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University of California
(1083 results)-
White Papers
ITS Data Center Access Policies and Procedures
March 27, 2007, 12:00am PDT
The ITS Data Center provides specific environmental, enhanced security access, fire alarms/suppression, Uninterrupted Power Supplies (UPS), Campus Backbone connectivity, and a number of other...
Provided by University of California
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White Papers
Putting it All Together: Using Socio-Technical Networks to Predict Failures
November 30, 2009, 12:00am PST
Studies have shown that social factors in development organizations have a dramatic effect on software quality. Separately, program dependency information has also been used successfully to...
Provided by University of California
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White Papers
OFDM Receiver Design
December 12, 2000, 12:00am PST
Othogonal Frequency Division Multiplex (OFDM) has gained considerable attention in recent years. It has been adopted for various standards include the 802.11a wireless LAN standard. In this...
Provided by Regents of the University of California
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White Papers
Is It Too Late for PAKE?
May 2, 2009, 12:00am PDT
The most common web authentication technique in use today is password authentication via an HTML form, where a user types her password directly into a web page from the site to which she wishes to...
Provided by University of California
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White Papers
Using Visual Features for Anti-Spam Filtering
January 1, 2009, 12:00am PST
Unsolicited Commercial Email (UCE), also known as spam, has been a major problem on the Internet. In the past, researchers have addressed this problem as a text classification or categorization...
Provided by University of California
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White Papers
Spam Filtering Using a Markov Random Field Model With Variable Weighting Schemas
January 1, 2009, 12:00am PST
This paper presents a Markov Random Field model based approach to filter spam. Their approach examines the importance of the neighborhood relationship (MRF cliques) among words in an email message...
Provided by University of California
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White Papers
Spamcraft: An Inside Look at Spam Campaign Orchestration
April 24, 2009, 12:00am PDT
This paper has presented a detailed study of spam campaign orchestration as observed in the wild. Their investigation was enabled by a long-term infiltration of the Storm botnet, comprising both...
Provided by University of California
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White Papers
Social Networks and Contract Enforcement in IT Outsourcing
February 17, 2009, 12:00am PST
Most prior research on Information Technology Outsourcing has characterized the dominant governance modes as either 'Formal' or 'Relational,' which rely on stringent assumptions of perfect...
Provided by University of California
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White Papers
Using the Triangle Inequality to Accelerate k-Means
January 1, 2009, 12:00am PST
The k-means algorithm is by far the most widely used method for discovering clusters in data. The paper shows how to accelerate it dramatically, while still always computing exactly the same...
Provided by University of California
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White Papers
Principled Methods for Advising Reinforcement Learning Agents
January 1, 2009, 12:00am PST
An important issue in reinforcement learning is how to incorporate expert knowledge in a principled manner, especially as one scales up to real-world tasks. This paper presents a method for...
Provided by University of California
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White Papers
SWAP: Mitigating XSS Attacks Using a Reverse Proxy
May 13, 2009, 12:00am PDT
Due to the increasing amount of Web sites offering features to contribute rich content, and the frequent failure of Web developers to properly sanitize user input, cross-site scripting prevails as...
Provided by University of California
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White Papers
Blue Versus Red: Towards a Model of Distributed Security Attacks
June 16, 2009, 12:00am PDT
This paper develops a two-sided multiplayer model of security in which attackers aim to deny service and defenders strategize to secure their assets. Attackers benefit from the successful...
Provided by University of California
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White Papers
Toward a Uni?ed 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
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White Papers
The Eucalyptus Open-Source Cloud-Computing System
August 16, 2008, 12:00am PDT
Cloud computing systems fundamentally provide access to large amounts of data and computational resources through a variety of interfaces. Many extant systems have in common the notion that...
Provided by University of California
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White Papers
MapScale: A Cloud Environment for Scientific Computing
June 12, 2009, 12:00am PDT
Parallel programming languages have sought out many different means by which many numbers of cores can be utilized for a common goal. Programming languages such as MPI provide a low-level, message...
Provided by University of California
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White Papers
Energy Maps for Mobile Wireless Networks: Coherence Time Versus Spreading Period
January 20, 2009, 12:00am PST
This paper shows that even though mobile networks are highly unpredictable when viewed at the individual node scale, the end-to-end Quality-of-Service (QoS) metrics can be stationary when the...
Provided by University of California
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White Papers
Implementation and Evaluation of a Mobile Wireless PlanetLab Node
August 18, 2009, 12:00am PDT
With the introduction of cellular phones, mobile wireless communication has become an integral part of day-to-day life in this century. A testbed is crucial in continuing cutting-edge wireless...
