expressions of aggression, the effect of aggressive behaviours on formal caregivers and formal caregivers' strategies to address aggression. The results show that aggressive behaviour may lead to negative feelings in formal caregivers and nursing home residents. Conclusion: The results of this study suggest that having the ability to identify triggers possibly assists caregivers with addressing aggressive behaviour. Aggressive behaviour might also affect quality of care. Implications for practice: Results from this systematic review indicate that caregivers prefer person-centred strategies to handle aggressive behaviour among older people, while the use of pharmaceuticals and coercion strategies is a last resort. © 2017 John Wiley & Sons Ltd.

  • 5308. Holst, Göran
    A family based model for dementia care in Blekinge, Sweden2009Conference paper (Refereed)
    Abstract [en]

    The studies' purpose was to investigate mood/emotional well-being in people with dementia living in their ordinary homes where they are most commonly cared for by their relatives, with special focus on the relationships between mood and stage of dementia, functional dependency and receiving support from a next of kin in daily personal care, and finally, the association between family caregivers feelings of burden, self-reported health, and mood of the patient. Baseline survey from a small longitudinal study, the Dementia in Blekinge Study (DIBS). 64 persons (53 % female) with a suspected or diagnosed dementia disease and 58 family caregivers (68 % female) participated. Data was collected by dementia nurses during a house call. Measurements used were: Mini Mental test and Clocktest (cognitive functioning); Berger scale (grade of dementia); Patient Mood Assessment Scale (mood-emotional well-being); ADL-staircase (dependency in activities); COPE index (career support, health and well-being). The results showed that a person with a moderate dementia who was dependent on help from others for personal care, was more often reported to have a bad mood. 28 % of the informal caregivers giving regular support answered that they quite often, or almost always, experienced it as a burden. There was a significant correlation between age and feeling burdened. Patient's children acting as caregivers more often reported themselves as feeling burdened by the role. Correlation between next of kin’s feelings of burden, and patient’s mood and emotional reactions, was weak.

  • 5309. Holst, Göran
    Bridging the communicative gap between a person with dementia and caregivers. A nursing perspective2000Doctoral thesis, comprehensive summary (Other academic)
  • 5310. Holst, Göran
    Livet som en berättelse2002In: Att möta personer med demens, Lund: Studentlitteratur , 2002, p. 96-106Chapter in book (Other academic)
  • 5311. Holst, Göran
    Mood in People with Dementia and its Relation to Informal Caregiver Burden: Developing a Model for a Family Care Based Nursing2008Conference paper (Refereed)
  • 5312. Holst, Göran
    Mood in people with suspected or diagnosed dementia and its relation to caregiver burden2007Conference paper (Refereed)
    Abstract [en]

    The emotional state of the person with dementia has been described as one important factor for the relatives in the decision making process when for example the need for another form of care has arisen. In order to develop interventions that can enhance wellbeing among persons with dementia and their relatives, it is important to understand how they react and adjust to the situation. It is therefore also important to explore the interrelation between the emotional state among people with early/moderate dementia and the caregiver’s experience of burden. The purpose of the study was to investigate mood in people with dementia, living in their ordinary home. Also to study the relation between mood and gender, age, living alone, stage of dementia, functional dependency and receiving support in daily personal care and finally to study the association between family caregivers feeling of burden, self-reported health and mood of the person receiving help. A sample of 64 persons, 34 women and 30 men, with a suspected or diagnosed dementia disease was included in the study and in 58 of the cases also a next of kin participated. The analysis showed that being dependent on help from others with personal care (PADL) and having a moderate dementia was mostly associated with not being confident. The analysis showed a correlation between feeling burdensome and bad self-reported global health, i.e. a next of kin that reported their health to be bad quite often or almost always fell more often burdensome. The findings indicate that having a moderate dementia and receiving help with such as personal hygiene from a next of kin and/or from formal caregivers has a negative impact on mood. The transition from early over to middle stage of dementia thus seems to be crucial. Maybe not only because of the increased cognitive decline but far more, or combined with, the fact that the person becomes dependent of intimate help from others to maintain daily life. The findings from the study contrast to the stress and coping model often used in dementia research in which people with dementia are described as contributing to emotional problems for those helping them. Thus, next of kin’s, helping a person with dementia to maintain their daily living are maybe not only or first of all stressed because of the role as a helper. The feeling of burden seems more related to the own experience of health.

  • 5313. Holst, Göran
    et al.
    Edberg, Anna-Karin
    Wellbeing among people with dementia and their next of kin over a period of 3 years2011In: Scandinavian Journal of Caring Sciences, ISSN 0283-9318, E-ISSN 1471-6712, Vol. 25, no 3, p. 549-557Article in journal (Refereed)
    Abstract [en]

    Little is known about the dyadic experience over time of people with dementia and their next of kin. The aim of this study was to investigate the state of mind of people with dementia, their next of kin’s experience of burden and satisfaction, and factors associated with these experiences over a 3-year period. The sample consisted of 32 people with dementia living at home with family caregivers in the south of Sweden. Data were collected during the period 2004–2007 and consisted of patients self reports (GDS), dementia nurse assessment (MMSE, Berger and ADL) and next-of-kin assessment (patient’s state of mind and care provision). Data also consisted of nextof- kin’s self reports concerning health, burden and satisfaction. The result showed that patients’ state of mind was mainly positive at baseline but a deterioration was seen over time in the patient’s mood and cognitive functioning together with an increase in ADLdependency and suspected depression. Dependency in personal ADL entailed a higher risk of being in a negative state of mind. For next of kin the experience of burden increased while satisfaction decreased over the 3 years. The inter-relationship between the patients’ mood and the caregiver’s satisfaction and burden seems to get stronger over time. At baseline caregiver burden was mainly related to the next of kins’ general health and to patient behaviours that were difficult to handle. During the progression of the disease caregiver satisfaction becomes increasingly related to patient state of mind and dependency. There is, however, a need for more research focusing on the specific inter-relational aspects as previous studies have mainly focused on either the situation for the person with dementia or on the caregiver.

  • 5314. Holst, Göran
    et al.
    Edberg, Anna-Karin
    Hallberg, Ingalill R
    Nurses narration and reflections of caring for patients with severe dementia as revealed in systematic clinical supervision1999In: Journal of Aging Studies, ISSN 0890-4065 , Vol. 13, no 1, p. 89-107Article in journal (Refereed)
  • 5315. Holst, Göran
    et al.
    Hallberg, Ingalill R
    Exploring the meaning of everyday life, for those suffering from dementia2003In: American Journal of Alzheimer’s Disease and Other Dementia, ISSN 1533-3175, E-ISSN 1938-2731, Vol. 18, no 6, p. 359-365Article in journal (Refereed)
    Abstract [en]

    Living with dementia means struggling to preserve a sense of self, to retain (and reevaluate) one's values in a new situation, and to search for a new way of life. This study explored the meaning of everyday life as expressed by 11 people suffering from dementia. Data were collected through interviews with people in the early stage of a diagnosed dementia disease. The findings indicate that many people with dementia feel shame, sorrow, and sadness when their life with the disease begins but also indicate prospects of a more manageable life. Since the reaction and adjustment to dementia differs from person to person, professional caregivers need to use a case-specific approach in the provision of care.

