中外抗震规范设计反应谱的规定及研究建议          下载免费PDF全文

李琪  薄景山    齐文浩  牛洁  赵鑫龙 《世界地震工程》2021,(4):177-188

抗震设计规范中的场地设计反应谱是一般工程抗震设计的依据,各国的抗震设计规范对场地设计反应谱的规定不尽相同。主要表现在反应谱的形状和谱参数的差异。本文收集了若干国家的抗震设计规范;在总结各国抗震设计规范中关于场地设计反应谱规定的基础上,对中国、美国、日本、欧洲、土耳其和智利等有代表性的国家和地区的抗震设计规范进行分析和对比研究;总结了我国抗震设计规范场地设计反应谱的演化历史和发展过程;提出了进一步开展这一领域研究工作的若干建议,本文的工作对从事场地设计反应谱研究的科技人员有重要的参考价值。  相似文献   

Design and use of web lectures to enhance GIS teaching and learning strategies: the students’ opinions     

Kristien Ooms  Philippe De Maeyer  Bart De Wit  Ruben Maddens  Timothy Nuttens  Nico Van De Weghe 《制图学和地理信息科学》2013,40(3):271-282

The goal of this research is to design, use and evaluate a set of web lectures, specifically tailored to the needs of students in higher education who follow geographic information system -related courses. Since education in geographic information system includes theoretical concepts and practical experience, both of these teaching strategies will be implemented in the web lectures. The user-centered design approach is used in the design process to increase the acceptance of the web lectures and the motivation to use them: perceived usefulness and ease of use. The results show that the students appreciate the initial set of web lectures, but that they need to be motivated more to use them (especially when theoretical topics are covered). Students still value the “traditional” face-to-face lectures and see the web lectures as an ideal complement.  相似文献   

Twenty-three unsolved problems in hydrology (UPH) – a community perspective     

Günter Blöschl  Marc F.P. Bierkens  Antonio Chambel  Christophe Cudennec  Georgia Destouni  Aldo Fiori 《水文科学杂志》2013,58(10):1141-1158

ABSTRACT

This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by a need for stronger harmonisation of research efforts. The procedure involved a public consultation through online media, followed by two workshops through which a large number of potential science questions were collated, prioritised, and synthesised. In spite of the diversity of the participants (230 scientists in total), the process revealed much about community priorities and the state of our science: a preference for continuity in research questions rather than radical departures or redirections from past and current work. Questions remain focused on the process-based understanding of hydrological variability and causality at all space and time scales. Increased attention to environmental change drives a new emphasis on understanding how change propagates across interfaces within the hydrological system and across disciplinary boundaries. In particular, the expansion of the human footprint raises a new set of questions related to human interactions with nature and water cycle feedbacks in the context of complex water management problems. We hope that this reflection and synthesis of the 23 unsolved problems in hydrology will help guide research efforts for some years to come.  相似文献   

我国农村乡镇基层组织地震应急管理现状及分析          下载免费PDF全文

张元芳  胡艳艳 《地震工程学报》2013,35(S1):211-214

我国农村发生地震的概率要远远大于城市,农村面临的地震危险远远高于城市。农村地震应急管理工作是我国地震应急管理工作的重要组成部分,是切实减轻地震灾害和次生灾害的有效途径。如何做好农村地震应急管理工作,是我国农村乡镇基层组织需要考虑的重要问题。本文系统总结分析了目前我国农村乡镇基层组织地震应急管理工作的现状,存在的问题以及产生问题的原因,最后提出了加强农村乡镇基层组织地震应急管理工作的建议,力图为加强乡镇基层组织的地震应急管理工作提供借鉴。  相似文献   

论农村社区在地震保安方面职能的发挥     

徐传捷  哈辉  纪淑果  陈有顺  胡爱真  赵国伟 《高原地震》2013,(4):59-65,58

目前,农村民居的科学抗震设防日益受到社会各界的广泛关注。农村社区作为农村社会的组成部分,其在地震保安方面职能的发挥有着不可替代的地位,充分发挥农村社区的防震减灾功能对提高农村民居的抗震设防水平,最大限度地减轻地震灾害有着深远意义。通过对农村社区特征和功能以及在地震保安方面作用发挥的阐述,针对现今存在的主要制约因素,提出政策建议,供参考。  相似文献   

