22 Resources for

university of massachusetts

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Memory Buddies: Exploiting Page Sharing for Server Consolidation in Virtualized Data Centers: Modern data centers increasingly employ virtualization in order to maximize resource utilization while reducing costs. With the advent of multi-core processors, memory has become the key limiting resource when running multiple virtual machines on a given server. This paper argues for exploiting page sharing to significantly reduce aggregate memory requirements...; Tags: Data Center, University Of Massachusetts, Data Centers, Storage, Server Consolidation, Servers, Hardware, Data Management; White papers 2008-01-28
A Three-Stage Load-Balancing Switch: This paper presents a three-stage load-balancing switch without the mis-sequencing problem. Analytical results indicate that this 3SLB switch is able to guarantee 100% throughput as an ideal OQ switch plus a bounded delay. Moreover, the switch architecture naturally minimizes the blocking problem without any scheduling computation. There is no speedup...; Tags: University Of Massachusetts, Fabric, Network Technology, Networking; White papers 2008-01-15
Understanding the Interaction Between Overlay Routing and Traffic Engineering: This paper studies the interaction between overlay routing and MultiProtocol Label Switching MPLS Traffic Engineering TE in a single Autonomous System AS. This interaction is formulated as a two-player non-cooperative non-zero sum game, where the overlay tries to minimize the delay of overlay traffic and TE's objective is to minimize...; Tags: Overlay, MPLS, University Of Massachusetts, Games, Networking, Personal Technology; White papers 2008-01-01
Prediction Based Routing for Vehicular Ad Hoc Networks: Development in short range wireless LAN WLAN and long range wireless WAN WWAN technologies have motivated recent efforts to integrate the two. This creates new application scenarios that were not possible before. Vehicles with only WLAN radios can use other vehicles that have both WLAN and WWAN radios as mobile...; Tags: Mobile, University Of Massachusetts, WLAN, Wireless LANs, LANs, Wi-Fi, Wireless, Advertising & Promotion, Networking, Marketing; White papers 2008-01-01
A Self-Tuning Structure for Adaptation in TCP/AQM Networks: Since Active Queue Management AQM Schemes are essentially feedback controllers, their impact on closed-loop behavior is directly related to the TCP congestion dynamic which, in turn, is strongly affected by network parameters such as link capacities and TCP loads. These parameters are non-stationary and in the absence of real-time estimates,...; Tags: Parameter, Network, University Of Massachusetts, TCP, Tcp/Ip, Networking; White papers 2007-01-01

