this study aimed at exploring the main sources of acute stress in wrestlersregarding the structure and the assessment of reliability and validity of the sourcesof acute stress in wrestlers questionnaire (saswq). for this purpose, thisquestionnaire was distributed among a sample of 330 wrestlers (mean age21.56+5.3) in tehran who were selected by multistage random sampling method.analysis of data...

The large volume of images used in Distance Learning System are required to be compressed in a good ratio to release the storage loading of computer servers. A new image coding Scheme based on Principle Components Analysis (PCA) and Wavelet decomposition is proposed in this paper. Our algorithm includes 1) Principle Components Analysis (PCA)to reduce the information redundancies along temporal ...

∗ Department of Production Engineering, Faculty of Engineering King Mongkut's Institute of Technology North Bangkok Abstract This paper describes a one-dimensional distributive tactile system that can be used to determine simple contact parameters such as weight, size and position. The system is a simply supported beam on which load position was determined from the induced deflection. This rese...

Diagnosis method based on Principal Component Analysis (PCA) has been widely developed. However, this method deals only with data which are described by single-valued variables. The purpose of the present paper is to generalize the diagnosis method to interval PCA. The fault detection is performed using the new indicator [SPE]. To identify the faulty variables, this work proposes a new method b...

abstract reference evapotranspiration (eto) is an essential parameter required for proper management of agricultural crop irrigation. eto is influenced by many different hydrological variables and as a result is a very complex procces. eto is usually estimated by empirical or process-orinented models (mathematical relationships) from historical weather data. the need for accurate estimates of e...

The main purpose of this study is to evaluate the financial Performance of four listed Taiwanese airline companies by combining grey theory and principal component analysis. The absolute degree of grey incidence (ADGI) matrix was introduced to replace the correlation matrix of the traditional PCA, and build an evaluation model of grey principle component analysis (GPCA). Based on this model, th...

In this study, blind code extraction of Direct Sequence Code Division Multiple Access (DS-CDMA) signals is considered, based on Independent Component Analysis (ICA) method. In order to distinguish between correct and incorrect extracted codes, to estimate the number of active users and also to determine the quality of detection along with the ICA based blind detection procedure, some propositio...

Numerous organizations collect and share large amounts of data due to the proliferation of information technologies and internet. The information extracted from these databases through data mining process may reveal private information of individuals. Privacy preserving data mining is a new research area, which allows sharing of privacy-sensitive data for analysis purpose. In this paper a hybri...