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George Mason University
(138 results)-
White Papers
Advanced Vulnerability Analysis and Intrusion Detection Through Predictive Attack Graphs
May 19, 2009, 12:00am PDT
Network security tools generally lack sufficient context for maintaining a well informed and proactive defense posture. Vulnerabilities are usually assessed in isolation, without considering how...
Provided by George Mason University
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White Papers
Simulation-Based Command and Control Applications in a Service-Oriented, Cloud Computing Environment
May 19, 2009, 12:00am PDT
Modeling and Simulation (M&S) technologies have matured suitably to provide real time tactical utility to warfighting Command and Control (C2) computer system users, but C2 systems adoption of M&S...
Provided by George Mason University
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White Papers
Dartmouth Internet Security Testbed (DIST): Building a Campus-Wide Wireless Testbed
July 15, 2009, 12:00am PDT
This paper describes the experiences in deploying a campus-wide wireless security testbed. The testbed gives one the capability to monitor security-related aspects of the 802.11 MAC layer in over...
Provided by George Mason University
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White Papers
Spam Detection Using Clustering, Random Forests, and Active Learning
July 17, 2009, 12:00am PDT
This paper describes work in progress. The research is focused on efficient construction of effective models for spam detection. Clustering messages allows for efficient labeling of a...
Provided by George Mason University
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White Papers
Delay-Coordinates Embeddings as a Data Mining Tool for Denoising Speech Signals
February 2, 2008, 12:00am PST
This paper utilizes techniques from the theory of non-linear dynamical systems to define a notion of embedding threshold estimators. More specifically it uses delay-coordinates embeddings of sets...
Provided by George Mason University
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White Papers
The Heisenberg Measuring Uncertainty in Lightweight Virtualization Testbeds
July 18, 2009, 12:00am PDT
The need for large-scale experimentation testbeds involving several hundred, or even thousands, of nodes is undeniable. Testbeds including Emulab, and Deter are heavily used for both research and...
Provided by George Mason University
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White Papers
Visualization of Earth Science Data Using Google Earth
October 12, 2009, 12:00am PDT
With Google Earth being widely used by the general public and professionals, Virtual Globes are revolutionizing the way in which scientists conduct their research and the general public uses...
Provided by George Mason University
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White Papers
BotTracer: Execution-Based Bot-Like Malware Detection
June 14, 2008, 12:00am PDT
Bot-like malware has posed an immense threat to computer security. Bot detection is still a challenging task since bot developers are continuously adopting advanced techniques to make bots more...
Provided by George Mason University
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White Papers
Universal Multi-Factor Authentication Using Graphical Passwords
May 9, 2010, 12:00am PDT
With AO, companies are able to turn into a more industrialized model in a centralized low-cost country for the service. With this, funds can be released easily and they therefore help pay for...
Provided by George Mason University
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White Papers
Understanding Cloud Computing: Experimentation and Capacity Planning
September 12, 2009, 12:00am PDT
Cloud computing is a relatively new concept but has its roots in many not-so-new technologies. It is a modality of computing characterized by on demand availability of resources in a dynamic and...
Provided by George Mason University
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White Papers
Bank Fragility, "Money Under the Mattress," And Long-Run Growth U.S. Evidence From The "Perfect" Panic Of 1893
May 1, 2008, 12:00am PDT
An issue that has received an increasing amount of attention has been the effect of financial sector conditions (and of banking in particular) on long-run economic growth. In this paper, the...
Provided by George Mason University
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White Papers
A2M: Access-Assured Mobile Desktop Computing
July 8, 2009, 12:00am PDT
Continued improvements in network bandwidth, cost, and ubiquitous access are enabling service providers to host desktop computing environments to address the complexity, cost, and mobility...
Provided by George Mason University
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White Papers
Security Policy Cognizant Module Composition
February 6, 2010, 12:00am PST
Component-based software development and deployment is based on developing individual software modules that are composed on an as needed basis. Such modules expose the computations they provide...