"Fostering Indigenous Innovation Capacities": The Development of Biotechnology in Shanghai's Zhangjiang High-Tech Park     

《Urban geography》2013,34(5):728-755

The Chinese government has recently formulated a long-term strategy to "foster indigenous innovation capacities" across technology sectors. The government provides incentives to attract global R&D investment and strives to upgrade its economic structure to develop China into "an innovation nation." This paper examines the exact meaning of this policy in the context of biotechnology development in Shanghai's Zhangjiang High-Tech Park (ZJHP). We suggest that the role of the municipal state has been critical in the initial stage of biotech concentration in the park, and in the later stage biotech developments in ZJHP have been encouraged to become embedded in the global knowledge flow. The development of ZJHP reveals a hybrid approach to the governance of innovation in China, which combines the developmental state and entrepreneurialism at the scale of the science park as an urban project.  相似文献   

The History of Archaeological Research in North East Greenland: Putting the GeoArk Project into Perspective     

Bjarne Grønnow 《Geografisk tidskrift / udgivet af Bestyrelsen for Det Kongelige danske geografiske selskab》2013,113(2):117-129

Geografisk Tidsskrift—Danish Journal of Geography 110(2):117–129, 2010

Starting with a brief presentation of the GeoArk Project and its goals, this paper focuses on the archaeological research history of North East Greenland, in particular the area of Sabine Ø and Clavering Ø, in order to view the current project in a wider context. The paper questions the myths about the ‘virgin’ land and it demonstrates how a number of expeditions, activities of professional hunters and trappers, and geopolitical matters in dispute between Denmark and Norway during the 1930s dramatically determined the quite ill fortune of the archaeological sites and monuments of the Thule culture in the study area.  相似文献   

Traversing Fantasies,Activating Desires: Economic Geography,Activist Research,and Psychoanalytic Methodology     

Stephen Healy 《The Professional geographer》2013,65(4):496-506

In this article I recount the ways that key concepts in Lacanian psychoanalytic theory—the relationship between language and desire, fantasy and subject formation, ethics and the traversal of fantasy—have enabled a novel methodological approach to activist research. Psychoanalysis allows us to recast research as a process of encountering and traversing fantasies, which is simultaneously a process of engendering new representations, desires, subjectivities, and societies.  相似文献   

Fieldwork Unbound: Spaces of Association in Postconflict Vietnam     

Jamie Gillen 《The Professional geographer》2013,65(4):599-609

This article traces the ways in which the field emerges and becomes emplaced among three groups of people by presenting an inclusive reading of fieldwork in postconflict Vietnam. It employs a heuristic device called spaces of association to illustrate the different yet interrelated socio-spatial fields that surface when conducting fieldwork in an environment known for violence. In shedding light on the field's ability to extend beyond the territorially defined “field site,” this article speaks to debates surrounding the socio-spatial production of multiple and overlapping fields, describes the audiences engaged with and implicated in research, and contributes to understandings of ethical research engagement with postconflict field sites.  相似文献   

Breaking Out: The Opportunities and Challenges of Multi-Method Research inPopulation Geography     

《The Professional geographer》2013,65(1):76-89

Research traditions exert a powerful influence over the thinking of academic researchers. In population geography an entrenched empiricism and a reluctance to engage in wider debates on theory and method within human geography have resulted in a degree of separate development. Such methodological complacency has, until recently, threatened to undermine population geography's role within the discipline as a whole. Thus the discussion of multi-method research designs is of particular significance because it offers population geographers an opportunity to break out from the confines of a dominant research tradition and participate with other human geographers in an important methodological debate. This paper seeks not only to provide a critical overview of the current debate within population geography (as represented in the preceding papers in this Focus section) but also to extend that debate by raising issues of much more general concern. I argue that there are dangers in drawing the terms of the debate too narrowly. If we are to understand the nature and potential of multi-method research, we must first pose fundamental questions about the interrelationships among methods, data, and research problems. Pragmatic views on the choice of research method are inadequate because they fail to recognise the theory-driven nature of research. Only once we have achieved a better understanding of the philosophical grounding of research strategies will the opportunities afforded by multi-method research be fully realised.  相似文献