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Open Access Article
1 - Effectiveness of information technology in monitoring and evaluating public service providers and institutions
Ehsan AbediniThis study was aimed to evaluate the effectiveness of information technology in monitoring and evaluating public service providers and institutions in order to extract managerial knowledge. This research is a descriptive survey. Data collection tool was a questionnaire MoreThis study was aimed to evaluate the effectiveness of information technology in monitoring and evaluating public service providers and institutions in order to extract managerial knowledge. This research is a descriptive survey. Data collection tool was a questionnaire including demographic information and questions about measuring variables. The statistical population of the present study consisted of employees of executive agencies located in Mazandaran province. The sample size was obtained using the Cochran formula, 346 people. The sampling method is simple random. Data were collected and classified by SPSS V. 21 and LISREL 8.8 software. The results of this study showed that speed, accuracy, reliability and ease of use of information technology have a significant effect on the monitoring and evaluation of services and facilities (p <0.001). In fact, rapid access to information, accelerated data processing, information provision through automation, and information security can lead to better monitoring and evaluation of service providers and institutions. Manuscript profile -
Open Access Article
2 - A New Architecture for Intrusion-Tolerant Web Services Based on Design Diversity Techniques
Sadegh Bejani Mohammad Abdollahi AzgomiWeb services are the realization of service-oriented architecture (SOA). Security is an important challenge of SOAP-based Web services. So far, several security techniques and standards based on traditional security mechanisms, such as encryption and digital signature, MoreWeb services are the realization of service-oriented architecture (SOA). Security is an important challenge of SOAP-based Web services. So far, several security techniques and standards based on traditional security mechanisms, such as encryption and digital signature, have been proposed to enhance the security of Web services. The aim has been to employ the concepts and techniques of fault-tolerant computing to make Web services more secure, which is called intrusion-tolerance. Intrusion-tolerance means the continuous delivery of services in presence of security attacks, which can be used as a fundamental approach for enhancing the security of Web services. In this paper, we propose a novel architecture for intrusion-tolerant Web services with emphasis on intrusion-tolerance concepts and composite Web service techniques. The proposed architecture, which is called design-diverse intrusion-tolerant Web service (DDITWS), takes the advantages of design diversity techniques. For Web service composition, BPEL4WS is used. Formal modeling and verification of the proposed architecture is performed using colored Petri nets (CPNs) and CPN Tools. We have checked the behavioral properties of the model to ensure its correctness. The reliability and security evaluation of the proposed architecture is also performed using a stochastic Petri net (SPN) model and the SHARPE tool. The results show that the reliability and mean-time-to-security-failure (MTTSF) in the proposed architecture are improved. Manuscript profile -
Open Access Article
3 - A New Approach to the Quantitative Measurement of Software Reliability
Abbas RasoolzadeganNowadays software systems have very important role in a lot of sensitive and critical applications. Sometimes a small error in software could cause financial or even health loss in critical applications. So reliability assurance as a nun-functional requirement, is very MoreNowadays software systems have very important role in a lot of sensitive and critical applications. Sometimes a small error in software could cause financial or even health loss in critical applications. So reliability assurance as a nun-functional requirement, is very vital.One of the key tasks to ensure error-free operation of the software, is to have a quantitative measurement of the software reliability.Software reliability engineering is defined as the quantitative study of the operational behavior of software systems with respect to user requirements concerning reliability. Software Reliability is defined as the probability of failure-free software operation for a specified period of time in a specified environment. Quantifying software reliability is increasingly becoming necessary. We have recently proposed a new approach (referred to as SDAFlex&Rel) to the development of «reliable yet flexible» software. In this paper, we first present the definitions of a set of key terms that are necessary to communicate with the scope and contributions of this work. Based on the fact that software reliability is directly proportional to the reliability of the development approach used, in this paper, a new approach is proposed to quantitatively measure the reliability of the software developed using SDAFlex&Rel, thereby making precise informal claims on the reliability improvement. The quantitative results confirm the reliability improvement that is informally promised by SDAFlex&Rel. Manuscript profile -
Open Access Article
4 - Toward an Enhanced Dynamic VM Consolidation Approach for Cloud Datacenters Using Continuous Time Markov Chain
Monireh Hosseini Sayadnavard Abolfazl Toroghi HaghighatDynamic Virtual Machine (VM) consolidation is an effective manner to reduce energy consumption and balance the resource load of physical machines (PMs) in cloud data centers that guarantees efficient power consumption while maintaining the quality of service requirement MoreDynamic Virtual Machine (VM) consolidation is an effective manner to reduce energy consumption and balance the resource load of physical machines (PMs) in cloud data centers that guarantees efficient power consumption while maintaining the quality of service requirements. Reducing the number of active PMs using VM live migration leads to prevent inefficient usage of resources. However, high frequency of VM consolidation has a negative effect on the system reliability and we need to deal with the trade-off between energy consumption and system reliability. In recent years many research work has been done to optimize energy management using power management techniques. Although these methods are very efficient from the point of view of energy management, but they ignore the negative impact on the system reliability. In this paper, a novel approach is proposed to achieve a reliable VM consolidation method. In this way, a Markov chain model is designed to determine the reliability of PMs and then it has been prioritized PMs based on their CPU utilization level and reliability status. Two algorithms are presented to determining source and destination servers. The efficiency of our proposed approach is validated by conducting extensive simulations. The results of the evaluation clearly show that the proposed approach significantly improve energy consumption while avoiding the inefficient VM migrations. Manuscript profile -
Open Access Article
5 - Reliable resource allocation and fault tolerance in mobile cloud computing
Zahra Najafabadi Samani Mohammad Reza Khayyam BashiBy switching the computational load from mobile devices to the cloud, Mobile Cloud Computing (MCC) allows mobile devices to offer a wider range of functionalities. There are several issues in using mobile devices as resource providers, including unstable wireless connec MoreBy switching the computational load from mobile devices to the cloud, Mobile Cloud Computing (MCC) allows mobile devices to offer a wider range of functionalities. There are several issues in using mobile devices as resource providers, including unstable wireless connections, limited energy capacity, and frequent location changes. Fault tolerance and reliable resource allocation are among the challenges encountered by mobile service providers in MCC. In this paper, a new reliable resource allocation and fault tolerance mechanism is proposed in order to apply a fully distributed resource allocation algorithm without exploiting any central component. The objective is to improve the reliability of mobile resources. The proposed approach involves two steps: (1) Predicting device status by gathering contextual information and applying TOPSIS to prevent faults caused by volatility of mobile devices, and (2) Adapting replication and checkpointing methods to fault tolerance. A context-aware reliable offloading middleware is developed to collect contextual information and manage the offloading process. To evaluate the proposed method, several experiments are run in a real environment. The results indicate improvements in success rates, completion time, and energy consumption for tasks with high computational load Manuscript profile -
Open Access Article
6 - Cost Benefit Analysis of Three Non-Identical Machine Model with Priority in Operation and Repair
