检索结果-内蒙古大学图书馆

Optimisation of the regional energy supply network: a multi-objective analysis in the province of Florence (Italy)

INTERNATIONAL JOURNAL OF SUSTAINABLE ENERGY 2014年第6期33卷 1076-1089页

作者： Bernetti, I. Sacchelli, S. Sottini, V. Alampi Marinelli, N. Marone, E. Menghini, S. Univ Florence GESAAF Dipartimento Gestione Sistemi Agrari Alime 18 Ple Cascine I-50144 Florence Italy

This work presents an integrated method for the optimisation of a regional wood-energy supply network. The model is based on a scalar system that comprises a demand point (district heating plants (DHP)) and bio-energy sources (supply basin (SB)), each of which is related to a biomass terminal. The objective of optimisation is based on both technical-logistics and environmental parameters. An SB is defined by the anisotropic weighted Voronoi tessellation methodology. The parameters are then aggregated to a multiobjective analysis that includes the optimisation of variables and compromise programming approach. Results permit the identification of the best supply chain organisation and the determination of the agroforest energy districts where rural policy and intervention could be applied. The model was tested in the province of Florence (central Italy) to depict efficient scenarios for the fuelling of DHPs.

关键词： biomass logistic Voronoi tessellation multi-objective programming agro-forestry districts

来源：评论

学校读者我要写书评

暂无评论

A GIS-based agricultural land-use allocation model coupling increase and decrease in land demand

引用

AGRICULTURAL SYSTEMS 2014年 130卷 116-125页

作者： Pilehforooshha, Parastoo Karimi, Mohammad Taleai, Mohammad KN Toosi Univ Technol Dept Geospatial Informat Syst Tehran Iran KN Toosi Univ Technol Fac Geodesy & Geomat Dept GIS Tehran Iran

Agricultural land use allocation involves assessment of land potential as well as land demand for various crops to identify the optimum land unit for each type. Current allocation models often focus on the perspective of increase in land demand. However, processes causing loss of arable land should be considered to correct the demand used in conventional allocation processes. In order to achieve that, a two stage model for crop allocation is presented which uses different models such as cellular automata, Markov chain, fuzzy rule-based system, goal programming and GIS raster analysis in a logical framework. In the presented model, at first by considering environmental (soil erosion and soil salinity) and economic (urban expansion) factors leading to arable land loss, agricultural use of each land unit is allocated. Next, crop types within the agricultural area are determined based on land suitability evaluation and demand assessment for each crop. This model is developed for rural land use planning on a regional scale and is applied to the Borkhar and Meymeh district in Isfahan province in Iran to predict land use map of 2015. The overall accuracy of 0.609 in the first step allowed us to draw conclusion that the inclusion of factors resulting farmland decline in allocation process gives more accurate results than the former allocation techniques which merely model factors causing increase in agricultural land areas. Moreover, according to the results for 2015, 27.82%, 21.64%, 7.27%, 5.85%, 7.36%, 6.36% and 1.74% of agricultural areas is allocated to wheat, wheat-maize, barley, barley-maize, maize, alfalfa and potato, respectively. The presented approach has advantageous to determine the crops with highest suitability for a given area according to the desired objectives. (C) 2014 Elsevier Ltd. All rights reserved.

关键词： Crop allocation Land suitability Land demand Farmland decline multi-objective programming GIS

来源：评论

学校读者我要写书评

暂无评论

Study on A Dynamic Traffic Route Choice Model with Travel Time Reliability Constrains of Intelligent Transportation Systems 5

Study on A Dynamic Traffic Route Choice Model with Travel Ti...

引用

5th IEEE International Conference on Software Engineering and Service Science (ICSESS)

作者： Sun, Xiaomei Changchun Vocat Inst Technol Sch Engn Technol Changchun Jilin Province Peoples R China

ISBN: (纸本)9781479932795

For Intelligent Transportation Systems(ITS), dynamic traffic route choice is one of the most important technologies. Practical applications have shown that static route choice models can not meet passengers' travel demands, because route choice is a typical multi-objective programming problem affected by many dynamic factors, such as real-time traffic state, link travel time, traffic incident, intersection delay and so on. In this paper, I proposed a multi-objective dynamic route choice function with the minimum of link travel time and distance as the target, which travelers paid most attention to when they chose the route. Also I got travel time reliability as the model constraint to against the complexity and indetermination of traffic flow. And I obtained the link travel time by short-term forecasting based on measured traffic data of the network. Finally, in order to test its reliability, I established a simulation road network for real-time traffic data, and solved the model I put forward by improved genetic algorithm. Fortunately, I obtained an exciting result.

