George Mason University

Displaying 41-80 of 123 results

  • White Papers // Jan 2011

    Does Antitrust Enforcement In High Tech Markets Benefit Consumers? Stock Price Evidence From FTC V. Intel

    Antitrust enforcement efforts in the United States and abroad have been ramped up in high-tech industries, rekindling stale and largely unresolved debates concerning the appropriate role of antitrust enforcement in high-tech markets. Like the previous enforcement actions against Microsoft, and likely enforcement efforts in the future against similarly situated business...

    Provided By George Mason University

  • White Papers // Dec 2010

    Ruminate: A Scalable Architecture for Deep Network Analysis

    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 network streams and network protocols. Unfortunately, current NIDS are typically susceptible to evasion through network protocol encoding, such as base64 encoding of SMTP/MIME or...

    Provided By George Mason University

  • White Papers // Dec 2010

    Method and Model to Assess the Performance of Clustered Databases: The Oracle RAC Case

    Oracle allows for locking at the row level and uses a multi-version read consistency model. To provide scalability, Oracle embeds lock data into the data blocks within the database. For added availability and performance, Oracle provides Real Application Cluster (RAC), which has a shared cache and can operate on a...

    Provided By George Mason University

  • White Papers // Dec 2010

    Predicting Network Response Times Using Social Information

    Social networks and discussion boards have become a significant outlet where people communicate and express their opinion freely. Although the social networks themselves are usually well-provisioned, the participating users frequently point to external links to substantiate their discussions. Unfortunately, the sudden heavy traffic load imposed on the external, linked web...

    Provided By George Mason University

  • White Papers // Nov 2010

    GeoMason: GeoSpatial Support for MASON

    MASON is a free, open-source Java-based discrete event multi-agent simulation toolkit that has been used to model network intrusions, unmanned aerial vehicles, nomadic migrations, and farmer/herder conflicts, among others. Many multi-agent models use georeferenced data which represent such things as road networks, rivers, vegetation coverage, population, and topology. However, MASON...

    Provided By George Mason University

  • White Papers // Oct 2010

    Detection of Communities and Bridges in Weighted Networks

    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, recent research on graph-based clustering methods, applied to real world networks (e.g., Protein-protein interaction networks and social networks), shows overlapping patterns among the...

    Provided By George Mason University

  • White Papers // Oct 2010

    Deliberative Democracy And Political Ignorance

    Advocates of "Deliberative democracy" want citizens to actively participate in serious dialogue over political issues, not merely go to the polls every few years. Unfortunately, these ideals don't take into account widespread political ignorance and irrationality. Most voters neither attain the level of knowledge needed to make deliberative democracy work,...

    Provided By George Mason University

  • White Papers // Oct 2010

    Policy Reversal On Reverse Payments: Why Courts Should Not Follow The New DOJ Position On Reverse-Payment Settlements Of Pharmaceutical Patent Litigation

    In a recent policy reversal, the Department of Justice has, for the first time, pursued antitrust liability for "Reverse payment" settlements. These settlements occur in the pharmaceutical industry when brand-name and generic-drug companies settle patent-infringement litigation. In a reverse-payment settlement, the generic-drug company agrees not to enter the market for...

    Provided By George Mason University

  • White Papers // Oct 2010

    Transformation In Property And Copyright

    Copyright law grants ownership rights in "Works of authorship," and copyright disputes frequently require one to distinguish between two different ways in which a "Work of authorship" may be "Transformed". On one side of the line are changes whose end result is termed a ?derivative work, and which are therefore...

    Provided By George Mason University

  • White Papers // Oct 2010

    Employee "Free" Choice In The Mirror Of Liberty, Fairness And Social Welfare

    The publication of Richard Epstein's book, THE CASE AGAINST THE EMPLOYEE FREE CHOICE ACT provides an opportunity to reconsider the movement to displace the regime of judge-made law that had previously governed labor relationships, the purpose of the NLRA and the revolutionary implications of the effort to transform the NLRA...

    Provided By George Mason University

  • White Papers // Sep 2010

    Artificial Malware Immunization Based on Dynamically Assigned Sense of Self

    Computer malwares (e.g., botnets, rootkits and spyware) are one of the most serious threats to all computers and networks. Most malwares conduct their malicious actions via hijacking the control flow of the infected system or program. Therefore, it is critically important to protect the mission critical systems from malicious control...

