- Subscribe to this page:
- RSS
- Email Alert
University of Wisconsin-Madison
(66 results)-
White Papers
On the Accuracy of TCP Throughput Prediction for Opportunistic Wireless Networks
May 1, 2009, 12:00am PDT
The increasing density of WiFi Access Points (APs) in metropolitan areas is enabling an opportunistic model of wireless networking, whereby a "Guest" user within range of one or more wireless APs...
Provided by University of Wisconsin-Madison
-
White Papers
Towards Eco-Friendly Database Management Systems
December 16, 2008, 12:00am PST
Database Management Systems (DBMSs) have largely ignored the task of managing the energy consumed during query processing. Both economical and environmental factors now require that DBMSs pay...
Provided by University of Wisconsin-Madison
-
White Papers
An Empirical Study of Malware Evolution
December 4, 2008, 12:00am PST
The diversity, sophistication and availability of malicious software (malcode/malware) pose enormous challenges for securing networks and end hosts from attacks. This paper analyzes a large corpus...
Provided by University of Wisconsin-Madison
-
White Papers
Enhancing the Reliability of TCP With Network Coding
April 27, 2009, 12:00am PDT
Reliable transport protocols such as TCP are tuned to perform well in traditional networks where packet losses occur mostly because of congestion. However, networks with wireless and other lossy...
Provided by University of Wisconsin-Madison
-
White Papers
Router-Level Spam Filtering Using TCP Fingerprints: Architecture and Measurement-Based Evaluation
July 17, 2009, 12:00am PDT
Email spam has become costly and difficult to manage in recent years. Many of the mechanisms used for controlling spam are located at local SMTP servers and end-host machines. These mechanisms can...
Provided by University of Wisconsin-Madison
-
White Papers
An Analysis of Data Corruption in the Storage Stack
April 25, 2008, 12:00am PDT
An important threat to reliable storage of data is silent data corruption. In order to develop suitable protection mechanisms against data corruption, it is essential to understand its...
Provided by University of Wisconsin-Madison
-
White Papers
RouterLevel Spam Filtering Using TCP Fingerprints: Architecture and Measurement-Based Evaluation
July 17, 2009, 12:00am PDT
Email spam has become costly and difficult to manage in recent years. Many of the mechanisms used for controlling spam are located at local SMTP servers and end-host machines. These mechanisms can...
Provided by University of Wisconsin-Madison
-
White Papers
Power Awareness in Network Design and Routing
October 19, 2009, 12:00am PDT
Increased scaling of bandwidth has been a prime driving force behind the growth and popularity of Internet. However, increase in various bandwidths has led to greater power consumption. Several...
Provided by University of Wisconsin-Madison
-
White Papers
Eliminating Handoff Latencies in 802.11 WLANs Using Multiple Radios: Applications, Experience, and Evaluation
January 1, 2010, 12:00am PST
Deployment of Voice-over IP (VoIP) and other real-time streaming applications has been somewhat limited in wireless LANs today, partially because of the high handoff latencies experienced by...
Provided by University of Wisconsin-Madison
-
White Papers
Turning Cluster Management Into Data Management: A System Overview
January 7, 2010, 12:00am PST
This paper introduces the CondorJ2 cluster management system. Traditionally, cluster management systems such as Condor employ a process-oriented approach with little or no use of modern database...
Provided by University of Wisconsin-Madison
-
White Papers
Get the Parallelism Out of My Cloud
April 29, 2010, 12:00am PDT
The hardware trend toward multicore processors has so far been driven by technology limitations of wire delays, power efficiency, and limited capability to exploit instruction-level parallelism....
Provided by University of Wisconsin-Madison
-
White Papers
Pro Ling Grid Data Transfer Protocols and Servers
January 1, 2010, 12:00am PST
The trend of data intensive grid applications has brought grid storage protocols and servers into focus. The objective of this study is to gain an understanding of how time is spent in the storage...
Provided by University of Wisconsin-Madison
-
White Papers
Network-Level QoS Assurances Through Adaptive Allocation of CDMA Resources
January 1, 2010, 12:00am PST
In a Code Division Multiple Access (CDMA) network, multiple Mobile Hosts (MHs) can simultaneously transmit over the wireless channel by using different codes. To assure an acceptable Quality of...
