فهرست مطالب ali khatami firoozabadi

Enterprise architecture is considered as one of the effective ways of aligning information technology with business. In order to use the benefits of Enterprise architecture, the growing trend of its implementation in the organization should be considered. For this purpose, it is necessary to use control and evaluation tools. Enterprise architecture maturity assessment, as one of the effective methods of managing enterprise architecture process, is very important. The goal of maturity assessment is to determine the current status of the organization and to draw a clear picture of the future growth path of the organization. Today, the importance of maturity assessment in various organizational areas is becoming increasingly evident. However, in this area, in the field of financial and banking institutions, due to the complexity of the architecture of information technology and organizational architecture in these institutions, no significant activities were undertaken. Therefore, the present study aims to provide a new and customized model, in order to measure the maturity level of enterprise architecture, in one of the largest banks in Iran. For this purpose, after the extraction of the subject literature, the study and observation of the target bank have been dealt with. The descriptive approach and the structural equations have been developed and then the conceptual model has been extracted. The model includes 3 dimensions, 23 variables and 75 indicators .

The emergence of information technology into human’s life, the lifestyle of human has gone through great changes and has influenced different dimensions of human life. In the meantime, as the portal is one of the most effective tools of information technology have been identified the research is going to investigating the influential of lifestyle portal design on the Human lifestyle changes. For this study, in the first Phase this research has looked into the literature of different dimensions of lifestyle and then been approved by the elite and experts of sociology science. After that, for extract of the effective variables of lifestyle portal, researcher used deep interview and understanding and also Delphi method and then these variables have been extracted by the experts of information technology. The research method is survey. The population of the research: doctorate students of Allameh Tababaei IT management, Tehran University, Master students of Khaje Nasir toosi University in IT management section and the experts in IT in some parts of Tehran. A number of 100 subjects were selected using random sampling method and the data were collected using a researcher-constructed questionnaire. The results showed that, the effect of the lifestyle portal on changing lifestyle with the certainty of 99% was approved.

Over the last few decades, reliability engineering has been successfully applied in many industries to improve the performance of equipment maintenance management. Many optimization models and researches are developed and widely used to achieve a high level of maintenance, i.e. the balance of performance, risk, resources, and cost to achieve an optimal solution. although, the application of these techniques to medical equipment is very new,One of the major challenges is how to improve the safety, security and reliability of medical devices. In this paper a FMEA based assessment model is proposed to improve human reliability in medical devices. Fuzzy linguistic variables are used to express the experts’ evaluation for risk factors of sub systems. The results indicate that the human reliability assessment of medical devices must be more focused on reducing soft failures and hidden risks. Also through the designing and developing processes of medical devices, attention must be paid to the communication between operators and designers.

The main goal in this paper is to propose an optimization model for determining the structure of a series-parallel system. Regarding the previous studies in series-parallel systems, the main contribution of this study is to expand the redundancy allocation parallel to systems that have repairable components. The considered optimization model has two maximizing the system mean time to first failure and minimizing the total cost of the system. The main constraints of the model are: maximum number of the components in the system, maximum and minimum number of components in each subsystem and total weight of the system. After establishing the optimization model, a multi objective approach of Imperialist Competitive Algorithm is proposed to solve the model.

Supplier selection is a multi-criterion issue which embraces both qualitative and quantitative criteria. In order to select the best suppliers، it is necessary to make a trade-off between these criteria، yet some of them may conflict. In this article، we present a decision aide supporting system so that first of all suppliers are evaluated and ranked by utilizing TOPSIS method and then the marginal utility function of the problem are estimated by UTASTAR method. In the end، we can evaluate other suppliers of the organization or suppliers which the organization wants to work with in future.