共查询到20条相似文献，搜索用时 62 毫秒
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基于WebGIS的旅游景区空间智能评价系统研究 总被引：3，自引：0，他引：3
针对现有信息系统在空间智能评价方面的薄弱之处,运用WebGIS空间智能集成方法探讨旅游景区空间智能评价系统的设计和实现,从三方面提高了旅游景区评价系统的智能化层次:通过集成旅游景区网上调查问卷系统,提高了数据收集提取的智能化层次;通过集成旅游景区模糊综合评价模型、客流结构评价模型及旅游专家知识系统,增强了评价系统的半结构化智能推理功能;采用B/S C/S系统构架,并利用Web技术提高了人机交互界面的智能化。周庄景区案例评价结果显示,该系统原型的运行效果良好且智能化层次较高。 相似文献
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基于GIS的物流配送系统的设计与实现 总被引：7，自引：0，他引：7
根据物流配送的实际需要，结合GIS的基本理论和方法，研究分析了物流配送系统中数据的采集、处理、管理、电子地图显示、查询统计，并着重研究了运营过程中车辆的监控和调度管理、路径选择、配送区域的划分等核心问题，对系统进行了详细的总体模块设计和功能设计，建立了基于GIS的物流配送系统模型，实现了系统的整体框架，此系统的构建对于物流企业来说具有重要的指导意义。广州南方物流公司应用此方案，极大地提高了企业的管理水平和经济效益。 相似文献
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GPS技术在交通中的应用 总被引：1，自引：0，他引：1
在“数字交通”的规划建设中，如何结合GPS技术解决交通堵塞、运营车灵活调度并大力发展交通智能化管理，显得特别重要。本文就GPS移动目标监控系统的设计、实现模式分析和GPS技术在交通中的典型应用进行探讨。 相似文献
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智能技术的影响已经渗透到城市的不同方面,空间要素的流动更快更复杂,城市功能需要进行调整以适应居民活动的变化,城市空间的智能化发展与运营管理也成为新的挑战。论文从城市空间要素组织、居民活动与空间功能、空间运营管理3个方面梳理当前智能技术对城市空间的影响,并展望未来5~10 a的城市空间应具有瞬时异地、空间智能化、复杂流动性以及韧性能力更强的特点,最后从城市空间组织、功能形态、运营管理与规划方法4个方面探讨了未来的城市空间研究需要关注的重点内容,以期为智能技术影响下的城市空间研究与规划设计提供参考。 相似文献
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黄河水量调度管理决策支持系统建设研究 总被引：2，自引：0，他引：2
黄河水量调度管理决策支持系统的开发建设,为黄河水资源的科学管理、优化调度和有效保护提供全方位的现代化手段和快捷的智能决策支持.在系统的设计和开发过程中,充分体现了软件系统所要求的先进性与实用性、安全性与可靠性、标准化与开放性以及完整性与一致性相结合的原则.主要介绍了系统的建设目标、结构、决策内容、目标和各个模块功能,并详细论述了模型库构建和应用服务平台建设等系统开发的关键技术.系统运行中达到了满意的效果,值得进一步的完善和推广,并对流域的水资源管理和统一水量调度等方面具有较强的指导意义和实用价值. 相似文献
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陈颖 《亚热带资源与环境学报》2003,18(3):7-11
在"数字交通"的规划建设中,如何结合GPS技术解决交通堵塞、运营车灵活调度并大力发展交通智能化管理,显得特别重要.本文就GPS移动目标监控系统的设计、实现模式分析和GPS技术在交通中的典型应用进行探讨. 相似文献
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随着全球气候变化的加剧和城市化进程的快速发展,洪涝灾害的影响和复杂性日益加剧。洪涝灾害风险评估是一项复杂的系统工程,在防洪减灾工程理论与实践中具有重要意义;作为洪涝灾害风险管理和应急处置的基础和核心,风险评估模型直接影响洪涝灾害风险评估结果的可靠性。洪涝灾害风险是洪涝灾害复杂系统组成部分相互作用的结果,综合考虑洪涝灾害系统的特点以及智能体建模的优势,提出了一种基于多智能体的洪涝风险动态评估理论模型。首先从复杂系统建模的角度出发,对洪涝灾害复杂系统进行分析建模,构建基于多智能体的洪涝灾害风险动态评估框架模型;其次,对所构建的框架模型中单个智能体模型进行研究,分别建立基于反应型的孕灾环境智能体模型和基于慎思型的致灾因子、承灾体和风险分析智能体模型,并对以上单个智能体的流程进行研究;然后以风险分析智能体联盟为例对模型框架中所涉及到4类智能体联盟的内部结构和流程进行分析,对构建的框架模型中涉及到的智能体通信协调和作用规则进行探讨;最后,在Netlogo平台上,基于30 m DEM数据和构建的模型,对淮河流域的暴雨型洪涝孕育发生发展全过程的人口风险进行动态评估。结果表明,构建的模型能有效评估洪涝灾害全过程中人口风险的动态。研究结果对洪涝灾害人口灾情评估、应急救助和应急管理都具有较强的指导意义。 相似文献
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龙口市水资源优化调度系统的设计与应用研究 总被引：3，自引：6，他引：3
水资源优化调度非常复杂，需要考虑各种供水水源与国民经济各部门的需水要求在时空分布上的差异，还要考虑地表水与地下水之间的转化关系、地表水库与地下水库之间的补偿调节，并根据这些变化，在一定调度原则下，确定供水在不同地区、部门、行业及企业之间的分配，使水资源效益最大。介绍了龙口市水资源优化调度系统的构建方法、调度模式及应用效果。 相似文献
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In the past decade, there has been significant investment in Intelligent Transportation Systems (ITS) technologies that provide information to both en‐route and pre‐trip travelers. However, there is no definitive evidence that en‐route travelers actually use the information and alter their travel patterns. Previous research employed surveys that relied on motorists' written or spoken responses to questions involving travel information and hypothetical roadway scenarios. This research examines travel behavior on freeways equipped with ITS technologies in Connecticut using collected real‐time traffic count data from the diversionary roadways. Results find that more travel is occurring on the diversionary routes during periods of variable message sign (VMS) messages than during equivalent periods having no messages, indicating a motorist travel response to these messages. 相似文献
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Staying with the system: theoretical consistency and change in Danish geographical work on the Sahel