Provided by University of Wisconsin-Madison
-
White Papers
Multiscalar Processors
January 1, 2010, 12:00am PST
Multiscalar processors use a new, aggressive implementation paradigm for extracting large quantities of instruction level parallelism from ordinary high level language programs. A single program...
Provided by University of Wisconsin-Madison
-
White Papers
MobiStream: Error-Resilient Video Streaming in Wireless WANs Using Virtual Channels
January 1, 2010, 12:00am PST
This paper presents MobiStream - a video streaming system that exploits the perceptual value in video content and the characteristics of the link layer and physical layer channels to enable...
Provided by University of Wisconsin-Madison
-
White Papers
ARC: An Approach to Flexible and Robust RAID Systems
May 16, 2008, 12:00am PDT
RAID systems increase data storage reliability by employing one or more data integrity techniques such as parity or checksum. However, the current implementations of software RAID systems suffer...
Provided by University of Wisconsin-Madison
-
White Papers
A First Look at Problems in the Cloud
May 26, 2010, 12:00am PDT
Cloud computing provides a revolutionary model for the deployment of enterprise applications and Web services alike. In this new model, cloud users save on the cost of purchasing and managing base...
Provided by University of Wisconsin-Madison
-
White Papers
Diagnosing Wireless Packet Losses in 802.11: Separating Collision From Weak Signal
July 3, 2007, 12:00am PDT
It is well known that a packet loss in 802.11 can happen either due to collision or an insufficiently strong signal. However, discerning the exact cause of a packet loss, once it occurs, is known...
Provided by University of Wisconsin-Madison
-
White Papers
Understanding the Limitations of Transmit Power Control for Indoor WLANs
August 28, 2007, 12:00am PDT
A wide range of Transmit Power Control (TPC) algorithms have been proposed in recent literature to reduce interference and increase capacity in 802.11 wireless networks. However, few of them have...
Provided by University of Wisconsin-Madison
-
White Papers
On the Feasibility of the Link Abstraction in (Rural) Mesh Networks
January 26, 2008, 12:00am PST
Outdoor community mesh networks based on 802.11 have seen tremendous growth in the recent past. The current understanding is that wireless link performance in these settings in inherently...
Provided by University of Wisconsin-Madison
-
White Papers
Scalable WiFi Media Delivery Through Adaptive Broadcasts
July 14, 2010, 12:00am PDT
Current WiFi Access Points (APs) choose transmission parameters when emitting wireless packets based solely on channel conditions. In this work the authors explore the benefits of deciding packet...
Provided by University of Wisconsin-Madison
-
White Papers
Building and Testing a Production Quality Grid Software Distribution for Open Science Grid
October 6, 2009, 12:00am PDT
The authors describe how the authors integrate, build, and test the Open Science Grid (OSG) software stack, which is used to provide a production quality infrastructure for grid sites and users...
Provided by University of Wisconsin-Madison
-
White Papers
StealthTest: Low Overhead Online Software Testing Using Transactional Memory
September 1, 2009, 12:00am PDT
Software testing is hard. The emergence of multicore architectures and the proliferation of bug-prone multithreaded software makes testing even harder. To this end, researchers have proposed...
Provided by University of Wisconsin-Madison
-
White Papers
Condition Variables and Transactional Memory: Problem or Opportunity?
February 4, 2009, 12:00am PST
Condition variables complement locks by allowing a program to specify the order of execution. They have been in use, largely unchanged, for three decades and have proved to be a robust and...
Provided by University of Wisconsin-Madison
-
White Papers
TokenTM: Efficient Execution of Large Transactions with Hardware Transactional Memory
June 1, 2008, 12:00am PDT
Current hardware transactional memory systems seek to simplify parallel programming, but assume that large transactions are rare, so it is acceptable to penalize their performance or concurrency....
Provided by University of Wisconsin-Madison
-
White Papers
OS Support for Virtualizing Hardware Transactional Memory
February 15, 2008, 12:00am PST
Transactional memory promises to simplify multithreaded programming. Hardware TM (HTM) implementations promise better performance by augmenting processors with transactional state. However, HTMs...
