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North Carolina State University
(244 results)-
White Papers
Netset: Automating Network Performance Evaluation
May 22, 2009, 12:00am PDT
Performance measurement and comparison is integral to almost any kind of networking research. However, the authors currently lack a general framework under which network-based tests can be carried...
Provided by North Carolina State University
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White Papers
On the Levy-Walk Nature of Human Mobility
January 15, 2008, 12:00am PST
The authors report that human walks performed in outdoor settings of tens of kilometers resemble a truncated form of Levy walks commonly observed in animals such as monkeys, birds and jackals....
Provided by North Carolina State University
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White Papers
DTN Routing Strategies Using Optimal Search Patterns
May 11, 2008, 12:00am PDT
Biologists have long shown that the mobility patterns of many foraging animals and insects are similar to Levy walks and Levy walks are an optimal search strategy when target objects (i.e., food...
Provided by North Carolina State University
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White Papers
CUBIC: A New TCPFriendly High-speed TCP Variant
June 4, 2008, 12:00am PDT
CUBIC is a congestion control protocol for TCP (Transmission Control Protocol) and the current default TCP algorithm in Linux. The protocol modifies the linear window growth function of existing...
Provided by North Carolina State University
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White Papers
Experimental Evaluation of MAC Protocols for Fairness and QoS Support in Wireless Networks
August 1, 2008, 12:00am PDT
Existing wireless MACs are known to have fairness and QoS problems. In response, the wireless community has come up with numerous "Point solutions", with one-to-one comparison of their solution...
Provided by North Carolina State University
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White Papers
Cross-Layer Optimization Made Practical
July 13, 2007, 12:00am PDT
Limited resources and time-varying nature of wireless ad hoc networks demand optimized use of resources across layers. Cross-Layer Optimization (CLO) for wireless networks, an approach that...
Provided by North Carolina State University
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White Papers
On the Levy-Walk Nature of Human Mobility: Do Humans Walk Like Monkeys?
June 26, 2007, 12:00am PDT
The authors report that human walk patterns closely follow Levy walk patterns commonly observed in animals such as monkeys, birds and jackals. Their study is based on about one thousand hours of...
Provided by North Carolina State University
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White Papers
Rethinking Wireless MAC Architecture for Quality of Service Support - Design and Implementation
July 3, 2007, 12:00am PDT
Existing wireless MAC standards are known to have fairness problems. In this paper, the authors ask a more fundamental question: should fairness be a property of medium access, or in other words,...
Provided by North Carolina State University
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White Papers
A Step Toward Realistic Performance Evaluation of High-Speed TCP Variants
January 1, 2012, 12:00am PST
In this paper, the authors' work on designing realistic evaluation suites for testing high-speed TCP variants. They have created an experimental network model that captures some of the complex...
Provided by North Carolina State University
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White Papers
ExMin: A Routing Metric for True Opportunity Gain in Delay Tolerant Networks
January 12, 2011, 12:00am PST
DTNs have emerged as an attractive networking paradigm for mobile networks where transmission links among mobile nodes are dynamically established or torn down and communication is accomplished...
Provided by North Carolina State University
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White Papers
Inferring Method Specifications From Natural Language API Descriptions
March 30, 2012, 12:00am PDT
Application Programming Interface (API) documents are a typical way of describing legal usage of reusable software libraries, thus facilitating software reuse. However, even with such documents,...
Provided by North Carolina State University
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White Papers
Making Exceptions on Exception Handling
March 26, 2012, 12:00am PDT
The exception-handling mechanism has been widely adopted to deal with exception conditions that may arise during program executions. To produce high-quality programs, developers are expected to...
Provided by North Carolina State University
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White Papers
Isolating Failure-Inducing Combinations in Combinatorial Testing Using Test Augmentation and Classification
March 18, 2012, 12:00am PDT
Combinatorial Testing (CT) is a systematic way of sampling input parameters of the Software Under Test (SUT). A t-way combinatorial test set can exercise all behaviors of the SUT caused by...
