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Reports by Keyword(s)ROUTING
Total Results: 1020 Pages: Previous [1] 2 3 4 5 6 7 8 9 10 11 Next Results per page:
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Exploiting the Multi-Service Domain Protecting Interface 17 Oct 2012 89 pages
Authors:  Christopher L Robson; NAVAL RESEARCH LAB WASHINGTON DC CENTER FOR COMPUTATIONAL SCIENCE
The full text of this report is available for sale.The technology discussed in this paper demonstrates how a single converged control plane can benefit the U.S. government. It converges the capabilities of information assurance and policy with inter- and intra-domain routing and protection into a single control plane. Additionally, this technology provides a single utility which integrates communications and management control functions. It can asynchronously execute applications locally and/or remotely. This design is attractive to the U.S. government because ...


Rough-Cut Capacity Planning in Multimodal Freight Transportation Networks 30 Sep 2012 127 pages
Authors:  Robert B Hartlage; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
The full text of this report is available for sale.A main challenge in transporting cargo for United States Transportation Command (USTRANSCOM) is in mode selection or integration. Demand for cargo is time sensitive and must be fulfilled by an established due date. Since these due dates are often in flexible, commercial carriers are used at an enormous expense, in order to fill the gap in organic transportation asset capacity. This dissertation develops a new methodology for transportation capacity assignment ...


Topological Constraints on Identifying Additive Link Metrics via End-to-end Paths Measurements 20 Sep 2012 10 pages
Authors:  Liang Ma; Ting He; Kin K Leung; Ananthram Swami; Don Towsley; IBM THOMAS J WATSON RESEARCH CENTER HAWTHORNE NY
The full text of this report is available for sale.We investigate the problem of identifying individual link metrics in a communications network by measuring accumulated end-to-end metrics over selected paths under the assumption that link metrics are additive (e.g., delay) and constant in the measurement duration. Based on linear algebra, we know that all link metrics can be uniquely identified when the number of linearly independent paths is equal to the number of links in the network. However, there ...


Sampling-Based Coverage Path Planning for Complex 3D Structures Sep 2012 245 pages
Authors:  Brendan J Englot; MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF MECHANICAL ENGINEERING
The full text of this report is available for sale.Path planning is an essential capability for autonomous robots; many applications impose challenging constraints alongside the standard requirement of obstacle avoidance. Coverage planning is one such task, in which a single robot must sweep its end effector over the entirety of a known workspace. For two-dimensional environments, optimal algorithms are well-understood. For three-dimensional structures, however, few of the available heuristics succeed over occluded regions and low-clearance areas. This thesis makes ...


tRNA and Its Activation Targets as Biomarkers and Regulators of Breast Cancer. Revision Sep 2012 8 pages
Authors:  Marsha Rosner; Tao Pan; CHICAGO UNIV IL
The full text of this report is available for sale.Breast cancer refers to a variety of types that each derive from distinct causes and merit different treatments. It is crucial to develop new classes of molecules that target heretofore unexplored cellular mechanisms, so that tumors not responsive to current treatments might be responsive to new routes of therapy. We are exploring a previously under-appreciated avenue that can lead to precise identification of breast cancer sub-types to improve treatment options ...


tRNA and Its Activation Targets as Biomarkers and Regulators of Breast Cancer Sep 2012 8 pages
Authors:  Tao Pan; Marsha Rosner; CHICAGO UNIV IL
The full text of this report is available for sale.Breast cancer refers to a variety of types that each derive from distinct causes and merit different treatments. It is crucial to develop new classes of molecules that target heretofore unexplored cellular mechanisms, so that tumors not responsive to current treatments might be responsive to new routes of therapy. We are exploring a previously under-appreciated avenue that can lead to precise identification of breast cancer sub-types to improve treatment options ...


