نتایج جستجو برای: gis envi

تعداد نتایج: 35458  

1999
Tai On Chan Ian P. Williamson

It is argued that a corporate GIS is the lowest level in a hierarchy of spatial data infrastructures (SDIs) worldwide. Therefore, SDI development can benefit from a good understanding of the nature and dynamics of development of a corporate GIS. To facilitate this cross-fertilisation, existing definitions of GIS are briefly reviewed in the context of the organisational setting of a corporate GI...

Journal: :Library Hi Tech 2010
Francis P. Donnelly

Purpose – The purpose of this paper is to provide an overview of free and open source (FOSS) geographic information system (GIS) software within the broader contexts of the open source software movement and developments in GIS, and pose the question of whether libraries and academic departments should consider adopting FOSS GIS. Design/methodology/approach – The process of creating a basic them...

2008
F. Farnood Ahmadi H. Ebadi

One of the important stages in the implementation of a GIS is referred to preparation of data to be entered to the system. To produce spatial data for entering to GIS using photogrammetric techniques, common and current method is to utilize photogrammetric and GIS systems individually (off-line procedure). Preparing spatial data on the basis of the mentioned method has a lot of problems, such a...

2000
Nancy J. Obermeyer

This paper makes the case that the time is right for certification and/or accreditation in GIS. The paper begins with a brief history of the debate, and details current trends in the field of GIS that are driving current initiatives in GIS certification and accreditation. The two major driving factors are major growth of the GIS profession, and initiatives coming from the Surveying community. I...

2004
Wei Hui Bai Yu

What this paper tends to address are followings. (1) A notable common characteristic of many GIS applications we ever might ignore is that the ability of analysis is not primarily provided by GIS itself, GIS generally plays roles of data management and virtual environment construction, and it is the users of GIS software that achieve that intelligencerequired process of problem solving. That is...

Journal: :Public health nursing 2004
Mary E Riner Cynthia Cunningham Ann Johnson

The use of geographic information system (GIS) technology allows public health practitioners to explore disparities in health, analyze disease outbreaks, and prioritize the use of limited resources for improving population health. Nursing students benefit from use of World Wide Web GIS resources as they develop knowledge and skill in assessing population health and planning interventions. This ...

2010
Raymond F. Kokaly

The identification of materials by measuring and analyzing their reflectance spectra has been an important method used in analytical chemistry for decades. Now, airborne and space-based imaging spectrometers give scientists the opportunity to detect materials and map their distributions across the landscape. With new satelliteborne sensor planned for the future, for example HYSPIRI (HYPerspectr...

2011
Yu Hsin Tsai Douglas A. Stow John Weeks

The goal of this study was to map and quantify the number of newly constructed buildings in Accra, Ghana between 2002 and 2010 based on high spatial resolution satellite image data. Two semi-automated feature detection approaches for detecting and mapping newly constructed buildings based on QuickBird very high spatial resolution satellite imagery were analyzed: (1) post-classification comparis...

2004
Dana J. Vanier

The three-year Municipal Infrastructure Investment Planning (MIIP) project is currently investigating investment planning and strategic asset management. The project proposes using geographic information systems (GIS) as the framework for decision support tools for municipal infrastructure managers, and more specifically, as tools to assist them to prioritize infrastructure maintenance and capi...

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