Nafeesa Bashir Raeesa Bashir JP Singh Joorel Tariq Rashid Jan JanThe paper proposes a new real life model and the main aim is to examine the cost benefit analysis of Textile Industry model subject to different failure and repair strategies. The reliability model comprises of three units i,e Spinning machine (S), Weaving machine (W), MoreThe paper proposes a new real life model and the main aim is to examine the cost benefit analysis of Textile Industry model subject to different failure and repair strategies. The reliability model comprises of three units i,e Spinning machine (S), Weaving machine (W), Colouring and Finishing machine(Cf). The working principal of the model starts with spinning machine (S) where in unit S is in operative state while as weaving machine, Colouring and Finishing machine are in ideal state. Complete failure of system is observed when all three units of system i.e. S,W and Cf are in down state. Repairperson is always available to carry out the repair activities in the system in which first priority in repair is given to Colouring and Finishing machine followed by Spinning and weaving machine. The proposed model attempts to maximize the reliability of a real life system. Reliability measures such as Mean Sojourn time, Mean time to system failure, Profit analysis of system are examined to define the performance of the reliability characteristics. For concluding the study of such model, different stochastic measures are analyzed in steady state using regenerative point technique. The tables are prepared for arbitrary values of the parameters to show the performance of some important reliability measures and to check the efficiency of the model under such situations. Manuscript profile -
Open Access Article
7 - Study Validity and Reliability of Digital Citizenship Scale in Birjand City
Sadegh Hamedinasab Someyyeh BakhshiparikhaniDue to the growing number of new media, the number of digital citizens in society is increasing day by day. A digital citizen is a citizen who has the ability to use the online services provided by the government of each country to the best of his ability. The purpose o MoreDue to the growing number of new media, the number of digital citizens in society is increasing day by day. A digital citizen is a citizen who has the ability to use the online services provided by the government of each country to the best of his ability. The purpose of this study was to investigate the validity and reliability of digital citizenship scale in Birjand city. The statistical population of this study was all individuals aged 18 years and older in Birjand city, of which 384 were selected by multi-stage cluster sampling. The instrument used in this research is a digital citizen questionnaire, Chui, Glassman and Kristol (2017). Content validity of the Persian version was verified according to the opinion of the experts. Factor structure of digital citizenship questionnaire was investigated using both exploratory factor analysis and confirmatory factor analysis. The exploratory factor analysis showed that 4 substances have high yields in more than one factor; these materials were eliminated, and finally the final model included four factors; Internet political activity, technological skills, critical and local-global awareness. It came out with 22 substances. For reliability of this tool, Cronbach's alpha coefficient was used, which coefficient for its components was 0.79- 0.99. Given that the validity and reliability indicators of the Persian version of the Digital Citizen scale were all favorable, it can be used as a valid and reliable tool to identify digital citizens. Manuscript profile -
Open Access Article
8 - Development of an International Scale of Religiosity: A Cross Cultural Approach
Mohammad KhodayarifardThe objective of this study was to prepare religiosity scale based on commonalities of Abrahamic religions (Judaism, .Christianity, and Islam) in order to provide a instrument for intercultural studiesThe objective of this study was to prepare religiosity scale based on commonalities of Abrahamic religions (Judaism, .Christianity, and Islam) in order to provide a instrument for intercultural studies Manuscript profile -
Open Access Article
9 - Psychometric Properties of the Profile of Emotional Competence: A Pilot Study
Negin Bakhshi Farideh YousefiAbstract The present study aimed to examine the validity, reliability and factor structure of the Profile of Emotional Competence (PEC) among Iranian students. To this end 518 high school female students were selected in 2019 academic year using cluster sampling metho MoreAbstract The present study aimed to examine the validity, reliability and factor structure of the Profile of Emotional Competence (PEC) among Iranian students. To this end 518 high school female students were selected in 2019 academic year using cluster sampling method and they completed the profile of emotional competence (Brasseur, Grégoire, Bourdu, & Mikolajczak, 2013), cultural competence Questionnaire (Central Vancouver Island Multicultural Society, 2007), and satisfaction with life scale (Diener, Emmons, Larsen, & Griffin, 1985). To investigate validity, confirmatory factor analysis and convergent validity were used. The findings of confirmatory factor analysis confirmed two-factor structure of the questionnaire and yielded two factors named as intra emotional competence and inter emotional competence. The correlation coefficients of the questionnaire scores with life satisfaction and cultural competence were 0.30 and 0.90 respectively. These results showed the convergent validity of the scale. To assess the reliability the questionnaire, Cronbach’s alpha was used. The Cronbach’s alpha coefficient was in satisfactory level for each factor (α = 0.80 for intra emotional competence, and α = 0.78 for inter emotional competence), and the total score of the scale (α = 0.92). The findings suggest that the profile of emotional competence is a reliable and valid instrument for assessing emotional competence of Iranian high school students and can be used as a suitable instrument in psychological research. Manuscript profile -
Open Access Article
10 - Psychometric Properties of the Profile of Emotional Competence
Negin Bakhshi Farideh YousefiThe present study aimed at examining the validity, reliability, and the factor structure of the Profile of Emotional Competence (PEC) among Iranian students. To this end, 518 high school female students were selected in the 2019 academic year using cluster sampling meth MoreThe present study aimed at examining the validity, reliability, and the factor structure of the Profile of Emotional Competence (PEC) among Iranian students. To this end, 518 high school female students were selected in the 2019 academic year using cluster sampling method, and they completed the Profile of Emotional Competence (Brasseur, Grégoire, Bourdu, & Mikolajczak, 2013), Cultural Competence Questionnaire (Central Vancouver Island Multicultural Society, 2007), and Satisfaction with Life Scale (Diener, Emmons, Larsen, & Griffin, 1985). To investigate the validity, the confirmatory factor analysis, and the convergent validity were used. The findings of confirmatory factor analysis confirmed a two-factor structure of the questionnaire and yielded two factors named as intra emotional competence and inter emotional competence. The correlation coefficients of the questionnaire scores with life satisfaction and cultural competence were 0.30 and 0.52 respectively. These results showed the convergent validity of the scale. To assess the reliability of the questionnaire, Cronbach’s alpha was used. The Cronbach’s alpha coefficient was in satisfactory level for each factor (α = 0.78 for intra emotional competence, and α = 0.80 for inter emotional competence), and the total score of the scale (α = 0.92). The findings suggest that the profile of emotional competence is a reliable and valid instrument for assessing emotional competence for Iranian high school students and can be used as a suitable instrument in psychological research. Manuscript profile -
Open Access Article
11 - The psychometric properties of the quality of life questionnaire related to the health of Iranian adolescents with congenital heart disease
hassan erami hamidreza hassanabadi robabe noury Alireza Moradi Kourosh VahidshahiThe aim of this study was to determine the psychometric properties of the quality of life questionnaire related to the health of Iranian adolescents with congenital heart disease. Participants were 180 adolescents aged 13 to 18 years with congenital heart disease and th MoreThe aim of this study was to determine the psychometric properties of the quality of life questionnaire related to the health of Iranian adolescents with congenital heart disease. Participants were 180 adolescents aged 13 to 18 years with congenital heart disease and their parents who referred to Shahid Rajaei Heart Hospital. Instruments were health-related quality of life questionnaire (PedsQL™) and general version quality of life questionnaire (PedsQL™) and general anxiety section of CSI-4 questionnaire. Factor analysis, Cronbach's alpha and Pearson correlation were used to analyze the data to evaluate the validity and reliability of the questionnaire. The findings of factor analysis indicated 7 factors in the Adolescent Questionnaire and the Proxy Report Questionnaire. The Adolescent and Proxy Health Quality of Life Questionnaires have an acceptable validity in Iranian society and can be used to assess their quality of life. Manuscript profile -