The In-Transit Vigilant Covering Tour Problem of Routing Unmanned Ground Vehicles Aug 2012 72 pages
Authors:  Huang Teng Tan; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
The full text of this report is available for sale.The routing of unmanned ground vehicles for the surveillance and protection of key installations is modeled as a new variant of the Covering Tour Problem (CTP). The CTP structure provides both the routing and target sensing components of the installation protection problem. Our variant is called the in-transit Vigilant Covering Tour Problem (VCTP) and considers not only the vertex cover but also the additional edge coverage capability of the unmanned ...


A Least Squares Temporal Difference Actor-Critic Algorithm with Applications to Warehouse Management Jul 2012 29 pages
Authors:  Reza M Estanjini; Keyong Li; Ioannis Ch Paschalidis; BOSTON UNIV MA
The full text of this report is available for sale.This paper develops a new approximate dynamic programming algorithm for Markov decision problems and applies it to a vehicle dispatching problem arising in warehouse management. The algorithm is of the actor-critic type and uses a least squares temporal difference learning method. It operates on a sample-path of the system and optimizes the policy within a prespecified class parameterized by a parsimonious set of parameters. The method is applicable to a ...


Effect of the Environment and Environmental Uncertainty on Ship Routes Jun 2012 89 pages
Authors:  Stacey L Hall; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
The full text of this report is available for sale.The United States Navy (USN) uses Optimal Track Ship Routing provided by ship routing officers (SRO) to aid in the safe transit of its ships. When a ship makes a transit, the ship provides the SRO an origin, a destination, and a date of departure, and the SRO will generate a route for the ship to proceed along. Avoiding severe weather is the most important consideration in determining the route. ...


Stopping Piracy: Refocusing on Land-based Governance Jun 2012 91 pages
Authors:  Fredrik Borchgrevink; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
The full text of this report is available for sale.The rise in piracy throughout the world in recent years has forced the international community to invest heavily in measures to counter the threat. However, these efforts have had little effect. Lately, the trends in Southeast Asia seem to have turned. In order to counter piracy efficiently, it is critical to fully understand the background and root causes for the phenomenon. Piracy is blamed by some on poverty, relative deprivation, ...


Russian Energy Policy vis-a-vis Europe: Natural Resources as a Means of Foreign Policy Jun 2012 77 pages
Authors:  Kostiantyn V Vagin; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF NATIONAL SECURITY AFFAIRS
The full text of this report is available for sale.The dissolution of the Soviet Union left Russia without efficient military power and with a tumbled-down defense industry, both of which are critically important to supporting its resurfaced superpower ambitions. This obstacle could be overcome by substituting military power with economic power through domination as the region's leading energy supplier. Establishment of government control over the energy sector has become a key element of Russian domestic policy, and it would ...


Defending the Pittsburgh Waterways Against Catastrophic Disruption Jun 2012 86 pages
Authors:  Joshua J Onuska; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OPERATIONS RESEARCH
The full text of this report is available for sale.This thesis develops an Operator's Model that mimics the real-world behavior of coal transport in the Port of Pittsburgh and allows for systematic investigation of what if disruption scenarios. We model the multi-modal flow of coal using a network of nodes and arcs representing river transport, with support from a surrounding system of rail lines and roads. Each mode of shipment has finite capacities with varying costs. Our model routes ...


Algorithms for Ground Soldier Based Simulations and Decision Support Applications. Phase 1 07 May 2012 37 pages
Authors:  Steve Borkman; Marlo Verdesca; Jon Watkins; DIGNITAS TECHNOLOGIES LLC ORLANDO FL
The full text of this report is available for sale.Report developed under Small Business Innovation Research contract. This report describes the results of the research conducted by Dignitas Technologies, LLC, from January 2011 to July 2011, under the Algorithms for Ground Soldier Based Simulations and Decision Support Applications (Tactical Aids) Phase I Small SBIR contract awarded by the Natick Soldier Research, Development and Engineering Center. Dignitas identified, designed and documented detailed methodology descriptions for two terrain reasoning algorithms (Agent ...