    Provided By George Mason University

  • White Papers // Sep 2010

    Unfolding The Allegory Behind Market Communication And Social Error And Correction

    One aspect of the present paper is to draw out the Adam Smith in Friedrich Hayek. The author suggests that common economic talk of market communication, market error and correction, and policy error and correction invokes a spectatorial being and appeals to our sympathy with such being. Behind such common...

    Provided By George Mason University

  • White Papers // Aug 2010

    CAROSA: A Tool for Authoring NPCs

    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 setting of a game. Furthermore, watching NPCs perform and have a life out-side of their interactions with the main...

    Provided By George Mason University

  • White Papers // Aug 2010

    Energy Management for Time-Critical Energy Harvesting Wireless Sensor Networks

    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 (WSN) technologies will require the use of energy harvesting methods to extend their lifetimes. For this application class, there are currently few effective models that...

    Provided By George Mason University

  • White Papers // Jul 2010

    Dynamic Cloud Management System for Monitoring and Managing Services

    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 resources and services provided by cloud computing environments. While these large corporations have most likely implemented efficient, dynamic, and scalable...

    Provided By George Mason University

  • White Papers // Jul 2010

    Constraints-Based Complex Behavior in Rich Environments

    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 Logic mission planning generates controllers that are guaranteed to satisfy complex requirements that describe reactive and possibly infinite behaviors. However, enumerating all the...

    Provided By George Mason University

  • White Papers // Jul 2010

    Providing Mobile Users' Anonymity in Hybrid Network

    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 to both Wi-Fi and cellular networks. Unlike existing anonymity schemes, they consider all parties that can intercept communications between the mo-bile user and...

    Provided By George Mason University

  • White Papers // Jul 2010

    HyperCheck: A Hardware-Assisted Integrity Monitor

    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 Machine Monitors (VMMs) as a new mechanism to guarantee deep isolation of untrusted software components. Unfortunately, their widespread adoption promoted VMMs as a prime...

    Provided By George Mason University

  • White Papers // Jul 2010

    Providing Mobile Users' Anonymity in Hybrid Networks

    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 to both WiFi and cellular networks. Unlike existing anonymity schemes, they consider all parties that can intercept communications between the mobile user and...

    Provided By George Mason University

  • White Papers // Jun 2010

    Encryption-Based Policy Enforcement for Cloud Storage

    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 Internet companies, which however assume that the service provider is entitled to access the resources. To overcome this limitation, the authors present...

    Provided By George Mason University

  • White Papers // Jun 2010

    Transmission Probability Control Game for Coexisting Random ALOHA Wireless Networks in Unlicensed Bands

    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 the transmission probabilities in these networks to maximize the throughput in each network. Throughput in each system is limited...

    Provided By George Mason University

  • White Papers // Jun 2010

    On the Role of Architectural Styles in Improving the Adaptation Support of Middleware Platforms

    Modern middleware platforms provide the applications deployed on top of them with facilities for their adaptation. However, the level of adaptation support provided by the state-of-the-art middleware solutions is often limited to dynamically loading and off-loading of software components. Therefore, it is left to the application developers to handle the...

    Provided By George Mason University

  • White Papers // Jun 2010

    Geospatial Cyberinfrastructure: Past, Present and Future

    A CyberInfrastructure (CI) is a combination of data resources, network protocols, computing platforms, and computational services that brings people, information, and computational tools together to perform science or other data-rich applications in this information-driven world. Most science domains adopt intrinsic geospatial principles (such as spatial constraints in phenomena evolution) for...

    Provided By George Mason University

  • White Papers // May 2010

    Fair and Comprehensive Methodology for Comparing Hardware Performance of Fourteen Round Two SHA-3 Candidates Using FPGAs

    Performance in hardware has been demonstrated to be an important factor in the evaluation of candidates for cryptographic standards. Up to now, no consensus exists on how such an evaluation should be performed in order to make it fair, transparent, practical, and acceptable for the majority of the cryptographic community....

    Provided By George Mason University

  • White Papers // May 2010

    Effective Outlier Detection in Science Data Streams

    The growth in data volumes from all aspects of space and earth science (satellites, sensors, observatory monitoring systems, and simulations) requires more effective knowledge discovery and extraction algorithms. Among these are algorithms for outlier (novelty / surprise / anomaly) detection and discovery. Effective outlier detection in data streams is essential...