Provided by George Mason University
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Whitepapers
Resilient Traffic Engineering in a Transit-Edge Separated Internet Routing
February 11, 2011, 12:00am PST
The significant growth of Internet traffic and increase of routing tables require solutions to address Internet scalability and resiliency. A possible direction is to move away from the flat...
Provided by George Mason University
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White Papers
Model-Based System Development for Managing the Evolution of a Common Submarine Combat System
May 19, 2010, 12:00am PDT
Managing the evolution of a complex product family that is deployed and maintained in multiple variants on various platforms using traditional systems engineering tools and processes is a...
Provided by George Mason University
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Whitepapers
Throughput Limits in Spectrum Sensing Cognitive Radio Networks Using Point Processes
March 7, 2012, 12:00am PST
Spectrum sensing in cognitive wireless networks is important for Secondary nodes to avoid interference with the Primaries. In this paper, considering a spectrum sensing framework, the authors...
Provided by George Mason University
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White Papers
Cloud Computing: Impacting Our World
March 7, 2009, 12:00am PST
Cloud computing is distributed computer processing over a large network. The Internet is the largest cloud, and it is often drawn on network diagrams as a cloud. Cloud computing impacts the world...
Provided by George Mason University
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White Papers
Performance of an Adaptive Routing Overlay Under Dynamic Link Impairments
July 13, 2007, 12:00am PDT
Authors propose an adaptive software routing overlay to improve the performance of TCP/IP-based internets over links with dynamic impairments. The routing overlay adaptively distributes traffic...
Provided by George Mason University
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White Papers
An Integrated Multi-Task Inductive Database and Decision Support System VINLEN: An Initial Implementation and First Results
January 1, 2010, 12:00am PST
A brief review of the current research on VINLEN multitask inductive database and decision support system is presented. VINLEN integrates a wide range of knowledge generation operators that given...
Provided by George Mason University
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White Papers
Enhancing Security and Usability for Bluetooth Discovery and Pairing
January 1, 2008, 12:00am PST
This paper describes the current Bluetooth landscape, describing what Bluetooth is and does, as well as listing the security issues associated with it. Additionally, this paper attempts to address...
Provided by George Mason University
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White Papers
Vulnerability Analysis and Management of an Internet Firewall
April 23, 2007, 12:00am PDT
Firewalls protect a trusted network from an untrusted network by filtering traffic according to a specified security policy. A diverse set of firewalls is being used today based on the security...
Provided by George Mason University
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White Papers
Analysis of Virus Spread in Wireless Sensor Networks: An Epidemic Model
August 24, 2009, 12:00am PDT
The authors of this paper study the potential threat for virus spread in Wireless Sensor Networks (WSNs). Using epidemic theory, the authors proposed a new model, called...
Provided by George Mason University
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White Papers
Analysis of Wireless Network Security Protocols
December 1, 2007, 12:00am PST
Wireless networks have become extremely widespread. However, providing security for these networks has proven to be a challenge due to the problems inherent with the way information is...
Provided by George Mason University
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White Papers
Providing Mobile Users' Anonymity in Hybrid Network
July 3, 2010, 12:00am PDT
The authors present a novel hybrid communication protocol that guarantees mobile users' k-anonymity against a wide-range of adversaries by exploiting the capability of handheld devices to connect...
Provided by George Mason University
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White Papers
SMP Virtualization Performance Evaluation
April 12, 2009, 12:00am PDT
Virtualization is a technology used to partition the resources of a physical computer into Virtual Machines (VMs). This is often done with the intent of increasing the utilization of a physical...
Provided by George Mason University
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White Papers
A Virtualization Architecture for In-Depth Kernel Isolation
September 11, 2009, 12:00am PDT
Recent advances in virtualization technologies have sparked a renewed interest in the use of kernel and process virtualization as a security mechanism to enforce resource isolation and management....
Provided by George Mason University
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White Papers
HyperCheck: A Hardware-Assisted Integrity Monitor
July 3, 2010, 12:00am PDT
Over the past few years, virtualization has been employed to environments ranging from densely populated cloud computing clusters to home desktop computers. Security researchers embraced Virtual...
