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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.
1

A study of displacement ventilation systems for use in Hong Kong /

Lee, Chun-kwong. January 1998 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1998. / Includes bibliographical references (leaves 50-54).
2

Selected growth and interaction characteristics of seafloor faults in the central Mississippi Canyon Offshore Continental Shelf (OCS) area, northern Gulf of Mexico

Wegner, Scott Ashley 16 August 2006 (has links)
The characteristics of some shallow faults in the Gulf of Mexico interpreted to be active are poorly understood. A better understanding of these faults will increase our understanding of formerly and presently active geologic processes in the Gulf. Specifically, the characteristics of growth, interaction, and linkage of faults are of interest. Most of the Gulf has seen continuous clastic sediment deposition since the end of continental rifting in the middle Mesozoic. The Gulf is a tectonically quiescent basin, with the only major structural processes being salt diapirism and subsidence. Numerous styles of faulting have been observed in the Gulf, with each style being related to a specific type of deformation. Numerous authors have concluded that fault growth processes generally involve tipline propagation and linkage of faults. Evidence of these processes has been observed in seismic data sets. This investigation uses a HR 3-D seismic data set to characterize growth, interaction, and linkage of a fault set in the northern Gulf of Mexico. This work shows that linked and interacting faults are present in the study area. These conclusions were reached using measurements of throw on horizons offset by several faults and interpreting the throw data using a model of fault growth and interaction based on separate processes of growth by tipline propagation and growth by linkage of smaller faults. The ratio of these parameters for a fault population can be described by a power law relationship. For the fault set considered here, the power law was found to be valid.
3

Selected growth and interaction characteristics of seafloor faults in the central Mississippi Canyon Offshore Continental Shelf (OCS) area, northern Gulf of Mexico

Wegner, Scott Ashley 16 August 2006 (has links)
The characteristics of some shallow faults in the Gulf of Mexico interpreted to be active are poorly understood. A better understanding of these faults will increase our understanding of formerly and presently active geologic processes in the Gulf. Specifically, the characteristics of growth, interaction, and linkage of faults are of interest. Most of the Gulf has seen continuous clastic sediment deposition since the end of continental rifting in the middle Mesozoic. The Gulf is a tectonically quiescent basin, with the only major structural processes being salt diapirism and subsidence. Numerous styles of faulting have been observed in the Gulf, with each style being related to a specific type of deformation. Numerous authors have concluded that fault growth processes generally involve tipline propagation and linkage of faults. Evidence of these processes has been observed in seismic data sets. This investigation uses a HR 3-D seismic data set to characterize growth, interaction, and linkage of a fault set in the northern Gulf of Mexico. This work shows that linked and interacting faults are present in the study area. These conclusions were reached using measurements of throw on horizons offset by several faults and interpreting the throw data using a model of fault growth and interaction based on separate processes of growth by tipline propagation and growth by linkage of smaller faults. The ratio of these parameters for a fault population can be described by a power law relationship. For the fault set considered here, the power law was found to be valid.
4

The performance of displacement ventilation systems : experimental and theoretical studies /

Mundt, Elisabeth. January 1996 (has links)
Thesis (doctoral)--Kungl. Tekniska högskolan, 1996.
5

Temporal, Spatial, and Identity Displacement in the Short Stories of Julio Cortazar

Gonzalez, Gloria K. 05 1900 (has links)
The purpose of this study is to analyze the techniques through which Julio CortSzar presents and explores the literary concepts of temporal, spatial and identity displacement. The author's radical departure from the more traditionally structured view of these notions is certainly one of the most perplexing and controversial aspects of his literary style.
6

Mitral valve prolapse in Chinese

陳維智, Chen, Wai-chee, Walter. January 1982 (has links)
published_or_final_version / Medicine / Master / Doctor of Medicine
7

Stochastic computer simulations of viscous fingering

Rees, S. January 1987 (has links)
This thesis aims to develop a computer simulation of the process that occurs when one displaces a viscous fluid such as oil by a less viscous one such as water in a porous medium. Chapter 1 outlines the problem and explains why a computer simulation rather than analytical treatment is necessary for the problem. Previous computer simulations of the problem are reviewed and their respective advantages and disadvantages are considered. Chapter 2 introduces the concept of 'simulated annealing', a stochastic computational technique for solving minimisation problems with many variables and this technique is used to make a crude model of the displacement problem. The results from this are considered and the reasons for the model's failure to adequately solve the problem are discussed. In chapter 3, simulated annealing is applied to the simpler problem of the travelling salesman where one has to find the shortest route around a collection of points. The aim of this chapter is to try and find an optimum simulated annealing schedule to minimise the computer time needed to achieve a satisfactory solution. This is successfully accomplished for this particular problem by fitting the relaxation time of the system as a function of temperature to an Arrhenhius type law. But this optimisation is problem specific and it is concluded that the complicated nature of the oil displacement problem effectively precludes treatment by annealing. In chapter 4 a stochastic micro model is developed in which a pressure gradient across the system forces water into oil bearing pores. The pores have varying sizes which represent sizes which represent the varying permeability in a porous medium. A modified Gauss Seidel method is used to solve for the pressure field and an analytic expression for the saturation update is developed. The final chapter, chapter 5, develops the above model further and in particular develops a scheme whereby conservation of fluid is guaranteed. The profiles of the fingering of the water into the oil are studied and it is found that their interface fractal dimension varies monotonically with viscosity ratio.
8

Two phase flows in disordered systems

Olive, A. January 1984 (has links)
No description available.
9

Industrial policy in Ireland : developing appropriate evaluative frameworks

Lenihan, Helena January 2001 (has links)
No description available.
10

On the unsteady boundary layer and wake of a flat plate, and modelling water flow near a ship-side

Papadopoulos, Dimitrios January 2000 (has links)
No description available.

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