    Provided By George Mason University

  • White Papers // May 2010

    Exploiting Multichannel Diversity in Cognitive Radio Networks

    Cognitive radios hold tremendous promise for increasing spectral efficiency in wireless systems. In cognitive radio networks, secondary users equipped with frequency-agile cognitive radios communicate with one another via spectrum that is not being used by the primary, licensed users of the spectrum. The authors consider a multichannel cognitive radio network...

    Provided By George Mason University

  • White Papers // May 2010

    Model-Based System Development for Managing the Evolution of a Common Submarine Combat System

    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 significant challenge. An example is managing the evolution of a common combat system across a fleet of submarines. Due to the realities...

    Provided By George Mason University

  • White Papers // May 2010

    Universal Multi-Factor Authentication Using Graphical Passwords

    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 investments in larger transformation programs. In the case of AO, companies can ask their suppliers to manage...

    Provided By George Mason University

  • White Papers // May 2010

    Context-Driven Optimization of Mobile Service-Oriented Systems for Improving Their Resilience

    Mobile software systems are characterized by their highly dynamic and unpredictable execution context. Such systems are permeating a number of domains where the systems operate in constantly changing conditions. The authors refer to such systems as Situated Software Systems. These systems are often deployed in mission-critical settings with stringent reliability...

    Provided By George Mason University

  • White Papers // Apr 2010

    Functional Crowds

    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 populations that inhabit a space as opposed to passing through it. Characters exhibit behaviors that are typical for their setting. They term these...

    Provided By George Mason University

  • White Papers // Apr 2010

    Proactive Intrusion Prevention and Response via Attack Graphs

    Network defense today is largely reactive rather than proactive, and lacks sufficient context for optimal countermeasures. Administrators and security analysts are overwhelmed by constant outside threats, complexity of security measures, and network growth. Today's status quo for network defense is often reduced to mere triage and after-the-fact remediation. This paper...

    Provided By George Mason University

  • White Papers // Apr 2010

    Optimal IDS Sensor Placement And Alert Prioritization Using Attack Graphs

    The authors optimally place Intrusion Detection System (IDS) sensors and prioritize IDS alerts using attack graph analysis. They begin by predicting all possible ways of penetrating a network to reach critical assets. The set of all such paths through the network constitutes an attack graph, which they aggregate according to...

    Provided By George Mason University

  • White Papers // Apr 2010

    Getting It Right The First Time: Belief Elicitation With Novice Participants

    The auction design literature makes clear that theoretically equivalent mechanisms can perform very differently in practice. Though of equal importance, much less is known about the empirical performance of theoretically equivalent mechanisms for belief elicitation. This is especially unfortunate given the increasing interest in eliciting beliefs from respondents in large-scale...

    Provided By George Mason University

  • White Papers // Mar 2010

    TopBT: A Topology-Aware and Infrastructure-Independent BitTorrent Client

    BitTorrent (BT) has carried out a significant and continuously increasing portion of Internet traffic. While several designs have been recently proposed and implemented to improve the resource utilization by bridging the application layer (overlay) and the network layer (underlay), these designs are largely dependent on Internet infrastructures, such as ISPs...

    Provided By George Mason University

  • White Papers // Feb 2010

    Cooperative Communication With Regenerative Relays for Cognitive Radio Networks

    Cognitive radios hold tremendous promise for increasing spectral efficiency in wireless systems. In cognitive radio networks, secondary users equipped with frequency-agile cognitive radios communicate with one another via spectrum that is not being used by the primary, licensed users of the spectrum. The authors consider a cooperative communication scenario in...

    Provided By George Mason University

  • White Papers // Feb 2010

    Security Policy Cognizant Module Composition

    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 and their dependencies on providing these computations - that results in a well known requires-provides specifications for modules. This paper provides a framework...

    Provided By George Mason University

  • White Papers // Jan 2010

    High Level Fusion and Predictive Situational Awareness With Probabilistic Ontologies

    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 interoperability and composeability. New technologies such as SOA and semantically aware systems have come into the spotlight. This paper argues that just...

    Provided By George Mason University

  • White Papers // Jan 2010

    GeoInformation Computing & Cyberinfrastructure

    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 capability for collecting petabytes of data on a daily basis. 2) Research in the past years produces computing intensive algorithms and models for analyzing the...

    Provided By George Mason University

  • White Papers // Jan 2010

    An Integrated Multi-Task Inductive Database and Decision Support System VINLEN: An Initial Implementation and First Results

    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 input data and/or knowledge create new knowledge. The central operator of VINLEN is a natural induction module that generates hypotheses from...