Mesh Networking Optimized for Robotic Teleoperation Apr 2012 8 pages
Authors:  Abraham Hart; Narek Pezeshkian; Hoa Nguyen; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA UNMANNED SYSTEMS BRANCH
The full text of this report is available for sale.Mesh networks for robot teleoperation pose different challenges than those associated with traditional mesh networks. Unmanned ground vehicles (UGVs) are mobile and operate in constantly changing and uncontrollable environments. Building a mesh network to work well under these harsh conditions presents a unique challenge. The Manually Deployed Communication Relay (MDCR) mesh networking system extends the range of and provides non-line-of-sight (NLOS) communications for tactical and explosive ordnance disposal (EOD) robots ...


Illicit Drug Trafficking in West Africa -- Primary Surveillance Radar Introduction 22 Mar 2012 36 pages
Authors:  Gregory J Broecker; ARMY WAR COLL CARLISLE BARRACKS PA
The full text of this report is available for sale.The latest World Drug Report from the United Nations Office on Drugs and Crime (UNODC) paints a grim picture of worldwide drug smuggling. Cocaine bound for wealthy industrialized countries is increasingly transiting through poverty-stricken developing countries. The UNODC reports show a clear increase in cocaine and other illicit drugs transiting West Africa. These drugs, which originate in South America, are moving via sea, land, and air through West African countries ...


Performance Analysis of AeroRP with Ground Station Advertisements 12 Mar 2012 13 pages
Authors:  Hemanth Narra; Egemen K Cetinkaya; James P Sterbenz; AIR FORCE FLIGHT TEST CENTER EDWARDS AFB CA
The full text of this report is available for sale.Data transmission in highly-dynamic airborne networks is challenging thus domain-specific routing protocols are necessary. AeroRP is one such protocol designed to operate in disruption-tolerant networks. Its multi modal design enables it to operate in varying mission requirements. In this paper, we discuss the operation of various AeroRP modes and analyse their performance using the ns-3 network simulator. We compare the performance of beacon, beaconless, and ground station (GS) modes of ...


Using Hybrid Simulation/Analytical Queueing Networks to Capacitate USAF Air Mobility Command Passenger Terminals Mar 2012 100 pages
Authors:  II Jessup Meredithe A; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
The full text of this report is available for sale.The objective of this study is to model operations at an airport passenger terminal to determine the optimal service capacities at each station given estimated passenger flow patterns and service rates. The central formulation is an open Jackson queueing network that can be applied to any USAF Air Mobility Command (AMC) terminal regardless of passenger type mix and flow data. A complete methodology for analyzing passenger flows and queue performance ...


Afghanistan Air Cargo Routing: An Inter/Intra-Theater Approach Mar 2012 121 pages
Authors:  Timothy W Breitbach; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
The full text of this report is available for sale.The establishment of optimal air transportation routing procedures is crucial to delivering cargo to warfighting customers on time and at the lowest possible cost. This research effort examines the current practices utilized to move cargo to and within Afghanistan from a system's perspective. First, a Microsoft Excel tool was developed to extract cargo and passenger supply and demand information from the hundreds of thousands of lines of data the air ...


Decentralized Cooperative Networking 24 Feb 2012 11 pages
Authors:  Jr Cimini Leonard J; DELAWARE UNIV NEWARK DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
The full text of this report is available for sale.Future tactical networks will be complex, with severe constraints on energy and bandwidth, operating in dynamic and unpredictable environments. By exploiting the broadcast nature of a wireless medium and spatially dispersed nodes, some of the advantages of using multiple antennas can be realized through cooperation among nodes in a network. Recent work has demonstrated that cooperation can provide increased range, improved efficiency, and more reliable and longer lasting connectivity. However, ...


