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University of Maryland
(345 results)-
White Papers
Sticky Wages, Incomplete Pass-Through And Inflation Targeting: What Is The Right Index To Target?
August 1, 2010, 12:00am PDT
This paper studies monetary policy rules in a small open economy with Inflation Targeting, incomplete pass-through and rigid nominal wages. The paper shows that, when nominal wages are fully...
Provided by University of Maryland
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White Papers
Enforcing Secure and Robust Routing With Declarative Policies
August 28, 2010, 12:00am PDT
Internet routers must adhere to many polices governing the selection of paths that meet potentially complex constraints on length, security, symmetry and organizational preferences. Many routing...
Provided by University of Maryland
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White Papers
Coping With Node Misbehaviors in Ad Hoc Networks: A Multi-Dimensional Trust Management Approach
March 16, 2010, 12:00am PDT
Nodes in Mobile Ad hoc NETworks (MANETs) are required to relay data packets to enable communication between other nodes that are not in radio range with each other. However, whether for selfish or...
Provided by University of Maryland
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White Papers
Correcting Routing Failures Using Declarative Policies and Argumentation
October 16, 2010, 12:00am PDT
Many Internet failures are caused by misconfigurations of the BGP routers that manage routing of traffic between domains. The problems are usually due to a combination of human errors and the lack...
Provided by University of Maryland
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White Papers
Policy-Based Malicious Peer Detection in Ad Hoc Networks
August 17, 2009, 12:00am PDT
Mobile Ad hoc NETworks (MANETs) are susceptible to various node misbehaviors due to their unique features, such as highly dynamic network topology, rigorous power constraints and error-prone...
Provided by University of Maryland
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White Papers
Outlier Detection in Ad Hoc Networks Using Dempster-Shafer Theory
March 15, 2009, 12:00am PDT
Mobile Ad-hoc NETworks (MANETs) are known to be vulnerable to a variety of attacks due to lack of central authority or fixed network infrastructure. Many security schemes have been proposed to...
Provided by University of Maryland
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White Papers
A Framework for Secure Knowledge Management in Pervasive Computing
September 29, 2008, 12:00am PDT
A feature common too many pervasive computing scenarios is that devices acquire information about their environment from peers through short-range ad-hoc wireless connections and use it to...
Provided by University of Maryland
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White Papers
Social Ties and Their Relevance to Churn in Mobile Telecom Networks
March 30, 2008, 12:00am PDT
Social Network Analysis has emerged as a key paradigm in modern sociology, technology, and information sciences. The paradigm stems from the view that the attributes of an individual in a network...
Provided by University of Maryland
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White Papers
State-Dependent Risk Preferences in Evolutionary Games
January 7, 2010, 12:00am PST
There is much empirical evidence that human decision-making under risk does not correspond the decision-theoretic notion of "Rational" decision making, namely to make choices that maximize the...
Provided by University of Maryland
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White Papers
XTOLS: Cross-Tier Oracle Label Security
April 1, 2009, 12:00am PDT
SELINKS allows cross-tier security enforcement between the application tier and the database tier by compiling policy functions and database queries into User-Defined Functions (UDFs) and SQL...
Provided by University of Maryland
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White Papers
Stay or Go? Participation in Under-Provisioned Video Streams
October 21, 2009, 12:00am PDT
The authors consider the problem of choosing whether or not to participate in a video streaming session under the condition that there is insufficient upload capacity to serve all peers. This...
Provided by University of Maryland
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White Papers
Punishment in Selfish Wireless Networks: A Game Theoretic Analysis
January 1, 2011, 12:00am PST
In currently deployed wireless networks, rational participants have no incentive to cooperatively forward traffic for others. Though much work has focused on providing such incentives, few have...
Provided by University of Maryland
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White Papers
Reducing the Enviromental Footprint of Personal Computers and Datacenters
May 1, 2008, 12:00am PDT
As the demand for energy swells from the growth of expanding technology, green computing has emerged as the trend to combat this potential disaster. Computers and Datacenters have become an...
