نتایج جستجو برای: نرمافزار gis

تعداد نتایج: 35063  

1998
Z-R Peng

The popularity of Internet technology has brought about some fundamental changes in the field of GIS. Internet GIS is emerging as a new technology to access, process, and disseminate spatial information over the Internet. Internet GIS cover a much wider audience than the traditional GIS. This raises many issues that are distinct from traditional desktop GIS, such as easy access, webcompatible u...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده عمران 1391

نوار ساحلی دریای عمان و خلی فارس از نظر اقتصادی توریستی محیط زیستی شیلاتی و همچنین مسائل بینالمللی استراتویکی و نظامی دارای اهمیت فراوانی میباشد. از طرفی این سواحل با طول زیاد همواره در معرض اثرات منفی ناشی از پدیده فرسایش ساحلی قرار دارد به طوری که در برخی از نقاط سواحل جنوبی کشورمان میزان پسروی ساحل بسیار محسوس میباشد. بنابراین ارزیابی خطرپذیری مناطق ساحلی جنوب کشورمان به فرسایش ارائه روش...

2000
Nadine Schuurman

GIS eased into geography without much discord until the 1990s, when a flurry of commentaries about the relative merits of GIS made their way into a number of geographic journals. The ensuing decade was marked by varying degrees of friction between GIS practitioners and their critics in human geography. Despite the methodological chasm between the two groups, little discussion of the implication...

Journal: :International Journal of Geographical Information Science 2011
Daniel Caldeweyher

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ژورنال: :مهندسی عمران مدرس 0
حسین محمودی دوم نیاسر محمد فاروق حسینی مرتضی احمدی اسماعیل جلالی

چکیده - سد گتوند از نوع سنگریزهای بوده و در استان خوزستان روی رودخانه کارون در حال ساخت میباشد. پی سد در سازند آغاجاری قرار خواهد گرفت که شامل ماسه سنگ و گلسنگ بوده که به صورت تناوبی روی هم قرار گرفتهاند. مقاومت تکمحوره سنگهای مذکور به ترتیب برابر 15 و 25 مگاپاسکال است یعنی جزو سنگهای ضعیف و متوسط محسوب می شوند. عواملی مانند باربرداری مداوم روباره حاصل از فرسایش بر اثر جریان رودخانه و همچنین با...

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...

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