- Subscribe to this page:
- RSS
- Email Alert
University of California
(1028 results)-
White Papers
HiperSense: An Integrated System for Dense Wireless Sensing and Massively Scalable Data Visualization
September 11, 2009, 12:00am PDT
HiperSense is a system for sensing and data visualization. Its sensing part is comprised of a heterogeneous Wireless Sensor Network (WSN) as enabled by infrastructure support for handoff and...
Provided by University of California
-
White Papers
Multimodal Visualization of DTI and FMRI Data Using Illustrative Methods
April 17, 2009, 12:00am PDT
Designing multimodal visualizations combining anatomical and functional brain data is a demanding task. Jainek et al. applied illustrative rendering techniques to obtain a high-quality...
Provided by University of California
-
White Papers
Error-Resilient LZW Data Compression
January 1, 2010, 12:00am PST
As many practitioners know, compressed streams are very sensitive the transmission errors. Even a single error can have devastating effects and compromise all the data downstream. In fact, the...
Provided by University of California
-
White Papers
Power Efficiency With Correlated Data Compression in Sensor Networks
February 19, 2010, 12:00am PST
One of the main constraints for wireless sensor networks is its power budget, which creates a tradeoff on the amount of data the sensor network can transmit and the amount of time that it is...
Provided by University of California
-
White Papers
Skeleton-Based Data Compression for Multi-Camera Tele-Immersion System
March 14, 2008, 12:00am PDT
Image-based full body 3D reconstruction for tele-immersive applications generates large amount of data points, which have to be sent through the network in real-time. This paper introduces a...
Provided by University of California
-
White Papers
Automated Spyware Collection and Analysis
August 18, 2009, 12:00am PDT
Various online studies on the prevalence of spyware attest overwhelming numbers (up to 80%) of infected home computers. How-ever, the term spyware is ambiguous and can refer to anything from...
Provided by University of California
-
White Papers
Autonomous Network Management Using Cooperative Learning for Network-Wide Load Balancing in Heterogeneous Networks
August 14, 2008, 12:00am PDT
Traditional hop-by-hop dynamic routing makes inefficient use of network resources as it forwards packets along already congested shortest paths while uncongested longer paths may be underutilized....
Provided by University of California
-
White Papers
Network Architecture, Salience and Coordination
November 19, 2008, 12:00am PST
This paper reports the results of an experimental investigation of monotone games with imperfect information. Players are located at the nodes of a network and observe the actions of other players...
Provided by University of California
-
White Papers
A Multi-Radio 802.11 Mesh Network Architecture
January 1, 2010, 12:00am PST
Routers equipped with multiple 802.11 radios can alleviate capacity problems in wireless mesh networks. However, a practical, complete system architecture that can realize the benefits of multiple...
Provided by University of California
-
White Papers
DMesh: A Diagonally-Linked Mesh Network-on-Chip Architecture
October 10, 2008, 12:00am PDT
This paper proposes a new mesh-typed NoC architecture which aims at enhancing network performance while keeping implementation cost feasible. The result is a Diagonally-linked mesh (DMesh) NoC...
Provided by University of California
-
White Papers
Exploring Uncertainty Visualization in Large Data Sets
March 16, 2008, 12:00am PDT
This is a proposal to renew and extend the current project with LANL on uncertainty visualization of large data sets. The size of the data sets and the uncertainty in the data sets come from the...
Provided by University of California
-
White Papers
Optical Label Switching Technology and Energy-Efficient Future Networks
September 1, 2009, 12:00am PDT
The future Internet is rapidly emerging with a new set of very challenging requirements. It must support exponentially rising traffic volume with scalability, performance, and low power...
Provided by University of California
-
White Papers
TCP Performance in Wireless Multi-Hop Networks
November 6, 2007, 12:00am PST
In recent years, wireless networks have become increasingly common and an increasing number of devices are communicating with each other over lossy links. Unfortunately, TCP performs poorly over...
Provided by University of California
-
White Papers
Ultimate Spectral Efficiency Limits in DWDM Systems
July 12, 2008, 12:00am PDT
The overall capacity (b/s) of a DWDM transmission system is governed by the available bandwidth (Hz) and by the achievable spectral efficiency (b/s/Hz). Ultimate limits to the spectral efficiency...
