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.
Results
Showing 1 to 20 of 187 for “"seats"”.
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An Ergonomic Evaluation of Aircraft Pilot Seats
… comfort in commercially available average pilot seats. Three pilot seats, which had the same material and similar adjustments but different physical attributes, and a universal classroom seat, with different material and no adjustments, were compared by 20 volunteers using subjective and …
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The mechanics of abrasion on concrete crosstie rail seats
… of forces and relative slip. Concrete rail seats and pad assemblies should be designed based on the considerations for mitigating the abrasion mechanism. The most feasible way of mitigating abrasion may be to reduce the amount of relative slip at the rail seat.
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Energy management of vehicle collision forces on automotive seats
An energy management system (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 …
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Objective assessment of static and dynamic seats under vehicular vibrations
… for performance assessment of automotive seats are reviewed. A comparative study of vibration transmission performance of the seats obtained with a number of subjects representing 50 th percentile male population and with an equivalent passive load is performed. The experimental results …
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Party positions and the seats/votes relationship with ideological voters
… re-election. Politicians seek to win their own seats in the legislature, but they must run under a common party label. In both single-member district and proportional representation systems, equilibrium platforms are shown to diverge substantially, with one party located near the 25th percentile …
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Health promotion initiative for booster seats: A school-based educational intervention.
The purpose of this study was to investigate the effect of a booster seat educational intervention on the purchasing/obtainment behavior of parents. A quasi-experimental methodology was utilized, including an educational seminar for parents and their children. Data analysis combined a mixed …
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Testing and Modeling of Shock Mitigating Seats for High Speed Craft
This study conducted a series of tests on a shock mitigating seat designed for high speed craft using various input excitations to better understand the relationship between various seat and operational conditions, and the response of the seat. A seat model of the test seat is used for a parametric …
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Field Study to Evaluate Driver Fatigue Performance in Air-Inflated Truck Seats
This study conducted a series of road tests in the regular fleet operations of a revenue service to better understand the relationship between vehicle seat design and driver fatigue, improve two newly proposed objective methods for evaluating driver fatigue, and provide design guidelines for …
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A Comparative Analysis of Air-inflated and Foam Seat Cushions for Truck Seats
… an air-inflated seat cushion designed for truck seats and a commonly used foam cushion is provided, using a single-axis test rig designed for dynamic seat testing. Different types of tests are conducted in order to evaluate various aspects of each type of cushion; in terms of their response to …
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Factors affecting the dynamic response of the body and the vibration transmitted through seats
… influence the vibration transmitted<br/>through seats. Previous studies have shown that the apparent mass of the body and seat<br/>transmissibility are affected by the seating environment (e.g. vibration input spectra, backrest,<br/>hands position, foot position) and variability between people …
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Evaluating reinforcement learning for game theory application learning to price airline seats under competition
Applied Game Theory has been criticised for not being able to model real decision making situations. A game's sensitive nature and the difficultly in determining the utility payoff functions make it hard for a decision maker to rely upon any game theoretic results. Therefore the models tend to be …
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A Phenomenological Qualitative Study of Sense of Community in an Inner-City Parochial School: Expanding the Seats at the Table.
<p>St. Angela’s School is an elementary school in the Austin area of Chicago. This phenomenological qualitative study examined Sense of Community (SOC) at St. Angela’s, operationalized as “<strong>The feeling that St. Angela School is welcoming, psychologically and physically safe, that I matter, I …
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Protection of Rear Seat Occupants Using Finite Element Analysis
… majority of car crash deaths occur in the front seats because the majority of occupants sit in the front seats. Traditionally, the rear seats were safer than the front seats because a front seated occupant would be closer to rigid structures such as the steering wheel, and they would be closer to …
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Redesign of the standard bicycle seat to prevent male impotence
Standard bicycle seats inflict injury to the perineum, the center for arteries and nerves feeding the penis, through repeated compression loading. Though harmless in low cycles of loading, the result for many high-mileage, male riders is sexual dysfunction. Recumbent bicycle seats prevent damage …
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Effects of Intervention on Booster Seat Purchase: A Field Study
… Children who are too large for child safety seats (a child restraint system for children from birth to 4 years old) are often restrained improperly or not at all. These children should be restrained in a booster seat which is a type of child safety seat designed for children who have out …
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'And the Sun Sits in His Seat': Creating Social Order in Andean Culture
This thesis addresses the role that seats and seating rituals play in the creation of social order in Andean South America. It begins by tracing the lineaments of a widespread South American macro-tradition of seats and stools. This provides a background to the analysis of a corpus of Manteno (AD …
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Advanced aircraft passenger seat : a qualitative and quantitative study of comfort
… build and evaluate improved aircraft passenger seats. The main focus was comfort. Two surveys were used to assess passenger needs for a more comfortable seat: in-flight activities and physical effects were the primary factors under considerations. The combination of these needs, airline needs …
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Developing Guidelines for Designing Child Safety Printed Educational Materials: A User-Centered Approach
… Children who are too large for child safety seats are often restrained improperly or not at all. In addition, many children are being shifted from child safety seats to adult safety belts prematurely. For proper protection, children who have outgrown child safety seats require booster seats …
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