| Hybrid Techniques for Optimizing Complex Systems |
Dec-2009 |
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| Authors:
John P Hayes; Igor L Markov; MICHIGAN UNIV ANN ARBOR
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 | This is the final technical report for a three year research project on Hybrid Techniques for Optimizing Complex Systems conducted at the University of Michigan, Ann Arbor and sponsored by the Air Force Research Laboratory. The project's overall goal was to investigate novel hybrid techniques that combine concepts from quantum and classical computer science to solve hard computational problems, including the handling of uncertainty. The research problems considered include design ... |
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| Application of Quantum Chemical Approximations to Environmental Problems: Prediction of Water Solubility for Nitro Compounds |
10-Nov-2009 |
9 pages |
| Authors:
Mohammad Qasim; Jerzy Leszczynski; Yana A Kholod; Eugene N Muratov; Leonid G Gorb; Frances C Hill; Anatoly G Artemenko; Victor E Kuz'min; JACKSON STATE UNIV MS DEPT OF CHEMISTRY
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 | Water solubility values for 27 nitro compounds with experimentally measured values were computed using the conductor-like screening model for real solvent (COSMO-RS) based on the density functional theory and COSMO technique. We have found that the accuracy of the COSMO-RS approach for prediction of water solubility of liquid nitro compounds is impressively high (the errors are lower than 0.1 LU). However, for some solid nitro compounds, especially nitramines, there is ... |
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| Estimating Moving Targets Behind Reinforced Walls Using Radar |
Nov-2009 |
10 pages |
| Authors:
Arye Nehorai; Marija M Nikolic; Antonije R Djordjevic; WASHINGTON UNIV ST LOUIS MO DEPT OF ELECTRICAL AND SYSTEMS ENGINEERING
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| We consider the estimation of moving targets located behind concrete walls reinforced with metallic bars, using radar measurements. The periodic structure of the rebar severely attenuates and distorts transmitted waveforms, which produces defocused images with ghost target estimates. We apply beamforming to estimate permittivity and thickness of the wall and number and position of the targets. The proposed solution is based on accurate physical models calculated using the method of ... |
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| Testing MiniSTR Primers for Addition to a PCR-Based Forensic Specimen Identification Protocol |
Nov-2009 |
10 pages |
| Authors:
Dennis Burian; Doris M Kupfer; Laura Guzman; CENTRAL OKLAHOMA UNIV EDMOND OK
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| An assay has been developed for polymerase chain reaction (PCR)-based human identity testing using the Federal Bureau of Investigation's human Combined DNA Identity System (CODIS) primers. Recent forensic literature has identified difficulties using these primers due to amplicon size and the degraded nature of DNA from forensic samples. Primers termed mini Short-Tandem Repeat (STR) primers targeted to the same loci as the CODIS primers but which have smaller amplicons have ... |
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| Comparisons of Monthly Mean 10 M Wind Speeds from Satellites and NWP Products Over the Global Ocean |
09-Oct-2009 |
15 pages |
| Authors:
Charlie Barron; E J Metzger; Alan J Wallcraft; Ahmet B Kara; R Pauley; M Bourassa; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
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| The accuracy of wind speed at 10 m above the sea surface from two satellite and three numerical weather prediction (NWP) products is investigated over the global ocean. Rain-free equivalent neutral winds from the Quick Scatterometer (QuikSCAT) are converted to stability-dependent winds to be consistent with those from NWP products and are taken as truth in comparisons to winds from other products. Quantitative statistical analyses presented at each grid point ... |
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| CAMUS: Automatically Mapping Cyber Assets to Mission and Users (PREPRINT) |
Oct-2009 |
8 pages |
| Authors:
Jason K Kopylec; John R Goodall; APPLIED VISIONS INC NORTHPORT NY
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| This research advances Cyber Situation Management by proposing methods for automated mapping of Cyber Assets to Missions and Users (CAMUS). To enable accurate and efficient cyber incident mission impact assessment, a CAMUS ontology that defines entities, relationships and attributes (ERAs) associated with them has been drafted. Methods for fusing data from multiple data sources have been developed alongside an ontology-based system to populate the model using existing network data sources. ... |
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| Scalable Emulation of TinyOS Applications in Heterogeneous Network Scenarios |
Oct-2009 |
11 pages |
| Authors:
Rajive Bagrodia; Yi-Tao Wang; CALIFORNIA UNIV LOS ANGELES DEPT OF COMPUTER SCIENCE
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| Simulating the behavior of sensor applications in a heterogeneous network or under diverse environmental conditions is particularly challenging. In this paper, we present the design and implementation of TiQy, a scalable framework that allows unmodified TinyOS applications to be evaluated in a diverse set of operating conditions, including heterogeneous networks. We validate TiQ against MoteLab, a physical sensor network testbed, and show that TiQ can predict the behavior of the ... |
