A KIND OF FUZZY MULTI-OBJECTIVE LINEAR PROGRAMMING PSOBLEMS BASED ON INTERVAL VALUED FUZZY SETS

1 IntroductionSince Tanada et al.llJ and Zinunermann[2] proposed the concept of fuzzy mathematicalprogr~ng, their framework has been, on the one hand, developed in the problem \of alinear Progralnlning type formulated as fuzZy linear progr~ by other authors. The fuZzyprogr~ng aPProach to multi-objective linear progralluning problems was aest introducedby Zinunermazm[3], whO considered multi-objective linear progralnlning with fuzzy goals, andfather developed by Leberling.I'] 1 Hannan[5], …     

Emission abatement for production system across locations with heterogeneous emission profiles

This paper investigates a production system in which the desired system state is a reduction of emissions and the controlling action plan is altering carbon price. From the operations perspective, we develop a model to study how increasing carbon emission costs may affect the joint production and location decisions for a manufacturer across different locations. Specifically, our model incorporates economies of scale and explicitly links product demand, production costs and carbon emission levels to location decisions. The firm's decisions in production batch size and locations are then optimised. The system state of emission are analysed under different carbon prices. Finally we check the alignment of objectives in costs and emissions for the system. The results show that for a production system with economies of scale, the production allocation is transformed to a location choice problem after optimising the costs. Raising the carbon price reduces the carbon emissions but may not be able to induce the production to be placed in an emission efficient place. We propose a hybrid policy combining carbon price and free emission allowance to fully align the cost efficiency and emission efficiency and characterise the link between the emission target and the carbon price.     

新型建材塑料的特性及应用

结合塑料的特性，论述了塑料管、塑料门窗、塑料地板、塑料墙纸、塑料住房、塑料屋顶、工程塑料等方面的应用前景，并给建筑行业带来经济效益和社会效益。     

城乡人口流动对技术创新扩散的影响及实证分析

针对人口流动可能会存在对技术创新扩散速度和市场最大潜力的影响，提出一种基于城乡之间流动的创新技术扩散动力学速度模型，并对该模型进行稳定分析。结果发现城乡之间是否存在人员流动、单向或双向流动，城乡人口数最终会趋向稳定．同时，该技术创新市场扩散也会达到一终值．利用中国城镇和农村的固定电话用户数的数据进行实证分析，得出不管存不存在人员流动，固定电话用户都会达到其市场最大值，但其扩散速度和市场最大值会因为人员流动而发生变化。     

带风险度的经济效果评价函数及其优化模型

在建立风险型资金运动过程的平衡方程的基础上,定义了带风险度的经济效果评价函数,并对其经济含意与数学性质进行了讨论．给出了风险型动态投资效果优化模型以及求解该模型近似值的辅助模型．     

攀西地区生态经济研究的方法和目标分析

本文运用经济学、物理学、数学、系统论等学科的观点和方法,阐明了攀西地区经济发展和生态环境的紧密联系,分析了攀西地区可持续发展的实现过程及其中的障碍,提出了一些实现可持续发展可行性的政策建议。     

The Optimum of Structure of Agriculture-land Utilization in Qingchuan County

ＴｈｅＯｐｔｉｍｕｍｏｆＳｔｒｕｃｔｕｒｅｏｆＡｇｒｉｃｕｌｔｕｒｅ－ｌａｎｄＵｔｉｌｉｚａｔｉｏｎｉｎＱｉｎｇｃｈｕａｎＣｏｕｎｔｙＬＩＵＧｕａｎｇｚｈｏｎｇ；ＨＥＣｈａｎｇｚｈｅｎｇ；ＸＵＪｉｕｐｉｎｇ（Ｄｅｐｔ．ｏｆＡｐｐｌｉｅｄＭａｔｈｅｍａ...     

The Optimization of The Ecological Economic Development for the Upper Reaches of the Yangtze River（Changjiang）

ＴｈｅＯｐｔｉｍｉｚａｔｉｏｎｏｆＴｈｅＥｃｏｌｏｇｉｃａｌＥｃｏｎｏｍｉｃＤｅｖｅｌｏｐｍｅｎｔｆｏｒｔｈｅＵｐｐｅｒＲｅａｃｈｅｓｏｆｔｈｅＹａｎｇｔｚｅ　Ｒｉｖｅｒ（Ｃｈａｎｇｊｉａｎｇ）ＬＩＵＧｕａｎｇｚｈｏｎｇ；ＸＵＪｉｕｐｉｎｇ；ＨＥＣｈ...     

Taussky不等式的一个推广

给出了实矩阵的特征值均具有非负实部的一个充分条件，并在此基础上，对Ｔａｕｓｓｋｙ不等式进行了推广。