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Thomas Esch Hubert Asamer Felix Bachofer Jakub Balhar Martin Boettcher Enguerran Boissier 《International Journal of Digital Earth》2020,13(1):136-157
ABSTRACTThe digital transformation taking place in all areas of life has led to a massive increase in digital data – in particular, related to the places where and the ways how we live. To facilitate an exploration of the new opportunities arising from this development the Urban Thematic Exploitation Platform (U-TEP) has been set-up. This enabling instrument represents a virtual environment that combines open access to multi-source data repositories with dedicated data processing, analysis and visualisation functionalities. Moreover, it includes mechanisms for the development and sharing of technology and knowledge. After an introduction of the underlying methodical concept, this paper introduces four selected use cases that were carried out on the basis of U-TEP: two technology-driven applications implemented by users from the remote sensing and software engineering community (generation of cloud-free mosaics, processing of drone data) and two examples related to concrete use scenarios defined by planners and decision makers (data analytics related to global urbanization, monitoring of regional land-use dynamics). The experiences from U-TEP’s pre-operations phase show that the system can effectively support the derivation of new data, facts and empirical evidence that helps scientists and decision-makers to implement improved strategies for sustainable urban development. 相似文献
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两系杂交稻制种生产对气候生态条件有严格要求,确定制种生产基地时应当先对当地的气候生态适宜性进行科学地诊断与评估。该文系统地分析了气候生态条件对两系杂交稻制种生产的特定影响,提出了制种生产上应注重的两段气候生态安全期概念,研究了两段安全期的诊断评估方法,研制出了两系杂交稻种子生产时空择优气候服务系统,并据此确定了湖南全省两系杂交稻种子生产的适宜区域与时段。2000年初,湖南省有关部门采纳了此项建议,进一步规范了全省的两系制种生产管理。 相似文献
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Dynamic chaining of geographic information services (geo-services) is gaining popularity as a new paradigm for evolving flexible geo-information systems and for providing on-demand access to geo-information. In dynamic chaining, disparate geo-services are discovered and composed at run time to yield more elaborate functionality and create value-added geo-information. Common approaches to service chaining discover and compose disparate geo-services based on the functional capability of individual geo-services. The primary concern of common approaches is thus the emergent behavior of the resulting composite geo-service. However, as geo-services become mundane and take on a greater and more strategic role in mission critical processes, deliverable quality of service (QoS) becomes an important concern. QoS concerns operational characteristics of a service that determine its utility in an application context. To address pertinent QoS requirements, a new approach to service chaining becomes necessary. In this paper we propose a QoS-aware chaining approach in which geo-services are discovered, composed and executed considering both functional and QoS requirements. We prescribe a QoS management framework that defines fundamental principles, concepts and mechanisms which can be applied to evolve an effective distributed computing platform for QoS-aware chaining of geo-services – the so-called geo-service infrastructure. The paper also defines an extensible QoS model for services delivered by dynamic compositions of geo-services. The process of orthophoto generation is used to demonstrate the applicability of the prescribed framework to service-oriented geographic information processing. 相似文献
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本文针对应用气象服务网站设计的需求,分析其在现有技术下应用开发的实际经验,提出相应的设计方案. 相似文献
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Darug Ngurra Lexodious Dadd Paul Glass Marnie Graham Sara Judge 《The Australian geographer》2019,50(3):279-293
ABSTRACTIn non-urban places of Australia, caring-as-Country frames natural resource management (NRM) as a practice of reciprocal, more-than-human care-giving (S. Suchet-Pearson, S. Wright, K. Lloyd, and L. Burarrwanga. 2013. ‘Caring as Country: towards and ontology of co-becoming in natural resource management.’ Asia Pacific Viewpoint 54 (2): 185–197). Caring-as-Country is an idea that encapsulates the entangled, reciprocal relationships that people have with, and as part of, agentic more-than-human worlds. In more urbanised places, however, practices of caring-as-Country are often unrecognised, undervalued and undocumented. In this paper we make explicit practices of caring, healing and rejuvenation at Yellomundee Regional Park, Darug Country in western Sydney. Our discussion of care, entanglement and reciprocity at Yellomundee focuses on two specific activities that embody caring-as-Country: the return of cultural burns and sustained presence on Country in the form of Darug-led culture camps. The Darug principle of yanama budyari gumada, to ‘walk with good spirit’, embodies and invites new ways of thinking and practising intercultural caring-as-Country in heavily colonised, urban places like Yellomundee. As we document the practices arising from this invitation, we consider its far-reaching implications for NRM and planning, and we expand on the importance of geographies of care for unceded urban places. 相似文献
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以珠江三角洲基塘发源地——佛山市为例,采用市场价格法、影子工程法等方法,对2000、2009和2017年其基塘生态系统服务价值(ESV)进行估算,分析其变化特征,并利用地理探测器探讨其影响因素。结果表明:1)2000—2017年佛山市西、北部的芦苞镇、荷城街道等少数镇(街道)基塘面积有所增加,东、南部北滘、乐从镇等地基塘面积减少明显,期内基塘净减少19 244.47 hm2,主要转出地类为建设用地。2)2000、2009和2017年佛山市基塘ESV先降后增,3个年份中调节类功能占总价值比例均高于86%,为核心功能;各单项功能中旅游休闲价值增加最多,调节气候价值下降明显。3)佛山市基塘ESV空间变化呈西、北增而东、南降的特征,除塘鱼生产和旅游休闲功能外,其余单项功能的价值变化均呈现西南和北部增加明显的特征。4)第一产业生产总值变化量是影响佛山市基塘ESV时空变化的首要因素,其次是GDP、人口密度变化量等。建议采取控制开发规模、恢复绿色植被、加强生态监测和基塘整治、发挥基塘景观优势等措施来提高基塘ESV。 相似文献
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基于ASP.NET与SVG的WebGIS实现技术研究 总被引:3,自引:0,他引:3
随着WebGIS的快速发展,在WebGIS中以矢量的方式快速传输、浏览电子地图,是当前GIS研究的一个热点。ASP.NET具有强大的Web开发功能。SVG是一种基于XML的用来描述二维矢量图形和矢量/栅格混合图形的标记语言,本质上是XML在网络上表达图形图像的一种扩展应用程序。利用ASP.NET强大的Web应用开发功能与SVG矢量传输与显示功能,可构建功能较为强大、性能较为优化、数据较为安全和开发成本较为低廉的WebGIS。本文提出了一种基于ASP.NET与SVG技术的WebGIS平台解决方案,并对该方案的具体实现进行了详细的研究。 相似文献