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| Unified Regional Tomography and Source Moment Tensor Inversions Based on Finite-Difference Strain Green Tensor Databases |
30-Sep-2009 |
11 pages |
| Authors:
Wei Zhang; Xiaoping Yang; Yang Shen; Li Zhao; Zhigang Zhang; SCIENCE APPLICATIONS INTERNATIONAL CORP SAN DIEGO CA
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| Seismic monitoring requires accurate source characterization in real time. Accurate 3D earth models are essential for accurate predictions of seismic observables and source characterization. While recovering the true earth structure has always been the goal of tomographic inversions, methods based on full wavefields in 3D reference models have several distinct advantages. Made possible by advances in high-performance computation, this full-wave approach accounts for complex wave propagation in 3D heterogeneous earth, ... |
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| Congressional Gridlock, Town Hall Vitriol...and the Information Environment |
10-Sep-2009 |
3 pages |
| Authors:
Dennis M Murphy; ARMY WAR COLL CARLISLE BARRACKS PA CENTER FOR STRATEGIC LEADERSHIP
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| Speed, access to news, connectivity.... The information age, as Thomas Friedman likes to remind us, has made the world flat. From many perspectives, that's good news. You can access news from anywhere, at any time with a click of a mouse. You have the capability to watch literally hundreds of television channels, in multiple languages from the comfort of your couch. You can listen to rock, jazz, metal or classical ... |
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| A Tracer Analysis for the M1002 Training Projectile |
Sep-2009 |
20 pages |
| Authors:
James Garner; Xaiogang Huang; Jason Mishock; John Kostka; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
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| Testing to qualify the M1002 round was conducted in FY08. The M1002 round has met its accuracy requirements as a training round to replace the M831A1. The present configuration achieves acceptable performance but could be improved. This report provides an understanding of some of the tracer's launch conditions, which are important in determining what might be done to further improve tracer performance. |
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| Leveraging Social Media to Engage the Public in Homeland Security |
Sep-2009 |
130 pages |
| Authors:
Jody Woodcock; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF NATIONAL SECURITY AFFAIRS
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| We live in disparate times. There seems to be an increase in the occurrence of natural disasters and acts of terrorism, creating an increased dependence on government services and emergency responders. By contrast, public safety budgets are shrinking and there are fewer resources to address this greater, widespread need. The answer may be what homeland security officials have yet to do - engage the public as a full partner. A ... |
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| Consolidated Tactical Network Analysis for Optimizing Bandwidth: Marine Corps Support Wide Area Network (SWAN) and TCP Accelerators |
Sep-2009 |
144 pages |
| Authors:
Shane Jenson; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF INFORMATION SCIENCES
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| In 2004, the Support Wide Area Network (SWAN) system added significant capability to the way Marines communicate on the battlefield. Today, the SWAN system is still a critical segment in Marine communications and the TCP accelerator is being evaluated for a potential upgrade. Due to the rapid nature of the SWAN procurement process, in-depth testing procedures have never been established for this system. As a result, there are no procedures ... |
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| Development of the Phase Synchronization Circuit for Wirelessly Distributed Digital Phased Array |
Sep-2009 |
129 pages |
| Authors:
Yen-Chang Tsai; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| The Wirelessly Distributed Digital Phased Array (WDDPA) is an ongoing research program at the Naval Postgraduate School (NPS) which has numerous possible applications in radar and communication systems. The WDDPA incorporates many array elements randomly or nonuniformly in the environment or on a platform. Array elements are synchronized and controlled over a wireless channel. Compared to conventional phased array systems, its advantages are adaptability, survivability and flexibility. Phase synchronization is ... |
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| Designing a Sensorless Torque Estimator for Direct Torque Control of an Induction Motor |
Sep-2009 |
87 pages |
| Authors:
Athanasios Tsoutsas; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
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| Nowadays, transportation is a major cause of air pollution. Electric propulsion could replace the internal combustion engines of automobiles and reduce the emission of exhaust gases. The propulsion of an electric vehicle requires the design of an accurate electromagnetic torque estimator and an efficient control system in order to control the speed of the vehicle. This concept is conveyed through this thesis. An electromagnetic torque calculator of an induction motor ... |
