نتایج جستجو برای: شاخص sdi
تعداد نتایج: 76020 فیلتر نتایج به سال:
The integration of marine and land based spatial information will support sustainable management and development of the coastal zone. Therefore, the development of a seamless platform covering the land and marine environments would facilitate more efficient and effective decision-making capabilities for any jurisdiction with land-marine interface. This paper discusses the potential for developi...
With the development of the Web 2.0 era, new technologies and applications have emerged to make it possible for individuals to produce and share geographic information on the Internet. This development is expanding at a high rate, and has received large response from users. Spatial data infrastructure is a framework of policies, institutional arrangements, technologies, data and people that mak...
The main objective of software inspections is to find faults in software artefacts. The benefits of inspections are reported from researchers as well as software organizations. In some studies, the fault detection in inspections has shown to be more efficient than other validation and verification activities. A problem, however, is that inspections sometimes are not as efficient and effective a...
Spatial Data Infrastructure (SDI) development is widely known to be a challenging process owing to its complex and dynamic nature. Although great effort has been made to conceptually explain the complexity and dynamics of SDIs, few studies thus far have actually modeled these complexities. In fact, better modeling of SDI complexities will lead to more reliable plans for its development. A state...
Today, more than ever, it is important to look beyond our national boundaries. The world as we know it is changing. Economies worldwide are undergoing a process of profound and continuing structural change, and the global village is becoming a reality driven by information and communication technologies. With this background, many countries throughout the world believe they can benefit both eco...
BACKGROUND Chronic exposure to drugs of addiction induces cellular adaptations in orbitofrontal cortex (OFC) and associated limbic-prefrontal pathways that might underlie abuse-related behavior. A propensity to make risky decisions in spite of substantial negative consequences might be mediated by medial OFC dysfunction in substance-dependent individuals (SDI). We tested the hypothesis that med...
BACKGROUND AND PURPOSE Frontolimbic circuits are involved in learning and decision-making processes thought to be affected in substance-dependent individuals. We investigated frontolimbic cortical morphometry in substance-dependent men and women and determined whether morphometric measurements correlated with decision-making performance. MATERIALS AND METHODS Twenty-eight abstinent SDI (17 me...
BACKGROUND Substance dependence is associated with impaired decision-making and altered fronto-striatal-limbic activity. Both greater and lesser brain activity have been reported in drug users compared to controls during decision-making. Inconsistent results might be explained by group differences in the temporal profile of the functional magnetic resonance imaging (fMRI) response. While most p...
Spatial Data Infrastructure (SDI) development is widely known to be a challenging process owing to its complex and dynamic nature. Although great effort has been made to conceptually explain the complexity and dynamics of SDIs, few studies thus far have actually modeled these complexities. In fact, better modeling of SDI complexities will lead to more reliable plans for its development. A state...
خشکسالی یک پدیده طبیعی و قابل تکرار است که باعث کمبود آب در بخش های مختلف مصرف می گردد. این پدیده در مقایسه با سایر پدیده ها هم از نظر شدت و فراوانی وقوع و هم از نظر وسعت فضایی و میزان خساراتی که به بار می آورد از اهمیت بیشتری برخوردار است. در این تحقیق از شاخص بارش استاندارد شده ( spi ) و شاخص خشکسالی جریانات رودخانه ای ( sdi ) جهت ارزیابی و تحلیل زمانی وقوع خشکسالی ها استفاده شده است. برای ای...
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