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Open Access Article
1 - Comparative studies of three types of products (remanufacturing, refurbished and new products) on warranty cost and profitability
Jafar RaamBejandi Mahsa SoltaniNeshan Ayyub Ansarinejad Somayeh TaghipourVagargah -
Open Access Article
2 - Environmental risk assessment of urban development projects Tehran 19th District using spatial EFMEA (Case study: the operation of provincial parks)
salman hematinia Sahar Rezaeyan Seyed Ali JoziRisk assessment approach is a key element in the establishment and development of management systems. The components of the management systems more and more closely at the results more credible, respectively. One component that is particularly involved in issues of the MoreRisk assessment approach is a key element in the establishment and development of management systems. The components of the management systems more and more closely at the results more credible, respectively. One component that is particularly involved in issues of the environment component is location. The system is designed to produce, analyze, store and display spatial data is geographic information system. The aim of this study was identification and assessment of environmental risk factors with using non-spatial and spatial components including their location and extent of risks affect risk using spatial analysis of failure modes and effects on the environment (Spatial-EFMEA). At first checklist was prepared and preliminary assessment. Then complete Spatial-EFMEA worksheet and then according to the table, analyzed the likelihood and extent of risks and compute risk priority numbers respectively. Finally, using the frequency distribution method, results of the risk levels from low frequency, very low, low, medium, high, very high and critical level were classified for above-average levels of risk control measures and evaluate the proposed secondary. The results showed that 9% of risk associated with the buildings, 25 percent of risk associated with the green space, 16% of risk associated with the Green Ring and band Hulk, 16 percent of risk associated with the women area, 11% of risk associated with the sport area, 6% of risk associated with the parking and 17% of risk associated with the public area. Manuscript profile -
Open Access Article
3 - Influence of Notch Depth-to-Width Ratios on J-Integral and Critical Failure Load of Single-Edge Notched Tensile Aluminium 8011 Alloy Specimens
C.S Sumesh P.J Arun Narayanan -
Open Access Article
4 - Review of Damage Tolerant Analysis of Laminated Composites
X.L Fan Q Sun M Kikuchi -
Open Access Article
5 - Implementation of two assessment models Based on Failure Rate and NDEA in production supply chains with the approach of choosing the right supplier
mehdi latifiee Morteza Shafiee -
Open Access Article
6 - Effectiveness of Culture- Oriented Schema- Based Pre-Marrital Education on Spouse Choosing Beliefs and Fear of Failure in Marriage in Divorced Parents Single Girls with Abandonment Schema
Maryam Abbaspour Golsefidi Shahnaz KhaleghipourThe research aimed to investigate the effectiveness of culture- oriented schema- based pre-marital education on spouse choosing beliefs and the fear of failure in marriage in divorced- parents single girls with the schema of abandonment. The research design was semi-exp MoreThe research aimed to investigate the effectiveness of culture- oriented schema- based pre-marital education on spouse choosing beliefs and the fear of failure in marriage in divorced- parents single girls with the schema of abandonment. The research design was semi-experimental with a pre-test-post-test and follow-up with a control group. The statistical population included the single divorced- parents- girls with the schema of abandonment in Isfahan City. Thirty individuals were selected by convenient sampling method and randomly assigned in two experimental and control groups, 15 subjects each. Young & Brown (1998) Early Maladaptive Schemas Questionnaire- Short Form (EMSQ-SF), Cobb, Larson & Watson (2003) Attitudes about Romance and Mate Selection and Esmaeilpour& Nourmohammadi (2022) Fear of Marriage Questionnaire were administered to the participants. The experimental group was exposed to 8 sessions of 90 minutes of culture- oriented schema- based pre-marital education program, but control group did not receive any. The data were analyzed by repeated measure analysis of variance. The results showed that culture- oriented schema- based pre-marital education had a significant effect on the rejection and abandonment schema, the spouse-selection beliefs including believing in love, experience-centeredness, idealism, contrast-seeking, and easy-to-see, and the variable of fear of marriage in the post-test stage. (p < 0.05). Concerning the results of the research; culture- oriented schema- based pre-marital education was an effective intervention to reduce the ineffective beliefs of choosing a spouse and the fear of marriage among single girls who had divorced parents. Manuscript profile -