Provided by North Carolina State University
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White Papers
Gossip-Based Information Spreading in Mobile Networks
March 15, 2012, 12:00am PDT
Mobile networks receive increasing research interest recently due to their increasingly wide applications in various areas; Mobile Ad hoc NETworks (MANET) and Vehicular Ad hoc NETworks (VANET) are...
Provided by North Carolina State University
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White Papers
On the Capacity Region for Cognitive Multiple Access Over White Space Channels
February 9, 2012, 12:00am PST
Cognitive Radio (CR) has stirred great interest with its potential to exploit the already scarce spectrum resource. The Cognitive Multiple Access Channels (CogMAC) are commonly seen in many...
Provided by North Carolina State University
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White Papers
Fundamental Limits of Passive Attacks on Wireless Link Signatures
January 1, 2012, 12:00am PST
The goal of this paper is to gain a fundamental understanding of the potential vulnerability of existing wireless link schemes subject to passive eavesdropping and inference. From the adversary's...
Provided by North Carolina State University
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White Papers
Cluster-Based Distributed Consensus
January 27, 2008, 12:00am PST
In this paper, the authors incorporate clustering techniques into distributed consensus algorithms for faster convergence and better energy efficiency. Together with a simple distributed...
Provided by North Carolina State University
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White Papers
Distributed Spectrum-Aware Clustering in Cognitive Radio Sensor Networks
August 1, 2011, 12:00am PDT
A novel Distributed Spectrum-Aware Clustering (DSAC) scheme is proposed in the context of Cognitive Radio Sensor Networks (CRSN). DSAC aims at forming energy efficient clusters in a self-organized...
Provided by North Carolina State University
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White Papers
Transmission Throughput of Decentralized Overlaid Networks With Outage Constraints
February 5, 2011, 12:00am PST
Overlaid networks, typically composed of primary and secondary networks, are emerging as a viable candidate to resolve the conflict between increasing demand for spectrum and spectrum shortage....
Provided by North Carolina State University
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White Papers
Defending DSSS-Based Broadcast Communication Against Insider Jammers Via Delayed Seed-Disclosure
June 22, 2010, 12:00am PDT
Spread spectrum techniques such as Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping (FH) have been commonly used for anti-jamming wireless communication. However, traditional spread...
Provided by North Carolina State University
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White Papers
USD-FH: Jamming-Resistant Wireless Communication Using Frequency Hopping With Uncoordinated Seed Disclosure
April 5, 2010, 12:00am PDT
Spread spectrum techniques (e.g., Frequency Hopping (FH), Direct Sequence Spread Spectrum (DSSS)) have been widely used for anti-jamming wireless communications. Such techniques require that...
Provided by North Carolina State University
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White Papers
Transport Capacity and Connectivity of Cognitive Radio Networks With Outage Constraint
April 20, 2010, 12:00am PDT
In this paper, the authors study two basic properties, capacity and connectivity, of Cognitive Radio networks. Their goal is to quantitatively characterize the relationship and tradeoff among key...
Provided by North Carolina State University
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White Papers
Authenticating Primary Users' Signals in Cognitive Radio Networks Via Integrated Cryptographic and Wireless Link Signatures
April 13, 2010, 12:00am PDT
To address the increasing demand for wireless bandwidth, Cognitive Radio Networks (CRNs) have been proposed to increase the efficiency of channel utilization; they enable the sharing of channels...
Provided by North Carolina State University
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White Papers
Distributed Network Decomposition: A Probabilistic Greedy Approach
January 9, 2010, 12:00am PST
In this paper, the authors propose a novel distributed network decomposition algorithm with the aid of the factor graph model and the max-product algorithm, which aims to achieve minimum cut...
Provided by North Carolina State University
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White Papers
Towards Efficient Designs for In-Network Computing With Noisy Wireless Channels
August 1, 2009, 12:00am PDT
In this paper, the authors study distributed function computation in a noisy multi-hop wireless network, in which n nodes are uniformly and independently distributed in a unit square. Each node...
Provided by North Carolina State University
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White Papers
Randomized Differential DSSS: Jamming-Resistant Wireless Broadcast Communication
June 4, 2009, 12:00am PDT
Jamming resistance is crucial for applications where reliable wireless communication is required. Spread spectrum techniques such as Frequency Hopping Spread Spectrum (FHSS) and Direct Sequence...
