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Issue Info: 
  • Year: 

    2015
  • Volume: 

    9
  • Issue: 

    3 (18)
  • Pages: 

    79-87
Measures: 
  • Citations: 

    0
  • Views: 

    1378
  • Downloads: 

    0
Abstract: 

Flood protection must be taken into account in almost all development projects. Owing to the fact that hazards associated with flooding (such as disruption of services, health impacts, famine and disease), the new approaches in flood risk management are needed. Therefore, it is essential that the selection of flood management option by cost-benefit viewpoint to be shifted to the selection of flood management option by considering the economic, technical, social, and environmental aspects. Due to the complexity of these challenges, water resources planners require a holistic, adaptive, incremental, and sustainable decision-making process, where multiple non-commensurate, competing, and often conflicting objectives (criteria) must be addressed and reconciled. During the past several decades, multi criteria decision making (MCDM), by its philosophical underpinning and the theory, methodology, and practice that have been developed on the basis of its holistic philosophy, has served as a harmonizing agent in technology, society, and policy. Thus, formidability of this method in addressing the flood management alternatives challenges is undeniable fact. In this paper, there are seven flood management measures in Gorganrood Watershed flood management project, including: conservation of natural condition, Golestan Reservoir management, levee construction, diversions-canal construction, flood forecasting and warning system and flood insurance. Prioritization of the alternatives is in demand of evaluation criteria. Each alternative would be prioritized based upon proposed MCDMs to investigate the most conclusive alternative. The flood management project is ranked based on eleven criteria, including: expected average number of casualties, recovery rate, gradual rate, expected annual damage, safety feeling, employment rate, public participation, landscape protection, wildlife habitat conservation, water quality conservation and technical feasibility and performance. These criteria have been classified into four main groups as social, economic, environmental and technical features. COMPROMISE PROGRAMMING MODEL (CP) is employed to rank these seven alternatives which are compared with simple additive weighted MODEL (SAW). SAW is known to be common method, which is accepted in many researches due to its simplicity. In this method, alternatives are assessed with respect to each criterion, whilst CP defines the best solution as the one in the set of efficient solutions whose point is at the least distance from an ideal point and the aim is to obtain a solution that is as close as possible to some ideal alternative. The results show that by increasing the value of P parameter, the CP MODEL emphasizes on the importance of recovery rate, expected average number of casualties and safety feeling, which categorized in economic, social and technical feasibility, respectively. This result is obtained by assessing the changes in criteria weights while the P parameter increase from P=1 to P=¥. In the proposed MODEL, integration of a flood warning system and flood insurance was chosen as the most conclusive alternative for flood hazard mitigation. This alternative is a combination of a pre and post disaster action. In contrast, SAW MODEL is unable to highlight or discriminate between the criteria. One of the criticisms over MCDM states that different techniques may yield different results when applied to the same problem. An analyst looks for a solution that is closest to the ideal, in which alternatives are evaluated according to all established criteria. Therefore, it is necessary to compare the MCDMs plus assessment of subjectivity with sensitivity analysis of input data. In this study, sensitivity analysis was performed to examine the response of alternatives when the criteria weights changed to its minimum and maximum values. The results show that the CP MODEL has less sensitivity to changes in criteria weights. Due to considering the ideal solution distance, CP MODEL has more sensitivity to economic and technical criteria in comparison with environmental and social criteria. Although SAW MODEL has less sensitivity to changes in criteria weights, it makes no priority between criteria even in sensitivity analysis. It is observed that the change of the MCDM methods produces differences in the final ranking of the alternatives. The discrepancy that appears between the rankings obtained by different MCDM methods, highly depended on the difference in their mathematical MODELing while solving a decision problem. Thus, the main focus must lie on the selection of the most appropriate MCDM method to be adopted, not to mention that proper structuring of the decision problem, considering the relevant criteria and decision alternatives are imperative facts on this issue.

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Issue Info: 
  • Year: 

    2018
  • Volume: 

    9
  • Issue: 

    35
  • Pages: 

    221-241
Measures: 
  • Citations: 

    0
  • Views: 

    1214
  • Downloads: 

    0
Abstract: 

One of the key issues for investors is the issue of creating an optimal stock portfolio. In the issue of choosing an portfolio, the decision maker faces different and sometimes conflicting goals such as rate of return, liquidity, dividend, and risk. In portfolio optimization, the main issue is the optimal choice of assets and securities that can be made with a certain amount of capital, but on the one hand, the uncertainties associated with each share, and, on the other hand, the multiplicity of the optimal portfolio selection MODEL, on the complexity of the problem increases. In this paper, the portfolio optimization under uncertainty has been studied. A randomized approach to converting uncertainty into a state of definiteness and agreeing to plan for a single objective is used in combination. Information about 20 pharmaceutical companies from the Tehran Stock Exchange has been used and the validity of the MODEL has been investigated. The results show that the stock portfolio offered has a high performance.

