| Three-Dimensional Stable Nonorthogonal FDTD Algorithm with Adaptive Mesh Refinement for Solving Maxwell's Equations |
Mar 2013 |
23 pages |
| Authors:
Jinjie Liu; DELAWARE STATE UNIV DOVER
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 | The main objective of our effort is the development of stable, accurate and efficient Maxwell solvers. We focus on mathematical studies of the key unresolved issues in the Finite-Difference Time-Domain (FDTD) electromagnetic simulations. We have extended the subpixel smoothing FDTD method to material interface between dielectric and dispersive media by local coordinate rotation. A novel stable anisotropic FDTD algorithm based on the overlapping cells has been developed for solving Maxwell's ... |
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| 3-D Sound Propagation and Acoustic Inversions in Shallow Water Oceans |
19 Dec 2012 |
19 pages |
| Authors:
Ying-Tsong Lin; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
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| Underwater sound propagation in the continental shelf is complicated due to many threedimensional (3-D) oceanographic and marine geologic features, such as shelfbreak fronts, nonlinear internal gravity waves and topographic variability. The long-term goals of this project are targeted on understanding the 3-D sound propagation effects caused by these environmental factors, and also on applying the 3-D sound propagation physics to acoustic inversions. A verity of physical oceanographic processes and marine ... |
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| DOD Financial Management: Actions Needed to Address Deficiencies in Controls over Army Active Duty Military Payroll |
Dec 2012 |
39 pages |
| Authors:
Asif A Khan; Gayle L Fischer; Lauren S Fassler; Donald D Holzinger; Katherine Lenane; Sheila D Miller; Meg Mills; Heather L Rasmussen; GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
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| Why GAO Did This Study. In March 2012, GAO reported on challenges that DOD and the Army face in achieving audit readiness with respect to the over $45 billion in reported fiscal year 2010 Army active duty military payroll disbursements. In performing that work, GAO identified indications of possible weaknesses in selected processes, systems, and controls relied on to reasonably assure the validity and accuracy of reported Army active duty ... |
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| Improvements to Filter Debris Analysis in Aviation Propulsion Systems |
Dec 2012 |
83 pages |
| Authors:
Andrew Becker; Peter Stanhope; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION VICTORIA (AUSTRALIA) AIR VEHICLES DIV
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| The accurate analysis of metallic wear debris is fundamental to determining the health of aviation propulsion oil-wetted systems. The oil filter is an excellent source of wear debris, however methods for removing and assessing the debris have traditionally involved tedious visual examination of the filter pleats and manual counting of particles. This report describes two enhanced methods for extracting and assessing filter debris: the first method uses a manual extraction ... |
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| Evaluation of JSAF EM Propagation Prediction Methods for Navy Continuous Training Environment / Fleet Synthetic Training Results and Recommendations: Part 4 - JSAF Potential Improvements Cost/Benefits Analysis |
Dec 2012 |
14 pages |
| Authors:
Peter S Guest; Paul A Frederickson; Tom Murphree; Arlene A Guest; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF METEOROLOGY
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| In previous reports, the authors suggested several potential changes that would improve the realism and accuracy of JSAF range predictions for radar, communications and jamming systems. This report analyzes the estimated benefits and costs of implementing these and other potential changes to JSAF. This information is intended to be used a guide to help JSAF developers and managers prioritize which potential changes would provide the most benefits to JSAF users ... |
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| Evaluation of JSAF EM Propagation Prediction Methods for Navy Continuous Training Environment/Fleet Synthetic Training Results and Recommendations: Part 4 - JSAF Potential Improvements Cost/Benefit Analysis |
Dec 2012 |
14 pages |
| Authors:
Peter S Guest; Paul A Frederickson; Tom Murphree; Arlene A Guest; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| In previous reports, the authors suggested several potential changes that would improve the realism and accuracy of JSAF range predictions for radar, communications and jamming systems. This report analyzes the estimated benefits and costs of implementing these and other potential changes to JSAF. This information is intended to be used a guide to help JSAF developers and managers prioritize which potential changes would provide the most benefits to JSAF users ... |