Provided by North Carolina State University
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White Papers
Structured Variational Methods for Distributed Inference: Convergence Analysis and Performance-Complexity Tradeoff
April 30, 2009, 12:00am PDT
In this paper, the asymptotic performance of a recently proposed distributed inference framework, structured variational methods, is investigated. The authors first distinguish the intra- and...
Provided by North Carolina State University
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White Papers
Adaptive Quickest Change Detection With Unknown Parameter
January 19, 2009, 12:00am PST
Quickest detection of an abrupt distribution change with an unknown time varying parameter is considered. A novel adaptive approach is proposed to tackle this problem, which is shown to outperform...
Provided by North Carolina State University
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White Papers
Structured Variational Methods for Distributed Inference in Wireless Ad Hoc and Sensor Networks
January 19, 2009, 12:00am PST
In this paper, a variational message passing framework is proposed for Markov random fields, which is computationally more efficient and admits wider applicability compared to the belief...
Provided by North Carolina State University
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White Papers
Continuous-Model Communication Complexity With Application in Distributed Resource Allocation in Wireless Ad Hoc Networks
August 18, 2008, 12:00am PDT
Distributed resource allocation is an important problem in wireless ad hoc networks, in which there is no centralized scheduler and the resource allocation is carried out in a distributed way....
Provided by North Carolina State University
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White Papers
Collaborative Quickest Detection in Adhoc Networks With Delay Constraint - Part I: Two-Node Network
December 31, 2007, 12:00am PST
Collaborative quickest detection is used to detect a certain distribution change in an adhoc network, in which there is no data fusion center and local decisions need to be made at all nodes. In...
Provided by North Carolina State University
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White Papers
Quickest Spectrum Sensing in Cognitive Radio
January 1, 2008, 12:00am PST
Quickest detection is applied to frequency spectrum sensing in cognitive radio systems. Distribution change in frequency domain is detected for vacating secondary radio networks from licensed...
Provided by North Carolina State University
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White Papers
LADA Algorithms: Performance Lower Bound and Cluster-Based Variant
September 26, 2007, 12:00am PDT
The observation that certain non-reversible chains lifted from reversible ones mix substantially faster than the original chains, has motivated the authors' recent work, where a Location-Aided...
Provided by North Carolina State University
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White Papers
Location-Aided Fast Distributed Averaging
July 6, 2007, 12:00am PDT
Existing works on distributed averaging explore linear iterations based on reversible Markov chains, and hence, the convergence is bounded to be slow due to the diffusive behavior of the...
Provided by North Carolina State University
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Whitepapers
BitTrickle: Defending Against Broadband and High-Power Reactive Jamming Attacks
January 10, 2012, 12:00am PST
Reactive jamming is not only cost effective, but also hard to track and remove due to its intermittent jamming behaviors. Frequency Hopping Spread Spectrum (FHSS) and Direct Sequence Spread...
Provided by North Carolina State University
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Whitepapers
Enhanced Wireless Channel Authentication Using Time-Synched Link Signature
January 10, 2012, 12:00am PST
Wireless link signature is a physical layer authentication mechanism, which uses the unique wireless channel characteristics between a transmitter and a receiver to provide authentication of...
Provided by North Carolina State University
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Whitepapers
Efficient, Compromise Resilient and Append-Only Cryptographic Schemes for Secure Audit Logging
January 10, 2012, 12:00am PST
Due to the forensic value of audit logs, it is vital to provide compromise resiliency and append-only properties in a logging system to prevent active attackers. Unfortunately, existing symmetric...
Provided by North Carolina State University
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Whitepapers
Remote Attestation to Dynamic System Properties: Towards Providing Complete System Integrity Evidence
April 8, 2009, 12:00am PDT
Remote attestation of system integrity is an essential part of trusted computing. However, current remote attestation techniques only provide integrity proofs of static properties of the system....
Provided by North Carolina State University
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Whitepapers
Beyond Random Walk and Metropolis-Hastings Samplers: Why You Should Not Backtrack for Unbiased Graph Sampling
April 18, 2012, 12:00am PDT
Graph sampling via crawling has been actively considered as a generic and important tool for collecting uniform node samples so as to consistently estimate and uncover various characteristics of...