Provided by University of California
-
White Papers
iPhish: Phishing Vulnerabilities on Consumer Electronics
March 19, 2008, 12:00am PDT
As consumer electronic devices with embedded browsers become popular, financial institutions and online merchants set up websites to accommodate visitors using these devices. These devices range...
Provided by University of California
-
White Papers
What's New About Cloud Computing Security?
January 20, 2010, 12:00am PST
While the economic case for cloud computing is compelling, the security challenges it poses are equally striking. This paper strives to frame the full space of cloud-computing security issues,...
Provided by University of California
-
White Papers
Rain: A Workload Generation Toolkit for Cloud Computing Applications
February 10, 2010, 12:00am PST
Existing workload generation tools are not flexible enough to generate workloads that vary in three key dimensions relevant for making resource allocation decisions for Cloud Computing...
Provided by University of California
-
White Papers
MobiVis: A Visualization System for Exploring Mobile Data
December 20, 2007, 12:00am PST
The widespread use of mobile devices brings opportunities to capture large-scale, continuous information about human behavior. Mobile data has tremendous value, leading to business opportunities,...
Provided by University of California
-
White Papers
Financial Analysis Using SAS PROCS
March 19, 2010, 12:00am PDT
Financial services industry is interested in analyzing vast financial data including price trends from stock exchanges around the world. SAS analytical and graphical tools are extremely useful to...
Provided by University of California
-
White Papers
Using "Recycled Predictions" for Computing Marginal Effects
April 6, 2010, 12:00am PDT
A conventional way to estimate the marginal effect of a risk factor is to omit the risk factor (e.g., gender, treatment) from the multivariate model and then use the omitted risk factor as...
Provided by University of California
-
Case Studies
Code-Red: A Case Study on the Spread and Victims of an Internet Worm
January 1, 2010, 12:00am PST
On July 18, 2001, Code-Red (CRv2) worm took less than 14 hours to infect more than 359,000 internet connected computers, resulting in damage worth more than $2.6 billion. The case study tries to...
Provided by University of California
-
White Papers
Applying NOX to the Datacenter
October 2, 2009, 12:00am PDT
It is evident today that internet datacenters have brought about a revolution in computing power and have attained supremacy in handling data-intensive computational tasks. Being the challenging...
Provided by University of California
-
White Papers
Towards Low Latency State Machine Replication for Uncivil Wide-area Networks
May 12, 2009, 12:00am PDT
This paper is intended to study the design principle of a low-latency Byzantine state machine protocol, called RAM, for this system model. The aim of this report is to reflect on the difficulty of...
Provided by University of California
-
White Papers
FiConn: Using Backup Port for Server Interconnection in Data Centers
January 19, 2009, 12:00am PST
Though it is known that the aim of data centres is to connect multitude servers at low cost, high network capacity having numerous online applications; the present tree-base solution is unable to...
Provided by University of California
-
White Papers
Data Center Switch Architecture in the Age of Merchant Silicon
July 14, 2009, 12:00am PDT
For massively parallel workloads, the principal bottleneck is often not the performance of individual nodes but the rate at which these nodes can exchange data over the network. Many Data Center...
Provided by University of California
-
White Papers
AppScale: Scalable and Open AppEngine Application Development and Deployment
October 23, 2009, 12:00am PDT
Cloud Computing refers to the service-oriented cluster computing based on Service-Level Agreements (SLAs). Through cloud computing, the use of large-scale distributed systems is made simple...
Provided by University of California
-
Whitepapers
In-Situ MapReduce for Log Processing
April 27, 2011, 12:00am PDT
Log analytics are a bedrock component of running many of today's Internet sites. Application and click logs form the basis for tracking and analyzing customer behaviors and preferences, and they...
Provided by University of California
-
White Papers
Efficient and Safe Data Backup With Arrow
June 12, 2008, 12:00am PDT
Content-addressable storage, error detection and correction, and deduplication are all interesting topics in the field of archival data storage. Arrow implements a data backup system that combines...
