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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Testing a Model to Predict Successful Clinical Information Systems

Garcia-Smith, Dianna January 2007 (has links)
Even though most clinical information systems (CIS) today are technically sound, the number of successful implementations of these systems is low. For that reason, understanding the characteristics and challenges for organizations implementing CIS is now considered key to successful information technology deployment (Lorenzi & Riley, 1997). Although theory driven information systems models and CIS studies exist, an integrated model to predict a successful CIS has not been evaluated. The purpose of this research was to evaluate the ability of a theoretically-based integrated model of CIS success (CISSM) to predict a successful CIS from the clinicians' perspective. Data were collected and analyzed from 234 registered nurses in 4 hospitals who had used the Cerner PowerChart Admission Health Profile (AHP) longer than 3 months. Construct validity and internal consistency reliability of the 23-item online instrument were established. The results of stepwise multiple regression analyses provided tentative support for the CISSM model.
2

Modelling the implementation and acceptance of the Police National Database in UK police forces

Lambri, Tessa January 2014 (has links)
The Police National Database (PND) was launched in June 2011 as a direct recommendation from the Bichard Inquiry. Its main purpose is to provide a national platform to share police information and for the first time, the PND will provide a single view of data held in police intelligence, custody, crime, child and domestic abuse systems across the UK. The PND will not replace local police systems, but it will allow all forces to see and share information - that until now has only been available within individual force boundaries.
3

Model postimplementačního chování uživatelů ERP systému / The model of ERP system users behavior in post-implementation phase

Bašus, Martin January 2010 (has links)
The master thesis deals with ERP implementation projects, especially in context of post-implementation phase. It examines the impact of user behavior on the realized benefits of the newly established information system. Important point of the thesis is the acceptance of the system by users and their resistance to change. Significant causal relationships with the potential to influence successfull ERP implementation are described. By using system dynamics approach the model is created and simulations are then carried out. Subsequently, the results are presented and analyzed.
4

The Role of Cognitive and Affective Change Readiness in the Adoption of Information Systems: A Multilevel Perspective

Ndicu, Martin J 11 August 2017 (has links)
Extant information systems literature has viewed systems acceptance and adoption from a technocentric viewpoint that emphasizes post-implementation intentions and attitudes - mainly usefulness and ease of use. Further, the effects of organizational hierarchy and work-environment factors have not been adequately factored largely because the single level user-level perspective has dominated. This dissertation addresses this gap by incorporating work environment factors while focusing on users’ preliminary, pre-implementation attitudes, perceptions, and intentions. It thus employs a multilevel perspective that allows for deeper insights into the interplay between workgroup- and individual-level phenomena. The objectives herein are, first, to illuminate change readiness as a plausible lens through which system acceptance and adoption can be viewed. Although change readiness is predominantly studied in organizational behavior, it has not yet been applied in information systems research. Consequently, it presents a promising approach to explore users’ responses to new systems. Secondly, this dissertation aims to empirically explore the multilevel nature of the change readiness constructs as envisaged in the framework of the antecedents and outcomes of change readiness. The research model is adapted from the multilevel framework of the antecedents and outcomes of change readiness as propounded by Rafferty et al. (2013). Appropriate hypotheses are developed and a survey instrument established to test those hypotheses. To ensure validity, preliminary investigations are conducted after an expert panel review. Subsequently, data was collected and analyzed to assess the extent to which the proposed model and hypotheses are empirically supported. Results and findings from this dissertation have theoretical and practical implications. Extant literature notes the dearth of research that theorizes outcomes of change readiness in the organizational behavior domain. This dissertation theorizes intention to adopt as an outcome of change readiness. Practice benefits from the context-based empirical results which (1) examine whether change readiness has any significant impact on system adoption and (2) the effect of workgroup change readiness on individual’s intention to adopt the system.
5

Users’ intention to systematically integrate healthcare information technology in a mandated context : A continuance perspective

Backe, Anton January 2017 (has links)
This thesis aimed to investigate the determinants of system satisfaction and the intention to systematically integrate a system from a continuous use perspective, where system use is mandatory. For this purpose, two identical questionnaires were distributed to collect data, 15 months apart. Respondents taking part in this study are healthcare multi-professionals who pertain to a work-group at an intensive care unit, at a large Swedish hospital. To evaluate the questionnaire data a research model was conceptualized, grounded in prior information system continuance research. It is also significantly influenced by the UMISC metamodel, conceptualized and suggested by Hadji & Degoulet (2016). The collected data was then analyzed using a two-stage analysis where one aspect was comparative, i.e., a comparison of the data between the two questionnaires, and the other was explorative, wherein research model constructs and their relations were evaluated. This analysis provided significant insight into the determinants of system satisfaction. However, regarding the determinants of the intention to systematically integrate as well as the research model itself, neither could be validated in this study. Nevertheless, these results allowed for a modified model to be conceptualized, with potentially promising results.
6