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| Evaluation of JSAF EM Propagation Prediction Methods for Navy Continuous Training Environment / Fleet Synthetic Training, Results and Recommendations: Part 2 - Potential Improvements to Propagation Modeling within JSAF |
Dec 2012 |
16 pages |
| Authors:
Peter S Guest; Paul A Frederickson; Tom Murphree; Arlene A Guest; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Incorporating the Navy s Advanced Propagation Model (APM) into JSAF would greatly improve the EM range prediction accuracy, particularly for situations with strong refractive effects such as commonly occur in the Mideast and other locations. Many, but not all of the various physical effects on EM transmissions are already included in the APM model and therefore would not require development by NWDC. Because APM is the official OAML EM propagation ... |
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| Real-time Kinematics Base Station and Survey Unit Setup Method for the Synchronous Impulse Reconstruction (SIRE) Radar |
Dec 2012 |
20 pages |
| Authors:
Francois Koenig; Getachew Kirose; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
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| This report provides a description of the real-time kinematics (RTK) global positioning system (GPS) operation and setup procedure to provide real-time survey data for the Synchronous Impulse Reconstruction (SIRE) radar. These accurate position data allow proper real-time registration of surveyed points of interest with the SIRE radar imagery. |
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| Benchmarking Dutch and U.S. Naval Shipbuilding: Reducing U.S. Naval Shipbuilding Costs Using Collaborative PLM and 3D Imaging |
02 Nov 2012 |
100 pages |
| Authors:
Kevin Shannon; Thomas J Housel; Erik Jansen; Trent Silkey; NAVAL POSTGRADUATE SCHOOL MONTEREY CA GRADUATE SCHOOL OF OPERATIONAL AND INFORMATION SCIENCES
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| U.S. Navy shipbuilding contractors need to find a way to reduce costs without sacrificing current reliability and quality requirements. 3D Laser Scanning Technology (3D LST) and Collaborative Product Lifecycle Management (CPLM) are two technologies that are currently being leveraged by international ship construction organizations to achieve significant cost savings. 3D LST dramatically reduces the time required to scan ship surfaces as opposed to the traditional photogrammetry techniques currently used, but ... |
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| Human Factors In the Joint Typhoon Warning Center Watch Floor |
Nov 2012 |
57 pages |
| Authors:
Eva Regnier; Alex Kirlik; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| This study evaluates the task and support environments associated with the Joint Typhoon Warning Center (JTWC) watch floor and provides recommendations to improve forecast accuracy. The principal findings indicate that, at this time, factors in the task environment are very likely limiting forecast accuracy. In particular, system-induced practical and cognitive limits on the forecaster s repeatability, i.e., the ability to reproduce an identical forecast given identical information, limits forecast accuracy. ... |
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| Integrating Archaeological Modeling in DoD Cultural Resource Compliance |
26 Oct 2012 |
409 pages |
| Authors:
Paul R Green; Jeffrey H Altschul; Michael P Heilen; David W Cushman; Jeffrey A Homburg; Michael K Lerch; William E Hayden; Joshua R Trampier; SRI FOUNDATION RIO RANCHO NM
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| The purpose of Environmental Security Technology Certification Program (ESTCP) project RC-200720 was to (1) demonstrate that predictive models of archaeological site location are sufficiently accurate to serve as the foundation for programmatic approaches to compliance with the National Historic Preservation Act (NHPA) and the National Environmental Policy Act (NEPA) and (2) develop protocols for validating/refining predictive models and integrating them into the compliance process. The project involved two demonstration sites: ... |
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| The Predictability of Large-Scale, Short-Period Ocean Variability in the Philippine Sea and the Influence of Such Variability on Long-Range Acoustic Propagation |
15 Oct 2012 |
14 pages |
| Authors:
Brian Dushaw; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| The long-term goal of this project is a complete and accurate understanding of the properties of acoustic pulses sent over mesoscale to global scales. In particular, I want to understand the forward problem for calculating travel times of the early ray arrivals in long-range acoustic transmissions and to understand the sampling associated with those arrivals. The better the understanding of the forward problem, the better acoustic data can be used ... |
