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181.
Ahmad Shlash Alawneh Osama K. Nusier Ahmed Abdul-Ezel Al-Mufty 《Geotechnical and Geological Engineering》2006,24(3):637-660
A reliability based method was used to design and analyse shallow foundations using first-order Taylor series approximation.
The computer program Mathcad was used to facilitate all mathematical and computional efforts. This method is an effective
tool to assist the foundation designers and analyists to investigate how reliable their designs or analyses are in relation
to the ultimate bearing capacity of the foundations. The approach presented in this paper provides a reliable alternative
for design and analysis of shallow foundations, rather than the conventional design methods, which employs the assumptions
of a specified saftey factor. Several examples were presented for design and analysis of strip footings embedded in sandy
soil, and rectangular and square footings analysis embedded in clayey soils. The program input and output of each example
are also presented and discussed. 相似文献
182.
183.
Ahmed S. El-Hames 《Arabian Journal of Geosciences》2012,5(6):1359-1366
The predicted relationship between water table rise and time behind a constructed underground dam is established in this paper based on a semi-physically based approach. This approach utilizes values of the most effective actual groundwater aquifer properties. Robustness of this approach was tested by applying it to a number of proposed underground dam sites in two real aquifers, in addition to a number of hypothetical cases. Results were compared with MODFLOW simulation outputs for these cases, and the comparison is found to be very encouraging. 相似文献
184.
Theoretical and Applied Climatology - Gridded precipitation products are becoming good alternative data sources for regions with limited weather gauging stations. In this study, four climate... 相似文献
185.
Alameer Zakaria Elaziz Mohamed Abd Ewees Ahmed A. Ye Haiwang Jianhua Zhang 《Natural Resources Research》2019,28(4):1385-1401
Natural Resources Research - An accurate forecasting model for the price volatility of minerals plays a vital role in future investments and decisions for mining projects and related companies. In... 相似文献
186.
Structural Controls on Groundwater Flow in Basement Terrains: Geophysical,Remote Sensing,and Field Investigations in Sinai 总被引:2,自引:0,他引:2
187.
ShahidNaseem ShamimAhmedSheikh ErumBashir KhaulaShirin 《中国地质大学学报(英文版)》2005,16(2):160-169
INTRODUCTION Theinteractionofcomplextectonicphasesinthe IndusbasinduringtheCretaceoushasimpartedascal lopedoutlineinthesedimentarysequences.Thedevel opmentofdiversifiedsedimentaryformationsduringthe Cretaceousensuresexcellentsources(SembarandGoru formations)andreservoirs(MoghalKotandPabfor mations)forhydrocarbons.Numerousplaysandpros pectsofhydrocarbonareassociatedwiththeCretaceous system,consequentlytheIndusbasinisattractiveto petroleumexplorationcompaniesinPakistan(Sheikh andNa… 相似文献
188.
189.
Numerical modeling of the Rideau Valley Watershed 总被引:1,自引:0,他引:1
Ferdous Ahmed 《Natural Hazards》2010,55(1):63-84
Using the Mike11 modeling system by the Danish Hydraulic Institute, a detailed model of the Rideau Valley Watershed was constructed.
It includes 532 km of rivers and lakes, 106 basins, 122 bridges and culverts, and 20 water control structures. The model was
calibrated using measured streamflow data for a time period of 5 years; additional 5 years of data was used for validation.
Various methods, both qualitative and quantitative, were used to evaluate the model performance. It was found that the model
can simulate the hydrological response with a reasonable to high degree of accuracy. This model is now being used for various
watershed management purposes, including flood forecasting, dam safety assessment, quantification of wetland functions, and
derivation of design flows. 相似文献
190.
Abstract Further ratification of the Kyoto Protocol by non-Annex 1 countries such as the State of Qatar will not affect the entrance into force of the Treaty; however, ratification remains an important decision due to other considerations, primarily the economic costs and benefits associated with ratification. As a member of the Organization of Petroleum Exporting Countries (OPEC), Qatar's economic position is closely allied with revenue generated from its oil and natural gas resources. Qatar expects adverse impacts from implementing the Kyoto Protocol, though the estimated magnitude varies enormously with different models. Also, the impacts depend significantly on how the implementation is done; for example, the kind of policies that other countries use. Qatar is able to counter adverse impacts by exploiting its greater share of natural gas and developing energy-intensive industries that produce nonenergy goods such as steel, petrochemicals, and chemicals. Furthermore, it is clear that clauses in the Protocol can be developed to protect OPEC interests, and if Qatar does not ratify the Protocol, it will be excluded from the subsequent rule-making processes. On balance, there are benefits to ratifying the Treaty, and there is also a strong need for extensive further research. 相似文献