Papers by mohammad reza mehregan
The purpose of this research is to design a sustainable supply chain model with an emphasis on be... more The purpose of this research is to design a sustainable supply chain model with an emphasis on behavioral factors for foodstuff in Kermanshah province. This is an applied research. The literature review was the outcome of a library study such as books, journals, dissertations, articles, and so on, and the data were collected through a questionnaire which was analyzed by statistical methods. Regarding the subject of this research, the study population consists of managers and staff associated with the supply chain in Kermanshah food companies, involving 100 people. Having analyzed the data using the structural equation modeling and PLS software, it was turned out that the training environment, innovation, motivation, staff empowering, mutual trust and respect, as well as teamwork had a positive and significant effect on the sustainable supply chain with three environmental, social and economic indicators.
As international corporate activities increase and specialization develops, the prevailing compet... more As international corporate activities increase and specialization develops, the prevailing competitive relationship in the IT industry is no longer the simple competition between enterprise and enterprise, but becoming the competition among strategic alliances. So the selection of alliance factors has become the most important problem for the IT enterprise in KM strategic alliance to make decisions. Factors' performance decides the effectiveness of the KM strategic alliance and can lead to the success and failure of strategic alliance. The evaluation and selection of appropriate partner is a multi—objective and multi—layer comprehensive problem, and some evaluation factors are subjective. To evaluate the factors objectively, this paper establishes the index system of factors in KM strategic alliance according to BSC index model. In the process of evaluating and selecting factors based on TOPSIS method to standardize the evaluation result so that we can get more objective and eff...
Expert Systems with Applications
Petroleum Business Review, Mar 1, 2019
Supply chains have experienced rapid growth in recent years. Focusing purely on economic performa... more Supply chains have experienced rapid growth in recent years. Focusing purely on economic performance to optimize costs or return on capital can no longer guarantee development or sustainability in the chain. Hence, the concepts of green SCM and SSCM emerged to emphasize the importance of social and environmental concerns along with economic factors in supply chain programming. Using the SD method and considering KM , this study investigates the variables related to this topic and the variables of sustainable supply chain management and it determines the relationships between these variables and their impact on the research purpose. To achieve this, first, previous studies are reviewed, and the relevant variables are extracted and finalized according to the experts. Next, SD modeling is designed and various scenarios are defined by changing the effective values of the system. Eventually, several policies are presented to achieve the optimal situation. The optimal values for the ten main influential variables are extracted according to the expert opinion and the effects shown in the model are determined by these changes.
Mudīriyyat-i ṣan̒atī, 2016
In particular, by identifying clusters of Individuals, households, organizations, cities, countri... more In particular, by identifying clusters of Individuals, households, organizations, cities, countries and nationalities with similar behavioural patterns, it can assist in the crafting of more effective interventions and incentives targeted to specific energy cultures. it also helps energy supply companies understand different behavioural clusters among their customers, so as to better tailor their tariff schemes and products. The purpose of this paper is clustering of buildings by using Grey Set Theory. This theory has the advantage of using fewer data to analyze many factors, and it is therefore more appropriate for this study rather than traditional statistical regression which requires massive data, normal distribution in the data and few variant factors. Gray clustering in this study has been used for two purposes. First, all the variables of building relate to energy audit cluster in two main groups of indicators and the number of variables is reduced. Second, Grey Clustering wi...
Mudīriyyat-i ṣan̒atī, 2018
Objective: The purpose of this study is to provide a multi-objective model for ground transportat... more Objective: The purpose of this study is to provide a multi-objective model for ground transportation of hazardous materials in the hub network that tries to minimize the costs of transportation and construction of the hubs and the links, considering the existing risk in the hazardous materials transportation. Methods: The problem with the proposed Hub Location model will be solved using the real data of National Iranian Oil Products Distribution Company and applying the Global Criterion Method. Then the sensitivity analysis of the model's results on some parameters is performed. Results: Considering the results of the model for 10 hubs, Chaharmahal and Bakhtiari was chosen as the new hub location. The supply of oil products to each of the areas was also provided. Conclusion: Hazardous materials as raw materials or strategic products in different industries play an important role in the industrial development of the country. Transportation of hazardous materials is very important...