Provided by University of Maryland
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White Papers
Enforcing Security in Semantics Driven Policy Based Networks
January 25, 2008, 12:00am PST
Security is emerging as an important requirement for a number of distributed applications such as online banking, social networking etc. due to the private nature of the data being involved....
Provided by University of Maryland
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White Papers
Managing the Quality of Virtualized Services
February 4, 2011, 12:00am PST
Managing the quality of virtualized services that are delivered on the cloud is very challenging. Such services are often composed of smaller components that are assembled on an as-needed basis....
Provided by University of Maryland
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White Papers
Using Linked Data to Interpret Tables
October 7, 2010, 12:00am PDT
Vast amounts of information are available in structured forms like spreadsheets, database relations, and tables found in documents and on the Web. The Authors describe an approach that uses linked...
Provided by University of Maryland
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White Papers
T2LD: Interpreting and Representing Tables as Linked Data
September 26, 2010, 12:00am PDT
A vast amount of information is available in structured forms like spreadsheets, database relations, and tables in documents found on the Web. The authors describe a framework for interpreting...
Provided by University of Maryland
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White Papers
Exploiting a Web of Semantic Data for Interpreting Tables
April 27, 2010, 12:00am PDT
Much of the world's knowledge is contained in structured documents like spreadsheets, database relations and tables in documents found on the Web and in print. The information in these tables...
Provided by University of Maryland
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White Papers
Analyzing the Structure and Evolution of Massive Telecom Graphs
July 8, 2008, 12:00am PDT
With ever growing competition in telecommunications markets, operators have to increasingly rely on business intelligence to offer the right incentives to their customers. Existing approaches for...
Provided by University of Maryland
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White Papers
Towards a Declarative Framework for Managing Application and Network Adaptations
August 14, 2009, 12:00am PDT
Cross layer optimizations are increasingly being used in a variety of applications to improve application performance. However most of these implementations are ad hoc and performed on a per...
Provided by University of Maryland
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White Papers
Sensor Web Design Studies for Realtime Dynamic Congestion Pricing
January 1, 2011, 12:00am PST
Traffic Congestion is a multi-billion dollar national problem and worsening every year with population growth and increase in freight traffic. The Authors present a model for realistic simulation...
Provided by University of Maryland
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White Papers
Performance of Batch-Based Digital Signatures
January 1, 2011, 12:00am PST
A Digital Signature is an important type of authentication in a public-key (or asymmetric) cryptographic system, and it is in wide use. The performance of an Internet server computing digital...
Provided by University of Maryland
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White Papers
Prioritizing User-Session-Based Test Cases For Web Applications Testing
April 15, 2008, 12:00am PDT
Web applications have rapidly become a critical part of business for many organizations. However, increased usage of web applications has not been reciprocated with corresponding increases in...
Provided by University of Maryland
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White Papers
An Interaction-Based Test Sequence Generation Approach for Testing Web Applications
September 5, 2008, 12:00am PDT
Web applications often use dynamic pages that interact with each other by accessing shared objects, e.g., session objects. Interactions between dynamic pages need to be carefully tested, as they...
Provided by University of Maryland
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White Papers
FABLE: A Language for Enforcing User-Defined Security Policies
March 6, 2008, 12:00am PST
This paper presents FABLE, a core formalism for a programming language in which programmers may specify security policies and reason that these policies are properly enforced. In FABLE, security...
Provided by University of Maryland
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White Papers
Managing Policy Updates in Security-Typed Languages
January 30, 2008, 12:00am PST
This paper presents RX, a new security-typed programming language with features intended to make the management of information-flow policies more practical. Security labels in RX, in contrast to...
Provided by University of Maryland
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White Papers
Fair Scheduling in OFDMA-Based Wireless Systems With QoS Constraints
November 8, 2007, 12:00am PST
In this work the authors consider the problem of downlink resource allocation for proportional fairness of long term received rates of data users and quality of service for real time sessions in...
Provided by University of Maryland
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White Papers
Practical Resource Allocation Algorithms for QoS in OFDMA-Based Wireless Systems
November 8, 2007, 12:00am PST
In this work the authors propose an efficient resource allocation algorithm for OFDMA based wireless systems supporting heterogeneous traffic. The proposed algorithm provides proportionally...
