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Information Technology

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Displaying 1151 - 1175 of 2282

Framework for Emergency Response Officials (ERO): Authentication and Authorization Infrastructure

August 31, 2010

Author(s)

Ramaswamy Chandramouli, Teresa T. Schwarzhoff

This document describe a framework (with the acronym ERO-AA) for establishing an infrastructure for authentication and authorization of Emergency Response officials (ERO) who respond to various types of man-made and natural disasters. The population of

Introduction: Cybersecurity

August 31, 2010

Author(s)

David R. Kuhn

Enterprise security, often considered a burden for system administrators and users alike, is one of the most rapidly evolving areas of IT. The articles in this issue can help IT professionals who want to be intelligent providers or consumers of secure

Assessing the Effectiveness of Security Controls in Federal Information Systems

August 23, 2010

Author(s)

Shirley M. Radack

This bulletin summarizes the information presented in NIST Special Publication (SP) 800-53A, Revision 1, Guide for Assessing the Security Controls in Federal Information Systems and Organizations: Building Effective Security Assessment Plans. The revised

A Flexible and Efficient Numerical Framework for Image Segmentation by Energy Minimization

August 22, 2010

Author(s)

Gunay Dogan

A widely used approach to image segmentation is to define corresponding segmentation energies and to compute shapes that are minimizers of these energies. In this work, we introduce a flexible and efficient numerical framework for minimization of such

Message Recovery and Pseudo-Preimage Attacks on the Compression Function of Hamsi-256

August 8, 2010

Author(s)

Cagdas Calik , Meltem Sonmez Turan

Hamsi is one of the second round candidates of the SHA-3 competition. In this study, we present non-random differential properties for the compression function of Hamsi-256. Based on these properties, we first demonstrate a distinguishing attack that

Non-Coherent Amplify-and-Forward Generalized Likelihood Ratio Test Receiver

July 30, 2010

Author(s)

Michael R. Souryal

This paper proposes a simple non-coherent amplify-and-forward receiver for the relay channel and evaluates its diversity performance for Rayleigh fading channels. We use the generalized likelihood ratio test to obtain the decision rule in closed form

Guide to Adopting and Using the Security Content Automation Protocol (SCAP), Version 1.0

July 27, 2010

Author(s)

Stephen D. Quinn, Karen A. Scarfone, Matthew P. Barrett, Christopher S. Johnson

The purpose of this document is to provide an overview of the Security Content Automation Protocol (SCAP). This document discusses SCAP at a conceptual level, focusing on how organizations can use SCAP-enabled tools to enhance their security posture. It

Impact of RF Interference between a Passive RFID System and a Frequency Hopping Communications System in the 900 MHz ISM Band

July 25, 2010

Author(s)

Michael R. Souryal

We present experimental measurements and analysis of RF interference between a passive RFID system and a generic frequency hopping communications system in the 902 928 MHz ISM radio band. Interference in both directions is considered, RFID to

Contingency Planning for Information Systems: Updated Guide for Federal Organizations

July 20, 2010

Author(s)

Shirley M. Radack

This bulletin summarizes the information presented in NIST Special Publication (SP) 800-34, Rev. 1, Contingency Planning Guide for Federal Information Systems. This publication updates federal contingency planning practices by integrating risk management

Findings of the 2010 Joint Workshop on Statistical Machine Translation and Metrics for Machine Translation

July 20, 2010

Author(s)

Chris Callison-Burch, Philipp Koehn, Christof Monz, Kay Peterson, Mark A. Przybocki, Omar F. Zaidan

This paper presents the results of the WMT10 and MetricsMATR10 shared tasks, which included a translation task, a system combination task, and an evaluation task. We conducted a large-scale manual evaluation of 104 machine translation systems and 41 system

Towards Evolutionary-Pricing Framework for Mobile Sensor Network Self-organization

July 18, 2010

Author(s)

Vladimir V. Marbukh, Kamran Sayrafian, Hamid Mahboubi, Ahmadreza Momeni, Amir G. Aghdam

This paper reports on work in progress on developing a unified co-evolutionary/pricing framework for Mobile Sensor Networks (MSN) self-organization. MSN self-organization involves cooperative sensor positioning and formation of a multi-hop Mobile Ad-hoc

Measuring Security Risk of Networks Using Attack Graphs

July 14, 2010

Author(s)

Steven Noel, Lingyu Wang, Anoop Singhal, Sushil Jajodia

Today's computer systems face sophisticated attackers who combine multiple vulnerabilities to penetrate networks with devastating impact. The overall security of a network cannot be determined by simply counting the number of vulnerabilities. To accurately

Investigating the Bag-of-Words Method for 3D Shape Retrieval

June 30, 2010

Author(s)

