检索结果-内蒙古大学图书馆

Multicriteria analysis for agricultural resource management: A critical survey and future perspectives

EUROPEAN JOURNAL OF OPERATIONAL RESEARCH 2000年第2期122卷 486-500页

作者： Hayashi, K Minist Agr Forestry & Fisheries Tohoku Natl Agr Expt Stn Morioka Iwate 0200198 Japan

This paper reviews multicriteria analysis applied to agricultural resource management. The applications utilize either methods for selecting multiattribute discrete alternatives (including multiattribute utility theory) or methods for solving multiobjective planning problems (including goal programming). Our main purpose is to classify and evaluate the criteria (attributes, objectives) used for modeling agricultural systems and to identify the difficulties for practitioners in applying the methodology. The fields of study in agricultural decisions requiring further investigation are also discussed. (C) 2000 Elsevier Science B.V. All rights reserved.

关键词： multicriteria analysis agriculture natural resource multiattribute value functions multiobjective programming

来源：评论

学校读者我要写书评

暂无评论

Fuzzy approach to multilevel knapsack problems

引用

COMPUTERS & MATHEMATICS WITH APPLICATIONS 2005年第7-8期49卷 1157-1176页

作者： Shih, HS Tamkang Univ Grad Inst Management Sci Taipei 251 Taiwan

This study proposes a fuzzy approach for solving the multiobjective and multilevel knapsack problems (KPs). The problem was first formulated as a multilevel programming problem with multiple decision makers (DMs). Then the degree of satisfaction of each DM was established and represented by their individual membership functions. The recursive formulation of dynamic programming was used to solve the decisions of the interrelated stages. The overall satisfaction of the decision was obtained through this stage-wise operation on the hierarchical structure. Capacity allocation was developed and a step-by-step solution procedure was illustrated. A detailed comparison between multiobjective and multilevel KPs was also carried out. Finally, the possible use of turnpike theorem in KPs was scrutinized in the fuzzy domain. (c) 2005 Elsevier Ltd. All rights reserved.

关键词： Knapsack problem multilevel programming multiobjective programming dynamic programming resource allocation Turnpike theorem

来源：评论

学校读者我要写书评

暂无评论

Sensitivity Analysis in Differential programming through the Clarke Derivative

引用

MEDITERRANEAN JOURNAL OF MATHEMATICS 2012年第3期9卷 537-550页

作者： Jimenez Guerra, Pedro Melguizo Padial, Miguel Angel UNED Dept Matemat Fundamentales Fac Ciencias Madrid 28040 Spain Univ Alicante Dept Matemat Aplicada Alicante 03690 Spain

In this paper we deal with the sensitivity analysis in multiobjective differential programs with equality constraints. More specifically, we focused on analyzing the quantitative behavior of a certain set (non necessarily singleton) of optima according to changes of the right-hand side parameters. We prove that the sensitivity of the program is measured by a Lagrange multiplier plus a projection of its derivative. The sensitivity analysis is accomplished by utilizing the Clarke derivative, which transmits its characteristic stability to the obtained result.

关键词： Differential programming multiobjective programming set-valued map tangential regularity Clarke derivative

来源：评论

学校读者我要写书评

暂无评论

Improving the computational efficiency in a global formulation (GLIDE) for interactive multiobjective optimization

引用

ANNALS OF OPERATIONS RESEARCH 2012年第1期197卷 47-70页

作者： Ruiz, Francisco Luque, Mariano Miettinen, Kaisa Univ Jyvaskyla Dept Math Informat Technol Jyvaskyla 40014 Finland Univ Malaga E-29071 Malaga Spain

In this paper, we present a new general formulation for multiobjective optimization that can accommodate several interactive methods of different types (regarding various types of preference information required from the decision maker). This formulation provides a comfortable implementation framework for a general interactive system and allows the decision maker to conveniently apply several interactive methods in one solution process. In other words, the decision maker can at each iteration of the solution process choose how to give preference information to direct the interactive solution process, and the formulation enables changing the type of preferences, that is, the method used, whenever desired. The first general formulation, GLIDE, included eight interactive methods utilizing four types of preferences. Here we present an improved version where we pay special attention to the computational efficiency (especially significant for large and complex problems), by eliminating some constraints and parameters of the original formulation. To be more specific, we propose two new formulations, depending on whether the multiobjective optimization problem to be considered is differentiable or not. Some computational tests are reported showing improvements in all cases. The generality of the new improved formulations is supported by the fact that they can accommodate six interactive methods more, that is, a total of fourteen interactive methods, just by adjusting parameter values.

