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 24 for “"vehicle collision"”.
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Energy management of vehicle collision forces on automotive seats
… (EMS) was designed to minimize front and rear collision forces experienced by the occupants of automotive vehicles by at least 50%. The EMS is a hydraulic damper consisting of a control valve, a pressure operated directional control valve, and a hydraulic cylinder. The system operates entirely …
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Sensor Fusion Algorithm for Airborne Autonomous Vehicle Collision Avoidance Applications
… any aircraft is to be able to detect potential collisions with other airborne objects, and maneuver to avoid these collisions. This can be done by utilizing sensors on the aircraft to monitor the sky for collision threats. However, several problems face a system which aims to use multiple …
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The Effects of Child Restraint System Use and Motor Vehicle Collision Severity on Injury Patterns and Severity in Children 8 Years Old and Younger.
Motor vehicle collisions (MVCs) are a leading cause of injury and death for children under the age of 14 years in North America. Children, eight years old or younger, are required to use a child restraint system (CRS) when travelling in a vehicle in Canada. In the present study, the hypothesis that …
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Behavior of hollow-core fiber reinforced polymer-concrete-steel bridge columns under extreme loading
… presented to help implement this new technology. Vehicle collision with RC and HC-FCS bridge columns was also presented in this study using LS-DYNA software. The first equation for estimating the equivalent static force of the vehicle collision, based on the vehicle's mass and velocity, was …
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Front underride protection devices: methods for design and testing
… demand. One of the most severe instances of vehicle collision occurs as a result of vehicle weight and sizing mismatch. The fitment of Front Underride Protection Devices (FUPDs) upon tractor-trailers is studied as a method to improve crash compatibility between passenger vehicles and …
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Motor Vehicle Collisions in London, Ontario: Estimating the influence of the built environment and children’s potential exposure
Motor vehicle collisions are the leading cause of death for children and youth worldwide. To effectively target interventions to improve child safety, it is necessary to identify where motor vehicle collisions occur most often and what factors make these areas more hazardous. Study #1 maps …
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The development of evidence-based guidelines to inform the extrication of casualties trapped in motor vehicles following a collision
Background Motor vehicle collisions (MVCs) are a common cause of injury and death throughout the world. Following an MVC some patients will remain in their vehicles due to injury, the potential for injury or physical obstruction. Extrication is the process of removing injured or potentially injured …
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Street typology and bicyclist safety : a systems approach
… has been treated for cyclists, both in terms of collision rate and fraction of collisions that are severe. For each city, I use cyclist count data with police-reported bicycle-motor vehicle collision data to compute relative collision rates for pairs of parallel streets that are alternate routes …
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Repair of Impact-Damaged Prestressed Bridge Girders Using Strand Splices and Fabric Reinforced Cementitious Matrix
… an overpass bridge girder due to an overheight vehicle collision. Collision damage to bridges can range from minor to catastrophic, potentially requiring repair or replacement of a bridge girder. This thesis investigates the performance of two different types of repair methods for flexural …
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Three-Dimensional, Vision-Based Proportional Navigation for UAV Collision Avoidance
… of potential applications for Unmanned Aerial Vehicles (UAVs) keeps rising steadily, the chances that these devices will operate in close proximity to static or dynamic obstacles also increases. Therefore, collision avoidance is an important challenge to overcome for Unmanned Aerial Vehicle …
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Conservation of vervets, Africa’s most ubiquitous primates
… almost 200 vervets over a decade, some injured (vehicle collision, shooting), most orphan infants. Combined these results imply that, while vervets are common and adaptable, they face a plethora of anthropogenic risks because of their ability to exploit human-altered environments. It suggests we …
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A Generalized Two-Dimensional Model to Reconstruct the Impact Phase in Automobile Collisions
… the computer model in a given accident scenario. Vehicle collision analysis techniques generally separate the collision into three phases: pre-impact, impact, and post impact. The intent of the research is to provide a generalized model to reconstruct two dimensional impact problems in the area of …
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Intent-aware collision avoidance for autonomous marine vehicles
Applications of autonomous marine vehicles in dynamic and uncertain environments continuously grow as research unveils new enabling technology and academic, commercial, and government entities pursue new marine autonomy concepts. The safe operation of these vehicles in the marine domain, which is …
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Observations on the breeding ecology of burrowing Owls in Saskatchewan
… nest failures and higher nestling mortality. Vehicle collision accounted for 37 percent of the known morta1ity. Predation accounted for 41 percent, a1though it can be assumed that most victims of predation were never recovered. Loss of breeding habitat and lack of burrow availability is …
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Channel Propagation Model for Train to Vehicle Alert System at 5.9 GHz using Dedicated Short Range Communication
The most common railroad accidents today involve collisions between trains and passenger vehicles at railroad grade crossings [1][2]. Due to the size and speed of a train, these collisions generally result in significant damage and serious injury. Despite recent efforts by projects such as …
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Pedestrian Safety in Peru: The role of visible signalization, transit stops and other features of the built environment
… of the walking environment and pedestrian-motor vehicle collisions (PMVCs). <bold>Methods:</bold> A matched case-control study design was used where the objects of study were crossing locations. A two stage cluster sample was used to select eleven police commissaries in Lima, Peru for study. Case …
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Movement and Mortality of White-tailed Deer in Southwest Minnesota
… and cause-specific mortality (e.g., hunting, vehicle collision, predation, disease) of white-tailed deer in southwest Minnesota. Secondary objective was to estimate seasonal home ranges. During 2001-02, radio telemetry was used to monitor the movement and mortality of 61 adult (>1 year at …
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Survival of Male Merriam's Wild Turkeys in the Northern Black Hills of South Dakota
… crippling loss, weather-related mortalities, one vehicle collision and other unknown sources. Spring harvest was the primary source of mortality for marked males in the northern Black Hills (34%) during this study. Fall harvest accounted for 7% and an additional 7% was attributed to crippling …
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Finite Element Analysis of the Effect of Low-Speed Rear End Collisions on the Medial Meniscus
<p>Low-speed, rear end vehicle collisions can inflict soft tissue damage to the passenger’s knees, especially the medial meniscus, which has been previously unexplained in published literature. It is difficult to determine if factors such as age or other injury was the primary cause of the injury …
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Suicide in South Australia: specific features, trends and reasons for disparities in numbers
Suicide constitutes a significant and yet under-recorded component of preventable mortality in many communities. Prevalent methods of suicide vary over time, and are influenced by the availability of noxious agents as well as ideas of what constitutes lethal techniques. Despite indications of …
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