Financial Innovation, 2022
In recent years, multi-criteria sorting problems have become an interesting topic for researchers... more In recent years, multi-criteria sorting problems have become an interesting topic for researchers working on multi-criteria decision-making. ELimination and Choice Expressing REality (ELECTRE)-TRI and FlowSort are well-known approaches suggested for such a classification. The current study aimed to implement ELECTRE-TRI and FlowSort methods in the stock portfolio selection (SPS) as one of the most popular and important decision-making subjects and compare the outcomes of each method to understand how these methods perform in SPS problems. In this study, the best–worst method was applied to determine the weights of criteria. Four approaches for ELECTRE-TRI and 15 approaches for FlowSort were considered. Finally, 19 different approaches were considered to select stocks from a large pool of stocks. Results indicated that the model parameter should be properly defined to minimize inconsistencies and improve the power of the model.
The present study aimed at visualizing the Soft Operations Research (SOR) domain. For this purpos... more The present study aimed at visualizing the Soft Operations Research (SOR) domain. For this purpose, the six-phase mapping process was used. In this process, the first phase deals with extracting the data. Analysis unit is selected in the second phase. In the third and fourth phases, frequency of articles is studied and similarities among the extracted articles are determined, respectively. In the fifth phase, the related areas are identified by using a clustering algorithm. Finally, subject areas are mapped and analyzed by using the clustering steps in the sixth phase. Based on the results of the mapping process in this research, six clusters in the areas of management and social sciences, engineering sciences, behavioral sciences, geology and environmental studies, sociology and natural resources and mathematics were obtained.
The aim of this paper is to present the prediction model of the transport energy demand in Iran. ... more The aim of this paper is to present the prediction model of the transport energy demand in Iran. Markov chain grey model (MCGM) is proposed to forecast the transport energy demand of Iran. Then it is compared with grey model (GM) and regression model. Moreover, the MCGM forecasting model is used to forecast the annual gasoline demand of Iran up to the year 1400. The aim of this paper is to present the prediction model of the transport energy demand in Iran. Markov chain grey model (MCGM) is proposed to forecast the transport energy demand of Iran. Then it is compared with grey model (GM) and regression model. Moreover, the MCGM forecasting model is used to forecast the annual gasoline demand of Iran up to the year 1400. ..
Journal of Medicinal Plants, 2017
The collapse of large corporations such as Enron and WorldCom caused much concern about the ethic... more The collapse of large corporations such as Enron and WorldCom caused much concern about the ethical behavior of accountants among users of accounting service. Ethical behavior in accounting is one of the distinguishing features of accountants, which enable them to make the best decisions for stakeholders. Professional ethics learning plays a major role in the development of ethical behavior. Also, TOPSIS method is a well-known methodology that is applied in a various decision making problems. On the other hand, in order to determine the importance of criteria, the Entropy method is known as a powerful tools. Therefore, the purpose of this study was to investigate the effect of ethics teaching methods on the development of ethical behavior in accounting. This is done by means of an integrated Entropy/TOPSIS based Model for Financial prioritization of professional ethics teaching methods in accounting. The findings of the study showed that the variables of ethics education, style of t...
In this study, a hybrid algorithm is presented to tackle multi-variables robust design problem. T... more In this study, a hybrid algorithm is presented to tackle multi-variables robust design problem. The proposed algorithm comprises neural networks (NNs) and co-evolution genetic algorithm (CGA) in which neural networks are as a function approximation tool used to estimate a map between process variables. Furthermore, in order to make a robust optimization of response variables, co-evolution algorithm is applied to solve constructed model of process. Results of CGA are compared with genetic algorithm (GA). This algorithm is tested in a case study of open-end spinning process.
The International Journal of Humanities, 2014
The aim of this paper is to develop a prediction model of energy demand of Iran's industrial ... more The aim of this paper is to develop a prediction model of energy demand of Iran's industrial sector. For that matter a Markov Chain Grey Model (MCGM) has been proposed to forecast such energy demand. To find the effectiveness of the proposed model, it is then compared with Grey Model (GM) and regression model. The comparison reveals that the MCGM model has higher precision than those of the GM and the regression. The MCGM is then used to forecast the annual energy demand of industrial sector in Iran up to the year 2020. The results provide scientific basis for the planned development of the energy supply of industrial sector in Iran.
European Online Journal of Natural and Social Sciences, 2013
In this article, we want to design a model for evaluating the performance of companies in the sto... more In this article, we want to design a model for evaluating the performance of companies in the stock market by using TOPSIS and sensitivity analysis. We use financial ratios as criteria in TOPSIS algorithm. In this methodology, first we try to rank companies and then use sensitivity analysis for determining positive and negative points of the company and suggest improving performance of the company.
