SEISMIC DESIGN AND ANALYSIS OF A KNEE BRACED FRAME BUILDING

A five-storey steel frame incorporating dissipative knee elements is designed using the Eurocode 8 pushover analysis method. The non-linear analysis makes use of a novel knee element model capable of accurately simulating the bending and shear behaviour observed in full-scale tests. The performance of the structure is assessed using non-linear time-history analysis. This shows that the knee elements can be designed to yield under small earthquakes or early in a strong one (maximising their energy dissipation) while still being able to withstand a large event without collapse. Knee elements thus have the potential to give excellent seismic performance in steel framed structures. The time history analysis results are compared to those obtained with the three different pushover analysis methods (Eurocode 8, FEMA 356 and ATC 40). The FEMA 356 method, which includes a more accurate representation of the structure's significant post-yield stiffness, gave the closest agreement with the time history analyses, while the Eurocode 8 method gave rather conservative results and the ATC 40 method appears non-conservative for this type of structure.     

文化传播与文化变迁

为了解释文化因素的发展过程,本文首先回顾了19世纪以来文化演变和文化传播的研究历史,然后概括了贸易、迁徙和文化扩散作为文化传播的三种方式,并对其作了具体分析。而且对文化变迁的动力,作者也提出了见解。     

Public parks in Ghent's City life: From expression to emancipation?

With three empirically based and theoretically framed case studies, this paper contributes to the understanding of how public spaces, more specifically urban parks, can mediate between different subgroups of society, such as women, seniors, gays and skaters, and how gender related connotations play an important role in these respects. This study draws upon a comparative analysis of three parks in Ghent, Belgium. The elements of analysis are the physical morphology, history, signification and the use by different kinds of park visitors. The article shows a new approach to design of public spaces.     

Experimental history: the appeal of postmodernism in historiography

Use, truth and time constitute the basic elements of the epistemological structure of history. That structure went through three stages: pre-modern (from ancient times to the late eighteenth century, before the professionalization of history took place), modern (the period of professional history, from the late eighteenth century to the 1970s), and post modern (post 1970s). In these three stages, use, truth, and time successively occupied the core of the epistemological structure of history. Postmodernist history, which puts time at the core of its epistemology, is an extreme form of historicism. Even more than historicism, it has emphasized the determining effect of time and change on historical truth and historical consciousness. The privatization of historical narrative and reading has prodded history to become experimental. Experimental history no longer proclaims the truth about the past. Instead, under specific historical circumstances, it strives to produce texts that will be recognized by individual historians and provides these texts to readers, who will make their own judgments. Whether these texts are true will be decided through the uses they produce. In this way, any historiographical practice will be an experiment conducted by an historian in the present and that will consist in searching for the truth about the past. The success of this experiment will depend entirely on the experimental environment, that is, on the conditions provided by the reading environment.     

FUTURE BY HISTORY: RETHINKING PHILOSOPHY OF HISTORY

Philosophy of history has a threefold dimension: material, formal, and functional, which have largely been conceptualized as mutually exclusive. It is high time to mediate them into a coherent relationship, and Rohbeck's book is a decisive step toward such a new philosophy of history. The book is divided into three parts: the first deals with the relationship between history and the future, the second analyzes the relationship between history and ethics, and the third synthesizes these two aspects into a pragmatics of history. With regard to the first part, historical thinking is based on a perception of temporal otherness related to the past. Rohbeck prolongs the time perspective by bridging this time gap into the future. As to the second, Rohbeck replaces teleology by ethics. Teleology includes ethics but limits its scope to a one‐sided development. Ethics allows many more options. Finally, who is the agent for historical ethics? Rohbeck proposes the “generation” as the basic actor in historical change and the addressee of ethical commitment. At the end of his work, Rohbeck draws consequences for the idea of philosophy of history from his idea of historical ethics. He shows that history has a new perspective if it is viewed through the lens of ethical elements in the fundamental relationship between past, present, and future. Of course, many questions follow this fascinating new version of the old philosophy of history. I raise only three of them: (1) What synthesizes the three dimensions of time into one and the same history? (2) Did we not learn from historicism that values in ethics have an inbuilt temporality? This argument does not run against the idea of an ethics of history, but should sharpen its genuine historical character. (3) Who is the agent of this change: who brings it about and at the same is subjected to it? An anonymous sum of generations in space and time is not a convincing answer. We need an integrative idea that covers the vast field of experience of the human world in space and time and that covers the strong commitment to universal values. In this respect it would be worthwhile to pick up the idea of humankind as it was conceptualized as the red thread of history in traditional, modern philosophy of history.     