Provided by University of California
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White Papers
A Mobile-Agent Based Wireless Sensing Network for Structural Monitoring Applications
December 19, 2008, 12:00am PST
A new wireless sensing network paradigm is presented for structural monitoring applications. In this approach, both power and data interrogation commands are conveyed via a mobile-agent that is...
Provided by University of California
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White Papers
Above the Clouds: A Berkeley View of Cloud Computing
February 10, 2009, 12:00am PST
Cloud Computing, the long-held dream of computing as a utility, has the potential to transform a large part of the IT industry, making software even more attractive as a service and shaping the...
Provided by University of California
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White Papers
ElasTraS: An Elastic Transactional Data Store in the Cloud
May 25, 2009, 12:00am PDT
Over the last couple of years, "Cloud Computing" or "Elastic Computing" has emerged as a compelling and successful paradigm for internet scale computing. One of the major contributing factors to...
Provided by University of California
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White Papers
Scheduling Heterogeneous Wireless Systems for Efficient Spectrum Access
September 30, 2009, 12:00am PDT
The spectrum scarcity problem emerged in recent years, due to unbalanced utilization of RF (Radio Frequency) bands in the current state of wireless spectrum allocations. Different from cognitive...
Provided by University of California
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White Papers
Re-Assessing Long Distance Wireless for West Africa
January 25, 2009, 12:00am PST
This paper describes the experiences deploying long distance, point-to-point WiFi links in Ghana and Guinea Bissau, focusing on several challenges that are somewhat unique to these countries and...
Provided by University of California
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White Papers
Near-Optimal Radio Use for Wireless Network Synchronization
June 30, 2009, 12:00am PDT
This paper considers the model of communication where wireless devices can either switch their radios o to save energy (and hence, can neither send nor receive messages), or switch their radios on...
Provided by University of California
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White Papers
A Real-Time Traffic Packet Scheduler for a Novel TDMA MAC Protocol
June 12, 2008, 12:00am PDT
Wireless mesh networks are being rapidly deployed in both urban and rural areas impacting a large fraction of the world's population. As the profile of the average user changes so does the...
Provided by University of California
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White Papers
Soft-TDMAC: A Software TDMA-Based MAC Over Commodity 802.11 Hardware
January 15, 2009, 12:00am PST
This paper designs and implements Soft-TDMAC, a software Time Division Multiple Access (TDMA) based MAC protocol, running over commodity 802.11 hardware. Soft-TDMAC has a synchronization...
Provided by University of California
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White Papers
Low-Complexity, High-Throughput Multiple-Access Wireless Protocol for Body Sensor Networks
March 14, 2009, 12:00am PDT
Wireless systems that form a body-area network must be made small and low power without sacrificing performance. To achieve high-throughput communication in low-cost wireless body area networks,...
Provided by University of California
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White Papers
Softspeak: Making VoIP Play Well in Existing 802.11 Deployments
February 27, 2009, 12:00am PST
Voice over IP (VoIP) in 802.11 Wireless Networks (WiFi) is an attractive alternative to cellular wireless telephony. Unfortunately, VoIP traffic is well known to make inefficient use of such...
Provided by University of California
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White Papers
Optimal MAC Protocol Formulation for Wireless Sensor Networks
September 28, 2007, 12:00am PDT
With the research interest in Wireless Sensor Networks (WSN) increasing, many Medium Access Control (MAC) protocols have been developed as a means to maximize the performance of WSN's. However,...
Provided by University of California
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White Papers
Optimizing Interval Training Protocols Using Data Mining Decision Trees
May 8, 2009, 12:00am PDT
Interval training consists of interleaving high intensity exercises with rest periods. This training method is a well known exercise protocol which helps strengthen and improve one's...
Provided by University of California
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White Papers
Defending Mobile Phones From Proximity Malware
January 21, 2009, 12:00am PST
As mobile phones increasingly become the target of propagating malware, their use of direct pair-wise communication mechanisms, such as Bluetooth and WiFi, pose considerable challenges to malware...
Provided by University of California
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White Papers
Automated Worm Fingerprinting
January 1, 2009, 12:00am PST
This paper proposes an automated approach for quickly detecting previously unknown worms and viruses based on two key behavioral characteristics a common exploit sequence together with a range of...
Provided by University of California
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White Papers
Password Based Login
January 1, 2009, 12:00am PST
As an introduction to security and cryptography, lets look at something it does extensively, namely to authenticate ourselves using passwords. It considers a computer on which many different...
Provided by Regents of the University of California
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White Papers
Protecting Browsers From Extension Vulnerabilities
December 8, 2009, 12:00am PST
Browser extensions are remarkably popular, with one in three Firefox users running at least one extension. Although well-intentioned, extension developers are often not security experts and write...