Energy-Efficient High-Performance Routers Feb 2012 66 pages
Authors:  Sartaj Sahni; FLORIDA UNIV GAINESVILLE
The full text of this report is available for sale.Under this award, the PI Dr. Sartaj Sahni, AFRL research scientist Dr. Gunasekaran Seetharaman, and University of Florida Ph.D. student Ms. Tania Banerjee-Mishra collaboratively researched TCAM (Ternary Content Addressable Memory) architectures for Internet packet classifiers. The objective was to develop low-energy high-performance TCAM architectures that supported both lookup and update. To this end, the architectures PC-DUOS, PC-DUOS+, and PC-TRIO were developed and evaluated. The first two of these use 2 ...


Secure, Robust and Flexible Computing Platform Jan 2012 9 pages
Authors:  Manish Parashar; RUTGERS - THE STATE UNIV PISCATAWAY NJ
The full text of this report is available for sale.The goals of this effort were to (1) develop an overall architecture that identifies key services and underlying protocols, (2) investigate the core network and system level requirements for supporting such a platform, (3) prototype key components and services that compose this infrastructure. This document presents progress on this effort and reports on the results.


Traffic-Aware Channel Allocation and Routing in Multichannel, Multi-Radio Wireless Networks Jan 2012 126 pages
Authors:  Vijay Raman; ILLINOIS UNIV AT URBANA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
The full text of this report is available for sale.Modern day wireless network applications exhibit varying service demands to satisfy user requirements, while differing in the nature of traffic they generate. Future wireless networks should, therefore, be capable of adapting to the heterogeneous traffic characteristics, by e efficiently utilizing the expensive radio resources. In this dissertation, we concentrate on three important problems in existing wireless networks and propose algorithms for addressing them. As the first problem, we focus on ...


ARO PECASE: Information Assurance for Energy-Constrained Wireless Sensor Networks 21 Dec 2011 193 pages
Authors:  Radha Poovendran; WASHINGTON UNIV SEATTLE OFFICE OF SPONSORED PROGRAMS
The full text of this report is available for sale.This is the final report for the ARO Presidential Early Career Award for Scientists and Engineers (PECASE) project entitled Information Assurance for Energy-Constrained Wireless Sensor Networks. A summary of the project outcomes is as follows. Six PhD students were fully or partially funded at the Network Security Lab (NSL), University of Washington: Mingyan Li (2006 At Boeing R&D), Loukas Lazos (2006, Assistant Professor at University of Arizona, received NSF CAREER ...


Large-Scale Online and Real-Time Optimization Problems under Uncertainty Dec 2011 7 pages
Authors:  Patrick Jaillet; MASSACHUSETTS INST OF TECH CAMBRIDGE
The full text of this report is available for sale.The main focus of our research is on the fundamental aspects of decision making in the context of uncertain (and possibly very large) data sets revealed in an online fashion. More specifically, we are interested in the intersection and interplay of three main phenomena -- incomplete and uncertain data, online decisions with or without real-time restrictions, and extremely large data sets -- and the corresponding fundamental questions when facing a ...


Analysis of U.S. Military Helicopter Operations in Support of Humanitarian Assistance and Disaster Relief Dec 2011 109 pages
Authors:  Thomas Clementson; Charles Fisher; NAVAL POSTGRADUATE SCHOOL MONTEREY CA GRADUATE SCHOOL OF BUSINESS AND PUBLIC POLICY
The full text of this report is available for sale.In recent years, the world has seen numerous natural disasters in which the U.S. military has played key roles in humanitarian assistance and disaster relief (HA/DR). A key component of HA/DR is to assure that relief is received through a timely and efficient logistics network. Sea basing is a vital aspect of U.S. military logistics abilities during relief efforts. The ability to launch and recover helicopters for humanitarian assistance from ...


