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Yamuna KALUARACHCHI
《工程管理前沿(英文)》 2021年 第8卷 第1期 页码 98-108 doi: 10.1007/s42524-020-0136-y
关键词: grey infrastructure green infrastructure smart infrastructure smart and green combined infrastructure smart cities future cities
刘思峰,林益
《中国工程科学》 2004年 第6卷 第8期 页码 91-94
基于对已有的几种灰数灰度定义的讨论,建立了灰数灰度定义的公理系统;以灰数灰度定义公理为准绳,由灰数产生的背景或论域及灰数取数域的测度构造出一种新的灰数灰度定义式。新定义克服了原有定义中存在的问题,较为科学地描述了灰数的不确定程度。
Tao FU, Jibin ZHAO, Weijun LIU
《机械工程前沿(英文)》 2012年 第7卷 第4期 页码 445-452 doi: 10.1007/s11465-012-0338-z
This paper investigates optimization problem of the cutting parameters in high-speed milling on NAK80 mold steel. An experiment based on the technology of Taguchi is performed. The objective is to establish a correlation among spindle speed, feed per tooth and depth of cut to the three directions of cutting force in the milling process. In this study, the optimum cutting parameters are obtained by the grey relational analysis. Moreover, the principal component analysis is applied to evaluate the weights so that their relative significance can be described properly and objectively. The results of experiments show that grey relational analysis coupled with principal component analysis can effectively acquire the optimal combination of cutting parameters and the proposed approach can be a useful tool to reduce the cutting force.
关键词: high-speed milling grey relational analysis principal component analysis parameters optimization
党耀国,刘思峰,刘斌
《中国工程科学》 2005年 第7卷 第8期 页码 31-35
现实生活中遇到的许多问题都具有不确定性,使得在对系统进行决策评估时,指标值难以精确化。在此情形下,人们常常对指标值给出一个区间,到目前为止, 尚未有人研究区间数灰靶决策。首先定义了区间数、m维区间数的距离及其距离性质,并证明了当区间数为实数时,区间数距离就是实数距离的推广;提出了区间数规范化方法,在此基础上, 建立了基于区间数的灰靶决策模型,从而把灰靶决策模型由实数序列拓展到区间数序列,使灰靶决策理论得到发展,同时为扩大灰靶决策的应用领域提供了理论根据。最后以实例验证了该模型的有效性与实用性。
Application of grey-taguchi method for optimization of dry sliding wear properties of aluminum MMCs
Rajesh SIRIYALA, Gopala Krishna ALLURU, Rama Murthy Raju PENMETSA, Muthukannan DURAISELVAM
《机械工程前沿(英文)》 2012年 第7卷 第3期 页码 279-287 doi: 10.1007/s11465-012-0329-0
Through a pin-on-disc type wear setup, the dry sliding wear behavior of SiC-reinforced aluminum composites produced using the molten metal mixing method was investigated in this paper. Dry sliding wear tests were carried on SiC-reinforced metal matrix composites (MMCs) and its matrix alloy sliding against a steel counter face. Different contact stresses, reinforcement percentages, sliding distances, and sliding velocities were selected as the control variables, and the responses were selected as the wear volume loss (WVL) and coefficient of friction (COF) to evaluate the dry sliding performance. An L25 orthogonal array was employed for the experimental design. Initially, the optimization of the dry sliding performance of the SiC-reinforced MMCs was performed using grey relational analysis (GRA). Based on the GRA, the optimum level parameters for overall grey relational grade in terms of WVL and COF were identified. Analysis of variance was performed to determine the effect of individual factors on the overall grey relational grade. The results indicated that the sliding velocity was the most effective factor among the control parameters on dry sliding wear, followed by the reinforcement percentage, sliding distance, and contact stress. Finally, the wear surface morphology and wear mechanism of the composites were investigated through scanning electron microscopy.