Provided by University of California
-
White Papers
Maintaining Routing Tree in IEEE 802.16 Centralized Scheduling Mesh Networks
January 5, 2009, 12:00am PST
Centralized scheduling is based on a routing tree to offer centralized control. The IEEE 802.16 mesh mode supports two scheduling mechanisms, namely centralized scheduling and distributed...
Provided by University of California
-
White Papers
A Family of Dunces: Trivial RFID Identification and Authentication Protocols
December 5, 2008, 12:00am PST
RFID technology is rapidly becoming ubiquitous. In the near future, it is expected to replace barcodes as the most common means of product and merchandise identification. Current and emerging...
Provided by University of California
-
White Papers
Service Continuity and Disaster Recovery Plan
April 24, 2009, 12:00am PDT
The Grunigen Medical Library has significant public services that would be compromised during catastrophic failures due to a weather event, a public health threat, or a power outage. The purpose...
Provided by Regents of the University of California
-
White Papers
A Geoscience Perspective on Immersive 3D Gridded Data Visualization
February 7, 2008, 12:00am PST
The authors describe visualization software, Visualizer that was developed specifically for interactive, visual exploration in immersive Virtual Reality (VR) environments. Visualized uses...
Provided by University of California
-
White Papers
Parallelizing the Web Browser
March 6, 2009, 12:00am PST
Authors of this paper argue that the transition from laptops to handheld computers will happen only if they rethink the design of web browsers. Web browsers are an indispensable part of the...
Provided by University of California
-
White Papers
Towards a More Functional and Secure Network Infrastructure
January 1, 2010, 12:00am PST
This paper proposes an overlay network infrastructure that provides better protection against DoS attacks as well as more functionality than today's Internet. The solution is based on three simple...
Provided by University of California
-
White Papers
Cost-Distance: Two Metric Network Design
August 6, 2008, 12:00am PDT
This paper present the Cost-Distance problem: finding a Steiner tree which optimizes the sum of edge costs along one metric and the sum of source-sink distances along an unrelated second metric....
Provided by University of California
-
White Papers
Toward a Unified Ontology of Cloud Computing
October 13, 2008, 12:00am PDT
Progress of research efforts in a novel technology is contingent on having a rigorous organization of its knowledge domain and a comprehensive understanding of all the relevant components of this...
Provided by University of California
-
White Papers
XL: An Efficient Network Routing Algorithm
July 12, 2008, 12:00am PDT
In this paper, authors present a new link-state routing algorithm called Approximate Link state (XL) aimed at increasing routing efficiency by suppressing updates from parts of the network. They...
Provided by University of California
-
White Papers
Query-Driven Visualization of Large Data Sets
January 1, 2010, 12:00am PST
This paper presents a practical and general-purpose approach to large and complex visual data analysis where visualization processing, rendering and subsequent human interpretation is constrained...
Provided by University of California
-
White Papers
Somniloquy: Augmenting Network Interfaces to Reduce PC Energy Usage
February 26, 2009, 12:00am PST
Reducing the energy consumption of PCs is becoming increasingly important with rising energy costs and environmental concerns. Sleep states such as S3 (suspend to RAM) save energy, but are often...
Provided by University of California
-
White Papers
Augmenting Network Interfaces to Reduce PC Energy Usage
May 8, 2008, 12:00am PDT
Reducing the energy consumption of PCs is becoming increasingly important with rising energy costs and environmental concerns. Sleep states such as S3 (suspend to RAM) save energy but prevent the...
Provided by University of California
-
Whitepapers
The Selective Intermediate Nodes Scheme for Ad Hoc On-Demand Routing Protocols
January 1, 2012, 12:00am PST
The on-demand routing schemes in mobile ad hoc networks are appealing because of the lower routing overhead, compared with traditional proactive schemes. The on-demand routing protocols introduce...
Provided by University of California
-
Whitepapers
AODV-BR: Backup Routing in Ad Hoc Networks
October 11, 2008, 12:00am PDT
Nodes in mobile ad hoc networks communicate with one another via packet radios on wireless multi-hop links. Because of node mobility and power limitations, the network topology changes frequently....