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Issue Info: 
  • Year: 

    2018
  • Volume: 

    29
  • Issue: 

    1
  • Pages: 

    1-14
Measures: 
  • Citations: 

    0
  • Views: 

    176
  • Downloads: 

    273
Abstract: 

Supplier selection is one of the influential decisions for effectiveness of purchasing and manufacturing policies under competitive conditions of the market. Regarding the fact that decision makers (DMs) consider conflicting criteria for selecting suppliers, multiple-criteria PROGRAMMING is a promising approach to solve the problem. This paper develops a nadir COMPROMISE PROGRAMMING (NCP) MODEL for decision-making under uncertainty on the selection of suppliers within the framework of binary PROGRAMMING. Depending on the condition of uncertainty, three statuses are taken into consideration and a solution approach is proposed for each status. A pure deterministic NCP MODEL is presented for solving the problem in white condition (certainty of data) and a solution approach resulted from combination of NCP and stochastic PROGRAMMING is introduced to solve the MODEL in black (uncertainty of data) situation. The paper also proposes a NCP MODEL under certainty and uncertainty for solving problem under grey (a combination of certainty and uncertainty of data) conditions. The proposed approaches are illustrated for a real problem in steel industry with multiple objectives. Also, a simulation approach has been designed in order to examine the results obtained and also verifies capabilities of the proposed MODEL.

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Author(s): 

POURZAND F. | BAKHSHODEH M.

Issue Info: 
  • Year: 

    2012
  • Volume: 

    4
  • Issue: 

    1 (13)
  • Pages: 

    1-26
Measures: 
  • Citations: 

    0
  • Views: 

    1142
  • Downloads: 

    0
Abstract: 

In this study, agricultural sustainability of selected townships of Fars province evaluated using MODEL of agricultural sustainability and COMPROMISE PROGRAMMING method. In this regard, data were collected from various sources such as Fars province Agricultural Organization and Fars Regional Water Authority in 2006. Townships of the province were classified into three groups, namely, sustainable (Kazerun, Lamerd, Mamasani and Abadeh), relatively sustainable (Lar, Eghlid, Firozabad, Fasa, Darab and Arsenjan) and unsustainable (Marvdasht, Estahban, Shiraz and Jahrom). Results indicated that townships in sustainable group had groundwater balance, more diversity in crops and lands with more organic substance. Furthermore, high nitrate concentration in groundwater, negative balance of groundwater, inefficient irrigation system, and over utilization of pesticides and chemical fertilizers were remarkable features of unsustainable group.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Author(s): 

ELAHI BEIN | SADEGH HOSSEINI SEYED MOHAMMAD | MAKUI AHMAD

Issue Info: 
  • Year: 

    2011
  • Volume: 

    22
  • Issue: 

    2
  • Pages: 

    107-114
Measures: 
  • Citations: 

    0
  • Views: 

    386
  • Downloads: 

    156
Abstract: 

Supplier selection is naturally a complex multi-objective problem including both quantitative and qualitative factors. This paper deals with this issue from a new view point. A quantity discount situation, which plays a role of motivator for buyer, is considered. Moreover, in order to find a reasonable COMPROMISE solution for this problem, at first a multi-objective MODELing is presented. Then a proposed fuzzy COMPROMISE PROGRAMMING is utilized to determine marginal utility function for each criterion. Also, group decision makers’ preferences have taken into account and the weight of each criterion has been measured by forming pair-wise comparison matrixes. Finally the proposed approach is conducted for a numerical example and its efficacy and efficiency are verified via this section. The results indicate that the proposed method expedites the generation of COMPROMISE solution.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Issue Info: 
  • Year: 

    2014
  • Volume: 

    27
  • Issue: 

    4 TRANSACTIONS A: BASICS
  • Pages: 

    545-552
Measures: 
  • Citations: 

    0
  • Views: 

    370
  • Downloads: 

    164
Abstract: 

One of the primary concerns in any system design problem is to prepare a highly reliable system with minimum cost. One way to increase the reliability of systems is to use redundancy in different forms such as active or standby. In this paper, a new nonlinear multi- objective integer PROGRAMMING MODEL with the choice of redundancy strategy and component type is developed where standby strategy is of cold type. In the proposed MODEL, system’s reliability is maximized along with minimizing system’s cost and weight. The proposed MODEL contributes to the literature by determining the redundancy strategies concurrently with determining redundancy levels and component types. The multi-objective MODEL is solved using the mathematical COMPROMISE PROGRAMMING technique for different Lp metrics and produces different Pareto solutions.