Provided by University of Maryland
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White Papers
A New Data Processing Inequality and Its Applications in Distributed Source and Channel Coding
February 1, 2008, 12:00am PST
In the distributed coding of correlated sources, the problem of characterizing the joint probability distribution of a pair of random variables satisfying an n-letter Markov chain arises. The...
Provided by University of Maryland
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White Papers
The Secrecy Capacity Region of the Gaussian MIMO Multi-Receiver Wiretap Channel
March 18, 2009, 12:00am PDT
In this paper, the authors consider the Gaussian Multiple-Input Multiple-Output (MIMO) multi-receiver wiretap channel in which a transmitter wants to have confidential communication with an...
Provided by University of Maryland
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White Papers
Signing a Linear Subspace: Signature Schemes for Network Coding
October 20, 2008, 12:00am PDT
Network coding offers increased throughput and improved robustness to random faults in completely decentralized networks. In contrast to traditional routing schemes, however, network coding...
Provided by University of Maryland
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White Papers
Consensus Answers for Queries Over Probabilistic Databases
December 10, 2008, 12:00am PST
The authors address the problem of finding a "Best" deterministic query answer to a query over a probabilistic database. For this purpose, they propose the notion of a consensus world (or a...
Provided by University of Maryland
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White Papers
One-Round Password-Based Authenticated Key Exchange
June 25, 2010, 12:00am PDT
The authors show a general framework for constructing password-based authenticated key exchange protocols with optimal round complexity - one message per party, sent simultaneously - in the...
Provided by University of Maryland
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White Papers
A New Framework for Password-Based Authenticated Key Exchange
June 22, 2010, 12:00am PDT
Protocols for Password-based Authenticated Key Exchange (PAKE) allow two users who share only a short, low-entropy password to agree on a cryptographically strong session key. The challenge in...
Provided by University of Maryland
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White Papers
VMCrypt - Modular Software Architecture for Scalable Secure Computation
November 16, 2010, 12:00am PST
Garbled circuits play a key role in secure computation. Unlike previous work, which focused mainly on efficiency and automation aspects of secure computation, in this paper the authors focus on...
Provided by University of Maryland
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White Papers
Secure Network Coding Over the Integers
November 23, 2009, 12:00am PST
Network coding has received significant attention in the networking community for its potential to increase throughput and improve robustness without any centralized control. Unfortunately,...
Provided by University of Maryland
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White Papers
Neural Network to Identify Individuals at Health Risk
April 1, 2011, 12:00am PDT
The risk of diseases such as heart attack and high blood pressure could be reduced by adequate physical activity. However, even though majority of general population claims to perform some...
Provided by University of Maryland
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White Papers
Topological Ordering of Function Words in Hierarchical Phrase-Based Translation
May 16, 2009, 12:00am PDT
Hierarchical phrase-based models are attractive because they provide a consistent framework within which to characterize both local and long-distance reorderings, but they also make it difficult...
Provided by University of Maryland
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White Papers
Choosing a Network Management Solution for a Converged Internet Protocol Network
December 1, 2009, 12:00am PST
The coming of age of IP convergence has streamlined to delivery of voice, video, and data. Midsized companies and governmental organizations are collapsing their disparate networks into one,...
Provided by University of Maryland
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White Papers
Prioritizing Component Compatibility Tests Via User Preferences
June 11, 2009, 12:00am PDT
Many software systems rely on third-party components during their build process. Because the components are constantly evolving, quality assurance demands that developers perform compatibility...
Provided by University of Maryland
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White Papers
Formal Specification and Analysis of PCF Protocol in the 802.11 Standard Using Systems of Communicating Machines
January 23, 2012, 12:00am PST
With the widespread usage of the 802.11 protocol, it becomes important to study the protocol operation. In this paper, the authors propose a formal model for the point coordination function of the...