    Provided By George Mason University

  • White Papers // Dec 2009

    An Empirical Investigation Into the Security of Phone Features in SIP-Based VoIP Systems

    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 phone features. They have implemented a number of attacks and experimented with VoIP services by leading VoIP service providers Vonage,...

    Provided By George Mason University

  • White Papers // Jan 2011

    Life After Self-Healing: Assessing Post-Repair Program Behavior

    One promising technique for defending software systems against vulnerabilities involve the use of self-healing. Such efforts, however, carry a great deal of risk because they largely bypass the cycle of human-driven patching and testing used to vet both vendor and internally developed patches. In particular, it is difficult to predict...

    Provided By George Mason University

  • White Papers // Nov 2010

    GeoMason: GeoSpatial Support for MASON

    MASON is a free, open-source Java-based discrete event multi-agent simulation toolkit that has been used to model network intrusions, unmanned aerial vehicles, nomadic migrations, and farmer/herder conflicts, among others. Many multi-agent models use georeferenced data which represent such things as road networks, rivers, vegetation coverage, population, and topology. However, MASON...

    Provided By George Mason University

  • White Papers // Apr 2009

    Piecewise Planar City 3D Modeling From Street View Panoramic Sequences

    City environments often lack textured areas, contain repetitive structures, strong lighting changes and therefore are very difficult for standard 3D modeling pipelines. The authors present a novel unified framework for creating 3D city models which overcomes these difficulties by exploiting image segmentation cues as well as presence of dominant scene...

    Provided By George Mason University

  • White Papers // Jul 2010

    Providing Mobile Users' Anonymity in Hybrid Networks

    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 to both WiFi and cellular networks. Unlike existing anonymity schemes, they consider all parties that can intercept communications between the mobile user and...

    Provided By George Mason University

  • White Papers // Jul 2009

    VirusMeter: Preventing Your Cellphone From Spies

    Due to the rapid advancement of mobile communication technology, mobile devices nowadays can support a variety of data services that are not traditionally available. With the growing popularity of mobile devices in the last few years, attacks targeting they are also surging. Existing mobile malware detection techniques, which are often...

    Provided By George Mason University

  • White Papers // Sep 2010

    Artificial Malware Immunization Based on Dynamically Assigned Sense of Self

    Computer malwares (e.g., botnets, rootkits and spyware) are one of the most serious threats to all computers and networks. Most malwares conduct their malicious actions via hijacking the control flow of the infected system or program. Therefore, it is critically important to protect the mission critical systems from malicious control...

    Provided By George Mason University

  • White Papers // Oct 2009

    Towards a Framework for Group-Centric Secure Collaboration

    The concept of groups is a natural aspect of most collaboration scenarios. Group-centric Secure Information Sharing models (g-SIS) have been recently proposed in which users and objects are brought together to promote sharing and collaboration. Users may join, leave and re-join and objects may be added, removed and re-added. Furthermore,...

    Provided By George Mason University

  • White Papers // Jun 2009

    A Hybrid Enforcement Model for Group-Centric Secure Information Sharing

    Group-centric Secure Information Sharing (g-SIS) is motivated by the need to dynamically share information amongst a set of authorized users for a specific purpose. Authorized group users may read and contribute new objects to the group. An important usability objective in g-SIS is to allow users to access group objects...

    Provided By George Mason University

  • White Papers // Sep 2010

    Unfolding The Allegory Behind Market Communication And Social Error And Correction

    One aspect of the present paper is to draw out the Adam Smith in Friedrich Hayek. The author suggests that common economic talk of market communication, market error and correction, and policy error and correction invokes a spectatorial being and appeals to our sympathy with such being. Behind such common...

    Provided By George Mason University

  • White Papers // Jul 2011

    Network Security Risks Associated With IaaS in a Shared Environment

    Cloud computing offers extraordinary benefits and efficiencies to organizations. Organizations can now purchase computing resources on an as-needed basis without the overhead and costs of managing their own IT resources. However, with those efficiencies come many hurdles that must be overcome. Understanding what is going on behind the opaque wall...

    Provided By George Mason University

  • White Papers // Dec 2012

    Concurrent Object-Oriented Development with Behavioral Design Patterns

    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 Modeling Language (UML) can support the development process, but the problem of mapping the model to a concurrent implementation remains. This paper addresses this problem...

