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Single piles and pile groups are frequently subjected to high lateral forces. The safety and functionality of many structures depends on the ability of the supporting pile foundation to resist the resulting lateral forces. In the analysis and design of laterally loaded piles, two criterions usually govern. First, the deflection at the working load should not be so excessive as to impair the proper function of the supporting member. Second, the ultimate strength of the pile should be high enough to take the load imposed on it under the worst loading condition. Typically, pile length, pile section, soil type, and pile restraint dictate the analysis. This paper presents different methods, specifically Broms' method and the p-y method, for both the analysis and design of laterally loaded single piles. Both linear and nonlinear analyses are considered. The measured results of several full-scale field tests performed by Lymon Reese are compared to computed results using Broms' method of analysis and the p-y method of analysis. Observations are made as to the correlation between the results and recommendations are made as to the applicability of the accepted methods for the analysis and design of laterally loaded piles.

The lateral cephalometric radiography is an essential tool in clinical practice, especially in the area of orthodontics, allows measurements to investigate the development and growth of the facial skeleton , aiding in the diagnosis and treatment plan for each patient. The first type of radiography was the conventional were used and the development of technology has evolved to be digital . The purpose of this study was to compare the geometric distortion of digital lateral cephalometric with conventional cephalometric in human cadaver skulls . The sample was taken for convenience and was composed of 21 human cadavers dry skulls, three markers were placed on each skull lead. The first marker was at the level of the junction of the sutures sphenofrontal, coronal , flaky and sphenosquamosa and parallel to the Frankfort plane . The second one below the frontozygomatic suture and the last at the branch level of the jaw and positioned in the concave part of the line above and parallel to the Frankfort plane . No significant differences were found when comparing the measurements of conventional and digital plates in the upper and middle third, but when the last third was analyzed differences were found between conventional and digital images . All the images presented distortion when they were compared with the gold standard. / La telerradiografía lateral es una herramienta esencial en la práctica clínica especialmente en el área de ortodoncia, nos permite realizar mediciones para investigar el desarrollo y crecimiento del esqueleto facial, ayudando en el diagnóstico y plan de tratamiento de cada paciente. El primer tipo de radiografía utilizada fueron las convencionales y con el desarrollo de la tecnología, fue evolucionando hasta ser digital. El propósito de este estudio fue comparar la distorsión geométrica de la telerradiografía lateral digital con la telerradiografía convencional en cráneos de cadáveres humanos. La muestra fue tomada por conveniencia, siendo conformada por 21 cráneos secos de cadáveres humanos, se le colocaron tres marcadores de plomo a cada cráneo. El primer marcador estuvo a nivel de la unión de las suturas esfenofrontal ,coronal, escamosa y esfenoescamosa y paralelo al plano de Frankfort. El segundo debajo de la sutura frontocigomática y el último a nivel de la rama de la mandíbula y posicionado en la parte más cóncava de la línea anterior y paralela al plano de Frankfort. No se hallaron diferencias significativas al comparar las medidas de las placas convencionales y digitales en el tercio medio y superior, pero al analizar el tercer tercio si se hallaron diferencias entre las imágenes convencionales y digitales. En cuanto a la comparación con el gold standard, todas las placas presentaron distorsión. PALABRAS CLAVES: telerradiografía lateral, distorsión, telerradiografía convencional, telerradiografía digital / Tesis

published_or_final_version / Physiology / Doctoral / Doctor of Philosophy

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鄧國騫. / "2008年8月". / "2008 nian 8 yue". / Thesis (M.Phil.)--Chinese University of Hong Kong, 2008. / Includes bibliographical references (leaves 26). / Abstracts in Chinese and English. / Deng Guoqian. / Chapter 第一章： --- 我所認知的世界- --- p.5-10 / Chapter 第二章： --- 這場遊戲叫做拼貼 --- p.11-18 / Chapter 第三章： --- 這應該，是對「拼貼符號」更細緻的一番看法 --- p.19-23 / 後記 --- p.24 / 圖片來源 --- p.25 / 參考書目及資料 --- p.26 / 附錄：硏究院時期作品〔摘錄〕及其簡述 --- p.27-31

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Thesis--M. Phil., University of Hong Kong, 1980.

Thesis--Ph. D., University of Hong Kong, 1979.

No description available.