Open Access Article
7 - Financial crisis and profit smoothing technique
Behrooz Ghorbani mehrdad ghanbari babak jamshidinavid Alireza MoradiThe financial crisis is a long-term process which affects many financial and operational aspects of companiesand the financial reporting system has played a major role in this process by employing different accounting methods.The purpose of this study is to analyze the MoreThe financial crisis is a long-term process which affects many financial and operational aspects of companiesand the financial reporting system has played a major role in this process by employing different accounting methods.The purpose of this study is to analyze the financial crisis by applying the method of smoothing the profit and considering the effects of the variables of the positive accounting theory.This research is a semi-experimental analytical researchWhich is applied in terms of purpose and is classified as descriptive research. Data were analyzed using a sample of 144 listed companies in Tehran Stock Exchange,during the period of 10 years (2007 to 2016), the data were combined and the multivariate regression model was analyzed.The results of the first to third hypotheses indicate thatthere is no significant relationship between the lack of liquidity, the inability to fulfill obligations and the failure of the operation with the profit smoothingand the reason for this is that the companies did not pay much attention to the use of smoothing in the context of the financial crisis.There is also a significant and inverse relationship between bankruptcy and profit smoothingwhich shows that companies facing bankruptcy by smoothing the profits seek to improve the conditions of bankruptcy. Manuscript profile -
Open Access Article
8 - Prioritization and weighting of factors on the reduction of safety performance in mines based on the fuzzy hierarchical analysis method (Study case: Sirjan iron ore mines)
Somayeh Rashidi sajad zare ida tayebiyanPlanning 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 pe MorePlanning 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. Manuscript profile -
Open Access Article
9 - Modeling the factors influencing the management of fear of entrepreneurial failure in Iranian start-up businesses
ALiAsqar Karami Javad Mehrabi Parviz SaketiRegarding the role of entrepreneurship in the economic and social growth of developed countries, analyzing the entrepreneurial process and the factors affecting the management of the fear of failure in entrepreneurship would contribute to the successful advancement of e MoreRegarding the role of entrepreneurship in the economic and social growth of developed countries, analyzing the entrepreneurial process and the factors affecting the management of the fear of failure in entrepreneurship would contribute to the successful advancement of entrepreneurship, creating new job opportunities and exiting the single-product economic situation. The main goal of this research is to modelling the factors influencing the management of the fear of entrepreneurial failure in Iranian start-up businesses, by determining their effectiveness. Based on this, the research method of this research is applied in terms of purpose and mixed-exploratory in terms of information gathering. This research has two qualitative parts to identify the factors affecting the management of the fear of entrepreneurial failure and a quantitative part to determine the effectiveness of the factors. Sampling method in both quantitative and qualitative sections done purposefully and using snowball method. In the qualitative part, first, a semi-structured interview with 10 experts used to identify the factors influencing the management of the fear of failure in entrepreneurship in the quantitative analysis part of the DEMATEL method. For this purpose, DEMATEL questionnaire given to 12 experts and using DEMATEL modeling, the effect of factors was calculated. The research results show 7 important and effective factors in managing the fear of entrepreneurial failure of Iranian start-up businesses. Among these factors, legal factors were the most influential variables and personal and personality factors were the most influential variables. Manuscript profile -
Open Access Article
10 - The study of associated factors of marital discord among couples referred to the Family Court in 1391MeshkinShahr
