wind erosion climatic factor is a measure of climatic factors explaining the wind erosion erosivity. humidity and wind speed are climatic characteristics that must be considered as the erosion parameters. in this study, linear moment analysis (l-moments) and wind erosion climatic factor were used to evaluate the regional climate’s tendency effect on wind erosion in yazd province. wind erosion c...

response modification factor (r factor) is one of the seismic design parameters to be considered in evaluating the performance of buildings during strong motions. this paper has tried to evaluate the response modification factor of concrete coupled shear wall structures with various length/depth ratios of spandrel beams. the effect of diagonal reinforcement of spandrel beam was also evaluated o...

The Zouzan area is located in the SE of Torbat-e- Heydarieh city (NE Iran). This area is located on north part of the Lut block which consists of basaltic andesite, tuff and porphyritic andesite. The purpose of this research is to investigate the enrichment of metal elements in the Zouzan area and provide a metallic geochemical model. For this purpose, 488 stream samples were analyzed using by ...

The purpose of this study is to determine geochemical anomalies on lithogeochemical data from Ardestan area, Central Iran, using concentration-number (C-N) fractal modeling and staged factor analysis. Staged factor analysis is used to the recognition of genetic correlation and elimination of non-indicator elements in three steps. Factor scores of elements were calculated and geochemical data cl...

the present research is concerned with the determination of ductility, over-strength and response modification factors of coupled steel shear wall frames. three structural models with various numbers of stories, bay width and coupling beam height were analyzed using static pushover and incremental nonlinear dynamic analyses. the ductility, over-strength and response modification factors for the...

Since direct experimental evidence is not available, this must be verified through a modeling approach, providedadequate data be available. Many statistical methods are used to study the relation between independent anddependent variables.This research was carried out at the western part of Jazmurian basin tlocated in the southeast ofIran. In this paperused ten physical characteristics such as ...

measurements of pb, cu, zn, as, ni, hg, and fe heavy metals and major elements and components such as ca, hco3, so4, na, k, mg and cl in soluble rain fractions were performed on rainwater collected at arak plain during the rainy seasons of 2012. concentrations of the heavy metals in the soluble fractions decreased for fe, pb, zn, ni, cu, as and hg, respectively and the major elements and compon...

In this paper, we introduce the HashRF(p, q) algorithm for computing RF matrices of large binary, evolutionary tree collections. The novelty of our algorithm is that it can be used to compute arbitrarilysized (p × q) RF matrices without running into physical memory limitations. In this paper, we explore the performance of our HashRF(p, q) approach on 20,000 and 33,306 biological trees of 150 ta...

Stress from brace treatment in patients with adolescent idiopathic scoliosis (AIS) can deteriorate their quality of life. A Japanese version the Bad Sobernheim Questionnaire–Brace (JBSSQ–brace) was developed to assess stress for AIS. However, specific factors causing under have remained unknown. We enrolled 69 consecutive assessed by JBSSQ–brace and Scoliosis Research Society–22 (SRS–22) instru...