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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.
31

Study of fibre-optic interferometric 3-D sensors and frequency-modulated laser diode interferometry

Wu, Fang January 2000 (has links)
No description available.
32

The growth of fringe benefit provision : causes and consequences for social inequality and social interaction

Bevan, Philippa January 1978 (has links)
It is hypothesised that benefits have had little effect on freedom of choice, done little to increase social order and integration in the firm, but have undermined redistributional measures taken by Governments, and influenced the principles on which social policy is based.
33

Exegesis and screenplay for a film entitled Mangrove

Melville, Andrew Unknown Date (has links)
The film script Mangrove is both an eco-warrior thriller with science fiction elements and a documentation of the quirky, multicultural milieu of 21st century Auckland. It deals with the issues surrounding experimentation with genetic engineering and human alienation and disability.The script references the tradition of New Zealand film and its development as a "cinema of unease" through the character of Nat, who lives as a "man alone" on a moored yacht, and through its setting in a desolate mangrove estuary adjacent to a suburban industrial estate. It features characters who are recent immigrants from varying cultures and offers insights to world views that contrast with the pessimistic colonial outlook on life that pits man against the environment in a struggle for domination.The title, Mangrove, is a metaphor for the rich human environment that can be found in outposts of society that are often maligned and overlooked for their perceived lack of value.Mangrove's main character, Talia, is a disabled woman whose desire is to be accepted for her difference, her insights and her humanity. She is confronted with her past and her origins that may be part of a late 20th century genetic experiment.She meets Nat, a former journalist hiding out from society who is searching for a way to express his idealism. Likewise, Shiva, an indo-Fijian living in a nearby car wreckers yard has a love of music and the environment and shares Nat's idealism and desire to work for a better world. The three uncover a potentially world-altering genetic experiment with sugar. The antagonist multinational has Russian mafia allies that have to be dealt with, while the protagonists have the assistance of some Thai monks and Pacific Island street kids as they strive to expose the experimentation, and work out their relationships with one another.
34

Form and structure of the rural-urban fringe as a diagnostic tool of postmodern urban development in Canada

Starchenko, Oksana M. 28 April 2005
This research presents an attempt to geolocate postmodern urban development within Canadian urban space using changes in the form and structure of the rural-urban fringe areas as a diagnostic tool. The main argument presented herein is that conceptualizations of postmodern urban form and structure, and particularly their treatment in the urban geographic literature, mask the high level of diversity occurring across the Canadian urban hierarchy. A two-stage methodology linking the models describing postmodern urban form and structure found in the North American geographic literature with the theoretical contributions dealing with factors and forces of urban development is employed. First, investigation of the current patterns of differentiation of the urban social space in Canadian metropolitan areas is conducted. This stage of the analysis is informed by a structural approach to urban geography and carried out by means of factorial ecology. A typology of Canadian rural-urban fringe CSDs is developed using data from 1991 and 1996 censuses of population. Second, two indicators of functional relationships existing between urban fringe and urban core areas the geographic extent of personal networks of individuals and the activity spaces of households are investigated in the exemplar rural-urban fringe CSDs. This stage of the analysis is informed by propositions of structuration theory, although it remained compositional with regards to the main focus of analysis. The results of this research suggest that models of postmodern urban form and structure, which have developed in the context of the recent socio-economic restructuring taking place in the United States, do not adequately describe the situation in Canada. While the current context of urban development in Canada shows certain similarities to that in the United States, it also exhibits some unique features that have important implications for the urban development. Variation in urban form and structure in Canada appears to follow two axes the regional location of metropolitan areas and their positions within the national urban hierarchy. Although Canada exhibits a strong spatial differentiation into heartland and hinterland regions, no shift in focus of the socio-economic space comparable to that of the American Frostbelt-Sunbelt dichotomy is observed here. The majority of rural-urban fringe areas that have elements of postmodern form and structure were found at the top of the urban hierarchy and in the region that has historically been the economic and political core of Canada. Urban areas positioned in the middle of the urban hierarchy appear to have a monocentric structure with a significant degree of centrality.
35

A Device for Measuring Groundwater Velocity in the Capillary Fringe

Berg, Steven James 09 May 2007 (has links)
Groundwater flow in the capillary fringe is rarely measured during hydrogeological studies because of the difficulties associated with investigating this region. Previous research using a point velocity probe (PVP) to investigate groundwater velocity below the water table suggested that the PVP may also be capable of measuring groundwater velocity within the capillary fringe. The earlier PVP was redesigned for this study to allow for groundwater velocity data to be collected remotely. Using this system, groundwater velocity in the capillary fringe was investigated under field and laboratory conditions. Field experiments to investigate horizontal flow in the capillary fringe were conducted either by collecting vertical velocity profiles across the water table, or by holding the probe stationary and allowing seasonal recharge to move the capillary fringe and water table past the probe. Laboratory experiments were conducted in a controlled flow tank that simulated regions of an aquifer up to 85 cm above the water table. The redesigned PVP performed well as a remote system and provided velocity measurements up to 12 cm above the water table under field conditions. These values were consistent with those measured below the water table. In the laboratory, under conditions of drainage, groundwater velocity measurements in the capillary fringe consistent with values below the water table were measured up to 44 cm above the water table. The ability to measure horizontal flow of groundwater in the capillary fringe may open up new avenues for research in the study of contaminant transport in phreatic aquifers.
36