Provided by North Carolina State University
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Whitepapers
Distributed I/O With ParaMEDIC: Experiences With a Worldwide Supercomputer
May 26, 2008, 12:00am PDT
Achieving high performance for distributed I/O on a wide-area network continues to be an elusive holy grail. Despite enhancements in network hardware as well as software stacks, achieving...
Provided by North Carolina State University
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White Papers
From Quality to Utility: Adaptive Service Selection Framework
August 24, 2010, 12:00am PDT
The authors consider an approach to service selection wherein service consumers choose services with desired nonfunctional properties to maximize their utility. A consumer's utility from using a...
Provided by North Carolina State University
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White Papers
An Architecture for Multiagent Systems: An Approach Based on Commitments
August 15, 2009, 12:00am PDT
Existing architectures for multiagent systems emphasize low-level messaging-related considerations. As a result, the programming abstractions they provide are also low level. In recent years,...
Provided by North Carolina State University
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White Papers
Business Modeling Via Commitments
July 23, 2009, 12:00am PDT
Existing computer science approaches to business modeling offer low-level abstractions such as data and control flows, which fail to capture the business intent underlying the interactions that...
Provided by North Carolina State University
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White Papers
Automating Spoken Dialogue Systems
March 13, 2008, 12:00am PDT
Spoken dialogue interfaces apply in a number of applications. Engaging in meaningful conversation presupposes the ability to recognize and generate different conversational moves, and to...
Provided by North Carolina State University
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White Papers
Correctness Properties for Multiagent Systems
July 20, 2009, 12:00am PDT
What distinguishes multiagent systems from other software systems is their emphasis on the interactions among autonomous, heterogeneous agents. This paper motivates and characterizes correctness...
Provided by North Carolina State University
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White Papers
Trustworthy Service Caching: Cooperative Search in P2P Information Systems
January 1, 2011, 12:00am PST
The authors are developing an approach for P2P information systems, where the peers are modeled as autonomous agents. Agents provide services or give referrals to one another to help find...
Provided by North Carolina State University
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White Papers
Protocol Refinement: Formalization and Verification
March 15, 2010, 12:00am PDT
A proper definition of protocols and protocol refinement is crucial to designing multiagent systems. Rigidly defined protocols can require significant rework for even minor changes. Loosely...
Provided by North Carolina State University
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White Papers
Methodology for Engineering Affective Social Applications
September 25, 2009, 12:00am PDT
Affective applications are becoming increasingly mainstream in entertainment and education. Yet, current techniques for building such applications are limited, and the maintenance and use of...
Provided by North Carolina State University
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White Papers
ChipViz: Visualizing Memory Chip Test Data
January 7, 2008, 12:00am PST
This paper presents a technique that allows test engineers to visually analyze and explore within memory chip test data. The authors represent the test results from a generation of chips along a...
Provided by North Carolina State University
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White Papers
Visualizing Multidimensional Query Results Using Animation
January 7, 2008, 12:00am PST
Effective representation of large, complex collections of information (Datasets) presents a difficult challenge. Visualization is a solution that uses a visual interface to support efficient...
Provided by North Carolina State University
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White Papers
Applying the Mu-Calculus in Planning and Reasoning About Action
April 9, 2008, 12:00am PDT
Planning algorithms have traditionally been geared toward achievement goals in single-agent environments. Such algorithms essentially produce plans to reach one of a specified set of states. More...
Provided by North Carolina State University
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White Papers
Toward Predictive Failure Management for Distributed Stream Processing Systems
March 16, 2008, 12:00am PDT
Distributed Stream Processing Systems (DSPSs) have many important applications such as sensor data analysis, network security, and business intelligence. Failure management is essential for DSPSs...
Provided by North Carolina State University
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White Papers
Defeating Dynamic Data Kernel Rootkit Attacks Via VMM-Based Guest-Transparent Monitoring
December 20, 2008, 12:00am PST
Targeting the operating system kernel, the core of trust in a system, kernel rootkits are able to compromise the entire system, placing it under malicious control, while eluding detection efforts....
