جستجوی مقالات مرتبط با کلیدواژه « Fuzzy » در نشریات گروه « مدیریت »

Green human resources management, as a strong tool that takes the role of human factors, can help organizations to fulfill their social responsibilities in order to protect the environment. This research has been carried out with the aim of systematically reviewing previous researches in the field of green human resources management, as well as identifying key elements and providing a structural model to implement the green human resources management process in the chemical and petrochemical industries of Bushehr province. By studying thematic literature and using the textual content analysis approach, six basic indicators were counted, and in order to localize them in order to implement green human resources management in the chemical and petrochemical industries, the Delphi technique was used in three rounds. The statistical population of the research was formed by managers and experts familiar with the subject and working in the field of petrochemical industries. A researcher-made questionnaire was used to collect data, and its validity and reliability were also confirmed. In order to design the structural model of the effective indicators for the implementation of the green human resources management process, the interpretive structural modeling approach in the fuzzy environment was used to manage linguistic ambiguities in judgments. The results of the modeling and analysis of Mik Mak showed that individual, group and organizational indicators are among the basic and influential indicators in the field of Sabza's human resources management; Therefore, managers are suggested to emphasize and pay more attention to this group of indicators.

In today’s competitive world, uncertainty is an integral part of all optimization problems. One of the cases where uncertainty has the greatest impact on optimization issues is SCN design. In most of the conducted studies, parameters such as demand, transportation cost and capacity of tehsils have been published in an uncertain manner. In this type of problem, various methods have been used to control these uncertainty parameters, which can be referred to as fuzzy programming, robust optimization, two-stage stochastic programming, multi-stage stochastic programming, multi-stage fuzzy stochastic programming, fuzzy robust optimization. Each of the mentioned methods has limitations in terms of its implementation. in the fuzzy programming method, there is no deviation from the data collected by experts’ opinions. In probabilistic methods, it is very difficult to determine the exact type of distribution function. Therefore, many researchers have investigated the strengths and weaknesses of each method in their studies. Therefore, in this paper we try to review the strength and weakness of these methods to apply the best approaches for different situations. In this paper, a real-world case study of a natural gas supply chain is investigated. By using concepts related to natural gas industry and the relations among the components of transmission and distribution network, a Five-level supply chain has been introduced and presented schematically.

Human resources are among the intangible assets of an organization, the result of their attitudes can lead or hinder the organization in achieving its goals. Among these attitudes are job enthusiasm and organizational indifference, which are at opposite ends of the spectrum; In such a way that it is necessary to reach job passion to get away from the forces that create indifference because indifference is considered a destructive attitude. In this regard, the purpose of this research is to investigate the factors affecting job enthusiasm and indifference of employees of Fars Regional Electrical Company. In order to collect data, firstly, 64 common factors affecting job engagement and indifference were identified by metacombination method; Then, by weighting according to the best-worst fuzzy method, the results indicated that the productive attitude and psychological empowerment, job attractions and justice-oriented are the most important factors.Then, he analyzed the relationship with Fuzzy Dematel method and the results indicated that the efficiency of the supervisor, unbalanced job demands, centered justice are influential factors and psychological empowerment, personality dynamics, productive attitude are influential factors. Finally, in order to measure the current situation, 213 staff members of Fars Regional Electric Company were selected from a community of 580 people by simple random method and it was found that job attractions scored the most driving points and justice-oriented with Earning a negative score was identified as an inhibitor of job engagement.

Part of the success in implementing policies goes back to the capacity to implement the policy because capacity is the ability to do so.

In this research, the factors leading to the improvement of the capacity to implement policies and the cause and effect relationship between them have been identified.

This research is applied and the research population is15 HSE policy experts in Kerman who have been selected through non-random and purposeful sampling. Data collection tools were interviews and questionnaires and FMEA and fuzzy dimmetel techniques were used to analyze the data.

The index of organizational support in formulating and implementing HSE policies has the highest and the index of creating organizational structure integration in relation to HSE has the least impact on other indicators to improve the capacity to implement these policies.