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| Neuroperformance Imaging |
Oct 2012 |
47 pages |
| Authors:
Seong K Mun; Linda Larson-Prior; Kenneth Wong; Alpay Ozcan; VIRGINIA POLYTECHNIC INST AND STATE UNIV BLACKSBURG OFFICE OF SPONSORED PROGRAMS
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| We have designed an appropriate PET imaging protocol that will allow us to differentiate regional metabolic activity between different sleep cycle periods. Pilot diffusion MRI data using phantoms has informed a new and more accurate mathematical model, CFD-MRI, for MR tractography. The analysis indicates the necessity of further investigations for better understanding and quantifying various artifacts in data collection. Using the simultaneous fMRI-EEG data techniques, brain regions of interest and ... |
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| Wave Height and Water Level Variability on Lakes Michigan and St Clair |
Oct 2012 |
183 pages |
| Authors:
Jeffrey A Melby; Norberto C Nadal-Caraballo; Yamiretsy Pagan-Albelo; Bruce Ebersole; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
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| The Great Lakes are subject to coastal flooding as a result of severe storms. Strong winds blowing across the surface of the lakes produce high waves and surge. Variations in lake levels due to decadal scale variations in precipitation and anthropogenic activities affect the risk of flooding. In this report, historical storm climatology on Lakes Michigan and St Clair, and the resulting measured waves and water levels, are analyzed in ... |
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| Evaluation of Androgen Receptor Function in Prostate Cancer Prognosis and Therapeutic Stratification |
Oct 2012 |
15 pages |
| Authors:
Albert Dobi; JACKSON (HENRY M) FOUNDATION BETHESDA MD
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| Initially prostate cancer development is driven by the male hormone androgen through the androgen receptor, however, in some patients androgen receptor becomes dysfunctional at late stages of tumorigenesis. Early knowledge of the androgen receptor dysfunctions, what would make prostate tumors refractory to routine androgen ablation therapy, should help in patient stratification for other emerging therapeutic strategies. We proposed a novel approach for evaluating potential dysfunctions of the androgen receptor by ... |
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| Near-infrared Spectroscopy to Reduce Prophylactic Fasciotomies for and Missed Cases of Acute Compartment Syndrome in Soldiers Injured in OEF/OIF |
Oct 2012 |
44 pages |
| Authors:
Brett Freedman; GENEVA FOUNDATION TACOMA WA
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| The research project is a three-part project to validate the accuracy and reliability of a specific NIRS sensor (Equanox, Nonin, Inc, Plymouth, MN) in diagnosing acute compartment syndrome in injured combat soldiers. Part 1 is a series of two observational studies, the first of which was completed at Landstuhl Regional Medical Center during year 1. The second clinical study was originally planned to be conducted in theatre in Afghanistan and ... |
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| Enhanced Multistatic Active Sonar via Innovative Signal Processing |
30 Sep 2012 |
9 pages |
| Authors:
Jian Li; FLORIDA UNIV GAINESVILLE DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
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| We seek to address two important signal processing aspects of multistatic active sonar systems, namely enhanced range-Doppler imaging and improved target parameter estimation. For the former, a hybrid dense-sparse method is considered to generate range-Doppler images with both low sidelobe levels and high accuracy. For the latter, a generalized K-Means clustering (GKC) method for target association is developed to associate the range measurements from different transmitter-receiver pairs, which is actually ... |
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| Application of Symbolic Regression to Electrochemical Impedance Spectroscopy Data for Lubricating Oil Health Evaluation |
27 Sep 2012 |
11 pages |
| Authors:
Carl S Byington; Nicholos A Mackos; Garrett Argenna; Andrew Palladino; Johan Reimann; Joel Schmitigal; ARMY TANK AUTOMOTIVE RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
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| The authors have applied an advanced set of auto-regressive tools for identifying potentially complex, linear and non-linear relationships in data, wherein the underlying physical relationships are not well described. In this paper these tools and techniques are described in detail, and the results of the application of these tools to evaluation of diesel engine lubricating oil health (based on electrochemical impedance spectroscopy data) is detailed. It is demonstrated that highly ... |
