درخت حوزه‌های تخصصی

<strong>Abstract</strong> The motivation of this paper is the way in which the alternative fuel modes for public transport are analyzed. The aim is proposing a hybrid method to select the best fuel for public transport. The buses with old and new alternative fuels are considered in this paper. Several types of fuels are considered as alternative-fuel modes, e.g., conventional diesel, ultra-low-sulfur diesel fuel, bio-diesel fuel, and electric and gasoline hybrid engine. Moreover, many decision criteria categorized into performance, environmental, economical, infrastructure, technological, social, and risk are taken into consideration. The paper uses a hybrid multi-criteria decision analysis model to rank the fuel modes and/or choose the most efficient one. This hybrid method consists of rank order centroid method to assign the weights to the criteria, and additive ratio assessment technique to analyze the decision-making matrix. To demonstrate the applicability and flexibility of the model, a case study with data given by the experts from the respected fields is employed. The result presents that the liquefied propane gas (LPG) outperforms the other options in terms of the selected criteria.   <strong> </strong>

The purpose of the current work, conducted in 2017 and 2018, is to identify andprioritize the qualitative and quantitative factors affecting human resources(HR) valuation at National Iranian Oil Company and its subsidiaries. Using asnowball sampling method, 28 experts were selected from the head of humanresources, the head of finance, and some staff members of National IranianOil Company and its subsidiaries. In order to identify the dimensions andcomponents affecting human resources valuation, a comprehensive literaturereview at international and national levels, interviews with experts, andthree stages of distribution and collection of questionnaires using the FuzzyDelphi method were performed. Then, two phases of the paired comparisonquestionnaire were developed and provided for the experts to explain andevaluate the cause-and-effect relationships between the dimensions andthe components together. The specified components and dimensions wereprioritized using the Fuzzy DEMATEL method. Using the Fuzzy Delphimethod, 15 dimensions and 101 components influencing HR valuation wereidentified at National Iranian Oil Company and its affiliated companies.According to Pareto 20-80, 20 components were identified as the factorsinfluencing human resources valuation at National Iranian Oil Company andits subsidiaries, and using the Fuzzy DEMATEL method, 15 dimensionsand 20 specified components were prioritized. According to the resultsobtained, the most important dimension and component affecting humanresources valuation at National Iranian Oil Company and its subsidiaries arejob satisfaction, motivation, and perseverance in employees’ assignments.

Projects are affected by many internal and external factors. Such factors could be initiated domestically or internationally. The South Pars is a mega gas field in Iran which requires billions of dollars for development and gas extraction. Its development has taken a rather long time and gone through many challenges over the last two decades; due to several challenges, especially international barriers.In this research, the effects of sanctions on the expenditurs ofselected activities in developing of pars field between internal and foreign contractors is investigated. The main purpose of this research is to calculate the cost of selected activities of South Pars phases and compare the performance of internal contractors in sanctions conditions with foreign contractors in non-sanctions conditions.For this purpose, 18 activities which were similar in all of South Pars contracts,were selected.In these three sections, after applying relative indexes,global inflation, and technology by using inferential statistics, the total cost were considered among internal and foreign contractors. Based on the statistical analysis,there was no significant difference between the expenditures of selected activities performed by internal contractors and foreign contractors Under sanctions.

The study is to review the disclosure quality rank on income-smoothing and informativeness by means of four hypotheses. The timescale is between 2010 and 2016, and 149 TSE’s listed companies are studied. The first hypothesis examines the effect of higher disclosure quality rank on income informativeness. The result confirms that higher rank of disclosure quality improves income informativeness. The second hypothesis reviews the relationship between disclosure quality rank and income smoothing. The findings of this hypothesis indicate lower disclosure quality will increase income smoothing behavior. In the third hypothesis, the effect of income smoothing on informativeness is examined, which results in a statistical view that income smoothing has a sensible positive effect on informativeness. Finally, the effect of higher rank of disclosure quality on the informativeness of the smoothing listed companies in the fourth hypothesis. The findings indicate that income smoothing has a meaningful effect in strong disclosure quality companies.

Corporate Governance debates raised seriously in scandals and financial crisis of recent decades in large companies and banks. The focus of this debate is not merely the corporate governance system, and its main function is to preserve the interests of stakeholders. At the macro level, economic efficiency, sustainable growth and financial stability are important effects of the system. Establishing an efficient corporate governance system in the banking system and evaluating and ranking them requires a comprehensive model that encompasses all the internal and external mechanisms affecting corporate governance and localized indices and relevant international principles. In this research, corporate governance in banks has been evaluated via a model developed in the framework of systematic thinking which includes three dimensions 1) Inputs (structures and inputs), 2) Roles and processes, and 3) Outputs (goals, performance and results of them). The main objectives of this study are to evaluate the compliance status of 27 banks with the indicators of corporate governance model and their efficiency and effectiveness, as well as to examine the correlation between the components of corporate governance within the system including inputs, processes and outputs. According to the results, 47.8% of the qualitative indicators are covered in the current situation of the banks of the country, but there is a significant gap between the full compliance with the model. Based on the results in the performance sector, private banks scored the highest and state banks scored the lowest. The results of evaluating the correlation between the components of corporate governance model showed that there is a positive and significant relationship between the dimensions of inputs and processes with the goals, results and performance of banks. Accordingly, by improving the status of input indicators and the corporate governance model process, the status of target indicators, results and performance of banks will also improve