为优化变压器选型与成本控制,首先,采用全生命周期成本(life cycle cost,LCC)理论和逼近理想解排序(technique for order preference by similarity to an ideal solution,TOPSIS)法,基于多项变电站工程变压器数据,探究变压器LCC构成及...为优化变压器选型与成本控制,首先,采用全生命周期成本(life cycle cost,LCC)理论和逼近理想解排序(technique for order preference by similarity to an ideal solution,TOPSIS)法,基于多项变电站工程变压器数据,探究变压器LCC构成及电压等级、接线方式、冷却方式等7项影响因素,对影响因素进行加权评估,并计算变压器LCC的各分项成本;其次,通过控制变量法量化电压等级等4项关键因素对变压器LCC的影响,探究关键因素对变压器成本机制的耦合效应,确定35 kV、220 kV及330 kV变压器LCC最低方案。结果显示,电压等级显著影响变压器LCC,接线方式与冷却方式对其的影响也较大;各分项成本在LCC中的占比保持相对稳定;单因素影响下,电压等级越高,变压器LCC越高,而是否为智能变压器对短期成本影响较小,长期来看智能变压器更具经济性。展开更多
产业开发区内多发环境污染导致的邻避(not in my backyard,NIMBY)问题对经济发展和社会稳定造成了一定的阻碍,其中工业企业是主要的邻避设施,目前对该类邻避效应的研究及对邻避效应大小的定量评价方法尚不完善。文章以合肥市高新区为例...产业开发区内多发环境污染导致的邻避(not in my backyard,NIMBY)问题对经济发展和社会稳定造成了一定的阻碍,其中工业企业是主要的邻避设施,目前对该类邻避效应的研究及对邻避效应大小的定量评价方法尚不完善。文章以合肥市高新区为例,以区域内的工业企业为研究对象,提出新的邻避效应评价方法。在评价体系中,将企业规划布局的合理性和大气防护距离也作为邻避效应评价指标,采用模糊最优最劣决策法(best-worst method,BWM)计算指标权重,并通过逼近理想解对不同工业企业的邻避效应大小进行排序。研究结果表明,风险感知和大气防护距离是影响邻避效应的最主要因素,通过敏感性分析确定该评价方法有较好的可靠性和鲁棒性,为决策者解决产业开发区的邻避问题提供思路和依据。展开更多
Heavy-duty machine tools are composed of many subsystems with different functions,and their reliability is governed by the reliabilities of these subsystems.It is important to rank the weaknesses of subsystems and ide...Heavy-duty machine tools are composed of many subsystems with different functions,and their reliability is governed by the reliabilities of these subsystems.It is important to rank the weaknesses of subsystems and identify the weakest subsystem to optimize products and improve their reliabilities.However,traditional ranking methods based on failure mode effect and critical analysis(FMECA)does not consider the complex maintenance of products.Herein,a weakness ranking method for the subsystems of heavy-duty machine tools is proposed based on generalized FMECA information.In this method,eight reliability indexes,including maintainability and maintenance cost,are considered in the generalized FMECA information.Subsequently,the cognition best worst method is used to calculate the weight of each screened index,and the weaknesses of the subsystems are ranked using a technique for order preference by similarity to an ideal solution.Finally,based on the failure data collected from certain domestic heavy-duty horizontal lathes,the weakness ranking result of the subsystems is obtained to verify the effectiveness of the proposed method.An improved weakness ranking method that can comprehensively analyze and identify weak subsystems is proposed herein for designing and improving the reliability of complex electromechanical products.展开更多
为提升陶瓷产品在文化叙事维度的表达效能。本研究基于叙事设计理论,整合出意象、行为和意境的三文化要素库,结合采用层次分析法(Analytic Hierarchy Process,AHP)确定造型功能、文化表达及情感感知等规范层权重,与逼近理想解排序法(Tec...为提升陶瓷产品在文化叙事维度的表达效能。本研究基于叙事设计理论,整合出意象、行为和意境的三文化要素库,结合采用层次分析法(Analytic Hierarchy Process,AHP)确定造型功能、文化表达及情感感知等规范层权重,与逼近理想解排序法(Technique for Order Preference by Similarity to Ideal Solution,TOPSIS)对多组叙事文本方案进行量化评估。以山西八义窑红绿彩瓷为研究对象,通过权重分析与方案排序,最终筛选出“莲花+象征+雅趣”为最优叙事主题。通过探讨“莲华智韵”智能灯具的设计策略,验证了理论运用的可行性,证实叙事设计方案能有效增强文化认同感。为传统工艺的现代表达提供了可量化的解决方案,推动传统陶瓷设计从功能载体向文化媒介的范式转型,对文化遗产的现代转化具有方法论启示。展开更多
