نتایج جستجو برای: competitive

تعداد نتایج: 90766  

1999
Pedro Conceição Manuel V. Heitor Pedro Oliveira

Most developed countries exhibit high rates of R&D performed in industry, but the situation is considerable different in medium income countries such as Portugal. Despite the lower levels of R&D, Portuguese firms have increased their competitiveness, and the country has been able to show remarkable levels of economic performance. This paper provides a framework to analyze the way in which R&D i...

2001
Zhiyong Liu Lei Xu

Mining local structure is important in data analysis. Gaussian mixture is able to describe local structure through the covariance matrices, but when used on highdimensional data, fitly specifying such a large number of d(d + 1)=2 free elements in each covariance matrix is difficult. In this paper, by constraining the covariance matrix in decomposed orthonormal form, we propose a Local PCA algor...

Journal: :Theor. Comput. Sci. 2015
Wenming Zhang E. Zhang Feifeng Zheng

Article history: Received 5 April 2015 Received in revised form 30 May 2015 Accepted 2 June 2015 Available online 9 June 2015 Communicated by D.-Z. Du

Journal: :Computers & Education 2009
Hercy N. H. Cheng Winston M. C. Wu Calvin C. Y. Liao Tak-Wai Chan

Competition, despite its potential drawbacks, is an easily adopted and frequently used motivator in classrooms. Individual abilities, in the years of schooling, are inevitably different, and performance in competition is heavily ability dependent, resulting that more-able students always win while less-able students always lose. Students easily perceive how well they perform through the result ...

Journal: :Theor. Comput. Sci. 2003
Bernhard Fuchs Winfried Hochstättler Walter Kern

We prove a lower bound ρ ≥ 9.001 for the competitive ratio of the so-called online matching problem on a line. As a consequence, the online matching problem is revealed to be strictly more difficult than the “cow problem”.

Journal: :J. Inf. Sci. Eng. 2009
Ching-Hwang Wang Chih-Han Kao

This paper modified the mechanism of weight adjusting of the Self-Organizing Mapping network (SOM) for solving the problems of topology preserving and clarifying boundary of clustering graph for the clustering analysis. The modified SOM is named the Multiple Clustering Centers SOM (MCC-SOM). The MCC-SOM changed the competitive learning mechanism of “winner takes all” to allow the more one clust...

2008
Janet Carter Nick Efford Stephan Jamieson Tony Jenkins

A significant challenge that faces any teacher of introductory programming is the diversity of the class. At one extreme there will be students who have never programmed before, while at the other there will be students who have many years experience of programming. Handling this diversity is difficult. The temptation for the instructor is often to focus on the novice group and to assume that t...

2010
Sherry Stephenson

Most people approach the issue of competitiveness by attempting to define what it is or what it should be. However, it is also interesting to approach the matter from a different angle by examining what factors are not essential in establishing a country’s competitiveness on world markets. While certain factors are certainly helpful for promoting competitiveness, they nonetheless should not be ...

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