Provided by George Mason University
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White Papers
Dynamic Cloud Management System for Monitoring and Managing Services
July 20, 2010, 12:00am PDT
As cloud computing becomes more widely adopted, the size of cloud systems will necessarily become larger. In recent years, large companies, such as Google and Amazon, have become reliant on...
Provided by George Mason University
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White Papers
GeoInformation Computing & Cyberinfrastructure
January 22, 2010, 12:00am PST
Geographic information processing is expanding in several dimensions in the past decades: 1) Earth observation, ground sensing, and other data collection techniques accelerated exponentially the...
Provided by George Mason University
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White Papers
Turned Off Or Turned Out? Campaign Advertising, Information, And Voting
January 10, 2008, 12:00am PST
The author presents the results from laboratory experimental elections in which candidates can choose to provide informative advertisements and voting is voluntary. They also compare...
Provided by George Mason University
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White Papers
Energy Management for Time-Critical Energy Harvesting Wireless Sensor Networks
August 1, 2010, 12:00am PDT
As Cyber-Physical Systems (CPSs) evolve they will be increasingly relied to support time-critical monitoring and control activities. Further, many CPSs that utilizing Wireless Sensor Networking...
Provided by George Mason University
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White Papers
Detection of Communities and Bridges in Weighted Networks
October 21, 2010, 12:00am PDT
Traditional graph-based clustering methods group vertices into discrete non-intersecting clusters under the assumption that each vertex can belong to only a single cluster. On the other hand,...
Provided by George Mason University
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White Papers
Ruminate: A Scalable Architecture for Deep Network Analysis
December 13, 2010, 12:00am PST
Traditionally, Network Intrusion Detection Systems (NIDS) inspect packet header and payload data for malicious content. While each system is different, most NIDS perform limited analysis on...
Provided by George Mason University
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White Papers
Scheduling Weighted Packets With Deadlines Over a Fading Channel
January 29, 2009, 12:00am PST
This paper considers scheduling weighted packets with time constraints over a fading channel. Packets arrive at the transmitter in an online manner. Each packet has a value and a hard deadline by...
Provided by George Mason University
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White Papers
Query Consolidation: Interpreting a Set of Independent Queries Using a Multidatabase Architecture in the Reverse Direction
November 30, 2007, 12:00am PST
This paper introduces the problem of query consolidation, which seeks to interpret a set of disparate queries submitted to independent databases with a single "Global" query. This problem has...
Provided by George Mason University
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White Papers
Towards a VMM-Based Usage Control Framework for OS Kernel Integrity Protection
June 22, 2007, 12:00am PDT
Protecting kernel integrity is one of the fundamental security objectives in building a trustworthy Operating System (OS). For this end, a variety of approaches and systems have been proposed and...
Provided by George Mason University
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White Papers
How to Implement National Information Sharing Strategy: Detailed Elements of the Evolutionary Management Approach Required
May 7, 2008, 12:00am PDT
Data sharing is today's principal Information Technology challenge. All sectors - commercial, government, academic, and military - seek improved information exchange to achieve operational...
Provided by George Mason University
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White Papers
RandSys: Thwarting Code Injection Attacks With System Service Interface Randomization
January 1, 2011, 12:00am PST
Code injection attacks are a top threat to today's Internet. With zero-day attacks on the rise, randomization techniques have been introduced to diversify software and operation systems of...
Provided by George Mason University
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White Papers
High Level Fusion and Predictive Situational Awareness With Probabilistic Ontologies
January 26, 2010, 12:00am PST
The change of focus in modern warfare from individual platforms to the network has caused a concomitant shift in supporting concepts and technologies. Greater emphasis is placed on...
Provided by George Mason University
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White Papers
Building an On-Line Geospatial Analysis System With AJAX and Web Services
April 24, 2009, 12:00am PDT
Service Oriented Architecture (SOA), Web Services, Asynchronous JavaScript And XML (AJAX), and other new Web technologies have revolutionized the use of geospatial Web applications. The GeoBrain...
Provided by George Mason University
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Whitepapers
Out-of-the-Box Monitoring of VM-Based High-Interaction Honeypots
January 1, 2013, 12:00am PST
Honeypot has been an invaluable tool for the detection and analysis of network-based attacks by either human intruders or automated malware in the wild. The insights obtained by deploying...