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| DoD Education Activity Needed Better Planning for Military Construction Projects |
24 Sep 2012 |
38 pages |
| Authors:
OFFICE OF THE INSPECTOR GENERAL (DEPARTMENT OF DEFENSE) ALEXANDRIA VA
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| We reviewed the Department of Defense Education Activity (DoDEA) requirements process for military construction (MILCON) projects in Europe. Specifically, we determined whether MILCON requirements for DoD Dependents Schools - Europe projects were accurate, reliable, and met DoDEA standards. In FY 2010, DoDEA began a major facilities renovation and construction initiative, valued at $3.7 billion. We reviewed the FY 2012 planned projects in Europe, which included six schools and a programmed ... |
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| Balancing Value and Risk in Information Sharing Through Obfuscation |
20 Sep 2012 |
9 pages |
| Authors:
Supriyo Chakraborty; Kasturi R Raghavan; Chatschik Bisdikian; Lance M Kaplan; IBM THOMAS J WATSON RESEARCH CENTER HAWTHORNE NY
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| Fast-paced data-to-decision systems are heavily dependent on the reliable sharing of sensor-derived information. At the same time a diverse collection of sensory information providers would want to exercise control over the information shared based on their perception of the risk of possible misuse due to sharing, and also depending on the consumer's requirements. To attain this utility vs. risk trade-off, information is subjected to varying but deliberate quality modifying transformations ... |
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| Spectral Approaches to Learning Predictive Representations |
Sep 2012 |
177 pages |
| Authors:
Byron Boots; CARNEGIE-MELLON UNIV PITTSBURGH PA SCHOOL OF COMPUTER SCIENCE
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| A central problem in artificial intelligence is to choose actions to maximize reward in a partially observable, uncertain environment. To do so, we must obtain an accurate environment model, and then plan to maximize reward. However, for complex domains, specifying a model by hand can be a time-consuming process. This motivates an alternative approach: learning a model directly from observations. Unfortunately, learning algorithms often recover a model that is too ... |
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| A Comparison of Earned Value and Earned Schedule Duration Forecast Methods on Department of Defense Major Defense Acquisition Programs |
Sep 2012 |
59 pages |
| Authors:
William J Bruchey; NAVAL POSTGRADUATE SCHOOL MONTEREY CA GRADUATE SCHOOL OF BUSINESS AND PUBLIC POLICY
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| Earned value management is a project management tool that integrates project scope with cost, schedule, and performance elements for optimum project planning and control. Earned value management is required by the Department of Defense for cost and incentive type contracts equal or greater than $20 million as part of a comprehensive approach to improving critical acquisitions. It is used to forecast the program's schedule performance using cost-based indicators but not ... |
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| Tropical Cyclone Reconnaissance Over the Western North Pacific with the Global Hawk: Operational Requirements, Benefits, and Feasibility |
Sep 2012 |
95 pages |
| Authors:
III Atkinson Robert E; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF METEOROLOGY
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| Over the North Atlantic Ocean, tropical cyclone (TC) reconnaissance is conducted by the U.S. Air Force with manned aircraft. However, no aircraft reconnaissance is conducted over the western North Pacific (WPAC), where the maximum annual number of TCs occur. Rather, remotely sensed observations from satellites provide data on TC characteristics in the WPAC. While operational forecasts of TC tracks over the WPAC have improved, the rate of improvement has declined. ... |
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| Improving Identification of Area Targets by Integrated Analysis of Hyperspectral Data and Extracted Texture Features |
Sep 2012 |
97 pages |
| Authors:
Corey F Bangs; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF INFORMATION SCIENCES
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| Hyperspectral data were assessed to determine the effect of integrating spectral data and extracted texture features on classification accuracy. Four separate spectral ranges (hundreds of spectral bands total) were used from the Visible and Near Infrared (VNIR) through the Short Wave Infrared (SWIR) portion of the electromagnetic spectrum. Haralick texture features (contrast, entropy, and correlation) were extracted from the average grey-level image for each range. A maximum likelihood classifier was ... |
