Sökning: "Gap acceptance"

Visar resultat 1 - 5 av 32 avhandlingar innehållade orden Gap acceptance.

1. 1. Vehicle-vehicle Interactions at Roundabouts and their Implications for the Entry Capacity - A Methodological Study with Applications to Two-lane Roundabouts

   Författare :Ola Hagring; Trafik och väg; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Samhällsvetenskaper; Social sciences; maximum likelihood; headways; critical gaps; driver behaviour; capacity; Gap acceptance; two-lane roundabouts; Technological sciences; Teknik;

   Sammanfattning : Problem: The thesis deals with the capacity of two-lane roundabouts and with vehicle-vehicle interactions there. Method: The interactions and the corresponding capacity are modelled by gap-acceptance theory. LÄS MER

3. 2. Mimic: A Microscopic Simulation Model for Rural Road Traffic

   Författare :Stig O. Simonsson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; computer model; time headway; log normal distribution; Chi-Square test; gap-acceptance; rural road network; car-following; traffic simulation model; alignment; sight distance; Kolmogorov-Smirnoff test; software system; statistics;

   Sammanfattning : The purpose of this dissertation is to outline the theoretical basis of a road traffic simulation model, named Mimic, that constitutes the key elements of a system for estimating road user effects and environmental impacts. The simulation model suggested is a microscopic road traffic simulation model and it is structured to be used for networks of rural roads. LÄS MER

4. 3. Studies for the Low Emittance MAX-IV Storage Rings

   Författare :Hamed Tarawneh; Lunds universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fysik; Physics; Touschek losses; energy acceptance; dynamic aperture; Lattice; emittance;

   Sammanfattning : This thesis discusses the feasibility of a low emittance lattice proposed for the MAX-IV storage rings. The MAX-IV facility will have two storage rings that are identical but operated at two different energies, 1.5 GeV for soft X-ray and 3 GeV for hard X-ray production. LÄS MER

5. 4. Developing Internet Interventions to Improve Psychosocial Outcomes in Breast Cancer Survivors : Attitudes and practices in Portuguese cancer settings

   Författare :Cristina Mendes Santos; Gerhard Andersson; Elisabete Weiderpass; Rui Santana; Irma Verdonck-de Leeuw; Linköpings universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Acceptance and Commitment Therapy ACT ; Attitudes; Breast cancer Survivors; Cognitive Behavioural Therapy CBT ; Digital Mental Health; Internet interventions; Usability; User-centred design; Acceptance and Commitment Therapy ACT ; Attityder; Bröstcanceröverlevande; Kognitiv beteendeterapi KBT ; Digital psykisk hälsa; Internebehandling; Användbarhet; Användarcentrerad design.;

   Sammanfattning : Background: Despite the psychosocial treatment gap in cancer settings and the significant body of evidence on the efficacy and cost-effectiveness of internet interventions, research targeting Breast Cancer Survivors (BCS) is scant, and implementation in clinical settings is limited. While the reasons for this research and implementation gaps are multifactorial, including funding, technical and organizational barriers, the attitudes of the distinct stakeholders in the internet interventions’ ecosystem have been posited to play an important role in this regard. LÄS MER

7. 5. Using False Alarms when Developing Automotive Active Safety Systems

   Författare :Jan-Erik Källhammer; Erik Hollnagel; Kip Smith; Klaus Bengler; Linköpings universitet; []
   Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : This thesis develops and tests an empirical method to quantifying drivers’ level of acceptance for alerts issued by automotive active safety systems. The method uses drivers’ subjective level of acceptance for alerts that are literally false alarms as a measure to guide the development of alerting criteria that can be used by active safety systems. LÄS MER