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University of California
(1026 results)-
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Free Cash Flow And Takeover Threats: An Experimental Study
June 22, 2007, 12:00am PDT
A classic theory of corporate governance holds that, when cash flow is high and investment opportunities scarce, takeover threats reduce managerial self dealing and encourage dividend payment to...
Provided by Regents of the University of California
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White Papers
A New Network Architecture for Future Optical Networks: Coarse Optical Circuit Switching by Default, Rerouting Over Circuits for Adaptation
January 1, 2009, 12:00am PST
As Internet traffic continues to grow unabated at an exponential rate, it is unclear whether or not the existing packet routing network architecture based on electronic routers will continue to...
Provided by University of California
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White Papers
Comparison of the Three CPU Schedulers in Xen
November 8, 2007, 12:00am PST
The primary motivation for enterprises to adopt virtualization technologies is to create a more agile and dynamic IT infrastructure - with server consolidation, high resource utilization, the...
Provided by University of California
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White Papers
Hiding Communication Latency With Non-SPMD, Graph-Based Execution
February 19, 2009, 12:00am PST
Reformulating an algorithm to mask communication delays is crucial in maintaining scalability, but traditional solutions embed the overlap strategy into the application. The authors present an...
Provided by University of California
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White Papers
A Loop Correlation Technique to Improve Performance Auditing
August 17, 2007, 12:00am PDT
Performance auditing is an online optimization strategy that empirically measures the effectiveness of an optimization on a particular code region. It has the potential to greatly improve...
Provided by University of California
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White Papers
Implementation and Evaluation of a Mobile 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
Inter-Socket Victim Cacheing for Platform Power Reduction
August 31, 2010, 12:00am PDT
On a multi-socket architecture with load below peak, as is often the case in a server installation, it is common to consolidate load onto fewer sockets to save processor power. However, this can...
Provided by University of California
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White Papers
Toward Petascale Simulation of Cellular Microphysiology
August 1, 2007, 12:00am PDT
MCell is a Monte Carlo simulator of cell microphysiology, and the scalable variant can be used to study challenging problems of interest to the biological community. MCell can currently model a...
Provided by University of California
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White Papers
Chameleon: A Framework for Observing, Understanding, and Imitating the Memory Behavior of Applications
May 2, 2008, 12:00am PDT
In this work, the authors present an integrated solution to three classic problems in the field of performance analysis: memory modeling, synthetic address trace generation, and the creation of...
Provided by University of California
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White Papers
Accelerating Viola-Jones Face Detection to FPGA-Level Using GPUs
June 7, 2010, 12:00am PDT
Face detection is an important aspect for biometrics, video surveillance and human computer interaction. The authors present a multi-GPU implementation of the Viola-Jones face detection algorithm...
Provided by University of California
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White Papers
A Bayesian Network Framework for Reject Inference
January 1, 2011, 12:00am PST
Most learning methods assume that the training set is drawn randomly from the population to which the learned model is to be applied. However in many applications this assumption is invalid. For...
Provided by University of California
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White Papers
Learning Classifiers From Only Positive and Unlabeled Data
August 27, 2008, 12:00am PDT
The input to an algorithm that learns a binary classifier normally consists of two sets of examples, where one set consists of positive examples of the concept to be learned, and the other set...
Provided by University of California
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White Papers
Generating Tests From Counterexamples
January 1, 2011, 12:00am PST
The authors have extended the software model checker BLAST to automatically generate test suites that guarantee full coverage with respect to a given predicate. More precisely, given a C program...
Provided by University of California
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White Papers
Optimal Communication Complexity of Generic Multicast Key Distribution
January 1, 2011, 12:00am PST
The authors prove a tight lower bound for generic protocols for secure multicast key distribution where the messages sent by the group manager are obtained by arbitrarily nested application of a...
Provided by University of California
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White Papers
Soundness of Formal Encryption in the Presence of Active Adversaries
January 1, 2011, 12:00am PST
Cryptographic protocols are a fundamental tool in the design of secure distributed computing systems, but they are also extremely hard to design and validate. The difficulty of designing valid...
Provided by University of California
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White Papers
NERSC Cyber Security Challenges That Require DOE Development and Support
May 16, 2008, 12:00am PDT
Traditional security approaches do not adequately address all the requirements of open, scientific computing facilities. Many of the methods used for more restricted environments, including almost...
Provided by University of California
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White Papers
Information-Acquisition-as-a-Service for Cyber-Physical Cloud Computing
May 15, 2010, 12:00am PDT
Data center cloud computing distinguishes computational services such as database transactions and data storage from computational resources such as server farms and disk arrays. Cloud computing...
