نشریه اندیشه آماد
پیاپی 78 (پاییز 1400)

 Due to the key role of the aviation industry in maintaining and promoting safety, efficiency and legality in aerial transportation, this industry has a special place in the economic and social dynamics of society.  Therefore, maintenance of parts, timely supply of equipment and their reliability for industry owners is a strategic priority of any country.  The purpose of the present study is to study the future of maintenance and repair of Iran's aviation industry and to propose appropriate strategies to deal with each scenario.

In the present study, the scenario approach was used with Scenario Wizard software to mediate possible futures and the aviation industry was selected as a case study.  This research is applied in terms of purpose and a survey in terms of method which is done at the exploratory level. statistical society includes aviation industry specialists and managers and university experts that aimed judicative sampling and network (snowball) method has been used.

Using balanced interaction analysis, 5 strong scenarios were obtained and 3 scenarios were selected as optimistic, probable and pessimistic scenarios and also suggestions was presented by this industry experts.

based on the research findings, the reliability of components, allocation of financial resources and proper access to the equipment system have the greatest impact on the future of maintenance and repair of the aviation industry, especially the three scenarios of takeoff, cruise and stall (Landing) for every of them measures have been considered and strategies appropriate to these scenarios have been proposed by experts in the field of aviation industry.

goods storage or maintenance is One of the logistic activities that it is tried in this article to meet its evaluation based on the arrangement system, while getting acquainted with the subject of warehouse and warehousing. Therefore, the purpose of this research is to evaluate the warehouses of a military organization based on the arrangement system.

This applied research is a descriptive research in terms of purpose and sectional research in terms of time. Research’s statistical society is the whole of one of the Islamic republic of iran army forces logistics commandantship staffs which its number is 250 and using Random sampling and Cochran's formula 151 people were selected as members of the sample. In this study, customized questionnaires were used to evaluate the warehouses in terms of arrangement system (5S) studied in the main depot, to analyze the results of the questionnaire SPSS 24 software is used.

The mean test, according to the summary of the opinions of the sample members, showed that only in the cleaning dimension, the warehouses of the studied organization are not in a good condition and in other aspects of the arrangement system, the warehouses of the studied organization are in a good condition.

The results showed that the warehouses are in a good condition in terms of arrangement system. Of course reminding this point is essential that regarding average of opinions is about 3 and in mid range likert test is occurred it cannot be said that the warehouses are completely in desired condition. Thus In order to achieve the desired result, the basic principles of quality inclination in the category of arrangement system should be applied. At the end, suggestions were made to upgrade and improve the elements of the arrangement system

Maintenance is one of the most important parts in the planning of any organization today and its role in the NAJA is more than other government organizations. The purpose of this study was to identify the requirements for TPM implementation in the NAJA light vehicle network.

This research is applied which has been done with a qualitative method. Data collection methods included interviews and documentary methods (archival studies) and non-documentary methods (non-archival studies). Content analysis and coding methods have been used to analyze the information.

The research findings have shown that according to the results obtained from the review and analysis of themes related to the implementation requirements of TPM in the NAJA’s  light vehicles maintenance, totally 43 basic themes and 7 constructive themes (including: knowledge and education, cultural, process And technology, management, manpower, operational, planning) were found. According to the Pareto principle and the 20/80 law, from total of 43 basic themes identified, 8 themes with the highest percentage of importance have been identified, which include teaching TPM principles to employees and executives, providing new IT infrastructure including CMMS, training Maintenance with TPM direction, support and participation of managers and senior organizational officials, anticipation of motivational stimulants in staff and units, convincing provinces and independent units of the TPM implementation importance, establishing new and standard repair centers in accordance with TPM, Full PM implementation.

The main purpose of this study is to measure Imam Hussein University staff satisfaction from the services of the staff.

This research is of applied type with descriptive-survey approach. Its research method is also mixed (qualitative and quantitative). This research includes two parts: identifying the variables affecting employees satisfaction and then measuring them. In the first part, for data collection, content analysis was performed after using document method. Then, in order to be more appropriate to the environment and requirements of the university, a validity questionnaire was distributed and collected among 10 university and field experts. CVR index was used for validation. Thus, the variables affecting employee satisfaction were calculated. In the second part, the variables confirmed in the previous step were measured using a questionnaire. The statistical population was all employees who used the transportation service. The statistical sample was also a whole number.

The final research questionnaire includes 33 questions (15 questions of vehicle equipment aspect and 18 questions of transport management aspect) in the form of 7 components of hygiene, cleanness and travel comfort and safety, technical quality of vehicles, professional ethics, customer relationship, supervision and control and based on five levels option of Likert spectrum was adjusted and analyzed usin  SPSS software in two levels of  descriptive  statistics and  inferential statistics.

According to the obtained results, there is dissatisfaction in both dimensions of car and equipment and transportation management, but dissatisfaction is more in the dimension of car and equipment, and respectively the components of car hygiene and cleanness, control and supervision, professional ethics and travel comfort has worse condition.

by increasing the occurrence of disruptions and unexpected changes in the business, the development of a resistant supply chain is a key opportunity for leading companies to gain a competitive advantage and turn threats into unique opportunities. on the other hand, in order to develop a resistant system, the need to monitor and evaluate the current position and planning of improvement route will be undeniable and inevitable. the purpose of this study is to provide a model for assessing the supply chain resistance in the automotive industries.  