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| Urban Classification Techniques Using the Fusion of LiDAR and Spectral Data |
Sep 2012 |
85 pages |
| Authors:
Justin E Mesina; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF INFORMATION SCIENCES
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| Combining different types of data from varying sensors has the potential to be more accurate than a single sensor. This research fused airborne LiDAR data and WorldView-2 (WV-2) multispectral imagery (MSI) data to create an improved classification image of urban San Francisco, California. A decision tree scenario was created by extracting features from the LiDAR as well as Normalized Difference Vegetation Index (NDVI) from the multispectral data. Raster masks were ... |
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| Transport Traffic Analysis for Abusive Infrastructure Characterization |
Sep 2012 |
93 pages |
| Authors:
Le E Nolan; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF COMPUTER SCIENCE
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| This thesis investigates a novel approach to identifying discriminating features of communications involving abusive hosts. The technique uses per-packet Transport Control Protocol (TCP) header and timing features to identify congestion, flow-control, and other low-level network and system characteristics. These characteristics are inherent to the poorly connected, under-provisioned, low-end, and overloaded hosts or links typical of abusive infrastructure, making them difficult for an adversary to manipulate. Supervised classifiers use these features ... |
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| Generating GraphML XML Files for Graph Visualization of Architectures and Event Traces for the Monterey Phoenix Program |
Sep 2012 |
225 pages |
| Authors:
Timothy L Shields; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Architecture, architecture modeling, and testing architecture models are key components of the software design process. The ability to design and visualize architecture models efficiently and accurately has a direct impact on the ability of designers to satisfy the requirements of their stakeholders. The Monterey Phoenix (MP) program is one such application for building executable architecture models. The MP program is used to build and test models based upon inter-related events ... |
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| Optimal Use of TDOA Geo-Location Techniques Within the Mountainous Terrain of Turkey |
Sep 2012 |
170 pages |
| Authors:
Volkan Tas; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Emitter location finding enables important functionality for both military and civilian applications. GPS is the most recognized and widely used positioning system, but it is a receiver location system that functions in a markedly different manner from emitter location. Many geo-location techniques predate and have been proposed as an alternative to GPS. Some of the more commonly used and exploited of these techniques are angle of arrival, time of arrival, ... |
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| Numerical Performance Prediction of a Miniature Ramjet at Mach 4 |
Sep 2012 |
131 pages |
| Authors:
Bingqiang Chen; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Using a 3-D axis-symmetric model, the cold-flow performance of a miniature ramjet in Mach 4 flow was predicted with the computational fluids dynamic (CFD) code from ANSYS-CFX. The nozzle-throat area was varied to increase the backpressure and this pushed the normal shock that was sitting within the inlet, out to the lip of the inlet cowl. Using the eddy dissipation combustion model in ANSYS-CFX, a combustion analysis was performed on ... |
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| Creating Network Attack Priority Lists by Analyzing Email Traffic With Predefined Profiles |
Sep 2012 |
98 pages |
| Authors:
Eric J Merritt; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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| Networks can be vast and complicated entities consisting of both servers and workstations that contain information sought by attackers. Searching for specific data in a large network can be a time consuming process. Vast amounts of data either passes through or is stored by various servers on the network. However, intermediate work products are often kept solely on workstations. Potential high value targets can be passively identified by comparing user ... |
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| Exploration of Data Fusion between Polarimetric Radar and Multispectral Image Data |
Sep 2012 |
85 pages |
| Authors:
William D Hall; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Typically, analysis of remote sensing data is limited to one sensor at a time which usually contains data from the same general portion of the electromagnetic spectrum. SAR and visible near infrared data of Monterey, CA, were analyzed and fused with the goal of achieving improved land classification results. A common SAR decomposition, the Pauli decomposition was performed and inspected. The SAR Pauli decomposition and the multispectral reflectance data were ... |
