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Ocean Science Journal - Assessing coral reef resilience is an increasingly important component of coral reef management. Existing coral reef resilience assessments are not practical, especially for... 相似文献
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Imam M. Xierali 《GeoJournal》2013,78(1):139-150
As healthcare systems around the world are facing increasing physician shortages, more physicians are migrating from low to high income countries. Differences in medical education and international interaction may have significant effect on physician flows. The Chinese Medical Graduates (CMGs) in the US present an interesting case to examine this effect. This paper evaluated the current number and historical trends of CMGs in the US from mainland China, Taiwan, and Hong Kong comparing their differences and similarities in terms of demographic and geographic characteristics. Since 2000, the number of CMGs in the US showed a consistent upward trend at a rate of approximately 206 additional graduates per year. In 2010, there were 8,797 CMGs in the US. Compared to CMGs from mainland China, CMGs from Taiwan and Hong Kong were much older. Much larger proportion of Taiwan and Hong Kong CMGs were male. However, they were more likely to practice in solo settings than mainland CMGs. The vast majority of CMGs are concentrated in urban areas and no significant differences were found for their distributions in underserved areas. However, a larger proportion of Taiwan and Hong Kong CMGs were in western coastal states; whereas a larger proportion of mainland CMGs were located in eastern coastal states. Fluctuations in CMG numbers in the US reflect the significant differences within the medical education systems among the three. The seemingly homogenous CMGs in the US do show significant differences. Given the magnitude and historical trends of migration of CMGs to the US, further exploration of its causes and impact is needed. 相似文献
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Md. Hasan Imam Delwar Hossain A. S. M. Woobaid Ullah 《Journal of the Geological Society of India》2013,82(3):290-294
This study has been conducted to find out the aquifer characteristics of Bagerhat Sadar and adjacent areas in Bangladesh using geoelectrical resistivity method and borehole logs. The interpretation of resistivity soundings (14 nos.) shows that the sub-surface lithological sequence can be divided into four geoelectric units. The deepest geoelectric unit (with resistivity from 8 Ohm-m to 18 Ohm-m) represents the deep aquifer with usually fresh water. Resistivity values of 12 ?m or more for this unit may indicate formation water as acceptable for coastal people. In the study area, the shallow aquifer inferred is not suitable for groundwater development. 相似文献
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A reliable prediction of hydrologic models, among other things, requires a set of plausible parameters that correspond with physiographic properties of the basin. This study proposes a parameter estimation approach, which is based on extracting, through hydrograph diagnoses, information in the form of indices that carry intrinsic properties of a basin. This concept is demonstrated by introducing two indices that describe the shape of a streamflow hydrograph in an integrated manner. Nineteen mid‐size (223–4790 km2) perennial headwater basins with a long record of streamflow data were selected to evaluate the ability of these indices to capture basin response characteristics. An examination of the utility of the proposed indices in parameter estimation is conducted for a five‐parameter hydrologic model using data from the Leaf River, located in Fort Collins, Mississippi. It is shown that constraining the parameter estimation by selecting only those parameters that result in model output which maintains the indices as found in the historical data can improve the reliability of model predictions. These improvements were manifested in (a) improvement of the prediction of low and high flow, (b) improvement of the overall total biases, and (c) maintenance of the hydrograph's shape for both long‐term and short‐term predictions. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献
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Flow and damage in pumped storm water systems are simulated, taking into consideration surcharged flow, basement and street storage. The simulation model is used in a design model to obtain practical global optimum values for the sewer depth, slope and diameter as well as sump and pump sizes. 相似文献