Provided by George Mason University
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Whitepapers
Billing Attacks on SIP-Based VoIP Systems
January 1, 2013, 12:00am PST
Billing is fundamental to any commercial VoIP services and it has direct impact on each individual VoIP subscriber. One of the most basic requirements of any VoIP billing function is that it must...
Provided by George Mason University
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Whitepapers
An Empirical Investigation Into the Security of Phone Features in SIP-Based VoIP Systems
December 19, 2009, 12:00am PST
Phone features, e.g., 911 call, voicemail, and Do Not Disturb, are critical and necessary for all deployed VoIP systems. In this paper, the authors empirically investigate the security of these...
Provided by George Mason University
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Whitepapers
Functional Crowds
April 29, 2010, 12:00am PDT
Most crowd simulation research either focuses on navigating characters through an environment while avoiding collisions or on simulating very large crowds. The authors' work focuses on creating...
Provided by George Mason University
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Whitepapers
Constraints-Based Complex Behavior in Rich Environments
July 4, 2010, 12:00am PDT
In order to create a system capable of planning complex, constraints-based behaviors for an agent operating in a rich environment, two complementary frameworks were integrated. Linear Temporal...
Provided by George Mason University
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Whitepapers
CAROSA: A Tool for Authoring NPCs
August 26, 2010, 12:00am PDT
Certainly Non-Player Characters (NPCs) can add richness to a game environment. A world without people (or at least humanoids) seems barren and artificial. People are often a major part of the...
Provided by George Mason University
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Whitepapers
Populations with Purpose
August 23, 2011, 12:00am PDT
There are currently a number of animation researchers that focus on simulating virtual crowds, but few are attempting to simulate virtual populations. Virtual crowd simulations tend to depict a...
Provided by George Mason University
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Whitepapers
Crowd Distribution and Location Preference
March 5, 2012, 12:00am PST
Most crowd simulators focus on navigation and agents flow. In this paper, the authors present another perspective which concentrates on the overall distribution of virtual agents and uses...
Provided by George Mason University
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Whitepapers
The Virtual Apprentice
June 14, 2012, 12:00am PDT
Over the past couple of decades, virtual humans have been attracting more and more attention. Many applications including, video games, movies, and various training and tutoring systems have...
Provided by George Mason University
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Whitepapers
Comprehensive Evaluation of High-Speed and Medium-Speed Implementations of Five SHA-3 Finalists Using Xilinx and Altera FPGAs
October 31, 2012, 12:00am PDT
In this paper, the authors present a comprehensive comparison of all Round 3 SHA-3 candidates and the current standard SHA-2 from the point of view of hardware performance in modern FPGAs. Each...
Provided by George Mason University
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Whitepapers
Security Margin Evaluation of SHA-3 Contest Finalists Through SAT-Based Attacks (Extension)
July 26, 2012, 12:00am PDT
In 2007, the U.S. National Institute of Standards and Technology (NIST) announced a public contest aiming at the selection of a new standard for a cryptographic hash function. In this paper, the...
Provided by George Mason University
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Whitepapers
Concurrent Object-Oriented Development with Behavioral Design Patterns
December 21, 2012, 12:00am PST
The development of concurrent applications is challenging because of the complexity of concurrent designs and the hazards of concurrent programming. Architectural modeling using the Unified...
Provided by George Mason University
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Whitepapers
Throughput Limits in Spectrum Sensing Cognitive Radio Networks Using Point Processes
March 7, 2012, 12:00am PST
Spectrum sensing in cognitive wireless networks is important for Secondary nodes to avoid interference with the Primaries. In this paper, considering a spectrum sensing framework, the authors...
Provided by George Mason University
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Whitepapers
Resilient Traffic Engineering in a Transit-Edge Separated Internet Routing
February 11, 2011, 12:00am PST
The significant growth of Internet traffic and increase of routing tables require solutions to address Internet scalability and resiliency. A possible direction is to move away from the flat...
