Management Research in Iran

Abstract This study examines the impact of the most prominent early warning signs and causes of out-of-sequence (OOS) work on the productivity of industrial construction projects. Relying on the opinions of 16 industrial construction professionals and using the fuzzy Delphi technique, the most relevant of these signs and causes were identified. Then, using Max-Max and Bayes rules, the impact of this signs and causes on the productivity of industrial construction projects was analyzed. The findings indicated a high level of agreement between the rankings of causes of OOS work and a moderate level of agreement between the rankings of early warning signs, as assessed using both the Bayes and Max-Max approaches. Combining the findings of the two approaches revealed that if any of the following six early warning signs are observed—regardless of which sign precedes the occurrence of any cause of OOS work—it can be expected to lead to substantial decreases in project productivity: increase in drawing revisions, Inexperience in key roles, trending away from baseline progress curve, inadequate transition planning from construction to commissioning, high percentage of rework, and float usage early in schedule. Additionally, among the most obvious causes of OOS work, lack of consideration of stakeholder requirements in project planning, change in design, poor communication between different project parties throughout the project, late delivery from vendors, unrealistic activities duration, and lack of access to full project, respectively, can cause the greatest damage to the productivity of construction projects.

Abstract Appraisal and calculate productivity of the industrial groups with applying of system dynamics approach in 1404 horizon. In this paper, industrial productivity was calculated in 1404 horizon with usage of system dynamics model. For this purpose, with regard to behavior of the effective variables and data of 1380 to 1388 years, the productivity model was designed and simulated.The result showed industrial productivity from 1380 to 1388 years always decreasing and this trend because increasing input production, will be continuing from 1389 to 1396 years, but from 1396 to 1404 horizon this trend will be increased. It should be noted that the productivity of the manufacturing process, labor productivity is lower fluctuation from than capital and energy. With regard to role of industrial productivity in value added, the appraisal of policy changes showed that increase of 1% annual productivity rate in industrial sector in 1404 with ratio to bas year, lead to increasing 3.5%.value added

Abstract The purpose of this study is to explain the ability of the computer simulation methodology to improve productivity of a production system. At the beginning, it demonstrates how simulation can be employed in productivity analysis. In this regard, a case study approach was used and the proposal methodology was implemented to represent the simulation capability to enhance the productivity in the case study. An explanation of the existing system was presented and the corresponding model called AS-IS model was designed, then the model was runned and the output was analyzed. The results of the study showed the bottlenecks and performance measures of the existing system and the initiated two models according to the simulation output, called TO-BE models. The results obtained from the simulation experiment showed the performance measure in the TO-BE models. The manager of the company, has selected the TO-BE2 model as the best alternative based on the economical and others measure.

Abstract The increasing trend of manpower and financial investments have made information technology productivity more important than before. Researches show various results of information technology productivity. While some of the researches attribute the improvement and increase of productivity and profitability to the information technology, others consider the real profits of information technology disappointing and even pretend that information technology has not been able to increase productivity and create economic advantage. The present research covers the information technology productivity at the economy level (industry level) and has a different assessment of information technology productivity criteria through studying whole economic guidelines as well as industrial guidelines. The results of the field research and surveying the records and valid statistics made it clear that although there is not a meaning ful disparity between manpower and financial investments, there is a gap between existing information technology productivity and the prospective one. In this article, besides stating the study criteria and presenting hypotheses and research findings, the different criteria of assessing information technology productivity have been taken into consideration.

Abstract At the present time that our country is passing through a critical period, the role of the administrative, industrial and educational organizations is inevitable in the economic operation and development of the country. But the fact whether all of them have been successful in making an effort to obtain the given aims is really questionable, because some of them seem to have performed a lot better than the others. Viewing the success of some of these organizations, we can find out about some common and key factors which have played important roles in their efficient performance. An important factor is the existing powerful and overruling culture in which these organizations operate. Certainly, getting to know such factors and supporting them would be a useful step in leading these organizations to achieve their ideal goals successfully. In this Article, first a theoretical analysis of culture and organizational culture is presented, then labor productivity and finally the existing theories concerning the relationship between organizational culture and labor productivity are explained. Also, in this investigation, using variance test analysis, the rank of Management Colleges of such academic institutions like Higher Education Confederate of Ghom, Tehran University, Allameh - Tabatabaei University and Shahid Beheshti University have been determined on the basis of the impact of organizational culture on the rate of productivity. By applying the correlation coefficient of Spearman, the relation of organizational culture with productivity of colleges has been analyzed with regard to the criteria explained for productivity. Finally, using Friedman’s test the criteria and characteristics of organizational culture have been ranked.

Abstract Nowadays mumerous machines are used for production in electronic industries. Considering the high cost of in vest ments on these machines, how to increase their productivity is an important problem in thiese industries. In this article it is tried that with, studying the functions of concurrent machines such as Axial and Jumper Wire first we present a linear programming mathematical model to optimize these machines’ productivities and then with suggesting an heuristic model, we provide necessary facilities to solve a real problem. We also study the results of our findings on the Axial and Jumper Wire Machines in a factory.