In terms of purpose, research is a developmental one. In terms of implementation, it is a descriptive research and from philosophical point of view, it is interpretive. to achieve the research’s goal, in the first step, the most important enablers of supply chain resistance in the automotive industry were identified. then, through interpretive - structural modeling, the causal relationships between them were explained by experts. in the next step, by the graph theory method and matrix approach, the degree of supply chain resistance in optimal, current and minimum conditions in  Pishgam part producing company was determined and the results sensitiveness was analyzed.

The supply chain resistance of this company is at the level of  %31.23. Sensitivity analysis showed that enabling the risk and income sharing, supply chain adaptability and structure are the first to third priority to improve the resistance level of the company's supply chain.

Enabling supply chain structure, cooperation, trust, information sharing and openness are key factors and facilitate the improvement process of other enablers. Financial strength enabler is effect and is acquired  from the improvement of other incentives and will facilitate the process of achieving a resistant supply chain. this model helps managers evaluate the consequences of their decisions to improve supply chain resistance.

 Due to the complexity and uncertainty of supply chain factors in organizations that are involved with a wide range of internal and external factors. Any action to reduce or eliminate a risk can lead to a reduction or increase in other risks. These complexities and high levels of uncertainty are due to disruptions, challenges and threats in the supply chain. Therefore, having a general idea of supply chain risks and the relationships between them can lead to a more effective and comprehensive strategy in reducing, changing or eliminating risks. The purpose of this study is to identify risk factors and show the structure of potential risk relationships of drinking water supply chain in a sample municipal water and wastewater company, with an interpretive structural modeling (ISM) approach.

Based on the Delphi method, and studying the other researches, main risks of the drinking water supply chain was identified. Then, with the ISM approach, 12 experts with at least 15 years of experience in technical and managerial fields in different categories were asked to complete the questionnaires based on conduction intensity and risks dependence.

Considering the content validity of water supply chain risk and determining the final risks, the structure of the relationships between modeling risks was extracted and pairwise comparison relationships between risks are obtained after collecting the opinions of experts.

The results showed that supply chain risks such as natural phenomena risks, financial credit, customers, social and communications, are at lower levels of the model and have the greatest impact on other risks and are the cause of change or the escalation of higher-level risks such as resource risks, strategy, organizational culture, politics, processes and operations

Aim &

external pressures of the legislators, customers, suppliers, rivals, social groups and media increasingly forces the organizations to include activities related to environment in their business processes. Green Supply Chain management is a considerable subject among the academics and experts. this system is one of the new innovations to increase the supply chain management ability. The main goal of the research is combining evaluation and ranking of green suppliers with the mixture of path analysis and decision making technics(swara and topsis).

research method from the aim viewpoint is applied and from the method of data gathering point of view it’s descriptive-survey. For this, first seven success critical agents in acceptance of Green Supply Chain management system was extracted by reviewing the literature. Research’s statistical society and sample for investigating critical agents impact on the gas industry includes 80 experts and specialists that because of the society limitation all of the sample members were used to gather information of the questionnaire. Also the sample which is under reviewing to complete the second questionnaire and perform the swara technic includes 40 experts and managers of the gas industry whom to evaluate the agents using questionnaire their viewpoints were exploited. At last comments of 12 industry’s experts were used to rank the suppliers. Findings and

Output of the path analysis indicates that all of the success critical agents is effective in acceptance of Green Supply Chain management system. Also swara analysis output showed that “staff full participation” with highest weight is the most important success critical agent and “senior management obligation” and “product design/ green process” agents are next priorities from the importance viewpoint. Also “performance measurement” agent with lowest weight was identified as least important success critical agent in acceptance of Green Supply Chain management system in gas industry. At last ranking of seven industry suppliers were determined using topsis technic and applied suggestions was presented to industry managers.

The manuscript discusses the overview and specification of the existing Operations Research methods for their implementation in terms of addressing distribution tasks, in particular to optimize delivery routes at a City logistics scale. First of all, a detailed literature review in a given context is elaborated, while the description of potentially relevant techniques to be applied is presented. The manuscript objective is to identify the most appropriate and benefit methods for their implementation to solve vehicle routing problem (hereinafter as VRP) at a City logistics scale and related optimization operations; i.e. to seek the shortest possible routes during the customer's delivery activities. In this matter, it is important to state that relevant distribution (pick-up and delivery) tasks can be expressed in a form of graphs on specified transport networks, and thereby use the individual techniques of graph theory. The particular transport network, as the basic concept of transport theory, is defined as a finite set of vertices and edges representing the infrastructure of roads of a network. Each network must be coherent, i.e. there must be at least one path for each vertex pair connecting these two vertices. Each network edge as well as vertex is defined by a certain value or set of values, for example, the edge length, the time it takes to pass, the amount of work that needs to be done on the edge, etc.