  • 5316. Holst, Göran
    et al.
    Hallberg, Ingalill R
    Gustafson, Lars
    The Relationship of Vocally Disruptive Behaviour and Previous Personality in Severly Demented Institutionalised Patients1997In: Archives of Psychiatric Nursing, ISSN 0883-9417, E-ISSN 1532-8228, Vol. 11, no 3, p. 147-154Article in journal (Refereed)
  • 5317. Holst, Göran
    et al.
    Rennemark, Mikael
    Can communicative problems between caregivers and patients with severe dementia be bridged by help from a close family member?2010Conference paper (Refereed)
    Abstract [en]

    Several studies have shown connections between personality and various kinds of behavioural and psychological symptoms in dementia. It has for example been found that personality traits such as introversion, rigidity, and a tendency to suppress emotions, as remembered retrospectively by a close family member, correlated positively with disturbed communicative behaviors in people with severe dementia. This finding indicates that personality characteristics should be considered in nursing care because they may help a caregiver to understand communicative attempts from a person not able to speak for themselves, i.e. express their feelings. Information from a next of kin about a sick person’s personality may help to bridge communicative gaps in care situations. However, the reliability of such information is not known. The aim of the present study was to evaluate the inter-rater agreement between healthy elderly people`s self-assessment and the assessment made by a next of kin concerning personality and Sense of Coherence (SOC). The participants (n=154) answered questions from the Eysenck personality scale and the Antonovsky SOC scale. The study shows high or moderate agreement in ratings when analysed by means of an intra-class correlation coefficient (range between r =.57 and r = .72) indicating that in general a close relative is able to report on the personality of a next of kin. The inter-rater agreement was high on SOC and Extraversion and somewhat lower on Neuroticism. For Neuroticism, length of time of relationship increased the odds for a good inter-rater agreement. Thus seemingly a next of kin is a reliable informant for the elderly in general and is probably also able to add information useful in the nursing care of people with a severe dementia disease.

  • 5318. Holst, Göran
    et al.
    Rennemark, Mikael
    Berglund, Johan
    Vård och omsorg i Karlskrona, personer 65 år och däröver, våren 20022002Report (Other academic)
  • 5319.
    Holst, Göran
    et al.
    Blekinge Institute of Technology, School of Health Science.
    Rennemark, Mikael
    Blekinge Institute of Technology, School of Health Science.
    Hallberg, Ingalill
    Blekinge Institute of Technology, School of Health Science.
    Self and next of kin’s assessment of personality and sense of coherence in elderly people: Implications for dementia care2012In: Dementia, ISSN 1471-3012, E-ISSN 1741-2684, Vol. 11, no 1, p. 19-30Article in journal (Refereed)
    Abstract [en]

    Nurses sometimes fail to understand the behaviour of individuals with severe dementia. Information from a next of kin may help to bridge this communicative gap. One factor that influences a person’s reaction to a disease is their personality and ability to cope with stress. The aim of this study was to evaluate the inter-rater agreement between healthy elderly people’s self-assessment and the assessment made by a next of kin concerning personality and sense of coherence. The participants (n¼154) answered questions from the Eysenck Personality Inventory (EPI) and the Antonovsky Sense of Coherence (SOC) scale. The study shows high or moderate agreement in ratings when analysed by means of an intra-class correlation coefficient (range between r¼.57 and r¼.72) and the results indicate that in general a close relative is able to report on the personality of a next of kin. The inter-rater agreement was high on SOC and extraversion and somewhat lower on neuroticism. For neuroticism, length of time in the relationship increased the odds for a good inter-rater agreement. Thus, seemingly a next of kin is a reliable informant for the elderly in general and is probably also able to add information useful in the nursing care of people with dementia.

  • 5320. Holst, Göran
    et al.
    Willman, Ania
    Fagerström, Cecilia
    Borg, Christel
    Hellström, Ylva
    Borglin, Gunilla
    Quality of care: Prevention of pressure ulcers – Nursing students facilitating evidence-based practice2010In: Vård i Norden, ISSN 0107-4083, E-ISSN 1890-4238, Vol. 30, no 1, p. 40-42Article in journal (Refereed)
    Abstract [en]

    This development project was aimed at engaging nursing students in a project targeting the prevention and reduction of pressure ulcers on an education based hospital ward. An intervention was implemented based on systematic assessment, skin observation, together with training and educational sessions, i.e. on how to make risk assessments and how to prevent and treat a pressure ulcer, were carried out. The project demonstrated the importance of offering nursing students an environment for clinical practice which supports them in participating and developing patient care starting from Evidence-Based Practice. During the project no patients developed pressure ulcers while on the ward. The opportunity to act as facilitators of evidence-based methods was found to enhance student ability to draw conclusions and make connections between quality of care and end result.

  • 5321.
    Holst, Helena
    Blekinge Institute of Technology, Faculty of Engineering, Department of Spatial Planning.
    Rörelse och social interaktion i den fysiska miljön: En fallstudie om gående och det sociala samspelet på Eskilstuna gågata2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Hållbarhetsarbetets framväxt i många kommuner i Sverige har kommit att beröra trafikslagen gång ochcykel. Detta har bland annat lett till att gång och cykel har prioriterats i trafikplaneringen i Sverige påsenare tid. I planeringsdokument hör ofta planering för att koncentrera gående till gångstråk och gågator ofta ihop med ambitioner om ökat liv och rörelse i staden. Även ökat stadsliv beskrivs i nationella ochlokala planeringsdokument som en effekt av ökad koncentration av gående på gatorna i centrum. Gående är det långsammaste trafikslaget och upplevelsen av omgivningen kan därför bli starkare än förandra trafikslag med högre hastigheter. När gående separeras från andra trafikslag (genomexempelvis att hänvisa gående till gågator) verkar stadslivets uppkomst och utveckling underförstådd. Samtidigt som stadslivet ofta beskrivs vara en central aspekt i planeringen så relateras den sällan till vilken roll det fysiska rummets utformning och möbleringen har för gåendes förutsättningar till rörelseoch interaktion. Detta synliggör ett kunskapsbehov att skala ner det abstrakta stadslivet till vaddet betyder i praktiken och hur olika utformningar relaterar till människans sociala samspel på gågator. Syftet är att åskådsliggöra relationen mellan de sociala värdena och den fysiska utformningen pågågator genom att studera Eskilstuna gågata. Vidare är tillvägagångsättet att se på samband mellan Jan Gehls och William Whytes resultat för tidigare observationsstudier och denna studies resultat. Detta görs med fokus på målgruppen; gående, som huvudanvändare av gågatan. Hur gåendes sociala samspel och rörelsemönster ser ut på gågatan sätts i relation till huruvida olika utformningar och möbleringar av gatan kan anses främja ett ökat stadsliv eller inte. Syftet är vidare att konkretisera vilka sociala värden som kan lyftas vid olika utformningar med utgångspunkt från Eskilstuna gågata.