Provided by University of California
-
Whitepapers
OppSense: Information Sharing for Mobile Phones in Sensing Field With Data Repositories
April 21, 2011, 12:00am PDT
With the popularity and advancements of smart phones, mobile users can interact with the sensing facilities and exchange information with other wireless devices in the environment by short range...
Provided by University of California
-
Whitepapers
Context-Aware Sensor Data Dissemination for Mobile Users in Remote Areas
March 18, 2012, 12:00am PDT
Many mobile sensing applications consider users reporting and accessing sensing data through the Internet. However, WiFi and 3G connectivities are not always available in remote areas. Existing...
Provided by University of California
-
Whitepapers
Learning in a Changing World: Restless Multi-Armed Bandit With Unknown Dynamics
November 1, 2011, 12:00am PDT
The authors consider the Restless Multi-Armed Bandit (RMAB) problem with unknown dynamics in which a player chooses one out of N arms to play at each time. The reward state of each arm transits...
Provided by University of California
-
Whitepapers
Intrusion Detection in Resource-Constrained Cyber Networks: A Restless Multi-Armed Bandit Approach
April 6, 2012, 12:00am PDT
The authors consider a large-scale cyber network with N components. Each component is either in a healthy state (0) or an abnormal state (1). Due to intrusions, the state of each component...
Provided by University of California
-
Whitepapers
Synthesis of Embedded Networks for Building Automation and Control
March 26, 2008, 12:00am PDT
The authors present a methodology and a software framework for the automatic design exploration of the communication network among sensors, actuators and controllers in building automation...
Provided by University of California
-
Whitepapers
Outage-Based Rate Maximization in CDMA Wireless Networks
October 29, 2008, 12:00am PDT
The problem of maximizing the sum of the transmit rates while limiting the outage probability below an appropriate threshold is investigated for networks where the nodes have limited processing...
Provided by University of California
-
White Papers
A Multistate Multipath Provisioning Scheme for Combating Node Failures in Telecom Mesh Networks
June 14, 2009, 12:00am PDT
Telecommunication networks spanning large areas are subject to various failures. A survivable network provisioning scheme addressing multiple levels of network failures, especially disaster...
Provided by University of California
-
White Papers
Survivable Multipath Traffic Grooming in Telecom Mesh Networks With Inverse Multiplexing
November 19, 2009, 12:00am PST
The authors investigate the survivable traffic grooming problem with inverse multiplexing in next-generation SONET/SDH networks employing Wavelength-Division Multiplexing (WDM). With support of...
Provided by University of California
-
White Papers
A Multistate Multipath Provisioning Scheme for Differentiated Failures in Telecom Mesh Networks
November 11, 2009, 12:00am PST
Telecommunication networks spanning large areas are subject to various failures, such as natural disasters, operation errors, and malicious attacks. Disaster Failures (DF) are defined as failures...
Provided by University of California
-
White Papers
Adaptive Reliable Multipath Provisioning in Survivable WDM Mesh Networks
May 26, 2009, 12:00am PDT
The authors investigate the problem of adaptive reliable multipath provisioning in next-generation backbone mesh networks employing optical Wavelength-Division Multiplexing (WDM) and...
Provided by University of California
-
White Papers
Routing Mechanisms for Mobile Ad Hoc Networks Based on the Energy Drain Rate
January 1, 2012, 12:00am PST
Untethered nodes in mobile ad-hoc networks strongly depend on the efficient use of their batteries. In this paper, the authors propose a new metric, the drain rate, to forecast the lifetime of...
Provided by University of California
-
White Papers
Fisher-Information-Matrix Based Analysis of Semiblind MIMO Frequency Selective Channel Estimation
June 21, 2011, 12:00am PDT
The authors present a study of Semi-Blind (SB) estimation for a Frequency-Selective (FS) Multiple-Input Multiple-Output (MIMO) wireless channel using a novel Fisher-Information Matrix (FIM) based...