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| Reengineering of the Defense Biometric Identification System (DBIDS) Equipment Tracking Database |
Sep-2009 |
210 pages |
| Authors:
W T Young; Dalton H Clarke; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| The Defense Manpower Data Center (DMDC) manages the Defense Biometric Identification System (DBIDS). DBIDS captures personal and biometric information to manage DoD-wide access, control, and personnel accountability. DBIDS equipment is installed globally, and managed by a central office on the Monterey peninsula. Program managers track data about the numbers and type of equipment installed at each site. Program managers were tracking DBIDS data using a single Microsoft Excel workbook comprised ... |
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| An Information-Centric Approach to Autonomous Trajectory Planning Utilizing Optimal Control Techniques |
Sep-2009 |
296 pages |
| Authors:
Michael A Hurni; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF MECHANICAL AND ASTRONAUTICAL ENGINEERING
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| This work introduces a new information-centric pseudospectral optimal control-based algorithm for autonomous trajectory planning and control of unmanned ground vehicles with real-time information updates. It begins with a comprehensive study and comparison of the various path planning methods currently in use. It then provides an analysis of the optimal control method, including vehicle and obstacle modeling techniques, several different problem formulations, and a number of important insights on unmanned ground ... |
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| Surface Wind Field Analyses of Tropical Cyclones During TCS-08: Relative Impacts of Aircraft and Remotely-Sensed Observations |
Sep-2009 |
98 pages |
| Authors:
Patrick J Havel; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF METEOROLOGY
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| The objective of this research is to investigate tropical cyclone wind field structure and development utilizing comprehensive observation sets collected during the Tropical Cyclone Structure 2008 (TCS-08) and The Observing System Research and Predictability Experiment (THORPEX) Pacific Asian Regional Campaign (T-PARC). Rare aircraft measurements in the western North Pacific are utilized to define surface wind distributions of TY Nuri, TY Sinlaku, and STY Jangmi. Stepped Frequency Microwave Radiometer (SFMR) surface ... |
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| Multiscale Computations of Microcracking Solids |
08-Jul-2009 |
9 pages |
| Authors:
Ted Belytschko; NORTHWESTERN UNIV EVANSTON IL
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| New multiscale methods have been developed for the study of microcracking and dislocations. The multiscale method for microcracking aggregates the effect of an arbitrary number of cracks at the micro level into a single equivalent crack at the macrolevel. The methodology is based on the concept of a perforated unit cell, which excludes all subdomains of the unit cell where the material loses stability in the averaging operations. We have ... |
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| Calibration of an Orthogonal Cluster of Magnetic Sensors |
Jul-2009 |
34 pages |
| Authors:
Andrew A Thompson; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE
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| This report interprets least-squares estimation as a magnetic sensor calibration procedure. The procedure demonstrated can be applied to any inner product type of sensor element to calibrate a single sensor or multisensor unit. The accuracy of the estimates can be quantified. In addition to scale factor and bias, the within-unit alignment and the alignment to a given coordinate system can be estimated. |
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| A Review of Methods for Moving Boundary Problems |
Jul-2009 |
27 pages |
| Authors:
C E Kees; M W Farthing; R C Berger; T C Lackey; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
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| State-of-the-art numerical methods for solving moving boundary problems arising from multiphase flow and fluid-structure interaction modeling are reviewed. The emphasis of the review is on robust methods that do not require the mesh to conform to the moving boundary. The impetus for this review is the Coastal and Hydraulics Laboratory's mission in navigation. Accurately predicting the effect of a vessel on a waterway and the vessel motion are required to ... |
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| The Use of a Context-Based Information Retrieval Technique |
Jul-2009 |
58 pages |
| Authors:
Agata McCormac; Kathryn Parsons; Marcus Butavicius; Simon Dennis; Lael Ferguson; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA) COMMAND CONTROL COMMUNICATIONS AND INTELLIGENCE DIV
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| Since users are faced with an ever increasing amount of data, fast and effective retrieval of required information is of vital importance. This aim of this study was to examine whether the results provided by a keyword-based technique would be improved through the use of two Latent Semantic Analysis (LSA) techniques. Participants were required to highlight query terms from within documents; one LSA technique utilized the sentence of the query ... |
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| Modeling of Low-Speed Rarefied Gas Flows Using a Combined ES-BGK/DSMC Approach (Preprint) |
