فهرست مطالب سهیلا نظری

Natural resource rent affects countries’ economies through various channels. Revenues from the natural resources sales are expected to boost countries' economic growth, but the economic experience of recent decades reveals the numerous economic problems in these countries, the most important of which may be the increase in the shadow economy size. Moreover, the institutions specify the significant economic axes like resources and assets distribution in the community, so that the level of institutional quality brings about the optimal resource directing and their allocation through economic stability and affects the shadow economy volume by increasing economic stability and reducing uncertainty. The purpose of the present study was to examine the effect of natural resource rent and institutional quality on the shadow economy in 87 countries with high and low inflation rates from 2000 to 2018. The analysis method was system generalized-method of moments (System GMM). Smart PLS software was used to estimate the shadow economy. The results indicated that in both low-inflation and high-inflation countries, the increase in institutional quality has reduced the size of the shadow economy, and the rent of natural resources has had a positive relationship with the volume of the shadow economy

High incidence of breast cancer in young ages in Iran and the resulting complications for families require more attention to be directed to this problem. Evaluation of electrical properties of living body organs, owing to unique and increasing clinical applications, has attracted many researchers around the world.
The impedance imaging system, manufactured by Kermanshah University of Medical Sciences, is an imaging technique with a capacity of determining the characteristics of live tissue in vivo. This technique is based on this principle that the carrying capacity of breast tissue is influenced by the amount of fat, glandular tissue and presence of tumor in breast, as the breast tumor has a different conductivity to the surrounding tissue. The impedance imaging system, designed to determine its efficiency for diagnosis of breast tumor, was evaluated in 17 patients whose lesions were diagnosed by sonography.
The results of impedance imaging system showed that from 49 malignant tumors, 38 tumors were diagnosed correctly and 11 cases were diagnosed as tumors. Also, from 49 healthy tissues, 44 cases were diagnosed correctly and 5 cases were diagnosed erroneously, with accuracy of 83.67.
Given its high performance, this system can be used along with sonography as a clinical tool for medical diagnoses.

Present study by "descriptive-analytical" methodology, to aim of spatial analysis of texture interference approaches in the old texture of Baghmalek city has been carried. For achieving of study aim and to regard of Baghmalek old texture present condition and available data, 5 effective indicators to texture interference: building age, building area, building value, type of materials used to building and condition of old texture connect network with 24 sub indicators have been selected. For assessment of these indicators to recognizing of better approach among of four interference approaches, used of 15 expert opinion. Providing layers and information for data and selected indicators based on their constituent variables, according to field observations and impressions and drawing application environment Arc GIS 10 Municipal Database Baghmalek and conductor of the plan is carried out. From data analysis and weighting of expert opinions, to determine the type of physical intervention Buckley fuzzy geometric mean model (FBGM) used and the results obtained from the parameters of the 5 layers in ArcGIS 10 software applied and to recognize physical and interventions in aging tissues City Baghmalek attempted. The results show that the intervention approach to improve the texture is Priority intervention. That is a major part of the tissue surrounding the main streets according to the proposed indicators and the extent of their distribution and the weight of expert opinion the improvements are mainly in need of intervention. streets according to the proposed indicators and the extent of their distribution and the weight of expert opinion the improvements are mainly in need of intervention.