关键词： Route choice model travel time reliability improved genetic algorithm multi-objective programming

来源：评论

学校读者我要写书评

暂无评论

multi-objective hedging model with the third central moment and the capital budget

引用

ECONOMIC MODELLING 2014年 36卷 213-219页

作者： Fu, Junhui Zhejiang Univ Finance & Econ Sch Finance Hangzhou 310018 Zhejiang Peoples R China

The third central moment and the capital budget are two important factors in designing the optimal hedge strategy. This paper investigates the problem of futures hedging under the third central moment and the capital budget. Based on the multi-objective programming, a multi-objective hedging model with two important factors is proposed to manage this problem. Using the method of weighted sums, the multi-objective hedging model can be equivalently transformed into an ordinary single-objective programming. By solving the single-objective programming, we derive the optimal hedge ratio under the third central moment and the capital budget. Finally, an empirical example of hedging copper is given to illustrate the application of the proposed model. The results also show clearly the influence of the third central moment and the capital budget in the hedging decision. (C) 2013 Elsevier B.V. All rights reserved.

关键词： Futures hedging The third central moment Capital budget multi-objective programming

来源：评论

学校读者我要写书评

暂无评论

The Study of Intelligent Control in the Process of Overtaking

The Study of Intelligent Control in the Process of Overtakin...

引用

International Conference on Mechatronics Engineering and Computing Technology (ICMECT)

作者： Cai Xiang Chen Wuji Song Meiyang Zhang Suiyuan Wuhan Univ Technol Wuhan Peoples R China

ISBN: (纸本)9783038351153

In this paper, we have studied the overtaking process on the two-way four-lane highway in China by using the theory of multi-objective programming, establish a traffic volume model and evaluate the safety of overtaking. In order to working out the optimal offset angle, we also establish the function equation between safety coefficient, traffic flow and the offset angle during overtaking or lane-changes. Finally some safer and smarter overtaking rules are put forward by combining the offset angle and the security constraints, thus improving the safety, intelligence and traffic flow.

关键词： multi-objective programming safety coefficient traffic flow Intelligent transportation

来源：评论

学校读者我要写书评

暂无评论

An environmentally conscious robust closed-loop supply chain design

引用

Journal of Business Economics 2014年第5期84卷 613-637页

作者： Altmann, Michael Bogaschewsky, Ronald Chair of Business Management and Industrial Management University of Würzburg Sanderring 2 Würzburg 97070 Germany

Strategic network planning activities of national and even more of multinational companies are recently influenced by an increasing number of laws and regulations regarding environmental issues. On top of that non-governmental bodies pose additional pressures on companies to comply with environmental as well as social standards. Therefore, this paper presents a multi-objective and robust optimization-based closed-loop supply chain design model. In the objective function both expected total costs as well as carbon dioxide equivalents (CO₂e) are to be minimized. Customer demands and used-product return ratio are considered to be uncertain. The model supports the decision makers to better understand the influence of parameters and their values as well as the interrelationship between these when deciding on the structure of the entire value chain. © 2014, Springer-Verlag Berlin Heidelberg.

关键词： multi-objective programming Robust optimization Supply chain design Sustainability Uncertainty

来源：评论

学校读者我要写书评

暂无评论

Optimization of Integrated Risk in Commercial Banking Based on Financial Statements

Optimization of Integrated Risk in Commercial Banking Based ...