Iranian Journal of Information Processing & Management, 2012
هديكچ : تخاسريز تيعضو يسررب ،شهوژپ نيا يلصا فده ميهست ياه تسا روشك يتايلام عماج حرط رد شناد . ،هد... more هديكچ : تخاسريز تيعضو يسررب ،شهوژپ نيا يلصا فده ميهست ياه تسا روشك يتايلام عماج حرط رد شناد . ،هدافتسا دروم يشهوژپ دركيور تسا يدروم هعلاطم ،نآ شور و يفيك دركيور . زا ،شهوژپ فده هب لين يارب يتخاسريز رصنع راهچ » دربهار و يربهر 4 « ، » گنهرف « ، » راتخاس « و ، » يرواّنف تاعلاطا « تسا هديدرگ هدافتسا . تكراشم ناگدننك هب تخاسريز ،يلك روط شناد ميهست ار مشچ يمك اب روشك يتايلام عماج حرط رد طسوتم ،يشوپ دندرك يبايزرا . تكراشم همه هك تسا نيا لمأت لباق رايسب هتكن رد ناگدننك دنيارف لماع ،هبحاصم » دربهار و يربهر « يتخاسريز فعض هطقن نيرتمهم ار يهست م روشك يتايلام عماج حرط رد شناد م ي دنتسناد . » تيريدم هب دامتعا « و » زكرمت لااب « هبتر رد زين اه ي يدعب هب فعض ناونع دروم ،هدمع يتخاسريز ياه تفرگ رارق هراشا . يشهوژپ نيتسخن نيا ،ققحم سرتسد رد تاعلاطا ساسارب تخاسريز هك تسا شناد ميهست ياه حرط طيحم رد دروم ار اه رارق يسررب تسا هداد .
International Journal of Applied Decision Sciences, 2021
International Journal of Applied Decision Sciences, 2021
Kybernetes, 2020
Purpose Oil is the natural resource recognized as the most important source of revenue in oil-dep... more Purpose Oil is the natural resource recognized as the most important source of revenue in oil-dependent countries and is most often referred to as being susceptible to corruption owing to its strategic importance. A major challenge in addressing and encountering the problems in complex social systems, such as corruption, is how to structure the problematic situation and how to capture mental models of the stakeholders involved in the situation, and also how to identify the system’s behavior in response to various policy intervention attempts in the long run. This study aims to shed new lights on modeling and simulating corrupt system of the oil industry, as a complex social system needed to be structured according to social system theories’ principles. Design/methodology/approach Parson’s theory is applied as a basic framework to capture the complexities of a corrupt system, dividing the system into political and structural, economic, legal and judicial and cultural and social sub-s...
Cercetari Agronomice in Moldova, 2018
The loss of chemical characteristics and quality of the fresh seedless barberry fruit during stor... more The loss of chemical characteristics and quality of the fresh seedless barberry fruit during storage and qualitative losses of its dried fruit are the most important postharvest challenges in barberry industry and its exports. The fresh harvested fruit samples were dried using an electrical drier at 50°C to 50% moisture content. Thereafter, the effects of hot water alone (65°C for 45 sec), and hot water + 2% calcium chloride were carried out on the quality maintenance and chemicals during the cold storage of seedless barberry. The results showed that the samples treated with calcium chloride stored at 2°C had the highest TSS over time, whereas the titratable acidity of barberry fruits was not significantly affected by postharvest treatments. Hot water alone or in combination with calcium chloride treatment increased redness and chroma values result in better appearance quality than control. In addition, the treatments reduced the variable L* and thereby enhanced fruit lightness. The...
Research Journal of Applied Sciences, Engineering and Technology, 2013
The purpose of the present research is identification and classification of factors affecting ICT... more The purpose of the present research is identification and classification of factors affecting ICT knowledge workers' turnover in Iran's mobile communications industry. After reviewing research literature, seeking experts' opinions and doing statistical analyses, 11 variables were identified as the main turnover precedents; then using exploratory and confirmatory factor analysis, the aforementioned factors were classified in three categories. Results of the research suggest that the personal, job-related and internal/extra-organizational aspects, respectively, explain ICT specialists' and knowledge workers' turnover in Iran's mobile communications industry.
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Papers by mohammad reza mehregan