    Uppsatsen är uppdelad i två delar. Den första delen presenterar hur en gågata och den gående beskrivs i nationella planeringsdokument samt vilka egenskaper dessa har. I den första delen presenteras även det sociala samspelets relation tillden fysiska miljön i både tidigare forskning och teori. I denna del presenteras en arbetsmodell som visar tillvägagångssättet och metoden för fallstudien. I en andra del presenteras uppsatsens fallstudie. Eskilstunas gågata (delar av Kungsgatan) planeras att byggas om vilket gör studieområdet högst aktuellt för studien. När gågatan byggs om skapasmöjlighet att utforma och möblera gatan utefter de sociala värden som finns idag. Resultatet utifrån inventering och observation av sociala beteendemönster på gatan visar exempelvis att entréer ärden mest attraktiva platsen även när det inte finns planerade sittplatser i närheten. Istället förbänkar blir planteringar i anslutning till entréerna populära. Det identifieras att vissa typer av utformningar och sätt att möblera gatan på inte verkar bidra till social interaktion på gatan medan andra utformningar i större utsträckning bidrar till detta. Uppsatsen avslutas med sammanfattande ideér och slutsatser för hur det framtida utformningsarbetet kan lyfta de befintliga sociala värdenasom finns på gågatan och därmed främja social interaktion.

  • 5322.
    Holstein, Frank
    Blekinge Institute of Technology, Faculty of Engineering, Department of Spatial Planning.
    Achieving greater energy efficiency in the built environment2014Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    This thesis aims to examine which policies and instruments are currently in place at local and regional levels in the Netherlands improving energy efficiency of buildings and to analyse actors’ perceptions on the expected contribution of these instruments towards achieving energy efficiency targets efficiency. The EU inter alia, defines the targets, whereas local actors implement measures contributing to this target. Different modes of governance have been defined to frame the influence of other levels of governance, initiatives and actions regarding energy efficiency in the built environment in the Northern Netherlands. Although not only governance arrangements determine policy instruments in place and their opportunities and challenges towards the achievement of targets, also normative values play a role. This becomes more relevant as more actors mention the own responsibility of citizens regarding energy efficiency in buildings. Actors from the state, market and civil society located in the Northern Netherlands, simulate primarily homeowners, facilitating initiatives. Communicative instruments are perceived to have most opportunities achieving targets. Financial instruments, on the other hand, have a too short timeframe and too different preconditions therewith perceived as less effective achieving targets. Therefore actions, initiatives and policy instruments could be coordinated at regional levels rather than local levels.

  • 5323. Holt, Nina Elisabeth
    et al.
    Briand, Lionel
    Torkar, Richard
    Blekinge Institute of Technology, Faculty of Computing, Department of Software Engineering.
    Empirical evaluations on the cost-effectiveness of state-based testing: An industrial case study2014In: Information and Software Technology, ISSN 0950-5849, E-ISSN 1873-6025, Vol. 56, no 8, p. 890-910Article in journal (Refereed)
    Abstract [en]

    Context Test models describe the expected behavior of the software under test and provide the basis for test case and oracle generation. When test models are expressed as UML state machines, this is typically referred to as state-based testing (SBT). Despite the importance of being systematic while testing, all testing activities are limited by resource constraints. Thus, reducing the cost of testing while ensuring sufficient fault detection is a common goal in software development. No rigorous industrial case studies of SBT have yet been published. Objective In this paper, we evaluate the cost-effectiveness of SBT on actual control software by studying the combined influence of four testing aspects: coverage criterion, test oracle, test model and unspecified behavior (sneak paths). Method An industrial case study was used to investigate the cost-effectiveness of SBT. To enable the evaluation of SBT techniques, a model-based testing tool was configured and used to automatically generate test suites. The test suites were evaluated using 26 real faults collected in a field study. Results Results show that the more detailed and rigorous the test model and oracle, the higher the fault-detection ability of SBT. A less precise oracle achieved 67% fault detection, but the overall cost reduction of 13% was not enough to make the loss an acceptable trade-off. Removing details from the test model significantly reduced the cost by 85%. Interestingly, only a 24–37% reduction in fault detection was observed. Testing for sneak paths killed the remaining eleven mutants that could not be killed by the conformance test strategies. Conclusions Each of the studied testing aspects influences cost-effectiveness and must be carefully considered in context when selecting strategies. Regardless of these choices, sneak-path testing is a necessary step in SBT since sneak paths are common while also undetectable by conformance testing.

  • 5324.
    Holte, Anna
    et al.
    Blekinge Institute of Technology, School of Health Science.
    Nilsson, Alexandra
    Blekinge Institute of Technology, School of Health Science.
    Upplevelser av att vårda sin partner med Alzheimers sjukdom i hemmet: En kvalitativ litteraturstudie ur närståendeperspektiv2012Student thesis
    Abstract [sv]

    Bakgrund: Alzheimers sjukdom är den vanligaste demensformen i västvärlden. Många närstående vill så långt som möjligt under sjukdomsförloppet vårda sin partner i hemmet. De anser sig själv vara den som bäst utför vården då de känner till de unika behoven hos sin partner. I takt med sjukdomens progredierande förlopp ökar partnerns behov av stöd från den närstående. Detta leder till en ökad fysisk och psykisk belastning hos den närstående. Syfte: Syftet är att belysa närståendes upplevelser av att vårda sin partner med Alzheimers sjukdom i hemmet. Metod: Litteraturstudie utförd med kvalitativ metod. Analys utförd med kvalitativ innehållsanalys. Resultat: I föreliggande studies resultat framkommer det att vårdgivande närstående upplevde det som deras plikt att sköta partnern med Alzheimers sjukdom i hemmet. Hjälp från utomstående var inget alternativ eftersom de närstående ansåg sig var den enda som kunde skänka total trygghet. I takt med sjukdomens progredierande förlopp ökade ovissheten inför framtiden. Ovissheten inför framtiden ledde till tvivel inför fortsatt vård i hemmet. Slutsats: Mer kvalitativ forskning föreslås inom berört område. Detta för att ge ökad insikt i hur närstående upplever vardagen som vårdgivare i hemmet. Genom detta kan en bättre förståelse uppnås för de närstående som vårdar sin partner med Alzheimers sjukdom i hemmet.

  • 5325.
    Homaidi, Omar Al
    Blekinge Institute of Technology, School of Computing.
    Data Remanence: Secure Deletion of Data in SSDs2009Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    The ongoing fast pace research in hardware and software technology has resulted in memory devices efficient and faster than ever before. However, the issue of security of the contained data is rarely discussed. There is an evident capability of these devices to retain data even when it is erased. In this thesis, a study is conducted to qualitatively analyze the extent to which data deletion is important and why secure deletion should be applied. Afterwards, following the sequential exploratory procedure, this paper presents an analysis of methods used to recover the data after being deleted in addition to the techniques used to securely delete this data. Based on this study, some recommendations are made to ensure the safety of data.

  • 5326.
    Honarpardaz, Mohammad Mahdi
    Blekinge Institute of Technology, School of Engineering.
    Finite Element and Experimental Analysis of Function of Plastic Clips2011Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    The aim of this work is to investigate the function of plastic clips which are used to join different parts, during mounting and dismounting processes. The clips are made of POM and will be mounted on steel plates. The study is undertaken using experimental and numerical methods. In experiments, the mounting and dismounting forces are measured with respect to vertical displacement of the clips related to the plate. The numerical method is performed using structural implicit non-linear quasi-static Finite Element method. In order to mesh, solve and study the results of FEM, Hyper Works, LS-DYNA and MD-Nastran programs are used. The effect of some parameters, e.g. stiffness, friction, hole diameter, etc. is also investigated and discussed. The project is done at SAAB Automobile AB.

