The Experts below are selected from a list of 6171 Experts worldwide ranked by ideXlab platform
Chihsheng Chou - One of the best experts on this subject based on the ideXlab platform.
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modeling and performance assessment of a transit based Evacuation Plan within a contraflow simulation environment
Transportation Research Record, 2009Co-Authors: Chengchieh Chen, Chihsheng ChouAbstract:A bilevel optimization model is used to determine the waiting locations and corresponding shelters—in the case study, a combinatorial problem between bus stops and Metro stations—of a transit-based emergency Evacuation Plan and dispatch rescue buses toward the combinatorial locations. In additional, a contraflow simulation is elaborated to disperse the inside and ambient traffic of the target area. Results from the simulation can be used for modifying routing Plans to avoid potential traffic bottlenecks. Findings indicate that the transit-based Evacuation Plan with the contraflow operations outperforms the same base Plan without the contraflow operations. If more people select to evacuate via transit systems, the difficulties of dispersing traffic would be reduced and system performance remarkably improved.
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incorporating contra flow simulation into a transit based emergency Evacuation Plan
15th World Congress on Intelligent Transport Systems and ITS America's 2008 Annual MeetingITS AmericaERTICOITS JapanTransCore, 2008Co-Authors: Chengchieh Chen, Chihsheng ChouAbstract:This paper presents a transit-based emergency response Plan that can be used to determine the optimal conditions between waiting positions (i.e., bus stops) and corresponding shelters (i.e., metro stations) in situations of natural and man-made disasters. The authors emphasize the need for comprehensive Planning proactively for prompt and vigorous transportation actions. They propose an improved vehicle routing algorithm that can be used to dispatch rescue vehicles toward above combinatorial locations. Additionally, a contraflow simulation model is elaborated to disperse the evacuating vehicles inside the target area and the ambient traffic. This model is applied to a real-world case study in College Park, Maryland (United States). The authors stress that the usefulness of the simulation results can be greatly increased by providing information about the potential bottlenecks to managers so that the vehicle routing results can be re-optimized. Since transit systems can provide many benefits, including better evacuating ability, lower occupancy of road segments, and less traffic chaos and congestion, the authors conclude by encouraging Planners, managers, and policy-makers to adopt a transit-based approach to emergency Evacuation.
Chengchieh Chen - One of the best experts on this subject based on the ideXlab platform.
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modeling and performance assessment of a transit based Evacuation Plan within a contraflow simulation environment
Transportation Research Record, 2009Co-Authors: Chengchieh Chen, Chihsheng ChouAbstract:A bilevel optimization model is used to determine the waiting locations and corresponding shelters—in the case study, a combinatorial problem between bus stops and Metro stations—of a transit-based emergency Evacuation Plan and dispatch rescue buses toward the combinatorial locations. In additional, a contraflow simulation is elaborated to disperse the inside and ambient traffic of the target area. Results from the simulation can be used for modifying routing Plans to avoid potential traffic bottlenecks. Findings indicate that the transit-based Evacuation Plan with the contraflow operations outperforms the same base Plan without the contraflow operations. If more people select to evacuate via transit systems, the difficulties of dispersing traffic would be reduced and system performance remarkably improved.
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incorporating contra flow simulation into a transit based emergency Evacuation Plan
15th World Congress on Intelligent Transport Systems and ITS America's 2008 Annual MeetingITS AmericaERTICOITS JapanTransCore, 2008Co-Authors: Chengchieh Chen, Chihsheng ChouAbstract:This paper presents a transit-based emergency response Plan that can be used to determine the optimal conditions between waiting positions (i.e., bus stops) and corresponding shelters (i.e., metro stations) in situations of natural and man-made disasters. The authors emphasize the need for comprehensive Planning proactively for prompt and vigorous transportation actions. They propose an improved vehicle routing algorithm that can be used to dispatch rescue vehicles toward above combinatorial locations. Additionally, a contraflow simulation model is elaborated to disperse the evacuating vehicles inside the target area and the ambient traffic. This model is applied to a real-world case study in College Park, Maryland (United States). The authors stress that the usefulness of the simulation results can be greatly increased by providing information about the potential bottlenecks to managers so that the vehicle routing results can be re-optimized. Since transit systems can provide many benefits, including better evacuating ability, lower occupancy of road segments, and less traffic chaos and congestion, the authors conclude by encouraging Planners, managers, and policy-makers to adopt a transit-based approach to emergency Evacuation.
