Mutual funds are moving rapidly towards financial market development in response to huge market demand in Iran.so what is needed is a useful and applicable method for appraising and selecting them. Performance evaluation is one the most important point in investment .therefore, in this research we tried to compute and compare the performance of mutual funds by different models and compare them to market. So we have chosen 14 active mutual funds during the year 2008 to 2012 and calculate the risks and returns of these mutual funds, then we analysed hypotheses. Results show that performance evaluation of modern and postmodern theory gives different ranking. At this period some mutual funds showed better performance than market and some on the contrary .Also results show that postmodern portfolio criteria were more successful for predicting return than modern criteria. At the end results of research recommend the use of postmodern criteria which are based on downside risk.

In this paper, we solve the integro-differential equation by using new integral transform called Tarig transform. New theorems for the transform of integrals are introduced and proved.

The denoising procedure attenuates the image noise while preserving its edges and fine details. In computed tomography, images are degraded by additive white Gaussian noise because of different acquisition and systems errors. Due to noise existence, specialists may encounter certain difficulties to analyse or extract the useful information from noisy images. This paper presents a novel implementation of the phase preserving algorithm to denoise CT images. The phase preserving is a very powerful noise reduction algorithm but it tends to remove specific small details from the processed CT images supposing these details as noise. Therefore, the Wiener filter is used along with the latter algorithm to reduce the noise and aids in conserving the minor medical details. Moreover, selected adjustments to the phase preserving algorithm are applied to obtain a better image contrast and quality. The performance of the proposed scheme is assessed on naturally and synthetically degraded CT images using the universal image quality index (UIQI) metric. Results show major improvement not only in noise attenuation but also in preserving the small details.

In this paper, we present a reliable combined of Elzaki transform and homotopy perturbation method to solve Burger's equations. The analytical results of the equations have been obtained in terms of convergent series with easily computable components. The nonlinear terms in Burger's equations can be handled by using of homotopy perturbation method. The results tell us that the method is more efficient and easy to handle such partial differential equations.

A study on thin sections, core, and dynamic reservoir in the considered region indicates that dolomite, as one of the diagenetic processes, plays an important role in determining reservoir characteristic. With regard to the available studies, it is obvious that porosity of Sarvak reservoir varies between 2.5 to 3 percent and its estimated permeability is between 0.01- 10 millidarcy. According to the research, one ramp type carbonate platform has been determined in the studied field of Sarvak formation. The formation carbonate facieses consist of framework grains. The framework grains consist of skeletal fragments such as foraminifers, brachiopods, echinoderms, algal fragments, ploids, and minerals. Moreover, the minerals consist of calcite, dolomite, anhydrate, cloy minerals, components which include organic materials, and finally calcareous matrix which is formed in dolomite samples of very fine anhedral and subhedral dolomite crystals.