روش الکتریکی به عنوان یک بررسی ژئوفیزیکی می‌تواند پارامترهای زمین‌شناسی شامل خردشدگی، شاخص دگرسانی توده سنگ، درصد اشباع، کیفیت آب زیرزمینی و . را خوبی نمایش دهد. این پارامترها نقش مهمی در طبقه‌بندی مهندسی سنگ از طریق تأثیر بر دو (RQD) مقاومت (GSI)، کانه‌زایی عناصر نیز نحوه حفاری دارند. مقاله با استفاده سونداژ قائم لایه‌های زیرسطحی تعیین متعاقباً مذکور توده‌سنگ‌های آذرآواری آنومالی III کانسار نار...

In this study, to improve the efficiency of the original Palmer Drought Severity Index (PDSI_original), we coupled the Soil and Water Assessment tool (SWAT) and PDSI_original to construct a drought index called PDSI_SWAT. The constructed PDSI_SWAT is applied in the Wei River Basin (WRB) of China during 1960–2012. The comparison of the PDSI_SWAT with four other commonly used drought indices reve...

The purpose of this paper is to quantify climatic controls on the area burned by fire in different vegetation types in the western United States. We demonstrate that wildfire area burned (WFAB) in the American West was controlled by climate during the 20th century (1916-2003). Persistent ecosystem-specific correlations between climate and WFAB are grouped by vegetation type (ecoprovinces). Most...

Ecological theory asserts that the climate of a region exerts top-down controls on regional ecosystem patterns and processes, across space and time. To provide empirical evidence of climatic controls, it would be helpful to define climatic regions that minimized variance in key climate attributes, within climatic regions—define the periods and features of climatic regimes, and then look for con...

Historical records of precipitation, streamflow and drought indices all show increased aridity since 1950 over many land areas1,2. Analyses of model-simulated soil moisture3,4, drought indices1,5,6 and precipitation-minus-evaporation7 suggest increased risk of drought in the twenty-first century. There are, however, large differences in the observed and modelsimulated drying patterns1,2,6. Reco...

Droughts are related with prolonged periods when moisture is significantly below normal values. Drought indices attempt to scale the main drought features to facilitate comparisons. Numerous indices are found in the literature based on different drought features. Many of them were created for particular places and specific objectives, and therefore not suitable to generalize the results. Howeve...

23 We demonstrate that wildfire area burned (WFAB) in the American West was significantly 24 controlled by climate (combinations of precipitation, temperature, and/or drought) during most 25 of the 20 century (1916-2003). Persistent, ecosystem-specific correlations between climate 26 variables and area burned are grouped by vegetation type for 16 ecoprovinces across the West. 27 Most mountainou...

امروزه علاقه به اعمال سبک مربی گری در میان مدیران سازمانها حال رشد است. سازمان ها دنبال این روش مدیریتی هستند تا با استفاده از شایستگی های گری، نیروی انسانی خود را متعهد ساخته و بهبودعملکرد فردی سازمانی نائل آیند. وجود این، هیچ تحقیق یا ادبیاتی زمینه ندارد که کدامیک عوامل بیشترین بهبود عملکرد برای ویژه بانک بوجود می آورند. حاضر راستای پاسخگویی چالش، صورت جامع نظام مند تمامی شاخص هایی حوزه موثر ...