Provided by North Carolina State University
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White Papers
DKSM: Subverting Virtual Machine Introspection for Fun and Profit
August 12, 2010, 12:00am PDT
Virtual Machine (VM) introspection is a powerful technique for determining the specific aspects of guest VM execution from outside the VM. Unfortunately, existing introspection solutions share a...
Provided by North Carolina State University
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White Papers
Kernel Malware Analysis With Un-Tampered and Temporal Views of Dynamic Kernel Memory
June 20, 2010, 12:00am PDT
Dynamic kernel memory has been a popular target of recent kernel malware due to the difficulty of determining the status of volatile dynamic kernel objects. Some existing approaches use kernel...
Provided by North Carolina State University
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White Papers
PRESS: PRedictive Elastic ReSource Scaling for Cloud Systems
January 4, 2011, 12:00am PST
Cloud systems require elastic resource allocation to minimize resource provisioning costs while meeting Service Level Objectives (SLOs). In this paper, the authors present a novel PRedictive...
Provided by North Carolina State University
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White Papers
A Value-Based Energy Manager for Wireless Sensor Networks
March 3, 2010, 12:00am PST
Recent research in Wireless Sensor Networks (WSNs) focuses on the definition of a re-useable software module to encapsulate energy management concerns. One such paper defines an Energy Management...
Provided by North Carolina State University
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White Papers
Towards Feasibility and Scalability of Text Search in Peer-to-Peer Systems
November 10, 2007, 12:00am PST
This paper introduces a search engine, Dgoogle, designed for large scale P2P systems. Dgoogle is purely text-based, does not organize documents based on pre-defined keywords or based on their...
Provided by North Carolina State University
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White Papers
Using Focus Groups In Preliminary Instrument Development: Expected And Unexpected Lessons Learned
July 29, 2010, 12:00am PDT
Focus groups can be utilized effectively across various stages of instrument development. This paper details selected aspects of a process in which they were employed at the initial stages of item...
Provided by North Carolina State University
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White Papers
Cloud Computing - Issues, Research and Implementations
December 23, 2008, 12:00am PST
Cloud computing - a relatively recent term, builds on decades of research in virtualization, distributed computing, utility computing, and more recently networking, web and software services. It...
Provided by North Carolina State University
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White Papers
Transparent Protection of Commodity OS Kernels Using Hardware Virtualization
June 21, 2010, 12:00am PDT
Kernel rootkits are among the most insidious threats to computer security today. By employing various code injection techniques, they are able to maintain an omnipotent presence in the compromised...
Provided by North Carolina State University
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White Papers
Secure and DoS-Resistant Code Dissemination in Wireless Sensor Networks Using Seluge (Demo Abstract)
February 18, 2008, 12:00am PST
A wireless sensor network is expected to consist of a potentially large number of low-cost, low-power, and multifunctional sensor nodes that communicate over short distances through wireless...
Provided by North Carolina State University
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White Papers
Hybrid Slow Start for High-Bandwidth and Long-Distance Networks
February 29, 2008, 12:00am PST
Slow Start is a technique to probe for unknown and time-varying available bandwidth of a network path. A sender increases its congestion window by one for each ACK received when ACKs are not...
Provided by North Carolina State University
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White Papers
Aggregation Network Design Methodologies for Triple Play Services
November 20, 2009, 12:00am PST
Triple-play services and P2P IPTV have not only led to an increasing demand for bandwidth in broadband access networks, but also to the need for new service delivery architectures. The choice of...
Provided by North Carolina State University
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White Papers
Routing and Wavelength Assignment in Optical WDM Networks
January 1, 2010, 12:00am PST
A basic property of single mode optical fiber is its enormous low-loss bandwidth of several tens of Terahertz. However, due to dispersive effects and limitations in optical device technology,...
Provided by North Carolina State University
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White Papers
Data Quality Management, Data Cleansing, and Discrepancy Reporting
December 2, 2008, 12:00am PST
Whether ones data comes in the form of SAS datasets or in another form, Data Quality Management and Data Cleansing are a must. With Data Cleansing comes Discrepancy reporting. This paper covers...