引用

2nd International Conference on Information Technology and Quantitative Management (ITQM)

作者： Bao, Chunbing Li, Jianping Wu, Dengsheng Zhu, Xiaoqian Liang, Changzhi Liu, Chang Chinese Acad Sci Inst Policy & Management Beijing 100190 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China

Integrated risk control and asset optimization is an important issue in commercial bank industry. This paper combines balance sheet with income statement, and forms a structure measuring each asset's risk based on the method using income statement only, having a better use of the data resource. Considering the commercial bank's diversified pursuit of low risk and high profit, we solve the problem using the method of multiple objective programming, and we give the Pareto surface to support selection decisions. The analysis framework of the integrated risk optimization based on financial statements provides a feasible idea for commercial banks' asset optimization research with limited data resource. (C) 2014 The Authors. Published by Elsevier B.V. Open access under CC BY-NC-ND license.

关键词： commercial banks integrated risk financial statements multi-objective programming asset optimization

来源：评论

学校读者我要写书评

暂无评论

Design of the multi-level Inventory Control Model and Solution algorithm for the Spare Parts

Design of the Multi-level Inventory Control Model and Soluti...

引用

International Conference on Information Science and Cloud Computing Companion (ISCC-C)

作者： Cao, Yu Wang, Tiening Xu, Shengliang Zhu, Yu Acad Armored Force Engn Dept Tech Support Engn Beijing 100000 Peoples R China

ISBN: (纸本)9781479952458

The inventory control model based on the multi-objective programming of the spare parts is set up. The algorithm of particle swarm optimization (PSO) is designed and improved to solve the inventory control multi-objective programming model. Aiming at the question of the particle that deviates from the solution space and the prematurity problem in the searching course, the regain mechanism and interference mechanism are built up to improve the classical PSO, and the switching mechanism from the Cartesian space to the discrete space of inventory control model is established, and then the optimized solution algorithm based on the improved PSO is presented. At last, the simulation experiments of inventory control are made to validate the multi-objective programming model. It lays the foundation for design and realization of simulation and optimization of inventory control of the spare parts.

关键词： inventory control the spare part multi-objective programming Particle Swarm Optimization

来源：评论

学校读者我要写书评

暂无评论

Minimizing adverse environmental effects of agriculture: A multi-objective programming approach

引用

Operational Research 2009年第3期9卷 267-280页

作者： Ragkos, Athanasios Psychoudakis, Asimakis Department of Agricultural Economics Faculty of Agriculture Aristotle University of Thessaloniki 54 004 Thessaloniki P.O. Box 232 Greece

The mitigation of adverse effects of agriculture on ecosystems, due to the use of agrochemicals and irrigation water, is expected to have implications on farm incomes. This study examines the possibilities of simultaneously achieving environmental goals such as the reduction of agrochemical and irrigation water use as well as acceptable farm incomes. The empirical analysis employs the multi-objective programming method in order to define alternative crop plans for River Strymonas region in Greece. The results reveal considerable possibilities for reducing input use as well as severe impact on incomes in terms of gross margin, which indicate a wide range of policy options. It is argued that the choice of the ideal solution should be based on several criteria including non-market values of environmental benefits, the particular objectives of policy makers and human preferences, especially the acceptance of each crop plan by stakeholders. © Springer-Verlag 2009.

关键词： Agrochemical use Irrigation multi-objective programming Water resources

来源：评论

学校读者我要写书评

暂无评论

Optimization of a linear function over the set of stochastic efficient solutions

引用

COMPUTATIONAL MANAGEMENT SCIENCE 2014年第1-2期11卷 157-178页

作者： Djamal, Chaabane Fatma, Mebrek USTHB Fac Math Operat Res Dept Bp 32 El AliaBEZ Algiers 16121 Algeria

In this paper we study the problem of optimization over an integer efficient set of a multiple objective Integer Linear Stochastic programming problem. Once the problem is converted into a deterministic one by adapting the 2-levels recourse approach, a new pivoting technique is applied to generate an optimal efficient solution without having to enumerate all of them. This method combines both techniques, the L-shaped method and the combined method developed in Chaabane and Pirlot (J Ind Manag Optim 6:811-823, 2010). A detailed didactic example is given to illustrate different steps of our algorithm.

关键词： multi-objective programming Stochastic programming 2-levels recourse model Efficient solutions

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：