Open Access Article
12 - Investigating the psychometric properties of the Persian version of the six-factor model of achievement goals questionnaire in the students of the junior and senior high schools
Mohsen Arbezi Mahboubeh FouladchangThe aim of the present study was to investigate the psychometric properties of the six-factor model of achievement goals questionnaire (Elliot et al., 2011) in the students of the junior and senior high schools. In order to investigate the validity and reliability of th MoreThe aim of the present study was to investigate the psychometric properties of the six-factor model of achievement goals questionnaire (Elliot et al., 2011) in the students of the junior and senior high schools. In order to investigate the validity and reliability of the achievement goals questionnaire in the junior high school students, 279 students in Evaz city (in the south of Fars province) who were studying in the academic year of 2020-2021, were selected by convenience sampling method and responded to the electronic version of the questionnaires of achievement goals (Elliot et al., 2011) and intrinsic motivation (Choi et al., 2010). Also, in order to investigate the validity and reliability of this questionnaire in the second group, 420 students were selected in the same city and academic year using the convenience sampling method and responded to the electronic version of the questionnaires of achievement goals (Elliot et al., 2011), academic self-regulation (Pintrich & DeGroot, 1990) and academic engagement (Reeve, 2013). Data were analyzed using SPSS-16 and AMOS-21 statistical software. The content, construct and convergent validity of the mentioned questionnaire were investigated using the opinion of educational psychology experts, confirmatory factor analysis and correlation coefficients of the component scores with related variables. Cronbach's alpha coefficient was used to investigate the reliability of the questionnaire. Experts confirmed the representativeness of the questionnaire items to measure the achievement goals in the six-factor model presented by Elliot et al. (2011). The achievement goals model test includes the components of task-approach, task-avoidance, self-approach, self-avoidance, other-approach, and other-avoidance, confirming the six-factor structure of this questionnaire according to the primary research. Also, the logical connection between the components of achievement goals with related variables indicates the convergent validity of this questionnaire. In addition, Cronbach's alpha coefficient confirms the reliability of the questionnaire. In total, the findings of the research show that the Persian version of the mentioned questionnaire is one of the suitable psychometric indicators for measuring the six components of achievement goals in two groups of students of the junior high school and senior high school students; And it has the necessary efficiency to measure the mentioned achievement goals. Manuscript profile -
Open Access Article
13 - The Investigating the Factor Structure and Psychometric Characteristics of Extramarital Affairs Proneness Scale in Females
Nasim Zafargholizadeh Ali khademi Reza Tasbihsazan-MashhadiThe purpose of the present study was to investigate the Factor Structure and Psychometric Characteristics of Extramarital Affairs Proneness Scale in females. This research have done using mixed-method in two qualitative and quantitative sections. In the qualitative sect MoreThe purpose of the present study was to investigate the Factor Structure and Psychometric Characteristics of Extramarital Affairs Proneness Scale in females. This research have done using mixed-method in two qualitative and quantitative sections. In the qualitative section of the research, expert interviews included 7 experts on family and Couples therapy were conducted using structured interviews and semi -structured interviews that led to the extraction of primary indicators.The method of research in the quantitative part was descriptive –correlation. The statistical population included married females in Urmia in 2017, and 1000 of these females were selected by available sampling. The tools of the present study were Extramarital Affairs Proneness Scale (EAPS) and Marital Happiness Scale (MHS). Exploratory and confirmatory factor analysis were used to analyze the data. Based on exploratory factor analysis, five factors were identified: Family Properties, media, Sexual behavior style, Personality Traits and cognitive. Overall, the extracted factors accounted for 51/56% of the total variance of the test. Content validity, Structural validity and confirmatory factor analysis were used to determine the validity. Fit indices in confirmatory factor analysis model, confirmed validity of this attitude scale. Its reliability through the Cronbach’s alpha coefficient was 0.88 obtained. Based on the findings Extramarital Affairs Proneness Scale is a valid and reliable tool and can be used in clinical and research situations. Manuscript profile -
Open Access Article
14 - Build, reliability and validation of Knowledge Management questionnaire based on the model of Nonaka and Take Uchi in Payam Noor University
abbas abbas por mohamad reza nili ahmad abadi esmat momeni Farhad KianfarThe purpose of this study was to construct reliability and validity of Knowledge management questionnaire scale among faculty members of Payam Noor University. In this research, due to the wide extent of the statistical society of this university and the uniformity of t MoreThe purpose of this study was to construct reliability and validity of Knowledge management questionnaire scale among faculty members of Payam Noor University. In this research, due to the wide extent of the statistical society of this university and the uniformity of the organizational and educational structure of this university in the country, the faculty members of the centers and units of Payam Noor University of Khuzestan province in the academic year of 2016-2017 were selected as the statistical population of this research. Was studied in this research, a scale has been prepared based on the Knowledge Management Model of Nonaka and Take uchi, which evaluates the status of knowledge levels and its conversion processes. This scale was distributed electronically and in a presence among 171 faculty members of 31 centers and Payam Noor University of Khuzestan province. Cronbach's alpha coefficients were used to measure the reliability of the scale and its value was 0.84 for the whole scale. The factual and content validity of the scale was confirmed by 5 experienced experts. In order to assess the construct validity, factor analysis was also performed using principal components along with Varimax rotation. The extent of the explanation of the variance of variables for the eight factors extracted is 66/77 of the total variable variance. Also, the other results of the study and the construction of the current questionnaire are that the questionnaire is prepared in such a way that it can identify the centers of knowledge production and how to distribute information and knowledge in the target society. In fact, questionnaire questions can set the ideal, purpose, and ideal of an organization in such a way that the organization can achieve its purpose according to their implementation. Manuscript profile -
Open Access Article
15 - Provide a multi-objective mathematical programming model for supplier selection in discounted status
Abbas Shoul ali yaghoubipoor laleh abbasloIn the present study, the supplier selection problem from a new perspective is formulated and solved. For this purpose, minimizing cost and minimizing delivery time and maximizing reliability are considered as objectives of the problem. The purchasing cost in discounted MoreIn the present study, the supplier selection problem from a new perspective is formulated and solved. For this purpose, minimizing cost and minimizing delivery time and maximizing reliability are considered as objectives of the problem. The purchasing cost in discounted status, the order cost, the transportation cost, the shortage cost and the carrying cost, the components forming the cost objective function. In this research, the design of reliability in parallel systems is benchmarked for supplier selection, so that the supplier's set is considered as a system and each supplier as a component. After mathematical modeling of the problem, the objective functions are described as fuzzy goals and a fuzzy decision approach has been used to rewrite the proposed three-objective model as a single-objective model. The production of a final solution rather than a set of Pareto's solutions is one of the advantages of the proposed method, which prevents decision-making confusion. In order to describe the function and potential application of the proposed method, the supplier selection problem with the actual data was solved. Manuscript profile -
Open Access Article
16 - Cache Point Selection and Transmissions Reduction using LSTM Neural Network
