درخت حوزه‌های تخصصی

Value stream mapping because of being able to understand process bottlenecks, as one of the most common tools for analyzing, identifying and eliminating various losses in operational and support processes are used. On the other hand, inventory management, precise control entry and exit of goods, accurate and timely information about the inventories status and planning, reduce product maintenance costs, including important issues organizations have a special look to it to consider the whole objectives and strategies, making procedures and policies that have a positive effect on the overall organization’s economy. In this paper, the use of value stream mapping as a lean production technique, in a production process to improve inventory control is discussed. This is a tool seeks to reduce losses, especially losses related to inventory by mining a bearing manufacturer companies. In this study, the literature of value stream mapping considered. The current state and future state of the company drawn in order to improve production process and losses in the company's future status. In addition, after drawing the mapping, the results of the simulation software Arena and the final report suggests that the use of this technique has an impact on reduce losses and increase inventory turnover.

The aim of the present research was to study the impact of organizational culture on entrepreneurial orientation given the mediating role of knowledge management. The statistical population consisted of the employees of district 1 and 2 municipalities of Qazvin who were about 200 in number, of whom 130 people were selected based on stratified random sampling method and Cochran formula. Data analysis was done using structural equation modeling with the help of LISREL 8.8 software and Smart PLS 2 in two parts: measurement model and structural part. In the former, technical characteristics of questionnaire were evaluated and the necessary amendments were made; and in the second part, the coefficients of structural model were used to test the hypothesis of the research. The results indicate a significant and positive impact on the entrepreneurial orientation of organizational culture and knowledge management on the one hand and on the other hand a significant impact on the relationship between the two of the mediator of knowledge management.

This research aimed to identify the dimensions, components, priorities and distinction between existing and desired condition, organizational forgetting management and provides a model for appropriate mechanisms for controlling it at university. The research in term of goal is practical and giving quantitative data and method is descriptive-survey research. In order to validate the measurement, content validity has been used and to assess the reliability the Cronbach's Alpha has been applied. The study population consists of faculty and staff at Islamic Azad University in district eight. Considering the total size of faculty and staff at Islamic Azad University (13117), sample size is determined (375). According to the main question of this research, some theoretical studies and exploratory ones based on existing documents, questionnaires and interviews with experts were done. Questionnaires have been distributed and analyzed, then current and ideal situation were identified. Therefore, the statistical tables were prepared and described. To do so, inferential statistical methods have been used with SPSS and Lisrel so that the relationship between variables can be measured and the four management aspects of the research consisting of process, technology, culture and structure are determined to evaluate the organizational forgetting management. By comparing the conditions and dimensions in current and ideal state, a considerable gap was found between the two mentioned states. On the basis of the analyses, the strengths and weaknesses were found and the mechanisms to eliminate this gap were expressed.

Nowadays, one of the topics of interest to researchers is the authority of teachers, and fades it in universities. Look at the reality in the society and comparing with historical context motivates researchers to question why some of the professors at the university have less authority. For this purpose, this research is trying to focus on economic and demographic factors, to answer questions. The method used in this research is descriptive analysis using survey techniques and data collection tool is a questionnaire. The population consisted of professors of Kermanshah PNU in the academic year 2011-2012, total number of them is equal to 258. Due to the large size of the population, using the Lin sampling table sample size is 258, which for the study based on striated random sampling were selected. In the present study, face validity assessment method and construct validity based on factor analysis were used. To determine the reliability of the statements of each variable, Cronbach's alpha used. Results using SPSS21 and Amos21 statistical software were analyzed. Mean traditional authority equal to 13.57, then charisma authority13.54, and intellectual authority is 18.72. The dimensions compared with the average expected for above dimension respectively traditional authority 15, charisma authority 12, intellectual authority is 15. The results show that there is a significant relationship between relative deprivation and professor’s authority (r=-0.301), the use of mass media and professor’s authority (r=0.161), monthly income and professor’s authority (r=-0.153). In addition, the results of comparison show that average of the professor’s authority among the courses is different, and this difference based on f test is significant. The average professor’s authority, for people with different degrees is different. The results of Multiple regression indicate that the traditional authority (T=4.335), self-esteem (T =3.925), charismatic authority (T =3.788), and the relative deprivation (T =-2.287), total 0.42 from internal changes explain the value of professor’s authority variables. Furthermore, the results of structural equation shows that Chi square insignificant CMIN is equal to 211.143, square root index mean residual square or RMSEA is equal to 0.075, RMR index or residuals mean square root is equal to 0.098, the Chi-square to the degrees of freedom ratio CMIN.dF in model is 3.199, against the CFI comparative fit index 0.926, and comparative fit index thrifty PCFI, are equal to 0.671 Comparative and thrifty indicators for evaluating the overall model calculated that show collected data to support the theoretical model considered.

Due to universal importance of Tabriz carpet art and presence of specific indicators and motifs in Tabriz carpet art and its potentials, existence of architectural site for representing this art as carpet art museum in Tabriz is necessary. The site of this project is located adjacent to Tabriz Blue Mosque near the museum historical site. It is essential to consider the historical elements and components of the mentioned district identity in historical sites. This research aims at presenting architectural design of a valuable work of Tabriz carpet art museum besides considering criteria of the historical site adjacent to the Tabriz Blue Mosque. In designing Tabriz carpet art museum, the site potentials, concurrent employment of cultural and historical fabric concepts, adjacency of the Blue Mosque and being in direction of historical bazaar and Silk Road have been considered and used as the key pivots in design. This research is a case study based on observation and using architectural tools. Design limitations have been considered in the architecture of the museum near historical fabrics. The design components consist of Tabriz Bazaar cultural-historical architecture elements, utilization of the spatial connection, semantic continuation, respect to the site, preservation of old historical memory in modern approach. The results of this research can lead to successful architecture design adjacent to historical sites.

A sensitivity analysis of the flood safety of Solaimantangeh dam using a regional climate change simulation is presented. Based on the output of the CCSM (Community Climate Change System Model) general circulation model, the NIRCM (North of Iran Regional Climate Model) computes regional scale output with 50 km spatial resolution and 21 vertical layers. Using the SRES (Special Report Emission Scenario) “B1” Climate Change Scenario when applied to the Tajan river basin, where Solaimantangeh dam is located, NIRCM reduces significantly the bias in Annual Maximum Event total Precipitation (AMEP) & Annual Maximum Daily Precipitation (AMDP) that CCSM shows. The stream flow change scenario is then simulated using SSARR (Stream flow Synthesis and Reservoir Regulation) model. A rainfall-runoff model was implemented using precipitation and temperature projected by CCSM and NIRCM. The model demonstrated that average Stream flow would increases 38.7% and the variability would increases 14.3%. This remarkable increase in projected annual maximum flow for the next 20 years (2004-2023) should be a significant negative signal to water resources managers. The results indicate that the number of floods remains almost the same, but that the magnitude of a single flood event and the recovery from it become worse.