Adaptive Eyes

Wege, Claudia 10 April 2015 (has links) (PDF)
Technology pervades our daily living, and is increasingly integrated into the vehicle – directly affecting driving. On the one hand technology such as cell phones provoke driver distraction and inattention, whereas, on the other hand, Advanced Driver Assistance Systems (ADAS) support the driver in the driving task. The question is, can a driver successfully adapt to the ever growing technological advancements? Thus, this thesis aimed at improving safe driver behaviour by understanding the underlying psychological mechanisms that influence behavioural change. Previous research on ADAS and human attention was reviewed in the context of driver behavioural adaptation. Empirical data from multiple data sources such as driving performance data, visual behaviour data, video footage, and subjective data were analyzed to evaluate two ADAS (a brake-capacity forward collision warning system, B-FCW, and a Visual Distraction Alert System, VDA-System). Results from a field operational test (EuroFOT) showed that brake-capacity forward collision warnings lead to immediate attention allocation toward the roadway and drivers hit the brake, yet change their initial response later on by directing their eyes toward the warning source in the instrument cluster. A similar phenomenon of drivers changing initial behaviour was found in a driving simulator study assessing a Visual Distraction Alert System. Analysis showed that a Visual Distraction Alert System successfully assists drivers in redirecting attention to the relevant aspects of the driving task and significantly improves driving performance. The effects are discussed with regard to behavioural adaptation, calibration and system acceptance. Based on these findings a novel assessment for human-machine-interaction (HMI) of ADAS was introduced. Based on the contribution of this thesis and previous best-practices, a holistic safety management model on accident prevention strategies (before, during and after driving) was developed. The DO-IT BEST Feedback Model is a comprehensive feedback strategy including driver feedback at various time scales and therefore is expected to provide an added benefit for distraction and inattention prevention. The central contributions of this work are to advance research in the field of traffic psychology in the context of attention allocation strategies, and to improve the ability to design future safety systems with the human factor in focus. The thesis consists of the introduction of the conducted research, six publications in full text and a comprehensive conclusion of the publications. In brief this thesis intends to improve safe driver behaviour by understanding the underlying psychological mechanisms that influence behavioral change, thereby resulting in more attention allocation to the forward roadway, and improved vehicle control. / Technologie durchdringt unser tägliches Leben und ist zunehmend integriert in Fahrzeuge – das Resultat sind veränderte Anforderungen an Fahrzeugführer. Einerseits besteht die Gefahr, dass er durch die Bedienung innovativer Technologien (z.B. Mobiltelefone) unachtsam wird und visuell abgelenkt ist, andererseits kann die Nutzung von Fahrerassistenzsystemen die den Fahrer bei der Fahraufgabe unterstützten einen wertvollen Beitrag zur Fahrsicherheit bieten. Die steigende Aktualität beider Problematiken wirft die Frage auf: "Kann der Fahrer sich erfolgreich dem ständig wachsenden technologischen Fortschritt anpassen?" Das Ziel der vorliegenden Arbeit ist der Erkenntnisgewinn zur Verbesserung des Fahrverhaltens indem der Verhaltensänderungen zugrunde liegende psychologische Mechanismen untersucht werden. Eine Vielzahl an Literatur zu Fahrerassistenzsystemen und Aufmerksamkeitsverteilung wurde vor dem Hintergrund von Verhaltensanpassung der Fahrer recherchiert. Daten mehrerer empirischer Quellen, z. B. Fahrverhalten, Blickbewegungen, Videomitschnitte und subjektive Daten dienten zur Datenauswertung zweier Fahrerassistenzsysteme. Im Rahmen einer Feldstudie zeigte sich, dass Bremskapazitäts-Kollisionswarnungen zur sofortigen visuellen Aufmerksamkeitsverteilung zur Fahrbahn und zum Bremsen führen, Fahrer allerdings ihre Reaktion anpassen indem sie zur Warnanzeige im Kombinationsinstrument schauen. Ein anderes Phänomen der Verhaltensanpassung wurde in einer Fahrsimulatorstudie zur Untersuchung eines Ablenkungswarnsystems, das dabei hilft die Blicke von Autofahrern stets auf die Straße zu lenken, gefunden. Diese Ergebnisse weisen nach, dass solch ein System unterstützt achtsamer zu sein und sicherer zu fahren. Die vorliegenden Befunde wurden im Zusammenhang zu Vorbefunden zur Verhaltensanpassung zu Fahrerassistenzsystemen, Fahrerkalibrierung und Akzeptanz von Technik diskutiert. Basierend auf den gewonnenen Erkenntnissen wurde ein neues Vorgehen zur Untersuchung von Mensch- Maschine-Interaktion eingeführt. Aufbauend auf den Resultaten der vorliegenden Arbeit wurde ein ganzheitliches Modell zur Fahrsicherheit und -management, das DO-IT BEST Feedback Modell, entwickelt. Das Modell bezieht sich auf multitemporale Fahrer-Feedbackstrategien und soll somit einen entscheidenen Beitrag zur Verkehrssicherheit und dem Umgang mit Fahrerunaufmerksamkeit leisten. Die zentralen Beiträge dieser Arbeit sind die Gewinnung neuer Erkenntnisse in den Bereichen der Angewandten Psychologie und der Verkehrspsychologie in den Kontexten der Aufmerksamkeitsverteilung und der Verbesserung der Gestaltung von Fahrerassistenzsystemen fokusierend auf den Bediener. Die Dissertation besteht aus einem Einleitungsteil, drei empirischen Beiträgen sowie drei Buchkapiteln und einer abschliessenden Zusammenfassung.
7

