7 research outputs found

    Integrated non-invasive remote-sensing techniques and field survey for the geoarchaeological study of the Sud LĂ­pez mining district, Bolivia

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    New investigations have been carried out in the framework of a joint French-Argentine project dealing with the mineral resources and the metal production in the Andean plateau from the 10th to the 18th century. Geoarchaeology of the Sud LĂ­pez, southern Bolivia, is revisited using multisource remote-sensing data including archive data from the 1960s and recent very high resolution (VHR) data simultaneously acquired with field work. The detailed geological mapping of the area is allowed by the field survey complemented by the multispectral and VHR data. The emphasis is on integrating all the geological features such as morphologies, petrology of the volcanics, lithology of the volcano-sedimentary rocks, regional and local faulting, veins, hydrothermally altered rocks, etc. GeoEye-1, which features the most advanced technology ever used in a civilian remote-sensing system, allows the detailed mapping of the archaeological remains that are particularly numerous at San Antonio de LĂ­pez, with shallow pits, shafts connected in depth with adits, and large slag areas. Particularly, the plan of three old miners' villages has been drawn and its accuracy has been evaluated.Fil: Deroin, Jean Paul. Universite de Reims-Champagne Ardenne; FranciaFil: TĂ©reygeol, Florian. Centre National de la Recherche Scientifique; FranciaFil: Cruz, Pablo. SecretarĂ­a de Cultura de la NaciĂłn. DirecciĂłn Nacional de Cultura y Museos. Instituto Nacional de AntropologĂ­a y Pensamiento Latinoamericano; Argentina. Consejo Nacional de Investigaciones CientĂ­ficas y TĂ©cnicas; ArgentinaFil: Guillot, Ivan. Centre National de la Recherche Scientifique; FranciaFil: MĂ©audre, Jean Charles. Centre National de la Recherche Scientifique; Franci

    Rainwater Harvesting in Rural Jordan: A GIS and remote sensing-based analysis of ancient and modern adaptations to water scarcity in a changing environment

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    This study investigates the topic of rainwater harvesting on the Karak Plateau located in rural Jor-dan. The term rainwater harvesting describes various methods and structures employed for the collection, storage and use of rainwater and resulting (on-site) surface runoff. Within the scope of traditional water management, over millennia, many of these techniques were developed, refined and applied in Jordan, as well as in other, especially semiarid, regions of the world. This tradition is rooted in the natural water shortage of the plateau and frequent absence of other reliable sources of fresh water. Today, population growth, climate change and local effects of globalization and global change are leading to growing water shortages in the MENA region (Middle East and North Africa) and many other parts of the world. In the search for sustainable solutions for this problem, traditional as well as new strategies of rainwater harvesting have recently been receiving increasing interest. The present study contributes to an enhanced understanding of the applicability and the potential of some of the most widely-used, traditional rainwater harvesting methods, especially the use of cisterns. The mapped structures were examined taking into account the settlement history and the respective circumstances of the natural and human environment. Possible determining factors concerning site preferences and resulting patterns in the spatial distribution of rainwater harvesting sites have been detected. The diachronic comparative analysis revealed changes in human-environment-interactions, particularly with regard to the significance and management of local water resources under natural shortage. The collected data enabled the detailed estimation of the rainwater harvesting potential and the suggestion of possible ways to improve and expand current rainwater harvesting schemes and efforts. The integration and possible role of rainwater harvesting strategies were discussed with regard to modern, sustainable water management and supply. Additionally, the applicability of modern geoinformation techniques was evaluated. Remote sensing techniques and methods of image analysis, particularly with regard to the interpretation of satellite images of very high resolution, were examined especially. The combination of ground truth and other information from fieldwork and remote sensing-based data and techniques has proven most suitable and efficient. The mostly remote sensing-based mapping of rainwater harvesting structures and the establishment of a comprehensive database formed the basis for all subsequent analysis and possible further, sustainable planning steps. The semiautomatic analysis of the satellite imagery provided detailed information on land use/land cover and building rooftops and thus decisively contributed to the improvement of the (input) data basis. All in all, the collected data enabled a significantly enhanced, quantitative estimation of the rainwater harvesting potential of the study area. Many of the gained findings and insights can be transferred onto other dry areas and regions with similar environmental or socio-economic conditions

    Urban Informatics

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    This open access book is the first to systematically introduce the principles of urban informatics and its application to every aspect of the city that involves its functioning, control, management, and future planning. It introduces new models and tools being developed to understand and implement these technologies that enable cities to function more efficiently – to become ‘smart’ and ‘sustainable’. The smart city has quickly emerged as computers have become ever smaller to the point where they can be embedded into the very fabric of the city, as well as being central to new ways in which the population can communicate and act. When cities are wired in this way, they have the potential to become sentient and responsive, generating massive streams of ‘big’ data in real time as well as providing immense opportunities for extracting new forms of urban data through crowdsourcing. This book offers a comprehensive review of the methods that form the core of urban informatics from various kinds of urban remote sensing to new approaches to machine learning and statistical modelling. It provides a detailed technical introduction to the wide array of tools information scientists need to develop the key urban analytics that are fundamental to learning about the smart city, and it outlines ways in which these tools can be used to inform design and policy so that cities can become more efficient with a greater concern for environment and equity

