جستجوی مقالات مرتبط با کلیدواژه "اثربخشی" در نشریات گروه "عمران"

The main idea of developing green buildings is based on the construction of environmentally friendly buildings and energy conservation and sustainable development. Although the concept of green building alone can open the way to achieve such goals, a mechanism for its implementation must also be provided. Therefore, identifying and evaluating the necessary incentives for the development of green buildings has a key role. The main goal of this paper is to evaluate the effectiveness of the incentive measures (policies) influenced on the promotion of green buildings. By reviewing and summarizing the results of the research literature to identify relevant policies in the field of green construction based on different phases of the project's life cycle, a database consisting of 6 major goals and 42 incentive actions (policies) effective on the promotion of green buildings was identified. By developing the comprehensive fuzzy evaluation method and forming the policy-action matrix, policies and policies were evaluated in the direction of further development of green buildings. The results showed that regulatory measures play an important role in all five phases of the life cycle of green buildings. However, it should not be overlooked that due to the obstacles created by regulatory policies for the future green building market, these policies may not be the best approach for green building development. Incentive measures such as financial incentives for the decision-making stage of development, improvement of technical standards and evaluation system, and conversion to an integrated design model in the market and technology are ranked higher than regulatory policies. The results of the present research provide a clear understanding of the adoption of effective incentive policies on the promotion of green buildings.

After The Emergence of the COVID-19 Virus, Beyond the Inappropriate Aspects of the Contagion of the Virus, the Effects on the Global Society Have Been Appeared. Changes in Mental Health, Social Relations, Lifestyle, Transportation, Income, Living Motivation, Etc. Has Been Investigated in Various Researches. in this Study, the Effects of COVID-19 Contagion on Changes in Traffic Volume, Modes, Air Pollutions Such as Particulate Matter (PM), Sulphur Oxides (SOx), Carbon Monoxide (CO), and Nitrogen Oxides (NOx) For Karaj-Chalus Corridor, is Investigated by SPSS Using Pearson Correlation and Cross-Correlation, And Multivariate Regression. in Addition, the Effects of Control and Management Policies Against Corona Virus Contagion on Each Aforementioned Parameters Were Evaluated. the Results of this Study Showed That, During the Peak Period of the COVID-19 Contagion, the Traffic Volume is Accompanied with A Significant Reduction as Well as the Amount of Generated Pollutants. However, After A Short Time Elapsed Since the Peak of Both the Contagion and the Lockdown, Traffic Volume Increased Even More Than Pre-COVID Period. Moreover, the Analysis of Transport Mode Changes and The Heavy Vehicles' Pollution Showed That Traffic Restrictions and Fines for Non-Domestic Passengers, Despite Higher Risk of Infection, Augmented The Interest of Travelling with Suburban Buses. Cross-Correlation Analysis Showed After 20 Days of Entering Higher Amount of Vehicles to Mazandaran District, Covid Cases Increased Respectively.

In this research, the effectiveness of installing night lighting in rural roads was evaluated. To this end, a number of rural roads of Ilam province have been selected. Two axes have been selected as the counter group and two axes as the comparison group. Crash data of four years has been collected. The collected data is analyzed according to before and after study with comparison group for studying crash reduction and benefit/cost method for economic analysis. For accurately estimating the effectiveness, the predicted crashes on improved and comparison sites were used. These predictions were done using the prediction model of crashes in rural two-way roads, and then the results were calibrated for local conditions using the crash modification factor related to lighting installation and also the model calibration method. By applying different stages of the method, the results show a 28% reduction in the frequency of overnight crashes after lighting installation. The statistical significance test indicates the accuracy of the result at 90% confidence level. The results demonstrate an acceptable effectiveness of lighting installation in reduce overnight crashes. The results of the economic evaluation of lighting installation in this study indicate that lighting installing has been successful in improving safety. The ratio of the benefit to the total cost of lighting installing on two counter sites is 1700 to 1. This value indicates that the benefits gained in Rial value are much higher than the annual costs of lighting installation during a 15-year period and about 1700 times.

Today, according to the rapid development in construction industry in our country, safety issues in construction sites become a serious challenge. So, paying attention to the safety, indicating effective factors and safety evaluation in projects are essential in order to improving construction projects safety. This paper is conducted to assess the effectiveness of project management maturity model on safety standards in mass construction projects. A Researcher made questionnaire with approved reliability and validity was used in this paper and based on this questionnaire the effectiveness of project management knowledge maturity model on important safety indicators of projects such as performance, cost, time and safety quality has been evaluated. The mentioned questionnaires were distributed between mass production projects in District 1 in Tehran province and collected data were analyzed by SPSS software and regression techniques. The results of regression analysis indicate the strong and positive effects of the project management knowledge maturity model on the standard safety of projects. Therefore, it can be concluded that the application of project management knowledge maturity model in mass production projects has a significant impact on improving the standard safety indicators of projects and in addition to increasing safety performance, safety costs and the waste of time reduction will greatly increase the safety quality of projects.

In the last three decades, numerous civil projects have been planned, implemented and exploited in Iran. In the meantime, regardless of the need to comply with all engineering and executive principles during the design and construction phase, monitoring of these projects with the aim of evaluating the plans criteria in terms of their effectiveness and efficiency over the project life cycle is essential. In this way, the historical background of lunched projects in Iran shows that a number of these projects have not undergone comprehensive studies in the initial and complementary study phases. Consequently, during the operation phase, the objectives which set at the design stage have not been met. Currently, there is no clear procedure for monitoring the effectiveness of lunched projects in Iran. So in this paper, a description of similar services for monitoring the effectiveness of lunched projects during the operation phase is developed. This model can be used as a general base for monitoring lunched project in Iran.