Provided by George Mason University
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Whitepapers
NSDMiner: Automated Discovery of Network Service Dependencies
January 11, 2012, 12:00am PST
Enterprise networks today host a wide variety of network services, which often depend on each other to provide and support network-based services and applications. Understanding such dependencies...
Provided by George Mason University
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White Papers
Groestl Tweaks and Their Effect on FPGA Results
November 25, 2011, 12:00am PST
The authors have performed the first order analysis of the influence of the Round 3 tweaks in Groestl on the performance of this algorithm in FPGAs. Both Groestl-0 and the revised Groestl have...
Provided by George Mason University
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White Papers
Assessing Home Internet Users' Demand for Security: Will They Pay ISPs?
June 16, 2011, 12:00am PDT
One strategy for improving cyber security would be for Internet Service Providers (ISPs) to take a more active role in curtailing criminal behavior over the Internet. However, few ISPs today are...
Provided by George Mason University
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White Papers
Transmission Probability Control Game for Coexisting Random ALOHA Wireless Networks in Unlicensed Bands
June 23, 2010, 12:00am PDT
In this paper, the authors consider N ad hoc networks, with nodes randomly and uniformly distributed, coexisting and sharing an unlicensed band. The objective of this paper is the optimization of...
Provided by George Mason University
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White Papers
An Exact Solution for Outage Probability in Cellular Networks
August 24, 2007, 12:00am PDT
The authors apply a discrete-time method to derive an exact solution for the outage probability in a cellular network as the mobile moves along a given trajectory, employing a hysteresis-based...
Provided by George Mason University
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White Papers
Performance Analysis of a Wireless Network With Opportunistic Spectrum Sharing
March 23, 2008, 12:00am PDT
The authors analyze the performance of a wireless system that allows opportunistic spectrum sharing. The system consists of a set of primary users sharing a set of channels over a coverage area....
Provided by George Mason University
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White Papers
Modeling an Opportunistic Spectrum Sharing System With a Correlated Arrival Process
January 7, 2008, 12:00am PST
In an Opportunistic Spectrum Sharing (OSS) wireless network there are two types of users: primary users and secondary users. The primary users own the license for the system bandwidth, while the...
Provided by George Mason University
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White Papers
An Analytical Performance Model of Opportunistic Spectrum Access in a Military Environment
January 10, 2008, 12:00am PST
In an opportunistic spectrum sharing system, secondary users equipped with cognitive radios opportunistically access spectrum that is not being used by the primary users, i.e., the licensed...
Provided by George Mason University
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White Papers
Estimation of Interference-Free Transmit Power for Opportunistic Spectrum Access
January 6, 2008, 12:00am PST
The authors consider a scenario in which frequency agile radios opportunistically share a fixed spectrum resource with a set of primary nodes. They develop a collaborative scheme for frequency...
Provided by George Mason University
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White Papers
An Adaptive Spectrum Detection Mechanism for Cognitive Radio Networks in Dynamic Traffic Environments
August 12, 2008, 12:00am PDT
The authors propose an adaptive spectrum detection mechanism for cognitive radios in a dynamic traffic environment. Cognitive radios generate secondary calls, which opportunistically make use of...
Provided by George Mason University
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White Papers
Collaborative Opportunistic Spectrum Access in the Presence of Multiple Transmitters
September 23, 2008, 12:00am PDT
The authors present a collaborative algorithm to enable opportunistic spectrum access for cognitive radios in the presence of multiple co-channel transmitters. A spectrum hole detection and...
Provided by George Mason University
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White Papers
Performance of a Cognitive Radio Network With Tolerable Service Degradation
August 24, 2009, 12:00am PDT
The authors analyze the performance of a cognitive radio wireless network, where secondary users opportunistically share the radio spectrum with primary users through spectrum sensing and may...
Provided by George Mason University
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White Papers
Combining Cooperative Relaying With Spectrum Sensing in Cognitive Radio Networks
October 18, 2009, 12:00am PDT
In a network with dynamic spectrum access, secondary users equipped with frequency-agile cognitive radios communicate with one another via spectrum that is not being used by the primary, licensed...
