物我之境:田园/城市/建筑 2011成都双年展国际建筑展主题演绎

文章围绕2011年成都双年展国际建筑展"物我之境:田园/城市/建筑"的主题,在当代中国城市化的现实语境下,对"物/我"、"田园/城市"、"人/环境"等概念进行诠释和演绎。     

“兴城杯”国际高校学生设计竞赛概述

文章从竞赛的背景、组织、进程与获奖作品简析等几个方面,对"田园/城市/建筑——‘兴城杯’国际高校学生设计竞赛"进行综合性概述。     

建筑大底盘的自然通风采光

建筑设计采用下沉式庭院、天窗、天井等形式达到建筑大底盘地下车库的通风采光,可降低污染、减少能耗。     

“无为而为”的设计--沈阳东陵森林公园入口区设计思考

在重要的历史文化区内进行景创作,我们选择了一种无为而为的特殊方式。东陵森林公园入口区景观设计一方面要在东陵世界文化遗产面前做到“无为”,尽量避免喧宾夺主．与陵园古建筑群在尺度与风格上发生冲突、另一方面,更要使入口区起到整合公园的作用。形成较强的引导性,并且能进一步烘托东陵陵园的历史感与文化感,这构成了一种“有为”!方案以线性的方式自然展开．以厚重的自然红墙为元素,以充满历史感的门形象为节点、方案与东陵古建筑群融为一体,和谐共生,传承了皇家陵园庄重静谧的历史文化意境。     

Evaluation of buckling-restrained braced frame seismic performance considering reserve strength

Buckling-restrained braced frame (BRBF) systems are used extensively for resisting lateral forces in high seismic regions of the United States. Numerical and large-scale experimental studies of BRBFs have shown predictable seismic performance with robust ductility and energy dissipation capacity. However, the low post-yield stiffness of buckling-restrained braces (BRBs) may cause BRBFs to exhibit large maximum and residual drifts and allow the formation of soft stories. Thus, reserve strength provided by other elements in the lateral-force-resisting system is critical to improving seismic performance of BRBFs. This reserve strength can be provided in two primary ways: (1) moment-resisting connections within the BRBF and (2) a steel special moment-resisting frame (SMRF) in parallel with the BRBF to create a dual system configuration. These two approaches to providing reserve strength can be used together or separately, leading to a variety of potential system configurations. In addition, special attention must be given to the connections within the BRBF since moment-resisting connections have been observed experimentally to limit drift capacity due to undesirable connection-related failure modes. This paper presents nonlinear dynamic analysis results and evaluates performance of BRBF and BRBF-SMRF systems using moment-resisting and non-moment-resisting beam-column connections within the BRBF. Reserve strength is shown to play a critical role in seismic behavior and performance of BRBFs.     

疏干补偿法与渗渠（一）：开采储量释疑

井流和沟流的水,实际上是从水面以上,在其降落并扩大过程中排除的储存水,并沿垂直方向供应着,重力水从土壤颗粒间排除后减为薄膜水每需1—2天,垂直供水可以维持很久,潜流也决不会绝对稳定。除此,潜水降落漏斗的范围以及潜水储存量的类型也在此加以介绍。     

裂缝性泥岩油气藏勘探方法

针对寻找裂缝性泥岩油气藏的技术难题，系统总结了国内外裂缝性泥岩油气藏勘探方法，并归纳出裂缝性泥岩气藏勘探方面的一些具体经验，为今后裂缝性泥岩油气藏的勘探提供借鉴作用。     

论集对分析(SPA)在软件质量评价体系建立中的运用

本文阐述了软件产品及其测评方式内在固有的不确定性，介绍了集对分析的基本理论，并建立了一种基于集对分析的软件质量评价体系。通过充分的证明，基于SPA理论的软件质量测评方法科学、准确、快速。     

�Ĵ������������ֲ��ķֲ�ͳ���о�

分形体系是具有标度不变性的自相似结构，可定义为酋从幂律分布客体的标度不变集。应用分形分面概念和方法，对四川盆地各层系的气藏分层统计研究的结果表明，在一定区域各层系内气藏的体积分布很好地酋从幂律分布规律，是一种分形分布，其分维值介于０．１４－０．６１之间，分维可作为客体间相对重要性的度量值。通过对气藏与油藏体积分布分维值差异的比较和对四川盆地不同层系气藏体积分布分维特征的研究后认为，分维还反映了裂不     

Nature of the metal-support interface in supported metal catalysts: Results from X-ray absorption spectroscopy

X-ray absorption spectra characterizing the metal-support interface in supported metal complexes and supported metal catalysts are summarized and evaluated. Single-metal-atom transition metal complexes on non-reducible metal oxide supports are bonded with metal-oxygen bonds with metal-oxygen distances of approximately 2.15 A; the bonding distance is only weakly sensitive to the oxidation state of the metal. Nearly this same metal-oxygen distance is characteristic of the metal-support interface in metal-oxide-supported metal clusters following high temperature reduction in H₂ (HTR:T > 450 °C). The metals at the interface may be polarized sufficiently that they bond with the oxygen of the support much as the cations in mononuclear complexes bond with it. When the supported metals are treated in H₂ at low temperatures (LTR:T < 350 °C) or are prepared under He with partially hydroxylated supports, a longer metal-support oxygen distance is observed, typically 2.5–2.7 Å. This distance is suggested to characterize interactions between zero-valent metals and support oxygen. Changes in the performance of supported metal catalysts resulting from differences in the temperature of pretreatment in H₂ are attributed to changes in the electronic properties and/or morphology of the metal clusters, which are suggested to be related to the concomitant changes in the structure of the metal-support interface.