  • 5327.
    Honarpardaz, Mohammadali
    Blekinge Institute of Technology, School of Engineering.
    Modeling and Optimizing Ultra-fast Thomson-type Actuators for Electrical Switches2011Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    In order to obtain an ultra-fast actuator functionality in mechanical switching mechanisms, Thomson-type coils (TC) can be a suitable choice to be employed, with the ability to exert massive forces in short time. In this Master thesis, a practical Thomson coil was designed and simulated with finite element methods to present features and the performance of TC-type actuators, primarily from the mechanical aspects. In view of the fact that some attributes of TC have dynamic mechanical behavior, transient and time-dependent simulation plays a very significant role in modeling such an actuator. Once the proper model was approached, a prototype was built to verify the accuracy of simulated models. As illustrated in the results, modeled TC can forecast characteristic behavior in an actual applications. Sensitivity analysis was carried out in order to optimize the TC's performance with respect to maximum speed, exploring the order of influence of variables with parameters. Consequently, multi-objective optimization techniques were employed to find optimum design for all parts of a TC. Various conductive materials were investigated for the moving armature in order to fulfill the electrical requirements, as well as the mechanical.

  • 5328. Hong, Seung-Sun
    et al.
    Wong, Fiona
    Wu, Felix
    Lilja, Bjorn
    Jansson, Tony Y.
    Johnson, Henric
    Nilsson, Arne A.
    TCPtransform: Property-Oriented TCP Traffic Transformation2005Conference paper (Refereed)
    Abstract [en]

    A TCPdump file captures not only packets but also various "properties" related to the live TCP sessions on the Internet. It is still an open problem to identify all the possible properties, if ever possible, and more importantly, which properties really matter for the consumers of this particular TCPdump file and how they are related to each other. However, it is quite clear that existing traffic replay tools, for the purpose of system evaluation, such as TCPreplay destroyed at least some of critical properties such as "ghost acknowledgment" (while the origin packet has never been delivered), which is a critical issue in conducting experimental evaluations for intrusion detection systems. In this paper, we present a software tool to transform an existing TCPdump file into another traffic file with different "properties". For instance, if the original traffic is being captured in a laboratory environment, the new file might "appear" to be captured in between US and Sweden. The transformation we have done here is "heuristically consistent" as there might be some hidden properties still being destroyed in the transformation process. One interesting application of our tool is to build long-term profiles to detect anomalous TCP attacks without really running the target application over the Internet. While, in this paper, we only focus on property-oriented traffic transformation, we have built and evaluated an interactive version of this tool, called TCPopera, to evaluate commercial intrusion prevention systems.

  • 5329.
    Hoogduyn, Rick
    Blekinge Institute of Technology, Faculty of Engineering, Department of Spatial Planning.
    Urban Acupuncture "Revitalizing urban areas by small scale interventions"2014Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    This thesis aims to create a better understanding of the theory of urban acupuncture. It attempts to create an overall view of the theory and discusses its benefits and challenges. By applying a critical discourse analyze on the visions of three theorists and four additional case studies, this thesis seeks to find an answer to the main research question: How can the theory of Urban Acupuncture be successfully applied in order to revitalize urban areas? The three enumerated visions within this thesis, belong to the theorists who coined urban acupuncture namely; Jaime Lerner, Manuel de Sola-Morales and Marco Casagrande. Urban acupuncture takes part of an emerge of Do It Yourself (DIY) initiatives. By urban acupuncture is generally understood that it is about the application of small scale interventions, which create a higher livability. It hereby reacts against the large-scale revitalization projects that took place in the last decades. Urban acupuncture performs small-scale interventions at strategic chosen locations to create a maximization of the effects causing possible (socially) catalytic spinoffs. Urban acupuncture projects can occur from top-down as well as bottom-up initiatives and allow participatory processes. Comprehensive information on urban acupuncture is scarce. The available sources remain vague about the correct implementation or execution and offer little to no clarification. Nevertheless there are initiatives noticeable by several practitioners. By analyzing these projects with a critical look, a link between the theory and practice can be made, allowing an exposure of the benefits and challenges that these cases encountered. The enumeration of these aspects leads to a better understanding of the theory and can thereby lead to a better implementation for future projects. The thesis focuses on four cases studies, differing from both top-down as bottom- up initiatives. Two cases represent the top-down initiative projects and took place in Rosengård, (Malmö, Sweden). The two bottom-up initiatives took place in De Baarsjes (Amsterdam, the Netherlands). These cases have indicated themselves, that they applied urban acupuncture. The main findings of this thesis are that from the theory, 8 different principles can be determined, which should be taken into account when urban acupuncture is applied. The case studies that this thesis addresses, showcase noticeable similarities with these 8 principles. This account for both top-down as for the bottom-up initiatives. However, the projects have also showcased that not all the principles were as obviously present as others. This can be related to the fact that the cases marked their projects as urban acupuncture in a retro-perspective way. This puts the results of this thesis in a different spotlight. Another possible explanation could be that the principles are not a necesity, but mostly a recommendation. Therefore not every principle might be present in forms of urban acupuncture. Nevertheless the chosen cases demonstrate the effects of the participatory processes, which can lead to several benefits, such as; a greater support, a (social) catalytic effect, the enforcement of process changes and the lower costs. Urban acupuncture is not a ready-made solution but the strategy towards the interventions. This also brings several challenges along, which need to be overcome. These challenges may vary from the making of promises to the participants, the time limitations, the need for cohesion in the society and the danger of bureaucracy. Urban acupuncture asks for micromanagement in order to safeguard a successful implementation. The principles that are enumerated in this thesis are to be kept in the back of the mind, making the changes for success bigger. The principles, stated in this thesis, are not independent from each other; instead they require each others influence and therefor overlap other principles. A metaphor with a rose can be made. The leaves of the rose represent the principles or urban acupuncture. The leaves are the elements where the rose consists out of. Not every principle is needed in order to stay a rose. On the other hand, more principles might be present but it is still considered to be a rose. A rose that grows from the cracks in the concrete. The concrete is our urban environment, which is the urban skin. This urban skin has it flaws and sensitive points. These are the cracks which represents the potential areas and problem areas within this urban skin. Even though the rose might be small, it can create a huge impact on a person. This is the social impact that urban acupuncture is aiming for. The impact starts at a small area but can have a ripple effect if implemented in a good way. The better the looks of the leaves, the bigger the change on a great impact. The leaves of the rose are overlapping, just like the principles have a great influence on each other. If the leaves of the rose unfold, the rose looks better. The better the elaboration of the principles, the better the intervention. A rose has thorns, which can be tedious. One must prevent himself not to get stung. If one is aware of the thorns, they can be removed. The same is also true for urban acupuncture, at which challenges come along. Provided that these challenges are kept in mind, they can be overcome. A rose is temporary but can be preserved if taken care of. The rose takes time to grow, but a first seed needs to be planted. This is the (quick) act that urban acupuncture asks for. We need to start seeding now.

