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Controller design of uncertain nonlinear systems based on T-S fuzzy model

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控制理论与应用（英文版） 2009年第2期7卷 139-143页

作者： Songtao ZHANG shizhen bai School of Management Harbin University of Commerce Harbin Heilongjiang 150076 China

A robust control for uncertain nonlinear systems based on T-S fuzzy model is discussed in this paper. First, a T-S fuzzy system is adopted to model the uncertain nonlinear systems. Then, for the system with input variables adopting standard fuzzy partitions, the efficient maximal overlapped-rules group （EMORG） is presented, and a new sufficient condition to check the stability of T-S fuzzy system with uncertainty is derived, which is expressed in terms of Linear Matrix Inequalities. The derived stability condition, which only requires a local common positive definite matrix in each EMORG, can reduce the conservatism and difficulty in existing stability conditions. Finally, a simulation example shows the proposed approach is effective.

关键词： Controller design Uncertain nonlinear systems T-S fuzzy model

Incentives for the Quality and Safety Traceability System of Agricultural Products

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Asian Agricultural Research 2014年第2期6卷 44-46,48页

作者： shizhen bai Meng LI School of Management Harbin University of Commerce

The quality and safety traceability system of agricultural products is an important measure to protect the quality and safety of agricultural products. Farmers and food enterprises are main operators of the traceability system. If they are effectively encouraged to practice traceability system,food safety can be guaranteed from the source. This paper studies the incentive problem of agricultural product traceability system from two aspects- vertical contract coordination and government external incentive.

关键词： Agricultural products Traceability system Incentiv

Evaluating R&D efficiency of China's listed lithium battery enterprises

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Frontiers of Engineering Management 2022年第3期9卷 473-485页

作者： shizhen bai Xinrui BI Chunjia HAN Qijun ZHOU Wen-Long SHANG Mu YANG Lin WANG Petros IEROMONACHOU Hao HE School of Management Harbin University of CommerceHarbin 150028China Department of Management BirkbeckUniversity of LondonLondon WC1E 7HXUK Department of Systems Management and Strategy University of GreenwichLondon SE109LSUK Beijing Key Laboratory of Traffic Engineering College of Metropolitan TransportationBeijing University of TechnologyBeijing 100124China School of Traffic and Transportation Beijing Jiaotong UniversityBeijing 100008China Centre for Transport Studies Imperial College LondonLondon SW72AZUK School of Business Administration Chongqing Technology and Business UniversityChongqing 400067China

Promoting the growth of the lithium battery sector has been a critical aspect of China's energy policy in terms of achieving carbon ***,despite significant support on research and development(R&D)investments that have resulted in increasing size,the sector seems to be falling behind in technological *** guide future policies and understand proper ways of promoting R&D efficiency,we looked into the lithium battery industry of ***,data envelopment analysis(DEA)was used as the primary approach based on evidence from 22 listed lithium battery *** performance of the five leading players was compared with that of the industry as a *** revealed little indication of a meaningful improvement in R&D efficiency throughout our sample from 2010 to ***,during this period,a significant increase in R&D expenditure was *** finding was supported,as the results showed that the average technical efficiency of the 22 enterprises was 0.442,whereas the average pure technical efficiency was at 0.503,thus suggesting that they were suffering from decreasing returns to scale(DRS).In contrast,the performance of the five leading players seemed superior because their average efficiency scores were higher than the industry's ***,they were experiencing increasing scale efficiency(IRS).We draw on these findings to suggest to policymakers that supporting technologically intensive sectors should be more than simply increasing investment scale;rather,it should also encompass assisting businesses in developing efficient managerial processes for R&D.

关键词： Data Envelopment Analysis R&D investment efficiency China's listed lithium battery enterprises technical efficiency pure technical efficiency scale efficiency

Emergence as a process of resources flowing in supply chain system

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Journal of Southeast University(English Edition) 2007年第2期23卷 302-308页

作者：白世贞郑小京东南大学经济管理学院南京210096 哈尔滨商业大学物流学院哈尔滨150076

To accurately describe the resource values that agents possess in the complex supply chain system which is a result of the interaction among the agents and to make correct decisions regarding quantity, time and place of the resources, the characteristics of the resource values in the supply chain are analyzed. ＂Chromosome＂ is used to express a resource value in the supply chain, and eight random numbers are used to integrate the resources. The if-then rules and correlation chance constrained programming in the resource supply-distribution model are set up and they are used in a three-tiered-echo model which can describe the kinds of interactive behavior of the agents in the supply chain system. Simulation is done in the platform of Swarm with a genetic algorithm. The results show that the resources in the supply chain complex adaptive system are an organic whole that cannot be separated. The three-tiered-echo model can accurately describe the interaction of resource flows of agents in the supply chain system. The system can attain optimization by utilizing the resources in the supply chain if the agents in the system cooperate, compete and distribute resources according to this model.

