Results 11 to 20 of about 3,419,908 (255)

Understanding the use of geographical information systems (GISs) in health informatics research: a review

open access: yesBMJ Health & Care Informatics, 2017
Background The purpose of this literature review is to understand geographical information systems (GISs) and how they can be applied to public health informatics, medical informatics and epidemiology.
N. Shaw, S. McGuire
semanticscholar   +1 more source

The Scale Effect on Spatial Interaction Patterns: An Empirical Study Using Taxi O-D data of Beijing and Shanghai

open access: yesIEEE Access, 2018
Spatial scale is a fundamental issue for geographical phenomena because the size of the spatial unit adopted for analysis can have a significant effect on aggregated spatial data and the corresponding analytical results. There exists much research on the
Shiliang Zhang   +5 more
doaj   +1 more source

Inundation analysis of metro systems with the storm water management model incorporated into a geographical information system: a case study in Shanghai

open access: yesHydrology and Earth System Sciences, 2019
. This study presents an integrated approach to evaluate inundation risks, in which an algorithm is proposed to integrate the storm water management model (SWMM) into a geographical information system (GIS).
H. Lyu, S. Shen, Jun Yang, Z. Yin
semanticscholar   +1 more source

Building a Spatially-Embedded Network of Tourism Hotspots From Geotagged Social Media Data

open access: yesIEEE Access, 2018
The rapid development of social media and location-based service has generated a myriad of spatial data tagged with geo-information. Constructing a network of tourism hotspots using these geotagged data would improve our understanding of tourism ...
Xinyu Wu   +4 more
doaj   +1 more source

Mapping Water Quality Parameters in Urban Rivers from Hyperspectral Images Using a New Self-Adapting Selection of Multiple Artificial Neural Networks

open access: yesRemote Sensing, 2020
Protection of water environments is an important part of overall environmental protection; hence, many people devote their efforts to monitoring and improving water quality.
Yishan Zhang   +6 more
doaj   +1 more source

Investigating Snow Cover and Hydrometeorological Trends in Contrasting Hydrological Regimes of the Upper Indus Basin

open access: yesAtmosphere, 2018
The Upper Indus basin (UIB) is characterized by contrasting hydrometeorological behaviors; therefore, it has become pertinent to understand hydrometeorological trends at the sub-watershed level.
Iqra Atif   +2 more
doaj   +1 more source

Ground Validation and Error Sources Identification for GPM IMERG Product over the Southeast Coastal Regions of China

open access: yesRemote Sensing, 2020
The Integrated Multi-satellitE Retrievals for the Global Precipitation Measurement mission (IMERG) has been widely evaluated. However, most of these studies focus on the ultimate merged satellite-gauge precipitation estimate and neglect the valuable ...
Xinxin Sui   +5 more
doaj   +1 more source

A fine-grained navigation network construction method for urban environments

open access: yesInternational Journal of Applied Earth Observations and Geoinformation, 2022
Fine-grained navigation is becoming increasingly demanded in urban areas. However, current navigation software fails to provide accurate paths on grounds without roads (GWR) like residential communities, squares, parks, etc.
Xiayin Lou, Min Sun, Shihao Yang
doaj   +1 more source

Principles of Geographical Information Systems for Land Resources Assessment

open access: yes, 1986
Geographical information systems Data structures for thematic maps Digital elevation models Data input, verification, storage, and output Methods of data analysis and spatial modelling Data quality, errors, and natural variation: sources of error Errors ...
P. Burrough
semanticscholar   +1 more source

تحديد مناطق الولاية البحرية لليبيا ومنازعاتها: دراسة في الجغرافيا السياسية باستخدام نظم المعلومات الجغرافية [PDF]

open access: yesMaǧallaẗ Kulliyyaẗ Al-Adāb - Ǧāmiʿaẗ Al-Fayūm
شهدت منطقة حوض شرق البحر المتوسط نزاعات مختلفة بين العديد من القوى السياسية عبر التاريخ، وفي الوقت الحاضر ومع اكتشاف احتياطيات كبيرة من المواد الهيدروكربونية، تزايدت المطالبات البحرية للدول المشاطئة للبحر المتوسط على مناطق الولاية البحرية في الظهور، مما ...
أنور سيد كامل   +1 more
doaj   +1 more source

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