science and technology
London: Card fraud hotspot
News He said: "Police have focused on these problems in these areas and it has worked, it backs up what the House of Lords science and technology committee said about the need for more policing in this area. [24 Jul 2008]
Making IT Invisible: NetApp Storage for Virtual Server Environments
White Paper To make IT invisible, consider a popular science experiment that demonstrates the different states of matter as we learn how water changes from a solid to a liquid. Server virtualization is one such technology that provides liquidity to IT by... [24 Jul 2008]
DiffServ QoS Provisioning for Real Time Traffic in Frequent Handoff MobileIPv6 Networks
White Paper Two major challenges in establishing such a wireless mobile Internet are support of fast handoff and provision of Quality of Service (QoS) over IP-based wireless access networks. Testbed has been set up to support the architecture and evaluate the... [18 Jul 2008]
A QoS Control Method With Path Selection Reflecting Network States
White Paper Especially, it is a key technology that guarantees for real-time communication reducing latency and minimizing jitters. Nowadays, there is a variety of clients which performance is widely varied in the Internet and the Intranet. [17 Jul 2008]
Photos: Inside a supercomputer lab
Photo Near the Oak Ridge supercomputer facility is this giant display, known as Everest, or Exploratory Visualisation Environment for Research in Science and Technology. This photo story is a peek into one of the world's great supercomputer labs housed... [14 Jul 2008]
A Grid Authorization Model for Science Gateways
White Paper Since the number of TeraGrid Science Gateways is expected to grow at least an order of magnitude in the next few years, a lightweight gateway deployment model is sought, one that facilitates growth but meets the security requirements of the TeraGrid. [11 Jul 2008]
Impacts of TCP on High Bandwidth Digital Video Stream
White Paper Many high bandwidth digital video applications have used UDP as transport layer protocol, and been considered as unresponsive flows. So, many researchers' works on how unresponsiveness of digital video flow impacts on typical Internet traffic which... [11 Jul 2008]
A Bandwidth Efficient Modulation Scheme Using Quasi-Orthogonal Sequences
White Paper High bandwidth efficiency and quasi-orthogonality between the modulation symbols allows to increase the normalized data rate with little or no degradation in the required signal-to-noise ratio per bit to achieve a given error probability compared... [11 Jul 2008]
A Class-Based Dynamic Bandwidth Allocation Scheme for EPONs
White Paper In an Ethernet Passive Optical Network (EPON), all Optical Network Units (ONUs) share one uplink channel to transmit multiple traffic. To avoid data collision, a contention-free MAC protocol is needed to schedule the transmission order of different... [11 Jul 2008]
Advanced Design Methods of Doherty Amplifier for Wide Bandwidth, High Efficiency Base Station Power Amplifiers
White Paper First, the paper develops Doherty amplifier with uneven power drive which is provided more input power to the peaking cell than the carrier cell for full power operation and appropriate load modulation. [11 Jul 2008]
A Rate Control Scheme for H.264 Video Under Low Bandwidth Channel
White Paper The dilemma of the Quantization Parameter (QP) being involved in both rate control and Rate-Distortion Optimization (RDO) prevents using the traditional rate control scheme. Although some rate control schemes are proposed to circumvent the dilemma... [11 Jul 2008]
Load Balancing on Open Networks: A Mobile Agent Approach
White Paper Use of the Internet and the World-Wide-Web (WWW) has become widespread in recent years and mobile agent technology has proliferated at an equally rapid rate to evenly distribute the requests to web servers through load balancing. [11 Jul 2008]
Load Balancing Strategies for Parallel SAMR Algorithms
White Paper Highly resolved numerical solutions of partial differential equations are important in many areas of science and technology. Therefore the application-specific load-balancing problem is analyzed more deeply in order to adapt and integrate existing... [10 Jul 2008]
Improving Performance of a Dynamic Load Balancing System by Using Number of Effective Tasks
White Paper Efficient resource usage is a key to achieving better performance in cluster systems. Previously, most research in this area has focused on balancing the load of each node to use the resources of an entire system more effectively. [10 Jul 2008]
A Wireless Secure Remote Access Architecture Implementing Role Based Access Control: WiSeR
White Paper Security of the proposed architecture is based on Virtual Private Network technology and a special role based access control mechanism with location and time constraints. This proposed architecture offers a very promising solution for organizations... [10 Jul 2008]
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