Provided by University of California
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White Papers
A Common Substrate for Cluster Computing
May 25, 2009, 12:00am PDT
The success of MapReduce has sparked many e orts to design cluster computing frameworks. The authors argue that no single framework will be optimal for all applications, and that they should...
Provided by University of California
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White Papers
Usher: An Extensible Framework for Managing Clusters of Virtual Machines
September 13, 2007, 12:00am PDT
Usher is a virtual machine management system designed to impose few constraints upon the computing environment under its management. Usher enables administrators to choose how their virtual...
Provided by University of California
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White Papers
The Y-Architecture for On-Chip Interconnect: Analysis and Methodology
January 1, 2011, 12:00am PST
The Y-architecture for on-chip interconnect is based on pervasive use of 0-, 120-, and 240-degree oriented semi-global and global wiring. Its use of three uniform directions exploits on-chip...
Provided by University of California
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White Papers
Leadership: Current Theories, Research, And Future Directions
April 28, 2009, 12:00am PDT
This review examines recent theoretical and empirical developments in the leadership literature, beginning with topics that are currently receiving attention in terms of research, theory, and...
Provided by University of California
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White Papers
Credit Card Debt And Payment Use
May 1, 2008, 12:00am PDT
Approximately half of credit card holders in the United States regularly carry unpaid credit card debt. These so-called "Revolvers" exhibit payment behavior that differs from that of those who...
Provided by Regents of the University of California
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White Papers
Host Multicast: A Framework for Delivering Multicast to End Users
January 1, 2011, 12:00am PST
While the advantages of multicast delivery over multiple unicast deliveries is undeniable, the deployment of the IP multicast protocol has been limited to "Islands" of network domains under single...
Provided by University of California
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White Papers
Integrating Marine Observatories Into a System-of-Systems: Messaging in the US Ocean Observatories Initiative
August 29, 2009, 12:00am PDT
The Ocean Observatories Initiative (OOI) will implement ocean sensor networks covering a diversity of oceanic environments, ranging from the coastal to the deep ocean. Construction will begin in...
Provided by University of California
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White Papers
Computational Differential Privacy
June 3, 2009, 12:00am PDT
The definition of differential privacy has recently emerged as a leading standard of privacy guarantees for algorithms on statistical databases. The authors offer several relaxations of the...
Provided by University of California
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White Papers
Data Mining by Navigation - An Experience with Systems Biology
January 1, 2011, 12:00am PST
This paper proposes a navigational method for mining by collecting evidences from diverse data sources. Since the representation method and even semantics of data elements differ widely from one...
Provided by University of California
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White Papers
A Secure, Publisher-Centric Web Caching Infrastructure
January 1, 2011, 12:00am PST
The current web caching infrastructure, though it has a number of performance benefits for clients and network providers, does not meet publishers' requirements. The authors argue that to satisfy...
Provided by University of California
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White Papers
Integration Without Identification? The Determinants Of Europeanness In The EU
April 1, 2009, 12:00am PDT
European identity has moved from a possible outcome of integration to a force determining the level of future integration, because without some identification with Europe on the part of the...
Provided by University of California
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White Papers
Heterogeneity And Trade
December 1, 2007, 12:00am PST
Aggregate production functions are a standard feature of the trade theorist's toolbox. While this modeling device has generated some fundamental insights, it presents one obvious shortcoming: it...
Provided by University of California
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White Papers
Secure IP Telephony Using Multi-Layered Protection
January 1, 2011, 12:00am PST
This paper presents the design and analysis of a multilayer protection scheme against Denial-of-Service (DoS) attacks in IP telephony enabled enterprise networks. While there are many types of DoS...
Provided by University of California
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White Papers
The Quantitative Comparison of IP Networks
March 27, 2008, 12:00am PDT
The authors propose a new methodology for comparing network traces. This methodology is based on the use of multiple statistical measures on the set of network characteristics, and the...
Provided by University of California
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White Papers
URL Forwarding and Compression in Adaptive Web Caching
November 7, 2007, 12:00am PST
Web caching is generally acknowledged as an important service for alleviating focused overloads when certain web servers' contents suddenly become popular. Cooperative caching systems are more...
Provided by University of California
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White Papers
Performance Impacts of Multi-Scaling in Wide Area TCP/IP Traffic
November 8, 2007, 12:00am PST
Recent measurement and simulation studies have revealed that wide area network traffic has complex statistical - possibly multifractal - characteristics on short timescales, and is self-similar on...