Provided by University of California
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White Papers
Cross-Origin JavaScript Capability Leaks: Detection, Exploitation, and Defense
May 18, 2009, 12:00am PDT
This paper identifies a class of Web browser implementation vulnerabilities, cross-origin JavaScript capability leaks, which occur when the browser leaks a JavaScript pointer from one security...
Provided by University of California
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White Papers
Secure Content Sniffing for Web Browsers, or How to Stop Papers From Reviewing Themselves
March 7, 2009, 12:00am PST
Cross-site scripting defenses often focus on HTML documents, neglecting attacks involving the browser's content-sniffing algorithm, which can treat non-HTML content as HTML. Web applications, such...
Provided by University of California
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White Papers
Extending Networking Into the Virtualization Layer
October 1, 2009, 12:00am PDT
The move to virtualization has created a new network access layer residing on hosts that connects the various VMs. Virtualized deployment environments impose requirements on networking for which...
Provided by University of California
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White Papers
VrtProf: Vertical Profiling for System Virtualization
September 14, 2009, 12:00am PDT
As data centers and end users become increasingly reliant on virtualization technology, more efficient and accurate methods of profiling such systems are needed. However, under virtualization the...
Provided by University of California
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White Papers
Integration of RFID and Cellular Technologies
September 1, 2004, 12:00am PDT
Radio Frequency Identification or RFID, is a method of identifying unique items using radio waves. RFID is a promising technology for many corporations that seek to improve their processes,...
Provided by University of California
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White Papers
The Turnip: Visualizing Statistical Data Cleaning
December 18, 2008, 12:00am PST
Databases with measured or humanly entered data can be full of erroneous data that regular statistical methods are created around, but solutions can be time consuming and the data can be difficult...
Provided by University of California
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White Papers
Frequency Enhancements for Visualizing 3D Seismic Data
March 30, 2009, 12:00am PDT
This application paper introduces a suite of enhancement techniques for visualizing seismic data. These techniques provide a better understanding of the underlying propagation process in the...
Provided by University of California
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White Papers
Organizing Large Scale Hacking Competitions
June 23, 2010, 12:00am PDT
Computer security competitions and challenges are a way to foster innovation and educate students in a highly-motivating setting. In recent years, a number of different security competitions and...
Provided by University of California
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White Papers
Optimal Allocation of Filters Against DDoS Attacks
February 5, 2007, 12:00am PST
Distributed Denial-of-Service (DDoS) attacks are a major problem in the Internet today. During a DDoS attack, a large number of compromised hosts send unwanted traffic to the victim, thus...
Provided by University of California
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White Papers
Leveraging Social Contacts for Message Confidentiality in Delay Tolerant Networks
April 29, 2009, 12:00am PDT
Delay- and Disruption-Tolerant Networks (DTNs) can bring much-needed connectivity to rural areas and other settings with limited or non-existing infrastructures. High node mobility and infrequent...
Provided by University of California
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White Papers
Line and Lattice Networks Under Deterministic Interference Models
September 30, 2010, 12:00am PDT
Capacity bounds are compared for four different deterministic models of wireless networks, representing four different ways of handling broadcast and superposition in the physical layer. In...
Provided by University of California
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White Papers
A Smart Sensor Web for Ocean Observation: System Design, Architecture, and Performance
May 18, 2007, 12:00am PDT
Much of the cost and effort of new ocean observatories will be in the infrastructure that directly supports sensors, such as moorings and mobile platforms, which in turn connect to a "Backbone"...
Provided by University of California
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White Papers
Reducing Errors in the Anomaly-Based Detection of Web-Based Attacks Through the Combined Analysis of Web Requests and SQL Queries
February 20, 2008, 12:00am PST
Web-based applications have become a popular means of exposing functionality to large numbers of users by leveraging the services provided by web servers and databases. The wide proliferation of...
Provided by University of California
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White Papers
Static Enforcement of Web Application Integrity Through Strong Typing
June 2, 2009, 12:00am PDT
Security vulnerabilities continue to plague web applications, allowing attackers to access sensitive data and co-opt legitimate web sites as a hosting ground for malware. Accordingly, researchers...
Provided by University of California
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White Papers
MIMO and TCP: A Case for Cross Layer Design
August 24, 2007, 12:00am PDT
TCP has not fared well in wireless ad hoc networks. Even in a perfectly static network, there is the problem of throughput degradation due to the interference between flows, which becomes more...