Davood Ebrahimpour Firooz Rad Feridoon TagipoorThis search is to study the associated factors of marital discord among couples referred to the family court of MeshkinShahr in 1391. In this search population of 280 people have been chosen among 900 sample using Cochran's formula and the research method is survey. The MoreThis search is to study the associated factors of marital discord among couples referred to the family court of MeshkinShahr in 1391. In this search population of 280 people have been chosen among 900 sample using Cochran's formula and the research method is survey. The data were gathered through questionnaire and theories of functionalism, homogamy, heterogamy, network and exchange were used. To measure the variables Pearson correlation coefficient, ANOVA and t-test were used. On the basis of research findings, there is a positive correlation between marital discord and couple's failure in life, other's intervention in couple's life, couple's class differences, couple's opinion differences, the degree of couple's religiosity and couple's age differences. The marital discord in terms of family income, education and occupation levels of couples were not different, but it is different in terms of couple's addiction Manuscript profile -
Open Access Article
11 - A New Estimation Method of Parallel Power Transformers Expected Failure Cost
Hadi Shams solari Behroz Majidi Majid MoazzamiRisk level evaluation of power systems and reduction of its related destructive effects costs have been transformed to one of the basic challenges in power industry’s operation and scheduling. In this paper a new method for mathematical modeling of failure correla MoreRisk level evaluation of power systems and reduction of its related destructive effects costs have been transformed to one of the basic challenges in power industry’s operation and scheduling. In this paper a new method for mathematical modeling of failure correlation of parallel transformers using Poisson process and multi-Gaussian Copula function is presented. In this method, by using computation of selected reliability indices and related costs, a modeling method for estimation of expectation value of failure cost of parallel transformers with failure correlation and also cost of annual risk of power system has been proposed. According to the capability of production of stage-gate process of the system real mode and failure correlation and probability of parallel transformers, sequential Monte Carlo method for calculation of system’s reliability indices and related costs estimation has been employed. Simulation results of the proposed method show that annual increase of failure correlation probability of parallel transformers in power stations, will lead to increase of expectation value of their failure, level and cost of power system’s risk. Manuscript profile -
Open Access Article
12 - Designing a Model to Determine the Reliability and Ranking of Suppliers of Electronic Components Based on the Failure Rate
Mehdi Latifi Morteza ShafieeChoosing the right suppliers is the basis of a successful supply chain and a key factor for improving competitiveness. Therefore, the purpose of the present study is to investigate the quality and failure rate of the parts that provided by the suppliers. In doing so,&nb MoreChoosing the right suppliers is the basis of a successful supply chain and a key factor for improving competitiveness. Therefore, the purpose of the present study is to investigate the quality and failure rate of the parts that provided by the suppliers. In doing so, the evaluation approach based on the failure rate was used and the reliability of the suppliers was determined and their ranking was done. As a result, the research method used is applied in nature and its method is contextual-case. Moreover, for the purpose of a case study, the suppliers of seven separate supply chains of an electrical appliance manufacturing company in Shiraz were examined that each of the chains included eight suppliers. Besides, in order to evaluate and establish the supplier's reliability model based on the failure rate, a parallel system was used. Finally, by calculating the reliability, the failure rate of the supplier's manufactured product was obtained. The results showed that this failure rate is a suitable criterion for comparing the output quality or the products of suppliers. Thus, it is possible to rate the suppliers based on this obtained model. Manuscript profile -
Open Access Article
13 - Analyzing the Knowledge Structure of the Success and Failure Factors of Megaprojects