Provided by University of California
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White Papers
Object Identification in a Bayesian Context
November 7, 2007, 12:00am PST
Object identification - the task of deciding that two observed objects are in fact one and the same object - is a fundamental requirement for any situated agent that reasons about individuals....
Provided by University of California
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White Papers
A Meta-Notation for Data Visualization
December 15, 2010, 12:00am PST
The authors describe a meta-notation devised to express the major structural characteristics in widely-used data visualizations. The meta-notation consists of unary and binary operators that can...
Provided by University of California
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White Papers
Memory Subsystem Simulation in Software TLM/T Models
February 23, 2009, 12:00am PST
Design of Multiprocessor System-on-a-Chips requires efficient and accurate simulation of every component. Since the memory subsystem accounts for up to 50%of the performance and energy...
Provided by University of California
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White Papers
Understanding Handoffs in Large IEEE 802.11 Wireless Networks
August 27, 2007, 12:00am PDT
As the utility of wireless technology grows, wireless networks are being deployed in more widely varying conditions. The monitoring of these networks continues to reveal key implementation...
Provided by University of California
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White Papers
The Rise And Fall Of The Nonconventional Mortgage Industry
April 2, 2010, 12:00am PDT
The 2007-2009 financial crises were centered on the nonconventional mortgage industry. Scholars have just begun to carefully consider what really caused the crisis. This paper pushes the debate...
Provided by University of California
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White Papers
Earnings Determination And Taxes: Evidence From A Cohort-Based Payroll Tax Reform In Greece
February 2, 2010, 12:00am PST
This paper analyzes the response of earnings to payroll tax rates using a cohort-based reform in Greece. All individuals who started working on or after 1993 face permanently a much higher...
Provided by University of California
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White Papers
Embedded RFID and Everyday Things: A Case Study of the Security and Privacy Risks of the U.S. e-Passport
October 9, 2007, 12:00am PDT
New applications for Radio Frequency Identification (RFID) technology include embedding transponders in everyday things used by individuals, such as books, payment cards, and personal...
Provided by University of California
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White Papers
Distributed Authentication for Randomly Compromised Networks
August 27, 2009, 12:00am PDT
The authors introduce a simple, practical approach with probabilistic information-theoretic security to solve one of quantum key distribution's major security weaknesses: the requirement of an...
Provided by University of California
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White Papers
Broadcast-Efficient Secure Multiparty Computation
March 11, 2012, 12:00am PST
Secure MultiParty Computation (MPC) is perhaps the most popular paradigm in the area of cryptographic protocols. It allows several mutually untrustworthy parties to jointly compute a function of...
Provided by University of California
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White Papers
A Cryptographic Treatment of the Wiretap Channel
April 1, 2010, 12:00am PDT
The wiretap channel is a setting where one aims to provide information-theoretic privacy of communicated data based solely on the assumption that the channel from sender to adversary is "Noisier"...
Provided by University of California
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White Papers
Polynomial-Time, Semantically-Secure Encryption Achieving the Secrecy Capacity
September 1, 2011, 12:00am PDT
In the wiretap channel setting, one aims to get information-theoretic privacy of communicated data based only on the assumption that the channel from sender to adversary is noisier than the one...
Provided by University of California
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White Papers
On the Performance of Certain Private Set Intersection Protocols
April 7, 2012, 12:00am PDT
Private Set Intersection (PSI) is a useful cryptographic primitive that allows two parties (client and server) to interact based on their respective (private) input sets, in such a way that client...
Provided by University of California
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White Papers
Efficient and Optimally Secure Key-Length Extension for Block Ciphers Via Randomized Cascading
March 23, 2012, 12:00am PDT
The authors consider the question of efficiently extending the key length of block ciphers. To date, the approach providing highest security is triple encryption (used e.g., in Triple-DES), which...
Provided by University of California
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Rubik's for Cryptographers
January 19, 2011, 12:00am PST
Hard mathematical problems are at the core of security arguments in cryptography. In this paper, the authors study mathematical generalizations of the famous Rubik's cube puzzle, namely the...
Provided by University of California
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White Papers
Design, Modeling, and Capacity Planning for Micro-Solar Power Sensor Networks
February 22, 2008, 12:00am PST
This paper describes a systematic approach to building micro-solar power subsystems for wireless sensor network nodes. The authors' approach composes models of the basic pieces - solar panels,...
Provided by University of California
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White Papers
Towards Cooperative Grids: Sensor/Actuator Networks for Renewables Integration
August 1, 2010, 12:00am PDT
Faced with an uncertain path forward to Renewables Portfolio Standard (RPS) goals and the high cost of energy storage, the authors believe that deep demand side management must be a central...
