نتایج جستجو برای: شاخص sdi
تعداد نتایج: 76020 فیلتر نتایج به سال:
BACKGROUND AND PURPOSE A noninvasive reliable technique that can reveal cerebral blood flow volume could be a valuable tool in screening programs for stroke prevention. In diagnostic ultrasonography, spectral Doppler imaging (SDI) is popular among sonologists and vascular technologists to estimate blood flow volume despite its documented inaccuracy and the availability of the more accurate tech...
Funding the reengineering and recapitalisation of Spatial Data Infrastructures (SDIs) will, in part, depend on the ability of SDI component coordinators to comprehend and report on the performance of their initiatives. This is important for both aspects, as for reengineering, the performance of an infrastructure can only be improved if it is measured. For recapitalization, attracting new invest...
BACKGROUND The systolic dyssynchrony index (SDI) has been introduced as a measure of mechanical dyssynchrony using three-dimensional echocardiography to select patients who may benefit from cardiac resynchronization therapy (CRT). However, three-dimensional echocardiography may be inadequate in a number of patients with suboptimal acoustic window and no single echocardiographic measure of dyssy...
خشکسالی یک رخداد طبیعی تکرارشونده و موقتی است و منجر به وارد آمدن خسارت های زیادی به زندگی انسان و اکوسیستم های طبیعی می شود. در این تحقیق، از شاخص بارش استاندارد شده (spi) و شاخص خشکسالی جریانات رودخانه ای (sdi) جهت ارزیابی خشکسالی ها استفاده شده است. برای این منظور از آمار ماهانه 72 ایستگاه باران سنجی و 42 ایستگاه هیدرومتری در استان تهران استفاده شد و شاخص های خشکسالی spi و sdi نیز در نرم افز...
The implementation of Spatial Data Infrastructures (SDIs) for governments and companies is a task that has gained ample attention in recent years. Different categories of spatial software such as desktop GIS, server GIS, web map servers, spatial database management systems, web map development toolkits, etc., are required to realize the software components of an SDI. We catalogue a (selected) v...
BACKGROUND Poverty is a major determinant of population health, but little is known about its role in modifying air pollution effects. OBJECTIVES We set out to examine whether people residing in socially deprived communities are at higher mortality risk from ambient air pollution. METHODS This study included 209 tertiary planning units (TPUs), the smallest units for town planning in the Spe...
Introduction The aim of this study was to understand the global incidence and disability-adjusted life years (DALY) oral disorders by age, gender, region, Sociodemographic Index (SDI) from 1990 2019. Material methods estimated annual percentage change (EAPC) 95% confidence intervals (CIs) were used assess trends in age-standardized DALY rates Results rate (EAPC = 0.01) increased slightly From 2...
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