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Analysis of Selective Routing Strategies for Fault Tolerance in Wireless Sensor Networks
Wireless sensor networks are intended to have large number of sensor nodes which are widely deployed in a distributed environment. Steep increase in number of nodes, which is a deviant to WSN eventually, affects the communication capability of the network as it raises the scalability issue. This at any instance may destabilize network throughput which leads to network failure. Therefore, fault-tolerant protocol is desperately needed to stabilize the dexterity of network. In this paper, the authors have examined the two prominent routing protocols DSDV and AODV which has been the inception for evolution of numerous routing protocols for wireless network environments.
May 1st, 2012 by Engg Journals PublicationsJettison: Efficient Idle Desktop Consolidation With Partial VM Migration
Idle desktop systems are frequently left powered, often because of applications that maintain network presence or to enable potential remote access. Unfortunately, an idle PC consumes up to 60% of its peak power. Solutions have been proposed that perform consolidation of idle desktop virtual machines. However, desktop VMs are often large requiring gigabytes of memory. Consolidating such VMs, creates bulk network transfers lasting in the order of minutes, and utilizes server memory inefficiently. When multiple VMs migrate simultaneously, each VM's experienced migration latency grows, and this limits the use of VM consolidation to environments in which only a few daily migrations are expected for each VM. This paper introduces Partial VM Migration, a technique that transparently migrates only the working set of an idle VM.
April 13th, 2012 by Association for Computing MachineryServer Virtualization: Increase IT Efficiency Through Virtual Data Center Automation
This paper explores the concept of Server virtualization technology that offers enormous possibilities for autonomic management of datacenter which runs a heterogonous mix of workloads through the availability of new automation mechanisms that can be exploited to control and monitor tasks running within virtual machines. The stress given on the fact to determine the extent to which a virtualization system limits the impact of a misbehaving virtual machine on other well-behaving virtual machines running on the same physical machine. Server virtualization consolidates the operations of many dispersed servers onto fewer physical machines Virtualization software decouples a server's operating system from its physical hardware to create a "Virtual machine".
April 1st, 2012 by International Journal of Computer Science and Information TechnologiesBoost Business Agility for IBM® WebSphere®
IBM's WebSphere software is one of the most successful middleware software suites for SOA business applications in e-Commerce, Financial Services, Telco and other industries. It includes the entire middleware infrastructure, including servers, services, and tools, needed to create, deploy, run, and monitor round-the-clock, enterprise-wide Web applications and crossplatform, cross-product solutions.
By reducing problem hotspots within WebSphere before they occur in the development process or by diagnosing and repairing them when they occur in test and production can improve the time-to-value and ROI for a WebSphere implementation by as much as 50% or more. It can also ensure that users are more satisfied with the performance of new or updated WebSphere applications, when deployed.
An Optimal RPC Based Approach to Increase Fault Tolerance in Wireless Ad-Hoc Network
In wireless network, fault tolerant topology control is an important and a challenging task. The wireless nodes and links could experience frequent failures since, wireless networks are usually deployed under extreme environments. Therefore, fault tolerance must be considered for many applications. In wireless network Topology control has been proved effective in saving node power. The main idea of topology control is that instead of using its maximal transmission power, each node sets its power to a certain level such that the global topology satisfies a certain constraint. To increase fault tolerance, nodes in the network will consume more power.
April 1st, 2012 by Academy & Industry Research Collaboration CenterReal-World Virtualization for Your Business
Small and midsize firms virtualize IT infrastructure to meet real-world challenges: simplifying operations to focus on business issues, speeding up application rollouts to get more done, safeguarding data and operations to stay open and productive, and saving money for the bottom line. It's a new way to think about IT—and getting started is easy, fast, and inexpensive, using VMware solutions designed for your real-world small or midsize business. Read this eBook to learn more.
March 30th, 2012 by VMwareSound and Precise Analysis of Parallel Programs Through Schedule Specialization
Parallel programs are known to be difficult to analyze. A key reason is that they typically have an enormous number of execution inter-leavings, or schedules. Static analysis over all schedules requires over-approximations, resulting in poor precision; dynamic analysis rarely covers more than a tiny fraction of all schedules. The authors propose an approach called schedule specialization to analyze a parallel program over only a small set of schedules for precision, and then enforce these schedules at run-time for soundness of the static analysis results. They build a schedule specialization framework for C/C++ multi-threaded programs that use P-threads.
March 26th, 2012 by Association for Computing MachineryMind the Gap: What is an ITIL® Gap Analysis?
Organizations adopting ITIL best practices almost always ask, "Where do I begin?". The answer is a gap analysis. ITIL describes a gap analysis as a means of identifying areas where an organization falls short of its long-term vision. This white paper describes what a gap analysis is, what it entails, and the methodology behind it. There is also a discussion of the benefits of conducting a gap analysis.
March 12th, 2012 by Global KnowledgeNavigating the New Normal of Mainframe
In this webcast, the presenters explain how to plan for business risks associated with the new normal by: bringing novice programmers up to speed more quickly, Invigorating the productivity of the veteran programmers, and leveraging industry-leading tools for accessing z/OS, source code editing, debugging, editing and browsing data, and more
March 8th, 2012 by SHAREError Detection & Correction in Wireless Sensor Networks by Using Residue Number Systems
Wireless Sensor Networks have potential of significantly enhancing the people ability to monitor and interact with their physical environment. Realizing a fault tolerant operation is critical to the success of WSNs. The integrity of data has tremendous effects on performance of any data acquisition system. Noise and other disturbances can often degrade the information or data acquired from these systems. Devising a fault-tolerant mechanism in wireless sensor networks is very important due to the construction and deployment characteristics of these low powered sensing devices. Moreover, due to the low computation and communication capabilities of the sensor nodes, the fault-tolerant mechanism should have a very low computation overhead.
March 1st, 2012 by mecs-pressKeep up with ZDNet Australia
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