background: the best management for an ovarian mass is provided by appropriate prediction of malignancy. the aim of our study is to construct and validate a new malignancy probability score based on four simple sonographic findings and age. methods: in a cross sectional study; histopathological files of 3303 ovarian mass patients and tertiary hospitals, have reviewed within 6 years (2000-2006)....

logistic regression (lr) was used to model urban growth between the years 1987 and 2001 in gorgan city, north east of iran. three groups of variables including economic-social, land use and biophysical variables were used in the modeling practice. using covariance of the independent variables, distance to administrative and sporting centers plus distance to cities were removed. roc (relative op...

with the increasing installed capacity of desalination, the greenhouse gas emission for generating the required energy to power the desalination plants is also becoming the focus of attention in the world community. domestic reverse osmosis membranes have been very successful technology especially in the developing world to provide safe drinking water. the novel concept of photovoltaic powered ...

The municipal solid waste system is a complex reverse logistic chain which comprises several optimisation problems. Although these problems are interdependent – i.e., the solution to one of restricts other they usually solved sequentially in related literature because each computationally problem. We address two tactical planning this by means Benders decomposition approach: determining locatio...

The article describes the ways of industrial development in era transition from a linear model economy to circular model, as well new trends logistics. It shows interconnection processes production systems, logistics and services, their role ensuring sustainable green growth. is shown that by closing loop product lifecycles, reverse plays an important transitioning economy. presents example pla...

background and purpose: gastric cancer (gc) is one of the most common cancers worldwide and in iran. as conventional therapies such as surgery and chemotherapy are invasive with adverse effects, current studies are important as they are conducted to find natural compounds with few adverse effects. in this study, melittin with 26 amino acids was isolated and purified from bee venom and its effec...

background: we designed an algorithmic model based on the logistic regression analysis and a non-algorithmic model based on the artificial neural network (ann). materials and methods: the ability of these models was compared together in clinical application to differentiate malignant from benign breast tumors in a study group of 161 patients' records. each patient’s record consisted of 6 s...

This study proposes a self-adaptive image encryption algorithm based on the quantum logistic map. First, initial values are substituted into map an iteration process to generate three random sequences. After preprocessing, new sequences with better randomicity were obtained from generated In particular, correlation coefficients for before and after preprocessing compared determine best model ma...

In this paper, we introduce the concept of sparse bilinear logistic regression for decision problems involving explanatory variables that are two-dimensional matrices. Such problems are common in computer vision, brain-computer interfaces, style/content factorization, and parallel factor analysis. The underlying optimization problem is biconvex; we study its solution and develop an efficient al...