Provided by University of Wisconsin-Madison
-
White Papers
Pathological Interaction of Locks with Transactional Memory
February 11, 2008, 12:00am PST
Transactional Memory (TM) promises to simplify multithreaded programming. Transactions provide mutual exclusion without the possibility of deadlock and the need to assign locks to data structures....
Provided by University of Wisconsin-Madison
-
White Papers
Design and Implementation of Signatures for Transactional Memory Systems
August 1, 2007, 12:00am PDT
Transactional Memory (TM) systems ease multithreaded application development by giving the programmer the ability to specify that some regions of code, called transactions, must be executed...
Provided by University of Wisconsin-Madison
-
White Papers
Safe and Efficient Supervised Memory Systems
December 10, 2010, 12:00am PST
Supervised Memory systems use out-of-band metabits to control and monitor accesses to normal data memory for such purposes as transactional memory and memory type state trackers. Previous...
Provided by University of Wisconsin-Madison
-
White Papers
Calvin: Deterministic or Not? Free Will to Choose
December 12, 2010, 12:00am PST
Most shared memory systems maximize performance by unpredictably resolving memory races. Unpredictable memory races can lead to non-determinism in parallel programs, which can suffer from...
Provided by University of Wisconsin-Madison
-
White Papers
A Framework for Reliable and Efficient Data Placement in Distributed Computing Systems
January 1, 2011, 12:00am PST
Data placement is an essential part of today's distributed applications since moving the data close to the application has many benefits. The increasing data requirements of both scientific and...
Provided by University of Wisconsin-Madison
-
White Papers
Profiling Heterogeneous Multi-GPU Systems to Accelerate Cortically Inspired Learning Algorithms
January 31, 2011, 12:00am PST
Recent advances in neuroscientific understanding make parallel computing devices modeled after the human neocortex a plausible, attractive, fault-tolerant, and energy efficient possibility. Such...
Provided by University of Wisconsin-Madison
-
White Papers
The Case for a Structured Approach to Managing Unstructured Data
January 7, 2009, 12:00am PST
The challenge of managing unstructured data represents per-haps the largest data management opportunity for the community since managing relational data. And yet the authors are risking letting...
Provided by University of Wisconsin-Madison
-
White Papers
Efficient Information Extraction Over Evolving Text Data
November 22, 2007, 12:00am PST
Most current Information Extraction (IE) approaches have considered only static text corpora, over which the authors typically have to apply IE only once. Many real-world text corpora however are...
Provided by University of Wisconsin-Madison
-
White Papers
Information Extraction Challenges in Managing Unstructured Data
December 23, 2008, 12:00am PST
Over the past few years, the authors have been trying to build an end-to-end system at Wisconsin to manage unstructured data, using extraction, integration, and user interaction. This paper...
Provided by University of Wisconsin-Madison
-
White Papers
Optimizing SQL Queries Over Text Databases
November 24, 2007, 12:00am PST
Text documents often embed data that is structured in nature, and the authors can expose this structured data using information extraction technology. By processing a text database with...
Provided by University of Wisconsin-Madison
-
White Papers
An Accurate Flip-Flop Selection Technique for Reducing Logic SER
March 17, 2008, 12:00am PDT
The combination of continued technology scaling and increased on-chip transistor densities has made vulnerability to radiation induced soft errors a significant design concern. In particular, the...
Provided by University of Wisconsin-Madison
-
White Papers
MadCache: A PC-Aware Cache Insertion Policy
June 4, 2010, 12:00am PDT
While the field of computer architecture is always looking for novel research directions to bring improved performance and efficiency, it is often simple improvements to more mature topics that...
Provided by University of Wisconsin-Madison
-
White Papers
Leveraging Progress in Neurobiology for Computing Systems
December 9, 2009, 12:00am PST
Whether future technologies will be ultra-small CMOS transistors, nanotubes, or even individual molecules or biological cells, these elementary components all share several common properties: they...
Provided by University of Wisconsin-Madison
-
White Papers
Cortical Columns: Building Blocks for Intelligent Systems
January 1, 2011, 12:00am PST
The neocortex appears to be a very efficient, uniformly structured, and hierarchical computational system. Researchers have made significant efforts to model intelligent systems that mimic these...