04-Jun-2009 |
14 pages |
| Authors:
Andrew Ketsdever; Sergey Gimelshein; Nathaniel Selden; Natalia Gimelshein; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
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| Modeling of low speed gas flows at moderate Knudsen numbers, where conventional continuum CFD methods are inapplicable and kinetic methods are either inaccurate or prohibitively expensive, presents a significant challenge for computational modeling. In this work, an approach that combines a finite-volume solution of the ES-BGK model kinetic equation and the statistical DSMC method to accurately predict radiometric forces on a vane in large vacuum chamber filled with rarefied gas ... |
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| Point Density Effects on Digital Elevation Models Generated from LiDAR Data |
Jun-2009 |
73 pages |
| Authors:
Richard L Duldulao; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| The use of Airborne LiDAR Systems (ALS) to obtain topographical information of the earth's surface and generate Digital Elevation Models (DEMs) has grown extensively in the field of Remote Sensing. Selected areas of point cloud LiDAR data collected from Honduras in 2008 was used to produce DEMs with varying densities to show the effects of lower resolution LiDAR data. An IDL code was utilized to reduce the selected LiDAR point ... |
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| Cross-Domain Network Fault Localization |
Jun-2009 |
135 pages |
| Authors:
William D Fischer; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Prior research has focused on intra-domain fault localization leaving the cross-domain problem largely unaddressed. Faults often have widespread effects, which if correlated, could significantly improve fault localization. For both competitive and security reasons, domain managers hesitate to share fault observations even when doing so may significantly ease fault localization. This dissertation presents a characterization of the problem space in terms of inference accuracy, privacy, and scalability, and provides a framework ... |
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| Efficacy of Various Waveforms to Support Geolocation |
Jun-2009 |
185 pages |
| Authors:
Crnkovich; Joseph G Jr; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| This thesis investigates the impact of various waveform parameters on the ability to estimate accurately the position of the source of a known data-less emission that is visible to multiple simultaneous collectors. It provides an overview of the basic geolocation problem and identifies various parameters affecting geolocation accuracy, showing those that are affected by the waveform and those that are not. Performance estimates are provided for detecting the signal and ... |
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| Accuracy Analysis for Kinetic Modeling of Homogeneous Condensation in Plumes |
Jun-2009 |
6 pages |
| Authors:
Sergey Gimelshein; Deborah Levin; Ingrid Wysong; Ryan Jansen; Michael Zeifman; Zheng Li; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
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| Two different approaches for modeling the clustering in rapidly expanding plumes have been reported in the literature. The first approach, known as the classical approach, takes its starting point from the classical nucleation theory (CNT) which is based on equilibrium thermodynamics. The second one, known as the kinetic approach, treats nucleation as the process of kinetic chemical aggregation. The first, macroscopic, approach, while being useful and found to be applicable ... |
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| Shifting the Paradigm of Trauma Medicine to Positively Influence Critical Mortality Rates Following a Mass Casualty Event |
Jun-2009 |
97 pages |
| Authors:
Dana L Hall; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Medical providers, patients, and their families have always been able to enjoy the abundance of U.S. society. When medical resources exceed the demand for care, all necessary medical resources are used to improve the health or save the life of each individual. However, the health care system in the U.S. is severely under-prepared to care for hundreds to thousands of victims simultaneously from a mass casualty event (MCE). The influx ... |
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| British Military Mission (BMM) to Greece, 1942-44 |
21-May-2009 |
51 pages |
| Authors:
S S Shrader; ARMY COMMAND AND GENERAL STAFF COLL FORT LEAVENWORTH KS SCHOOL OF ADVANCED MILITARY STUDIES
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| The study of insurgency and counterinsurgency over the years provides a valuable tool for analysis in the current Global War on Terrorism. Failure to take into account and accurately assess political and military actions in such environments can lead to unintended consequences (potential civil war) affecting the stability of a country. Accurate assessment of the political and military actions does not guarantee success or failure, as every insurgency is a ... |
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| Speed Versus Accuracy: A Zero Sum Game |
11-May-2009 |
29 pages |
| Authors:
Jeffrey L Scott; ARMY WAR COLL CARLISLE BARRACKS PA
