نشریه مهندسی و مدیریت ساخت
سال دوم شماره 4 (پیاپی 8، زمستان 1396)

Attempting to provide adequate, durable, durable, safe and secure housing is one of the greatest concerns of contemporary people, societies and current sovereignty. A concern that has never restored the minds of rulers and has always focused on a large percentage of studies, research, policy, and macroeconomic executions. In Iran, during the recent years, the prosperity of the housing market and its related collections have been regarded as significant, and housing and its quantitative and qualitative status have been introduced as a critical factor.
The National Sandy Homes is a national plan that outlines the prospects for housing in the coming years. In this goal perspective, it means optimal, measurable and measurable changes in the housing situation of Iranian households in the next five years, and strategies and strategies to achieve these goals are developed.
In this research, we try to investigate the new methods of construction and the advantages, disadvantages and potential effects of each in order to advance the objectives of the comprehensive housing plan in different parts of the country. Using the opinions of the experts in the housing sector, a solution is to be developed which, according to the sources and The limitations of each area can be used to determine the most appropriate way to improve the efficiency of the housing sector with respect to these new methods of construction. Consequently, methods that provide greater operationalization and lower costs for each area are introduced as a suggested method for improving the efficiency of housing sector in that area. By investing and supporting the expansion of these new methods of construction, massive and cheap housing can be provided in the least time It's possible for people to make a deal.

Construction contractors In spite of Iran’s governmental economic policy and the presence of companies affiliated with government or military and law enforcement agencies in the field of construction projects, have a fairly significant share in this sector. Unlike quasi-governmental contractors that have access to government funds, private sector companies have a fragile structure against economic crises because of their lack of dependence on these funds. This has led to the rise and fall of contracting companies for a limited time and undermines the private contracting community. Although some of the reasons are related to the structural problems of the Iranian economy, the internal factors of the management of these companies are also effective. The present study was conducted in line with the pathology of this subject with the aim of investigating the relationship between transformational leadership and human resource productivity in order to achieve continuity of life of companies in East Azerbaijan. The statistical population of this research is 102 corporate executives, project and site managers of construction projects in East Azerbaijan. The data were collected using two questionnaire including Transformational Leadership (Bass & Avolio), and human resource productivity (Hersey & Goldsmith). The Cronbach's alpha coefficient of all variables is 0.834, which indicates high reliability and validity. The method of this research is descriptive-correlation based on structural equation modeling. Data were analyzed by SPSS software and the results showed that transformational leadership has a direct, positive and strong relationship with human resource productivity to achieve continuity of life of companies.

Implementation of construction projects will result in social welfare and economic growth in any country. Considering the massive amount of activities, the collection, sorting and distribution of similar solutions used by organizations will make significant contributions to this industry. Todays, duration of projects execution, scheduling is significant, particularly in economic justification of the project. All managers tend to accelerate or reduce the diversion of projects, but despite the detailed planning at the beginning of the projects, the average time and cost deviation in the development projects are usually much higher than predictions. Thus, knowing the factors affecting the delay in project time and providing solutions for accelerating projects is significant.While knowledge management is one of the most powerful tools in management science, it will be very useful in identifying empirical solutions in this regard. In this paper, using library and field studies, first, the obstacles and problems of timely implementation of the projects are categorized and then the identified solutions are presented using the experiences of various construction companies.Keywords: Construction Project; Scheduling; Knowledge Management;

The increasing speed of changes in technologies and markets and in customers nature and on the other hand the intensifying competition between organizations, has led companies to intensively seek new competitive advantages to excel among competitors and do better in meeting the needs and demands of customers. Hence, it is crucial to have a new solution which is to move towards the creation of organizations that can be fast and flexible in responding to changes in unstable and unpredictable environments. therefore It is imperative for companies to either directly or indirectly,deal with the changes that can threaten their ability to survive Agile management and value engineering are creating new paradigms for managing highly competitive organizations and firms . In this article, authors are seeking to improve the competitiveness of Iranian contractor companies by utilizing value engineering and agile approaches, first, by performing library studies, competitiveness indicators and factors that have effects on them were identified and have been presented. with the results from conducting interviews with Experts ,we screened these indicators and found their effective factors and then with the help of a questionnaire these indicators were ranked. Then, the components affecting the organization's agility were identified and finally,by conducting value engineering in projects, improvements that affect the competitive advantages of companies were identified and a conceptual model of the combination of the three themes was presented. In this model, we reached the answers to the research's questions.(hypothesis)

the purpose of this paper is fuzzy multi-criteria decision-making models topsis to select the optimal location from the perspective of the investor is buying real estate in the city of Tehran, Survey and functional. The study population to real estate experts and scholars in Tehran and the number of 20 experts elected, therefore, research is acceptable reliability, The fuzzy topsis method (F Topsis) was used to evaluate and determine the weight of each criterion and sub-criteria and ranking of the studied areas in Tehran., Analysis of the data shows that among the criteria affecting the selection of optimal location in Tehran from buying real estate investors view as follows: 1) The measure social, 2) cultural and economic criteria. 3) Access and land situation, 40 physical criterion, and 5) environmental standard measure of space - performance matter most. The results are consistent with the findings of Ahmadpur and Rasaiian (1385), H. Sinai and colleagues (1393), Mahmoud Samadi et al (1394), and Deng Yi (2002), The results shows that, among different regions of Tehran (Zone 2, Zone 5, Zone 6) According to the criteria for selecting the optimal location of the property investment perspective, Region 2 in the first place, region 5, the second and third place ranking in the 6th district.

The Slops on the highway roads connect the road with the environment and are in fact a kind of cutaway that causes the natural stability and balance of the slopes and can cause landslide and drift in the slopes of the excavation or embankment. There are various methods for slope stability, which, according to the region conditions and requirements, one of them is used to stabilize the slope. In these studies, various ways of stabilizing the slope on the Abaleh road have been investigated in terms of cost and execution time. According to field studies, dangerous roads have been detected on this road and in the long run about 1 km from the road, which is actually the most dangerous part of the road according to road accident statistics. To conduct studies. The methods used in this case study are: reinforced concrete walls, nailing, the use of Gabion and the use of geocell. In these studies, the use of vegetation method was also investigated. Due to the impossibility of using this method on the slope, the model was not developed in MSP software. The results of the studies showed that, among the methods studied, Nailing as the best option and reinforced concrete wall is considered as the most cost-effective and time-consuming option for stabilizing the slope.