Provided by University of Wisconsin-Madison
-
Whitepapers
Multi-Instance Security and Its Application to Password-Based Cryptography
November 1, 2011, 12:00am PDT
This paper develops a theory of multi-instance (mi) security and applies it to provide the first proof-based support for the classical practice of salting in password-based cryptography....
Provided by University of Wisconsin-Madison
-
White Papers
Offline and Online Network Traffic Characterization
November 26, 2007, 12:00am PST
This paper investigates a new technique called Bayesian-Block-Analysis (BBA) for analyzing the time varying rate of events. The first goal is to evaluate the accuracy of BBA in identifying the...
Provided by University of Wisconsin-Madison
-
White Papers
DiskRouter: A Flexible Infrastructure for High Performance Large Scale Data Transfers
January 1, 2012, 12:00am PST
The steady increase in data sets of scientific applications, the trend towards collaborative research and the emergence of grid computing has created a need to move large quantities of data over...
Provided by University of Wisconsin-Madison
-
White Papers
Compressed Channel Sensing: A New Approach to Estimating Sparse Multipath Channels
January 30, 2010, 12:00am PST
High-rate data communication over a multipath wireless channel often requires that the channel response be known at the receiver. Training-based methods, which probe the channel in time,...
Provided by University of Wisconsin-Madison
-
White Papers
Exploiting Route Diversity in Multi-Packet Transmission Using Mutual Information Accumulation
July 6, 2011, 12:00am PDT
The authors consider cooperative communication in a given network using rateless codes. Given a network, a source and a destination, they investigate routing and resource allocation for delivering...
Provided by University of Wisconsin-Madison
-
White Papers
The Best of Both Worlds With On-Demand Virtualization
April 11, 2011, 12:00am PDT
Virtualization offers many benefits such as live migration, resource consolidation, and checkpointing. However, there are many cases where the overhead of virtualization is too high to justify for...
Provided by University of Wisconsin-Madison
-
White Papers
On Some Sufficient Conditions for Distributed QoS Support in Wireless Networks
September 4, 2011, 12:00am PDT
Given a wireless network where some pairs of communication links interfere with each other, the authors study sufficient conditions for determining whether a given set of minimum bandwidth...
Provided by University of Wisconsin-Madison
-
White Papers
Structured Statistical Precoding for Correlated MIMO Channels
January 7, 2008, 12:00am PST
The focus of this paper is on spatial precoding in correlated multi-antenna channels where the number of independent data-streams can be adapted to trade-off the data-rate with the transmitter...
Provided by University of Wisconsin-Madison
-
White Papers
A Comparative Study of Handheld and Non-Handheld Traffic in Campus Wi-Fi Networks
January 14, 2011, 12:00am PST
Handheld devices such as smartphones have become a major platform for accessing Internet services. The small, mobile nature of these devices results in a unique mix of network usage. Other studies...
Provided by University of Wisconsin-Madison
-
White Papers
How Does Finance Affect Growth? Evidence From A Natural Experiment In Venezuela
January 7, 2009, 12:00am PST
This paper examines the relation between financial development and economic growth by looking at plant-level evidence. The author argues that by focusing on a largely exogenous event, the...
Provided by University of Wisconsin-Madison
-
White Papers
Financial Constraint, Liquidity Management, And Investment
September 1, 2007, 12:00am PDT
Fazzari, Hubbard, and Petersen (1988) convincingly argue that internal versus external sources of finance are imperfect substitutes in the context of funding investment, and hence that financial...
Provided by University of Wisconsin-Madison
-
White Papers
Leadership And Reform: Mapping The Causal Pathways Of Performance Information Use
October 3, 2009, 12:00am PDT
This paper offers empirical evidence on a specific question: how does leadership foster the use of performance data? More broadly, it informs the ways in which the people understand how leadership...
Provided by University of Wisconsin-Madison
-
White Papers
Privacy-Preserving Classification of Horizontally Partitioned Data Via Random Kernels
May 13, 2008, 12:00am PDT
The authors propose a novel privacy-preserving nonlinear Support Vector Machine (SVM) classifier for a data matrix A whose columns represent input space features and whose individual rows are...
