DÂY LƯNG & VÍ DA CHẤT LƯỢNG CAO THƯƠNG HIỆU H2


SPATIAL ANALYSIS...

 SPATIAL ANALYSIS IN A GIS ENVIRONMENT
Researchers have explored a variety of approaches for extending the spatial analytic capabilities of GIS. These approaches can be broadly characterized as tight, close, and loose coupling strategies; each of these approaches has its advantages and disadvantages. This research investigates the possibilities for extending the spatial analytic capabilities of ArcView 3.0, a GIS software product, through tight, close, and loosely coupled integration strategies. As a context for this investigation, the paper examines employment patterns in the Greater Los Angeles Region. By demonstrating tools and techniques for analyzing, displaying, and visualizing spatial employment data, this study supports the UCGIS call for research dealing with spatial analysis in a GIS environment. We begin by focusing on a tight coupling implementation of the Gi* statistic to examine employment intensity in the Greater Los Angeles Region for both 1980 and 1990...

CARTOGRAPHY IN A GIS ENVIRONMENT

Rock and stone drawings that ancient man made, were the beginning of the discipline of cartography. At first cartography developed gradually over the centuries. Influenced by scientific and technological developments, it grew rapidly from the eras of explorations and scientific inventions to reach a high level of perfection in the 20th century. Practice and research have continued to improve the products (maps) from the discipline. It became an autonomous mapping discipline by its own right. In the same way a written language is governed by certain rules, so too cartography is guided by cartographic rules (grammar), which are intended to achieve effective graphic communication. So whoever wanted maps he/she consulted experts, namely cartographers, who were versed with such rules and principles, much in the same way a sick person consults a physician. The development of Geographical Information Systems (GIS) technology has relegated the autonomy that cartography had enjoyed for a number of centuries hitherto...

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