Laura Vang Rasmussen Jonas Ø. Nielsen 《Geografisk tidskrift / udgivet af Bestyrelsen for Det Kongelige danske geografiske selskab》2014,114(1):3-16
Scholars have studied the Sahel intensely since major droughts hit the region in the early 1970s. One of the most persistent of these in terms of both volume and time span is Anette Reenberg. In this paper we explore her studies of the Sahel published in peer-reviewed journals and their impact over the last three decades. Reenberg has had a remarkably stable theoretical agenda concerned with the importance of understanding the social and biophysical systems as one coupled human-environmental system. This agenda has influenced contemporary as well as subsequent Danish scholars publishing on the Sahel. Taking papers published in Geografisk Tidsskrift-Danish Journal of Geography as an example we show how scholars have moved from treating aspects of the Sahelian droughts according to the traditional natural-social science divide towards a much more coupled manner. This rise of the coupled human-environmental system framework in the journal may be attributed to Reenberg’s theoretical agenda as well as a new international stream of research joining the human and environmental sciences in an interdisciplinary effort. Hence, it is also shown how Reenberg’s theoretical agenda have influenced scholars trying to grasp contemporary global change. This is especially evident in the land science community. 相似文献
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Bent Hasholt 《Geografisk tidskrift / udgivet af Bestyrelsen for Det Kongelige danske geografiske selskab》2013,113(1):54-90
Karlsgårde Hydroelectric Power Station in SW Jylland had troubles with sedimentation in reservoir and canals. The extent of it has been measured and, throughout one year, monthly measurements were made of the bed load transport and of suspended load transport in the rivers flowing to the power station. A relation between discharge and bed load transport as well as between discharge and suspended load transport has been calculated. The amount of material transported during an “average year” has been found by means of duration curves. Some of the applied methods are described. The bed load transport was measured by various methods a.o. by measurement of the downstream advance of the bedforms. Fluorescent- coloured sand was used as tracer material. Its migration gave a qualitative impression of the intensity of the material transport which proved to be in good accordance with the other results. However, this method is too laborious for a quantitative determination of sediment transport. 相似文献
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Sam Ock Park 《Urban geography》2015,36(6):864-882
This study develops a conceptual framework of the relationship between corporate systems and urban systems in the process of intangible asset accumulation and conducts case studies involving two distinctive and contrasting global firms. Intangible assets are important in maintaining the competitive advantage of cities and regions. The accumulation of local intangibles is the result of the evolutionary development of the relationship between the corporate system and the urban system. The results of the study suggest that the intangible assets of firms are critical in ensuring their competitiveness within a knowledge-based information society. 相似文献