Adaptive Eyes: Driver Distraction and Inattention PreventionThrough Advanced Driver Assistance Systems and Behaviour-Based Safety

Wege, Claudia 30 January 2014 (has links)
Technology pervades our daily living, and is increasingly integrated into the vehicle – directly affecting driving. On the one hand technology such as cell phones provoke driver distraction and inattention, whereas, on the other hand, Advanced Driver Assistance Systems (ADAS) support the driver in the driving task. The question is, can a driver successfully adapt to the ever growing technological advancements? Thus, this thesis aimed at improving safe driver behaviour by understanding the underlying psychological mechanisms that influence behavioural change. Previous research on ADAS and human attention was reviewed in the context of driver behavioural adaptation. Empirical data from multiple data sources such as driving performance data, visual behaviour data, video footage, and subjective data were analyzed to evaluate two ADAS (a brake-capacity forward collision warning system, B-FCW, and a Visual Distraction Alert System, VDA-System). Results from a field operational test (EuroFOT) showed that brake-capacity forward collision warnings lead to immediate attention allocation toward the roadway and drivers hit the brake, yet change their initial response later on by directing their eyes toward the warning source in the instrument cluster. A similar phenomenon of drivers changing initial behaviour was found in a driving simulator study assessing a Visual Distraction Alert System. Analysis showed that a Visual Distraction Alert System successfully assists drivers in redirecting attention to the relevant aspects of the driving task and significantly improves driving performance. The effects are discussed with regard to behavioural adaptation, calibration and system acceptance. Based on these findings a novel assessment for human-machine-interaction (HMI) of ADAS was introduced. Based on the contribution of this thesis and previous best-practices, a holistic safety management model on accident prevention strategies (before, during and after driving) was developed. The DO-IT BEST Feedback Model is a comprehensive feedback strategy including driver feedback at various time scales and therefore is expected to provide an added benefit for distraction and inattention prevention. The central contributions of this work are to advance research in the field of traffic psychology in the context of attention allocation strategies, and to improve the ability to design future safety systems with the human factor in focus. The thesis consists of the introduction of the conducted research, six publications in full text and a comprehensive conclusion of the publications. In brief this thesis intends to improve safe driver behaviour by understanding the underlying psychological mechanisms that influence behavioral change, thereby resulting in more attention allocation to the forward roadway, and improved vehicle control.:Abstract i Zusammenfassung iii List of included publications v Acknowledgements vii Previously published work ix Table of contents xi Preface xii 1 Chapter 1 Introduction 1 1.1 Outline 1 1.2 Objectives 2 1.3 Background 8 1.3.1 Behavioural adaption to ADAS 8 1.3.2 Driver distraction and inattention 9 2 Chapter 2 Paper I 23 3 Chapter 3 Paper II 47 4 Chapter 4 Paper III 61 5 Chapter 5 Paper IV 91 6 Chapter 6 Paper V 117 7 Chapter 7 Paper VI 143 8 Chapter 8 Conclusions and discussion 161 8.1. Contributions 161 8.2. Implications 171 8.3. Limitations and research