geospatial data Articles
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A unified index structure for efficient enforcement of spatiotemporal authorisations
Uncontrolled dissemination of geospatial data may have grave implications on national security and personal privacy. Geospatial data can be considered sensitive based on attributes such as the location, resolution and the time of capture, etc. As such, authorisations associated with this data also possess spatial and temporal attributes. The main contribution of this paper is to improve the ...
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Urban planning support systems in Japan: evolutions and implications
This paper introduces Japan's institutional efforts on city–level information systems and geospatial databases in various historical phases in the context of urban planning and e–government. The study of urban planning information systems and geospatial data building has been led by the national government from the beginning since 1970s. However, single purpose GISs, such as UIS in ...
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Why do water points fail? Learning from open-ended failure descriptions in the WPDx dataset
Despite the explosion of geospatial data collected on water points, there have been relatively few efforts to date to use these data to understand the correlates and potential causes of water point breakdowns. We add to this literature by coding open-ended responses around functionality status in the open-access WPDx (Water Point Data Exchange) database. We code responses into 41 different ...
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Six technologies that shaped EH&S
This year, the Air & Waste Management Association celebrates its centennial. The past 100 years have yielded remarkable technological advances, especially in the area of information technology (IT). Within our professional lifetimes, we have shifted from using manually typed memos and reports, pink telephone message slips and pagers to computer-generated reports, Internet data exchange, e-mail, ...
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The use of assemblage models to describe trace element partitioning, speciation and fate: A review
The fate of trace elements in soils, sediments and surface waters is largely determined by their binding to reactive components of which organic matter, metal oxides and clays are considered most important. Assemblage models, combining separate mechanistic complexation models for each of the reactive components, can be used to predict the solid‐solution partitioning and speciation of trace ...
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Online tools `decentralising disaster relief efforts`
Disaster response and relief efforts are becoming more dynamic and decentralised with the development of web-based geospatial technologies, says a study. Researchers writing in Disasters evaluated the experiences of Harvard University's Center for Geographic Analysis (CGA) during the Sichuan and Haiti earthquake responses in 2008 and 2010, respectively. They found that the conventional ...
By SciDev.Net
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Risk Assessment Considerations With Regard to the Potential Impacts of Pesticides on Endangered Species
Simple, deterministic screening‐level assessments that are highly conservative by design facilitate rapid initial screening to determine whether a pesticide active ingredient has the potential to adversely affect threatened or endangered species. If a worst‐case estimate of pesticide exposure is below a very conservative effects metric (e.g., the no observed effects concentration of the most ...
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How to Create a Hydrological Map Portal
Hydrology databases make it possible to map, track and observe water resources. Monitoring and modelling the data is essential in creating a sustainable system for managing the public water supply. Having to find and track down needed information manually is inefficient and unreliable, especially when taking into consideration that all assessments and analyses are made with geospatial data ...
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New study assesses the global volume and distribution of “modern” groundwater
Groundwater has long been an important resource for spraying, drinking water, energy production and more, but getting a clear picture of how much is available and being recharged over time has been a challenge. Now an international group of hydrologists led by Tom Gleeson, engineering professor at the University of Victoria, with fellow researchers from the University of Texas at Austin, the ...
By Ensia
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Balancing the future of Europe`s coasts — knowledge base for integrated management
This report has three elements. Firstly, it gives a snapshot of the current state of Europe's coastal regions. Secondly, it assesses the policies used to manage coastal regions, and discusses the proposal for a new European directive to improve the management of coastal regions. Thirdly, it highlights the need for better information and better monitoring tools to help inform this management ...
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Mapping Water Taps to Ensure WASH Infrastructure and Safe Drinking Water for the Entire Population of Kumba (Cameroon)
Ensuring safe and clean water for the people across Africa is one of the greatest problems on the continent. Water sources are often miles from towns and villages, so people are forced to spend hours each day simply finding and transporting potable water back to their homes. In the city of Kumba (Cameroon), displaced people settled in their farms lack safe water access, and most of them and ...
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WISPR Accuracy Study - RESEPI M2X vs. XT-32
Introduction What is a LiDAR Payload? LiDAR stands for Light Detection and Ranging and has become an increasingly prevalent technology over the past decade. NASA and meteorologists have used LiDAR, now embedded within cell phones with the release of the iPhone 12 Pro. LiDAR is commonly used in surveying, mapping, and inspection applications where it can provide very detailed and accurate ...
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Geographic information systems, key to efficient water management
The supply of drinking water is one of the greatest challenges currently facing a large part of the world’s regions. According to the latest data published by the UN, water losses in water distribution networks are a major concern, with Non-Revenue Water or non-billed water accounting for the supply of water to almost 200 million people. Digital transformation plays a major role in solving ...
By Idrica
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Digital Transformation of Field Operations in a Water Utility Company Using GIS Cloud - Case Study
Digitizing the process of field data collection and infrastructure data management utilizing the GIS Cloud platform, Liburnian waters achieved a multilevel collaboration with local governments, increased their data accuracy, and reduced job timeframe by eliminating paper forms. The implementation of field inspection via surveys on mobile phones had the biggest impact on their workflow, the ...
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NextGen GIS and the Environmental Database
Next Generation (NextGen) Geospatial Information System (GIS) and U.S. Department of Energy (DOE) Cold War legacy sites environmental records—spanning nearly 40 years—in the Environmental Database, are managed by the DOE Office of Legacy Management (LM). As key LM assets, these records must be managed and maintained efficiently and effectively. There are over 16 different applications ...
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Shellfisheries: Time to prepare for ocean acidification
Both physical and social factors must be considered as coastal communities brace for an uncertain future. Oceans are gradually becoming warmer and more acidic as more carbon dioxide enters the atmosphere — two shifts that are altering the economic foundations of many coastal regions. In a new study published in Nature Climate Change, we and our colleagues set out to identify hot spots ...
By Ensia
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