| Testing Properties of Boolean Functions |
Jan 2012 |
165 pages |
| Authors:
Eric Blais; CARNEGIE-MELLON UNIV PITTSBURGH PA SCHOOL OF COMPUTER SCIENCE
|
 | Given oracle access to some boolean function f, how many queries do we need to test whether f is linear? Or monotone? Or whether its output is completely determined by a small number of the input variables? This thesis studies these and related questions in the framework of property testing introduced by Rubinfeld and Sudan ('96). The results of this thesis are grouped into three main lines of research. I. ... |
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| Robust Functionality and Active Data Management for Cooperative Networks in the Presence of WMD Stressors |
Sep 2011 |
27 pages |
| Authors:
Majeed Hayat; Patrick G Bridges; Yasamin Mostofi; Patricia Crowley; NEW MEXICO UNIV REGENTS ALBUQUERQUE
|
| In this project , we have begun the development of a rigorous probabilistic framework enabling new understanding and control of distributed networks vulnerabilities to WMD-induced failures. We have developed a general stochastic queuing model and performed basic analysis to characterize the statistics of the task completion time treated as a random variable. Using the developed framework, we have established a theoretical/computational optimization tool that maximizes a network's robustness to node/link ... |
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| Analytically Quantifying Gains in the Test and Evaluation Process through Capabilities-Based Analysis |
Sep 2011 |
107 pages |
| Authors:
Eric J Lednicky; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OPERATIONS RESEARCH
|
| Military operating environments are increasingly diverse and technically challenging. Fielding relevant weapons systems to meet the demands of this environment is increasingly difficult, prompting policy shifts that mandate a focus on systems capable of combating a wide threat range. The Capabilities-Based Test and Evaluation (CBT&E) construct is the Department of the Navy's effort to concentrate on integrated system design with the objective of satisfying a particular operational response (capability) under ... |
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| Asset Allocation to Cover a Region of Piracy |
Sep 2011 |
31 pages |
| Authors:
Marc West; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA) MARITIME OPERATIONS DIV
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| Piracy in the Gulf of Aden and the waters around Somalia has increased in recent years, with international naval assets allocated to patrol at-risk areas. This paper compares measures of area coverage in situations where there is a uniform piracy risk and where some areas are more vulnerable than others. Simulated annealing was used to allocate the patrolling naval assets. The novel problem of positioning a coalition of ships whilst ... |
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| A Scientific Approach To STEM Education |
16 JUN 2011 |
34 pages |
| Authors:
Carl Wieman; OFFICE OF SCIENCE AND TECHNOLOGY POLICY WASHINGTON DC
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| This report looks at the status of science, technology, engineering and mathematics (STEM) education in the United States and what could be done better. |
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| Change the Equation (trademark): Solving America's Innovation Problem |
15 JUN 2011 |
19 pages |
| Authors:
CHANGE THE EQUATION WASHINGTON DC
|
| These briefing charts discuss the theme "education to innovate"--to improve participation and performance of America's students in the Naval STEM (Science, Technology, Engineering and Math) program and the mobilization of the business community to improve the quality of STEM learning in the United States. Organizational goals and characteristics are discussed. |
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| Strengthening the STEM Education & Workforce Pipeline: Insights from the BHEF U.S. STEM Education Model Led to the STEM Higher Education and Workforce Project |
15 JUN 2011 |
14 pages |
| Authors:
BUSINESS-HIGHER EDUCATION FORUM WASHINGTON DC
|
| Business-Higher Education Forum's STEM Initiative seeks to answer two questions: Could we double the number of college graduates in the STEM disciplines in 10 years? What would be the highest leverage strategies to achieve this goal? |
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| A Topological Model for C2 Organizations |
JUN 2011 |
54 pages |
| Authors:
Andre L. Uruguay; Carlos H. Ribeiro; INSTITUTE FOR ADVANCED STUDIES SAO JOSE DOS CAMPOS (BRAZIL)
|
| One essential function in Command is to determine roles, responsibilities and relationships, in order to enable, encourage and constrain certain behaviors. In the context of the complex endeavors expected to happen in the near future, this means to establish a collection of organizations that are fit for the missions. On the other hand, in recent years the mathematical field of Topology has been applied to solve several problems of multiagent ... |
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| Automatic Target Recognition: Statistical Feature Selection of Non-Gaussian Distributed Target Classes |
JUN 2011 |
149 pages |
| Authors:
Matthew J. Wilder; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
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| Target and pattern recognition systems are in widespread use. Efforts have been made in all areas of pattern recognition to increase the performance of these systems. Feature extraction, feature selection, and classification are the major aspects of a target recognition system. This research proposes algorithms for selecting useful statistical features in pattern/target classification problems in which the features are non-Gaussian distributed. In engineering practice, it is common to either not ... |
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| Applications of the Schur Basis to Quantum Algorithms |
10 JAN 2011 |
138 pages |
| Authors:
Isaac Chuang; Aram Harrow; MASSACHUSETTS INST OF TECH CAMBRIDGE
|
| Quantum computation offers a promising avenue to high performance computing, for certain applications, but depends on development of new quantum algorithms. Thus far, all major quantum algorithms which are exponentially fast compared with classical counterparts are based on the quantum Fourier transform. This project seeks to develop new quantum algorithms, based on a different mathematical transform known as the Schur transform. The Schur transform (or Schur-Weyl duality) arises naturally in ... |
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| Solving Two-Level Optimization Problems with Applications to Robust Design and Energy Markets |
Jan 2011 |
223 pages |
| Authors:
Sauleh A Siddiqui; MARYLAND UNIV COLLEGE PARK
|
