نتایج جستجو برای: نمایه rdi
تعداد نتایج: 6545 فیلتر نتایج به سال:
In this study, drought characteristics of Arak, Bandar Anzali, Tabriz, Tehran, Rasht, Zahedan, Shiraz and Kerman stations during the statistical period of 1956 to 2015 were studied by Reconnaissance Drought Index (RDI) and Standardized Precipitation Index. Precipitation and temperature data were needed to calculate RDI. Precipitation data was also required to estimate SPI. In this study, Drinc ...
هدف این مقاله، انتخاب مناسبترین تابع توزیع احتمال برای محاسبه دو شاخص خشکسالی RDI و SPI و مقایسه این دو شاخص میباشد. بر این اساس، با استفاده از آمار هواشناسی سی ایستگاه همدید در ایران، سری دادههای سالانه بارندگی و نسبت بارش به تبخیر- تعرق پتانسیل بهدست آمد. ابتدا تابع توزیع نرمال یا گاما برای تعیین مقادیر سالانه شاخص SPI و تابع توزیع لاگنرمال یا گاما برای تعیین مقادیر سالانه شاخص RDI مورد ...
When Policy Topic is covered Uvulopalatopharyngoplasty (UPPP) may be considered medically necessary for the treatment of clinically significant obstructive sleep apnea syndrome (OSA) in appropriately selected adult patients who have not responded to or do not tolerate nasal continuous positive airway pressure (CPAP). Clinically significant OSA is defined as those patients who have: Apnea/hypo...
The growing number and effectiveness of earth observation satellite systems, along with the increasing reliability of remote sensing methodologies and techniques, present a wide range of new capabilities in monitoring and assessing droughts. In this paper, several drought features are analyzed and assessed by using remotely sensed Reconnaissance Drought Index (RDI). The developed methodology is...
From the point of view that pellet microstructure determines its metallurgical properties, an improved support vector machine (SVM) model for properties forecast is studied based on mineral phase characteristics, in order to improve evaluation efficiency properties. The composed a SVM with self-adaptive selection kernel parameters and compounding types. This not only guarantees super interpolat...
The aim of this study is investigation of climate change impact on Karoon3 basin in future periods. For this purpose, the simulated precipitation and potential evapotranspirationof four AOGCM models was used to simulate drought index. Monthly precipitation was calculated by inverse distance weighted method. Reclamation Drought Index (RDI) was used as watershed drought index. RDI was calculated ...
Abbreviations: AASM American Academy of Sleep Medicine; ACCP American College of Chest Physicians; AHI apnea-hypopnea index; AHRQ Agency for Healthcare Research and Quality; ATS American Thoracic Society; CPAP continuous positive airway pressure; EMG electromyogram; ERC Evidence Review Committee; LR likelihood ratio; RDI respiratory disturbance index; REM rapid eye movement; ROC receiver operat...
The continuous monitoring of water stress will increase the accuracy deficit irrigation scheduling. Almonds are very sensitive to conditions and an important consumer. Recently, a novel approach use trunk growth rate (TGR) data has been proposed for olive trees. These works suggested TGR frequencies evaluate status aim current work was compare seasonal pattern three different indicators derived...
The olive tree is an iconic in the Mediterranean region, traditionally cultivated under rainfed conditions; however, cultivars are also found outside region and widely used for oil production. However, with increasing aridity global changes, agroecosystems facing sustainability challenges. This study aims to evaluate effect of two deficit irrigation strategies on agronomic productive parameters...
During the iron ore sintering process, its SiO2 content considerably affects sinter quality. In this study, effect of on indexes was studied, with mineral composition and microstructure analyses. It shown that strength reducibility products improved when increased. The yield tumbler index increased from 69.57% 58.67% to 74.02% 62.32%, respectively, increasing 3.92% 5.12%. Moreover, reduction di...
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