    Urban Informatics

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    This open access book is the first to systematically introduce the principles of urban informatics and its application to every aspect of the city that involves its functioning, control, management, and future planning. It introduces new models and tools being developed to understand and implement these technologies that enable cities to function more efficiently – to become ‘smart’ and ‘sustainable’. The smart city has quickly emerged as computers have become ever smaller to the point where they can be embedded into the very fabric of the city, as well as being central to new ways in which the population can communicate and act. When cities are wired in this way, they have the potential to become sentient and responsive, generating massive streams of ‘big’ data in real time as well as providing immense opportunities for extracting new forms of urban data through crowdsourcing. This book offers a comprehensive review of the methods that form the core of urban informatics from various kinds of urban remote sensing to new approaches to machine learning and statistical modelling. It provides a detailed technical introduction to the wide array of tools information scientists need to develop the key urban analytics that are fundamental to learning about the smart city, and it outlines ways in which these tools can be used to inform design and policy so that cities can become more efficient with a greater concern for environment and equity

    Urban Informatics

    Get PDF
    This open access book is the first to systematically introduce the principles of urban informatics and its application to every aspect of the city that involves its functioning, control, management, and future planning. It introduces new models and tools being developed to understand and implement these technologies that enable cities to function more efficiently – to become ‘smart’ and ‘sustainable’. The smart city has quickly emerged as computers have become ever smaller to the point where they can be embedded into the very fabric of the city, as well as being central to new ways in which the population can communicate and act. When cities are wired in this way, they have the potential to become sentient and responsive, generating massive streams of ‘big’ data in real time as well as providing immense opportunities for extracting new forms of urban data through crowdsourcing. This book offers a comprehensive review of the methods that form the core of urban informatics from various kinds of urban remote sensing to new approaches to machine learning and statistical modelling. It provides a detailed technical introduction to the wide array of tools information scientists need to develop the key urban analytics that are fundamental to learning about the smart city, and it outlines ways in which these tools can be used to inform design and policy so that cities can become more efficient with a greater concern for environment and equity

    Practice development in community nursing: principles and processes

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    DLR's Remote Sensing Technology Institute has a long lasting experience in developing spaceborne stereo scanners (MEOSS, MOMS) and the corresponding photogrammetric software systems for stereo evaluation and orthorectification. It takes part in the ESA/JAXA-AO Program to evaluate the performance and potential of the three-line stereo scanner PRISM and the multispectral imaging sensor AVNIR-2 on-board the Japanese satellite ALOS as a principal investigator. The high geometric resolution of PRISM (2.5 m ground sampling distance at nadir) combined with the medium swath width of 35 km has the potential to achieve high quality Digital Elevation Models up to 1:25.000 scale topographic maps for various applications. One of the proposed test sites is located near Sana’a, Yemen, where additionally to the PRISM stereo data also an IKONOS stereo image pair exists, which is used for DEM comparison and performance analysis. The results of this test site are evaluated in cooperation with the Federal Institute for Geosciences and Natural Resources (BGR), Hannover. The paper gives a report on the generation of digital surface models (DSM) and orthoimages from ALOS/PRISM 3-line stereo data using DLR’s automated stereo processing chain. Ground control points (GCP) of sufficient accuracy are introduced to increase the geometric accuracy of the derived DSM and orthoimages, but as well as evaluations without using GCP shall demonstrate the pointing performance of the ALOS/PRISM system. After the images are prepared for the processing, a matching is performed between the three images in forward, nadir and backward direction using a hierarchical intensity based matching. Sub-pixel accuracy is achieved by a local least squares matching. Blunder reduction is done by thresholds and bi-directional matching. A densification of the tie points is achieved by a region growing algorithm based on local least squares matching. From the obtained tie points, object space coordinates are derived from two different methods to interpolate a regular grid to create a DSM. For the first method Rational Polynomial Coefficients (RPC) are generated for the PRISM images. For the second method a rigorous approach is applied using the exterior and interior orientation parameters as input for the forward intersection. Both methods are compared and the applicability of RPC for PRISM is discussed. Finally the resulting DSM is compared to the DSM generated from the IKONOS stereo pair and evaluated regarding horizontal and vertical accuracy by 3D shift determination between the individual DSM, as well as profile analysis at different terrain steepness. The possible potential of the derived results is demonstrated for an integrated water resource management in Amran (Yemen), where satellite data of sufficient resolution can provide important information of the changing agrarian areas and resultant water supply. Assessment of potential location for water dams can be derived from high quality DEM. Also terrace cultivation in Yemini mountain valley environment is endangered by mass movements, particularly rock and land slides triggered by flash flood after heavy rainfalls. Susceptibility mapping and monitoring using DEM and land use information from ALOS PRISM and AVNIR-2 data can contribute to these topics
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