Provided by University of Maryland
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White Papers
Analysis of Explanatory and Predictive Architectures and the Relevance in Explaining the Adoption of IT in SMEs
May 15, 2011, 12:00am PDT
This paper critiques the explanatory and predictive architectures of six prominent innovation adoption theories with a view to unraveling their individual capabilities in providing lenses to the...
Provided by University of Maryland
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White Papers
Towards Shrink-Wrapped Security: Practically Incorporating Context Into Security Services
June 18, 2011, 12:00am PDT
The mobile workforce is rapidly increasing, and technological advances make it feasible for these workers to have ubiquitous access to a variety of resources with various protection requirements....
Provided by University of Maryland
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White Papers
Secure Communication in Multiple Relay Networks Through Decode-and-Forward Strategies
January 30, 2012, 12:00am PST
In this paper, the authors first study the Decode-and-Forward strategy for secrecy in a single-relay network. They propose a suboptimal Decode-and-Forward with Zero Forcing (DF/ZF) strategy for...
Provided by University of Maryland
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White Papers
Degraded Compound Multi-Receiver Wiretap Channels
October 14, 2009, 12:00am PDT
In this paper, the authors study the degraded compound multi-receiver wiretap channel. The degraded compound multi-receiver wiretap channel consists of two groups of users and a group of...
Provided by University of Maryland
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White Papers
Deaf Cooperation and Relay Selection Strategies for Secure Communication in Multiple Relay Networks
February 4, 2012, 12:00am PST
In this paper, the authors investigate the roles of Cooperative Jamming (CJ) and Noise Forwarding (NF) in improving the achievable secrecy rates of a Gaussian WireTap channel (GWT). In particular,...
Provided by University of Maryland
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White Papers
Deaf Cooperation for Secrecy With Multiple Antennas at the Helper
February 19, 2012, 12:00am PST
In this paper, the authors investigate the roles of Cooperative Jamming (CJ) and Noise Forwarding (NF) in improving the achievable secrecy rates of a Gaussian WireTap channel (GWT) when the helper...
Provided by University of Maryland
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White Papers
A New Privacy Enhanced Matchmaking Protocol
December 20, 2007, 12:00am PST
Although several wide-spread internet applications (e.g., job-referral services, dating services) can benefit from online matchmaking, protocols defined over the past two decades fail to address...
Provided by University of Maryland
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White Papers
Universally-Composable Two-Party Computation in Two Rounds
January 1, 2012, 12:00am PST
Round complexity is a central measure of efficiency, and characterizing the round complexity of various cryptographic tasks is of both theoretical and practical importance. The authors show here a...
Provided by University of Maryland
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White Papers
On Black-Box Constructions of Predicate Encryption From Trapdoor Permutations
August 30, 2009, 12:00am PDT
Predicate encryption is a recent generalization of Identity-Based Encryption (IBE), broadcast encryption, attribute-based encryption, and more. A natural question is whether there exist black-box...
Provided by University of Maryland
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White Papers
ITree: Efficiently Discovering High-Coverage Configurations Using Interaction Trees
September 30, 2011, 12:00am PDT
Software configurability has many benefits, but it also makes programs much harder to test, as in the worst case the program must be tested under every possible configuration. One potential remedy...
Provided by University of Maryland
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White Papers
The Network Stack Trace: Performance Diagnosis for Networked Systems
October 4, 2011, 12:00am PDT
Transient network stalls that degrade application performance are frustrating to users and developers alike. Software bugs, network congestion, and intermittent connectivity all have the same...
Provided by University of Maryland
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White Papers
Kitsune: Efficient, General-Purpose Dynamic Software Updating for C
January 18, 2012, 12:00am PST
Dynamic Software Updating (DSU) systems allow programs to be updated while running, thereby allowing developers to add features and fix bugs without downtime. This paper introduces Kitsune, a new...
Provided by University of Maryland
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White Papers
Specifying and Verifying the Correctness of Dynamic Software Updates
December 2, 2010, 12:00am PST
Recently, there has been much interest in Dynamic Software Updating (DSU) systems, which allow running programs to be patched on-the-fly to add features or fix bugs. Open-source and commercial...