Malihe Bahekmat Mohammad Hossein Yaghmaee MoghaddamReliability of data transmission in wireless sensor networks (WSN) is very important in the case of high lost packet rate due to link problems or buffer congestion. In this regard, mechanisms such as middle cache points and congestion control can improve the performance MoreReliability of data transmission in wireless sensor networks (WSN) is very important in the case of high lost packet rate due to link problems or buffer congestion. In this regard, mechanisms such as middle cache points and congestion control can improve the performance of the reliability of transmission protocols when the packet is lost. On the other hand, the issue of energy consumption in this type of networks has become an important parameter in their reliability. In this paper, considering the energy constraints in the sensor nodes and the direct relationship between energy consumption and the number of transmissions made by the nodes, the system tries to reduce the number of transmissions needed to send a packet from source to destination as much as possible by optimal selection of the cache points and packet caching. In order to select the best cache points, the information extracted from the network behavior analysis by deep learning algorithm has been used. In the training phase, long-short term memory (LSTM) capabilities as an example of recurrent neural network (RNN) deep learning networks to learn network conditions. The results show that the proposed method works better in examining the evaluation criteria of transmission costs, end-to-end delays, cache use and throughput. Manuscript profile -
Open Access Article
17 - Economic Evaluation for Independent Network with Inner Control Consist of Distributed Generation
A. KhandaniIn this paper, four scenarios of energy supply for consumers are compared using the proposed objective function and the most appropriate energy methods have been identified. Four energy scenarios are: energy only by the network, the networks and distributed resources, m MoreIn this paper, four scenarios of energy supply for consumers are compared using the proposed objective function and the most appropriate energy methods have been identified. Four energy scenarios are: energy only by the network, the networks and distributed resources, micro-grid systems only and micro grid connected to the upstream network. The objective function for these energy scenarios are calculated and compared for two different load connections, all loads on one feeder and each load on individual feeders. Proposed objective function for each scenario consists of two dimensions, cost and reliability. Cost dimension includes constant cost, current cost and reliability dimension includes non delivered energy for consumers. After conversion into one dimension, the objective function is solved using linear programming. The proposed method in this paper compared with similar methods and these results demonstrate that the method in this paper is more efficient and practical. Manuscript profile -
Open Access Article
18 - Reliability Insurance Contract as a New Method for Reliability Adjustment in Electrical Distribution Network
S. M. AbediSeveral regulation schemes such as Rate of Return (ROR) and Price Cap (PC) lack incentives for efficient investment. ROR lead to overinvestment and PC on the other hand lead to underinvestment. Regulator employs various forms of reward/penalty schemes (RPS) to cover inh MoreSeveral regulation schemes such as Rate of Return (ROR) and Price Cap (PC) lack incentives for efficient investment. ROR lead to overinvestment and PC on the other hand lead to underinvestment. Regulator employs various forms of reward/penalty schemes (RPS) to cover inherent weaknesses in PC. Adding RPS allow utilities to make cost effective reliability improvements in response to changes in technology and costs but since this schemes result in consumers purchasing reliability and delivery as a single, optimal level of investment can’t be insured. To solve this problem, in the recent year, the Reliability Insurance Scheme (RIS) has been introduced which through it the reliability and delivery services are unbundled and so the efficient investment is insured. In this paper, firstly, the investment structure under RIS is compared to that of traditional regulatory schemes and, according to this comparison; the advantages of RIS are illustrated. In the second step, under RIS, the effects of free-riding and investment delay on the investment dynamics are evaluated and finally the centralized method for alleviating these effects is proposed. Manuscript profile -
Open Access Article
19 - Insurance Contract for the Transfer of Electrical Energy, an Incentive Method to Improve the Reliability
A. Khandani A. Akbari ForodIn competitive electricity market, maximizing the profit is the main objective in company’s decision making. Hence, Transmission companies (Trans Cos) are not interested in improving reliability and expanding existing structures without financial benefits. On the other MoreIn competitive electricity market, maximizing the profit is the main objective in company’s decision making. Hence, Transmission companies (Trans Cos) are not interested in improving reliability and expanding existing structures without financial benefits. On the other hand, consumers demand more reliable and high quality power. In this paper, transmission insurance plan is proposed as an incentive method to improve the reliability of electrical power transmission. In this method, an insurance contract concluded between insurance company and every customer. Insurance company spend a part of its revenue to increases the reliability of the transmission system and also pays for compensation of consumers not supplied energies. The proposed method is studied in a network with six buses. Results show that the proposed method increases network reliability. Manuscript profile -
Open Access Article
20 - Composite Power System Reliability Modeling, Evaluation and Reliability-Based Analysis by Bayesian Networks
M. Eliassi H. SeifiBayesian Networks (BNs) as a strong framework for handling probabilistic events have been successfully applied in a variety of real-world problems, but they have received little attention in the area of composite power systems reliability assessment. Reliability assessm MoreBayesian Networks (BNs) as a strong framework for handling probabilistic events have been successfully applied in a variety of real-world problems, but they have received little attention in the area of composite power systems reliability assessment. Reliability assessment by BN provides some additional capabilities in comparison to conventional methods, both at the modeling and at the analysis levels. At the modeling level, several restrictive assumptions, implicit in the conventional methods, can be removed. At the analysis level, a variety of applicable reliability-based analysis which is hardly achievable in conventional methods, can be conveniently performed. This paper proposes a methodology based on Minimal Cutsets (MCs) to apply BNs to composite power system reliability modeling, reliability assessment and reliability-based analysis. To have a more accurate BN model, a new method of MC determination for composite power system is proposed. Bayesian structure is extracted, based on the determined MCs. Bayesian parameters are defined based on the logical relationships of nodes. To make the proposed method applicable to large composite power systems, virtual nodes are proposed and combined with Bayesian model. Also, a variety of reliability-based analyses are presented which are hardly achievable in conventional methods. The proposed method is validated by applying to RBTS and comparing the results with other reliability analysis methods. The proposed methodology is applied to the Reliability Test System (RTS), to show its feasibility in large networks. Manuscript profile -
Open Access Article
21 - A Fault-Tolerant Routing Algorithm for 3D Networks-on-Chip
M. Taghizadeh Firoozjaee M. Taghizadeh Firoozjaee M. Taghizadeh FiroozjaeeThe performance of Networks-on-Chip is highly dependent to the incorporated routing algorithms. In recent years, many routing algorithms have been proposed for 2D and 3D Networks-on-Chip. In 3D integrated circuits, different devices are stacked through silicon via in wh MoreThe performance of Networks-on-Chip is highly dependent to the incorporated routing algorithms. In recent years, many routing algorithms have been proposed for 2D and 3D Networks-on-Chip. In 3D integrated circuits, different devices are stacked through silicon via in which the vertical connections are vulnerable to manufacturing process variations. Therefore, because of the high impact of faulty links or nodes on the performance of a Network-on-Chip, utilizing a fault-tolerant routing algorithm is of great importance especially for 3D Networks-on-Chip in which the vertical links are more vulnerable. In this paper, a new fault-tolerant routing algorithm called FT-ZXY is proposed to be used in 3D Networks-on-Chip. This routing method is capable of tolerating multiple vertical faulty links in addition to single horizontal faulty links without using any virtual channels thus incurs a very low hardware overhead. Experimental results reveal that the proposed routing algorithm has more reliability compared to the previous designs while incurs less latency and requires lower area and power overheads. Manuscript profile -