On the Autocorrelation Structure of TCP Traffic: The statistical characteristics of network traffic - in particular the observation that it can exhibit long range dependence - have received considerable attention from the research community over the past few years. In addition, the recent claims that the TCP protocol can generate traffic with long rage dependent behavior has...; Tags: University Of Massachusetts, TCP, Tcp/Ip, Networking; White papers 2007-01-01
Providing Throughput Differentiation for TCP Flows Using Adaptive Two-Color Marking and Two-Level AQM: This paper proposes a new paradigm for a Differential Service DiffServ network consisting of two-color marking at the edges of the network using token buckets coupled with differential treatment in the core. Using fluid-flow modelling, the authors present existence conditions for token-bucket rates and differential marking probabilities at the core...; Tags: University Of Massachusetts, TCP, Core, Tcp/Ip, Networking, Performance Management, Human Resources, Workforce Management; White papers 2007-01-01
A Service-Oriented Design Framework for Secure Network Applications: Service Oriented Architecture SOA is an architectural style to reuse and integrate existing systems for designing new applications. Each application is designed in an implementation independent manner using two major abstract concepts: services and connections between services. In SOA, the non-functional aspects (e.g., security and fault tolerance) of services and...; Tags: Application, Network, University Of Massachusetts, SOA, Service-Oriented Architecture (SOA), Web Services, Middleware, UML, Enterprise Software, Software, Ooa/Ood/Oop, Software Development, Software/Web Development; White papers 2006-06-19
Modeling Non-Functional Aspects in Service Oriented Architecture: Service Oriented Architecture SOA is an architectural style to reuse and integrate subsystems in existing systems for designing new applications. Each application is designed in an implementation independent manner using abstract concepts: network services and connections between network services. In SOA, the non-functional aspects of services and connections should be...; Tags: Aspect, University Of Massachusetts, SOA, Modeling, Service-Oriented Architecture (SOA), UML, Web Services, Middleware, Enterprise Software, Software, Ooa/Ood/Oop, Software Development, Software/Web Development; White papers 2006-06-19
Proposal: Amherst Community Wireless Project: The Amherst Community Wireless project is a cooperative effort between UMass Amherst and the Town of Amherst. The goal of the project is to deploy a municipal wireless network covering the Town's 17 square miles of roads and facilities with wireless devices. This communication network will provide several major benefits...; Tags: University Of Massachusetts, Wi-Fi, Wireless; White papers 2006-03-09
MaxProp: Routing for Vehicle-Based Disruption-Tolerant Networks: Disruption-Tolerant Networks DTNs attempt to route network messages via intermittently connected nodes. Routing in such environments is difficult because peers have little information about the state of the partitioned network and transfer opportunities between peers are of limited duration. This paper proposes MaxProp, a protocol for effective routing of DTN...; Tags: Packet, Network, University Of Massachusetts, Peer, MaxProp, Networking; White papers 2006-01-09
Performance Modeling of Epidemic Routing: This paper develops a rigorous, unified framework based on Ordinary Differential Equations ODEs to study epidemic routing and its variations. These ODEs can be derived as limits of Markovian models under a natural scaling as the number of nodes increases. While an analytical study of Markovian models is quite complex...; Tags: Performance, University Of Massachusetts, Epidemic, Performance Management, Human Resources, Workforce Management; White papers 2005-11-27
Architecture and Scheduling Algorithm for a Multi-Channel Wireless Infrastructure Network With Diversity Management Layer: 802.11a protocol provides 12 non-overlapping frequency bands, but the common wireless LAN usually only uses one channel. This paper proposes a "super" Wi-Fi network architecture, which uses the multiple non-overlapping channels simultaneously to improve the total network bandwidth with minimum changes to the existing devices. To be compliable to the...; Tags: Algorithm, IEEE 802.11, Network, University Of Massachusetts, Wi-Fi Network, 802.11a Protocol, Wireless LANs, Wi-Fi, Wireless, Networking; White papers 2005-11-01
Procedure for Removing Spyware and Resolving Firewall Issues: Service Pack 2 (SP2) for Windows XP has kindly integrated both a firewall and pop-up blocker. Both can be easily turned off from the firewall icon that sits in the system tray bottom right corner. The pop-up blocker is integrated with the Internet Explorer IE browser as a new button...; Tags: University Of Massachusetts, Pop-up Blocker, Spyware, Firewalls, Network Security, Security, Viruses And Worms, Networking; White papers 2005-01-14
An online MBA program may work for you: Coupling IT skills with business knowledge can help managers bridge the technical and financial sides of any organization. An online MBA course that fits into your busy schedule may help you reach that goal.Many IT pros who want to earn a master’s of business administration MBA degree simply don’t have...; Tags: E-learning, Dana Norton, MBA, Georgia WebMBA, University of Massachusetts; Technical articles 2002-03-19
A Multipath Background Network Architecture: Background transfers, or transfers that humans do not actively wait on, dominate the Internet today. In today's best-effort Internet, background transfers can interfere with foreground transfers causing long wait times, thereby hurting human productivity. This paper presents the design and implementation of a background network, Harp, that addresses this problem....; Tags: Network, University Of Massachusetts, Network Architecture, Internet, Networking; White papers 2008-01-01
The Complex Envelope of a Bandlimited OFDM Signal Converges Weakly to a Gaussian Random Process: Orthogonal Frequency Division Multiplexing OFDM systems have been used extensively in wireless communications applications in recent years; thus, there is significant interest in analyzing the properties of the transmitted signal in such systems. In particular, a large amount of recent work has focused on analyzing the variation of the complex...; Tags: University Of Massachusetts, OFDM, Wireless; White papers
Scalability of Linux Event-Dispatch Mechanisms: Many Internet servers these days have to handle not just heavy request loads, but also increasingly face large numbers of concurrent connections. In this paper, the authors discuss some of the event-dispatch mechanisms used by Internet servers to handle the network I/O generated by these request loads. The authors focus...; Tags: Mechanism, University Of Massachusetts, Scalability, Linux, Internet, Open Source, UNIX, Operating Systems, Software; White papers
Handling Client Mobility and Intermittent Connectivity in Mobile Web Accesses: Wireless devices are being increasingly used to access data on the web. Since intermittent connectivity and client mobility are inherent in such environments, this paper examines the impact of these factors on coherent dissemination of dynamic web data to wireless devices. The paper introduces the notion of eventual-delta consistency, and...; Tags: Web, Dissemination, Mobile, University Of Massachusetts, Mobility, Evaluation, Client Mobility, Channel Management, Wi-Fi, Wireless, Marketing; White papers
University of Massachusetts Boosts Productivity, Improves Enterprise Visibility With Integrated IT System: Founded in 1863, the University of Massachusetts is a vital part of the educational, social, and economic development of the Commonwealth of Massachusetts. The university wanted to improve productivity across the university system to counterbalance a flat budget, offer the convenience of online self-service capabilities to prospective and current students,...; Tags: Oracle Corp., Information Technology, University Of Massachusetts, Strategy, Financial Management, Management, Financial Planning, Finance; Case studies

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TechRepublic Power Checklist: Securing Windows XP: If you have just finished installing Windows XP and you think the work is done, you're wrong. Some of the most important steps to getting Windows XP u ...; Buy Now