Efforts to improve the capacity to implement HSE policies should be accompanied by more investment to improve the quality of the organization's support index in the development and implementation of HSE policies to strengthen other indicators. Focusing on the continued presence of effective HSE experts in the organization and creating management stability can enhance the capacity to implement HSE policies

Managers and owners of small businesses often spend little time preparing a strategic plan and communicating between the strategy and executive layers. They spend most of their focus and time on securing capital and communicating with investors, which makes them to overlook important issues such as communication with the target market, customer satisfaction and trust, cost adjustment and development of income channels and formulation of the related strategies.. This research has been carried out with the aim of systematically reviewing previous researches in the field of strategy mapping and knowledge, as well as identifying key elements and providing a strategic map for new businesses in Bushehr province. The main goal of the research is to design a structural strategic model of effective indicators for starting small and start-up businesses. By studying the subject literature and using the textual content analysis approach, a set of fifteen basic indicators were identified, and in order to localize them in small and start-up businesses, the Delphi technique was used in three rounds. The statistical population of the research included managers and experts familiar with the subject and working in the field of small and start-up businesses. A researcher-made questionnaire was used to collect data, and its validity and reliability were also confirmed. In order to design a structural strategic model of effective indicators for the planning of small and start-up businesses, the interpretive structural modeling approach was used in a fuzzy environment to manage linguistic ambiguities in judgments. The results of the modeling and MICMAC analysis showed that the attraction and cultivation of expert employees, employee participation, effective leadership and the creation of a supporting information system are among the basic and influential indicators in the field of small and start-up businesses; Therefore, managers are suggested to emphasize and pay more attention to this group of indicators.

The belief of the stakeholders who provide tourism services in the destination plays an important role in the sustainability of destinations. The values ​​of variables affecting these beliefs are always ambiguous and the causal relationships between them are uncertain. If we want to consider the reality of the dynamics in their opinions, the complexity of the issue will increase. For this purpose, we used fuzzy logic, Bayesian belief networks and opinion dynamics models. It is implemented on the data of Iranian stakeholders with the aim of attracting Chinese tourists. The data was collected by the questionnaire during the years 2019, 2020 and 2021 and is related to 540 stakeholders. Finally, not only an agent-based simulation is provided to visualize trends and how they evolve or co-evolve, but the possibility of predicting defective and desirable trends is provided to prevent or strengthen them, respectively.

Research and evaluation in the formal and public education system as a mission-oriented activity is based on the principles, mission, goals and missions of the formal and public education system. The purpose of this study is to provide a research model and transformation-oriented evaluation with a data-based approach in the Iranian education system. The research method is mixed. Qualitative stage of inductive method and strategy of data foundation and Delphi fuzzy data theorizing and in quantitative stage of descriptive-survey type, fuzzy gap analysis strategy was used. Data collection is theoretically sufficient. Time and time coding of data with the help of MaxiQuoda 18 software from 26 pages of self-based notes based on observation, then 129 coding documents and ending with coding in-depth interviews with 11 experts, respectively, this stage with 98 categories it reached theoretical sufficiency. The initial axial coding pattern was provided to 12 experts from Farhangian University, Ferdowsi University of Mashhad, Payame Noor and Azad, until the final pattern was determined by fuzzy Delphi method. And the fuzzy Delphi changes were performed in 3 stages and the model reached theoretical saturation with 72 categories. The importance of the categories is between 0.7 and 0.9 and on average the categories have an importance of 0.79. The performance of the categories is between 0.35 and 0.6 and on average the categories have a performance of 0.493. The downward trend of the performance line indicates a decrease in performance and an increase in the phase gap.

Planning in organizations pays attention to safe operation for the purpose of moving the organization towards reducing occupational accidents and diseases and preventing the wastage of resources. Safety performance refers to the set of actions and behaviors that they perform to maintain and improve the safety and health level of themselves and their colleagues. In this research, identification and prioritization of the active factors of work safety (the case study of iron ore mines in Sirjan) were carried out. This research was applied and in terms of strategy, survey and statistical sample of the research were 12 safety managers and experts working in the mines of Sirjan city, who were selected through non-random and purposeful sampling. The tools of data collection were semi-structured interviews and letters, and to analyze the questions, the technique of analyzing disordered situations and its approach and the combined approach of hierarchical analysis and the methods of preference for similarity to the ideal solution are used. Based on the findings, the lack of allocation of the necessary budget for safety programs, the lack of specialist staff in the fields and direct treatments, training and equipment by direct safety specialists has taken the value in the relative index and has the greatest effect in reducing it. They are a safety function.

The present study aims to detect the factors affecting work-family conflict and its indexes and also to interpret their relationship to identify the related topic and measures, including goal setting, planning, decision-making, taking preventive measures, and countermeasures for bank employees and managers.