  • 5330. Hoppe, Magnus
    et al.
    Hamrefors, SvenSøilen, Klaus Solberg
    Competitive Intelligence: Competing, Consuming and Collaborating in a Flat World2009Collection (editor) (Other academic)
    Abstract [en]

    CONTENT The convergence of Societal Intelligence and Territorial Intelligence to promote Sustainable Development of weakened territories in France. By CHRISTIAN BOURRET Can military education benefit from the study of competitive intelligence? By DIDIER DANET Strategic Dependence of a Developing Country Vision from Patents By HENRI DOU, JEAN MARIE DOU JR, SRI DAMAYANTY MANULLANG Causes of Competitive Analysis Failure: Understanding and Responding to Problems at the Individual Level. By DR CRAIG S. FLEISHER, SHEILA WRIGHT Simon’s theorem reconsidered – towards a theoretical framework for competitive intelligence. By PER FRANKELIUS The Human Factor and Competitive Intelligence: Resource, lever and key for success. By ANNE‐MARIE FRAY Looking for Information: a New Approach to Consider Efficiency and Effectiveness. By PASCAL FRION, HENRI SAMIER The generation of a rumour: from emergence to percolation. By LAURENT GAILDRAUD, HENRI SAMIER, JEAN MAURICE BRUNEAU Tracking business news on the World Wide Web for dynamic CI study of industries. By BRIGITTE GAY Intelligence ideals. By MAGNUS HOPPE Economic Intelligence in Small and Medium Businesses in France: a survey. By SOPHIE LARIVET Competitive Intelligence and Strategic Governance Issues for French Groups of Mutual Banks Facing the Financial Crisis. By DR. DENIS MALHERBE Writing cases as a knowledge capture process in a competitive intelligence program. By MONICA M MALLOWAN, CHRISTIAN MARCON Knowing is action: from noticing to sense-making. By NICOLAS MOINET, PASCAL FRION Methodology to integrate Competitive Intelligence with the Hoshin Kanri planning system: Application to a Commercial Strategy. By FILIBERTO LUÉVANO NARVÁEZ, MARISELA RODRÍGUEZ SALVADOR, JOSÉ ROBERTO ANTONIO VEGA PINO Marginalizing the periphery: enhancing competitive awareness by looking less hard. By MICHAEL NEUGARTEN Enterprise 2.0 as a way to facilitate, enhance, and coordinate intelligence work within large organizations: A Case Study at Toyota Material Handling Europe. By JON‐ERIK OLSSON, JIMMY SANDELL Representing territory resources within a territorial intelligence system. By MARYSE SALLES, GABRIEL COLLETIS Evaluating Business Intelligence Software - Testing the SSAV Model. By YASMINA AMARA, KLAUS SOLBERG SØILEN, PER JENSTER, DIRK VRIENS How application integration, security issues and pricing strategies in business intelligence shape vendor differentiation. By KLAUS SOLBERG SØILEN, ANDERS HASSLINGER Operational Business Intelligence: A Viable Concept. By MATTHIJS VAN ROOSMALEN

  • 5331.
    Hoque, MD. Anamul
    Blekinge Institute of Technology, School of Computing.
    VOIP mobility over heterogeneous networks with focus on mobility issue2010Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    Abstract Multimedia on wireless networks and the integration with other cellular networks requires support for both mobility and quality of service. When mobile nodes move across different wireless networks, current session may be affected by the several factors like hand off delay, jitter and data loss. Voice over IP (VOIP) will be operated seamlessly across different wireless networks and that resulted few issues like mobility, signals and security. Mobile IP is proposed as a network layer host mobility solution. The problem associated with mobile IP makes it unsuitable for real time interactive solution like Voice over IP (VOIP). In this thesis paper we study the VOIP mobility in homogeneous wireless networks and cross layer mechanism for heterogeneous wireless networks which can support mobility in layer 2 of the network stack to get better VOIP performances and mobility. We describe the cross layer mechanism and the experimental results.

  • 5332.
    Hoque, Mohammad Mozammel
    et al.
    Blekinge Institute of Technology, School of Engineering.
    Hossin, Md. Delwar
    Blekinge Institute of Technology, School of Engineering.
    Performance Study and comparison of Handover Mechanisms between WiMAX Mobile Multihop Relay (802.16j) and mobile WiMAX (802.16e) using NCTUns2011Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    Multihop wireless access networks are the subject of much interest at present. In the last few years they have moved from the domain of an interesting research topic to one having a significant impact on the commercial world. WiMAX (Worldwide Interoperability for Microwave Access) is introduced by the Institute of Electrical and Electronic Engineers with designated standards 802.16d-2004 and 802.16e-2005 (used in fixed wireless applications) and 802.16k-2006 (mobile wireless) to provide a worldwide interoperability for microwave access. For WiMAX networks, the IEEE has started in 2006 to work on 802.16j "Mobile Multihop Relay" (MMR). 802.16j offers a potential solution to some of the classic problems in deployment of radio access networks. Comprising low-cost relays associated with base stations (BSs), they can be used both to realize larger coverage areas for BSs and to increase capacity for congested areas. The basic idea behind MMR is to allow WiMAX base stations which do not have a backhaul connection to communicate with base stations that do. Multihop wireless systems have the potential to offer improved coverage and capacity over single-hop radio access systems. Standards development organizations are considering how to incorporate such techniques into new standards. One such initiative is the IEEE 802.16j standardization activity, adding relay capabilities to IEEE 802.16 systems. Relay-based systems typically comprise small form factor low-cost relays, which are associated with specific base stations. The relays can be used to extend the coverage area of a BS and/or increase the capacity of a wireless access system. Typically, it is envisaged that they could be used in the early stages of network rollout to provide coverage to a large area at lower cost than a BS only solution; they can also be used to provide increased capacity in more developed networks as well as coverage to coverage holes such as areas in the shadows of buildings. As the urban structures are getting heavily dominated by buildings day by day, network coverage in heaving areas blocked by buildings is a big challenge. The aim of 802.16j is to extend coverage area with improved capacity and low cost by the use of relay stations. In this thesis, the performance of standard handover mechanisms in MMR has been studied. NCTUns-6.0, which is an open source simulation tool that supports 802.16j standard, has been used in this thesis for the simulation. Only Hard Handover has been simulated on 802.16j scenario as NCTUns-6.0 only supports this handover method. Same simulation has been made on 802.16e scenario as well for the purpose of quantitative comparison. The performance parameters have been handover time, downlink throughput and transfer of packets. Keywords: Mobile Multhop Relay(MMR), WiMAX, Hard Handover, NCTUns, Base station(BS), Relay station(RS), OFDMA

  • 5333.
    Horm, Peeter
    et al.
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    Olofsson, Sarah
    Blekinge Institute of Technology, Department of Human Work Science and Media Technology.
    Att bryta isoleringen: sociala faktorer i nätbaserad distansutbildning2002Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [sv]

    Detta projekt fokuserar på distansstudenter och deras studiesituation i tre nätbaserade kurser. Genom en empirisk studie bestående av samtal med studenter och lärare, samt deltagande observation, har vi försökt finna lösningar för att förbättra studenternas lärandemiljö. De sociala faktorerna visade sig vara av stor betydelse i en studieform som tidigare kännetecknats av isolation mellan studenter och lärare. Projektet visar på hur en nätbaserad utbildningsplattform genom enkla tekniska lösningar kan ta hänsyn till studentens behov i fråga om att stödja kommunikation och samarbete.