文摘为优化变压器选型与成本控制,首先,采用全生命周期成本(life cycle cost,LCC)理论和逼近理想解排序(technique for order preference by similarity to an ideal solution,TOPSIS)法,基于多项变电站工程变压器数据,探究变压器LCC构成及电压等级、接线方式、冷却方式等7项影响因素,对影响因素进行加权评估,并计算变压器LCC的各分项成本;其次,通过控制变量法量化电压等级等4项关键因素对变压器LCC的影响,探究关键因素对变压器成本机制的耦合效应,确定35 kV、220 kV及330 kV变压器LCC最低方案。结果显示,电压等级显著影响变压器LCC,接线方式与冷却方式对其的影响也较大;各分项成本在LCC中的占比保持相对稳定;单因素影响下,电压等级越高,变压器LCC越高,而是否为智能变压器对短期成本影响较小,长期来看智能变压器更具经济性。
文摘产业开发区内多发环境污染导致的邻避(not in my backyard,NIMBY)问题对经济发展和社会稳定造成了一定的阻碍,其中工业企业是主要的邻避设施,目前对该类邻避效应的研究及对邻避效应大小的定量评价方法尚不完善。文章以合肥市高新区为例,以区域内的工业企业为研究对象,提出新的邻避效应评价方法。在评价体系中,将企业规划布局的合理性和大气防护距离也作为邻避效应评价指标,采用模糊最优最劣决策法(best-worst method,BWM)计算指标权重,并通过逼近理想解对不同工业企业的邻避效应大小进行排序。研究结果表明,风险感知和大气防护距离是影响邻避效应的最主要因素,通过敏感性分析确定该评价方法有较好的可靠性和鲁棒性,为决策者解决产业开发区的邻避问题提供思路和依据。
基金Supported by National Nat ural Science Foundation of China(Grant Nos.51675227,51975249)Jilin Province Science and Technology Development Funds(Grant Nos.20180201007GX,20190302017GX)+2 种基金Technology Development and Research of Jilin Province(Grant No.2019C037-01)Changchun Science and Technology Planning Project(Grant No.19SS011)National Science and technology Major Project(Grant No.2014ZX04015031).
文摘Heavy-duty machine tools are composed of many subsystems with different functions,and their reliability is governed by the reliabilities of these subsystems.It is important to rank the weaknesses of subsystems and identify the weakest subsystem to optimize products and improve their reliabilities.However,traditional ranking methods based on failure mode effect and critical analysis(FMECA)does not consider the complex maintenance of products.Herein,a weakness ranking method for the subsystems of heavy-duty machine tools is proposed based on generalized FMECA information.In this method,eight reliability indexes,including maintainability and maintenance cost,are considered in the generalized FMECA information.Subsequently,the cognition best worst method is used to calculate the weight of each screened index,and the weaknesses of the subsystems are ranked using a technique for order preference by similarity to an ideal solution.Finally,based on the failure data collected from certain domestic heavy-duty horizontal lathes,the weakness ranking result of the subsystems is obtained to verify the effectiveness of the proposed method.An improved weakness ranking method that can comprehensively analyze and identify weak subsystems is proposed herein for designing and improving the reliability of complex electromechanical products.
文摘为提升陶瓷产品在文化叙事维度的表达效能。本研究基于叙事设计理论,整合出意象、行为和意境的三文化要素库,结合采用层次分析法(Analytic Hierarchy Process,AHP)确定造型功能、文化表达及情感感知等规范层权重,与逼近理想解排序法(Technique for Order Preference by Similarity to Ideal Solution,TOPSIS)对多组叙事文本方案进行量化评估。以山西八义窑红绿彩瓷为研究对象,通过权重分析与方案排序,最终筛选出“莲花+象征+雅趣”为最优叙事主题。通过探讨“莲华智韵”智能灯具的设计策略,验证了理论运用的可行性,证实叙事设计方案能有效增强文化认同感。为传统工艺的现代表达提供了可量化的解决方案,推动传统陶瓷设计从功能载体向文化媒介的范式转型,对文化遗产的现代转化具有方法论启示。