Open Access Article
22 - A New Method for Supply Reliability Assessment in Industrial Microgrids Considering Load Growth and Renewable Resources Uncertainty
S. Rahimi Takami R. Hooshmand A. Khodabakhshian A. KhodabakhshianDistributed Generation (DG) resources can effect a lot on the reliability parameters in industrial microgrids. So, reliability evaluation of industrial microgrids is presented in this paper using a proposed composite index in the presence of DG resources and demand resp MoreDistributed Generation (DG) resources can effect a lot on the reliability parameters in industrial microgrids. So, reliability evaluation of industrial microgrids is presented in this paper using a proposed composite index in the presence of DG resources and demand response (DR). This procedure of the reliability assessment is based on sequential Monte Carlo method with respect to the time varying load model. In this paper, wind and photovoltaic generations those are useful renewable generations are used. Since, the output power of these DGs depends on wind speed and solar radiation that are stochastic variables, therefore a number of scenarios have been considered in order to determine the output power per hour for each of them. According to the large number of generated scenarios, scenario reduction method is used based on two conditions that consist of power generation of DGs and load. Here the new composite index represents changes in the SAIFI, SAIDI and EENS indices per each KW of installed DGs. With considering to industrial load growth in the microgrid, a ten-year period is studied and the scheduling is performed in both islanding and grid connected operational modes. The concept of DR is also used in the islanding operational mode. To demonstrate the effectiveness of the proposed method, the approach is applied on a standard IEEE RBTS BUS2 system in the presence of DG resources and the results in different conditions are achieved. Manuscript profile -
Open Access Article
23 - Evaluation of Performance, Reliability and Security for Share-Data, Object-Oriented and Pipe and Filter Styles
H. Banki H. BankiA desirable software application should be able to provide the quality attributes required by the system, as well as the functional requirements. Software architecture styles have a significant effect on the quality attributes of the designed software as well as its spe MoreA desirable software application should be able to provide the quality attributes required by the system, as well as the functional requirements. Software architecture styles have a significant effect on the quality attributes of the designed software as well as its specification and decomposition.) The quantity evaluation and analysis of this effectiveness rate result in the selection of the most appropriate style for designing the architecture. In this paper, a method based on the Colored Petri Net is proposed to quantitatively evaluate three candidate attributes of the software architectural styles called the quality attributes, performance, reliability, and security in three candidate styles named shared-data, object-oriented, and pipe-and-filter software architectural styles. This method has not limitations of the previous-ones in evaluating the quality attributes. In this method, the candidate styles are firstly modeled by using the Colored Petri Net; then, considering the evaluation rules, CPN tools are used to analyze the networks and calculate the exact value of the candidate attributes. At the end, the best candidate style is chosen for implementation through ranking the styles in terms of the satisfaction level of the candidate quality attributes. To present a practical representation using the proposed methodology, the ATM system has been chosen as a case study. Manuscript profile -
Open Access Article
24 - Observable Optimized Selective Hardening of Combinational Circuits against Soft-Error
R. Niaraki Asli H. SalemiDue to the shrinking of feature size, reduction in supply voltage and technology scaling, the sensitivity to radiation induced transient faults of digital systems has dramatically increased. Soft error causes transient distortion in circuit operation and is expected to MoreDue to the shrinking of feature size, reduction in supply voltage and technology scaling, the sensitivity to radiation induced transient faults of digital systems has dramatically increased. Soft error causes transient distortion in circuit operation and is expected to become very important in combinational logic with increment of the circuit frequency. In this paper, we introduce an optimized method for hardening of combinational logic circuits against soft errors. In this method, first we have found the most sensitive nodes of the circuit by observability computations. Next for optimizing power-delay product and area, the reliability of the circuit has been computed and the number of the necessary nodes for hardening will be identified. In the next step, three different hardening methods including time redundancy, Schmitt trigger and transistor feedback have been carried out on standard test circuits as our vehicles. The comparison of three method results show that the hardened circuits with Schmitt trigger have the most cumulative critical charge and the least power-delay product and lead to an optimum hardening. Moreover, the simulation results approve the optimized hardening is obtained from suitable selecting the number of required nodes considering observability concepts and reliability computations together with the best node hardening method. Monte-Carlo simulations also approve the performance of the proposed method against process variations. Manuscript profile -
Open Access Article
25 - Placement of AVRs and Reconfiguration of Distribution Networks Simultaneously and Robust Considering Load Uncertainty
M. R. Shakarami Y. Mohammadi Pour: In this paper, optimal locating for AVRs and reconfiguration of distribution networks were assessed simultaneously as an optimization problem. A new objective function was introducing which incorporated several electrical indices including real power losses, reactive More: In this paper, optimal locating for AVRs and reconfiguration of distribution networks were assessed simultaneously as an optimization problem. A new objective function was introducing which incorporated several electrical indices including real power losses, reactive power losses, reliability, voltage profile, voltage stability, and load capacity of lines (MVA). Various load levels were incorporated into the objective function to make sure that switch status in reconfiguration and AVR taps and locations would be robust against load variations. This paper also introduced a new method for calculating the load levels with respect to load uncertainty. It also considered all loads based on a voltage-dependent model. Several scenarios are defined to thoroughly assess the proposed approach. Integer particle swarm optimization algorithm (IPSO) was used to solve the mentioned optimization problem. The results obtained by the simulation of 33-bus and 69-bus standard IEEE .radial power distribution networks demonstrated the effectiveness of the proposed approach Manuscript profile -
Open Access Article
26 - A Hybrid Method for Transmission Cost Allocation Based on Effect of Transmission Facilities in System Reliability and Merchant Value
Hassan Esmaili علی کریمیWith the advent of electricity markets and the creation of a competitive environment in power systems, proper allocation of transmission cost among network users (consumers and producers) is essential to help the investment of transmission network, effectively. In this MoreWith the advent of electricity markets and the creation of a competitive environment in power systems, proper allocation of transmission cost among network users (consumers and producers) is essential to help the investment of transmission network, effectively. In this paper, a hybrid method for transmission cost allocation based on the effect of transmission facilities in system reliability and their merchant value is proposed. In the proposed method, first, the users' benefit in the electricity market and in other words, the merchant benchmark in cost allocation has considered. Second, cost allocation considering the effect of facilities in system reliability which are consist of factors of system security and adequacy and the benefit of users with these factors is done. For the implementation of the proposed method, the capacity of all facilities includes lines and transformers are divided into four sections consist of merchant capacity, contingency capacity for maintaining security, future capacity for maintaining adequacy and invalid capacity. The numerical results in a 3-bus and the IEEE 30-bus test system are presented to demonstrate the effectiveness of the proposed method and compare to other methods. Manuscript profile -
Open Access Article
27 - Reliability Modeling of PV Farm Using Markov Model