    Provided By George Mason University

  • White Papers // Jul 2012

    Security Margin Evaluation of SHA-3 Contest Finalists Through SAT-Based Attacks (Extension)

    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 security margin of five SHA-3 finalists is evaluated with an assumption that attacks launched on finalists should be...

    Provided By George Mason University

  • White Papers // Oct 2012

    Comprehensive Evaluation of High-Speed and Medium-Speed Implementations of Five SHA-3 Finalists Using Xilinx and Altera FPGAs

    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 algorithm is implemented using multiple architectures based on the concepts of iteration, folding, unrolling, pipelining, and circuit replication....

    Provided By George Mason University

  • White Papers // Jun 2012

    The Virtual Apprentice

    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 benefited from work in this area. While the visual quality of virtual agents has improved dramatically, their intelligence and socialization still needs...

    Provided By George Mason University

  • White Papers // Mar 2012

    Crowd Distribution and Location Preference

    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 psychological preferences for choosing goal locations. Both observation and published theory indicate that most people prefer to maintain their personal space as...

    Provided By George Mason University

  • White Papers // Aug 2011

    Populations with Purpose

    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 large number of agents walking from one location to another as realistically as possible. The virtual humans in these crowds lack...

    Provided By George Mason University

  • White Papers // Aug 2010

    CAROSA: A Tool for Authoring NPCs

    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 setting of a game. Furthermore, watching NPCs perform and have a life out-side of their interactions with the main...

    Provided By George Mason University

  • White Papers // Jul 2010

    Constraints-Based Complex Behavior in Rich Environments

    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 Logic mission planning generates controllers that are guaranteed to satisfy complex requirements that describe reactive and possibly infinite behaviors. However, enumerating all the...

    Provided By George Mason University

  • White Papers // Apr 2010

    Functional Crowds

    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 populations that inhabit a space as opposed to passing through it. Characters exhibit behaviors that are typical for their setting. They term these...

    Provided By George Mason University

  • White Papers // Dec 2009

    An Empirical Investigation Into the Security of Phone Features in SIP-Based VoIP Systems

    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 phone features. They have implemented a number of attacks and experimented with VoIP services by leading VoIP service providers Vonage,...

    Provided By George Mason University

  • White Papers // Jan 2013

    Billing Attacks on SIP-Based VoIP Systems

    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 be reliable and trustworthy. From the VoIP subscriber's perspective, VoIP billing should only charge them for the...

    Provided By George Mason University

  • White Papers // Jan 2013

    Out-of-the-Box Monitoring of VM-Based High-Interaction Honeypots

    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 honeypots, especially high-interaction ones, largely rely on the monitoring capability on the honeypots. In practice, based on the location of sensors,...

    Provided By George Mason University

  • White Papers // Sep 2012

    Geoprocessing on the Amazon Cloud Computing Platform - AWS

    With the continuously increment of the available amount of spatial data sets, science, industry and administration require web-based geo-information concerning storage, availability and processing. The development of Spatial Data Infrastructures (SDIs) brings about the Web-based sharing of large volumes of distributed geospatial data and computational resources. A powerful, dependable and...

    Provided By George Mason University

  • White Papers // Jun 2010

    Geospatial Cyberinfrastructure: Past, Present and Future

    A CyberInfrastructure (CI) is a combination of data resources, network protocols, computing platforms, and computational services that brings people, information, and computational tools together to perform science or other data-rich applications in this information-driven world. Most science domains adopt intrinsic geospatial principles (such as spatial constraints in phenomena evolution) for...

    Provided By George Mason University

  • White Papers // Jan 2010

    GeoInformation Computing & Cyberinfrastructure

    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 capability for collecting petabytes of data on a daily basis. 2) Research in the past years produces computing intensive algorithms and models for analyzing the...

    Provided By George Mason University

  • White Papers // Aug 2010

    Energy Management for Time-Critical Energy Harvesting Wireless Sensor Networks

    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 (WSN) technologies will require the use of energy harvesting methods to extend their lifetimes. For this application class, there are currently few effective models that...

    Provided By George Mason University

  • White Papers // Oct 2010

    Detection of Communities and Bridges in Weighted Networks

    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, recent research on graph-based clustering methods, applied to real world networks (e.g., Protein-protein interaction networks and social networks), shows overlapping patterns among the...

    Provided By George Mason University

  • White Papers // Dec 2010

    Ruminate: A Scalable Architecture for Deep Network Analysis

    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 network streams and network protocols. Unfortunately, current NIDS are typically susceptible to evasion through network protocol encoding, such as base64 encoding of SMTP/MIME or...

