Marine spatial planning (MSP) has recently attracted more attention as an efficient decision support tool. MSP is a strategic and long-term process gathering multiple competing users of the ocean with objective to simplify decisions regarding sustainable use marine resources. One challenges in determine optimal zone locate new activity while taking into account locations other existing activiti...

After the outbreak of era, as a densely crowded residential buildings and space types where students stay for longest time, demand public function is larger than ever. At moment, old college student flats are inefficient backward in terms organization efficiency, they far from use apartments among current period. This paper analyzes status apartments, investigates needs discusses ways spatial e...

Abstract. In order to answer efficiently range queries in 2-d R-trees, first we sort queries by means of a space filling curve, then we group them together, and finally pass them for processing. Initially, we consider grouping of pairs of requests only, and give two algorithms with exponential and linear complexity. Then, we generalize the linear method, grouping more than two requests per grou...

Mobile devices like PDAs are capable of retrieving information from various types of services. In many cases, the user requests cannot directly be processed by the service providers, if their hosts have limited query capabilities or the query combines data from various sources, which do not collaborate with each other. In this paper, we present a framework for optimizing spatial join queries th...

In order to opportunistically exploit unused radio spectrum nodes of dynamic spectrum access (DSA) networks monitor the spectrum around them. Such cognitive radios can greatly benefit from a spatial characterization of spectrum use. However, there is need to find an efficient way to describe spatial use, something which has not been studied in details so far. In this paper, we introduce spatial...