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| STARE CubeSat Communications Testing, Simulation and Analysis |
Sep 2012 |
63 pages |
| Authors:
III Le Gaux Clyde R; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The Space-based Telescope for the Actionable Refinement of Ephemeris (STARE) CubeSat will play an important role in contributing to this nation's space situational awareness (SSA), perhaps one day becoming an integral part of the space surveillance network (SSN) to track orbital debris and satellites, both active and inactive. STARE is a pathfinder mission that is expected to show that CubeSat assets can improve the accuracy of space debris ephemeris data ... |
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| Advanced Kinetic-Based Modeling Applied to Plasma and Neutral Flows |
Sep 2012 |
11 pages |
| Authors:
Andrew Ketsdever; Sergey Gimelshein; Jean-Luc Cambier; AIR FORCE RESEARCH LAB WRIGHT PATTERSON AFB OH HUMAN PERFORMANCE WING (711TH) HUMAN EFFECTIVENESS DIR/ BIOEFFECTS DIVISION
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| Summary: First step toward accurate modeling of FRC thruster with neutral entrainment Comparison of ionization and charge exchange reaction rates indicates that the use of nitrogen and especially xenon may be problematic, while neon appears to be a fairly good propellant. |
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| Lithospheric Models of the Middle East to Improve Seismic Source Parameter Determination/Event Location Accuracy |
Sep 2012 |
10 pages |
| Authors:
Rengin Gok; Stephen Herzog; Keith Nakanishi; Michael E Pasyanos; Rob J Mellors; Arthur J Rodgers; David B Harris; Eileen S Vergino; LAWRENCE LIVERMORE NATIONAL LAB CA
|
| The Middle East is a tectonically complex and seismically active region. The ability to accurately locate earthquakes and other seismic events in this region is complicated by tectonics, the uneven distribution of natural earthquakes and the fact that countries run separate national seismic networks without well-developed data-sharing agreements. We report here on a variety of scientific efforts to enhance knowledge of the lithospheric velocity structure in the Middle East, making ... |
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| Stress Intensity Solutions for Corner and Through-the-Thickness Cracks at a U-Shaped Notch (Preprint) |
Sep 2012 |
19 pages |
| Authors:
James A Harter; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH AEROSPACE SYSTEMS DIR
|
| Stress intensity factor solutions for corner and through cracks growing from a u-shaped edge notch are required to improve the accuracy of damage tolerance analyses for continuing damage scenarios. Closed-form K-solutions for through-the-thickness and corner cracks under remote axial loading were developed using 3-D finite element (FE) models for wide plates. Finite width corrections were determined based on FE models for a wide range of finite plate geometries. The finite ... |
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| Analysis of the Computer, Meteorological Data - Profiler's (CMD-P) Capability to Assimilate Regional Radiosonde Data |
Sep 2012 |
33 pages |
| Authors:
P Haines; J Cogan; T Jameson; J Swanson; ARMY RESEARCH LAB WHITE SANDS MISSILE RANGE NM
|
| The Product Manager (PM) for Meteorological and Target Identification Capabilities (MaTIC) developed a laptop-based version of the Meteorological Measuring Set-Profiler (MMS-P) that should replicate the capabilities of the latest currently fielded version, the MMS-P Block I ? Version 2 (B1v2). The laptop is a standard dual-processor VT Miltope CHS laptop. The B1v2 can generate all types of artillery meteorological (MET) messages. The PM funded the U.S. Army Research Laboratory (ARL) ... |
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| Tracking Subpixel Targets with Critically Sampled Optical Sensors |
Sep 2012 |
93 pages |
| Authors:
James T Lotspeich; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| In many remote sensing applications, the area of a scene sensed by a single pixel can often be measured in square meters. This means that many objects of interest in a scene are smaller than a single pixel in the resulting image. Current tracking methods rely on robust object detection using multi-pixel features. A subpixel object does not provide enough information for these methods to work. This dissertation presents a ... |
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| Capacity Building in the Operational Environment: Stories and Lessons Learned |
Sep 2012 |
196 pages |
| Authors:
Scott A Beal; Abigail Q Billington; Michael P Lerario; ARMY RESEARCH INST FOR THE BEHAVIORAL AND SOCIAL SCIENCES FORT BRAGG NC
|