DefAT: Dependable Connection Setup for Network Capabilities 23 Nov 2011 17 pages
Authors:  Soo Bum Lee; Virgil D Gligor; Adrian Perrig; CARNEGIE-MELLON UNIV PITTSBURGH PA CYLAB
The full text of this report is available for sale.Network-layer capabilities offer strong protection against link flooding by authorizing individual flows with unforgeable credentials (i.e., capabilities). However, the capability-setup channel is vulnerable to flooding attacks that prevent legitimate clients from acquiring capabilities; i.e., in Denial of Capability (DoC) attacks. Based on the observation that the distribution of attack sources in the current Internet is highly non-uniform, we provide a router-level scheme, named DefAT (Defense via Aggregating Traffic), that confines ...


Atmospheric Impacts Routing (AIR) Nov 2011 18 pages
Authors:  Jeffrey O Johnson; ARMY RESEARCH LAB WHITE SANDS MISSILE RANGE NM COMPUTATIONAL AND INFORMATION SCIENCES DIRECTORATE/BATTLEFIELD ENVIRONMENT DIV
The full text of this report is available for sale.Atmospheric impacts on platforms and alternative routing options which consider environmental factors along a planned path of movement are of high importance during combat operations. Such options serve to improve survivability and movement efficiency of air and ground platforms and systems. Environmental factors which may adversely affect systems during combat operations along a projected path include adverse weather, threat activity, conflicting friendly operations, and other obstacles. The U.S. Army Research ...


Integrated Information and Network Management for End-to-End Quality of Service Nov 2011 7 pages
Authors:  Marco Carvalho; Adrian Granados; Kyle Usbeck; Joseph Loyall; Matthew Gillen; Asher Sinclair; James P Hanna; RAYTHEON BBN TECHNOLOGIES CAMBRIDGE MA
The full text of this report is available for sale.Publish-subscribe-based Information Management (IM) services provide a key enabling technology for net-centric operations. This paper describes technology for Quality of Service (QoS) and Internet-Protocol-based Airborne Networking features for IM services. Enhancing IM services with airborne networking features improves effectiveness in combined tactical and enterprise networks with mobile airborne and ground-based embedded platforms interacting with enterprise systems in command and control operations.


Distributed Service Discovery within Mobile Ad Hoc Networks 20 Sep 2011 18 pages
Authors:  Joseph P Macker; Justin W Dean; Ronald D Lee; Robert B Adamson; Ian Taylor; Andrew Harrison; NAVAL RESEARCH LAB WASHINGTON DC
The full text of this report is available for sale.The potential for operating more mobile and dynamic networking infrastructures is raising new challenges in developing effective service registration and discovery technologies. Discovering and maintaining services within dynamic wireless networks is a challenge requiring novel mechanisms for more effective service detection, tracking, and adaptation. We discuss early prototyping of a service discovery framework based upon the service location protocol (SLP) called extended SLP (xSLP). xSLP has been applied within mobile ...


Probability of Flood-Induced Overtopping of Barriers in Watershed-Reservoir-Dam Systems 01 Sep 2011 14 pages
Authors:  Luis A de Bejar; ARMY CORPS OF ENGINEERS VICKSBURG MS ENGINEER RESEARCH AND DEVELOPMENT CENTER
The full text of this report is available for sale.An engineering methodology is developed to build hazard curves to evaluate the probability of flood-induced overtopping of barriers in watershed-reservoir-dam systems. The probable maximum precipitation in the watershed under consideration and its distribution in time during the acting storm is estimated. Considering the effects of the local geology, soil, topography, and land use, a random representation of the storm hourly rain is translated into effective runoff, including losses due to ...


