When transacting and interacting through open computer networks, traditional methods used in the physical world for establishing trust can no longer be used. Creating virtual network substitutes with which people, org...
详细信息
FlowUML is a logic-based system to validate information flow policies at the requirements specification phase of UML based designs. It uses Horn clauses to specify information flow polices that can be checked against ...
详细信息
The aim of this paper is to introduce a new approach which describes an automatic transformation process of electronic flat documents (HTML document for example), into reusable learning objects. Thus, the transformed ...
详细信息
The aim of this paper is to introduce a new approach which describes an automatic transformation process of electronic flat documents (HTML document for example), into reusable learning objects. Thus, the transformed content can be integrated, within management learning system. Our methodology proposes, firstly, a syntactical transformation of a flat electronic document into well-structured document. It tends secondly, to perform a semantic categorization of each piece of the content into an equivalent type of reusable learning object (Ajami, 2004). Such a semantic categorization is based on the construction of artificial neural networks
H.264 is the new multimedia compression standard developed by VCEG and MPEG. In order to maximize the compression performance, H.264 adopts RDO mode decision techniques at the cost of very remarkable computational com...
详细信息
This paper proposes a new call quality measure based on mobile signal strength measurements to evaluate performance of handoff algorithms in wireless cellular networks. The proposed measure allows the quantification o...
详细信息
This paper proposes a new call quality measure based on mobile signal strength measurements to evaluate performance of handoff algorithms in wireless cellular networks. The proposed measure allows the quantification of the impact of the handoff algorithms of performance. Using the proposed measure we compare existing handoff algorithms to identify the trade-off between signal quality and required number of handoffs. Our results indicate that a handoff method based on a threshold with 2 dB hysteresis provides better performance compared to the conventional wisdom of 3 dB hysteresis. We provide a benchmark value for handoff algorithms based on an off-line heuristic method using the new measure. Our benchmark shows that there is substantial room for improvement of the existing handoff algorithm
In this paper we introduce Self-Organizing Map-based techniques that can reveal structural cluster changes in two related data sets from different time periods in a way that can explain the new result in relation to t...
详细信息
暂无评论