mammography has been recognized as the best method of screening for breast cancer, for a long time. although the sensitivity of mammography is acceptable, it has limited specificity and a radiologist should be aware of limitations and pitfalls. there are different positive findings in mammography which are descriptors of breast disease including benign lesions or breast cancer. in this talk i w...

In this paper, we present a new technique for the extraction of discontiguous sequential descriptors from text. We are able to form word sequences without any restriction on their size or on the distance between their components. Based on the concept of a maximal frequent sequence (MFS), our approach allows for the extraction of compact text descriptors of quality in a more efficient manner tha...

In this paper, the quantitative structure activity-relationship (QSAR) of the CCR2b receptor inhibitors was scrutinized. Firstly, the molecular descriptors were calculated using the Dragon package. Then, the stepwise multiple linear regressions (SW-MLR) and the genetic algorithm multiple linear regressions (GA-MLR) variable selection methods were subsequently employed to select and implement th...

a robust linear quantitative structure-property relationship (qspr) model has been constructed to model and predict the refractivity indices of 101 organic compounds as common halo-derivatives of normal paraffin by application of the structural descriptors combined with multiple linear regression (mlr) method. in the main part of this study, theoretical molecular descriptors were adopted from t...

in this work, the structural and electronic properties of folic acid molecule on functionalized (7,0)zigzag single-walled carbon nanotube was studied in gas phase on the basis of density functionaltheory (dft). furthermore, covalent interaction of folic acid with single-walled carbon nanotube wasinvestigated and its quantum molecular descriptors and binding energies were calculated. the dftb3ly...

the 13c chemical shifts for a series of compounds which includes carboxylic acids, aldehydes, ethers, ketones and hydrocarbons were simulated by using the parametric techniques. the observed chemical shifts were related to numerically encoded structural parametes called descriptors. two new electronic descriptors were added to the previous descriptors. ploting of experimental versus calculated ...

Introduction: Sniffin’ Sticks smell identification test is a tool used for evaluation of olfactory function but the results are culture-dependent. It relies on the subject’s familiarity to the odorant and descriptors. This study aims to develop the Malaysian version of Sniffin’ Sticks smell identification test suitable for local population usage. Materials and Methods:   The o...

Binary Logistic Regression (BLR) has been developed as non-linear models to establish quantitative structure- activity relationships (QSAR) between structural descriptors and biochemical activity of carbonic anhydrase inhibitors. Using a training set consisted of 21 compounds with known ki values, the model was trained and tested to solve two-class problems as active or inactive on the basi...

This paper presents issues related to modeling and optimization of the feature generator for the speaker recognition system (ASR – Automatic Speakers Recognition). The parameterization stage of generating a speech signal (features generation) is fundamental in this type of system because the unique vector of features is crucial in the process of speech recognition. The task is to describe the s...

The molecular descriptors family on structure activity relationships methodology was applied on ten cyclic organophosphorus compounds in order to predict theirs molar refraction. A number of 107692 significantly different MDF members enter into a multiple linear regression analysis. A pair of descriptors (lGDmSMt, lAmrfEt), which have the best performing ability in prediction of molar refractio...