needs 173 9 References 177 Curriculum Vitae 199 Eidesstattliche Erklärung 201 / Technologie durchdringt unser tägliches Leben und ist zunehmend integriert in Fahrzeuge – das Resultat sind veränderte Anforderungen an Fahrzeugführer. Einerseits besteht die Gefahr, dass er durch die Bedienung innovativer Technologien (z.B. Mobiltelefone) unachtsam wird und visuell abgelenkt ist, andererseits kann die Nutzung von Fahrerassistenzsystemen die den Fahrer bei der Fahraufgabe unterstützten einen wertvollen Beitrag zur Fahrsicherheit bieten. Die steigende Aktualität beider Problematiken wirft die Frage auf: "Kann der Fahrer sich erfolgreich dem ständig wachsenden technologischen Fortschritt anpassen?" Das Ziel der vorliegenden Arbeit ist der Erkenntnisgewinn zur Verbesserung des Fahrverhaltens indem der Verhaltensänderungen zugrunde liegende psychologische Mechanismen untersucht werden. Eine Vielzahl an Literatur zu Fahrerassistenzsystemen und Aufmerksamkeitsverteilung wurde vor dem Hintergrund von Verhaltensanpassung der Fahrer recherchiert. Daten mehrerer empirischer Quellen, z. B. Fahrverhalten, Blickbewegungen, Videomitschnitte und subjektive Daten dienten zur Datenauswertung zweier Fahrerassistenzsysteme. Im Rahmen einer Feldstudie zeigte sich, dass Bremskapazitäts-Kollisionswarnungen zur sofortigen visuellen Aufmerksamkeitsverteilung zur Fahrbahn und zum Bremsen führen, Fahrer allerdings ihre Reaktion anpassen indem sie zur Warnanzeige im Kombinationsinstrument schauen. Ein anderes Phänomen der Verhaltensanpassung wurde in einer Fahrsimulatorstudie zur Untersuchung eines Ablenkungswarnsystems, das dabei hilft die Blicke von Autofahrern stets auf die Straße zu lenken, gefunden. Diese Ergebnisse weisen nach, dass solch ein System unterstützt achtsamer zu sein und sicherer zu fahren. Die vorliegenden Befunde wurden im Zusammenhang zu Vorbefunden zur Verhaltensanpassung zu Fahrerassistenzsystemen, Fahrerkalibrierung und Akzeptanz von Technik diskutiert. Basierend auf den gewonnenen Erkenntnissen wurde ein neues Vorgehen zur Untersuchung von Mensch- Maschine-Interaktion eingeführt. Aufbauend auf den Resultaten der vorliegenden Arbeit wurde ein ganzheitliches Modell zur Fahrsicherheit und -management, das DO-IT BEST Feedback Modell, entwickelt. Das Modell bezieht sich auf multitemporale Fahrer-Feedbackstrategien und soll somit einen entscheidenen Beitrag zur Verkehrssicherheit und dem Umgang mit Fahrerunaufmerksamkeit leisten. Die zentralen Beiträge dieser Arbeit sind die Gewinnung neuer Erkenntnisse in den Bereichen der Angewandten Psychologie und der Verkehrspsychologie in den Kontexten der Aufmerksamkeitsverteilung und der Verbesserung der Gestaltung von Fahrerassistenzsystemen fokusierend auf den Bediener. Die Dissertation besteht aus einem Einleitungsteil, drei empirischen Beiträgen sowie drei Buchkapiteln und einer abschliessenden Zusammenfassung.:Abstract i Zusammenfassung iii List of included publications v Acknowledgements vii Previously published work ix Table of contents xi Preface xii 1 Chapter 1 Introduction 1 1.1 Outline 1 1.2 Objectives 2 1.3 Background 8 1.3.1 Behavioural adaption to ADAS 8 1.3.2 Driver distraction and inattention 9 2 Chapter 2 Paper I 23 3 Chapter 3 Paper II 47 4 Chapter 4 Paper III 61 5 Chapter 5 Paper IV 91 6 Chapter 6 Paper V 117 7 Chapter 7 Paper VI 143 8 Chapter 8 Conclusions and discussion 161 8.1. Contributions 161 8.2. Implications 171 8.3. Limitations and research needs 173 9 References 177 Curriculum Vitae 199 Eidesstattliche Erklärung 201

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