先周文化研究述论

先周文化一直是考古学界关注的问题之一。自上世纪30年代至今,对于先周文化的研究,大致经历了三个阶段,形成了四种主要的观点。通过对刘家文化、郑家坡文化、关中西部商文化、碾子坡文化等的分析,我们认为郑家坡文化与西周文化一脉相承,以联裆鬲等为代表的文化因素是周人的固有文化因素。     

Experimental history: the appeal of postmodemism in historiography

Use, truth and time constitute the basic elements of the epistemological structure of history. That structure went through three stages: pre-modern (from ancient times to the late eighteenth century, before the professionalization of history took place), modern (the period of professional history, from the late eighteenth century to the 1970s), and post modern (post 1970s). In these three stages, use, truth, and time successively occupied the core of the epistemological structure of history. Postmodernist history, which puts time at the core of its epistemology, is an extreme form of historicism. Even more than historicism, it has emphasized the determining effect of time and change on historical truth and historical consciousness. The privatization of historical narrative and reading has prodded history to become experimental. Experimental history no longer proclaims the truth about the past. Instead, under specific historical circumstances, it strives to produce texts that will be recognized by individual historians and provides these texts to readers, who will make their own judgments. Whether these texts are true will be decided through the uses they produce. In this way, any historiographical practice will be an experiment conducted by an historian in the present and that will consist in searching for the truth about the past. The success of this experiment will depend entirely on the experimental environment, that is, on the conditions provided by the reading environment. __________ Translated from: Beijing Shifan Daxue Xuebao 北京师范大学学报 (Journal of Beijing Normal University), Vol. 5, 2004     

DRAMATIC ELEMENTS IN POLYBIUS' GENERAL HISTORY: AN ANALYSIS BASED ON THE MODEL OF THE CONNECTIVITY OF THE ANCIENT MEDITERRANEAN WORLD

The Histories composed by Polybius is the only extant historical work from the ancient world which directly criticizes the historical tradition "tragic history." Modern researchers generally agree that the reflections and criticism of Polybius on tragic history is one predominant feature of his "objective history." Nevertheless, in the structure of general history in The Histories, Polybius himself also uses certain dramatic elements, such as stage props, selection of historical materials, fictional asides and the tragic theme of tyche, to rationalize Romans' dramatic conquest of the whole Mediterranean within fifty-three years. Polybius' failure to exclude dramatic elements from The Histories reflects the limitation of the historiographic thoughts of Greek historians as well as the complex relationship between literature and history in the Hellenistic cultural context.At present, Global, Entangled and Transcultural History are commonly used key words in modern history, and also ancient history has partly taken over their ideas and concepts. With the present bibliographical survey of recent literature on the topic with regard to antiquity, the chances and challenges of conducting research under this perspective are examined.     

THE LOST ATLANTIS OF OBJECTIVITY: THE REVISIONIST STRUGGLES BETWEEN THE ACADEMIC AND PUBLIC SPHERES1

This article examines the theoretical and methodological implications of the revisionist debates. It focuses on the political, academic, and moral dimensions of the process of rewriting history and its interrelation with the public sphere. The article examines the recent debate in Greece and compares it with case studies of Germany, Spain, Israel, the Soviet Union, and Ireland. It comments on the common elements of these cases and proposes a basic typology of the revisionist debates in terms of similarities and differences. It categorizes the revisionist endeavors into three types: the successful, the failed, and the bewildered.     