| Building Partner Capacity (BPC) has emerged as a crucial, non-kinetic process for sustaining operational success, particularly in Afghanistan. As of this writing, there was no definition for BPC in U.S. Army documents that offered a clear and accurate representation of capacity building, as we found it during our research. Nor were there published field manuals specific to or systematic analyses of BPC. These knowledge and information gaps provided the impetus ... |
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| Structural Technology Evaluation and Analysis Program (STEAP). Delivery Order 0046: Multiscale Modeling of Composite Structures Subjected to Cyclic Loading |
Sep 2012 |
84 pages |
| Authors:
Caglar Oskay; VANDERBILT UNIV NASHVILLE TN
|
| This report documents four critical tasks concerned with the development and implementation of an advanced and novel modeling framework for predicting damage accumulation in composite structures undergoing monotonic and fatigue loadings. The critical tasks that have been completed are: 1. To enhance existing damage models to accurately capture the physics of failure of fiber-reinforced composites. 2. To develop a modeling technique that accurately captures damage accumulation due to cyclic loading. ... |
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| Military Disability System: Improved Monitoring Needed to Better Track and Manage Performance |
Aug 2012 |
83 pages |
| Authors:
Daniel Bertoni; Michele Grgich; Daniel Concepcion; Melissa Jaynes; Greg Whitney; Bonnie Anderson; James Bennett; Mark Bird; Joanna Chan; Brenda Farrell; GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
|
| Since 2007, DoD and Veterans Affairs (VA) have jointly operated the Integrated Disability Evaluation System (IDES) -- which is intended to expedite benefits for injured servicemembers. IDES replaced the departments' separate processes for evaluating servicemembers for fitness and disability. Initially a pilot at 3 military treatment facilities, IDES is now in place at military treatment facilities worldwide. In previous reports, GAO identified a number of challenges as IDES expanded to ... |
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| Cross-Correlation for Automated Stitching of Two-Dimensional Multi-Tile Electron Backscatter Diffraction Data (Preprint) |
Aug 2012 |
34 pages |
| Authors:
J S Tiley; A L Pilchak; P A Shade; D L Ballard; A R Shiveley; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH MATERIALS AND MANUFACTURING DIRECTORATE
|
| A method for automatically aligning consecutive datasets of large, two-dimensional multi-tile electron backscatter diffraction (EBSD) scans with high accuracy was developed. The method involves first locating grain and phase boundaries within search regions containing overlapping data in adjacent scan tiles, and subsequently using cross-correlation algorithms to determine the relative position of the individual scan tiles which maximizes the fraction of overlapping boundaries. Savitzky-Golay filtering in two dimensions was used to ... |
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| Defense Finance and Accounting Service Needs to Improve the Process for Reconciling the Other Defense Organizations' Fund Balance with Treasury |
09 Jul 2012 |
30 pages |
| Authors:
Amy J Frontz; DEPARTMENT OF DEFENSE ALEXANDRIA VA OFFICE OF THE INSPECTOR GENERAL
|
| We evaluated the adequacy of audit trails and assessed the Other Defense Organizations' (ODO) Fund Balance with Treasury (FBWT) reconciliation processes. This is one in a series of reports relating to the reconciliation of the ODO FBWT accounts. The first report concluded that the Cash Management Report (CMR) was not complete or accurate. We found that the Defense Finance and Accounting Service (DFAS) Indianapolis did not perform adequate, transaction-level reconciliations ... |
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| Correlated and Zonal Errors of Global Astrometric Missions: A Spherical Harmonic Solution |
Jul 2012 |
8 pages |
| Authors:
V V Makarov; B N Dorland; R A Gaume; G S Hennessy; C T Berghea; R P Dudik; H R Schmitt; NAVAL OBSERVATORY WASHINGTON DC
|
| We propose a computer-efficient and accurate method of estimating spatially correlated errors in astrometric positions, parallaxes, and proper motions obtained by space- and ground-based astrometry missions. In our method,the simulated observational equations are set up and solved for the coefficients of scalar and vector spherical harmonics representing the output errors rather than for individual objects in the output catalog. Both accidental and systematic correlated errors of astrometric parameters can be ... |
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| DoD Needs to Improve the Billing System for Health Care Provided to Contractors at Medical Treatment Facilities in Southwest Asia |
27 Jun 2012 |
45 pages |
| Authors:
Alice F Carey; DEPARTMENT OF DEFENSE ALEXANDRIA VA OFFICE OF THE INSPECTOR GENERAL
|