Jafar Gheidar-Kheljani Pedram JahediMegaproject is a term used to distinguish strategic projects from normal projects. The super project requires the allocation of many resources and has transformative consequences. Much research has been done to identify the success and failure factors of megaprojects. T MoreMegaproject is a term used to distinguish strategic projects from normal projects. The super project requires the allocation of many resources and has transformative consequences. Much research has been done to identify the success and failure factors of megaprojects. This research aims to analyze the knowledge structure of the success and failure factors of megaprojects. Research is practical in terms of purpose. The statistical population of the indexed content research related to the success and failure factors of megaprojects in science websites, the judgmental sampling method, and the sample size are 3728. The method of research data analysis includes the analysis of the structure of the context and the analysis of the content structure. Contextual structure analysis includes the steps of cataloging, sorting, illustrating, and contextual data analysis, and content structure analysis includes two steps of data extraction and coding. The analysis of the texture structure confirms the upward trend of indexing, the dominant flow of introducing a country as a megaproject platform, and the greater contribution of indexing to the field of project management. Analysis of the content structure has identified 277 codes, 177 concepts, 101 subcategories, 69 categories, and 9 dimensions. These dimensions include the success and failure of megaprojects, context, domain, super project teams, super project life cycle, investment, environment, involved parties, and social factors. The theoretical dispersion in the selection of vocabulary indicates the need for convergence in the selection of vocabulary and the necessity of identifying theoretical frameworks from the indexed content related to the success and failure of megaprojects. Manuscript profile -
Open Access Article
14 - Using a new warranty policy to define optimum values for burn-in and warranty periods
Ehsan MoghimiHadji -
Open Access Article
15 - Analysis of Mean Time to System Failure and Availability of a System with Cold Standby Unit
Muktar Umar Danjuma Bashir Yusuf U.A. Ali -
Open Access Article
16 - A DMAIC approach for process capability improvement an engine crankshaft manufacturing process
G. V. S. S. Sharma P. Srinivasa Rao -
Open Access Article
17 - Qualitative and quantitative approaches to analyse reliability of a mechatronic system: a case
Rajiv Kumar Sharma Pooja Sharma -
Open Access Article
18 - (m, M) Machining system with two unreliable servers, mixed spares and common-cause failure
Madhu Jain Ragini Mittal Rekha Kumari -
Open Access Article
19 - Monitoring the censored lognormal reliability data in a three-stage process using AFT model
Azam Goodarzi Amirhossein Amiri Shervin Asadzadeh -
Open Access Article
20 - MTBF evaluation for 2-out-of-3 redundant repairable systems with common cause and cascade failures considering fuzzy rates for failures and repair: a case study of a centrifugal water pumping system
Seyed Mohammad Mortazavi Maryam Mohamadi Javid Jouzdani -
Open Access Article
21 - Process capability improvement through DMAIC for aluminum alloy wheel machining
G. V. S . S. Sharma P. Srinivasa Rao B. Surendra Babu -
Open Access Article
22 - Dynamic cellular manufacturing system considering machine failure and workload balance
Masoud Rabbani Hamed Farrokhi-Asl Mohammad Ravanbakhsh -
Open Access Article
23 - Investigation and Determination of Health Risks of Chrome Heavy Metal in the Wastewater of Firooz Abad River of Tehran Using the Method of Analyzing Fracture States and Its Effects on Environment (EFMEA)
S. A. Jozi H. Kabiri Fard S. Shakouri A. Ahmadi MajdThis study was conducted with the goal of investigating the amount of Chrome heavy metal in Firouz Abad river of Tehran. For this purpose, sampling from water was conducted by determining 5 measurement stations in the river path in the spring, summer and autumn of 2007. MoreThis study was conducted with the goal of investigating the amount of Chrome heavy metal in Firouz Abad river of Tehran. For this purpose, sampling from water was conducted by determining 5 measurement stations in the river path in the spring, summer and autumn of 2007. Analysis of samples was performed using Atomic Absorption method. The results of this study show that the levels of chrome metal measured in the third, fourth and fifth stations with the averages of 0.503mg/l, 1.29mg/l and 2.62mg/l, respectively are above the allowed level of chrome in the run-off determined by Environment Preservation Organization (0.5mg/l). In order to estimate the level of environmental risks of chrome in the environment of the affected area, the Environmental Failure Modes and Effects Analysis and its effects on environment was used. For this purpose, a table was first designed based on each station in which chrome concentration was graded within the scores span of 1 to 50 from the respects of risks severity and possible consequences. Then, Risk Priority Number (RPN) was calculated for each station from the product of risks severity in possible consequence. In the stations in which the level of chrome heavy metal was above the standard level, some measures were suggested for minimizing RPN. In this study, the level of environmental risks of this metal was estimated in 5 stations based on RPN as follows: RPN of first station = 2 < RPN of second station = 10 < RPN of thied station = 30 < RPN of forth station = 200 < RPN of fifth station = 450 Due to irrigation of agricultural lands by this river especially vegetable farming and growing summer crops in south of Tehran, the excess concentration of chrome has increased significant absorption of the aforesaid heavy metal in plants which its consequence is the entrance of this metal to food chain and its bad effects on human. Manuscript profile -