Afzal A. Godil, Xiaolan Li

This paper investigates the capabilities of the Bag-of-Words (BW) method in the 3D shape retrieval field. The contributions of this paper are: 1) the 3D shape retrieval task is categorized from different points of view: specific vs. generic, partial-to

Optimal Target Tracking Strategy with Controlled Node Mobility in Mobile Sensor Networks

June 30, 2010

Author(s)

Kamran Sayrafian, Vladimir V. Marbukh, Hamid Mahboubi, Ahmadreza Momeni, Amir G. Aghdam

This paper is concerned with target tracking using a network of collaborative sensors. The objective is to compute (online) the desired sensing and communication radii of sensors as well as their location at each time instant, such that a set of prescribed

Vulnerability of Selfish Routing to Attacks: Game-theoretic Models and Initial Results

June 30, 2010

Author(s)

Daniel I. Genin, Vladimir Marbukh, Anastase Nakassis

This paper reports on work in progress on assessing and mitigating selfish routing vulnerability to strategic attacks. We explain mechanisms leading to this vulnerability, propose the corresponding game-theoretic model, solve this model for some particular

Guide for Assessing the Security Controls in Federal Information Systems and Organizations: Building Effective Security Assessment Plans

June 29, 2010

Author(s)

Ronald S. Ross, L A. Johnson

[Superseded by SP 800-53A Rev. 4 (December 2014): http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917644] Special Publication 800-53A, Revision 1 provides guidelines for developing security assessment plans and associated security control

APPROACHES AND BEST PRACTICES: Data Collection of Audio Dialogues to Support the Training of Speech-to-Speech Translation Systems

June 25, 2010

Author(s)

Brian A. Weiss, Craig I. Schlenoff, Ann M. Virts

The purpose of this document is to describe the best practices that personnel from the National Institute of Standards and Technology (NIST) have developed and implemented to efficiently and effectively capture two-way, free-form speech-to-speech audio

Authentication Assurance Level Taxonomies for Smart Identity Token Deployments - A New Approach

June 21, 2010

Author(s)

Ramaswamy Chandramouli

Authentication assurance level taxonomies that have been specified in many real-world smart identity token deployments do not fully reflect all the security properties associated with their underlying authentication mechanisms. In this paper we describe

Complex Systems Collected Images of the Month March 2008 - June 2010

June 16, 2010

Author(s)

Sanford P. Ressler

This document is a collection of twenty eight Complex Systems Image of the Month (IOM) illustrations. Each month as part of the Complex Systems Program in the Information Technology Laboratory an IOM is produced, posted to the Complex Systems web site and

Statistical Modeling of Harvestable Kinetic Energy for Wearable Medical Sensors

June 15, 2010

Author(s)

Nathalie Yarkony, Kamran Sayrafian, Antonio Possolo

Energy Harvesting (EH) refers to the process of capturing and storing energy from external sources or ambient environment. Kinetic energy harvested from the human body motion seems to be one of the most convenient and attractive solution for wearable

State of Security Readiness

June 10, 2010

Author(s)

Ramaswamy Chandramouli, Peter M. Mell

Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources that can be rapidly provisioned and released with minimal management effort or service provider interaction. However, the

A Comprehensive Spatial-Temporal Channel Propagation Model for the Ultra-Wideband Spectrum 2-8 Ghz.

June 7, 2010

Author(s)

Camillo A. Gentile

Despite the potential for high-speed communications, stringent regulatory mandates on Ultra-Wideband (UWB) emission have hindered its commercial success. By combining resolvable UWB multipath from different directions, Multiple-Input Multiple-Output (MIMO)

Blog Track Research at TREC

June 1, 2010

Author(s)

Ian M. Soboroff, Craig Macdonald, Rodrygo Santos, Iadh Ounis

The TREC Blog track aims to explore information seeking behaviour in the blogosphere, by building reusable test collections for blog-related search tasks. Since, its advent in TREC 2006, the Blog track has led to much research in this growing field, and

Media Independent Handover Transport Using Cross-Layer Optimized Stream Control Transmission Protocol

June 1, 2010

Author(s)

Richard A. Rouil, Nada T. Golmie

The Media Independent Handover (MIH)architecture finalized by the IEEE 802.21 working group facilitates handovers between heterogeneous networks. The signaling messages exchanged between the network entities, namely Mobile Nodes (MNs) and Points of Service

A Low Complexity Interference Cancellation Technique for Multi-User DS-CDMA Communications

May 27, 2010

Author(s)

Wen-Bin Yang, Kamran Sayrafian

A low complexity Parallel Interference Cancellation (PIC) technique is proposed to suppress Multi-Access Interference (MAI) and minimize near-far effect for multi-user communication using Direct-Sequence Code Division Multiple Access (DS-CDMA)

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