| The previous Commander, U.S. Central Command, requested this audit. Our objective was to follow up on the Department of Defense Office of Inspector General Report No. D-2009-078, Health Care Provided by Military Treatment Facilities to Contractors in Southwest Asia, May 4, 2009. In April 2011, DoD began billing contractors for health care provided in Southwest Asia; however, improvements to the billing system are needed. DoD officials took more than 5 ... |
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| Cross Hallway Detection and Indoor Localization Using Flash Laser Detection and Ranging |
14 Jun 2012 |
106 pages |
| Authors:
Istvan Prileszky; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| A flash LADAR is investigated as a source of navigation information to support cross-hallway detection and relative localization. To accomplish this, a dynamic, flexible simulation was developed that simulated the LADAR and the noise of a LADAR system. Using simulated LADAR data, algorithms were developed that were shown to be effective at detecting cross hallways in simulated ideal environments and in simulated environments with noise. Relative position was determined in ... |
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| Intra-procedural Path-insensitve Grams (I-GRAMS) and Disassembly Based Features for Packer Tool Classification and Detection |
14 Jun 2012 |
98 pages |
| Authors:
Scott E Gerics; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| The DoD relies on over seven million computing devices worldwide to accomplish a wide range of goals and missions. Malicious software, or malware, jeopardizes these goals and missions. However, determining whether an arbitrary software executable is malicious can be difficult. Obfuscation tools, called packers, are often used to hide the malicious intent of malware from anti-virus programs. Therefore detecting whether or not an arbitrary executable file is packed is a ... |
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| Next Generation Large Mode Area Fiber Technologies for High Power Fiber Laser Arrays |
08 Jun 2012 |
77 pages |
| Authors:
Almantas Galvanauskas; H Winful; Peter Dragic; E Honea; Stefan Heinemann; B Samson; MICHIGAN UNIV ANN ARBOR
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| This program has successfully accomplished its main objective in that large core single-mode Ge-doped and Yb-doped CCC fibers have been developed as a platform for monolithically-integrated building blocks (individual laser channels) of high power beam-combined fiber laser arrays. Robust single-mode performance of CCC fibers with core sizes of up to 60m has been rigorously demonstrated. Various CCC fiber based high power lasers have been also demonstrated, including 600W SBS-free single-frequency ... |
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| Altitude Estimation of Maneuvering Targets in MIMO Over-the-Horizon Radar |
Jun 2012 |
5 pages |
| Authors:
Yimin D Zhang; Moeness G Amin; Braham Himed; AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH SENSORS DIR
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| Target altitude estimation is an important problem in overthe-horizon radar (OTHR) systems for target tracking and classification. Narrow signal bandwidth and rich propagation environment in OTHR render this problem difficult and challenging. In this paper, we develop a novel technique that allows accurate altitude estimation for a maneuvering target during its ascending or descending flight. The proposed technique considers a multiple-input multiple-output (MIMO) OTHR platform and utilizes the difference in ... |
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| Internal Users and Uses of Financial Statements within the Federal Government |
Jun 2012 |
71 pages |
| Authors:
Rex T Aman; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| The purpose of this thesis is to determine the extent to which executives and program managers within the 24 major Chief Financial Officer (CFO) Act agencies utilize federal financial statements, contained within their Performance and Accountability Reports (PARs) or Agency Financial Reports (AFRs), to make better decisions or manage better. Studies to date indicate that most of the benefits have occurred within the financial management domain: better internal controls, improved ... |
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| Construction and Analysis of Multi-Rate Partitioned Runge-Kutta Methods |
Jun 2012 |
107 pages |
| Authors:
Patrick R Mugg; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| Adaptive mesh refinement (AMR) of hyperbolic systems allows us to refine the spatial grid of an initial value problem (IVP), in order to obtain better accuracy and improved efficiency of the numerical method being used. However, the solutions obtained are still limited to the local Courant-Friedrichs-Lewy (CFL) time-step restrictions of the smallest element within the spatial domain. Therefore, we look to construct a multi-rate time-integration scheme capable of solving an ... |
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