نتایج جستجو برای: مدلهای gis
تعداد نتایج: 39664 فیلتر نتایج به سال:
BACKGROUND Data analysis in community health assessment (CHA) involves the collection, integration, and analysis of large numerical and spatial data sets in order to identify health priorities. Geographic Information Systems (GIS) enable for management and analysis using spatial data, but have limitations in performing analysis of numerical data because of its traditional database architecture....
امروزه آلودگی هوا در شهرهای بزرگ دنیا سلامت انسانها را به مخاطره کشانده است. شهر تهران نیز از این قضیه مستثنی نبوده است و آلودگی در این شهر به یک چالش بزرگ برای مدیریت شهری تبدیل شده است. در پژوهش کنونی به مدلسازی مکانی غلظت آلاینده PM2.5 با بهرهگیری از مدل رگرسیون وزندار جغرافیایی از خانواده مدلهای آماری محلی پرداخته شده است. برای این مدلسازی از 18 ایستگاه سنجش کیفیت هوای شهر تهران استفاده ش...
This paper describes the 3D GIS research efforts done by the GIS research groups as well as by major GIS software vendors world wide, namely Environmental System Research Institute (ESRI) Inc., ERDAS Inc., Integraph Inc., and PCI Geomatics Inc. Research works done by the authors of this paper formed major discussion of this paper including a discussion on why the 3D GIS software is difficult to...
The functionality of spatial process analysis is the foundation of GIS’s comprehensive application . To realize such a goal. it is desirable that not only the data model of GIS can represent the datasets needed by spatial process models, but also GIS is able to do multitemporal spatial analysis. But most of current GISs are static in essence, they cannot represent temporal information and tempo...
An organization’s strategies for managing Geographic Information Systems (GIS) play a crucial role in the success of the technology within the organization. As with any technological innovation, the key factor in GIS success is how it is applied to solve the organization’s business problems. Corporatewide strategies to introduce, implement, and operate the GIS determine how well it serves busin...
Gross chromosomal rearrangements (GCRs) play an important role in human diseases, including cancer. The identity of all Genome Instability Suppressing (GIS) genes is not currently known. Here multiple Saccharomyces cerevisiae GCR assays and query mutations were crossed into arrays of mutants to identify progeny with increased GCR rates. One hundred eighty two GIS genes were identified that supp...
The integration of building information modelling (BIM) and geographic information system (GIS) in construction management is a new and fast developing trend in recent years, from research to industrial practice. BIM has advantages on rich geometric and semantic information through the building life cycle, while GIS is a broad field covering geovisualization-based decision making and geospatial...
This paper describes an approach to reconstruct the complete history of a 3-d scene over time from imagery. The proposed approach avoids rebuilding 3-d models of the scene at each time instant. Instead, the approach employs an initial 3-d model which is continuously updated with changes in the environment to form a full 4-d representation. This updating scheme is enabled by a novel algorithm th...
One of the law-like regularities of psychological science is that of developmental progression – an increase in sensorimotor, cognitive, and social functioning from childhood to adulthood. Here we report a rare violation of this law – a developmental reversal in attention. In Experiment 1, 4to-5-year-olds (N= 34) and adults (N = 35) performed a change detection task that included externally cue...
The purpose of this paper is to develop the GIS educational environment in training program using open-source GIS software. First, we have verified the substitutability of laboratory exercise materials at our university from commercial GIS to open-source GIS software. Next, we grasp the improvement situation of the free spatial data that are opened to the public by the government and present th...
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