Provided by North Carolina State University
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White Papers
IT Infrastructure Problems for Asset Management
August 9, 2007, 12:00am PDT
This paper seeks to address Information Technology (IT) problems that emerge when developing an overall asset management system for high volume assets and to identify their unique characteristics....
Provided by North Carolina State University
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White Papers
Enabling Persistent Web Services Via Commitments
January 1, 2010, 12:00am PST
Web services are gaining popularity for supporting reusable business, process across distributed and heterogeneous environments. Current Web services are understood as taking inputs, executing...
Provided by North Carolina State University
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White Papers
The FREEDM Architecture of Fault Tolerant Network Routing through Software Overlays
April 29, 2009, 12:00am PDT
Control decisions of intelligent devices in critical infrastructure can have a significant impact on human life and the environment. Insuring that the appropriate data is available is crucial in...
Provided by North Carolina State University
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White Papers
A Performance Study of an Optical Burst Switched Network With Dynamic Simultaneous Link Possesion
January 1, 2010, 12:00am PST
In Optical Burst Switched (OBS) networks a burst may occupy a wavelength on one or more links as it travels through the network. In the literature, OBS networks have been analyzed assuming that...
Provided by North Carolina State University
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White Papers
SAS for Green Energy Solutions in Smart Electric Grid Systems
April 6, 2010, 12:00am PDT
This research paper proposes a data-analytic approach for making optimum utilization of solar energy generated by solar photovoltaic panels to reduce peak demand on advanced electric grid systems....
Provided by North Carolina State University
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White Papers
Teaching and Learning Mathematics With Interactive Spreadsheets
January 1, 2010, 12:00am PST
Learning to teach mathematics at the middle and secondary levels should include many opportunities for teachers to learn how to use technology o better understand mathematics themselves and...
Provided by North Carolina State University
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White Papers
Ideas and Examples in Generalized Linear Mixed Models
March 19, 2010, 12:00am PDT
This paper discusses generalized mixed models. The word "Mixed" refers to models with random effects. The word "Generalized" refers to nonnormal distributions for the response variable. Two of the...
Provided by North Carolina State University
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White Papers
Recreating an Excel-Based Report With SAS and ODS
December 2, 2008, 12:00am PST
One of the best features of Excel is the ease with which a paper-based report can be compiled to include data tables and charts on the same page, all with easily controlled fonts, colors and...
Provided by North Carolina State University
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White Papers
Modeling System Calls for Intrusion Detection With Dynamic Window Sizes
January 1, 2009, 12:00am PST
It extends prior research on system call anomaly detection modeling methods for intrusion detection by incorporating dynamic window sizes. The window size is the length of the subsequence of a...
Provided by North Carolina State University
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White Papers
The Role of Internet Service Providers in Cyber Security
June 1, 2009, 12:00am PDT
The current level of insecurity of the Internet is a worldwide problem that has resulted in a multitude of costs for businesses, governments, and individuals. Past research (e.g., Frith, 2005;...
Provided by North Carolina State University
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White Papers
Authenticated Data Compression in Delay Tolerant Wireless Sensor Networks
June 22, 2009, 12:00am PDT
Delay Tolerant Wireless Sensor Networks (DTWSNs) are sensor networks where continuous connectivity between the sensor nodes and their final destinations (e.g., the base station) cannot be...
Provided by North Carolina State University
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White Papers
Service Performance and Analysis in Cloud Computing
February 14, 2009, 12:00am PST
Cloud computing is a new cost-efficient computing paradigm in which information and computer power can be accessed from a Web browser by customers. Understanding the characteristics of computer...
Provided by North Carolina State University
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White Papers
SigLM: Signature-Driven Load Management for Cloud Computing Infrastructures
September 4, 2009, 12:00am PDT
Cloud computing has emerged as a promising platform that grants users with direct yet shared access to computing resources and services without worrying about the internal complex infrastructure....
Provided by North Carolina State University
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White Papers
Protection Poker: Structuring Software Security Risk Assessment and Knowledge Transfer
September 21, 2008, 12:00am PDT
Discovery of security vulnerabilities is on the rise. As a result, software development teams must place a higher priority on preventing the injection of vulnerabilities in software as it is...
Provided by North Carolina State University
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