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 9 of 9 for “"in-seat"”.
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The Effects of Therapy Balls on In-Seat and On-Task Behavior in Young Children
This study utilized an alternating treatment design to study the effects of therapy balls, chairs, and the element of choice on the in-seat and on-task behaviors of three, preschool-aged children. Participants were between 4 and 5 years old, typically developing, and were selected based on their …
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An Empirical Study of Measurement Error Using Partial Interval, Whole Interval, and Momentary Time-Sample Recording Methods
The problem. An examination was made of the effect varying Session Response Duration, Mean Individual Response Duration, and length of recording interval on the accuracy of data using whole interval, partial interval, and momentary time-sample methods. The Session Response Duration was defined as …
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Effects of image distance and seat inclination on the line-of- sight angle
The line-of-sight angle (LOSA) was investigated for a simple tracking task. The distance from the eyes of the subject to the image was varied through the use of optical lenses. The subject was seated in a chair with 5 different back angles: 90 degrees, 111.6 degrees, 125 degrees, 158.5 degrees, and …
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Advanced aircraft seat design : the webbing concept
Air travel is so common in this day and age that any significant improvement in seat comfort on board a commercial passenger jet is likely to affect almost everybody. A proposed design concept in this project is the use of webbing as the substitute for current foam cushioning in the seat back. The …
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Examining the Effect of Positive Greetings at the Door on Student Academic Engagement and Disruptive Behavior
<p>Positive Greetings at the Door (PGD) is a proactive classroom management strategy designed to assist students’ transitioning from a non-academic environment (e.g., physical education, lunch, hallway) to an academic environment (e.g., classroom instruction). PGD can prepare students to engage in …
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The effects of group relaxation training sessions utilizing the turtle technique upon the observed overactive behavior in preschool children
The general purpose of this study was to investigate the effectiveness of using relaxation training utilizing the Turtle Technique as developed by Schneider and Robin (1975) to teach preschool children to control their overactive behaviors. The specific purpose was to determine whether hyperactive …
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Multidisciplinary Design Optimization of a Strut-Braced Wing Aircraft
The objective of this study is to use Multidisciplinary Design Optimization (MDO) to investigate the use of truss-braced wing concepts in concert with other advanced technologies to obtain a significant improvement in the performance of transonic transport aircraft. The truss topology introduces …
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GaN Device Characterization, Converter Optimization and Development for Enhanced Aviation Systems
GaN device is one of the most promising candidates in high-efficiency and high-density power conversion applications. Due to the low ON-Resistance GaN devices are widely adopted in various soft-switching converters. Based on superior Baliga's Figure of Merit, GaN devices also have advantages over …
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Study of Occupant Model Capability to Quantify Injury Risk for eVTOL Vehicles
… at The National Aeronautics and Space Administration (NASA) Langley Research Center (LaRC) previously conducted a full-scale crash test of a Fokker F28 MK1000 aircraft to study occupant injury risks. The goal of the current study was to investigate the injury predictions of the Global …