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Issue Info: 
  • Year: 

    2016
  • Volume: 

    9
  • Issue: 

    20
  • Pages: 

    91-102
Measures: 
  • Citations: 

    0
  • Views: 

    254
  • Downloads: 

    91
Abstract: 

This paper proposes a COMPROMISE MODEL, based on the technique for order preference through similarity ideal solution (TOPSIS) methodology, to solve the multi-objective large-scale linear PROGRAMMING (MOLSLP) problems with block angular structure involving fuzzy parameters. The problem involves fuzzy parameters in the objective functions and constraints. This COMPROMISE PROGRAMMING method is based on the assumption that the optimal alternative is closer to fuzzy positive ideal solution (FPIS) and at the same time, farther from fuzzy negative ideal solution (FNIS). An aggregating function that is developed from LP- metric is based on the particular measure of ‘‘closeness” to the ‘‘ideal” solution. An efficient distance measurement is utilized to calculate positive and negative ideal solutions. The solution process is as follows: first, the decomposition algorithm is used to divide the large-dimensional objective space into a two dimensional space. A multi-objective identical crisp linear PROGRAMMING is derived from the fuzzy linear MODEL for solving the problem. Then, a single-objective large-scale linear PROGRAMMING problem is solved to find the optimal solution. Finally, to illustrate the proposed method, an illustrative example is provided.

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Issue Info: 
  • Year: 

    2019
  • Volume: 

    50
  • Issue: 

    2
  • Pages: 

    297-312
Measures: 
  • Citations: 

    0
  • Views: 

    635
  • Downloads: 

    0
Abstract: 

Because of the significant impact of water on economic development, social stability and ecological balance, the allocation of water resources has become a worldwide issue. In this paper, a multi-objective planning MODEL consist of two objective functions was developed for water allocation to maximize the productivity of economical benefit and the equity of water allocation in Sefidroud basin located in Iran. A COMPROMISE PROGRAMMING method was applied to trade off both the objective functions. The different weights of the objective functions and the definitions of TDS, DSA and DSB schemes were investigated in terms of equity, economical benefit productivity and equity establishment. The results showed that TDS is the best scheme for balancing the target functions. With the except of TDS, surface water allocation and economical benefit do not follow a particular pattern in other weights of target functions, so that decision makers are confused to choose the best weights of the objective functions. Shannon Entropy theory is a suitable solution for selecting the best weights of the objective functions. The results obtained by applying the Shannon Entropy theory showed that the best weights of the objective functions for the productivity of economical benefit and water allocation equity according to the decision maker’ s priority were 0. 35 and 0. 65, respectively. Generally, the results of this study showed that if decision maker’ s priorities were not clear, Shannon Entropy theory and COMPROMISE PROGRAMMING method could be used to determine the weights of each objective functions in order to make a balance among the objective functions.

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Issue Info: 
  • Year: 

    2013
  • Volume: 

    4
  • Issue: 

    2
  • Pages: 

    191-208
Measures: 
  • Citations: 

    0
  • Views: 

    354
  • Downloads: 

    141
Abstract: 

Quality function deployment is a well-known customer-oriented design procedure for translating the voice of customers into a final production. This is a way that higher customer satisfaction is achieved while the other goals of company may also be met. This method, at the first stage, attempts to determine the best fulfillment levels of design requirements which are emanated by customer needs. In real-world applications, product design processes are performed in an uncertain and imprecise environment, more than one objective should be considered to identify the target levels of design requirements, and the values of design requirements are often discrete. Regarding these issues, a fuzzy mixed-integer linear goal PROGRAMMING MODEL with a flexible goal hierarchy is proposed to achieve the optimized COMPROMISE solution from a given number of design requirement alternatives .To determine relative importance of customer needs, as an important input data, we apply the well-known fuzzy AHP method. Inspired by a numerical problem, the efficiency of our proposed approach is demonstrated by several experiments. Notably, the approach can easily and efficiently be matched with QFD problems.