Provided by George Mason University
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White Papers
Exploiting Multiuser Diversity for Spectrum Sensing in Cognitive Radio Networks
October 18, 2009, 12:00am PDT
The authors consider wireless system consisting of secondary users equipped with cognitive radios that attempt to access radio spectrum that is not being used by the primary licensed users. To...
Provided by George Mason University
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White Papers
Cooperative Communication With Regenerative Relays for Cognitive Radio Networks
February 26, 2010, 12:00am PST
Cognitive radios hold tremendous promise for increasing spectral efficiency in wireless systems. In cognitive radio networks, secondary users equipped with frequency-agile cognitive radios...
Provided by George Mason University
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White Papers
Exploiting Multichannel Diversity in Cognitive Radio Networks
May 21, 2010, 12:00am PDT
Cognitive radios hold tremendous promise for increasing spectral efficiency in wireless systems. In cognitive radio networks, secondary users equipped with frequency-agile cognitive radios...
Provided by George Mason University
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White Papers
Hidden Markov Process Based Dynamic Spectrum Access for Cognitive Radio
February 23, 2011, 12:00am PST
Cognitive radio is an emerging technology for sensing and dynamic access of spectrum in mobile radio environments. It aims at dynamically allocating unused bandwidth among secondary users without...
Provided by George Mason University
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White Papers
Estimation of Maximum Interference-Free Transmit Power Level for Opportunistic Spectrum Access
August 4, 2008, 12:00am PDT
The authors consider a scenario in which frequency agile radios opportunistically share a fixed spectrum resource with a set of primary nodes. They develop a collaborative scheme for a group of...
Provided by George Mason University
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White Papers
Spectrum Sensing With SS-AOA Measurements and Directional Transmissions
May 8, 2009, 12:00am PDT
For successful Opportunistic Spectrum Access (OSA) using spatial information, accurate localization is a crucial first step. In this paper, the authors consider a group of unlicensed (secondary)...
Provided by George Mason University
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White Papers
Measurement Clustering Criteria for Localization of Multiple Transmitters
March 2, 2009, 12:00am PST
The authors consider the problem of localizing multiple co-channel transmitters belonging to a licensed or primary network using signal strength measurements taken by a group of unlicensed or...
Provided by George Mason University
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White Papers
Capacity Bounds in Random Wireless Networks
September 7, 2011, 12:00am PDT
The authors consider a receiving node, located at the origin, and a Poisson point process that models the locations of the desired transmitter as well as the interferers. Interference is known to...
Provided by George Mason University
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White Papers
CapMan: Capability-Based Defense Against Multi-Path Denial of Service (DoS) Attacks in MANET
April 26, 2011, 12:00am PDT
This paper presents a capability-based security mechanism called CapMan. The authors' approach is designed to prevent Denial-of-Service (DoS) attacks on wireless communications, particularly...
Provided by George Mason University
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White Papers
An Empirical Study on Variants of TCP Over AODV Routing Protocol in MANET
September 5, 2011, 12:00am PDT
The cardinal concept of TCP development was to carry data within the network where network congestion plays a vital role to cause packet loss. On the other hand, there are several other reasons to...
Provided by George Mason University
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White Papers
Informed Trading Before Analyst Downgrades: Evidence From Short Sellers
April 1, 2008, 12:00am PDT
This paper studies short-selling prior to the release of analyst downgrades in a sample of 670 downgrades of NASDAQ stocks between 2000 and 2001. The authors document abnormal levels of...
Provided by George Mason University
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White Papers
Encryption-Based Policy Enforcement for Cloud Storage
June 27, 2010, 12:00am PDT
Nowadays, users are more and more exploiting external storage and connectivity for sharing and disseminating user-generated content. To this aim, they can benefit of the services offered by...
Provided by George Mason University
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White Papers
Opportunistic Spectrum Sharing With Multiple Cochannel Primary Transmitters
February 20, 2009, 12:00am PST
The authors present a distributed, collaborative algorithm to enable opportunistic spectrum access for cognitive radios in the presence of multiple cochannel transmitters. A spectrum hole...
Provided by George Mason University
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