加劲压力钢管结构优化设计

提出了改进加劲压力钢管设计的新思想,建立了加劲压力钢管结构优化设计的数学模型,介绍了约束非线性混合离散变量最优化方法的基本原理及其工程应用,研制了加劲压力钢管结构优化设计通用程序（ＯＳＤＰＲ）。结合工程实例,对加劲压力钢管进行优化设计,经济效益显著。     

盘式自动折叠纸盒结构设计中的数学模型

盘式自动折叠纸盒因其方便性得到了广泛的应用.本文讨论了盘式自动折叠纸盒的折叠角及体板高度等数学问题,为该类包装纸盒CAD开发建立了有效的数学模型.     

基于结构相似性和压缩变换的聚类方法

针对聚类分析在处理任意形状、任意密度和具有一定结构特征的数据集时存在的不足,首先在数据空间中建立离散拓扑流形,通过在此结构上定义邻域密度相似性和邻域密度变化光滑性两个相对性度量标准,并利用可达性给出样本结构相似性和类结构的定义,证明类结构关系是一个等价关系。然后将结构相似性当作吸引力,设计基于压缩变换的聚类方法,该方法具备处理任意形状、任意密度和解释性好等许多优点。最后在人工数据集和标准数据集上的比较实验结果表明,该方法在聚类效率和有效性上都明显优于其它聚类算法。     

一种针对图像模糊的无参考质量评价指标

在成像模型的基础上,分析了图像模糊的原因,提出了一种为图像构造参考图像的方法,进而将结构相似度(SSIM)评价方法引入到无参考图像质量评价中,提出一种无参考结构清晰度(NRSS)的新的无参考图像质量评价方法,将其用于对模糊图像的质量评价。该方法通过低通滤波器来构造参考图像,通过计算原始图像与参考图像的结构相似度值来评价原始图像质量,很好地结合了成像系统的数学模型和结构相似度评价方法的优势,实验结果表明无参考结构清晰度评价指标能够给出和主观评价方法以及其余有参考评价方法一致的结果。     

浅谈辽宁气象影视发展的新空间

由于气候变化的复杂化,提升了人们对气象的关注,同时也提升了媒体对气象节目的争夺,气象影视部门想要生存,就要不断的开发新的发展空间来适应市场的需求,同时达到气象宣传的目的。     

Technology adoption as process: A case of integrating an information-intensive website into a patient education helpline

This study followed the introduction of the Arthritis Source website into the existing teaching practices of Arthritis Foundation Helpline volunteers. The goal was to examine what factors may affect a particular group of educators adopt a potentially valuable Internet tool into an existing instructional environment. Defining the possible uses of the website in reference to the volunteers' actual job duties helped provide a clearer understanding of how the volunteers might use this new technology. The researchers used qualitative techniques to focus on three volunteers who experienced different physical, environmental and cognitive means that impacted their use of the new tool. Each volunteer experienced varying levels of motivation in areas of learning, satisfaction and responses to outside influences. Each volunteer also had varying amounts of opportunity prompts in which to interact or refer the website. Consequently, Helpline volunteers experienced different rates of adopting the information-intensive website into their traditional work system.     

APPLICATION OF REDUCIBLE CUTSET AND REDUCIBLE LOOP TO ANALYSIS OF THE NETWORK

New concepts of reducible independent cutset and reducible independent loop are developedthrough an analysis of the ladder network.A new analytic method,named structural analysis method,is pres-entod.It evaluates the controllability and observability of a network based on its structure rather than onits state equation.Some problems in the conventional network analysis can be solved using this method.Re-sults obtained by this method are in good agreement with those obtained by that of state space analysis,butthis method is much simpler in use.A practical example is given.     

三峡工程覃家沱特大桥的设计与施工

覃家沱特大桥是一座多功能的特大重载桥，桥型为三跨连续刚构，主梁１３０ｍ，主要设计荷载为汽１３５级挂６６０级，设计荷载相当于双线路路荷载，与目前国内同类经线铁路桥相比主跨度居国内第一，大桥上部结构箱梁采用单箱双室截面，设置纵，横，竖三向预应力；下部结构主墩为单壁实体墩，主墩及桥台基础均为灌注桩，在结构设计及重载挂篮悬臂施工技术等方面具有特点，对桥梁工程的设计与施工具有借鉴价值。     

A cluster-DEE-based strategy to empower protein design

The Medical and Pharmaceutical industries have shown high interest in the precise engineering of protein hormones and enzymes that perform existing functions under a wide range of conditions. Proteins are responsible for the execution of different functions in the cell: catalysis in chemical reactions, transport and storage, regulation and recognition control. Computational Protein Design (CPD) investigates the relationship between 3-D structures of proteins and amino acid sequences and looks for all sequences that will fold into such 3-D structure. Many computational methods and algorithms have been proposed over the last years, but the problem still remains a challenge for Mathematicians, Computer Scientists, Bioinformaticians and Structural Biologists. In this article we present a new method for the protein design problem. Clustering techniques and a Dead-End-Elimination algorithm are combined with a SAT problem representation of the CPD problem in order to design the amino acid sequences. The obtained results illustrate the accuracy of the proposed method, suggesting that integrated Artificial Intelligence techniques are useful tools to solve such an intricate problem.     

Consequence-based structural design approach for black swan events

The metaphor of black swan refers to unpredictable events like 9/11, the Indian Ocean tsunami, or the Oklahoma City Federal Building bombing, that cause catastrophic consequences for structural system safety. The likelihood of occurrence for such unforeseen events cannot be estimated from the observed data or prognosticated by experts. The absence of event and likelihood information renders futile the application of usual risk-based methods for design. Therefore, a shift from the probabilistic approach to consequence-based structural design is necessary for coping with the unexpected demands. This is accomplished through the conceptual development of a system capacity oriented design approach, where structural members are designed for variable reliabilities based upon their contribution to causing adverse system consequences. Information about general structural integrity encoded in the stiffness matrix is applied, using member consequence factors ranging from 0 to 1, for determining a member’s contribution towards system response. The structural system is designed using member consequence factors as additional partial factors on the resistance side of the design equations. The consequence-based scheme does not need a triggering hazard event (or its likelihood) and is an apt structural design approach for black swan events.