Open Access Article
24 - Risk Identification and Analysis Based on the Integrated Approach of PMBOK and RFMEA in Petrochemical Industry Projects
Masoud Najmi Hasan Mehrmanesh Nosratollah ShadnoushNowadays, as projects become more complex, uncertainty in the implementation of projects also increases. Project risk includes threats to project goals. Risk management is one of the main parts of strategic management of any project and includes processes through which MoreNowadays, as projects become more complex, uncertainty in the implementation of projects also increases. Project risk includes threats to project goals. Risk management is one of the main parts of strategic management of any project and includes processes through which risks related to activities can be identified methodically. The main purpose of this study is to identify and analyze risk, using the integrated approach of PMBOK and RFMEA methods in petrochemical industry projects. The statistical population consists of employer, contract management, engineering consultant, and contractors of the Kermanshah petrochemical industries company. Of whom 10 were selected for the qualitative part and 248 were selected for the quantitative part (regression analysis). Questionnaires were handed to the selected population. 220 of which, were filled out and returned acceptably. As a result, a total of 22 risks were identified as critical risks (with RPN of 1) and the role of management, organizational, and environmental factors in risk management was investigated. Manuscript profile -
Open Access Article
25 - The Influence of Overt Hyperthyroidism on the Plasma Level of β- type Natriuretic Peptide
Ruqaya M. Al-sultan Hazim A. Mohammed -
Open Access Article
26 - Comparison of the Effectiveness of Eye Movement Desensitivization and Reprosessing Therapy and Imago Therapy Approaches in Altruism, Difficulty in Regulating Emotion and Failure of every day in People Involved in Emotional Divorce
mahsa haji agha bozorgi adis kraskian Dr. Hamidreza vatankhah mohammadreza seyrafyEmotional divorce means emotional separation and love between the couple, and the relationship between the couple is severed mentally, physically, mentally and even verbally with each other and their life goes cold and complete blackout. The aim of this study was to com MoreEmotional divorce means emotional separation and love between the couple, and the relationship between the couple is severed mentally, physically, mentally and even verbally with each other and their life goes cold and complete blackout. The aim of this study was to compare the Effectiveness of Eye Movement Desensitivization and Reprosessing Therapy and Imago Therapy Approaches in Altruism, Difficulty in Regulating Emotion and Failure of every day in People Involved in Emotional Divorce. The present study was a quasi-experimental study with pre-test, post-test and 3-month follow-up. The statistical population was people involved in emotional divorce who referred to counseling centers in Tehran in 2019. 45 people were selected by purposive sampling, and randomly divided into three groups of 15 people. Each treatment was presented for 11 sessions of 90 minutes per week and the control group was placed on a waiting list. Data collection tools, Demographic Information Sheet, Guttman (1997) Emotional Divorce Scale, Felner's and Ahmadi's Altruistic Behavior inventory (2008) Difficulties in Emotion Regulation Scale .Graz and Roemer (2004) was the "Daily Failure Memory " inventory. In order to analyze the hypotheses, multivariate analysis of covariance and Bonferroni post hoc test with repeated measures were used. The results were analyzed using SPSS statistical software version 26. The results showed that there was no significant difference between the groups in the pretest. But in post-test and follow-up, there was a significant difference between the mean sensitivity to Social adequacy, Altruism, Difficulty in Regulating Emotion and Failure of every day in Eye Movement Desensitivization and Reprosessing Therapy and imago therapy with the mean of the control group at the level of p <0.01. Imago therapy approach in Altruism variable was more effective than all variables in Eye Movement Desensitivization and Reprosessing Therapy approach. The results were stable at the follow-up stage. Manuscript profile