We describe the design of a mobile collaborative tool that helps teams managing critical computing infrastructures in organizations, a task that is usually designated Business Continuity Management. The design process started with a requirements definition phase based on interviews with professional teams. The elicited requirements highlight four main concerns: collaboration support, knowledge ...

A fast and robust 3D retrieval method is proposed based on a novel weighted structural histogram representation. Our method has the following steps: 1) adaptively segment any 3D shape into a group of meaningful parts to generate local distribution matrixes, 2) integrate all the local distribution matrixes into a global distribution matrix, simultaneously considering their weight factors, and 3)...

This study aimed to compare the inactivation rate and the mechanisms of pathogenic bacteria in three matrixes (sawdust, rice husk and charcoal) during the composting process. The inactivation rate was evaluated with Escherichia coli strain and the damaged parts and/or functions were evaluated with three different media. Normalized inactivation rate constant in three media and from three matrixe...

Proficiency test results from 5 countries involving 61 separate interlaboratory proficiency tests for pesticide residues were examined in this study. A total of 24 different matrixes and 869 relative standard deviations of the mean (or median) pesticide residue concentration were statistically evaluated in relation to the Horwitz function. The aim was to determine whether or not the concentrati...

In rough set theory, attribute reduction is a basic issue, which aims to hold the discernibility of the attribute set. To obtain all of the reducts of an information system or a decision table, researchers have introduced many discernibility matrixes based reduction methods. However, the reducts in the sense of positive region can only be obtained by using the existing discernibility matrixes. ...

The subject of this paper is an experimental study of a discriminant analysis (DA) based on Gaussian mixture estimation of the class-conditional densities. Five parameterizations of the covariance matrixes of the Gaussian components are studied. Recommendation for selection of the suitable parameterization of the covariance matrixes is given.

It is necessary to utilize special techniques of separating submicron-size particles from other micron-size particles such as hydrocyclone and liquid-liquid separating. In this experimental work, separation of TiO2 and Al(OH)3 artificial mixture was investigated. Separation of submicron TiO2 particles from micron Al(OH)3 particles was carried out using a column bed filled with plastic fiber tub...

This paper develops and implements a multi-factor, Markov chain model for bond rating migrations and credit spreads. The building blocks are historical transition matrixes and a set of latent credit cycle variables. The model’s central feature is for transition matrixes to be time-varying, and driven by rating-specific latent variables which encompass such economic factors as the business cycle...

Bringing semantics to Web Services description and matching remarkably improves the recall and precision ratios of Service discovery. Though there are many effective semantic based Web Services matchmakers, they have poor time efficiency for consuming time in the semantic reasoning step. To shorten service matching time, this paper presents a fast matchmaker for OWL-S services, called XServices...

This paper presents a new mathematical model to solve cell formation problem in cellular manufacturing systems, where inter-arrival time, processing time, and machine breakdown time are probabilistic. The objective function maximizes the number of operations of each part with more arrival rate within one cell. Because a queue behind each machine; queuing theory is used to formulate the model. T...