Andrea Vasquez - One of the best experts on this subject based on the ideXlab platform.
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children s views on Evacuation drills and school preparedness mapping experiences and unfolding perspectives
International journal of disaster risk reduction, 2018Co-Authors: Andrea Vasquez, Katitza Marinkovic, Margarita Bernales, Jorge Leon, Juan Gonzalez, Sebastian CastroAbstract:Abstract Introduction and purpose of this study Colegio Ingles is the largest and oldest school in the city of Iquique, the capital of Chile's northern Tarapaca Region. In accordance with the School Evacuation Plan, a drill was held in 2013 with the entire student body (n = 1600). The majority of the students had experienced the 2014 Pisagua earthquake. Considering the school's exposure to natural disasters and the experience of its students, we studied the perspectives of k-12 students relative to their school's Evacuation Plan for a major disaster, such as an earthquake and a tsunami. Materials and methods The study applied a qualitative methodology for in-depth exploration and insight into the students’ perceptions of the school Evacuation Plan. The methods applied were: (i) focus groups and (ii) individual mapping exercises. The participants recruited (n = 31), included children between the ages of 11 and 18 years old. The collected information was analyzed through a thematic analysis using NVivo 11 software. Results The results flagged significant issues that had not been considered during the development of the school Evacuation Plan, such as the family dimension, which in some cases is contradictory with the school Evacuation Plan, as well as the need of redefining the safe zones from a multidimensional perspective. Conclusions More participation from children in the local Planning of the school Evacuation Plan was seen as necessary in order to strengthen their preparedness in case of disaster, integrating their school Evacuation Plan and their family ones.
Chingwu Chu - One of the best experts on this subject based on the ideXlab platform.
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a system simulation model for a training ship Evacuation Plan
Journal of Marine Science and Technology, 2016Co-Authors: Chian Liou, Chingwu ChuAbstract:Evacuation techniques for land buildings have been applied to passenger ships in maritime transportation. However, real and full-scale Evacuation drills on a passenger ship are difficult to execute because of their high cost. Therefore, the purpose of this study is to present a system simulation model for developing an Evacuation Plan of a training ship by minimizing the total Evacuation time. In our model, Evacuation time can be expressed as a function of three variables: (1) walking speed, (2) the number of cadets turning to the left or right at T junctions, and (3) the number of cadets moving forward or aft in the corridors. We propose modifications to existing hydraulic model to incorporate human factors. We use Intel Visual Fortran Compiler to code the proposed model which is applied to a case study to show the advantage of System Simulation. In addition, the results have been checked for validity. Thus, the implications of this study may be valuable for developing an Evacuation Plan for a passenger ship.
Sebastian Castro - One of the best experts on this subject based on the ideXlab platform.
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children s views on Evacuation drills and school preparedness mapping experiences and unfolding perspectives
International journal of disaster risk reduction, 2018Co-Authors: Andrea Vasquez, Katitza Marinkovic, Margarita Bernales, Jorge Leon, Juan Gonzalez, Sebastian CastroAbstract:Abstract Introduction and purpose of this study Colegio Ingles is the largest and oldest school in the city of Iquique, the capital of Chile's northern Tarapaca Region. In accordance with the School Evacuation Plan, a drill was held in 2013 with the entire student body (n = 1600). The majority of the students had experienced the 2014 Pisagua earthquake. Considering the school's exposure to natural disasters and the experience of its students, we studied the perspectives of k-12 students relative to their school's Evacuation Plan for a major disaster, such as an earthquake and a tsunami. Materials and methods The study applied a qualitative methodology for in-depth exploration and insight into the students’ perceptions of the school Evacuation Plan. The methods applied were: (i) focus groups and (ii) individual mapping exercises. The participants recruited (n = 31), included children between the ages of 11 and 18 years old. The collected information was analyzed through a thematic analysis using NVivo 11 software. Results The results flagged significant issues that had not been considered during the development of the school Evacuation Plan, such as the family dimension, which in some cases is contradictory with the school Evacuation Plan, as well as the need of redefining the safe zones from a multidimensional perspective. Conclusions More participation from children in the local Planning of the school Evacuation Plan was seen as necessary in order to strengthen their preparedness in case of disaster, integrating their school Evacuation Plan and their family ones.
