with the explosive growth in amount of information, it is highly required to utilize tools and methods in order to search, filter and manage resources. one of the major problems in text classification relates to the high dimensional feature spaces. therefore, the main goal of text classification is to reduce the dimensionality of features space. there are many feature selection methods. however...

With the explosive growth in amount of information, it is highly required to utilize tools and methods in order to search, filter and manage resources. One of the major problems in text classification relates to the high dimensional feature spaces. Therefore, the main goal of text classification is to reduce the dimensionality of features space. There are many feature selection methods. However...

This paper addresses issue of sensitivity of efficiency classification of variable returns to scale (VRS) technology for enhancing the credibility of data envelopment analysis (DEA) results in practical applications when an additional decision making unit (DMU) needs to be added to the set being considered. It also develops a structured approach to assisting practitioners in making an appropria...

Abstract Fatigue is an important factor affecting modern flight safety. It can easily lead to a decline in the pilot's operational capabilities, misjudgments and illusions. Moreover, it may even cause serious accidents. In this paper, wearable wireless physiological device used obtain pilot electrocardiogram data simulated experiments. Bioelectric signals have higher reliability than image info...

The paper discusses the use of discrete-event simulation in design and operation of body and paint shops in North American Vehicle Assembly Plants. Two broad classifications are given on the use of simulation in body and paint shops. First classification is based on the stage of development of the system. Four categories are observed in this classification. Namely: conceptual design phase, deta...

Vega has been widely used in the Virtual Reality field. Its infrared (IR) module can implement IR simulation, but Vega IR imaging simulation’s general approach does not apply to the complex scene. This article deeps into the scene’s IR simulation method based on Vega. We design and realize a real time scene IR image simulation system in this article. We quantitatively define the scene as a simp...