نتایج جستجو برای: over the past few decades

تعداد نتایج: 16132890  

Journal: :Remote Sensing 2022

Soil erosion caused by water and wind is a complicated natural process that has been accelerated human activity. It results in increasing areas of land degradation, which further threaten the productive potential landscapes. Consistent continuous monitoring will help identify location, magnitude, trends soil erosion. This information can then be used to evaluate impact management practices info...

Journal: :Han-gukbangjaehakoenonmunjip 2022

Analyzing the effects of forest fires on sediment dynamics is essential to establish effective mitigation measures reduce risk fire-related disasters, such as landslides, debris flows, and hyperconcentrated flows. The objective this study was investigate temporal trend in landslide occurrences after a fire based statistical data landslides recorded over past two decades. results suggested that ...

Over the past two decades, PC speeds have increased from a few instructions per second to several million instructions per second. The tremendous speed of today's networks as well as the increasing need for high-performance systems has made researchers interested in parallel and distributed computing. The rapid growth of distributed systems has led to a variety of problems. Task allocation is a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده فنی 1393

asymmetric membranes are widely used in many industrial membrane separation processes. the major advantage of membrane filtration over the conventional process is its ability to remove a wider spectrum of particles without using any chemicals. hollow fiber configuration offer many advantages over flat-sheet or tubular membranes. the spinning process of hollow fiber may look simple, yet it is te...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1392

the extent to which written corrective feedback on linguistic errors can play a role in helping l2 writers improve the accuracy of their writing continues to be an issue of interest to researchers and teachers since truscott (1996) mounted a case for its abolition. while there is growing empirical evidence that written corrective feedback can successfully target some types of linguistic error (...

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