Validation of a multimodal travel simulator with travel information provision

2007 ◽  
Vol 15 (3) ◽  
pp. 191-207 ◽  
Author(s):  
Caspar G. Chorus ◽  
Eric J.E. Molin ◽  
Theo A. Arentze ◽  
Serge P. Hoogendoorn ◽  
Harry J.P. Timmermans ◽  
...  
Author(s):  
Peng Liu ◽  
Yang Liu

This paper aims to study the effects of travel information provision on risk-averse travelers when travel time is uncertain. A stochastic bottleneck model is examined with risk-averse commuters, in which the free-flow travel time is assumed to be uncertain and follows a uniform distribution. A mean-variance approach is adopted to measure the travel cost under risk. It is proven that the individual travel cost at bottleneck equilibrium monotonically increases with the risk-aversion level. With a higher risk-aversion level, the morning peak hour starts earlier, but the duration of the peak hour remains constant regardless of the risk-aversion level. If improvement in information quality can reduce the travel time uncertainty, risk-averse commuters will benefit from the higher quality of information. Nevertheless, when the cost of information provision is also considered, the optimal information provision strategy is derived to minimize the total system cost. The numerical examples demonstrate the information efficiency and provision strategy. The findings reveal the congestion patterns of a stochastic bottleneck with risk-averse travelers and will guide us to provide appropriate travel information.


2017 ◽  
Vol 6 (2) ◽  
pp. 129-150 ◽  
Author(s):  
Chenfeng Xiong ◽  
Zheng Zhu ◽  
Xiqun Chen ◽  
Lei Zhang

MIS Quarterly ◽  
2017 ◽  
Vol 41 (3) ◽  
pp. 867-892 ◽  
Author(s):  
Mengxiang Li ◽  
◽  
Chuan-Hoo Tan ◽  
Kwok-Kee Wei ◽  
Kanliang Wang ◽  
...  

Author(s):  
Stephen Marsh

Information retrieval finds itself at an interesting juncture, where the amount of information that is available to people increases every day from its already bewildering limit. The problem is how to get the information we need in a timely and efficient fashion, without delivering useless or unwanted information. Current Web-Based IR systems do their best, but they will find it increasingly. . .


2018 ◽  
Vol 68 (suppl 1) ◽  
pp. bjgp18X697349
Author(s):  
Anna Lalonde ◽  
Emma Teasdale ◽  
Ingrid Muller ◽  
Joanne Chalmers ◽  
Peter Smart ◽  
...  

BackgroundCellulitis is a common painful infection of the skin and underlying tissues that recurs in approximately a third of cases. Patients’ ability to recover from cellulitis or prevent recurrence is likely to be influenced by their understanding of the condition.AimTo explore patients’ perceptions of cellulitis and their information needs.MethodMixed methods study comprising semi-structured, face-to-face interviews and cross-sectional survey, recruiting through primary care, secondary care and advertising. Adults aged 18 or over with a history of cellulitis (first or recurrent) were invited to complete a survey, take part in an interview or both. Qualitative data was analysed thematically.ResultsThirty interviews were conducted between August 2016 and July 2017. Qualitative data revealed low prior awareness of cellulitis, uncertainty around diagnosis, concern/surprise at the severity of cellulitis, and perceived insufficient information provision. People were surprised they had never heard of the condition and that they had not received advice or leaflets giving self-care information. Some sought information from the internet and found this bewildering. Two hundred and forty surveys were completed (response rate 17%). These showed that, while most people received information on the treatment of cellulitis (60.0%, n = 144), they reported receiving no information about causes (60.8%, n = 146) or prevention of recurrence (73.3%, n = 176).ConclusionThere is a need for provision of basic information for people with cellulitis, particularly being informed of the name of their condition, how to manage acute episodes, and how to reduce risk of recurrence.


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