Provided by University of California
-
White Papers
Reliable On-Demand Multicast Routing With Congestion Control in Wireless Ad Hoc Networks
October 12, 2008, 12:00am PDT
In this paper, the authors address the congestion control multicast routing problem in wireless ad hoc networks through the Medium Access Control (MAC) layer. They first introduce the Broadcast...
Provided by University of California
-
White Papers
Delay-Optimized Network Coding for Video Streaming Over Wireless Networks
February 10, 2010, 12:00am PST
In this paper, the authors study delay-optimized network coding for video streaming over wireless networks with network coding capabilities. It has been demonstrated that network coding can...
Provided by University of California
-
White Papers
Cooperative Video Streaming on Smartphones
September 30, 2011, 12:00am PDT
Video applications are increasingly popular over smartphones. However, in current cellular systems, the downlink data rate fluctuates and the loss rate can be quite high. The authors are...
Provided by University of California
-
White Papers
On Detecting Pollution Attacks in Inter-Session Network Coding
January 12, 2012, 12:00am PST
Network coding involves packets being combined at intermediate nodes inside the network. Depending on whether packets from the same or different sessions are combined, network coding is classified...
Provided by University of California
-
White Papers
Network Coding-Aware Rate Control and Scheduling in Wireless Networks
March 2, 2009, 12:00am PST
Network coding has been recently applied to wireless networks to increase throughput. It is typically implemented as a thin layer between MAC and IP, transparently to higher layers. In this paper,...
Provided by University of California
-
White Papers
Network Coding-Aware Queue Management for Unicast Flows Over Coded Wireless Networks
April 9, 2010, 12:00am PDT
The authors are interested in unicast flows over wireless networks with intersession network coding (such as COPE). TCP flows over coded wireless networks do not fully exploit network coding...
Provided by University of California
-
White Papers
PACE Yourself: Power Aware Collaborative Execution on Mobile Phones
December 11, 2009, 12:00am PST
In this paper, the authors propose a framework for Power Aware Collaborative Execution (PACE) for mobile phones. Mobile phones have scarce resources, such as battery power and bandwidth. In the...
Provided by University of California
-
White Papers
Alleviate Cellular Congestion Through Opportunistic Through Filling
December 19, 2011, 12:00am PST
The demand for cellular data service has been skyrocketing since the debut of data-intensive smart phones and touch-pads. However, not all data are created equal. Many popular applications on...
Provided by University of California
-
White Papers
Optimization of Transmission Strategies for Opportunistic Access in Cognitive Radio Networks
March 14, 2008, 12:00am PDT
Cognitive radio is a promising technology to mitigate spectrum shortage in wireless communications. It enables Secondary Users (SUs) to opportunistically access low-occupancy primary spectral...
Provided by University of California
-
White Papers
Wireless Network Utility Maximization
October 8, 2008, 12:00am PDT
The authors describe Wireless Network Utility Maximization, WNUM, and compare its performance to traditional NUM along the dimensions of rate, delay and reliability under flat fading. Both coded...
Provided by University of California
-
White Papers
Primary User Traffic Estimation for Dynamic Spectrum Access
March 12, 2012, 12:00am PDT
Accurate estimation of licensed channel Primary User's (PU) temporal statistics is important for Dynamic Spectrum Access (DSA) systems. With accurate estimation of the mean duty cycle, u, and the...
Provided by University of California
-
White Papers
MPR-Aware Performance Improvement for Inter-Domain Routing in MANETs
August 13, 2011, 12:00am PDT
Inter-domain routing for MANETs (Mobile Ad Hoc NETworks) draws increasing attention in military and civil application. It works on heterogeneous networking protocols, including different MAC layer...
Provided by University of California
-
White Papers
Timely and Robust Key Establishment Under Jamming Attack in Critical Wireless Networks
August 14, 2011, 12:00am PDT
Jamming attacks are security threats disrupting RF communications in wireless networks. Traditionally, spread spectrum has been proposed as a countermeasure. However, spread spectrum requires...
Provided by University of California
-
White Papers
Mitigate Funnel Effect in Sensor Networks With Multi-Interface Relay Nodes
February 1, 2012, 12:00am PST
Overlay network architectures that use orthogonal channels have been known to provide effective additional resources to underlying networks in high demand. Overlays are composed of relay nodes...