Phoenix: Service Oriented Architecture for Information Management the Fawkes Cursor-on-Target Router Sep 2011 26 pages
Authors:  V Combs; J Hanna; T Krokowski; B Lipa; AIR FORCE RESEARCH LAB ROME NY INFORMATION DIRECTORATE
The full text of this report is available for sale.Cursor-on-Target (CoT) is a strategy for enabling DoD systems to communicate much needed time sensitive position or What, When, Where (WWW) information. CoT leverages the ubiquitous XML technology and defines a common, terse yet extensible message format for communicating WWW information. A data strategy akin to object oriented decomposition is used to define and manage extensions to the base WWW data. Using this approach CoT can easily and effectively represent ...


tRNA and Its Activation Targets as Biomarkers and Regulators of Breast Cancer Sep 2011 9 pages
Authors:  Tao Pan; Marsha Rosner; CHICAGO UNIV IL
The full text of this report is available for sale.Breast cancer refers to a variety of types that each derive from distinct causes and merit different treatments. It is crucial to develop new classes of molecules that target heretofore unexplored cellular mechanisms, so that tumors not responsive to current treatments might be responsive to new routes of therapy. We are exploring a previously under-appreciated avenue that can lead to precise identification of breast cancer sub-types to improve treatment options ...


Reliable Internet Routing Sep 2011 143 pages
Authors:  Martin Suchara; PRINCETON UNIV NJ
The full text of this report is available for sale.Network routing algorithms responsible for selecting paths to destinations have a profound impact on network reliability experienced by the network users. Unfortunately, performance of state-of-the-art routing algorithms often falls short of users' expectations. (i) The flexibility with which operators of independently administered networks can choose their routing policies allows them to make selections that are conflicting and may lead to route oscillations. Oscillating routes have a negative impact on performance ...


Minimizing Wide-Area Performance Disruptions in Inter-Domain Routing Sep 2011 115 pages
Authors:  Yaping Zhu; PRINCETON UNIV NJ
The full text of this report is available for sale.The Internet is the platform for most of our communications needs today. The networks underlying the Internet undergo continual change - both planned changes (e.g., adding a new router) or unplanned failures. Unfortunately, these changes can lead to performance disruptions, which affect the user experience. Because of this, network operators have to quickly diagnose and fix any problems that arise. Diagnosing wide-area performance disruptions is challenging: first, each network has ...


Performance Analysis of AeroRP with Ground Station Updates in Highly-Dynamic Airborne Telemetry Networks 03 JUN 2011 13 pages
Authors:  James P. Sterbenz; Hemanth Narra; Egemen K. Cetinkaya; AIR FORCE FLIGHT TEST CENTER EDWARDS AFB CA
The full text of this report is available for sale.Highly dynamic airborne telemetry networks pose unique challenges for data transmission. Domain-specific multi-hop routing protocols are necessary to cope with these challenges and AeroRP is one such protocol. In this paper, we discuss the operation of various AeroRP modes and analyze their performance using the ns-3 network simulator. We compare the performance of beacon, beaconless, and ground station (GS) modes of AeroRP. The simulation results show the advantages of having ...


ANTP Protocol Suite Software Implementation Architecture in Python 03 JUN 2011 12 pages
Authors:  James P. Sterbenz; Mohammed Alenazi; Santosh A. Gogi; Dongsheng Zhang; Egemen K. Cetinkaya; Justin P. Rohrer; AIR FORCE FLIGHT TEST CENTER EDWARDS AFB CA
The full text of this report is available for sale.Due to the highly-dynamic nature of airborne telemetry networks, we have developed the ANTP protocol suite consisting of AeroTP, AeroRP, and AeroNP. Having verified these protocols through simulation and analysis, the next step towards deployment of the ANTP suite is developing a cross-platform implementation of the protocols. Towards this end we present a preliminary architecture for the protocol stack to be implemented in the Python programming language. Initial development and ...


Performance Analysis of the AeroTP Transport Protocol for Highly-Dynamic Airborne Telemetry Networks 03 JUN 2011 13 pages
Authors:  James P. Sterbenz; Kamakshi S. Pathapati; Truc A. Nguyen; Justin P. Rohrer; AIR FORCE FLIGHT TEST CENTER EDWARDS AFB CA
The full text of this report is available for sale.Due to the challenging network conditions posed by a highly-dynamic airborne telemetry environment, it is essential for the transport protocol to provide automated mechanisms that dynamically adapt to changing end-to-end performance on any path. The AeroTP multi-mode transport protocol provides service tailored to the requirements of the telemetry mission control and data packets, achieving better performance compared to the traditional TCP and UDP. We use ns-3 to simulate the AeroTP ...


