the final goal of all dairy cow raising systems in the world is to use the available capacities and the cooperation of other sectors in order to solve the problems and issues, such as the limitations in time, man power and financial resources, for providing a complete answer. therefore, the need for optimization of cow raising systems by prioritization of measures and plans is the most obvious ...

this study is a survey research. the population of the study was all specialists who have enough data about ways of sustainability rice cultivars that they were identified and studied through non-probability sampling (purposeful and snowball). to determine the validity of the questionnaire, face and content validity was used, and, to assess the reliability, inconsistency coefficient was used. i...

safety analysis of the roads through the accident rates which is one of the widely used tools has been resulted from the direct exposure method which is based on the ratio of the vehicle-kilometers traveled and vehicle-travel time. however, due to some fundamental flaws in its theories and difficulties in gaining access to the data required such as traffic volume, distance and duration of the t...

background accident investigation programs are a necessary part in identification of risks and management of the business process. objectives one of the most important features of such programs is the analysis technique for identifying the root causes of accidents in order to prevent their recurrences. analytical hierarchy process (ahp) was used to compare management oversight and risk tree (mo...

In this paper an approach in data envelopment analysis dealing with evaluation of non – zero slacks was propounded. This approach intends that weight of inefficient and weak efficient points that have been evaluated as zero weight, be considered as positive weight, and also in this approach, the pareto efficiency evaluates the picture of this point. In this approach positive weights in the i...

In today’s competitive environment evaluating firms’ performance properly, is an important issue not only for investors and creditors but also for the firms that are in the same sector. Determining the competitiveness of the firms and evaluating the financial performance of them is also crucial for the sector’s development. The aim of this study is developing a fuzzy model to evaluate the perfo...

ABSTRACT The reasons of the risk of city underground logistics system are discribed from three aspects of technology, careerman and environment,the risk evaluation index system is constructed based on the method of analytic hierarchy process,the Grey Analytic Hierarchy model is established and the feasibility and validity of this evaluation model is verified by using it in the risk assessment o...

Recently, there have been frequent accidents in energy chemical industry, hence the emergency management become normalized. Risk assessment provides basis for policy makers to make decision in the cases of the uncertain information and emergency. The chemical supply chain are influenced by many risk factors. In order to make the assessment of chemical supply chain risk by combining the qualitat...

According to the problem in communication protocol security assessments, a new protocol security comprehensive evaluation method based on the threedimensional sphere model is presented. In this method, a three-dimensional security evaluation index system was built through positions of index on the external of spherical shell. Evaluation index weights of the top two levels were obtained through ...