  • 5334.
    Horn, Stefanie
    Blekinge Institute of Technology, School of Technoculture, Humanities and Planning.
    Cluster Initiatives: The Example of the ICT-Industry in the Metropolitan Region Frankfurt / Rhine-Main2009Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Cluster-based economic development has become an increasingly popular topic for researchers and economic development professionals. Clusters are networks of enterprises and diverse establishments which are close-by in a certain geographical market and connected through relationships of dependence allocating a belonging category of goods and/or services. A growing interest in clusters as an instrument for economic success and growth can be noticed. Especially the new development of cluster-based endeavours i.e. cluster initiatives (CIs) have received much regard. The cluster researcher Christian H. M. Ketels considers as one important point for the success of CIs their involvement into a broader strategy, isolated cluster initiatives have less impact, both overall and on the cluster they are focused on. According to this view, communication and co-operation relationships between different CIs closely located in one region could be really important. In addition, it is also interesting how such different CIs are structured and operate. Therefore, the following two main questions are now interesting to analyze: • What are the differences and similarities between closely located CIs in regard to organization, initiation, participants, financing, limitation, visions, goals, measures, challenges, success factors, problems, achievements, self-satisfaction and self-identification? • To what extent do closely located CIs know of each other, do they co-operate, communicate and collaborate, do they have thematic overlaps and do they exploit advantages, which result from their closely location? These questions cannot be answered in general for all existing CIs. Because of that, the metropolitan region Frankfurt / Rhine-Main is chosen to answer and illustrate the questions for a specific area. This region is chosen because it is one of the economically strongest metropolitan areas in Europe with a lot of closely located CIs, especially in the ICT-industry, and is therefore interesting.

  • 5335.
    Horvat, Marko
    et al.
    University of Zagreb, SRB.
    Dobrinic, Marko
    University of Zagreb, SRB.
    Novosel, Matej
    University of Zagreb, SRB.
    Jerčić, Petar
    Blekinge Institute of Technology, Faculty of Computing, Department of Creative Technologies.
    Assessing emotional responses induced in virtual reality using a consumer EEG headset: A preliminary report2018In: 2018 41st International Convention on Information and Communication Technology, Electronics and Microelectronics, MIPRO 2018 - Proceedings, Institute of Electrical and Electronics Engineers Inc. , 2018, p. 1006-1010Conference paper (Refereed)
    Abstract [en]

    We report on a pilot study involving emotion elicitation in virtual reality (VR) and assessment of emotional responses with a consumer-grade EEG device. The stimulation used HTC Vive VR system showing pictures from NAPS database within a specifically designed virtual environment. The stimulation consisted of two distinct sequences with 10 pictures of happiness and 10 pictures of fear. Each picture was contained in a separate virtual room that the participants traveled through along a preset path. The estimation employed EMOTIV EPOC+ 14-channel EEG headset and a custom-developed application. The software wirelessly received EEG signals from alpha, beta low, beta high, gamma and theta bands, time-stamped them and dynamically stored in a relational database for subsequent analysis. Our preliminary results show that statistically significant correlations between valence and arousal ratings of pictures and EEG bands are present but highly personalized. Simultaneous correct placement of VR and EEG headsets is demanding and precise localization of electrodes is difficult. In fact, if emotion estimation is not strictly necessary we recommend using devices with fewer electrodes. Nevertheless, we found the EEG to be effective. By acknowledging its limitations, and using the headset in the correct context, experiments involving emotions may be significantly amended. © 2018 Croatian Society MIPRO.

  • 5336.
    Horyachyy, Oleh
    Blekinge Institute of Technology, Faculty of Computing, Department of Computer Science and Engineering.
    Comparison of Wireless Communication Technologies used in a Smart Home: Analysis of wireless sensor node based on Arduino in home automation scenario2017Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Context. Internet of Things (IoT) is an extension of the Internet, which now includes physical objects of the real world. The main purpose of Internet of Things is to increase a quality of people’s daily life. A smart home is one of the promising areas in the Internet of Things which increases rapidly. It allows users to control their home devices anytime from any location in the world using Internet connectivity and automate their work based on the physical environment conditions and user preferences. The main issues in deploying the architecture of IoT are the security of the communication between constrained low-power devices in the home network and device performance. Battery lifetime is a key QoS parameter of a battery-powered IoT device which limits the level of security and affects the performance of the communication. These issues have been deepened with the spread of cheap and easy to use microcontrollers which are used by electronic enthusiasts to build their own home automation projects.

    Objectives. In this study, we investigated wireless communication technologies used in low-power and low-bandwidth home area networks to determine which of them are most suitable for smart home applications. We also investigated the correlation between security, power consumption of constrained IoT device, and performance of wireless communication based on a model of a home automation system with a sensor node. Sensor node was implemented using Arduino Nano microcontroller and RF 433 MHz wireless communication module.

    Methods. To achieve the stated objectives of this research following methods were chosen: literature review to define common applications and communication technologies used in a smart home scenario and their requirements, comparison of wireless communication technologies in smart home, study of Arduino microcontroller technology, design and simulation of a part of  home automation project based on Arduino, experimental measurements  of execution time and power consumption of Arduino microcontroller with RF 433 MHz wireless module when transmitting data with different levels of security, and analysis of experimental results.

    Results. In this research, we presented a detailed comparison of ZigBee, WiFi, Bluetooth, Z-Wave, and ANT communication technologies used in a smart home in terms of the main characteristics. Furthermore, we considered performance, power consumption, and security. A model of a home automation system with a sensor node based on Arduino Nano was described with sleep management and performance evaluation. The results show that the battery lifetime of Arduino in a battery-powered sensor node scenario is determined by the communication speed, sleep management, and affected by encryption.

    Conclusions. The advanced communication strategy can be used to minimize the power consumption of the device and increase the efficiency of the communication. In that case, our security measures will reduce the productivity and lifetime of the sensor node not significantly. It’s also possible to use symmetric encryption with smaller block size.

  • 5337.
    Hoseinian, Taymaz
    et al.
    Blekinge Institute of Technology, School of Management.
    Yousef, Josef
    Blekinge Institute of Technology, School of Management.
    A STUDY ON THE CULTURAL DIFFERENCES AND THE LEADERSHIP STYLES IN SCANDINAVIA AND SOUTH KOREA2013Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    Many Western companies are developing and choosing to expand in South Korea among other Eastern countries due to reasons such as economic benefits and/or lack of resources in the home country. This result in the need of understanding the local culture followed by the necessary adjustments in the leadership style(s) to achieve project success. The aim of this study is to determine the cultural differences between Scandinavia and South Korea, the different leadership styles(s) practiced by Scandinavian leaders in South Korea and the strategies used for adjusting to the South Korean working environment. This study has used journals, books, websites and interviews to determine and describe the cultural differences and leadership styles followed by the strategies for adjusting to the South Korean working environment. It was found in the theory that there are cultural differences between Scandinavia and South Korea, which lead to different leadership styles that should be practised. The most efficient leadership styles for Scandinavia are almost the opposite of the most efficient leadership styles for South Korea. Based on the empirical results, it was found that Scandinavian leaders have a cultural understanding and have mostly used a combination of two or more leadership styles when working in South Korea. Even if some leaders did adjust their leadership style to the new environment, they did not completely practise the leadership styles that suit South Korea the best. It was also found that participants prepare themselves by reading books and talking with colleagues for exchanging ideas and experiences before departure to South Korea. Few of the participants had the chance to attend a course/workshop related to South Korea prior to the move. It is concluded that the overall leadership styles practised by Scandinavians in South Korea are more of the Scandinavian character and therefore there is a need of adjustments for achieving leadership effectiveness in the South Korean working environment. There is also a great need of pre departure and post arrival training for easier relocation to South Korea. However, the authors got the impression during the interviews performed that the communication and cooperation between leaders and team members in South Korea were not a big issue as such, rather the issue was the communication and cooperation between Scandinavian teams and the South Korean suppliers. The findings are believed to be valuable for companies transferring Scandinavian expatriates to lead in the Confucian cultures in general and in South Korea in particular.

