نتایج جستجو برای: geographic information system gis

تعداد نتایج: 3100428  

Journal: :JIPS 2010
Eun-Ha Song Young-Sik Jeong

GIS can only be applied to certain areas by storing format. It is subordinate to a system when displaying geographic information data. It is therefore inevitable for GIS to use GML that supports efficient usage of various geographic information data and interoperability for integration and sharing. The paper constructs VisualGML that translates currently-used geographic information such as DXF ...

2004
Myoung-Ah Kang François Pinet Michel Schneider Jean-Pierre Chanet Frédéric Vigier

This paper focuses on the description of a specific formalism for geographic database design and a complementary language for the expression of topological constraints. The proposed formalism enables designers to easily and clearly specify aspects related to geographic information. For that, our proposition uses concepts that are easy to understand for GIS (Geographic Information System) design...

Journal: :Jurnal Teknologi Informasi dan Ilmu Komputer 2023

Sistem Penataan Ruang (Sipetarung) Kota Malang adalah SI berbasis GIS pada sektor publik yang merupakan salah satu bentuk investasi pemerintah Malang. Investasi bidang TI bagi organisasi berguna sebagai sarana informasi dan komunikasi lebih efisien serta mempunyai peranan penting untuk dalam mencapai kesuksesan penerapan SI. Sayangnya masih sering ditemukan adanya IT Productivity Paradox. Untuk...

Journal: :journal of mining and environment 2014
hossein shahi abulghasem kamkar rouhani

the method of weights of evidence is one of the most important data driven methods for mineral potential mapping in gis. in this method, considering the characteristics of known mineralized locations, we can prospect new mineralized areas. in this research work, the method of weights of evidence has been used for hydrothermal gold potential mapping in torbat-e-heydarieh area, east of iran. as a...

Journal: :رستنیها 0
محمد محمودی محقق بخش گیاه شناسی، مؤسسه تحقیقات جنگل ها و مراتع کشور، تهران ([email protected]) علی اصغر معصومی استاد پژوهش بخش گیاه شناسی، مؤسسه تحقیقات جنگل ها و مراتع کشور، تهران عادل جلیلی استاد پژوهش بخش گیاه شناسی، مؤسسه تحقیقات جنگل ها و مراتع کشور، تهران

the geographic distribution of astragalus l. (fabaceae) was analyzed using a database of 12377 geo-referenced observations. in the old world (including asia, africa and europe) there are ca. 2900 euploid species classified in 166 distinct sections. in this study using geographic information system (gis) by means of diva-gis (ver. 4) distribution map of some more important sections in the old wo...

2002
Howard J. Schultz Allen R. Hanson Edward M. Riseman Frank Stolle

Our goal is to improve the way in which Geographic Information System (GIS) databases are created, updated and utilized. We are building software systems that will enable users to rapidly and inexpensively acquire, update, analyze and visualize high-resolution digital elevation maps (DEM), ortho-images, and other GIS products from digital images collected by a wide range of aerial and satellite...

Journal: :Expert Syst. Appl. 2003
Ioannis V. Filis M. Sabrakos Constantine P. Yialouris Alexander B. Sideridis B. Mahaman

In this paper an integrated geographic expert database system is presented which takes advantage of the relational database methodology combined with a geographic information system (GIS) and an expert system (ES). The GIS illustrates the data that are stored in the database after collaboration with the embedded ES. The system is fully implemented and applied to an interesting problem in apicul...

2012
Wang Qingshan

Nowadays, there are many attempts to establish object-oriented GIS in some software However, they are not accordant to object-oriented concept whole and systematically in the whole course from the process of cognizing and abstracting geographical space to the process of defining and describing GIS data model then to the process of analyzing and designing GIS. Especially, the research on common ...

1999
Nicholas R Chrisman

Many definitions of `GIS' have been proposed, but they are rarely discussed in the peer-reviewed literature. Most definitions in active use have serious limitations. Recent literature includes a variety of proposals to redefine GIS by changing the third word. This paper proposes an extended definition accompanied by a condensed form that contains the key concepts: `Geographic Information System...

2005
C. M. Gold

The concept of embedding a data structure within a space of the same or higher dimension allows us to see the common features between various approaches to multidimensional GIS. Examination of the requirements of those data structures indicates the need for local maintenance, based on clear geometric conditions. This in turn shows how the structures may be made dynamic and kinetic, leading to p...

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