Siffness matrices for axial and bending deformations of a beam having a rectangular cross sectional area of constant width and linearly varying thickness are developed. A consistant load vector for a uniformly distributed lateral load is also calculated, using the principal of potential energy. The matrices are used to obtain numerical results for a variety of beams with non-uniform thickness t...

According to the water resources and climate change and challenges of Urmia Lake basin, which is the discharge and final destination of North West Rivers, a model was presented. Due to climate change and water resources in river basin such as rainfall, climate change in basin that has direct impact on evaporation over water catchment areas and lake water, this model can be provided. In addition...

Background: This study aims to determine the pathologists’ agreement of modified Black nuclear grading system and Holland classification applied to cases of ductal carcinoma in situ (DCIS). Methods: Forty-three cases of breast lesions diagnosed as DCIS were selected to interobserver analysis. Eight pathologists received the same set of digitized images from microscopy of DCIS cases, and answere...

background: the aim of this study was to compare the accuracy of the apex-locating functions of dentaport zx, raypex 5 and endo master electronic apex locators (eals) in vitro. materials and methods: thirty extracted human single-rooted teeth with mature apices were used for the study. the real working length (rwl) was established by subtracting 0.5 mm from the actual root canal length. all tee...

Congestion of the radio-frequency spectrum has made necessary the sharing of many frequency bands between different radio services, and between the different operators of similar radio services. In order to ensure the satisfactory coexistence of the terrestrial and Earth-space systems involved, it is important to be able to predict with reasonable accuracy the interference potential between the...

ezetimide belongs to a class of lipid lowering compounds that selectively inhibits intestinal absorption of cholesterol and related phytosterols. the purpose of this study is to establish a reliable and quick method for the assignment of ezetimibe in tablets form by high performance liquid chromatography with ultraviolet detection (hplc-uv). a rapid and sensitive hplc method has been developed ...

We derive standards for acceptable measurement error when inferring treatment effects from sample means. The standards arise from the amount of measurement accuracy required for sample means to beat a näıve benchmark estimator that randomizes the direction and magnitude of treatment effects. We show that at sample and effect sizes common to many areas of psychology, particularly in human subjec...

Accuracy alone is insufficient to evaluate the performance of a classifier especially when the number of classes increases. This paper proposes an approach to deal with multi-class problems based on Accuracy (C) and Sensitivity (S). We use the differential evolution algorithm and the ELM-algorithm (Extreme Learning Machine) to obtain multi-classifiers with a high classification rate level in th...