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| Accuracy maintains the required credibility for an effective information strategy. Speed provides current, relevant information to inform and influence key populations. The requirement and role of speed and accuracy create a zero sum game in information strategy. With the importance of information in today's irregular warfare environment, an effective information strategy is based on decentralization. Operations planned and conducted and the daily interactions of the units and Soldiers on the ... |
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| A Study of Alternative Modeling Techniques of Attrition of First-term Navy Enlisted Sailors |
May-2009 |
27 pages |
| Authors:
J S Johnson; Jerry C Crabb; NAVY PERSONNEL RESEARCH STUDIES AND TECHNOLOGY MILLINGTON TN
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| The purpose of this study was to examine enlisted Navy first-term attrition. Sailors who exit the Navy before completing the end of their first term of enlistment are a lost investment of direct costs (training) and indirect costs (force stability). The ability to predict individuals that are likely to attrite, and to accurately forecast the percentage of the force that is likely to leave early can potentially allow the Navy ... |
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| The 2010 Decennial Census: Background and Issues |
27-Apr-2009 |
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| Authors:
Jennifer D Williams; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
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| On Census Day, April 1, 2010, the Bureau of the Census will fulfill the constitutional mandate for an enumeration of the U.S. population every 10 years. The Bureau's task has been summarized with deceptive simplicity: count each person whose usual residence is in the United States; count the person only once; and count him or her at the right location. In reality, the attempt to find all U.S. residents and ... |
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| Identification of Helicon Plasma via Radial Magnetic Field Profiles (Preprint) |
07-Apr-2009 |
20 pages |
| Authors:
William Lewis; Michael P Reilly; George H Miley; AIR FORCE RESEARCH LAB EDWARDS AFB CA PROPULSION DIRECTORATE
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| The propagation of Helicon waves in 5 cm cylindrical plasma has been identified by radial Bz magnetic field profiles. These profiles are correlated with radial plasma density profiles which show a transition from a broad uniform density distribution during inductive plasma to centrally peaked profile during helicon wave propagation. Additionally, the matching network circuit parameters have been analyzed to show a sharp drop in reflected power when the discharge supports ... |
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| Using Computational Cognitive Modeling to Predict Dual-Task Performance with Sleep Deprivation |
Apr-2009 |
12 pages |
| Authors:
Glenn Gunzelmann; Kevin A Gluck; Moore; L R Jr; Michael D Byrne; AIR FORCE RESEARCH LAB MESA AZ HUMAN EFFECTIVENESS DIRECTORATE
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| The effects of fatigue on multiple-task performance were explored through computational cognitive modeling. Fatigue typically has a negative impact on human performance. Biomathematical models exist that characterize the dynamics of human alertness, but the link between alertness and in situ performance on specific tasks is tenuous. Cognitive architectures offer a principled means of establishing that link. We implemented mechanisms for fatigue, which produce microlapses in cognitive processing, into an existing ... |
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| Secure Information Sharing in a Defense Support to Civil Authorities Environment |
12-Mar-2009 |
34 pages |
| Authors:
Eugene T Gormley; ARMY WAR COLL CARLISLE BARRACKS PA
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| In the past few years, Defense Support to Civil Authorities (DSCA) has become a more important mission for the military services, especially the National Guard. In the aftermath of events such as 9/11, Hurricane Katrina and others, the federal and state governments have recognized the importance of timely and accurate information sharing to support pre-event planning and effective response during an event. Another key issue facing Chief Information Officers (CIOs) ... |
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| Increasing Information Sharing Among Independent Police Departments |
01-Mar-2009 |
117 pages |
| Authors:
Phillip L Sanchez; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| The events of September 11, 2001, clearly demonstrated the need for law enforcement agencies at the local, state, and federal levels to increase their capacity to share information with one another. The 9/11 Commission asserted that the World Trade Center attacks occurred, in part because law enforcement was unable to connect the dots, which may have provided the opportunity to disrupt the terrorists? mission. However, upon reflection and further investigation ... |
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| Global War on Terrorism: DOD Needs to More Accurately Capture and Report the Costs of Operation Iraqi Freedom and Operation Enduring Freedom |
Mar-2009 |
37 pages |
| Authors:
Eric Petersen; Deanna Laufer; Linda La Due Keefer; Ron Lake; Richard Geiger; Lonnie McAllister; Sharon Pickup; Susan Ditto; Ann Borseth; Joseph Rutecki; GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
