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埋地UPVC供水管线静力试验

沈阳建筑大学学报（自然科学版） 2009年第6期25卷 1069-1073页

作者：周静海刘飞杨永生沈阳建筑大学科技产业处辽宁沈阳110168 沈阳建筑大学土木工程学院辽宁沈阳110168 沈阳建筑大学学报编辑部辽宁沈阳110168

目的分析埋地UPVC地下供水管线柔性接口的抗震性能,建立力与接口位移的数学模型.方法在覆土的条件下,对接口采用胶圈连接的6根管径为315 mm和6根管径为200 mm UPVC供水管,进行抗拉静载试验.结果6组覆土管径315 mm和6组覆土管径200 mm试... 详细信息

目的分析埋地UPVC地下供水管线柔性接口的抗震性能,建立力与接口位移的数学模型.方法在覆土的条件下,对接口采用胶圈连接的6根管径为315 mm和6根管径为200 mm UPVC供水管,进行抗拉静载试验.结果6组覆土管径315 mm和6组覆土管径200 mm试件的P-S曲线的上下浮动不是很大,所以可以用平均值法取值.分别对两种管径的P-S关系曲线取平均值,进行二次曲线拟合和三次曲线拟合,建立了数学模型.结论二次多项式拟合误差较大,三次拟合误差较小,基本控制在±10%范围内,对于有精度要求实际工程中,建议使用三次多项式拟合模型.

关键词：管线抗震拟合精度误差分析

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圆盘与分形图像压缩编码算法

沈阳工业大学学报 2003年第2期25卷 147-149页

作者：郭志赵德平高丽佳程辉东北大学计算中心辽宁沈阳110004 东北大学信息科学与工程学院辽宁沈阳110004 沈阳建筑工程学院计算机系辽宁沈阳110015

分形图像压缩字典是实现分形图像压缩编码的关键因素,而由Barnsley设计的传统的分形图像压缩编码字典的不足之处是压缩字典还比较小.针对这一缺点,提出了一个较简单的非线性圆盘算法,简化了HongYan等提出的复杂非线性圆盘算法,用于解决... 详细信息

分形图像压缩字典是实现分形图像压缩编码的关键因素,而由Barnsley设计的传统的分形图像压缩编码字典的不足之处是压缩字典还比较小.针对这一缺点,提出了一个较简单的非线性圆盘算法,简化了HongYan等提出的复杂非线性圆盘算法,用于解决压缩字典较小的问题.实验结果表明,这一算法简单可行,并具有良好的压缩结果和高质量的重建图像.

关键词：分形图像压缩圆盘压缩字典编码算法

Discussion on Getting the Person Number by Video Behavior Analysis in Building Control Process

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Discussion on Getting the Person Number by Video Behavior An...

2011 2nd IEEE International Conference on Emergency Management and Management Sciences(ICEMMS 2011)

作者： Lin QIU school of environment and energy engineering Beijing university of civil engineering and architecture Beijing china Qiang Li

＜正＞As the load gained from the person is an important part in building automatic control system,the video behavior analysis technology can realize to grasp the actual person *** to the video images,the actual change of staffs in air-conditioning area can be obtained by the target detection method;then adjust air-conditioning load to match to the actual load in time and ensure the system’s energy-saving operation and building automatic control.

关键词： video behavior analysis person counting building automatic control

Construction and Enumeration of Steiner Triple Systems with Order s×t

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Construction and Enumeration of Steiner Triple Systems with ...

2011 Chinese Control and Decision Conference（CCDC）

作者： Xiao-Yi Li.is with the school of Mathematics and System Science,shenyang Normal university,shenyang,Liaoning,110034,china.Zhao-Di Xu.is with the school of Mathematics and System Science,shenyang Normal university,shenyang,Liaoning,110034,china.Wan-Xi Chou.is with the school of civil engineering and Architecture,Anhui university of Science and Technology,Huainan Anhui 232001.china.

The basic ideology of constructing Steiner triple systems with order s×t is *** edges matrix of a complete graph with arbitrary order v is defined.A method of constructing Steiner triple systems with order s×t is *** entire procedure of constructing Steiner triple systems with order 39 is *** problems of both construction and enumeration Steiner triple systems with higher order are solved.

关键词： Steiner triple systems Construction Complete graph Edges matrix Order

A new method of constructing Kirkman triple system

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A new method of constructing Kirkman triple system

2011 Chinese Control and Decision Conference（CCDC）

作者： Xiao-Yi Li is with the school of Mathematics and System Science,shenyang Normal university,shenyang,Liaoning,110034,china.Zhao-Di Xu.is with the school of Mathematics and System Science,shenyang Normal university,shenyang,Liaoning,110034,china.Wan-Xi Chou.is with the school of civil engineering and Architecture,Anhui university of Science and Technology,Huainan Anhui 232001.china.

The method of constructing Kirkman triple system with order 6n+3 is *** fundamental theory of constructing Kirkman triple system with order 6n+3 is described and the conclusion is *** process of construction Kirkman triple system with order 27 and 45 are proposed in *** conclusion suggested that the fundamental theory of constructing Kirkman triple system which provided a new and effective ways for constructing Kirkman triple system of order 6n+3.

关键词： Kirkman triple system Construction Order Primary matrix Set partition

Research on Product Family Modeling Method for Design Resource Reuse

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Research on Product Family Modeling Method for Design Resour...