关键词： resources flow agent simulation

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基于自组织的绿色供应链协同发育机理研究

科技管理研究 2014年第19期34卷 235-240页

作者：刘刊白世贞哈尔滨商业大学管理学院黑龙江哈尔滨150028

通过识别绿色供应链发育的协同机制,构建绿色供应链发育的概念模型,深入分析绿色供应链自组织发育的机制,从系统建模的角度揭示在绿色供应链发育过程起到控制参量作用的主要参数,对绿色供应链可持续发育、成熟具有重要理论意义。研究表... 详细信息

通过识别绿色供应链发育的协同机制,构建绿色供应链发育的概念模型,深入分析绿色供应链自组织发育的机制,从系统建模的角度揭示在绿色供应链发育过程起到控制参量作用的主要参数,对绿色供应链可持续发育、成熟具有重要理论意义。研究表明,实现绿色供应链自组织发育的主要手段是加强绿色供应链主体间的协同作用,加强主要环节的绿色化政策支持,加强主导企业的绿色化意识。

关键词：绿色供应链自组织政府引导发育协同

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基于存货质押融资的质押率决策研究

系统工程学报 2013年第5期28卷 617-624页

作者：白世贞徐娜哈尔滨商业大学管理学院黑龙江哈尔滨150028

针对存货质押融资业务中的质押率决策问题,构建市场需求不确定环境下的物流金融机构利润模型,并引入下侧风险控制模式获得最优质押率表达式.最后,通过仿真验证了质押率和利润受市场需求变动情况、融资企业违约率以及物流金融机构预设损... 详细信息

针对存货质押融资业务中的质押率决策问题,构建市场需求不确定环境下的物流金融机构利润模型,并引入下侧风险控制模式获得最优质押率表达式.最后,通过仿真验证了质押率和利润受市场需求变动情况、融资企业违约率以及物流金融机构预设损失率的影响,为存货质押融资业务的开展提供理论依据.

关键词：存货质押融资质押率物流金融机构

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我国中小企业成本、市场和制度障碍实证研究

中国软科学 2023年第2期 146-156页

作者：白世贞郑敏魏胜哈尔滨商业大学管理学院黑龙江哈尔滨150028

后疫情时代,中小企业只有通过创新实现经济全面复苏,才能保障就业。基于创新调查数据,探究各种阻碍创新的障碍和影响创新投资的因素。研究发现,成本、市场和制度障碍是阻碍创新的重要因素,但是只有市场障碍是影响企业创新投入的显性因... 详细信息

后疫情时代,中小企业只有通过创新实现经济全面复苏,才能保障就业。基于创新调查数据,探究各种阻碍创新的障碍和影响创新投资的因素。研究发现,成本、市场和制度障碍是阻碍创新的重要因素,但是只有市场障碍是影响企业创新投入的显性因素。相较而言,知识障碍并没有阻止企业创新,而是阻碍创新投入的重要因素。将中小企业与大公司进行对比研究发现,中小企业受到的影响更大,尤其是成本因素。研究结论意味着,可以通过扩大政策工具的范围,鼓励企业参与创新。

关键词：中小企业成本市场制度创新障碍

供应链金融对中小农业企业的融资约束缓解效应

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西北农林科技大学学报（社会科学版） 2021年第2期21卷 140-151页

作者：付玮琼白世贞哈尔滨商业大学工商管理博士后流动站哈尔滨150028 惠州学院经济管理学院广东惠州516000

中小农业企业为促进我国农业产业化做出了巨大贡献。但由于农业天然弱质性且生产周期长,生产规模小、财务规范性差及抵押资产不足等原因导致中小农业企业具有较高的融资约束。农业供应链金融可以弥补中小农业企业的信用缺失,降低银企的... 详细信息

中小农业企业为促进我国农业产业化做出了巨大贡献。但由于农业天然弱质性且生产周期长,生产规模小、财务规范性差及抵押资产不足等原因导致中小农业企业具有较高的融资约束。农业供应链金融可以弥补中小农业企业的信用缺失,降低银企的信息不对称,从而缓解其面临的融资困境。在对中小农业企业融资约束的影响因素及缓解效应进行理论分析的基础上,以2012-2018年A股中小企业板和创业板中涉农中小企业数据为研究对象构建回归模型并实证分析。研究发现:中小农业企业融资约束受信息不对称程度和信用风险因素的影响,供应链金融能显著缓解中小农业企业的融资约束,并通过降低企业间信息不对称程度和信用风险来增强这种缓解效应。

关键词：供应链金融融资约束中小农业企业信息不对称信用风险

长周期地震动强度指标与SDOF体系残余变形相关性分析

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世界地震工程 2018年第1期34卷 105-112页

作者：王世振白国良成羽西安建筑科技大学土木工程学院陕西西安710055

为分析两类长周期地震动作用下如何选取合理的强度指标作为结构抗震设计的输入,从2011年东日本9.0级地震、2003年十胜冲8.0级地震和2016年熊本7.3级地震数据库中选取90条可靠的远场长周期地震动。从1994年美国北岭6.7级地震和1999年台... 详细信息

为分析两类长周期地震动作用下如何选取合理的强度指标作为结构抗震设计的输入,从2011年东日本9.0级地震、2003年十胜冲8.0级地震和2016年熊本7.3级地震数据库中选取90条可靠的远场长周期地震动。从1994年美国北岭6.7级地震和1999年台湾集集7.6级地震数据库中选取60条近场长周期地震动,以SDOF体系为研究对象,讨论了阻尼比、屈服刚度折减系数和强度折减系数对残余变形与18个地震动强度指标的相关系数的影响,对比分析了两类长周期地震作用下相关系数之间的异同。研究结果表明:在考虑近场长周期地震动作用时,建议应根据结构周期的大小来选择合适的强度指标作为地震动的输入。远场长周期地震动作用下,以PGA、PGV和PGD为代表的强度指标与残余变形的相关程度均较高,PGV稳定性略好于PGA和PGD,建议PGV作为地震动输入的控制指标。残余变形相关系数受阻尼比、屈服刚度折减系数以及强度折减系数影响不大。

关键词：长周期地震动残余变形强度指标相关系数