    Provided By George Mason University

  • White Papers // Jan 2011

    RandSys: Thwarting Code Injection Attacks With System Service Interface Randomization

    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 networked hosts so that attacks that succeed on one process or one host cannot succeed on others. Two most notable system-wide randomization...

    Provided By George Mason University

  • White Papers // Jan 2010

    High Level Fusion and Predictive Situational Awareness With Probabilistic Ontologies

    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 interoperability and composeability. New technologies such as SOA and semantically aware systems have come into the spotlight. This paper argues that just...

    Provided By George Mason University

  • White Papers // Apr 2009

    Building an On-Line Geospatial Analysis System With AJAX and Web Services

    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 project has built a powerful online extensible and scalable geospatial analysis system based on SOA. This system utilizes Web Services and AJAX to increase...

    Provided By George Mason University

  • White Papers // May 2009

    Using Ajax for Desktop-Like Geospatial Web Application Development

    As one of key components of Web 2.0 architecture, Ajax brings web applications with more responsive, interactive, intuitive and dynamic features. With its rich combination of technologies, Ajax provides a strong foundation for the development of geospatial web applications. An Ajax-enabled and desktop-like online geospatial analysis system is built to...

    Provided By George Mason University

  • White Papers // Nov 2009

    The Israeli Ethos Of Conflict 1967-2006

    This paper focuses on a major component of the psychological repertoire that evolves during an intractable conflict - the ethos of conflict and the changes in this ethos over time. The paper presents a theoretical framework that can be used to analyze and explain changes in ethos of intractable conflict,...

    Provided By George Mason University

  • White Papers // Jun 2009

    Do You Reward And Punish In The Way You Think Others Expect You To?

    This paper addresses three questions: When deciding on whether to reward or punish someone, how does how you think others expect you to behave affect your decision? Does it depend upon whether others expect you to reward them vs. punish them? What is the interpretation of such a causal effect?...

    Provided By George Mason University

  • White Papers // Aug 2009

    Temptation At Work: A Field Experiment On Willpower And Productivity

    Temptations are a largely unavoidable part of life. Resisting them is usually seen as a virtuous behavior. Recent research in social psychology, however, suggests that using willpower to delay gratification can detrimentally impact performance on immediately subsequent tasks. Using standard economic theory, the authors develop a model connecting willpower to...

    Provided By George Mason University

  • White Papers // Aug 2009

    Inequality-Seeking Punishment

    Inequality aversion is a key motive for punishment, with many prominent studies suggesting people use punishment to reduce or eliminate inequality. Punishment in laboratory games, however, is nearly always designed to promote equality and the marginal cost of punishment is typically non-trivially positive. As a consequence, individual preferences over punishment...

    Provided By George Mason University

  • White Papers // Aug 2009

    Does Deceptive Advertising Reduce Political Participation? Theory And Evidence

    The authors examine the effect of deceptive advertising on voting decisions in elections. They model two candidate elections in which voters are uncertain about candidates' attributes; and candidates can inform voters of their attributes by sending advertisements. They compare political campaigns with truthful advertising to campaigns in which there is...

    Provided By George Mason University

  • White Papers // Jun 2009

    Neural Responses To Sanction Threats In Two-Party Economic Exchange

    Sanctions are used ubiquitously to enforce obedience to social norms. Recent field studies and laboratory experiments have demonstrated, however, that cooperation is sometimes reduced when incentives meant to promote pro-social decisions are added to the environment. Although a variety of explanations have been suggested, the neural foundations of this effect...

    Provided By George Mason University

  • White Papers // Jan 2011

    The Sound Of One Hand Clapping: The 2010 Merger Guidelines And The Challenge Of Judicial Adoption

    There is ample justification for the consensus view that the Horizontal Merger Guidelines have proven one of antitrust law's great successes in the grounding of antitrust doctrine within economic learning. The foundation of the Guidelines' success has been its widespread adoption by federal courts, which have embraced its rigorous underlying...

    Provided By George Mason University

  • White Papers // Jan 2011

    Contract As Convention

    Contract theory is a curiously neglected field. While the efficiency of contract law rules has received much attention, the same cannot be said of the more basic question why contracts should be enforced. The reliance and autonomy explanations which contract theorists most frequently offer are moreover unpersuasive. Reliance theories would...

    Provided By George Mason University