Use of Mahalanobis Distance for Detecting Outliers and Outlier Clusters in Markedly Non-Normal Data: A Vehicular Traffic Example JUN 2011 60 pages
Authors:  Rik Warren; Robert F. Smith; Anne K. Cybenko; SRA INTERNATIONAL INC DAYTON OH
The full text of this report is available for sale.Modeling the behavior of interacting humans in routine but complex activities has many challenges, not the least of which is that humans can be both purposive and negligent, and further can encounter unexpected environmental hazards requiring fast action. The challenge is to characterize and model the humdrum routine while at the same time capturing the deviations and anomalies which arise from time to time. Because of the disruptive impact that ...


WIPCast: Probabilistic Forecasting for Aviation Decision Aid Applications JUN 2011 46 pages
Authors:  Hyam Singer; IMPACT COMPUTING CORP SILVER SPRING MD
The full text of this report is available for sale.A fundamental shift in weather forecasting - to an approach that embraces probabilistic forecasting and forecast uncertainty - is crucial to advancing the science and utility of weather prediction. Toward that end, Impact Computing has teamed with the University of Washington's Department of Atmospheric Sciences to develop Weather Impact Probability Forecast (WIPCast) - a solution that builds upon the seminal work of Dr. Tony Eckel in the domain of probabilistic ...


The Impact of Long-Run CRAF Activation Risk on International Routes JUN 2011 68 pages
Authors:  Matthew G. Bland; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH DEPT OF OPERATIONAL SCIENCES
The full text of this report is available for sale.This research used publicly available data, collected by the U.S. Department of Transportation, on international flights from specific U.S. airports. In addition CRAF commitment data for each airline was compiled from Air Mobility Command. The aggregation of this data was used to create a model to predict risk scores based on the amount of aircraft committed to the CRAF and the type of aircraft being flown on specific routes. This ...


Tactical Network Integration Test Framework 16 May 2011 7 pages
Authors:  Lorraine Prior; Carl Fossa; David Ward; Jun Sun; Patrick Boehm; Edward Kuczynski; John Cain; Thomas Mak; MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
The full text of this report is available for sale.Mobile Ad-Hoc Networks (MANETs) will play a significant role in future tactical military networks. These tactical networks are required to support military operations and communications on-the-move in the mobile ad-hoc environment. They are also characterized by frequent changes in network topology, time varying bandwidth, interference and intermittent link blockage. The self-forming and self-healing nature of MANETs is therefore advantageous in a tactical military network. The DoD's evolving tactical network architecture ...


Sinkhole Avoidance Routing in Wireless Sensor Networks 09 May 2011 52 pages
Authors:  Andrew J Stephenson; NAVAL ACADEMY ANNAPOLIS MD
The full text of this report is available for sale.Wireless sensor networks, or WSNs, are an emerging commercial technology that may have practical applications on the modern battlefield. A wireless sensor network consists of individual sensor nodes that work cooperatively to collect and communicate environmental data. In a surveillance role, a WSN could be deployed across a geographic area of interest, allowing military commanders to monitor enemy troop positions and movements. Wireless sensor networks have enormous potential as an ...


Towards Modernizing the Electrical Grid May 2011 36 pages
Authors:  Gabriela F Ciocarlie; REAL-TIME INNOVATIONS INC SUNNYVALE CA
The full text of this report is available for sale.


Routing and Rate-Control for Coded Cooperation in a Satellite-Terrestrial Network 31 Mar 2011 7 pages
Authors:  Brooke Shrader; Thomas H Shake; Andrew P Worthen; MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
The full text of this report is available for sale.We address the problem of high-throughput, delay-constrained communication over a satellite-terrestrial network where terrestrial node mobility leads to intermittent links. Due to the short time-scale of the link durations in this scenario, standard single-path routing protocols are disadvantaged by the delay incurred In determining that a route is unavailable and then finding a new route. Instead we focus on the approach of sending data over multiple paths simultaneously, and use ...