关键词： multiobjective programming Multiple objectives Interactive methods Reference point methods Classification Marginal rates of substitution Global system Pareto optimality

来源：评论

学校读者我要写书评

暂无评论

A multiobjective interactive approach to determine the optimal electricity mix in Andalucia (Spain)

引用

TOP 2014年第1期22卷 109-127页

作者： Cabello, J. M. Luque, M. Miguel, F. Ruiz, A. B. Ruiz, F. Univ Malaga E-29071 Malaga Spain

It seems clear that energy production is one of the key aspects of global sustainability. Economic, social and environmental aspects must be taken into account in order to design appropriate policies and thus, multicriteria analysis becomes a very adequate tool to deal with real problems of this kind. This study was directed by the Regional Ministry of Environment of Andalucia, who wanted to know the impact on the cost and on the environmental damage of a potential mix, more focused on renewable sources. Some authorities of the Ministry acted as decision maker in the interactive process. As a result, we have built a linear multiobjective model, in order to determine the optimal electrical mix for the Spanish region of Andalucia. Namely, we determine how much electricity power should be installed and produced, by each of the eight generation systems considered (lignite, other coals, oil, natural gas, nuclear, photovoltaic, wind and mini-hydro). Apart from the economic criterion (yearly cost), we have considered the vulnerability (in terms of percentage of imported fuel) as a strategic criterion, and 12 environmental criteria, which have been derived using the Life Cycle Analysis method on the different production systems. The interactive system PROMOIN was used to solve the multiobjective problem. PROMOIN allows the decision maker to choose how to give preference information to the system, and enables changing it anytime during the solution process, which gives more flexibility to the decision maker and increases the confidence of the decision maker in the final solution.

关键词： Electricity supply Renewable energy Sustainable development multiobjective programming Interactive methods

来源：评论

学校读者我要写书评

暂无评论

COAL BLENDING OPTIMIZATION UNDER UNCERTAINTY

引用

EUROPEAN JOURNAL OF OPERATIONAL RESEARCH 1995年第3期83卷 452-465页

作者： SHIH, JS FREY, HC N CAROLINA STATE UNIV DEPT CIVIL ENGNRALEIGHNC 27695

Coal blending is one of several options available for reducing sulfur emissions from coal-fired power plants. However, decisions about coal blending must deal with uncertainty and variability in coal properties, and with the effect of off-design coal characteristics on power plant performance and cost. To deal with these issues, a multi-objective chance-constrained optimization model is developed for an illustrative coal blending problem. Sulfur content, ash content and heating value are treated as normally distributed random variables. The objectives of the model include minimizing the: 1) expected (mean) costs of coal blending;2) standard deviation of coal blending costs;3) expected sulfur emissions;and 4) standard deviation in sulfur emissions. The cost objective function includes coal purchasing cost, ash disposal cost, sulfur removal cost, and fuel switching costs. Chance constraints include several risk measures, such as the probability of exceeding the sulfur emission standard. Several results are presented to illustrate the model.

关键词： ENERGY ENVIRONMENT PROBABILISTIC programming multiobjective programming

来源：评论

学校读者我要写书评

暂无评论

A multi-objective programming approach to develop an ergonomic job rotation in a manufacturing system

引用

IFAC-PapersOnLine 2018年第11期51卷 850-855页

作者： Moussavi, S.E. Mahdjoub, M. Grunder, O. Nanomedicine lab Univ. Bourgogne Franche-Comté UTBM BelfortF-90010 France ELLIADD Lab Univ. Bourgogne Franche-Comté UTBM Montbéliard25200 France

A worker assignment job rotation problem with the heterogeneous workers and the jobs with different workload level is presented in this paper. Both productivity and ergonomic criteria are considered in the problem and a multi-objective mixed-integer mathematical model is proposed to implement an ergonomic job rotation in a production system. The main objective of the model is to balance the daily workload that the workers are exposed together with reducing the production cycle time in the studied system. The proposed mathematical model is applied to a part of a truck assembly line. The model is programmed by GMPL mathematical modeling language and is solved by employing Gurobi solver. The computational results show the capability of the proposed model to optimize both objectives of the job rotation. © 2018

关键词： Rotation Ergonomics Manufacture Modeling languages multiobjective optimization Computational results Mixed integer Multi objective multiobjective programming Production cycle Production system Truck assembly Worker assignments

来源：评论

学校读者我要写书评

暂无评论

Effects of asymmetric loading on lateral spinal curvature in young adults with scoliosis: A preliminary study