This research is mixed. In its qualitative part, the meta-synthesis method was applied and in the quantitative part, the comprehensive fuzzy interpretive structural model was used.  In the qualitative part 3,204 pieces of research, conducted on work-family conflict, were reviewed, among which 391 articles were selected as the sample. The statistical sample in the quantitative section included all the employees of Bank Melli Iran, Bank Mellat, Bank Pasargad, Shahr Bank, Bank Sepah, Tejarat Bank, Iran Zamin Bank, and Refah Bank located in Lar city. From among them, 22 experts were chosen through nonprobability sampling for they had eight years of work experience and were experts in work-family conflict.

The findings of the qualitative section showed that the factors affecting work-family conflict can be classified into four categories i.e. occupational, family, individual, and environmental factors. Also, the work-family indexes included doubt and caution, stress and anxiety, as well as personality, physical, work, and family problems. The findings of the quantitative part proved a cause-and-effect relationship between the factors affecting work-family conflict. The causes and the indexes were classified into 8 levels. The first level (the most impressible level), included the quality of family life, psychological growth, adaptive behavior, personality depletion, and family problems. On the second level, there were self-regulation inability and physical problems. The third level included the internal control center and spiritual intelligence. The fourth level included enthusiasm for work and organization, the family’s time pressure, family expectations, doubt and caution, stress and anxiety, and work problems. On the fifth level, there were the welfare and supportive work conditions, the supporter’s leadership style, care and nursing, and cultural conditions. The sixth level included work time pressure, conflicts, and work dangers. On the seventh level, there were the background characteristics, the importance of the job position, the dynamic intra-role requirements, the social conditions, and the lack of financial security. On the eighth level (the most influential level), there were job demand stress and human-centered organization design.

On the lowest level, the job demand stress and the human-centered organization design were the most influential. Paying undivided attention to job demands can overestimate the importance of the job and increase the time pressure, conflicts, and dangers of the work. Lack of attention to human-centered organizational design can lead to the use of human resources as tools, influence support in the workplace, and develop feelings of absurdity and nonhumanity in the individuals. If such issues go unnoticed, undesirable incidents may take place, and the family life quality, psychological growth, and adaptive behavior can be harmed. It also may lead the individuals to personality depletion and family problems. Therefore, the managers are recommended to pay attention to all the mentioned issues and the relationship among them since ignoring them can create many problems for the individuals and even the organization.

Natural Disaster Risk Assessment Is a vital step in establishing standards and generally prioritizing efforts to decline hazards risk. therefore, The Tsunami event is considered as one of the most devastating natural disasters. This Natural Phenomenon Can be considered as a serious threat in coastal areas, ports and piers and cause irreparable damages. Historical Records Indicate that tsunamis in the Indian ocean could influence parts of southeastern Iran. in addition to the risk of tsunamis coming from the Indian ocean, the active Makran fault is located in the vicinity of the coastline of the Oman sea and at a distance of about 100 km. This Fault Is the most dangerous fault that is located parallel to the Iranian coastline and is capable of causing large tsunamis. Also, Makran region is tectonically capable of causing large earthquakes induced tsunami and obviously the tsunami risk from Makran subduction zone is a serious threat to the southern coast of Iran that making the study of tsunami risk necessary for this region. The aim of this study was to assess the vulnerability of coasts in Sistan and Baluchestan province to tsunami risk. in this study, fuzzy logic and analytical hierarchy process (AHP) Models were combined to extract and analyze the vulnerability of the coasts in this province to tsunami risk. In This Study, the risk of tsunami vulnerability in the coasts of Sistan and Baluchestan were assessed in five classes as very low, low, medium, high and very high using four parameters including distance to coastline, elevation, slope, and vegetation cover. Fuzzy-AHP method using satellite images and spatial data within google earth engine cloud based environment and geographical information system. The results showed that 217.08 km2, 542.64 km2, 978.84 km2, 1218.35 km2, a1286.76 km2 of the study area are placed in very low vulnerability, low vulnerability, moderate vulnerability, high vulnerability, and very vulnerable regions, respectively. The Chabahar, Konarak and Bryce cities as well as majority of the coastal villages are located in the high vulnerability Tsunami Zone

Identifying the problems of the acquisition of technology plays a critical role in the future position of a firm. Therefore, analyzing the obstacles to the process of the  technology acquisition is very important. This issue is even more vital due to the technological market limitation and complexities in the field of the defense industry. Therefore, the prioritization of challenges improves the acquisition process. This research selects a mixed qualitative-quantitative method (based on literature review and the expert review for identifying the challenges of acquiring advanced defense technologies and then the fuzzy DEMATEL method to analyze them. In the next step, a network of causal relationships with different ranks is presented based on the degree of the influence and effects of technology acquisition. According to the results, "risks arising from the cooperation with other institutions" are the most, and "internal legal issues" are the least effected ranks. On the other hand, the international sanctions” are the most influential factors in the process of technology acquisition in the field of defense and "the financial agreements, the method to determine the shares of the partners and the agreed amounts and the exiting risks” are the least influential factors. These findings pave the way to design and implement  more salient policies and programs.