The New Geography: The Map, The Satellite, and The Computer 23 Mar 2011 34 pages
Authors:  Kirby E Watson; ARMY WAR COLL CARLISLE BARRACKS PA
The full text of this report is available for sale.Geopolitics is a theory that describes the relationship between politics and territory. Geopolitics is a form of foreign policy analysis that seeks to understand, explain, and predict international political behavior in terms of geographic variables, such as the geographic location of the country or countries in question, size of the countries involved, climate of the region the countries are in, topography of the region, demography of the region, and natural ...


Fourth Generation Warfare in Chile: Illicit Drug Trafficking Threats 21 Mar 2011 40 pages
Authors:  Osvaldo Vallejos; ARMY WAR COLL STRATEGIC STUDIES INST CARLISLE BARRACKS PA
The full text of this report is available for sale.Since the end of the 20th Century, a range of nonconventional threats has been challenging the global community, including irregular conflicts, insurgencies, terrorism, and crime. The purpose of this research is to explore the risks of Fourth Generation Warfare (4GW) in Chile, and how its National Defense Strategy is prepared to face these threats with a specific focus on illicit drug trafficking. The paper reviews the theory and characteristics of ...


Adversarial Risk Analysis for Dynamic Network Routing 20 MAR 2011 60 pages
Authors:  David Banks; DUKE UNIV DURHAM NC OFFICE OF RESEARCH SUPPORT
The full text of this report is available for sale.Route selection in hostile terrain is a problem in adversarial risk analysis (ARA). This report summarizes work done to date that addresses the routing problem from the perspective of decision analysis, which takes account of both asymmetric uncertainties and the strategy of an intelligent opponent. The methodology is novel, and usefully different from traditional game theory or risk analysis. The main results of this funding are (1) a paper that ...


Central Command Rest and Recuperation Hub-to-Hub MAR 2011 91 pages
Authors:  John Dickens; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
The full text of this report is available for sale.The primary purpose of this research effort was to discover the efficiency and effectiveness of the historical hub-to-hub R&R airlift network. This study analyzed the hub-to-hub aircraft efficiency rates and introduced capacity changes in the airlift network with the use of Arena simulation to improve network performance. Furthermore, this study created simple heuristic options for the future airlift framework required to meet USCENTCOM's forecasted R&R transportation demand under the premise ...


Rate Control for Network-Coded Multipath Relaying with Time-Varying Connectivity 10 DEC 2010 12 pages
Authors:  Brooke Shrader; Armen Babikyan; Nathaniel M. Jones; Thomas H. Shake; Andrew P. Worthen; MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
The full text of this report is available for sale.This paper presents techniques for achieving high throughput in delay-constrained, multihop wireless communication networks with time-varying link connectivity. We develop a rate-controlled, multipath strategy using network coding, and compare its performance with that of multipath flooding and with the performance of traditional single-path strategies. These performance comparisons include both theoretical benchmarks and simulation results from cooperative relay scenarios, which incorporate different sets of link connectivity statistics that are drawn from ...


Exploring the Consequences of IED Deployment with a Generalized Linear Model Implementation of the Canadian Traveller Problem 30 NOV 2010 35 pages
Authors:  Stephen E. Fienberg; Andrew C. Thomas; CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF STATISTICS
The full text of this report is available for sale.The deployment of improvised explosive devices (IEDs) along major roadways has been a favored strategy of insurgents in recent war zones, both for the ability to cause damage to targets along roadways at minimal cost, but also as a means of controlling the flow of traffic and causing additional expense to opposing forces. Among other related approaches (which we discuss), the adversarial problem has an analogue in the Canadian Traveller ...


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