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Even two decades after independence in 1991, the agricultural sector of Uzbekistan remains regulated by the government, prescribing the number of cattle head per agricultural area or imposing mandatory cash crops. The policy makers are insufficiently informed about the bottlenecks in the different livestock production units and base their policies mainly on general knowledge. This study analyzed the two major cattle farm types in the Khorezm province, 56 medium-scale farms (LS; on average 22 ha) and 80 household farms (HH; on average 0.2 ha). While LS farms produced more metabolizable energy and crude protein than required by their own ruminant livestock, the feeds produced by HH farms covered only a third of the requirements. Despite their limited farm size, the HH farmers took an active part in the commercial farming sector, for example, through the purchase of inputs for cattle and crop production, and product sales. The HH farms generated higher relative crop yields than their LS counterparts, while cattle productivity of both was comparable, albeit low. The present findings can be considered as a benchmark for monitoring developments in the cattle sector and as a source of information for directing improvements in feed supply, cattle health and husbandry. 相似文献
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Agriculture represents less than 2 per cent of the GDP of New Caledonia where the economy (and wage-earning activities) is dominated by the service sector and the nickel industry. However, family farming remains strong, especially for the Indigenous Melanesian tribes of the east coast of New Caledonia. Yams (Dioscorea spp.) are still one of the pillars of traditional Kanak society despite the social and economic changes that followed colonisation by France. This study of Kanak yam cultivation on the north-eastern coast of New Caledonia underscores the fact that yam cultivation systems have greatly changed since the 1950s, when they were last described. In addition to customary gift exchanges and subsistence consumption, yams are increasingly being grown for market sales. Five cropping systems, three yam production systems, and three Kanak social activity systems are described and their linkages to each other are explained. There are three levels of Kanak market participation: none, transitional, and fully engaged, and the extent of market participation and associated technical choices defines farmers’ levels of cultural activity and the nature and characteristics of yam cultivation. 相似文献
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我国现行农用地评价体系比较研究 总被引：6，自引：0，他引：6
对新中国农用地评价研究进行分析,认为中国现行农用地评价体系有农业部的耕地质量评价体系和国土资源部的农用土地分等定级估价体系两大类.两大体系在评价的目标、内容、指标和方法体系上存在着区别,但最终目标都是实现农用地资源由"数量管理"向"数量、质量和生态"并重管理的转变,实现土地资源的环境友好利用.新时期,在农用地流转的背景下,通过论述比较两大评价体系,指出现行评价体系存在的问题,并给予展望. 相似文献
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In physical geography, systems are seen as a unity of parts and relationships, whereas human geographers using a second-order sociological systems approach define systems in terms of the difference between system and environment. Starting from this, dialogue between physical and human geographers using terms derived from systems theory is mostly in vain. This article explores some of the consequences that follow for dialogue in geography: the differences in defining systems, in the understanding of processes, the problem of system borders, the inconsistent understanding of the 'environment' itself as well as the different epistemology that comes with it (or leads to it). The article tries to bring systems theory back into geography with the decisive aim of enhancing the potentials for interaction between human and physical geographers and, therefore, to explore the possibility of connecting the social with the physical world – deviating from systems theory. 相似文献
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