引用

PROSTHETICS AND ORTHOTICS INTERNATIONAL 2018年第5期42卷 554-562页

作者： Li, Simon S. W. Chow, Daniel H. K. Hong Kong Polytech Univ Hong Kong Hong Kong Peoples R China Educ Univ Hong Kong 10 Lo Ping Rd Tai Po Hong Kong Peoples R China

Background: Usual guidelines recommend symmetric load carriage over asymmetric load carriage. Whether this recommendation is valid for subjects with asymmetric body alignment, such as those with scoliosis, remains unclear. Scoliosis is both a subject-dependent and time-variant condition. Interventions are generally employed to prevent the abnormal spinal curvature from progressing. Objectives: To investigate the effects of an asymmetric load carriage on lateral spinal deformity in participant with scoliosis. Study design: Repeated measure and single-case experimental designs Methods: Photogrammetry was employed to measure the scoliotic curvature changes in thoracic and lumbar regions without a load (0%) and with a single-strap cross-chest bag loaded at 2.5%, 5%, 7.5%, 10% and 12.5% of body weight. Statistical tests and programming models were adopted to determine the loading conditions (placement and weight of the bag) with optimal and minimal corrections of the affected and unaffected scoliotic spinal regions, respectively. Results: Significant short-term postural correction of scoliosis was achieved through applying an asymmetric load on the ipsilateral shoulder relative to the apex location of the major scoliotic curve. Conclusion: A subject-specific optimal loading configuration was determined using a programming model. The results suggest that the application of a properly controlled asymmetric load carriage might be possible for reducing scoliotic spinal curvature. Further study of the long-term effects of subject-specific optimal asymmetric load carriage on scoliotic spinal curvatures is warranted. Clinical relevance Short-term reduction of scoliotic spinal curvatures under asymmetric load carriage was demonstrated. Thoracic curvatures could be reduced when asymmetric loading was applied on the ipsilateral shoulder relative to the scoliotic apex. multiobjective programming was applied to determine the optimal weight of asymmetric load for participant with sco

关键词： Scoliosis biomechanics asymmetric load carriage multiobjective programming

来源：评论

学校读者我要写书评

暂无评论

Duality for nondifferentiable multiobjective higher-order symmetric programs over cones involving generalized (F, α, ρ, d)-convexity

引用

JOURNAL OF INEQUALITIES AND APPLICATIONS 2012年第1期2012卷 1-16页

作者： Gupta, S. K. Kailey, N. Kumar, Sumit Indian Inst Technol Dept Math Patna 800013 Bihar India Gulzar Inst Engn & Technol Dept Appl Sci Khanna 141401 India Indian Inst Management Udaipur 313001 India

In this paper, a pair of Wolfe type higher-order symmetric nondifferentiable multiobjective programs over arbitrary cones is formulated and appropriate duality relations are then established under higher-order-K-(F, alpha, rho, d)-convexity assumptions. A numerical example which is higher-order K-(F, alpha, rho, d)-convex but not higher-order K-F-convex has also been illustrated. Special cases are also discussed to show that this paper extends some of the known works that have appeared in the literature. MSC: 90C29;90C30;49N15

关键词： higher-order symmetric duality support function multiobjective programming cones efficient solutions

来源：评论

学校读者我要写书评

暂无评论

TRADE-OFF ANALYSIS USING PARAMETRIC OPTIMIZATION TECHNIQUES

引用

EUROPEAN JOURNAL OF OPERATIONAL RESEARCH 1992年第1期60卷 87-98页

作者： NAKAYAMA, H KONAN UNIV DEPT APPL MATH8-9-1 OKAMOTOHIGASHINADAKOBE 658JAPAN

In multi-objective programming problems, one of the most difficult tasks is 'balancing among multiple objectives', i.e. 'trade-off'. This difficulty originates from the value judgment of decision makers. During the past decade, several methods have been developed to overcome this difficulty in multiobjective programming problems. Among them, from a practical viewpoint, the aspiration level approach is very attractive, since it does not require any consistency of the decision maker's judgement, and it makes the trade-off (in other words, balancing) among the objectives very easy. On the other hand, some of the practical problems have very many objective functions, say, about one hundred. For this kind of problem, decision makers tend to be tired with answering their aspiration levels for all objective functions. It is very important, therefore, to decrease the burden of the decision makers in their trade-off. In this paper, a method for trade-off using parametric optimization techniques will be suggested. In linear and quadratic problems, the method can show the exact trade-off information very rapidly even in cases with very many objective functions. Therefore, it can be expected to help decision makers' judgement in their trade-offs effectively in many practical problems.

关键词： TRADE-OFF ANALYSIS PARAMETRIC OPTIMIZATION SENSITIVITY ANALYSIS multiobjective programming INTERACTIVE programming

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：