V. Khaligh H. MonsefUtilization of photovoltaic units in power networks and their participation in the power supply has increased in recent years. Total world capacity of PV units has grown exponentially from 1.5 GW in 2000 to about 300 GW in 2016. This paper presents an analytical method MoreUtilization of photovoltaic units in power networks and their participation in the power supply has increased in recent years. Total world capacity of PV units has grown exponentially from 1.5 GW in 2000 to about 300 GW in 2016. This paper presents an analytical method for evaluating the reliability of large photovoltaic farms with regard to the changes in input power and reliability indices of unit components. The proposed method is not only capable of estimating the annual energy production of the photovoltaic units, but also able to calculate the system reliability indices. With Markov approach, Frequency and Duration method is utilized in order to model a photovoltaic farm similar to the multistate conventional units. Probability, frequency and transition rate of each state is obtained using the statistical data of solar radiation as well as operational characteristics of a photovoltaic unit. Due to the large number of solar radiation and PV modules operational states, k-means clustering algorithm is used for data classification. This analytical method is applied to the RBTS to demonstrate the effectiveness of developed approach. Capacity credit using LOLF index, is more than what obtained in the case of LOLE index. This observation can be explained through the variable nature of solar radiation in comparison with conventional units. Hence there is a need to obtain a model which reflects the frequency based reliability indices of PV systems. Manuscript profile -
Open Access Article
28 - Selection of an Optimal Equipment Maintenance Strategy Using an Inspection Maintenance Model
M. Samadi H. SeifiReliability centered maintenance is a tool for managing the maintenance of deteriorating assets. The basis of this method is the identification of failure mode of equipment, deterioration process, and maintenance scheduling to reduce the risk of failure and maintenance MoreReliability centered maintenance is a tool for managing the maintenance of deteriorating assets. The basis of this method is the identification of failure mode of equipment, deterioration process, and maintenance scheduling to reduce the risk of failure and maintenance costs. One of the maintenance methods used in reliability-based maintenance is inspection-based maintenance. In inspection-based maintenance, a decision about the type of maintenance is made after an inspection and determination of the deterioration status of equipment. In this paper, a model for annual maintenance scheduling of network equipment is provided. The scheduling problem is formulated as a probabilistic model with binary variables as inspection times and the optimal maintenance strategy is determined. This model is implemented on a transformer and sensitivity analysis is performed to analyze the effect of inspection and outage cost. Manuscript profile -
Open Access Article
29 - A Task Scheduling and Mapping Approach to Enhance the Main Design Challenges of Multiprocessor Systems on Chip
حمیدرضا زرندیIn this paper, a static task scheduling and mapping heuristic approach to optimize execution time, reliability, power and temperature of multiprocessor systems on chip is presented. This method is proposed based on the list scheduling approach and utilized task replicat MoreIn this paper, a static task scheduling and mapping heuristic approach to optimize execution time, reliability, power and temperature of multiprocessor systems on chip is presented. This method is proposed based on the list scheduling approach and utilized task replication, dynamic voltage and frequency scaling, and adding cooling slacks to improve reliability, power consumption and temperature to expand the design space and explore the solution set more efficiently. Due to the existing trade-offs among the considered parameters and their optimization, the optimization process is complicated and our proposed method is used the Pareto front generation technique. Moreover, our proposed method, models the objectives comprehensively to consider their dependency. Several experiments are performed to demonstrate the performance and capability of the proposed method in joint optimization of the parameters and extracting the proper solution set. Compared to the previous research, our proposed method outperforms them in optimizing the considered design parameters and its results is 19% better averagely than an efficient studied heuristic method. Manuscript profile -
Open Access Article
30 - Comprehensive Optimal Management System of Distributed Resources Using Dynamic Neural Network in Modeling of Electricity Consumption Uncertainty for Grid-Connected Microgrids
Mohammad Veysi محمدرضا سلطانپور jafar Khalilpour hadi niaeiIn this paper, to enhance the optimal planning for power management of micrigrids, a strategy is proposed using power sharing through coordination between microgrids and the neighborhood system, which has no additional costs for generating units. The uncertainty values MoreIn this paper, to enhance the optimal planning for power management of micrigrids, a strategy is proposed using power sharing through coordination between microgrids and the neighborhood system, which has no additional costs for generating units. The uncertainty values of electrical consumers are modeled by dynamic neural network, considering the implementation process and high accuracy of forecasting. In another view, to supply the electrical energy of microgrid, diesel generator, renewable energies such as solar energy and wind energy and so, battery energy storage are used, in addition to the upstream grid connection. As well as, using of the reliability factors, along with a detailed assessment of current costs will improve the performance of microgrid. Hence, the loss of power supply probability (LPSP) and loss of load expectations (LOLE) are expressed as factors for assessing the accuracy of current costs. The proposed model is implemented in GAMS and MATLAB environment and the simulation results clearly demonstrate the desired performance of the proposed algorithm, and leads to gaining revenue for the under-study system. Manuscript profile -
Open Access Article
31 - Presenting a Multi-Criteria QoS-Aware Fault Tolerant Routing Algorithm for Network-On-Chips
Alireza Mahjoub Fatemeh Vardi Roya RadNetwork-on-chip is a router-based paradigm that determines the path of packet passing from the source to destination by a routing pattern through simplified protocols of the public data communication network. Sometimes, it is impossible to send packets from source to de MoreNetwork-on-chip is a router-based paradigm that determines the path of packet passing from the source to destination by a routing pattern through simplified protocols of the public data communication network. Sometimes, it is impossible to send packets from source to destination due to the communication problems caused by network elements in NoC such as routers and faulty links. In most cases, fault-tolerant algorithms select a reliable path using definite criteria. Therefore, in this paper, a reliable path is selected using a multi-criteria decision making technique through an adaptive approach according to the density status received from the adjacent nodes along with the path length so that when a failure occurs, a reliable path with similar QoS features is replaced by rating different paths among network nodes. The weight path selection strategy in NoCs to detect the minimal output port and multi-criteria decision making approach with VIKOR method has improvement over the basic routing algorithm in terms of delay and throughput. The algorithm hardware overhead has a reasonably low cost that maintains scalability for large scale On-Chip networks implementations. Manuscript profile -
Open Access Article
32 - Psychometric Adequacy of Women's Sexual Well-being Scale in Married Women: Validity, Reliability and Factor Structure
reza chalmeh fatemeh abdolahiThe aim of this study was to investigate the validity, reliability and factor structure of the Female Sexual Well-Being Scale in Iranian married women. For this purpose, a sample of 297 married women (with a mean age of 33.7 years and an age range of 24 to 45 years) was MoreThe aim of this study was to investigate the validity, reliability and factor structure of the Female Sexual Well-Being Scale in Iranian married women. For this purpose, a sample of 297 married women (with a mean age of 33.7 years and an age range of 24 to 45 years) was selected by simple random sampling. The Psychological Well-Being Questionnaire (Reef, 1995) and Women's Sexual Well-Being Scale (Rosen et al., 2009) were completed by the sample group. The validity of this scale was assessed using exploratory and confirmatory factor analysis methods, convergent and simultaneous validity. The reliability of the scale was evaluated by two methods of Cronbach's alpha and halving. The results of factor analysis using principal component method and varimax rotation showed that this scale consists of 4 factors with the titles of interpersonal relationships, cognitive-emotional domain, physical stimulation and orgasm satisfaction, which is more than 66% of the variance. They explain the whole. The convergent validity of this scale indicated a satisfactory correlation between the dimensions of the female sexual well-being scale and the total score. To determine the simultaneous validity of the scale, the correlation between the dimensions of the female sexual well-being scale and the psychological well-being scale was used, which indicated a favorable correlation (p <0.001). Cronbach's alpha and halving coefficients for the whole scale and its dimensions ranged from 0.63 to 0.82. The final result is that the Persian form of the Women's Sexual Welfare Scale has good validity and reliability in Iranian society and can be used in research, educational and clinical situations. Manuscript profile -