Provided by University of Wisconsin-Madison
-
White Papers
Selectivity Estimation for XML Twigs
January 1, 2011, 12:00am PST
Twig queries represent the building blocks of declarative query languages over XML data. A twig query describes a complex traversal of the document graph and generates a set of element tuples...
Provided by University of Wisconsin-Madison
-
White Papers
Dynamic Re-Grouping of Continuous Queries
January 1, 2011, 12:00am PST
In this paper, the authors design and evaluate an efficient and dynamic regrouping approach to optimize a large continuous query workload. The key idea of the authors' regrouping algorithm is to...
Provided by University of Wisconsin-Madison
-
White Papers
Rate-Based Query Optimization for Streaming Information Sources
January 1, 2011, 12:00am PST
Query optimizers typically attempt to minimize response time. While this approach has been and continues to be very successful in traditional environments, in the presence of information sources...
Provided by University of Wisconsin-Madison
-
White Papers
A Comparison of Three Methods for Join View Maintenance in Parallel RDBMS
January 1, 2011, 12:00am PST
In a typical data warehouse, materialized views are used to speed up query execution. Upon updates to the base relations in the warehouse, these materialized views must also be maintained. The...
Provided by University of Wisconsin-Madison
-
White Papers
DBMSs on a Modern Processor: Where Does Time Go?
January 1, 2011, 12:00am PST
Recent high-performance processors employ sophisticated techniques to overlap and simultaneously execute multiple computation and memory operations. Intuitively, these techniques should help...
Provided by University of Wisconsin-Madison
-
White Papers
Improved Histograms for Selectivity Estimation of Range Predicates
January 1, 2011, 12:00am PST
Many commercial database systems maintain histograms to summarize the contents of relations and permit efficient estimation of query result sizes and access plan costs. Although several types of...
Provided by University of Wisconsin-Madison
-
White Papers
A Case for Fractured Mirrors
January 1, 2011, 12:00am PST
The Decomposition Storage Model (DSM) vertically partitions all attributes of a given relation. DSM has excellent I/O behavior when the number of attributes touched in the query is small. It also...
Provided by University of Wisconsin-Madison
-
White Papers
IDB: Toward the Scalable Integration of Queryable Internet Data Sources
January 1, 2011, 12:00am PST
As the number of databases accessible on the Web grows, the ability to execute queries spanning multiple heterogeneous queryable sources is becoming increasingly important. To date, research in...
Provided by University of Wisconsin-Madison
-
White Papers
Form-Based Proxy Caching for Database-Backed Web Sites
January 1, 2011, 12:00am PST
The authors explore a new proxy-caching framework that exploits the query semantics of HTML forms. They identify a common class of form-based queries, and study two representative caching schemes...
Provided by University of Wisconsin-Madison
-
White Papers
NiagaraCQ: A Scalable Continuous Query System for Internet Databases
January 1, 2011, 12:00am PST
Continuous queries are persistent queries that allow users to receive new results when they become available. While continuous query systems can transform a passive web into an active environment,...
Provided by University of Wisconsin-Madison
-
White Papers
Why Financial Frictions And Currency Mismatches Do Not Affect Traditional Mundell-Fleming Results
November 30, 2007, 12:00am PST
This paper develops a dynamic general equilibrium model derived from first principles to determine whether traditional Mundell-Fleming results hold when currency mismatches and - financial...
Provided by University of Wisconsin-Madison
-
White Papers
Cortical Columns: Building Blocks for Intelligent Systems
January 1, 2011, 12:00am PST
The neocortex appears to be a very efficient, uniformly structured, and hierarchical computational system. Researchers have made significant efforts to model intelligent systems that mimic these...
Provided by University of Wisconsin-Madison
-
White Papers
Leveraging Progress in Neurobiology for Computing Systems
December 9, 2009, 12:00am PST
Whether future technologies will be ultra-small CMOS transistors, nanotubes, or even individual molecules or biological cells, these elementary components all share several common properties: they...