关键词: aluminum ANOVA (analysis of variance) grey relational analysis metal matrix composites SiC particulates Taguchi
Sustainable Program Quality Management of International Infrastructure Construction
Steve Hsueh-Ming Wang
《工程管理前沿(英文)》 2016年 第3卷 第3期 页码 239-245 doi: 10.15302/J-FEM-2016047
方志耕,刘思峰,陆芳,万军,刘斌
《中国工程科学》 2005年 第7卷 第2期 页码 57-61
针对目前区间灰数的表征和运算过程中存在着较为严重的问题,即:运算结果对灰数的灰度进行不必要的放大,造成信息的严重失真,笔者定义了标准区间灰数与第一和第二标准区间灰数的概念,分析了第一和第二标准区间灰数之间的关系,进一步设计了普通区间灰数与标准区间灰数之间的转换规则,提供了标准区间灰数之间的比较与运算法则,较好地解决了区间灰数之间的大小比较与运算问题。最后,将这一研究成果应用于基于区间数的GM (1, 1)模型预测问题,取得了良好的效果。
罗党,刘思峰
《中国工程科学》 2004年 第6卷 第10期 页码 48-51
以灰色系统理论和模糊数学为基础,探讨了不确定型决策问题的特性,分析了一些相关成果中所给方法在直接处理灰色模糊数方面的优势与不足。运用优化理论和熵极大化准则,建立了基于灰色模糊关系的多属性群体决策方法,分别对属性权重向量已知和未知两种情况给出了简便实用的算法,通过算例说明了算法的合理性。
Silk Roads for the 21st Century: Engineering Mega-Infrastructure for Development and Sustainability
Tony Marjoram
《工程管理前沿(英文)》 2016年 第3卷 第3期 页码 187-196 doi: 10.15302/J-FEM-2016038
关键词: infrastructure growth development sustainability change new Silk Roads
一种基于变异算子与淘汰重组机制的改进GWO及其应用 Article
Xiao-qing ZHANG, Zheng-feng MING
《信息与电子工程前沿(英文)》 2017年 第18卷 第11期 页码 1705-1719 doi: 10.1631/FITEE.1601555
毛占利,朱毅,杨伯忠,朱磊
《中国工程科学》 2010年 第12卷 第1期 页码 98-101
鉴于火灾事故的发生受多种复杂因素的影响,并且具有较大的随机性和波动性的特点,笔者等将灰色模型和马尔可夫模型相结合,建立火灾事故的灰色–马尔可夫模型,利用灰色模型的灰色性和马尔可夫模型的随机性来体现各自的优点,并运用该模型对全国农村火灾事故进行预测。实际应用表明,灰色–马尔可夫模型的预测精度明显高于灰色模型的预测精度,完全能满足预测精度的要求,可以较好地用于火灾事故的预测。
Fire hazard in transportation infrastructure: Review, assessment, and mitigation strategies
Venkatesh KODUR, M. Z. NASER
《结构与土木工程前沿(英文)》 2021年 第15卷 第1期 页码 46-60 doi: 10.1007/s11709-020-0676-6
关键词: fire hazard bridges tunnels fire resistance mitigation strategies transportation infrastructure
刘斌,刘思峰,党耀国
《中国工程科学》 2003年 第5卷 第9期 页码 32-35
阐述了嵌入知识的数据挖掘思想和数据挖掘技术现状,结合灰色系统理论首次提出了时序数据挖掘的灰色系统方法集(GDMS),并以灰色系统中的GM(1,1)模型为例,介绍了其具体算法。应用此算法对上海市2002~2005年的上网户数进行了预测。
Financing climate-resilient infrastructure: Determining risk, reward, and return on investment
Peter B. MEYER, Reimund SCHWARZE
《工程管理前沿(英文)》 2019年 第6卷 第1期 页码 117-127 doi: 10.1007/s42524-019-0009-4
Urban infrastructure investment is needed for both, mitigation of climate risks and improved urban resiliency. Financing them requires the translation of those benefits into measurable returns on investment in the context of emerging risks that capital markets can understand and appreciate. This paper develops a generic framework to identify what are the necessary and sufficient factors to economically favor climate-change resilient infrastructure in private investment decisions. We specifically demonstrate that carbon pricing alone will not generate the needed will, because market prices at present systematically fail to account for climate change risks such as the costs of stranded assets and the national and local co-benefits of investments in climate resiliency. Carbon pricing is necessary, but not sufficient for an enhanced private financing of climate-resilient infrastructure. The Paris Agreement and other supra-local policies and actors including city networks can concretely help to generate the sufficient social and political will for investments into climate change mitigation and resiliency at the city level.
关键词: infrastructure urban finance climate low carbon economy
邓卫,胡启洲
《中国工程科学》 2007年 第9卷 第11期 页码 21-25
在考虑信息不完全的情况下,用灰色模糊数对公交线网优化问题进行了研究。在给出了公交线网优化的约束条件与优化目标的基础上,利用灰色模糊数建立了公交线网优化的决策模型。灰色模糊数是用三参数区间参与优化过程,在允许参数在一定范围内变化的情况下,计算后得到的结果是一个区间向量,其中向量值最大的为所求结果,适用于城市公交线网的优化问题。实例应用分析表明,优化后的公交线网效率提高,可达性良好,可满足城市公交可持续发展的要求。
标题 作者 时间 类型 操作
Potential advantages in combining smart and green infrastructure over silo approaches for future cities
Yamuna KALUARACHCHI
期刊论文
Multi-objective optimization of cutting parameters in high-speed milling based on grey relational analysis
Tao FU, Jibin ZHAO, Weijun LIU
期刊论文
Application of grey-taguchi method for optimization of dry sliding wear properties of aluminum MMCs
Rajesh SIRIYALA, Gopala Krishna ALLURU, Rama Murthy Raju PENMETSA, Muthukannan DURAISELVAM
期刊论文
Sustainable Program Quality Management of International Infrastructure Construction
Steve Hsueh-Ming Wang
期刊论文
Silk Roads for the 21st Century: Engineering Mega-Infrastructure for Development and Sustainability
Tony Marjoram
期刊论文
Fire hazard in transportation infrastructure: Review, assessment, and mitigation strategies
Venkatesh KODUR, M. Z. NASER
期刊论文
Financing climate-resilient infrastructure: Determining risk, reward, and return on investment
Peter B. MEYER, Reimund SCHWARZE
期刊论文