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| Since September 11, 2001, Congress has provided about $808 billion to the Department of Defense (DoD) for the Global War on Terrorism (GWOT) in addition to funding in DoD's base budget. Prior GAO reports have found DoD's reported GWOT cost data unreliable and found problems with transparency over certain costs. In response, DoD has made several changes to its cost-reporting procedures. Congress has shown interest in increasing the transparency of ... |
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| Combat Identification Modeling Using Neural Networks Techniques |
Mar-2009 |
119 pages |
| Authors:
Changwook Lim; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
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| The purposes of this research were: (1) validating Kim's (2007) simulation method by applying analytic methods and (2) comparing the two different Robust Parameter Design methods with three measures of performance (label accuracy for enemy, friendly, and clutter). Considering the features of CID, input variables were defined as two controllable (threshold combination of detector and classifier) and three uncontrollable (map size, number of enemies and friendly). The first set of ... |
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| A Theoretical Model Analysis of Absorption of a Three level Diode Pumped Alkali Laser |
Mar-2009 |
116 pages |
| Authors:
Lewis; Charlton D II; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
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| This paper models the absorption phenomena of light in a three level diode pumped alkali laser system. Specifically this model calculates for a user defined set of system parameters the attenuation of the input pump beam and characteristics of the bleached wave. Using Wolfram's Mathematical 6.0 software all necessary physics for an accurate description of absorption was modeled from first principles: energy levels, cross sections, spin-orbit kinetic processes, saturation frequencies, ... |
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| Predicting Solar Protons: A Statistical Approach |
Mar-2009 |
94 pages |
| Authors:
Jonathan C Spaulding; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT/DEPT OF ENGINEERING PHYSICS
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| A small fraction of solar flares are accompanied by high energy (10 MeV) protons. These events can cause degradation or failure of satellite systems and can be harmful to humans in space or in high altitude flight. For risk management purposes, the Air Force is interested in predicting these events. Several algorithms exist to do this operationally, but none predict when these events will occur with much accuracy. Here, we ... |
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| Assessment of Weather Sensitivites and Air Force Weather (AFW) Support to Tactical Lasers in the Lower Troposphere |
Mar-2009 |
83 pages |
| Authors:
Francesco J Echeverria; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT/DEPT OF ENGINEERING PHYSICS
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| ATL scientists need to develop a full understanding of the interaction effects between a high-energy laser beam and the atmosphere through which it propagates. Achieving this understanding is important for many reasons. In particular, the high cost of DE weapons systems makes each propagation event expensive. Having an understanding of the atmosphere in which a high-energy laser propagates will increase efficiency and effectiveness of the ATL weapon system, which in ... |
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| Using Agent-Based Modeling to Evaluate UAS Behaviors in a Target-Rich Environment |
Mar-2009 |
93 pages |
| Authors:
van; Joseph A Kuiken; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
|
| The trade-off between accuracy and speed is a re-occurring dilemma in many facets of military performance evaluation. This is an especially important issue in the world of ISR. One of the most progressive areas of ISR capabilities has been the utilization of Unmanned Aircraft Systems (UAS). Many people believe that the future of UAS lies in smaller vehicles flying in swarms. We use the agent-based System Effectiveness and Analysis Simulation ... |
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| Depth Derivation from the Worldview-2 Satellite Using Hyperspectral Imagery |
Mar-2009 |
69 pages |
| Authors:
Loomis; Michael J Jr; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| The Worldview-2 satellite, scheduled for launch in 2009, will have a multispectral sensor with several additional spectral bands not available on current multispectral sensors. This research investigates the use of the additional yellow spectral band to derive bathymetry. A hyperspectral image acquired from the AVIRIS sensor was used as a substitute image for the Worldview-2 multispectral sensor. The image was processed using the Stumpf et al. (2003) ratio method to ... |
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| A Framework for Analyzing Biometric Template Aging and Renewal Prediction |
Mar-2009 |
168 pages |
| Authors:
John W Carls; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Biometric technology and systems are modernizing identity capabilities. With maturing biometrics in full, rapid development, a higher accuracy of identity verification is required. An improvement to the security of biometric-based verification systems is provided through higher accuracy; ultimately reducing fraud, theft, and loss of resources from unauthorized personnel. With trivial biometric systems, a higher acceptance threshold to obtain higher accuracy rates increase false rejection rates and user unacceptability. However, maintaining ... |