Open Access Article
33 - Normalization of the Cognitive Questionnaire about Body and Health (cabah)
فریده نرگسی farzad zandi alireza mokhberi maryam khadirzareDysfunctional beliefs about illness and physical symptoms have been identified as risk factors for health anxiety. The Body and Health Cognitions Questionnaire (CABAH) is one of the most comprehensive tools for measuring health cognition. The aim of this study was to st MoreDysfunctional beliefs about illness and physical symptoms have been identified as risk factors for health anxiety. The Body and Health Cognitions Questionnaire (CABAH) is one of the most comprehensive tools for measuring health cognition. The aim of this study was to standardize Questionnaire 30 of this questionnaire in Iran. The number of samples in this study included 869 male and female students with health anxiety in Sanandaj Azad University, Kurdistan University and Khorramabad University of Medical Sciences who were selected by convenience sampling. Were evaluated. The validity of the questionnaire was obtained by Cronbach's alpha method and the construct validity was obtained by confirmatory factor analysis using Lizrel software. The Cronbach's alpha value of the whole questionnaire is 0.80, which indicates the appropriate internal consistency of the questionnaire. Also, the correlation between two parallel forms in the halving test for the CABAH questionnaire was 0.61, which is also acceptable. Therefore, in general, it can be said that the CABAH questionnaire has good reliability and can be used as a valid tool. Manuscript profile -
Open Access Article
34 - Construction and Normalization of computerized working memory test for children
AliAkbar Shariifi Hossein ZareIn the case of working memory in children, due to the basic challenges in evaluating it, there are few tools. The present study was conducted with the aim of developing and standardizing a computerized working memory test for children. The method of this research is a d MoreIn the case of working memory in children, due to the basic challenges in evaluating it, there are few tools. The present study was conducted with the aim of developing and standardizing a computerized working memory test for children. The method of this research is a descriptive study and test development. Among the first to sixth grade students of Shahrekord, 324 students were selected by multi-stage cluster sampling method and were measured by computerized working memory test for children. The results of exploratory factor analysis using principal component analysis with varimax rotation showed that 9 subscales explained 86.54% of the variance of the data. The first, second, third, and fourth factors explained 29.42, 19.78, 18.86, and 18.49 percent of variance, respectively. Also, the test-retest reliability coefficient of 0.814 was obtained for the whole test and the correlation between Working Memory Test Battery for Children and the computerized working memory test for children in the range of 0.513 to 0.791. In total, the findings of the research showed that computerized working memory test for children has satisfactory psychometric properties in the Iranian children's pupulation, which can be used to measure children's working memory. Manuscript profile -
Open Access Article
35 - Making and Survey of Psychometric Features of Psychological-Marital Problems Questionnaire (PMPQ) in Women Who Field for a Divorce with a History of Early Marriage: A Mixed Study
seyed javad seifi Ghozlu Esmaeil Sadri Damirchi ALI rezaei sharif Ali SheykholeslamiThe aim of this study was to construct and validate a questionnaire on marriage problems in women who field for a divorce with a history of early marriage. The present research method is an exploratory-confirmatory design and consists of two stages. The first step is th MoreThe aim of this study was to construct and validate a questionnaire on marriage problems in women who field for a divorce with a history of early marriage. The present research method is an exploratory-confirmatory design and consists of two stages. The first step is the qualitative method and the exploratory method is used to make the tool. For this purpose, while interviewing 15 women applicants for divorce in the form of interviews with focus groups to the theoretical extent of data saturation, the initial form of the questionnaire was prepared. In the second stage of the research, using a quantitative method, the validity and reliability of the Questionnaire were investigated. For this purpose, 160 people were selected by available sampling from among women who field for a divorce with a history of early marriage in Ardabil in 1399, and completed the psychological-marital problems questionnaire and the Depression, Anxiety and Stress Scale (DASS-21) and the Hudson Marital Satisfaction Questionnaire (1992). Data were analyzed using descriptive and inferential statistical methods using SPSS and AMOS software. The results showed that the psychological-marital problems questionnaire contained 28 questions and 7 approved dimensions, which are: Anxiety, depression, confusion, insecurity and pessimism, nostalgia and loss, lack of mutual understanding and marital conflict. Calculation of validity and reliability of the questionnaire showed that this Questionnaire has high validity and reliability. Therefore, it can be used in research and evaluation. Manuscript profile -
Open Access Article
36 - Investigating the Influence of Human Resources Management Activities on Customer Loyalty in the Hoteling Industry Using a Multilevel Approach
zahra Nikkhah-Farkhani Mohammad shaykhzadeConsidering the fact that customer loyalty is regarded as one of the most important concerns of hotel managers, this study sought to investigate the influence of human resources management activities on customer loyalty using a multi-level approach. The statistical popu MoreConsidering the fact that customer loyalty is regarded as one of the most important concerns of hotel managers, this study sought to investigate the influence of human resources management activities on customer loyalty using a multi-level approach. The statistical population of the study comprised of managers, staff, and customers of four-star and five-star hotels in Mashhad. Moreover, the statistical sample size of the research at the organization level consisted of thirty-four, one-hundred and forty, two-hundred and forty managers, staff, and customers at organizational, staff, and customer levels, respectively. On the other hand, Sam’s 12-item questionnaire (2008) and the 17-item questionnaire developed by Al-Rafiei et al. (2013) were used to measure the human resources management activities and the staff’s satisfaction and loyalty, respectively, whose validity and reliability was tested using the Content validity method and Cronbach's alpha, respectively. Finally, HLM 7.02 and the SPSS software were used to analyse the collected data. The results proved the positive influence of human resources management activities on the staff’s satisfaction and loyalty, and in turn, on the satisfaction and loyalty of the customers. Therefore, it could be argued that hotel managers can increase the loyalty of their customers by emphasizing human resource management activities and improving their staff’s satisfaction and loyalty, which would increase the profitability of hotels in the long term by reducing marketing costs. Manuscript profile -
Open Access Article
37 - Long-Term Software Fault Prediction Model with Linear Regression and Data Transformation