EMOTIONAL TRANSLATIONS: CONCEPTUAL HISTORY BEYOND LANGUAGE

Conceptual history is a useful tool for writing the history of emotions. The investigation of how a community used emotion words at certain times and in certain places allows us to understand specific emotion knowledge without being trapped by universalism. But conceptual history is also an inadequate tool for writing the history of emotions. Its exclusive focus on language fails to capture the meanings that can be derived from emotional expressions in other media such as painting, music, architecture, film, or even food. Here emotion history can contribute to a rethinking of conceptual history, bringing the body and the senses back in. This article proposes a theoretical model to expand conceptual history beyond language by exploring three processes of emotional translation: First, how the translation between reality and its interpretation is mediated by the body and the senses. Second, how translations between different media and sign systems shape and change the meanings of concepts. Third, how concepts translate into practices that have an impact on reality. The applicability of the model is not limited to the research on concepts of emotion; the article argues that emotions have a crucial role in all processes of conceptual change. The article further suggests that historicizing concepts can best be achieved by reconstructing the relations that actors have created between elements within multimedial semantic nets. The approach will be exemplified by looking at the South Asian concept of the monsoon and the emotional translations between rain and experiences of love and romance.     

基于GIS的沈阳旧城区叙事空间研究

20世纪60年代,叙事学作为一门学科始于西方历史学、文学领域。直至20世纪末,叙事学开始转向空间领域研究形成空间叙事学,并被逐步应用到城乡规划中,尤其是城乡空间结构等领域。空间叙事学不仅关注城市发展中的物化要素,更加注重物化要素所代表的城市文化和城市记忆等非物化要素的深入挖掘,是探究场所本体与场所精神的重要研究思路。本文从空间叙事学出发,基于GIS平台运用核密度及K函数对古代、近代、现代三个时期沈阳旧城区人工叙事要素和人文事件叙事要素进行点模式量化分析,得出沈阳旧城区叙事空间的总体结构,以及叙事点核、叙事廊道、叙事簇群等叙事空间结构单元,指出沈阳旧城区叙事空间的动态发展性、功能多样性和历史传承性特点,探讨了叙事空间的经济驱动、自然要素、城市定位和交通发展四大演变机制。从人文地理学的视角出发,结合叙事空间理论对沈阳旧城区叙事空间进行分析,结果具有文化地理和城市地理双重属性,丰富了城市研究在该视角下的研究成果。     

历史博物馆展览的景观化建构:构成、思维与途径

历史博物馆展览作为被观看的客体,以历史遗存为基础、以叙事为核心、以沉浸式体验为吸引观众达成展览目标的途径。历史博物馆展览中的景观意味着由文物展品与多种媒介物构成的具有一定叙事与意义表达的空间图示,并具有“器-象-道”三个层面。景观化可以广义地理解为将零散的元素组织成为具有意义指向的整体。“象”作为蕴含着“器”与“道”的感知整体,是营造体验、让观众形成第一印象的关键所在,因而景观化建构应以“象”为先,根据各自的基础条件运用不同的建构途径--利用天然的历史景观、重构历史场景、景观化的文物组合,从而有助于历史博物馆打造更具吸引力与更具传播效能的展览。     

Toronto,an American city: Aspects of its postwar planning, 1940–1960

Toronto is conventionally considered quite unlike “American cities.” This article does not fundamentally challenge this convention, but does suggest that differences between Toronto and American cities may be overdrawn and that Toronto may have more American elements than is generally recognized. The evidence presented in this study comes from three episodes in Toronto’s postwar planning history: creation of an ambitious postwar master plan in 1943–44, formation of metropolitan government and planning in the mid-1950s, and the design and construction of the iconic suburban neighborhood of Don Mills also in the 1950s. All three show strong American planning connections. The article then offers some reasons why these American planning ideas did not produce an “American city,” and concludes by challenging the view that it is due to Canada having a fundamentally different urban culture.     

严复的历史观与历史研究方法

严复是近代学贯中西的著名学者 ,在史学理论和方法方面均有所创新和建树。他突破了传统史学的局限 ,提出从世界历史的视域探究历史规律 ,讨论了历史发展过程中内因和外因、历史阶段的可跨越性和不可跨越性问题。在研究方法上 ,提出运用新的历史研究法 :归纳研究法、中西比较研究法、天演涂术     