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| Estimation of Weapon Yield From Inversion of Dose Rate Contours |
Mar-2009 |
138 pages |
| Authors:
Buckley E O'Day; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
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| This research studies the uncertainty in yield estimation from inversion of dose rate contours. The Hazard Prediction and Assessment Capability (HPAC) and a simple FORTRAN95 based Fallout Deposition Code (FDC) are used to recreate dose rate contours from historic nuclear tests. Fallout footprints from six atomic tests are recreated using balloon wind soundings and high resolution mesoscale weather reanalysis data. Dose rate contour plots are created for different yields for ... |
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| Suite of Standards for Electromagnetic Material Characterization Using Mode Matching Theory |
Mar-2009 |
114 pages |
| Authors:
Brian Witthoeft; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
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| The objective of this research is to determine if an acceptable standard can be developed to access the accuracy and precision of measurements taken using waveguide systems. Tiny changes in material fabrication, processing, and environment can cause problems with accuracy and precision in measurement. There is a great deal of research on uncertainty analysis in the literature. A large portion of the effort will be to determine the levels of ... |
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| Fusion of Inertial Sensors and Orthogonal Frequency Division Multiplexed (OFDM) Signals of Opportunity for Unassisted Navigation |
Mar-2009 |
65 pages |
| Authors:
Jason G Crosby; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
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| The advent of the global positioning system (GPS) has provided worldwide high-accuracy position measurements. However, GPS may be rendered unavailable by jamming, disruption of satellites, or simply by signal shadowing in urban environments. Thus, this thesis considers fusion of Inertial Navigation Systems (INS) and Orthogonal Frequency Division Multiplexed (OFDM) signals of opportunity (SOOP) for navigation. Typical signal of opportunity navigation involves the use of a reference receiver and uses time ... |
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| Cost Forecasting Models for the Air Force Flying Hour Program |
Mar-2009 |
104 pages |
| Authors:
Tyler J Hess; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| The fiscally constrained environment in which the Air Force executes its mission places great emphasis on accurate cost estimates for planning and budgeting purposes. Inaccurate estimates result in budget risks and undermine the ability of Air Force leadership to allocate resources efficiently. This thesis evaluates the current method used by the Air Force and introduces new methods to forecast future Flying Hour Program costs. The findings suggest the current forecasting ... |
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| Real-Time Tracking of Implanted Markers During Radiation Treatment by Use of Simultaneous kV and MV Imaging |
Mar-2009 |
70 pages |
| Authors:
Rodney D Wiersma; STANFORD UNIV CA SCHOOL OF MEDICINE
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| In the presence of organ motion, geometric target uncertainty can hamper the benefits of highly conformal dose techniques such as IMRT. A critical step in dealing with intra-fraction prostate tumor motion is the real-time monitoring of the tumor position. The aim of this investigation is the first time demonstration of a real-time 3D internal fiducial tracking system based on onboard kV diagnostic imaging together with a MV electronic portal-imaging device ... |
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| Transrectal Near-Infrared Optical Tomography for Prostate Imaging |
Mar-2009 |
93 pages |
| Authors:
Daqing Piao; OKLAHOMA STATE UNIV STILLWATER
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| The objective of this research is to explore the technology of trans-rectal near-infrared (NIR) optical tomography for accurate, selective prostate biopsy. Prostate cancer is the most common non-dermatologic cancer in American men. Prostate cancer suspicion is typically based on an elevated serum prostate-specific antigen (PSA) level or a suspicious nodule found during a digital rectal exam (DRE). When the PSA level is elevated or the DRE shows abnormal, there is ... |
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| DoD Cost of War Reporting of Supplemental Funds Provided for Procurement and Research, Development, Test, and Evaluation |
27-Feb-2009 |
71 pages |
| Authors:
Richard B Jolliffe; INSPECTOR GENERAL DEPT OF DEFENSE ARLINGTON VA
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| We reviewed the processes that comptroller personnel in the Office of the Secretary of Defense, Army, Navy, Air Force, Marine Corps, and Defense Finance and Accounting Service-Indianapolis (DFAS-IN) used to prepare sections of the cost of war report pertaining to procurement and research, development, test, and evaluation funds to determine whether management effectively prepared those reports. We determined that the Office of the Under Secretary of Defense (Comptroller)/DoD Chief Financial ... |
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