Provided by University of California
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Software
UCLA Library 1.1 (iOS)
September 16, 2011, 12:00am PDT
The UCLA Library app provides a convenient way to search UCLA library from iPhone or iPod Touch. Also find library hours, contacts, and laptop availability at campus locations.Features:* Search...
Provided by UCLA Library 2011 Regents of the University of California
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White Papers
SOS: Secure Overlay Sensornets
January 12, 2007, 12:00am PST
Overlay Networks (ONs) are logical networks built on top of a physical network with the aim of moving part of the routing complexity to the application layer. At the same time, sensornets are ad...
Provided by University of California
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White Papers
Performance of Transmit Precoding in Time-Varying Point-to-Point and Multi-User MIMO Channels
January 22, 2008, 12:00am PST
Transmit precoding strategies in Multiple-Input Multiple-Output (MIMO) systems provide a mechanism for increasing the performance of point-to-point links and enable spatial division multiple...
Provided by University of California
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White Papers
Covariance Based Signaling and Feedback Data Parameterization for the TimeVarying MIMO Broadcast Channel
April 13, 2010, 12:00am PDT
Linear precoding (beamforming) techniques that maximize the sum rate in the multi-antenna broadcast channel often suffer severe performance degradation when the channel state information at the...
Provided by University of California
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White Papers
Outage-Optimal Transmission in Multiuser-MIMO Kronecker Channels
January 11, 2010, 12:00am PST
In this paper, the authors look at single user and multiuser Multiple-Input Multiple-Output (MIMO) beamforming networks with Channel Distribution Information (CDI). CDI does not need to be updated...
Provided by University of California
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White Papers
Spatial Multiplexing in Random Wireless Networks
April 1, 2010, 12:00am PDT
The authors consider a network of transmitters, each with a receiver at a fixed distance, and locations drawn independently according to a homogeneous Poisson Point Process (PPP). The transmitters...
Provided by University of California
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White Papers
A Delay-Minimizing Routing Strategy for Wireless Multi-Hop Networks
May 13, 2009, 12:00am PDT
The authors consider a network where each route comprises a backlogged source, a number of relays and a destination at a finite distance. The locations of the sources and the relays are...
Provided by University of California
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White Papers
Finding Self-Similarities in Opportunistic People Networks
January 17, 2007, 12:00am PST
Opportunistic network is a type of challenged networks, where network contacts are intermittent, an end-to-end path between the source and the destination may have never existed,...
Provided by University of California
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White Papers
Evaluating Mobility Support in ZigBee Networks
August 27, 2007, 12:00am PDT
The deployment of ZigBee networks is expected to facilitate numerous applications, such as home healthcare, medical monitoring, consumer electronics, and environmental sensors. For many envisioned...
Provided by University of California
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White Papers
PBProbe: A Capacity Estimation Tool for High Speed Networks
May 19, 2008, 12:00am PDT
Knowledge about the bottleneck capacity of an Internet path is critical for efficient network design, management, and usage. In this paper, the authors propose a new technique, called PBProbe, for...
Provided by University of California
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White Papers
Mobile-C: A Mobile Agent Platform for Mobile C/C++ Agents
July 13, 2006, 12:00am PDT
This paper presents the design, implementation and application of Mobile-C, an IEEE Foundation for Intelligent Physical Agents (FIPA) compliant agent platform for mobile C/C++ agents. IEEE FIPA...
Provided by University of California
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White Papers
Interactive Visual Analysis of Hierarchical Enterprise Data
August 14, 2010, 12:00am PDT
In this paper, the authors present an interactive visual technique for analyzing and understanding hierarchical data, which they have applied to analyzing a corpus of technical reports produced by...
Provided by University of California
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White Papers
SUDOKU: Secure and Usable Deployment of Keys on Wireless Sensors
December 13, 2010, 12:00am PST
Initial deployment of secrets plays a crucial role in any security design, but especially in hardware constrained wireless sensor networks. Many key management schemes assume either manually...
Provided by University of California
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White Papers
Mining Ventilation Automation: Wireless Sensing, Communication Architecture and Advanced Services
July 15, 2008, 12:00am PDT
This paper reports on the definition of technical challenges for the sensing and communication networks of a mining ventilation automation project. Specifically, complex network architectures...
Provided by University of California
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White Papers
Reducing Seek Overhead With Application-Directed Prefetching
December 17, 2009, 12:00am PST
An analysis of performance characteristics of modern disks finds that prefetching can improve the performance of non-sequential read access patterns by an order of magnitude or more, far more than...
Provided by University of California
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White Papers
Heuristic Evaluation of Programming Language Features
February 11, 2011, 12:00am PST
Usability is an important feature for programming languages. However, user studies which compare programming languages or systems are both very expensive and typically inconclusive. In this paper,...