REOCCUPYING SECULARIZATION: SCHMITT AND KOSELLECK ON BLUMENBERG'S CHALLENGE

This article analyzes the compound of the categories of secularization and reoccupation in its variations from Hans Blumenberg's philosophy to Carl Schmitt's political theory and, ultimately, to Reinhart Koselleck's conceptual history. By revisiting the debate between Blumenberg and Schmitt on secularization and political theology with regard to the political‐theoretical aspects of secularization and the methodological aspects of reoccupation, I will provide conceptual tools that illuminate the partly tension‐ridden elements at play in Koselleck's theorizing of modernity, history, and concepts. For Schmitt, secularization is inherently related to the question of political conflict, and, correspondingly, he attempts to discredit Blumenberg's criticism of secularization as an indirectly aggressive, and thereby hypocritical, attempt to escape the political. To this end, I argue, Schmitt appropriates Blumenberg's concept of “reoccupation” and uses it alternately in the three distinct senses of “absorption,”“reappropriation,” and “revaluation.” Schmitt's famous thesis of political concepts as secularized theological concepts contains an unmistakable methodological element and a research program. The analysis therefore shows the relevance of the Blumenberg/Schmitt debate for the mostly tacit dialogue between Blumenberg and Koselleck. I scrutinize Koselleck's understanding of secularization from his early Schmittian and Löwithian theory of modernity to his later essays on temporalization of history and concepts. Despite Blumenberg's criticism, Koselleck holds onto the category of secularization throughout, but gradually relativizes it into a research hypothesis among others. Simultaneously, Koselleck formalizes, alongside other elements, the Schmittian account of reoccupation into his method of conceptual analysis and uses the term in the same three senses—thus making “reoccupation” conceptually compatible with “secularization,” despite the former notion's initial critical function in Blumenberg's theory. The examination highlights a Schmittian residue that accounts for Koselleck's reserved attitude toward Blumenberg's metaphorology, regardless of a significant methodological overlap.     

南京城市沿长江段景观规划研究

南京城市滨江带具有山、水、城、林、洲相融合的特色环境,以往滨江地段功能的主要是工业生产和港口运输。目前科学地进行滨江景观规划强调沿江的生态和旅游功能,这对于南京市的进一步发展有重要意义。本文通过对历史时期南京城市滨江带功能演变的分析,深入滨江带景观现状调查和研究,对各个区域景观要素探讨,提出景观规划的指导思想与原则,并依此进行南京城市滨江带景观规划,划分为六个特色区域:河西滨江段,下关滨江段,幕燕滨江段,江中洲地段,大厂滨江段,浦口珠江段。     

Dams,Drought and Water Shortage in Today’s Iran

Iran has a long history of effective and sustainable water resource management under arid and semi-arid conditions. However, today the country is faced with serious challenges in the water sector, including rising water demand and shortages, declining groundwater levels, deteriorating water quality, and increasing threats to the environment and various ecosystems. If these issues persist, tragedy will be the inevitable result. Over the last three decades tremendous efforts have been made to supply water, primarily through an extensive program of development, with dam building at the forefront. This paper offers an introduction to the different factors and elements influencing the water balance in today’s Iran and presents a perspective on the trend of dam building in recent times.     

"故事"与"古史":贯通20世纪二三十年代 "疑古"和"释古"的一条道路

一般认为20世纪二三十年代"疑古"与"释古"两条学术路向分别代表了破坏古史和重建古史两条不同的路线。这一看法大体成立。但二者在观念上也有不少相通乃至相同的地方。一方面,"重建派"学者在研究中也运用了与顾颉刚非常相似的"层累说"观察古史的构成,而历史研究中的"故事眼光"更成为贯穿"疑古"和"释古"的一条道路。另一方面,"疑古派"在辨伪过程中也发展出来一些与"重建派"非常相似的具有建设意义的观念,但因其给人留下的"破坏"的形象过强而被忽视了。     

微量元素示踪法在青铜器铜料来源研究中的应用与进展

本文简要回顾了微量元素示踪法在青铜器铜料来源研究中的应用历史,分析了其应用现状,以及在一个时期内应用不理想的深刻原因。在此基础上,阐述了微量元素示踪法有效应用的前提条件,并进一步介绍了这一方法的最新进展情况。     

东北地区人地关系百年变迁研究——人口、城市与交通发展

本文对东北地区百年来人口、城市、交通发展与人地关系变迁规律进行了研究。首先根据东北地区人地关系发展的性质把东北百年划分为3个发展阶段,然后对东北地区各个历史阶段的人口、城市与交通发展的历史现状进行了分析,最后揭示了人口、城市、交通之间及其与环境之间相互作用的机制,指出四者之间相互影响、相互渗透,组合为一个整体向前发展,并且这种发展受经济因素与政治因素的共同影响,是外力和内力双重作用的结果,共同成为影响东北地区人地关系的重要因素。