Provided by University of California
-
White Papers
Future Directions in Cognitive Radio Network Research
June 1, 2009, 12:00am PDT
Wireless technology is proliferating rapidly, and the vision of pervasive wireless computing and communications offers the promise of many societal and individual benefits. While consumer devices...
Provided by University of California
-
White Papers
Mobile Ad Hoc Networks (MANET) Protocols Evaluation Framework
June 29, 2008, 12:00am PDT
The authors propose a novel, robust MANET protocols evaluation framework which enables researchers to track performance metrics and evaluate theoretical predictions. This framework speeds up the...
Provided by University of California
-
White Papers
A Constrained Resource Allocation Study for LOS MIMO Fading Ad-Hoc Networks
January 1, 2012, 12:00am PST
The authors study constrained resource allocation problems for MIMO wireless ad-hoc networks under LOS fading. By considering the tradeoff between the aggregate consumed power and throughput of...
Provided by University of California
-
White Papers
The Impacts of Physical Layer Parameters on the Connectivity of Ad-Hoc Networks
January 1, 2012, 12:00am PST
The authors study the effects of physical layer parameters on the connectivity of fading wireless ad-hoc networks. Relying on a symbol error rate connectivity metric for wireless ad-hoc networks,...
Provided by University of California
-
White Papers
An Implementation and Experimental Study of the Variable-Structure Congestion Control Protocol (VCP)
August 23, 2007, 12:00am PDT
The Variable-structure Congestion control Protocol (VCP) has been proposed as an alternative approach to the eXplicit Control Protocol (XCP). In the authors' earlier work, they reported the NS2...
Provided by University of California
-
White Papers
Emulation of Fading Wireless Link Effects in NEWS Wired Testbed
August 23, 2007, 12:00am PDT
Currently, under development by the Boeing Company, Network Emulator Wireless Simulator (NEWS) is a wired testbed for evaluating the performance of MANET protocols. In part, NEWS extends the...
Provided by University of California
-
White Papers
An Exact Solution to an Approximated Model of RED
July 23, 2007, 12:00am PDT
In this paper, the authors propose an analytical model to capture the dynamics of the RED algorithm. They first develop a system of recursive equations that describes the packet dropping behavior...
Provided by University of California
-
White Papers
Optimal Audio Transmission Over Wireless Tandem Channels
November 19, 2007, 12:00am PST
In this paper, the authors propose a statistical optimization framework for transmitting audio sequences over wireless links. Their proposed framework protects audio frames against both temporally...
Provided by University of California
-
White Papers
A Case Study of a MIMO SDR Implementation
January 13, 2009, 12:00am PST
Funded by a research contract from the Boeing Company, the authors report on the implementation of a Multiple-Input Multiple-Output (MIMO) Software Defined Radio (SDR) platform forming an...
Provided by University of California
-
White Papers
CLA-MAC: A Cooperative Extension of Load Adaptive MAC Protocol
October 28, 2011, 12:00am PDT
The use of cooperative communications techniques has proven to significantly improve network performance via cooperation among network nodes. In this paper, the authors propose a cooperative...
Provided by University of California
-
White Papers
How to Lower Congestion With Cross-Layer MPR-PHY/MAC Design?
November 6, 2011, 12:00am PDT
In this paper, the authors introduce a cross-layer design between PHY and MAC for Multiple Packet Reception (MPR). Based on the simulation results, three phases of operation has been identified...
Provided by University of California
-
White Papers
Robust MANET Routing Using Adaptive Path Redundancy and Coding
December 10, 2008, 12:00am PST
Providing efficient networking services in MANETs is very challenging in presence of mobility, unpredictable radio channel and interference: a significant number of packets can be corrupted and/or...
Provided by University of California
Keep Up with TechRepublic
Submit a Paper
Get your content listed in our directory!
Our directory is the largest library of vendor-supplied technical content on the Web. It’s also the first place IT decision makers turn to when researching technology solutions. Our members are already finding your competitors’ papers here - shouldn’t they find yours, too? It's FREE so click here and submit your white paper, case study, data sheet, research report, or other document today!
