The need to geo-spatial data in different applications particularly for knowledge-based sustainable development is considerable. However, various problems encountered with production, dissemination and accessing geo-spatial data makes users to face with many difficulties when intending to use them. Spatial Data Infrastructure (SDI) is introduced as a solution to these problems. Success of an SD...

U.S. global defense strategy is at a critical juncture. After seven years of confl ict and with a change of president imminent, new options should and surely will be considered. Th is calls for reasoned analysis of alternatives before a new national defense strategy is set. Policymakers are well aware of this imperative because of recent history in which the United States grossly underestimated...

BACKGROUND It is known that bone mineral density (BMD) predicts the fracture's risk only partially and the severity and number of vertebral fractures are predictive of subsequent osteoporotic fractures (OF). Spinal deformity index (SDI) integrates the severity and number of morphometric vertebral fractures. Nowadays, there is interest in developing algorithms that use traditional statistics for...

The Scalable-Delay-Insensitive (SDI) model is proposed for high-performance asynchronous system design. In this paper, we focus on checking whether a circuit under SDI model satisfies some untimed properties, and formally show that checking these properties in the SDI model can be reduced to checking the same properties in the bounded delay model. This result suggests that the existing verifica...

Many countries throughout the world believe they can benefit both economically and environmentally from better management of their spatial data assets, enabling them to access and retrieve complete and consistent datasets in an easy and secure way. This has resulted in the development of the Spatial Data Infrastructure (SDI) concept at various political and/or administrative levels. The SDI con...

Stimulant-dependent individuals (SDI) have abnormal brain metabolism and structural changes involving dopaminergic target areas important for the processing of time. These individuals are also more impulsive and impaired in working memory and attention. The current study tested whether SDI show altered temporal processing in relation to impulsivity or impaired prefrontal cortex functioning. We ...

The paper argues that SDI can best be understood in terms of praxis more than as technological artefact. Because of the many different and often conflicting views of reality, interests and other values between the many heterogeneous actors that are involved, SDI development causes inevitably paradoxes and dilemmas. The paper assumes that SDI is context specific but also has the generic properti...

Spatial Data Infrastructure (SDI) is a concept that aids in discovering, sharing, and using geospatial data. Nevertheless, given the breadth of this concept, several ways of developing SDI have emerged. The International Cartographic Association (ICA) has proposed a formal model to describe SDIs irrespective of technologies and implementations by using three of the five viewpoints of the RMODP ...