In recent decades, the topic of performance measurement has been one of the popular topics for large companies and manufacturers managers . The range - adjusted measurement ( RAM ) model in data envelopment analysis (DEA) is a non - radial model used to evaluate the performance of firms. Due to the presence of uncertain data in many investigations, a fully fuzzy range-adjusted measurement model with strong complementary slackness conditions to find efficient two-stage systems in a reference set is presented in this paper and it is used to evaluate airline . Given that we have a multi-objective network model of fully fuzzy range - adjusted measurement with strong complementary slackness conditions, the proposed model is solved using the lexicograph method . We also compare it with the existing fully fuzzy network DEA - range adjusted measurement model. Finally, we apply this model using the data of 14 Iranian airlines.

Rapid changes in technology have affected customer expectations. The environment is volatile. The main problem of organizations is to formulate a strategy that can maximize the customers’satisfaction in various future scenarios through optimal resource management. The purpose of this study is to provide a model for developing a robust strategy for designing banking services in conditions of uncertainty. The paper selects one of the Iranian banks as its case study. By implementing a mixed research methodology, first, it identified the reduction of the number of branches and the upgrading of the infrastructure as two robust strategies and then, it pinpoints the goals and constraints by mathematical modeling. In the conclusion, the optimal amount of branches and budget are determined.

The dynamics of the natural environment causes changes in spatial and temporal scales. These changes can lead to morphogenesis processes that sometimes lead to destructive and irreversible effects. One of these changes is the mass movement, especially the landslide, which causes a lot of financial and human losses in different geographic areas each year, resulting in severe erosion of the soil. Shaho area in Kurdistan province and Kamyaran city has been selected as one of the areas susceptible to landslide in terms of its specific topographic and geographical location. n this research, in order to investigate and zoning the susceptible areas of slipping, 8 slope parameters, slope, elevation, lithology, land use, distance from fault, distance from the river and distance from communication were used as factors affecting the research problem. Also, two methods of fuzzy logic and ANP were used to analyze the data and select the optimal location. The results show that the study area has a relatively high slip potential. According to the results of this research, the study area was classified in terms of slip potential in four classes. The degree of slipperiness of the region varies greatly (7.5%), high (27%), moderate (31%) and low (34.5%). Due to the density of rural areas and population density in the area as well as tourist status of the area, it is necessary for the authorities to identify the areas susceptible to landslides to take necessary protective measures and measures.

Development and implementation of safety and health policy is one of the necessities of the organization to reduce accidents and occupational diseases. Policy means the decisions and politics and the purpose of implementing the policy are the activities that it performs directly. Numerous factors lead to the failure to implement occupational safety and health policies. In this study, these factors have been identified and ranked. This research is applied and strategic in terms of survey. The research population consisted of 15 HSE managers in Kerman province who were selected through non-random and purposeful sampling. Data collection tools are interviews and questionnaires and FMEA technique and integrated approach of AHP and fuzzy TOPSIS have been used to analyze the data. Based on the findings, important factors influencing the failure to implement safety and health policies are: Lack of proper organizational structure and lack of funding for implementation. According to the research findings, it is necessary that organizations pay more attention to creating and strengthening the structure of safety and health units and monitor the implementation of safety and health policies by estimating and allocating the necessary budget.

Health and safety policies are implemented in the organizations to reduce occupational accidents and diseases and prevent waste of resources. Policy means the decisions and implementing the policy means the activities that help implementation directly. Numerous measures will reduce the failure to implement occupational safety and health policies. In this research, these factors are identified and ranked.This research is applied and adopts survey as its strategy. The research population consists of 15 HSE managers in Kerman province who are selected through non-random and purposive sampling. Data collection tools are interviews and questionnaires and FMEA technique and integrated approach of AHP and fuzzy TOPSIS are used to analyze the data. Based on the findings, important and effective measures to reduce the failure of safety and health policies implementationinclude reducing the change of managers and requiring new managers to implement safety and health policies, developing scientific programs in accordance with the organization's capabilities and creating an appropriate organizational structure. According to the research findings, it is necessary for organizations to pay more attention to creating and strengthening the structure of safety and health units by carefully planning and changing the approach of managers.