Architecture is fundamental for fulfilling requirements related to the non-functional behavior of a software system such as the quality requirement that response time does not degrade to a point where it is noticeable. Approaches like the Architecture Tradeoff Analysis Method (ATAM) combine qualitative analysis heuristics (e.g. scenarios) for one or more quality metrics with quantitative analys...

This paper describes some difficulties that one encounters in the testing and maintenance of C++ programs, which may result in program unreliability. Inheritance and polymorphism are key concepts in objectoriented programming (OOP), and are essential for achieving reusability and extendibility, but they also make programs more difficult to understand. We have tried to show by arguments and by s...

in this paper, the matsumoto metric with special ricci tensor has been investigated. it is proved that, if  is ofpositive (negative) sectional curvature and f is of  -parallel ricci curvature with constant killing 1-form ,then (m,f) is a riemannian einstein space. in fact, we generalize the riemannian result established by akbar-zadeh.

We see the whole universe as a collection of very simple binary physical systems. With this assumption, we put forward a detailed model of discrete spaces. Our own universe with its four dimensions, shared between one time-like dimension and three space-like dimensions, as well as the Minkowski metrics, are emerging properties of the model.

The Chinese University of Hong Kong holds the copyright of this thesis. Any person(s) intending to use a part or the whole of the materials in this thesis in a proposed publication must seek copyright release from the Dean of the Graduate School. Abstract In this thesis, we address quality assurance issues in component-based software development. First, we propose a quality assurance (QA) model...

A lot of machine learning algorithms, including clustering methods such as K-nearest neighbor (KNN), highly depend on the distance metrics to understand data pattern well and make right decision based data. In recent years, studies show that can significantly improve performance or deep model in clustering, classification, recovery tasks, etc. this article, we provide a survey widely used chall...

There is a great deal of "hype" about the objectoriented paradigm offering all the solutions to the problems of software engineering. Goals of software engineering like reliability, maintainability, and reusability are said to be more easily achieved using this paradigm, than with traditional ones based on functional decomposition. In order to monitor whether these goals are indeed being achiev...

This study examines the rhythmic properties of highly proficient Spanish-English bilinguals. Ten Spanish-English bilinguals who live in the United States read aloud sentences in Spanish (their L1) and English (their L2), and ten Spanish and ten English monolingual control speakers read aloud sentences in their respective native languages. We performed an acoustic analysis of vocalic and consona...