Provided by University of Maryland
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White Papers
Tests to the Left of Me, Types to the Right: How Not to Get Stuck in the Middle of a Ruby Execution
June 9, 2009, 12:00am PDT
Ruby is a popular dynamic scripting language that permits terse, expressive code, but provides no static checks to detect errors be-fore running the program. To address this, the authors have...
Provided by University of Maryland
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White Papers
MultiOtter: Multiprocess Symbolic Execution
August 5, 2011, 12:00am PDT
Symbolic execution can be an effective technique for exploring large numbers of program paths, but it has generally been applied to programs running in isolation, whose inputs are files or...
Provided by University of Maryland
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White Papers
State Transfer for Clear and Efficient Runtime Updates
January 4, 2011, 12:00am PST
Dynamic Software Updating (DSU), the practice of updating software while it executes, is a lively area of research. The DSU approach most prominent in both commercial and research systems is...
Provided by University of Maryland
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White Papers
Dynamic Enforcement of Knowledge-Based Security Policies
April 21, 2011, 12:00am PDT
This paper explores the idea of knowledge-based security policies, which are used to decide whether to answer queries over secret data based on an estimation of the querier's (possibly increased)...
Provided by University of Maryland
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White Papers
Evaluating Dynamic Software Update Safety Using Systematic Testing
September 23, 2011, 12:00am PDT
Dynamic Software Updating (DSU) systems patch programs on the fly without incurring downtime. To avoid failures due to the updating process itself, many DSU systems employ timing restrictions....
Provided by University of Maryland
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White Papers
Directed Symbolic Execution
June 10, 2011, 12:00am PDT
In this paper, the authors study the problem of automatically finding program executions that reach a particular target line. This problem arises in many debugging scenarios; for example, a...
Provided by University of Maryland
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White Papers
A Demo of Coco: A Compiler for Monadic Coercions in ML
August 29, 2011, 12:00am PDT
Combining monadic computations may induce a significant syntactic overhead. To allow monadic programming in direct style, the authors have developed Coco, a type-based tool that automatically...
Provided by University of Maryland
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White Papers
An Alternative Proof for the Capacity Region of the Degraded Gaussian MIMO Broadcast Channel
February 18, 2010, 12:00am PST
The Gaussian Multiple-Input Multiple-Output (MIMO) broadcast channel consists of one transmitter and an arbitrary number of receivers, where the transmitter and receivers are equipped with...
Provided by University of Maryland
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White Papers
Optimal Packet Scheduling in an Energy Harvesting Communication System
June 9, 2010, 12:00am PDT
The authors consider the optimal packet scheduling problem in a single-user energy harvesting wireless communication system. In this system, both the data packets and the harvested energy are...
Provided by University of Maryland
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White Papers
Capacity Region of Gaussian MIMO Broadcast Channels With Common and Confidential Messages
February 25, 2010, 12:00am PST
The authors study the two-user Gaussian Multiple-Input Multiple-Output (MIMO) broadcast channel with common and confidential messages. In this channel, the transmitter sends a common message to...
Provided by University of Maryland
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White Papers
Capacity-Equivocation Region of the Gaussian MIMO Wiretap Channel
May 3, 2010, 12:00am PDT
The authors study the Gaussian Multiple-Input Multiple-Output (MIMO) wiretap channel, which consists of a transmitter, a legitimate user, and an eavesdropper. In this channel, the transmitter...
Provided by University of Maryland
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White Papers
Multi-Receiver Wiretap Channel With Public and Confidential Messages
June 1, 2011, 12:00am PDT
The authors study the multi-receiver wiretap channel with public and confidential messages. In this channel, there is a transmitter that wishes to communicate with two legitimate users in the...
Provided by University of Maryland
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White Papers
Optimal Packet Scheduling in a Multiple Access Channel With Energy Harvesting Transmitters
June 1, 2011, 12:00am PDT
In this paper, the authors investigate the optimal packet scheduling problem in a two-user multiple access communication system, where the transmitters are able to harvest energy from the nature....
