结构主动控制的实验研究

结构主动控制是结构振动控制的一种最为有效的方式，属土木工程中的高科技领域，目前国内外对结构主动控制理论和算法已有一些研究，其试验研究很少，美国国家Ｂｕｆｆａｌｏ地震工程研究中心Ｔ．Ｔ．Ｓｏｏｎｇ教授进行了世界上第一个结构主动控制试验，本试验是我国第一个结构主动控制试验。本文针对五层钢框架（１：４）模型设计建立了主动质量阻尼（ＡＭＤ）主动控制系统，成功地完成了ＡＭＤ主动控制试验，并对试验结果进行了分     

结构控制与智能材料

伴随着社会生产力的发展，需要利用结构控制的设计思想和方法来代替传统的结构抗震设计思想和方法。本文综述了结构控制的概念、分类及常用结构控制方法和装置，并介绍了新型智能材料在建筑结构控制领域中的应用。     

一种新的隔震换能控制装置及其应用

提出了一种新的结构振动控制装置，该装置具有隔震换能和主动控制的双重功能。将该装置安装在建筑结构的隔震层处，在地震、大风等外荷载激励下结构的隔震层将产生较大的相对运动，由此可以驱动该控制装置发挥作用。此时由计算机控制，根据控制效果的需要可以使得该装置在隔震换能和主动控制的两种工作状态之间适时切换。本文建立了该装置的数学模型，提出了建筑结构隔震换能控制系统的分析方法和控制策略，并给出了一个结构控制仿真分析的算例。     

主动变刚度／阻尼系统的变结构控制

本文提出了主动变刚度／阻尼（ＡＶＳＤ）控制系统的理论模型，分析这一半主动控制系统的工作原理，基于变结构控制理论（ＶＳＣ）推导了ＡＶＳＤ控制系统全状态输出反馈控制律，还从实际工作应用出发，提出了一种只需观测系统部分状态的直接输出反馈的开关控制律。     

系统反应H∞优化控制理论在结构主动控制中的应用研究

本文分析研究了系统反应Ｈ∞优化控制理论在结构主动控制中的应用，对Ｈ∞优化控制理论的起源，分类，基本概念和主语进行了简要的介绍，对状态反馈（ＳｔａｔｅＦｅｅｄｂａｃｋ）和输出反馈（Ｏｕｔｐｕｔ－Ｆｅｅｄｂａｃｋ）的Ｈ∞优化控制计算方法分别进行了研究，并且使用ＭＡＴＬＡ软件中鲁棒控制工具箱（Ｒｏｂｕｓｔ－ＣｏｎｔｒｏｌＴｏｏｌｂｏｘ）的Ｈ∞标准问题优化控制计算程序对系统反应问题进行了分析，转换和计算，     

多态混合控制的控制机理

多态混合控制是一种新型的半主动，半被动的结构控制技术，本文揭示了多态混合控制的控制机理，指出了该控制具有明显的自适应性，数值仿真表明，其控制效果显著。     

高耸结构风振的主动控制研究

对采用张力索进行高耸结构风振控制的方法作了研究。首先，建立了由受控结构，张力索和液压伺服机组成的控制系统的数学模型；进而设计了控制器，比较了力型，力＋力矩型及力矩型三种张力索的实现形式和不同的控制作用下受控结构的振动水平及所需的控制力的大小；指出对于复杂结构，控制作用位置对张力索实现形式的选择及控制实现的难易程度有很大影响；‘讨论了随机风载的模拟；最后就某高耸复杂结构地进行了仿真研究。     

结构风振控制计算机仿真及算法比较

本文概述了结构风振控制计算机仿真的意义，阐述了仿真程序设计流程，并讨论了各种控制算法及其仿真结果。     

结构振动的离散变结构控制方法

采用离散系统建模技术和变结构控制系统设计的离散趋近律方法,对地震作用下建筑的振动控制问题进行了研究,给出了系统切换函数的确定方法,推导了系统控制律的表示式,算例分析结果表明,该控制方法能有效地减小结构的地震响应,对于结构抗震控制易于接受的特定采样时间间隔,控制效果优于相应基于连续时间系统的变结构控制方法。     

土木结构智能化中的若干力学问题

本文就智能材料在土木工程结构完全监测与控制方面的研究与应用进行了综述性评论，对 所存在的若干力学问题进行了分析和探讨。     

浅论如何实现矿业勘查与开发的可持续发展

矿业是国民经济的基础,关系到经济社会发展的方方面面;论述了矿产勘查与开发中存在着诸多有待解决的问题,它影响并制约着矿产勘查与开发的可持续发展战略;提出了要改变这种不利现状,必须坚持以科学的发展观来指导矿产勘查与开发事业,实现可持续发展战略。     

坚持科学的发展观,把握材料研究的发展战略

通过对科学发展观内涵及其指导意义的研究,指明在制定材料研究的发展战略时,必须坚持科学的发展观.进而以全面、协调、可持续的发展观为基本出发点,从建立产学研的创新体系、加大发展高科技材料及其产业的力度、加强实验基地建设、加速科技园区发展、重视人才、重视环保等多方面论述了材料研究的发展战略.     