  • 5338.
    Hossain, Firoz
    et al.
    Blekinge Institute of Technology, School of Engineering, Department of Signal Processing.
    Sohab, Abu-Shadat-Mohammad
    Blekinge Institute of Technology, School of Engineering, Department of Signal Processing.
    Mathematical Modelling of Call Admission Control in WCDMA Network2007Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    WCDMA is an interference limited multiple access technique .It is widely used in the 3rd generation mobile networks like UMTS. When a new call arrives in the system to get admission, it checks whether the call is admitted or not based on some parameters like signal to interference ratio (SIR), transmission power of the Node B and the air interface load .If the call is accepted this will increase some interference to the ongoing calls. This new interference would degrade the ongoing calls and this will also add some extra load which may also lead to the exceeding capacity. So that the system has to decide this admission policy in a systematic way that all the users should maintain their communication with guaranteed quality of service. This decision making algorithm belongs to the radio resource management functionalities of the Radio Network Controller (RNC) in a WCDMA based UMTS network. This thesis paper focuses on the mathematical representation of the call admission control in an interference based environment. There is also a comparative study with different methods.

  • 5339.
    Hossain, Mohammad
    Blekinge Institute of Technology, School of Computing.
    Analysis and Assessment the Security Issues of IEEE 802.16/WiMax Network2010Independent thesis Advanced level (degree of Master (One Year))Student thesis
    Abstract [en]

    WiMax is a wireless based technology standard that provides high throughput broadband connections over long distances. Security is one of the major considerations in broadband wireless access especially when wireless devices are added to it. Wimax/802.16 is also not free from vulnerability, threats, risks or other attacks to provide secured and robust services like as other standards 802.11 and so on. With the high and effective security confirmation, this technology would be more reliable and trustworthy. This paper works on all possible attacks of Wimax standard and provided their solutions which separately came on light so far. This research found some difficulties in the security of 802.16 transmissions and then proposed solutions for that. Also, a simulation work has been done in dot net framework with C# language and illustrated the justification of the research result.

  • 5340.
    Hosseini, Amir Haji
    Blekinge Institute of Technology, School of Engineering.
    Numerical Simulation of the Curing Process of Fiber Reinforced Polymer Composites2013Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    The curing process of Fiber reinforced polymer rebars using a two phase curing process is investigated in this work. These rebars are developed as an alternative reinforcing material in reinforced concrete. The chemical resistance and high specific strength and stiffness of these rebars make them an important subject for research

  • 5341.
    Hosseini, Ehsan
    Blekinge Institute of Technology, Faculty of Engineering, Department of Mechanical Engineering.
    Mechanical Properties of Outer Protection Layer on Submarine High Voltage Cables2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In this thesis, the Mechanical properties of polypropylene yarn of outer protection layer on Submarine High Voltage Cable, twisted around submarine cable,is determined on various conditions at ABB Company. In the first step, tensile tests are done with polypropylene yarn specimens with and without Bitumen at Room temperature.

    In the second step,tensile tests are done with polypropylene yarn specimens with and without Bitumen and with knotted polypropylene yarn namely: the Fishermen’s knot, the Weaver’s knot, the Square knot and the Overhand knot at Warm Condition (60˚c) and Cold Condition(-5˚c).

    In the final step,it is proposed to obtain numerical solution using FEM analysis with ABAQUS Software to obtain the hoop stress , the yarn stresses from twisting cable and analyzing of the cylindrical buckling in the buckling torsion and buckling bending on the outer layer of submarine cable with polypropylene material that is mixed with Bitumen.

  • 5342.
    Hosseini, Somayeh
    Blekinge Institute of Technology, School of Engineering.
    Mapping Based Noise Reduction for Robust Speech Recognition2010Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    This project aims at proposing a new noise reduction technique for speech recognition purposes. The proposed method called mapping based noise reduction is performed on the feature vectors extracted from speech signals. In this work the dimensionality reduction functionality of algorithms such as Locally Linear Embedding and Principal Component Analysis is exploited to map the corrupted speech feature vectors to their corresponding noise-free feature vectors. The feature vectors are first mapped to the lower dimensional space and in this space the nearest clean vector to each noisy vector is found, mapped back again to the original space and given as the input to the speech recognition system. This approach is examined on the speech signals with artificially added wind noise with different signal to noise ratio values and articulated by two different speakers.

  • 5343. Hosseinzadeh Dolkhai, Amirali
    Supporting Simulink models in Systems and Software Architecture Recovery To Automotive Embedded System2014Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In current complex vehicles, to have correct architectural models is fundamental for automotive E/E systemsdevelopment. This is important:

    - to understand how subsystems are dependent on each other,

    - for compliance with ISO 26262, architecture models need to be maintained

    - since requirements need to linked to the architecture (also according to ISO 26262)

    Architecture recovery is to recover the software or systems architecture using the source code and other relatedartifacts. In literature, mostly software architecture recovery has been studied, and the source of information has been source code. However, industrial automotive software consists nowadays typically of a mix between manually written source code and generated source code from Simulink. Therefore, in this project, we are aiming to extend software architecture recovery from source code by integrating also architecture recovery from Simulink models.

    In addition to deriving the methodology, one aim is also to implement an architecture recovery module,dedicated to Simulink models, and integrate that module into a prototype system under development in the research project ESPRESSO. The output from the module, the architectural model, is to be stored in a graph database. Furthermore, the architectural model needs to be visualized in an architecture viewer, which is also part of the prototype System.

  • 5344.
    Hossen, Md.Showket
    et al.
    Blekinge Institute of Technology, School of Computing.
    Islam, Md.Neharul
    Blekinge Institute of Technology, School of Computing.
    QoS Performance Evaluation of Video Conferencing over LTE2012Independent thesis Advanced level (degree of Master (Two Years))Student thesis
    Abstract [en]

    Mobile data usage has been on the rise in relation to the streaming media such as video conferencing and online multimedia gaming. As a result, Long-Term Evolution (LTE) has earned a rapid rise in popularity during the past few years. The aim of this master’s thesis is to analyze the quality of service (QoS) performance and its effects when video is streamed over a GBR (Guaranteed bit rate) and non-GBR bearers over LTE. Using OPNET (Optimized Network Engineering Tool), the performance can be simulated having Downlink (DL) and Uplink (UL) scenarios for video conferencing including web traffic. Further we also measured the performance of packet End-to-End (E2E) delay, packet loss and packet delay variation (PDV). This thesis work is an empirical work, which can be followed up by further research propositions.

