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    Developments, changes and increased competition in the field of industry in recent years, has forced organizations to focus on gaining competitive advantage. In general, many experts believe that organizational performance improvement will increase profitability, and therefore the organization's competitive position relative to other competitors will be dramatically enhanced. It can be accomplished through environmental conditions, resources and practices required. As results, organization can enhance its ability to value creation and achieve profitability. In this study, regarding to resources in achieving high level performance, the key sources of influence on organization performance is derived by reviewing the results of previous researches and according to experts’ points of view. Using the experimental design method, appropriate framework of factors presented. The results show that contribution percentage of following factors: total number of employees, inventory levels, the value of capital assets, the ratio of manufacturing employment to total employment and the cost of advertising on firm performance.    

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  Performance evaluation is prerequisite for many domains of human resource, which precise implementation of which will result in efficiency and effectiveness of performance feedbacking, training and development, promotion of employees, human resource planning, etc. Accurate weighting of evaluation indicators alongside with considering synergy and interaction force of indicators can affect evaluation results. Also differences of different levels of an indicator importance should be considered according to its great significance. This paper tries to realistically weight indicators using Taguchi experimental design method and considering two aforementioned points. An eight-stage model is presented and performance evaluation indicators for a bank cash register are specified. A questionnaire is designed based on proposed Taguchi orthogonal tables. Experts in banking sector are asked to answer the questions of each dimension to determine the weight of indicators. Results of implementing proposed model as ANOVA table show that Taguchi experimental design method can be a proper method in weighting indicators and taking into account the amount of error factor and decisions can be made according to stability of obtained results.        

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Due to the increasing use of concrete and the use of additives in it , research in this direction is very important . Resistance is one of the effective values in the design and control of concrete quality that numerous factors and parameters affect it . Perhaps increasing in concrete mixing time is one of the parameters that are considered less attention and in this research ; the effect of mixing time on compressive strength of Nano - silica concrete with pozzolan rice husk was studied and were compared with concrete without Nano - silica and pozzolan rice husk .Therefore the effect of sulfate to reduce the resistance of this type of concrete was studied and compared . So , a number of pieces of concrete cube with sides of 15 cm contains %1 Nano - silica and 20% pozzolan husk Rice with a time of mixing varies between 10 to 40 minutes , that every 5 minutes , 3 samples of concrete were taken and made in the days 3 , 7 and 28 under the stress test and ultimately the results of mixing different compressive strength by the time was drawn and reported . Rice husk also tested and its components determined and compared with the standard . Nano - silica concrete and concrete pozzolan rice husk and without Nano – silica and pozzolan was also photographed to compare the density of particles , and at the end testing plan was written by Taguchi testing of concrete . The results show that for the most compressive strength of concrete pozzolan Nano comes with rice husk , the right time (optimal) 25 minutes with a Taguchi test results differ by about 9 percent lower than the margin of error is permitted , that at this time the concrete maximum compressive strength shows the maximum compressive strength at 28 days after the concrete 415 kg/cm2 and then does not show significant strength concrete . Pozzolan concrete without silica and rice husk increasing mixing time increases the compressive strength of concrete 375 kg/cm2 in 28 days from the time the concrete mixing process increase the resistance of shows . Ash consumption in the non - crystalline silica , which is 88% of the project , has shown its high pozzolanic activity . Physical and chemical (XRF) examination showed that rice husk ash used in this project within the requirements of ASTM C-618 for pozzolan is located . XRD results show that the consumer is fully amorphous silica from rice husk ash . As the electro - microscopic pictures (sem) is observed in samples without Nano - silica and pozzolan rice husk , the concrete has uneven texture and large crystals are clearly visible which are connected with needle - shaped crystals and large pores are clear in concrete . However , the concrete samples with Nano - silica and rice husk pozzolan , concrete has a more amorphous structure which are homogeneous and integrated together . And the porosity of the concrete is significantly reduced , which increases the resistance of concrete.