A Device for Measuring Groundwater Velocity in the Capillary Fringe

Berg, Steven James 09 May 2007 (has links)
Groundwater flow in the capillary fringe is rarely measured during hydrogeological studies because of the difficulties associated with investigating this region. Previous research using a point velocity probe (PVP) to investigate groundwater velocity below the water table suggested that the PVP may also be capable of measuring groundwater velocity within the capillary fringe. The earlier PVP was redesigned for this study to allow for groundwater velocity data to be collected remotely. Using this system, groundwater velocity in the capillary fringe was investigated under field and laboratory conditions. Field experiments to investigate horizontal flow in the capillary fringe were conducted either by collecting vertical velocity profiles across the water table, or by holding the probe stationary and allowing seasonal recharge to move the capillary fringe and water table past the probe. Laboratory experiments were conducted in a controlled flow tank that simulated regions of an aquifer up to 85 cm above the water table. The redesigned PVP performed well as a remote system and provided velocity measurements up to 12 cm above the water table under field conditions. These values were consistent with those measured below the water table. In the laboratory, under conditions of drainage, groundwater velocity measurements in the capillary fringe consistent with values below the water table were measured up to 44 cm above the water table. The ability to measure horizontal flow of groundwater in the capillary fringe may open up new avenues for research in the study of contaminant transport in phreatic aquifers.
37

Form and structure of the rural-urban fringe as a diagnostic tool of postmodern urban development in Canada

Starchenko, Oksana M. 28 April 2005 (has links)
This research presents an attempt to geolocate postmodern urban development within Canadian urban space using changes in the form and structure of the rural-urban fringe areas as a diagnostic tool. The main argument presented herein is that conceptualizations of postmodern urban form and structure, and particularly their treatment in the urban geographic literature, mask the high level of diversity occurring across the Canadian urban hierarchy. A two-stage methodology linking the models describing postmodern urban form and structure found in the North American geographic literature with the theoretical contributions dealing with factors and forces of urban development is employed. First, investigation of the current patterns of differentiation of the urban social space in Canadian metropolitan areas is conducted. This stage of the analysis is informed by a structural approach to urban geography and carried out by means of factorial ecology. A typology of Canadian rural-urban fringe CSDs is developed using data from 1991 and 1996 censuses of population. Second, two indicators of functional relationships existing between urban fringe and urban core areas the geographic extent of personal networks of individuals and the activity spaces of households are investigated in the exemplar rural-urban fringe CSDs. This stage of the analysis is informed by propositions of structuration theory, although it remained compositional with regards to the main focus of analysis. The results of this research suggest that models of postmodern urban form and structure, which have developed in the context of the recent socio-economic restructuring taking place in the United States, do not adequately describe the situation in Canada. While the current context of urban development in Canada shows certain similarities to that in the United States, it also exhibits some unique features that have important implications for the urban development. Variation in urban form and structure in Canada appears to follow two axes the regional location of metropolitan areas and their positions within the national urban hierarchy. Although Canada exhibits a strong spatial differentiation into heartland and hinterland regions, no shift in focus of the socio-economic space comparable to that of the American Frostbelt-Sunbelt dichotomy is observed here. The majority of rural-urban fringe areas that have elements of postmodern form and structure were found at the top of the urban hierarchy and in the region that has historically been the economic and political core of Canada. Urban areas positioned in the middle of the urban hierarchy appear to have a monocentric structure with a significant degree of centrality.
38

Application of two frequency fringe pattern for phase-shifting projected fringe profilometry

Chen, Hong-Ming 08 July 2005 (has links)
A novel accurate calibration-based phase-shifting projected fringe profilometry (Calibration-based PSPFP) for finding the absolute shape of objects is proposed. In addition to a tremendous savings in time, the benefits of using Calibration-based PSPFP also include greatly reduced environmental vulnerability. Since Calibration-based PSPFP employs a sinusoidal fringe pattern to perform the phase-shifting algorithm, the quality and accuracy of the sinusoidal fringe pattern becomes critical. To evaluate the performance of this measurement scheme and reduce the phase error caused by projected fringes, fabrication of various digital sinusoidal fringe patterns is necessary. Thus, we propose a method to fabricate various digital patterns. Application of a 2-D fringe pattern for Calibration-based PSPFP is proposed as well.
39

The Study of the Temperature Ramp-up Rate on the Warpage of IC Packages in the IR-reflow Process

Chang, Chih-Fang 06 September 2000 (has links)
The main aim of this study is to extending the holographic interferometry technique to measure the effect of the temperature ramp-up rate on the warpage of IC packages in the IR-reflow process . It is noted that both the warpage and the ambient temperature change can cause image fringes. Therefore, an auxiliary sphere is used to identify the fringe numbers caused by the ambient temperature change during the experiment. Then, the Taguchi method will be deduced to study the effect of the temperature ramp-up rate and peak waiting temperature on the warpage of PBGA package in the IR-reflow process.
40

3D SHAPE RECONSTRUCTION USING PROJECTED FRINGE PROFILOMETRY FOR AN IMAGE BLURRED BY LINEAR MOTION

Liu, Qiao-Yuan 11 August 2008 (has links)
A projected fringe profilometry (PFP) is an optical measurements technology which is widely used at present in gauging the object's three dimensional appearance. PFP is frequently used in detecting the quality of products in the industry due to the specialty of non-contact type, the short retrieve time and low environmental effect. As a result of the development for many years, PFP treats in the gauging static state of the object's three dimensional appearance has had the extremely fine gauging efficiency and the precision in , however in the dynamic inspected object in the gauging , not yet was still mature. If could to develop a set of gauging way in the dynamic inspected object , the application would be more widespread. Taking PFP as the gauging principle, analyzing the changes between the dynamic treat measured object and the fringe. Using the simple mathematics to describe the interaction relations between the fringe and the inspected the object. Finally, reconstructed the inspected object' three dimensional appearance. May know biggest superiority by the experimental process, in the situation of without losing the information of fringe, PFP can reconstruct the inspected object' three dimensional appearance and do not need the motion condition information.

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