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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
161

Three-dimensional fluvial-deltaic sequence stratigraphy Pliocene-Recent Muda Formation, Belida Field, West Natuna Basin, Indonesia

Darmadi, Yan 25 April 2007 (has links)
The Pliocene-Recent Muda formation is essentially undeformed in the West Natuna Basin, and excellent resolution of this interval on three-dimensional seismic data in Belida Field allows detailed interpretation of component fluvial-deltaic systems. Detailed interpretation of seismic time slice and seismic sections along with seismic facies analysis, horizon mapping, and extraction of seismic attributes provide the basis to construct a sequence stratigraphic framework and determine patterns for sediment dispersal and accumulation. The Muda interval contains five third-order sequences, with depositional environments confined to the shelf and consisting mainly of fluvial elements. Sequence boundaries (SB) apparently result from major sea level falls, since there was no tectonic uplift and the field underwent only regional slow subsidence during sedimentation of the study interval. Sea level fluctuation also caused changes in fluvial patterns. Analysis of changing channel patterns indicates that major systems tracts relate to specific channel patterns. The Lowstand Systems Tract (LST) is generally dominated by larger channel dimensions and low sinuosity channel patterns. The Transgressive Systems Tract (TST) typically contains relatively smaller channels with high sinuosity. Channels in the Highstand Systems Tract (HST) generally show moderate sinuosity channels and are intermediate in size, larger than TST channels but smaller than LST channels. Crossplots of stratigraphic position and channel morphology indicate that within the transition from LST-TST, channel dimensions (width and thickness) generally decrease and channel sinuosity generally increases. High sinuosity, meandering and anastomosing channels are generally found near the maximum flooding surface. Low sinuosity channels occur within the HST-SB-LST succession, with the exception of higher sinuosity meandering channels evolving inside valleys. Larger, lower sinuosity channels result from high gradient and high discharge associated with stream piracy. Smaller, high-sinuosity channels result from low gradient and small discharge. Extraction of seismic attributes such as RMS Amplitude and Average Reflection Strength show these depositional features in greater detail. In the Belida Field area, lowstand channels were found to comprise the greatest volume of sandstone bodies. Seismic delineation of the distribution and morphology of these channel systems provides critical input for reservoir modeling and volumetric analysis.
162

Stability Analysis of Three-Wheel Stroller

Lee, Chia-yun 31 July 2008 (has links)
¡@¡@This study provides static and dynamic analysis of three-wheel stroller which is marketed. The model of stroller is built by computer- aided design software SolidWorks for perform static analysis on finite element analysis software ANSYS and mechanism¡¦s dynamic analysis on directed computer-aided mechanism analysis software COSMOSMotion. ¡@¡@It is important of stroller safety because it carry tender babies. The stroller should be examined carefully with three-wheel stroller always used on outdoor. CNS 6263 provides the standard for the safety test on the structure of the stroller, which includes a static analysis. In order to offer absolute safety for stroller, CNS uses a high standard to test the sample. For the market permission, the stroller needs to pass the CNS test, company always let stroller too strong to pass the test, and that will let the volume and weight too large to burden with cost. In this thesis, the researcher discussed the different on stroller between the traditional design and the CNS standard design. He also made an assumption the check if the stroller is overdesign. ¡@¡@A three-wheel stroller is a jogging stroller, and it is usually used on high velocity. Manufacturer should consider its steady, especially when the mass center of three-wheel stroller is usually too high. Dynamic analysis in this study will discuss the effect on the stroller when the forces of user are applied on the stroller. By the rollover formula of the three-wheel car, this study modified the program for three-wheel stroller in order to consider the influence of the force on the stroller. Comparing the results between the simulation of software and the calculation of the rollover function of three-wheel stroller, this study provides models for designers to prevent the rollover from the stroller.
163

Numerical study for a micro-PEMFC

Lin, Kuan-Wen 21 August 2008 (has links)
A three dimensional numerical model for a micro proton exchange membrane fuel cell was developed to simulate the concentration distribution of the fuel gas, and analyze the flow field and current field in the fuel cell. Finite control volume scheme with SIMPLEC algorithm was employed in the numerical method. Various operating conditions on the performance of the fuel cell were studied. It was shown that the concentration of oxygen at the cathode can strongly influence the cell performance. Increase the operating temperature and the pressure of the inlet gas can improve the performance of the fuel cell.
164

The Impact of ¡§Mini-Three-Links¡¨ Policy on Kinmen Economic Development: An Empirical Study

Wang, Hsiang-wei 10 September 2008 (has links)
Since the trial implementation of the ¡§Mini-Three-Links¡¨ policy in Kinmen on January 1, 2001, the government has in the past seven years adjusted relevant policies after step-by-step reviews based on the principle of promoting related matters in a sequential and orderly manner. The scale of the ¡§Mini-Three-Links¡¨ has expanded day by day, which has not only provided convenience to the lives of the people in Kinmen, but also provided convenient channels to the Taiwanese people traveling to and from the Mainland China. As of July 2008, the total number of people traveling across the Strait via the ¡§Mini-Three-Links¡¨ route has reached 1.586 million (both gross exit and gross entry) and the number of sailings via this route has reached 23,353.
165

Spacecraft pose estimation via a cascading genetic algorithm /

Obsniuk, Mark. January 2006 (has links)
Thesis (M.Sc.)--York University, 2006. Graduate Programme in Computer Science. / Typescript. Includes bibliographical references (leaves 157-162). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR29596
166

Improvement of the camera calibration through the use of machine learning techniques

Nichols, Scott A., January 2001 (has links) (PDF)
Thesis (M.S.)--University of Florida, 2001. / Title from first page of PDF file. Document formatted into pages; contains vii, 45 p.; also contains graphics. Vita. Includes bibliographical references (p. 43-44).
167

[Pi]-line reconstruction formulas in computed tomography /

Hass, Ryan Andrew. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2010. / Printout. Includes bibliographical references (leaves 115-117). Also available on the World Wide Web.
168

Visualizing solutions of the circular restricted three-body problem

Trim, Nkosi Nathan. January 2009 (has links)
Thesis (M.S.)--Rutgers University, 2009. / "Graduate Program in Mathematical Sciences." Includes bibliographical references (p. 40).
169

A freeform modeling system based on convolution surfaces from sketched silhouette curves /

Fong, Chun Kin. January 2002 (has links)
Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2002. / Includes bibliographical references (leaves 63-68). Also available in electronic version. Access restricted to campus users.
170

Comparing 2D and 3D direct manipulation interfaces /

Teather, Robert J. January 2008 (has links)
Thesis (M.Sc.)--York University, 2008. Graduate Programme in Computer Science. / Typescript. Includes bibliographical references (leaves 95-101). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR38834

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