Provided by University of California
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White Papers
Defining CPS Challenges in a Sustainable Electricity Grid
March 16, 2012, 12:00am PDT
Cyber-Physical Systems (CPS) is characterized as complex distributed systems exhibiting substantial uncertainty due to interactions with the physical world. Today's electric grids are often...
Provided by University of California
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White Papers
Permission Re-Delegation: Attacks and Defenses
June 7, 2011, 12:00am PDT
Modern browsers and smartphone operating systems treat applications as mutually untrusting, potentially malicious principals. Applications are isolated except for explicit IPC or inter-application...
Provided by University of California
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White Papers
Diffusion Filters as a Flexible Architecture for Event Notification in Wireless Sensor Networks
January 1, 2012, 12:00am PST
Wireless sensor networks represent an increasingly important example of distributed event systems. Unlike Internet-based distributed event systems, sensor networks are very bandwidth constrained...
Provided by University of California
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White Papers
AODV Implementation Design and Performance Evaluation
January 1, 2012, 12:00am PST
To date, the majority of ad hoc routing protocol research has been done using simulation only. One of the most motivating reasons to use simulation is the difficulty of creating a real...
Provided by University of California
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White Papers
Transparent Influence of Path Selection in Heterogeneous Ad Hoc Networks
January 1, 2012, 12:00am PST
In wireless ad hoc networks, heterogeneity is inherent; each node has different characteristics, resources and policies. Most current ad hoc routing protocols do not consider node heterogeneity...
Provided by University of California
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White Papers
AODV Routing Protocol Implementation Design
January 1, 2012, 12:00am PST
Simulation is an important tool in the development of mobile ad hoc networks; it provides an excellent environment to experiment and verify routing protocol correctness. However, simulation does...
Provided by University of California
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White Papers
The Interaction Analyzer: A Tool for Debugging Ubiquitous Computing Applications
November 16, 2011, 12:00am PST
Ubiquitous computing applications are frequently long-running and highly distributed, leading to bugs that only become apparent far from and long after their original point of appearance. Such...
Provided by University of California
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White Papers
Controlling Applications by Managing Network Characteristics
February 10, 2012, 12:00am PST
Edge network operators have limited tools to control activities on their networks. This paper examines network dissuasion, a new approach to edge network control, based on controlling the...
Provided by University of California
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White Papers
Traffic Characterization and Internet Usage in Rural Africa
January 31, 2011, 12:00am PST
While Internet connectivity has reached a significant part of the world's population, those living in rural areas of the developing world are still largely disconnected. Recent efforts have...
Provided by University of California
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White Papers
A Context-Aware Approach to Wireless Transmission Adaptation
April 19, 2011, 12:00am PDT
Recent advancements in wireless transmission have enabled networks with a high level of physical layer flexibility. Unfortunately, these new opportunities are not harnessed by modern wireless...
Provided by University of California
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White Papers
Online Ciphers From Tweakable Blockciphers
November 22, 2010, 12:00am PST
Informally, a cryptographic transform is said to be online if it can be computed by an algorithm that reads in the (unknown number of) input bits - in order, one at a time - as it writes out the...
Provided by University of California
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Format-Preserving Encryption
December 30, 2009, 12:00am PST
Format-Preserving Encryption (FPE) encrypts a plaintext of some specified format into a cipher-text of identical format - for example, encrypting a valid credit-card number into a valid...
Provided by University of California
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Characterizing Quality of Time and Topology in a Time Synchronization Network
January 1, 2012, 12:00am PST
As Internet computing gains speed, complexity, and becomes ubiquitous, the need for precise and accurate time synchronization increases. In this paper, the authors present a characterization of a...
Provided by University of California
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Etherlay: An Overlay Enhancement for Metro Ethernet Networks
May 2, 2008, 12:00am PDT
The ubiquitous Ethernet technology has propelled itself into a wide-scale adoption for Metro Ethernet Networks (MEN). Despite recent advancements in Ethernet and commercialization of the first...
Provided by University of California
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White Papers
Soft-TDMAC: Software TDMA-Based MAC Over Commodity 802.11 Hardware
January 15, 2009, 12:00am PST
The authors design and implement Soft-TDMAC, a software Time Division Multiple Access (TDMA) based MAC protocol, running over commodity 802.11 hardware. Soft-TDMAC has a synchronization mechanism,...
Provided by University of California
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White Papers
Provenance Based Information Trustworthiness Evaluation in Multi-Hop Networks
July 7, 2010, 12:00am PDT
In this paper, the authors present a trust model to evaluate the trustworthiness of information as well as the information publishing nodes based on the information provenance. They consider two...