Provided by University of California
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White Papers
A Tool-Based Approach to Teaching Parallel and Concurrent Programming
October 21, 2010, 12:00am PDT
Today, multicore computers are commonplace and university curricula are lagging behind. The authors need to work concurrency and parallelism into introductory courses, while also maintaining...
Provided by University of California
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White Papers
User Evaluation of Correctness Conditions: A Case Study of Cooperability
October 21, 2010, 12:00am PDT
In order to find and fix concurrency bugs, programmers must reason about different possible thread inter-leavings - context switches may occur at any program point, all with the potential for...
Provided by University of California
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White Papers
DP-FAIR: A Simple Model for Understanding Optimal Multiprocessor Scheduling
April 23, 2010, 12:00am PDT
The authors consider the problem of optimal real-time scheduling of periodic and sporadic tasks for identical multiprocessors. A number of recent papers have used the notions of fluid scheduling...
Provided by University of California
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White Papers
Power Adaptive Broadcasting With Local Information in Ad Hoc Networks
January 1, 2012, 12:00am PST
Network wide broadcasting is an energy intensive function. In this paper, the authors propose a new method that performs transmission power adaptations based on information available locally, to...
Provided by University of California
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White Papers
Enhancing LRU Replacement Via Phantom Associativity
January 24, 2012, 12:00am PST
In this paper, the authors propose a novel cache design, Phantom Associative Cache (PAC), that alleviates cache thrashing in L2 caches by keeping the in-cache data blocks for a longer time period....
Provided by University of California
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White Papers
Identifying the Root Causes of Memory Bugs Using Corrupted Memory Location Suppression
January 1, 2012, 12:00am PST
The authors present a general approach for automatically isolating the root causes of memory-related bugs in software. Their approach is based on the observation that most memory bugs involve uses...
Provided by University of California
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White Papers
BugFix: A Learning-Based Tool to Assist Developers in Fixing Bugs
January 1, 2012, 12:00am PST
The authors present a tool called BugFix that can assist developers in fixing program bugs. Their tool automatically analyzes the debugging situation at a statement and reports a prioritized list...
Provided by University of California
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White Papers
Effective and Efficient Localization of Multiple Faults Using Value Replacement
January 1, 2012, 12:00am PST
The authors previously presented a fault localization technique called Value Replacement that repeatedly alters the state of an executing program to locate a faulty statement. The technique...
Provided by University of California
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White Papers
Photonic Many-Core Architecture Study
May 29, 2008, 12:00am PDT
Several recent device technology developments have been fundamentally changing the microprocessor architecture design space. These developments include photonic interconnects, feature size...
Provided by University of California
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White Papers
Efficient Synthesis of Networks on Chip
January 1, 2012, 12:00am PST
The authors propose an efficient heuristic for the Constraint-Driven Communication Synthesis (CDCS) of on-chip communication networks. The complexity of the synthesis problems comes from the...
Provided by University of California
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White Papers
Architecture, Control, and Management of Optical Switching Networks
August 22, 2007, 12:00am PDT
The authors present Dynamic Circuit Switching (DCS) as a new paradigm for telecom backbone networks. DCS is well suited for optical networks and can support emerging services such as...
Provided by University of California
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White Papers
Optical Networks: The Road Ahead
September 21, 2007, 12:00am PDT
Progress on research and development in optical networks will be discussed in this talk. Some emerging important topics include hybrid optical-wireless access, long-reach broadband access, dynamic...
Provided by University of California
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White Papers
Reliable Architectures for Next-Generation Broadband Access Networks (RANGBAN)
October 26, 2008, 12:00am PDT
Future access network architectures should exhibit reliability while providing broadband Internet services. Progress on research and development of reliable wired and wireless access networks is...
Provided by University of California
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White Papers
Achieving Atomicity for Web Services Using Commutativity of Actions
August 28, 2007, 12:00am PDT
Web Services enable the creation of complex business activities through the cooperation of independently developed software programs. However, Web Services incur the risk of long delays and locked...
Provided by University of California
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White Papers
Client-Side Cross-Site Scripting Protection
June 16, 2009, 12:00am PDT
Web applications are becoming the dominant way to provide access to online services. At the same time, web application vulnerabilities are being discovered and disclosed at an alarming rate. Web...
Provided by University of California
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White Papers
Cross-Site Scripting Prevention With Dynamic Data Tainting and Static Analysis
January 24, 2007, 12:00am PST
Cross-Site Scripting (XSS) is an attack against web applications in which scripting code is injected into the output of an application that is then sent to a user's web browser. In the browser,...
Provided by University of California
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