نتایج جستجو برای: evi
تعداد نتایج: 1275 فیلتر نتایج به سال:
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Vegetation indices (VIs) are widely used in long-term measurement studies of vegetation changes, including seasonal vegetation activity and interannual vegetation-climate interactions. There is much interest in developing cross-sensor/multi-mission vegetation products that can be extended to future sensors while maintaining continuity with present and past sensors. In this study we investigated...
Geo-parcel based crop identification plays an important role in precision agriculture. It meets the needs of refined farmland management. This study presents an improved identification procedure for geo-parcel based crop identification by combining fine-resolution images and multi-source medium-resolution images. GF-2 images with fine spatial resolution of 0.8 m provided agricultural farming pl...
Aberrant regulation of the Wnt/β-catenin pathway has an important role during the onset and progression of colorectal cancer, with over 90% of cases of sporadic colon cancer featuring mutations in APC or β-catenin. However, it has remained a point of controversy whether these mutations are sufficient to activate the pathway or require additional upstream signals. Here we show that colorectal tu...
یکی از ابزارهای موثر در زمینه مطالعات محیط زیست و علوم زمین، استفاده از فناوری دور سنجی و بهره گیری از داده های ماهواره ای است. سنجش از دور کاربردهای متنوع و فراوانی دارد که از جمله آنها مطالعه ی پوشش گیاهی است. در سه دهه گذشته نمایه های گیاهی کاربردهای وسیعی در بررسی منابع طبیعی و پایش پوشش گیاهی در مقیاس کوچک تا مقیاس منطقه ای و جهانی پیدا کرده اند. هدف از این تحقیق بررسی به دست آمده nmdi و ش...
We propose universal randomized function approximation-based empirical value iteration (EVI) algorithms for Markov decision processes. The ‘empirical’ nature comes from each iteration being done empirically from samples available from simulations of the next state. This makes the Bellman operator a random operator. A parametric and a non-parametric method for function approximation using a para...
Bu makale, geleneksel Aleviliğin yapı taşlarından biri olan Dedelik kurumunun kentleşmeye bağlı dönüşümünü, Hacılı Pir Sultan Ocağı örneği üzerinden ele almaktadır. Köylerde yaşayan geniş halk kitlelerinin, sosyo-ekonomik nedenlerle kent merkezlerine göç etmesi, Alevilik kurumlarının işlevini de etkilemiştir. Kırdan kente öncesinde, aktif bir şekilde Dede-Talip ilişkisini sürdüren Alevi toplulu...
Previous research on the effects of drought vegetation productivity seldom distinguished different responses ecosystems to under management practices and land use systems. Studies investigating whether irrigation can buffer negative impacts usually used discontinuous yield data in distribution. In this study, trends farmlands drylands northern China (DNC) from 2000 2018 were studied using self-...
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