Provided by University of California
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White Papers
Jamming Resistant Communication: Channel Surfing Without Negotiation
February 10, 2010, 12:00am PST
Channel surfing is an effective method to prevent jamming attacks in wireless communications. In traditional channel surfing schemes, two parties have to negotiate beforehand, in order to agree on...
Provided by University of California
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White Papers
QuRiNet: A Wide-Area Wireless Mesh Testbed for Research and Experimental Evaluations
December 13, 2009, 12:00am PST
Research in wireless mesh networks have been growing in recent years. Many testbeds have been created to study networking protocols in wireless mesh networks. In this paper, the authors describe...
Provided by University of California
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White Papers
Evaluation of Network Trust Using Provenance Based on Distributed Local Intelligence
August 11, 2011, 12:00am PDT
Provenance can play a significant role in a military information system for supporting the calculation of information trust. A node's trust can change over time after its initial deployment due to...
Provided by University of California
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White Papers
Using Chaotic Maps for Encrypting Image and Video Content
September 12, 2011, 12:00am PDT
Arithmetic Coding (AC) is widely used for the entropy coding of text and multimedia data. It involves recursive partitioning of the range (0,1) in accordance with the relative probabilities of...
Provided by University of California
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White Papers
PRONET: Network Trust Assessment Based on Incomplete Provenance
August 2, 2011, 12:00am PDT
This paper presents a tool ProNet, that is used to obtain the network trust based on incomplete provenance. The authors consider a multihop scenario where a set of source nodes observe an event...
Provided by University of California
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White Papers
Exploiting Mobility for Trust Propagation in Mobile Ad Hoc Networks
May 12, 2011, 12:00am PDT
Trust plays an important role in protecting the security of mobile ad hoc networks. The node mobility brings challenge to trust propagation, where traditional graph-based propagation methods are...
Provided by University of California
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White Papers
Measurement-Based Short-Term Performance Prediction in Wireless Mesh Networks
May 10, 2011, 12:00am PDT
Traditionally, the performance of Wireless Mesh Networks (WMNs) is measured by long-term averaged metrics, such as long-term averaged packet delivery ratio or throughput. However, due to the...
Provided by University of California
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White Papers
Formal Modeling Execution Semantic of Control and Data Flow for the Composition Web Services
May 1, 2011, 12:00am PDT
Web Services Composition (WSC)-based applications are widely used in the heterogeneous environment, which has inevitably led to the need for reliable mechanisms for the WSC paradigm that can...
Provided by University of California
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White Papers
Reliability-Aware Geocast for Mobile Ad Hoc Networks
September 1, 2011, 12:00am PDT
The authors present a geocast protocol for mobile ad hoc networks that selects the most statistically reliable path towards the geocast region. The novel aspect of their protocol is the...
Provided by University of California
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White Papers
TraJECT-3D: Generating Realistic Mobility Traces for Tactical Network Simulation
August 12, 2011, 12:00am PDT
The authors present TraJECT-3D (Track and Junction based Exploit over Complex Terrain), a realistic generator of node movement trajectories for simulating tactical Mobile Ad-Hoc NETworks (MANETs)....
Provided by University of California
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Modeling and Verifying a Broad Array of Network Properties
April 28, 2009, 12:00am PDT
Motivated by widely observed examples in nature, society and software, where groups of related nodes arrive together and attach to existing networks, the authors consider network growth via...
Provided by University of California
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White Papers
Percolation on Interacting Networks
July 6, 2009, 12:00am PDT
Most networks of interest do not live in isolation. Instead they form components of larger systems in which multiple networks with distinct topologies coexist and where elements distributed...
Provided by University of California
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White Papers
A Revenue Enhancing Stackelberg Game for Owners in Opportunistic Spectrum Access
January 1, 2012, 12:00am PST
A Stackelberg game between three players; spectrum owner, primary users and secondary users is presented under the Opportunistic Spectrum Access (OSA) model, where the secondary users share the...
Provided by University of California
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White Papers
Exploiting Interference Diversity for Event-Based Spectrum Sensing
August 21, 2008, 12:00am PDT
Spectrum sensing is a core problem in cognitive radio. Detecting the presence/absence of very weak primary users with a single antenna can be very difficult. Environmental uncertainties result in...
Provided by University of California
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White Papers
A Distributed Algorithm for Optimal Throughput and Fairness in Wireless Networks With a General Interference Model
June 18, 2008, 12:00am PDT
In multi-hop wireless networks, earlier research on joint scheduling and congestion control has suggested that MAC-layer scheduling is the bottleneck. Distributed scheduling for maximal throughput...
Provided by University of California
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