نتایج جستجو برای: 0004 bias error and hec
تعداد نتایج: 16861142 فیلتر نتایج به سال:
شبیه سازی فرآیند بارش - رواناب در حوضه های آبریز از نظر مدیریت منابع آب، مهندسی رودخانه، سازه های کنترل و ذخیره سیلاب و غیره از اهمیت ویژه ای برخوردار است. عکس العمل حوضه در برابر پدیده بارش به علت وجود عوامل هیدرولوژیکی گوناگون، بسیار پیچیده است. رواناب، به خصوصیات ژئومورفولوژیک حوضه از قبیل هندسه، پوشش گیاهی، نوع خاک و خصوصیات اقلیمی حوضه همچون بارش، دما و غیره بستگی دارد. تاثیر هر کدام از ای...
Cellulose based polymers have shown tremendous potential as drug delivery carrier for oral drug delivery system (DDS). Hydroxyethyl cellulose (HEC) and hydroxypropyl cellulose (HPC) are widely explored as excipients to improve the solubility of poorly water soluble drugs and to improve self-life of dosage form. This work is an attempt to modulate the physicochemical properties of these cellulos...
writing as a productive skill requires practice in the basic sub-skills of vocabulary and grammar. in fact, grammar has been viewed as the core of programs in writing classes to help the students put the elements of sentence together and combine sentences of specific lengths to come up with an error-free work of art. conceptualizing l2 writing in this way introduces writing as a product and enc...
Chitosan-beta glycerophosphate-hydroxyethyl cellulose (CH-GP-HEC) is a biocompatible and biodegradable scaffold exhibiting a sol-gel transition at 37°C. Chondrogenic factors or mesenchymal stem cells (MSCs) can be included in the CH-GP-HEC, and injected into the site of injury to fill the cartilage tissue defects with minimal invasion and pain. The possible impact of the injectable CH-GP-HEC on...
For decades, performance has driven the high-end computing (HEC) community. However, as highlighted in recent exascale studies that chart a path from petascale to exascale computing, power consumption is fast becoming the major design constraint in HEC. Consequently, the HEC community needs to address this issue in future petascale and exascale computing systems. Current scientific benchmarks, ...
This paper analyzes the statistic properties of the systematic error in terms of range and bearing during the transformation process. Furthermore, we rely on a weighted nonlinear least square method to calculate the biases based on the proposed models. The results show the high performance of the proposed approach for error modeling and bias estimation.
Department of Obstetrics & Gynaecology, University of British Columbia, Vancouver, Canada Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Purvis Hall, 1020 Avenue des Pins Ouest, Montreal QC, Canada H3A 1A2 Institute of Social and Preventive Medicine (IUMSP), University Hospital Centre and University of Lausanne, Lausanne, Switzerland Correspondence to: J ...
in order to compare the precision of predictions of nrc (2001) and cncps models, 17 holstein fresh cows were assigned in a randomized complete block design to a balanced diet with nrc (2001) and cncps software. the predicted dmi, energy allowable milk and protein allowable milk by both models were compared with observed values. the precision of the predictions of models was evaluated by calcula...
بخش وسیعی از کشور ما در قسمت خشک و نیمهخشک قرار دارد.. در این مناطق بارش معمولأ ناچیز و نامنظم است و تغییرات شدید مکانی و زمانی دارد که تأثیر زیادی بر چرخه هیدرولوژیکی و منابع آب دارد. شناخت هیدرولوژی مناطق خشک لازمه شناخت این محیطها و تشخیص آسیبپذیری آنها به تغییر است. مدیریت موثر منابع آب ضروری است که نیازمند سامانه پشتیبانی تصمیمگیری شامل ابزارهای مدلسازی است. انتخاب مدل، نیاز به تشخی...
Climate changes significantly cause the precipitation deficiency and in turn reduce inflow amount reservoir affecting hydroelectric power generation. The primary objective of this study was to evaluate hydropower generation operation under climate change from Kesem reservoir. Recent Representative Pathway (RCP) scenarios were used impact on Power transformation equation variance scaling approac...
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