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Issue Info: 
  • Year: 

    2017
  • Volume: 

    42
  • Issue: 

    4
  • Pages: 

    669-686
Measures: 
  • Citations: 

    0
  • Views: 

    608
  • Downloads: 

    0
Abstract: 

Introduction: Rational planning and optimization of agriculture are essential because of water and land constraints، the need to increase economic profit and to reduce the negative impacts of fertilizers and pesticides. To this end، decision-makers and planners need to acquire knowledge and information on the quantity، quality، type، and distribution and cultivation area of agricultural products. Therefore، for planning and management of local and regional agriculture، we need to know the distribution of agricultural crops and their planting pattern. Over the years، experts have researched the proper cultivation area for major crops. In this regard، optimization of land allocation in agricultural sector is very important. The agricultural economy will have sustainable growth if the cropping pattern is determined based on the environmental potential and climatic conditions of each region. It is necessary that environmental conditions، soil type، water resources، technology and other parameters be considered to achieve the optimal cultivation pattern. Due to the variety of ecological and climatic conditions of Golestan Province of Iran، a relatively fertile land، availability of resources including surface water، adequate rainfall in parts of the province and human resources، relatively ideal conditions exist for agricultural development in the region. However، the agricultural status of this region is now unfavorable because of the lack of attention to the factors affecting the agricultural income such as product type، economic efficiency، crop performance، cultivation costs، required water for cultivation and other factors. Therefore، it is essential that rational management and planning be implemented to mitigate these problems and to increase the economic efficiency of the agricultural sector in the province. Accordingly، the main objective of this study is to optimize land allocation for grow crops and garden products based on the initial scenario of Jihad agricultural organization، current status and the environmental scenario to achieve economic goals and to identify capacities for various agricultural activities in this region. To this end، we analyzed agricultural scenarios based on COMPROMISE mathematical PROGRAMMING using multi criteria analysis tool (MCAT). Materials & methods: The study area is Golestan Province in the north east of Iran located between 52◦ 51' and 56◦ 21' E and 36◦ 24' and 38◦ 7' N. The climate، latitude، topography، water resources، and the natural vegetation of the region is diverse. The total area of the agricultural land in the province is about 679678 hectares and the irrigated cultivation is practiced in about 377866 hectares. The results of the land use planning of Golestan Province showed that about 316326 hectares of irrigated land have suitable ecological capacity to grow crops and garden products. Accordingly، in this study we carried out land planning to determine the optimal area for cultivation of irrigated crops and garden products in accordance with the proposed scenario of Jihad agricultural organization of the Province، the current status scenario and the environmental scenario. First، a comparison matrix was formed based on the 36 proposed products and 12 optimization factors for the agricultural land allocation. The matrix was completed based on experts’ opinions and scientific information in relation to the crops and garden products. Also، the optimization criteria were weighted using Analytical Hierarchy Process (AHP) method using Expert Choice software. Due to differences in economic performance and strategic importance of the crops، we defined a prioritization factor for both positive and negative ideal values for each of the criteria. Next، data analysis was implemented based on the COMPROMISE mathematical PROGRAMMING using the MCAT software for land allocation for each of the products. The three scenarios including current (business as usual)، organizational (the proposed Jihad agricultural organization) and the environmental option were assessed for performance of agricultural products. Results & discussion: The necessary data and information were collected and prepared using reports of the Jihad agricultural organization and the ongoing land use planning project of the Golestan Province (Salmanmahiny et al.، 2013). After data analysis، weights assigned to the criteria shown in the Table 1. In addition، the results of land allocation to each of the agricultural crops are shown in the Table 2. In the end، the performance of all products was assessed on the basis of the criteria illustrated in the Table 3. The results showed that water consumption with a weight of 0. 261 is the most important criterion among the considered criteria because of its important role in agriculture. Also، the results illustrated that the production of clover، barley، wheat and canola with 12. 37، 6. 91، 6. 81 and 6. 08 percent of the total area of the irrigated land have priority for cultivation، whereas according to scenario of Jihad Agriculture Organization most of the province's irrigated land should be allocated to wheat، soybeans and cotton. In comparison، the environmental scenario indicated that water consumption، the need for machinery، fertilizer and chemical pesticides can be decreased، whereas، the employment، benefit to cost ratio، quantity of dry matter، share in household basket and performance ratio of agricultural products can be increased at the same time. Conclusion: The results of this study clarified that the profitability and economic efficiency in the agricultural condition of Golestan Province can be increased by implementation of the environmental scenario. Moreover، this study shows that officials، managers، experts and farmers of the province can learn to reach an informed decision when optimizing the cultivation of each product using the results of the employed decision support system. Certainly، it would be useful to improve the agricultural condition of this region through considering the local conditions.

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