Provided by University of Wisconsin-Madison
-
White Papers
MadCache: A PC-Aware Cache Insertion Policy
June 4, 2010, 12:00am PDT
While the field of computer architecture is always looking for novel research directions to bring improved performance and efficiency, it is often simple improvements to more mature topics that...
Provided by University of Wisconsin-Madison
-
White Papers
An Accurate Flip-Flop Selection Technique for Reducing Logic SER
March 17, 2008, 12:00am PDT
The combination of continued technology scaling and increased on-chip transistor densities has made vulnerability to radiation induced soft errors a significant design concern. In particular, the...
Provided by University of Wisconsin-Madison
-
White Papers
Optimizing SQL Queries Over Text Databases
November 24, 2007, 12:00am PST
Text documents often embed data that is structured in nature, and the authors can expose this structured data using information extraction technology. By processing a text database with...
Provided by University of Wisconsin-Madison
-
White Papers
Information Extraction Challenges in Managing Unstructured Data
December 23, 2008, 12:00am PST
Over the past few years, the authors have been trying to build an end-to-end system at Wisconsin to manage unstructured data, using extraction, integration, and user interaction. This paper...
Provided by University of Wisconsin-Madison
-
White Papers
Efficient Information Extraction Over Evolving Text Data
November 22, 2007, 12:00am PST
Most current Information Extraction (IE) approaches have considered only static text corpora, over which the authors typically have to apply IE only once. Many real-world text corpora however are...
Provided by University of Wisconsin-Madison
-
White Papers
The Case for a Structured Approach to Managing Unstructured Data
January 7, 2009, 12:00am PST
The challenge of managing unstructured data represents per-haps the largest data management opportunity for the community since managing relational data. And yet the authors are risking letting...
Provided by University of Wisconsin-Madison
-
White Papers
Profiling Heterogeneous Multi-GPU Systems to Accelerate Cortically Inspired Learning Algorithms
January 31, 2011, 12:00am PST
Recent advances in neuroscientific understanding make parallel computing devices modeled after the human neocortex a plausible, attractive, fault-tolerant, and energy efficient possibility. Such...
Provided by University of Wisconsin-Madison
-
White Papers
A Framework for Reliable and Efficient Data Placement in Distributed Computing Systems
January 1, 2011, 12:00am PST
Data placement is an essential part of today's distributed applications since moving the data close to the application has many benefits. The increasing data requirements of both scientific and...
Provided by University of Wisconsin-Madison
-
White Papers
Calvin: Deterministic or Not? Free Will to Choose
December 12, 2010, 12:00am PST
Most shared memory systems maximize performance by unpredictably resolving memory races. Unpredictable memory races can lead to non-determinism in parallel programs, which can suffer from...
Provided by University of Wisconsin-Madison
-
White Papers
Safe and Efficient Supervised Memory Systems
December 10, 2010, 12:00am PST
Supervised Memory systems use out-of-band metabits to control and monitor accesses to normal data memory for such purposes as transactional memory and memory type state trackers. Previous...
Provided by University of Wisconsin-Madison
-
White Papers
Design and Implementation of Signatures for Transactional Memory Systems
August 1, 2007, 12:00am PDT
Transactional Memory (TM) systems ease multithreaded application development by giving the programmer the ability to specify that some regions of code, called transactions, must be executed...
Provided by University of Wisconsin-Madison
-
White Papers
Pathological Interaction of Locks with Transactional Memory
February 11, 2008, 12:00am PST
Transactional Memory (TM) promises to simplify multithreaded programming. Transactions provide mutual exclusion without the possibility of deadlock and the need to assign locks to data structures....
Provided by University of Wisconsin-Madison
-
White Papers
OS Support for Virtualizing Hardware Transactional Memory
February 15, 2008, 12:00am PST
Transactional memory promises to simplify multithreaded programming. Hardware TM (HTM) implementations promise better performance by augmenting processors with transactional state. However, HTMs...
Provided by University of Wisconsin-Madison
-
White Papers
TokenTM: Efficient Execution of Large Transactions with Hardware Transactional Memory
June 1, 2008, 12:00am PDT
Current hardware transactional memory systems seek to simplify parallel programming, but assume that large transactions are rare, so it is acceptable to penalize their performance or concurrency....
Provided by University of Wisconsin-Madison
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!