Provided by University of Maryland
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White Papers
Wiretap Channels: Implications of the More Capable Condition and Cyclic Shift Symmetry
October 18, 2011, 12:00am PDT
Characterization of the rate-equivocation region of a general wiretap channel involves two auxiliary random variables: U, for rate splitting and V, for channel prefixing. Evaluation of regions...
Provided by University of Maryland
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White Papers
A Cross-Layer View of Wireless Multicasting Under Uncertainty
April 13, 2009, 12:00am PDT
In this paper, the authors study the problem of scheduling through rate and power control for multi-cast traffic. Their objective is to maximize the total user utility where user utilities are...
Provided by University of Maryland
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White Papers
Cooperation Above the Physical Layer: The Case of a Simple Network
August 13, 2009, 12:00am PDT
In this paper, the authors investigate the effects of "Network-level" cooperation in a wireless three-node network with packet erasure links. Cooperation is achieved through the relaying of...
Provided by University of Maryland
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White Papers
Protocol-Level Cooperation in Wireless Networks: Stable Throughput and Delay Analysis
August 13, 2009, 12:00am PDT
The authors study the impact of user cooperation in wireless networks on improving the stable throughput and delay performance. Specifically, they consider a multi-access system in which a set of...
Provided by University of Maryland
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White Papers
Partitioning Detection and Connectivity Restoration Algorithm for Wireless Sensor Actor Networks
February 5, 2011, 12:00am PST
Recently, Wireless Sensor and Actor Networks have been receiving a growing attention from the research community because of their suitability for critical applications. Maintaining inter-actor...
Provided by University of Maryland
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White Papers
Making the Case for EAP Channel Bindings
February 20, 2009, 12:00am PST
In current networks that use EAP and AAA for authenticated admission control, such as WiFi, WiMAX, and various 3G internetworking protocols, a malicious base station can advertise false...
Provided by University of Maryland
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White Papers
Planning Approach to Dynamic Spectrum Access in Cognitive Radio Networks
January 1, 2011, 12:00am PST
Over the past few years, significant effort has been put into various treatments of dynamic spectrum access. This paper has resulted in a many protocols and heuristic techniques for coexistence...
Provided by University of Maryland
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White Papers
Channel Estimation and Adaptive M-QAM in Cognitive Radio Links
February 27, 2008, 12:00am PST
Cognitive radios have the ability to sense their RF environment and adapt their transmission parameters to perform optimally in any situation. Part of this involves selecting the best modulation...
Provided by University of Maryland
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White Papers
Security in Cognitive Radio Networks: Threats and Mitigation
January 1, 2011, 12:00am PST
This paper describes a new class of attacks specific to cognitive radio networks. Wireless devices that can learn from their environment can also be taught things by malicious elements of their...
Provided by University of Maryland
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White Papers
A Multi-Winner Cognitive Spectrum Auction Framework With Collusion-Resistant Mechanisms
June 6, 2008, 12:00am PDT
Dynamic spectrum access, enabled by cognitive radio technologies, has become a promising approach to improve efficiency in spectrum utilization, and the spectrum auction is one approach in which...
Provided by University of Maryland
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White Papers
Wireless Digital Modulation and Space-Time Coding Forensics Detector for Spectrum Sensing
July 11, 2008, 12:00am PDT
Modulation forensics detect the modulation type in wireless communications by the received signal only. It provides a powerful tool for spectrum sensing since by identifying the modulation type,...
Provided by University of Maryland
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White Papers
Collusion-Resistant Multi-Winner Spectrum Auction for Cognitive Radio Networks
March 28, 2008, 12:00am PDT
In order to fully utilize spectrum, auction-based dynamic spectrum allocation has become a promising approach which allows unlicensed wireless users to lease unused bands from spectrum license...
Provided by University of Maryland
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White Papers
Evolutionary Game Framework for Behavior Dynamics in Cooperative Spectrum Sensing
March 30, 2008, 12:00am PDT
Cooperative spectrum sensing has been shown to greatly improve the sensing performance in cognitive radio networks. However, if the cognitive users belong to different service providers, they tend...
Provided by University of Maryland
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