Implications of Onshore Development on Global Software Engineering

Recently software industry has paid significant attention to customizing software products across distributed boundaries. Communicating the requirements of multiple clients across distributed borders is a crucial challenge for the software customization process. Local decision-making and local development at the client site are considered methods for reducing difficulties in communicating the requirements of multiple clients across distributed boundaries. This paper introduces a new model called the onshore development model (ODM) for accomplishing the customization requests in the distributed development process of software. This model presents a scenario for enhancing the onsite development of specific requirements to reduce delays and misunderstandings between the clients and the team involved. This model depends on moving the development process to the client’s location. Three empirical studies were conducted to evaluate the proposed model to measure its productivity, time performance, and cost reduction. The proposed model has been compared with two other models: the basic model (BM), which allocates the decision-making process and the development process for teams at the vendor’s location, and the local decision-making model (LDec), which assigns the decision-making process for team at the client’s location. The results of the empirical studies showed significant outperforming of the proposed model over the basic model and local decision-making model in productivity, time performance, and cost reduction. The productivity of the proposed model improved by 39% and 10% more than the basic model and the local decision-making model, respectively. In addition, the time performance of the proposed model became faster by 49% and 20.8% than the basic model and the local decision-making model, respectively. Also, it reduced the total cost of the development process by 31% in terms of the salaries of all persons involved in requirements collecting, decision-making, and development.     

运用因子分析及模糊数学法的区域Ec-Re-En协调发展研究

运用多元统计分析方法,构建区域资源、环境与经济协调发展系统结构图及评价指标体系,在此基础上,提出运用因子分析和模糊数学法对区域Ec-Re-En(经济-资源-环境)系统的协调发展状况进行系统的评价,探讨各系统的综合发展水平,并运用对应分析中因子得分的求解方法及模糊隶属度函数计算两两协调系数,寻求区域可持续发展的条件.广州的Ec-Re-En协调发展的实证分析表明,该方法为区域协调发展提供理论依据和可行性策略.     

Relationships between lean product development enablers and problems

The lean product development (LPD) approach uses lean principles and enablers (tools, techniques and practices) to reduce waste and continuously improve the product development processes (PDP). Other than reducing product development lead time, LPD also aims at improving quality by reducing problems that might occur during the process. Several LPD enablers are proposed in the existing literature; however, there is limited knowledge on how these enablers may effectively counteract the occurrence of problems in the PDP. We empirically tested the association between 4 groups of LPD enablers and 11 groups of LPD problems in a sample of 64 companies that are undergoing lean implementation in the shop floor and administrative areas. There are two major contributions here. First, we propose an empirically validated instrument for assessing the adoption of LPD enablers and the incidence of LPD problems in companies filling an existing gap in the literature. Second, we provide understanding on how LPD enablers can mitigate the incidence of LPD problems, allowing companies undergoing lean implementation to better manage their PDP. Moreover, some results demonstrate that the association between enablers and problems may not be as suggested in the existing literature.     

工业设计与可持续发展

阐述了工业设计与可持续发展的关系，可持续发展为工业设计提供了新的发展方向。论述了符合可持续发展战略在工业设计领域的应用前景，指出工业设计与可持续发展的紧密结合是企业创新的关键因素。     

Relationship between the development of energy and mineral resources and ecological conservation redline

From a philosophical point of view, this study discusses the dialectical relationship between the development of energy and mineral resources and the ecological conservation redline. We propose that the ecological conservation redline and the development of energy and mineral resources should be guided by ecological civilization construction, that is, the energy and mineral resources should be rationally developed under the condition that the ecological environment is protected. This study analyzes the influence of the development of energy and mineral resources on the ecological environment. The handling of mining rights within the ecological conservation redline based on the law and the reduction of the influence of the development of energy mineral resources on the ecological environment by science and technology are presented. The environmental assessment system and technical standards for energy and mineral development are suggested to implement policies and measures for the disposal of mining rights within the redline and facilitate technological innovations of ecological conservation for energy and mineral development. Hence, a coordinated development between the ecological conservation redline and the development of energy and mineral resources can be promoted.     

曲面片的可展度及其最佳展开基点

本文通过对不可展曲面近似展开误差机理的分析研究，提出了曲面片最佳展开基点和曲面片可展度的概念和实现方法。     

我国水能资源开发利用及环境与生态保护问题探讨

水能是清洁可再生能源，是实现可持续发展战略的优质能源。我国水能资源丰富，优先开发利用水能是我国能源发展的重要方针。开发利用水能资源，可减少开采煤炭和燃煤发电对环境的污染，有利于保护环境与生态。但修建大坝截断河道，使河流水沙情势发生变化，对环境与生态产生不利影响，应研究采取对策措施，处理好开发利用水能和保护环境与生态的关系。开发利用水能应按流域综合规划要求，科学合理和适度有序地进行，把开发水能与流域水资源综合利用、保护环境与生态和推动地区经济社会发展有机结合起来，切实做好移民安置工作，改善移民生活和生产条件，促进库区经济建设与环境保护协调发展。     

波束形成声源识别技术研究进展

波束形成作为一种空间声场可视化技术在声源识别领域得到广泛的研究和应用。概述了传声器阵列测量和波束形成后处理算法的发展历程,分析了其特点,总结了其发展方向,主要包括：声源识别性能更优的传声器阵列开发和算法改进、声源识别的适应性提高、波束形成结果不确定度的研究、基于声品质的声源成像及可视化研究等。对波束形成声源识别技术的认识及进一步的研究提供参考。