Momotaz Begum Jahid Hasan Rony Md. Rashedul Islam Jia UddinThe validation performance is obligatory to ensure the software reliability by determining the characteristics of an implemented software system. To ensure the reliability of software, not only detecting and solving occurred faults but also predicting the future fault i MoreThe validation performance is obligatory to ensure the software reliability by determining the characteristics of an implemented software system. To ensure the reliability of software, not only detecting and solving occurred faults but also predicting the future fault is required. It is performed before any actual testing phase initiates. As a result, various works on software fault prediction have been done. In this paper presents, we present a software fault prediction model where different data transformation methods are applied with Poisson fault count data. For data pre-processing from Poisson data to Gaussian data, Box-Cox power transformation (Box-Cox_T), Yeo-Johnson power transformation (Yeo-Johnson_T), and Anscombe transformation (Anscombe_T) are used here. And then, to predict long-term software fault prediction, linear regression is applied. Linear regression shows the linear relationship between the dependent and independent variable correspondingly relative error and testing days. For synthesis analysis, three real software fault count datasets are used, where we compare the proposed approach with Naïve gauss, exponential smoothing time series forecasting model, and conventional method software reliability growth models (SRGMs) in terms of data transformation (With_T) and non-data transformation (Non_T). Our datasets contain days and cumulative software faults represented in (62, 133), (181, 225), and (114, 189) formats, respectively. Box-Cox power transformation with linear regression (L_Box-Cox_T) method, has outperformed all other methods with regard to average relative error from the short to long term. Manuscript profile -
Open Access Article
38 - Psychometric Properties and Factor Structure of Persian Version of Premenstrual Coping Measure
Marziyeh Sadeghzadeh Meral Jafari Negar GhomatipourThe present study was conducted with the aim of introducing and investigating the psychometric properties of the Persian version of the Premenstrual Coping Measure (PMCM (. This research, in terms of method, is a descriptive-cross-sectional-correlation study that its po MoreThe present study was conducted with the aim of introducing and investigating the psychometric properties of the Persian version of the Premenstrual Coping Measure (PMCM (. This research, in terms of method, is a descriptive-cross-sectional-correlation study that its population included all the female students in Salman Farsi University of Kazeroon in the academic year of 2021-2022. The sample group included 303 female students who were selected by the available sampling method and actually participated in the present research by answering the online questionnaire. This questionnaire, in addition to the Persian version of the PMCM, included the Premenstrual Symptoms Screening Tool, Multidimensional Health Locus of Control-C, and the Menstrual Attitude Questionnaire. Research data has been analyzed in SPSS-22, AMOS-22 and JASP-09. The results of exploratory and confirmatory factor analysis have confirmed the existence of a five-factor structure in the scores obtained from the Persian version of the premenstrual coping strategies scale. The values of Cronbach’s alpha and McDonald's omega also showed good internal consistency in the total scale and its five subscales. The correlation coefficients between PMCM, and three other research tools, while confirming the construct validity, suggested a close relationship between premenstrual strategies and an internal locus control for health and an attitude based on expectation and prediction of menstruation. Manuscript profile -
Open Access Article
39 - Psychometric Properties Of Bender – Gestalt(II) Test In Primary School Students
mehdi arabzadeh alireza joshanyVisual-Motor skill is essential for human development and an important part of psychological evaluations and allows a person to have sufficient interaction with her environment. In order to measure this important skill, it is better to use an objective and standard tool MoreVisual-Motor skill is essential for human development and an important part of psychological evaluations and allows a person to have sufficient interaction with her environment. In order to measure this important skill, it is better to use an objective and standard tool. Since for each psychological assessment tool, it is necessary to check the psychometric properties. The aim of the current research is to investigate the psychometric properties of B.G.V.M.T (2) in students aged 6 to 12 years. The current research was applied in terms of objective and descriptive research method of correlation type. The statistical population of the present study included all primary school students in the 4 educational districts of Qom in the academic year 1400-1401, which were selected by multi-stage cluster sampling, 374 girls and 444 boys from 8 schools. For the reliability of the test, retesting and dividing methods were used. The reliability coefficient obtained from the retesting of the test in the copy and recall phases was 0.85 and 0.78, respectively, and the average reliability coefficient was 0.67. To measure the validity of the test from 3 methods[calculating the correlation coefficients between the test scores of B.G.T (2) and Andre Ray and the inclusive scoring system and Koppitz, comparing the performance of children with and without learning disorders] was used. In general, according to results of the reliability and validity research conducted in this research, we can consider the B.G.T (2) with a G.S.S as a useful tool for measuring V.M ability of children. Manuscript profile -
Open Access Article
40 - Reliability and Validity of the Short Form of the Reflective Function Questionnaire
Fatemeh Arab Ali doosti محمود دهقانی maryam roshan somayeh robat mili<p>The aim of this study was to validate or determine the psychometric properties of the Reflection Function Questionnaire. The statistical population of this study included all students of Payam Noor universities in West Azerbaijan (Miandoab, Shahindej, Bukan, Urmia) a More<p>The aim of this study was to validate or determine the psychometric properties of the Reflection Function Questionnaire. The statistical population of this study included all students of Payam Noor universities in West Azerbaijan (Miandoab, Shahindej, Bukan, Urmia) and Tabriz who were studying in the academic year 2017-2018. Among them, 570 people were selected by multi-stage cluster sampling, and answered the 8-question Reflective Function Questionnaire (RFQ). The collected data was randomly divided into two equal parts (n=285) for exploratory and confirmatory factor analysis. The results obtained from exploratory factor analysis with principal components and oblimin rotation showed a two-factor structure which were named certainty and uncertainty. The amount of eigenvalue for certainty and uncertainty were 2.04 and 1.39, respectively. Also, the first factor (certainty) and the second factor (uncertainty) explained 25.56 and 13.42 percent of the variance of scores. The results of confirmatory factor analysis confirmed the bifactor structure (χ2=76.12, df=48, P=0.01; GFI=0.98; AGFI=0.96; CFI=0.98; RMSEA=0.03). Cronbach's alpha coefficients for factors were 0.78 and 0.76, respectively. In addition, the retest results for certainty and uncertainty factors were 0.76 and 0.73, respectively, and the composite reliability index for these two factors were 0.88 and 0.86, respectively. The results of Pearson's correlation to examine convergent validity with attachment styles and Emotion regulation difficulty showed that there is a significant relationship between these variables at the 0.01 level. Also, using the Fornell and Locker index, the discriminant validity of RFQ was confirmed. According to the obtained results, the validity and reliability of the Persian version of RFQ can be confirmed.</p> Manuscript profile -
Open Access Article
41 - The Psychometric Properties of Benjamin`s Structural Analysis of Social Behavior Questionnaire Introject Surface (Self-Concept)
sara mirzaei feizabadi habib hadian fard Mohammad Reza Taghavi Mehdi Reza SarafrazThe aim of this study was to investigate the psychometric properties of Benjamin`s (1974) Structural Analysis of Social Behavior (SASB) questionnaire introject surface (self-concept) in Ferdowsi University of Mashhad. The study participants were 324 students (185 girls MoreThe aim of this study was to investigate the psychometric properties of Benjamin`s (1974) Structural Analysis of Social Behavior (SASB) questionnaire introject surface (self-concept) in Ferdowsi University of Mashhad. The study participants were 324 students (185 girls and 139 boys) who were studying in the second semester of 2023 academic year, and completed Benjamin`s (1974) Structural Analysis of Social Behavior (SASB) questionnaire introject surfase (self-concept), Beck Depression Inventory-II (1996), Beck Anxiety Inventory (1988) and Beck Suicide Scale Ideation (1988). The Data were analyzed using correlation coefficient, Cronbach`s alpha coefficient, and confirmatory factor analysis in SPSS-26 and AMOS-25 software. The results show the reliability of this questionnaire through Cronbach's alpha coefficient and Spearman's and Guttman's correlation coefficients in the split-half method, as well as its validity through the convergent coefficients of the dimensions of this questionnaire with other valid tests and finally the construct validity through confirmatory factor analysis confirmed. In general, it can be concluded that Benjamin`s SASB-self-concept (Introject) questionnaire has very good reliability and validity in Iranian students. Manuscript profile
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