Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"Evacuation time"”.
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Time-efficient Evacuation Routing Algorithm Incorporating Contraflow
… situations such as hurricane Sandy, an effective evacuation plan possibly with contraflows is required. In order to achieve an effective evacuation plan, evacuation time and computation time need to be short. In this thesis two aspects of evacuation algorithms are discussed: minimum time …
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Analytical model for staging emergency evacuations
… population density is centered on the efficient evacuation of people and possibly goods. Developing evacuation plans suitable for different levels of urgency based on the intensity of threat is a challenging task. In case of densely populated cities (e.g., New York, Los Angeles), the level of …
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The Effects of Carry-on Baggage on Aircraft Evacuation Efficiency
<p>The most frequent obstacle of an aircraft evacuation is the passengers carrying baggage while evacuating. Passengers who insist on taking their carry-on baggage during an emergency evacuation not only slow down the evacuation process but also act as a significant risk to the safety of other …
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An Aircraft Evacuation Simulation Baseline Using DES for Passenger Path Planning
… (DES) model that simulates passengers’ evacuation paths and decision-making processes during aircraft certification. The model was built using ARENA® 14, which is a DES simulation tool. This model used A380 cabin configuration with capacity of 538 passengers. Each passenger was …
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Comparison of Microscopic and Mesoscopic Traffic Modeling Tools for Evacuation Analysis
Evacuation processes can be evaluated using different simulation models. However, recently, microscopic simulation models have become a more popular tool for this purpose. The objectives of this study are to model multiple evacuation scenarios and to compare the INTEGRATION microscopic traffic …
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An Integrated Agent-Based Microsimulation Model for Hurricane Evacuation in New Orleans
Mass evacuation of urban areas due to hurricanes is a critical problem that requires extensive basic and applied research. Knowing the accurate evacuation time needed for the entire region in advance such that the evacuation order can be issued on a timely basis is crucial for the officials. …
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Game day emergency: a flow and vector based GIS stadium evacuation model
… of Homeland Security has deemed anti-terrorism evacuation planning and simulation critically important for sport stadium security. In this study, a flow based geographic information system (GIS) vector evacuation model was built in ArcMap. The model was developed to compute a total evacuation …
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Agent-based Modeling of Emergency Building Evacuation
<p>Panic during emergency building evacuation can cause crowd stampede, resulting in serious injuries and casualties. Agent-based methods have been successfully employed to investigate the collective human behavior during emergency evacuation in cases where the configurational space is extremely …
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Evacuation of Special Facilities
… been studied. The focus has mostly been on the evacuation of hospitals. For the hospital evacuation planner, it is necessary to know how long it would take to evacuate the premises. To approach this problem, the entire evacuation process has been modeled as a queuing situation using a simulation …
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Fire modelling of passenger trains
… and emerging hazards to ensure sufficient time is available for safe evacuation. This study investigates fire growth and tenability conditions in a single passenger carriage through numerical modelling using Fire Dynamics Simulator (FDS). Generic material properties have been incorporated …
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Emergency evacuation around nuclear power stations: a systems approach
Prior to this work, MASSVAC (MASS eVACuation) had evolved as a micro-computer simulation model for analysis and evaluation of areas facing natural disasters (hurricanes and floods). Conceptual and technical enhancements have been made to procedures within MASSVAC to deal with the special problems …
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Using Incumbent Channel Occupancy Prediction to Minimize Secondary License Grant Revocations
… as identified in recent field trials is the timebound evacuation of unlicensed secondary users from a frequency band by the SAS on the arrival of an incumbent user. In this thesis, we propose a way to optimize the evacuation process by reducing the number of secondary spectrum grant …
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Towards Efficient Autonomous Vehicle Systems: A Multi-Layer Approach
… achieves up to 16.3% reduction in intersection evacuation time and 27.7% improvement in traffic efficiency. At the application layer, a 1-opt local search-based scheduling framework is proposed for non-preemptive real-time Directed Acyclic Graph (DAG) tasks. Using convex subspace partitioning …
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GPGPU enabled CFD simulation for fully coupled fire and evacuation modelling
Traditionally fire and evacuation models are run independently of one another to ascertain two key building safety parameters: ASET (available safe evacuation time) determined by the fire spread; RSET (required safe exit time) determined by the evacuation model. A building can be deemed to be safe …
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Modelización computacional del ensayo de evacuación de emergencia de aviones de transporte
… demostrativos por cálculos fundamentados que estimen los diferentes tiempos componentes del ensayo de evacuación. Para entender este proceso, en esta tesis se procede a abordar su análisis teórico riguroso, su modelización minuciosa y por último, aunque no menos importante, la construcción de …
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Heuristic Prioritization Of Emergency Evacuation Staging To Reduce Clearance Time
A region's evacuation strategy encompasses a variety of areas and needs. Primary among these is the minimization of total evacuation time, represented in models as the clearance time estimate (CTE). A generic testbed simulation network model was developed. An input/output (I/O) analysis was …
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La evacuación del buque de guerra : estudio del movimiento de personal en situaciones de emergencia
… emplear modelos de simulación, como maritime EXODUS, para estimar el tiempo de evacuación e identificar este tipo de problemas. En este tipo de modelos son de gran importancia los datos y parámetros empleados ya que, en gran medida, el tiempo calculado depende de ellos. Finalmente, y a …
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Bioinspired microvascular self-healing in polymers and composites
… for uniform catalyst incorporation lower both evacuation time and residual mass in comparison to early sacrificial monofilament. Melt-spun fibers for weaving and extruded filaments for 3D printing via fused deposition modeling provide a new suite of sacrificial PLA templates. Integration of …
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Analysis and Evaluation of Household Pick-up and Gathering Behavior in No-Notice Evacuations
… incidents occur with no advance notice of time and place. Family members may be separated when a no-notice incident strikes during the daytime. They may seek to gather the household members first and evacuate as a unit, and parents may head in the "wrong" direction to pick up their children …
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Model reduction of Markov chains with applications to building systems
… in information theoretic terms for the first time. This result leads to a practical recursive model-reduction algorithm based on spectral analysis, and a limited set of error bounds for the model reduction of Markov chains. Besides using the spectral method, a simulation-based method is also …
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