2010 Second International Conference on E-Learning, E-Business, Enterprise Information Systems, and E-Government (EEEE 2010)

作者： Shouming Hou, Lijuan He school of Computer Science &Technology Henan Polytechnic university Jiaozuo, Henan Province, china Hualong Xie,Yongxian Liu school of Mechanical engineering and Automation northeastern university shenyang, Liaoning Province, china

In order to solve the problem that design resources can not be effectively managed in the process of product rapid response design, a product family modeling method of design resource reuse-oriented is proposed, and design resources reusable model based on the level of feature base is established. Based on Generic Bill of Materials (GBOM) structure tree of product family and master model technology, product family variant parameters transmission structure model is constructed, and product family design resource is established through instantiation to master model so as to realize product configuration and variant design in the construction of resource base. In the developing process of the rapid response design system of machine tool component, the Linear Motion (LM) rolling guide variant design subsystem is developed by the application of the above methods to realize the variant design and configuration management of LM rolling guide. The result shows that the method can provide a reliable guarantee for establishment and effective management of corporate design resource base.

关键词： Rapid response design Design resource reuse Product family modeling Variant design Master model.

Numerical manifold modeling of sliding instability of rock slope

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Numerical manifold modeling of sliding instability of rock s...

The 2nd ISRM International Young Scholars’Symposium on Rock Mechanics

作者： XJ.Mu,S.H.Wang,M.D.Guo & Z.P.Feng State Key Laboratory for Geomechanics & Deep Underground engineering,china university of Mining and Technology,Xuzhou,china S.H.Wang school of Resource and civil engineering,northeastern university,shenyang,china

The commonly used numerical method in geotechnical engineering like finite element method, distinct element method and discontinuous deformation analysis have different *** method has its own advantages and disadvantages with proper scope of *** Manifold Method(NMM) was originally developed by *** on the bases of Block Theory and Discontinuous Deformation Analysis (DDA) in the early ***'s a more general numerical method which can solve the problem of continuity and discontinuity,dynamic and static,large displacement and small *** paper introduces NMM briefly and model the spatial entity including three-dimensional finite random or fixed discontinuities using GeoSMA-3D which is an independent R&D *** addition,we simulate the sliding instability of a certain section by NMM.

关键词： Numerical manifold modeling of sliding instability of rock slope

应变软化模型在FLAC^(3D)二次开发中的应用

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水电能源科学 2009年第3期27卷 120-123页

作者：胡军朱巨建辽宁科技大学资源与土木工程学院辽宁鞍山114051

基于FLAC3D软件提供的二次开发平台,利用Visual C++语言在FLAC3D中成功实现了模拟土的应变软化本构模型的开发,通过算例计算结果与实测值比较验证了开发模型的正确性。以UserMohr模型为例,阐述了在FLAC3D中开发用户自定义模型应具备的... 详细信息

基于FLAC3D软件提供的二次开发平台,利用Visual C++语言在FLAC3D中成功实现了模拟土的应变软化本构模型的开发,通过算例计算结果与实测值比较验证了开发模型的正确性。以UserMohr模型为例,阐述了在FLAC3D中开发用户自定义模型应具备的基本知识和开发步骤,为其他用户进行FLAC3D的二次开发提供了参考。

关键词： FLAC3D 应变软化模型 UserMohr 二次开发土体弹塑性

Mixed uncertainty analysis of polycyclic aromatic hydrocarbon inhalation and risk assessment in ambient air of Beijing

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Journal of Environmental Sciences 2008年第4期20卷 505-512页

作者： College of Environmental Sciences and engineering, Peking university, Beijing 100871, china GUO Huaicheng LIU Yong HUANG Kai WANG Zhen ZHAN Xinye 不详 school of Natural resources and Environment University of Michigan Ann Arbor 48109 USA Department of civil and Resource engineering Dalhousie University Halifax NS B3JIZ1 Canada

This article presents the application of an integrated method that estimates the dispersion of polycyclic aromatic hydrocarbons （PAHs） in air, and assesses the human health risk associated with PAHs inhalation. An uncertainty analysis method consisting of three components were applied in this study, where the three components include a bootstrapping method for analyzing the whole process associated uncertainty, an inhalation rate （IR） representation for evaluating the total PAH inhalation risk for human health, and a normally distributed absorption fraction （AF） ranging from 0% to 100% to represent the absorption capability of PAHs in human body. Using this method, an integrated process was employed to assess the health risk of the residents in Beijing, china, from inhaling PAHs in the air. The results indicate that the ambient air PAHs in Beijing is an important contributor to human health impairment, although over 68% of residents seem to be safe from daily PAH carcinogenic inhalation. In general, the accumulated daily inhalation amount is relatively higher for male and children at 10 years old of age than for female and children at 6 years old. In 1997, about 1.73% cancer sufferers in Beijing were more or less related to ambient air PAHs inhalation. At 95% confidence interval, approximately 272-309 individual cancer incidences can be attributed to PAHs pollution in the air. The probability of greater than 500 cancer occurrence is 15.3%. While the inhalation of ambient air PAHs was shown to be an important factor responsible for higher cancer occurrence in Beijing, while the contribution might not be the most significant one.

关键词： polycyclic aromatic hydrocarbons (PAHs) uncertainty analysis human health risk