• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 1160
  • 217
  • 154
  • 143
  • 120
  • 112
  • 36
  • 36
  • 36
  • 36
  • 36
  • 36
  • 22
  • 21
  • 9
  • Tagged with
  • 2398
  • 361
  • 278
  • 238
  • 184
  • 175
  • 148
  • 148
  • 139
  • 130
  • 124
  • 119
  • 115
  • 111
  • 110
  • 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.
91

Exploration of Multiple ICE¡¦s for Embedded Microprocessor Cores in an SOC

Kao, Chung-Fu 21 August 2000 (has links)
SOC (System-On-Chip) designs are more and more popular, concurrently, more and more new challenges system integrators will meet. One out of these challenges is testing problem. Our research is focus on how to testing and debugging the microprocessor cores that embedded in an SOC. Not only test the microprocessor cores but also test the interconnecting wire among these embedded microprocessor cores. This thesis explores architectural alternatives in the integration of embedded in-circuit emulation (ICE) into an SOC chip with multiple micro-controller/processor cores. The alternatives include distributed, centralized and hierarchical styles. Advantages and disadvantages of these alternatives are analyzed.
92

The effect of ice crystal surface roughness on the retrieval of ice cloud microphysical and optical properties

Xie, Yu 17 September 2007 (has links)
The effect of the surface roughness of ice crystals is not routinely accounted for in current cloud retrieval algorithms that are based on pre-computed lookup libraries. In this study, we investigate the effect of ice crystal surface roughness on the retrieval of ice cloud effective particle size, optical thickness and cloud-top temperature. Three particle surface conditions, smooth, moderately rough and deeply rough, are considered in the visible and near-infrared channels (0.65 and 3.75 µm). The discrete ordinates radiative transfer (DISORT) model is used to compute the radiances for a set of optical thicknesses, particle effective sizes, viewing and illumination angles, and cloud temperatures. A parameterization of cloud bi-directional reflectances and effective emittances is then developed from a variety of particle surface conditions. This parameterization is applied in a 3-channel retrieval method for Moderate Resolution Imaging Spectroradiometer (MODIS) data at 0.65, 3.75, and 10.8 µm. Cloud optical properties are derived iteratively for each pixel that contains ice clouds. The impact of ice crystal surface roughness on the cloud parameter retrievals is examined by comparing the results for particles with smooth surfaces and rough surfaces. Retrieval results from two granules of MODIS data indicate that the retrieved cloud optical thickness is significantly reduced if the parameterization for roughened particles is used, as compared with the case of smooth particles. For the retrieval of cloud effective particle size, the inclusion of the effect of surface roughness tends to decrease the retrieved effective particle size if ice crystals are small. The reversed result is noticed for large ice crystals. It is also found that surface roughness has a very minor effect on the retrieval of cloud-top temperatures.
93

Anisotropy of ice Ih : development of fabric and effects of anisotropy on deformation /

Thorsteinsson, Throstur. January 2000 (has links)
Thesis (Ph. D.)--University of Washington, 2000. / Vita. Includes bibliographical references (p. 161-173).
94

Graph invariants a tool to analyze hydrogen bonding in ice and water clusters /

Kuo, Jer-Lai, January 2003 (has links)
Thesis (Ph. D)--Ohio State University, 2003. / Title from first page of PDF file. Document formatted into pages; contains xiv, 108 p.: ill. (some col.). Includes abstract and vita. Advisor: Sherwin J. Singer, Dept. of Chemistry. Includes bibliographical references (p. 100-108).
95

Effects of thermobaricity on coupled ice-mixed layer thermodynamics /

Roth, Mathias K. January 2003 (has links) (PDF)
Thesis (M.S. in Physical Oceanography)--Naval Postgraduate School, June 2003. / Thesis advisor(s): Roland W. Garwood, Arlene Guest. Includes bibliographical references (p. 59-61). Also available online.
96

An experimental study of ice accretion and wind loading on offshore supply boats

Hayhoe, Robert David January 1989 (has links)
No description available.
97

The impact of subglacial hydrology on force balance for a physically modeled ice stream

Wagman, Benjamin Moore 20 July 2012 (has links)
We use a physical model to investigate how changes in the distribution of subglacial hydrology affect ice motion of Antarctic ice streams. Ice streams are modeled using silicone polymer placed over a thin water layer to mimic ice flow dominated by basal sliding. Dynamic similarity between modeled and natural ice streams is achieved through direct comparison of the model force balance and the observed force balance of Whillans Ice Stream (WIS). The WIS force balance has evolved over time due to increased basal resistance. We test two hypotheses: 1) the subglacial water distribution influences the ice flow speed and thus the force balance and; 2) shear margins are locations where transitions in water layer thickness occur. The velocity and force balance are sensitive to pulsed water discharge events and changes in lubrication associated with sticky spots, and model shear margins tend to overlie water lubrication boundaries. Local changes in basal lubrication near margins (possibly as a result of the presence of sticky spots or subglacial lakes) influences the stability of the margin position and may be responsible for large and rapid shifts in margin location. / text
98

Energikartläggning och energieffektivisering av Trinnliden 7:5 : Simulering av energibesparande åtgärder i "IDA Indoor Climate and Energy"

Lindmark, Jonas January 2015 (has links)
On behalf of GATE Intelligent Support AB an energy audit has been conducted in the spring of 2015. The project was to develop an energy audit at an industrial premise in Vännäs municipality. Vännäs Fastigheter AB is the owner of this venue and has recently received complaints from tenants about an cold indoor climate in the property. Furthermore, it emerged that the property's future energy supply of heating is uncertain. Therefore a separate project to find an alternative heating sources solution has been initialized. This report will place great emphasis on changes, which lead to an improved indoor climate as to energy savings. To achieve this plan and to make it more understandable the simulation program IDA ICE has been used throughout the whole paper. Additionally, economic calculations for an LCC-analysis including repayment time has been done to compare the measures easier. Results from this project have demonstrated that this industrial premise can when all energy saving measures are carried out, reduce their energy consumption from 299 MWh per year to 129 MWh per year. This means a total decrease of 56.9%. The inspection of the property reveals shortcomings in the existing heating system. The current radiator system was configured wrong which resulted in a significant reduction of the heat outcome. This was not just done by changing settings of the radiator system but as well by adjusting the ventilationsystem to the business conditions of the property.
99

The growth and significance of white ice at Knob Lake, Quebec /

Jones, John Anthony Arthur January 1967 (has links)
No description available.
100

Heat exchange and sea ice growth in Arctic Canada.

Leahey, D. M. January 1966 (has links)
Stefan's equation for ice accretion has been modified to take into account the affects of snow depth and density. For regions in the Canadian Arctic the modified equation, when applied in the presence of a light snow cover with climatic estimates of heat loss, gave a satisfactory explanation of the observed ice growth (correlation coefficient = .99). [...]

Page generated in 0.0315 seconds