  • 5345. Hossfeld, Tobias
    et al.
    Biedermann, Sebastian
    Schatz, Raimund
    Platzer, Alexander
    Egger, Sebastian
    Fiedler, Markus
    The memory effect and its implications on Web QoE modeling2011Conference paper (Refereed)
    Abstract [en]

    Quality of Experience (QoE) has gained enormous attention during the recent years. So far, most of the existing QoE research has focused on audio and video streaming applications, although HTTP traffic carries the majority of traffic in the residential broadband Internet. However, existing QoE models for this domain do not consider temporal dynamics or historical experiences of the user's satisfaction while consuming a certain service. This psychological influence factor of past experience is referred to as the memory effect. The first contribution of this paper is the identification of the memory effect as a key influence factor for Web QoE modeling based on subjective user studies. As second contribution, three different QoE models are proposed which consider the implications of the memory effect and imply the required extensions of the basic models. The proposed Web QoE models are described with a) support vector machines, b) iterative exponential regressions, and c) two-dimensional hidden Markov models.

  • 5346. Hossfeld, Tobias
    et al.
    Binzenhöfer, Andreas
    Fiedler, Markus
    Tutschku, Kurt
    Measurement and Analysis of Skype VoIP Traffic in 3G UMTS Systems2006Conference paper (Refereed)
    Abstract [en]

    Voice-over-IP (VoIP) telephony becomes more and more popular in the wired Internet because of easy-to-use applications with high sound quality like Skype. UMTS operators promise to offer large data rates which should also make VoIP possible in a mobile environment. However, the success of those application strongly depends on the user perceived voice quality. In this paper, we therefore analyze the achievable and the actual quality of IP-based telephony calls using Skype. This is done performing measurements in both a real UMTS network and a test environment. The latter is used to emulate rate control mechanisms and changing system conditions of UMTS networks. The results show whether Skype over UMTS is able to keep pace with existing mobile telephony systems and how it reacts to different network characteristics. The investigated performance measures comprise the Perceptual Evaluation of Speech Quality (PESQ) to evaluate the voice quality, the packet loss, the inter-packet delay, and the throughput to capture networkbased factors. In this context, the concept of the Network Utility Function (NUF) is applied to describe the impact of the network on the voice quality as perceived by the end-user.

  • 5347. Hossfeld, Tobias
    et al.
    Egger, Sebastian
    Schatz, Raimund
    Fiedler, Markus
    Blekinge Institute of Technology, School of Computing.
    Masuch, Kathrin
    Lorentzen, Charlott
    Initial delay vs. interruptions: Between the devil and the deep blue sea2012Conference paper (Refereed)
    Abstract [en]

    End user quality perception in the context of Internet applications is often characterized by waiting times before service consumption as well as interruptions during service consumption. In particular in case of bad network conditions, network and service providers have to trade off between these two impairment types, i.e. between the devil and the deep blue sea. In this paper we investigate this tradeoff in order to guide the design and development of Internet applications and network management approaches. The contribution of this paper is twofold. Firstly, we quantify the impact of initial delays on the user perceived Quality of Experience (QoE) for different application scenarios by means of subjective laboratory and crowdsourcing studies. We show that QoE for a given waiting time strongly depends on the concrete application at hand but that rating diversity remains fairly application-invariant. Secondly, using the example of YouTube video streaming we compare the influence of initial delays and interruptions (stallings) during watching. Our results demonstrate that users are extremely sensitive to interruptions and that services should be designed accordingly e.g. by increasing initial delay for prebuffering to overcome lack of resources.

  • 5348. Hossfeld, Tobias
    et al.
    Fiedler, Markus
    Blekinge Institute of Technology, Faculty of Computing, Department of Communication Systems.
    The unexpected QoE killer: When the network emulator misshapes traffic and QoE2015In: 2015 7th International Workshop on Quality of Multimedia Experience, QoMEX 2015, IEEE Communications Society, 2015, Vol. Article number 7148093Conference paper (Refereed)
    Abstract [en]

    Packet streams observed in today’s networks show a high degree of autocorrelation as successive packets tend to exhibit similar delay and loss characteristics. Network emulators used to conduct performance evaluations therefore have to support the generation of such autocorrelated streams. Typically, this is done using first order autoregressive processes. In this paper, we show that a common implementation of this approach leads to problems when emulating correlated packet loss, and therefore possibly produces erroneous results and conclusions when evaluating objectively application quality or QoE in subjective studies. Further typical network emulator implementations make even low packet jitter become an unexpected QoE killer. © 2015 IEEE.

  • 5349. Hossfeld, Tobias
    et al.
    Fiedler, Markus
    Zinner, Thomas
    The QoE provisioning-delivery-hysteresis and its importance for service provisioning in the Future Internet2011Conference paper (Refereed)
    Abstract [en]

    Quality of Experience (QoE) combines non-technical parameters such as user perception, experience and expectations with technical parameters such as application-and network-level Quality of Service (QoS). For service or network providers, it is important to understand the quantitative relationship between QoE and these technical parameters in order to manage the user-perceived quality. This paper investigates the different impacts of a) provisioning and b) delivery problems due to insufficient resources on QoE, leading to the QoE provisioning-delivery hysteresis (QoE-PDH). We demonstrate the QoE-PDH for Voice-over-IP, live video streaming, and web browsing based on existing measurement studies. The results clearly quantify the necessity to control quality, instead of suffering from uncontrollable impacts like packet loss caused by congestion. The implementation and the limitations of the QoE-PDH in the current Internet is shown using the example of Skype. Afterwards we discuss how these results can be used to enhance energy-efficient service provisioning and delivery in the Future Internet.

  • 5350. Hossfeld, Tobias
    et al.
    Hock, David
    Tran-Gia, Phuoc
    Tutschku, Kurt
    Blekinge Institute of Technology, School of Engineering, Department of Telecommunication Systems.
    Fiedler, Markus
    Blekinge Institute of Technology, School of Engineering, Department of Telecommunication Systems.
    Testing the IQX Hypothesis for Exponential Interdependency between QoS and QoE of Voice Codecs iLBC and G.7112008Conference paper (Refereed)
    Abstract [en]

    Given the growing importance of quantitative relationships between user-perceived Quality of Experience (QoE) and network Quality of Service (QoS), this paper investigates the IQX hypothesis for two voice codecs, iLBC and G.711. This hypothesis expresses QoE as an exponential function of QoS degradation. The experiments are carried out in a controlled environment using the softphone SJPhone, the network emulator NIST Net, and a tool calculating the PESQ (Perceptual Evaluation of Speech Quality) from sent and received audio files. The IQX hypothesis is confirmed exactly for disturbances perceived on applications level, packet loss and packet reordering, which clearly correlate to the main sensitivities of the used softphone to packet-level disturbances such as loss, jitter and reordering. So, besides of providing a unified relationship between QoE and QoS, the IQX also proved to be capable of identifying the QoS parameters of relevance for QoE degradations. The study also points out interesting tracks for future work in terms of QoS degradations and related QoE evaluations.

104105106107108109110 5301 - 5350 of 13555
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf