introduction the use of cut-outs in electron applicators make changes on output, isodose, and percentage depth dose (pdd) curves. these changes and electron beam dose distribution in the form of three-dimensional (3d) can be measured by gel dosimeters. materials and methods dosimetry was performed with and without a square shield (6×6 cm2 field). the energies were 4, 9, and 16 mev and phantom w...

In this research paper, we had studied the effect of different parameters to analyze the performance of detection of Single Carrier Frequency Division Multiple Access (SC-FDMA). We had analyzed the effects of various parameters like throughput, efficiency and error percentage while using linear receivers. Our goal was to find the simplest setting for Detection of SC-FDMA in which we had distill...

the safety of buried pipes under repeated load has been a challenging task in geotechnical engineering. in this paper artificial neural network and regression model for predicting the vertical deformation of high-density polyethylene (hdpe), small diameter flexible pipes buried in reinforced trenches, which were subjected to repeated loadings to simulate the heavy vehicle loads, are proposed. t...

capital asset pricing model (capm) has been among the common models to estimate expected returns rate. since the linearity assumption is considered in the standard version of the capital asset pricing model, estimating beta in nonlinear setting will be inconsistent and bias-oriented. therefore, this study tries to evaluate predictive power of nonlinear capital asset pricing model as well as sta...

Main aim of this research was comparing mild swimming and recoveries Jacuzzis recovery on blood lactic acid and blood pressure of swimmers. We used descriptive statistics (placebo, median, mean, variance, and standard deviation) for analyzing data in order to compare changes of saturated percentage of blood cell. We collected data from pools of Mashhad and we used from 45 person for collecting ...

heavy metals are very important from environmental consideration due to their toxicity and accumulative properties. the aim of this study is the evaluation of spatial distribution of cr, co and ni in the surface soils of hamadan province. for this purpose, the surface soil samples (0-20 cm) were collected using systematic random sampling method and the concentration of heavy metals and some of ...

suitable soil structure is important for crop growth. one of the main characteristics of soil structure is the size of soil aggregates. there are several ways of showing the stability of soil aggregates, among which the determination of the median weight diameter of soil aggregates is the most common method. in this paper, a method based on adaptive neuro fuzzy inference system (anfis) was used...

this paper investigates the forecasting gold coin futures contract price in iran mercantile exchange. this research has presented a hybrid model based on genetic fuzzy systems (gfs) and artificial neural network (ann) to forecast the gold futures contract, at first, we use stepwise regression analysis (sra) to determine factors which have most influence on stock prices. at the next stage we div...

Main aim of this research was comparing mild swimming and recoveries Jacuzzis recovery on blood lactic acid and blood pressure of swimmers. We used descriptive statistics (placebo, median, mean, variance, and standard deviation) for analyzing data in order to compare changes of saturated percentage of blood cell. We collected data from pools of Mashhad and we used from 45 person for collecting ...

Metal matrix composites have been increasingly used as materials for components in automotive and aerospace industries because of their improved properties compared with non-reinforced alloys. During machining the selection of appropriate machining parameters to produce job for desired surface roughness is of great concern considering the economy of manufacturing process. In this study, a surfa...