| This dissertation provides efficient techniques to solve two-level optimization problems. Three specific types of problems are considered. The first problem is robust optimization, which has direct applications to engineering design. Traditionally robust optimization problems have been solved using an inner-outer structure, which can be computationally expensive. This dissertation provides a method to decompose and solve this two-level structure using a modified Benders decomposition. This gradient-based technique is applicable to robust ... |
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| Partial Leading in Pursuit and Evasion Games |
Dec 2010 |
13 pages |
| Authors:
Chris Arney; Elisha Peterson; MILITARY ACADEMY WEST POINT NY DEPT OF MATHEMATICAL SCIENCES
|
| Pursuit and evasion games encompass a large class of games in which one or more pursuers attempt to find and/or capture one or more evaders . These games have immense practical importance, yet their mathematics is not fully-understood outside of a limited number of simple cases. This paper introduces PursuitSim, a simulation platform for pursuit and evasion games in which the user interactively explores these games by dynamically adjusting algorithm ... |
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| State University of New York Institute of Technology (SUNYIT) Summer Scholar Program |
Oct-2009 |
23 pages |
| Authors:
Deborah J Tyksinski; STATE UNIV OF NEW YORK AT ALBANY RESEARCH FOUNDATION
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| The Research Foundation, for and on behalf of SUNY Institute of Technology (SUNYIT), has contributed significant research capability and capacity to the in-house program at AFRL through the placement of highly motivated and accomplished faculty members and undergrad/graduate students pursuing advanced degrees in Engineering, Computer Science, Mathematics and other recognized technical disciplines critical to the advancement of Information Technologies. The program supported and enhanced the existing AFRL/Information Institute Summer Faculty ... |
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| The Center for Advanced Systems and Engineering (CASE). Visiting Faculty Research Program 06 March 2007 to 05 March 2009 |
Sep-2009 |
23 pages |
| Authors:
Hopkins; Robert C Jr; SYRACUSE UNIV NY OFFICE OF SPONSORED PROGRAMS
|
| The Center for Advanced Systems and Engineering (CASE), for and on behalf of Syracuse University, has provided the services for managing the Air Force Research Laboratory Information Directorate Visiting Faculty Research Program and Summer Faculty Fellowship Program. The CASE will place highly qualified and motivated faculty members and graduate students (M.S. and Ph.D.) in science, technology, engineering and mathematics (STEM) disciplines as well as other recognized technical and newly emerges ... |
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| The Timing of Social Comparison in Crowds |
18-Aug-2009 |
29 pages |
| Authors:
Natalie Fridman; Gal A Kaminka; BAR-ILAN UNIV RAMAT-GAN (ISRAEL) COMPUTER SCIENCE DEPT
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| Models of crowd behavior facilitate analysis and prediction of the behavior of large groups of people, who are affected by each other's presence and actions. For instance, in defense and security applications, generative models of crowd behaviors are used for decision-support, simulation, and training. Most existing approaches for modeling crowd behavior have focused on algorithmic and mathematical approaches, which generate simulations which are qualitatively or visually appealing, but have not ... |
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| Giselle: A Mutually Orthogonal Triple Twin-loop Ground-symmetrical Broadband Receiving Antenna for the HF Band |
Jul-2009 |
|
| Authors:
W Martinsen; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA) COMMAND CONTROL COMMUNICATIONS AND INTELLIGENCE DIV
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 | This report describes development of a tri-axial mutually orthogonal broadband twin-loop receiving antenna for the HF band. The three twin-loops have been arranged so that they exhibit the same distributed parameters between themselves and ground. The upper frequency limit of the antenna is discussed and a method for extending the low frequency cut-off is presented. The antenna noise factor is calculated from measured data. |
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| Multi-Channel and Multi-Dimensional Sensors Parametric Statistics Estimation |
Jun 2009 |
|
| Authors:
Jr Marple S L; OREGON STATE UNIV CORVALLIS SCHOOL OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE
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| Parametric estimation, when expressed in the form of AR models, linear prediction analysis, lattice filters or minimum variance adaptive filters, has been a major foundation for enhanced signal processing performance. Examples include high resolution spectral analysis, linear prediction coding for bit rate reduction, and enhanced detection statistic performance for space-time adaptive processing (STAP) using parametric forms of the inverse covariance matrix. The mathematical matrix structures of most parametric estimators are ... |
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| America COMPETES Act and the FY2010 Budget |
13-Apr-2009 |
|
| Authors:
Deborah D Stine; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| The America COMPETES Act (P.L. 110-69) became law on August 9, 2007. The act responds to concerns that the United States may not be able to compete economically with other nations in the future due to insufficient investment today in science and technology research and science, technology, engineering, and mathematics (STEM) education and workforce development. The America COMPETES Act is intended to increase the nation's investment in science and engineering ... |
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| U.S. Civilian Space Policy Priorities: Reflections 50 Years After Sputnik |
02-Feb-2009 |
|
| Authors:
Deborah D Stine; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| The ?space age? began on October 4, 1957, when the Soviet Union (USSR) launched Sputnik, the world's first artificial satellite. Some U.S. policymakers, concerned about the USSR's ability to launch a satellite, thought Sputnik might be an indication that the United States was trailing behind the USSR in science and technology. The Cold War also led some U.S. policymakers to perceive the Sputnik launch as a possible precursor to nuclear ... |
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| Frequency Jump Detection and Analysis |
01-Dec-2008 |
15 pages |
| Authors:
W J Riley; HAMILTON TECHNICAL SERVICES BEAUFORT SC
|
| The detection of jumps in a frequency record is a challenging problem by either visual or mathematical means. The former takes considerable experience and judgment, and is therefore quite subjective, but has the advantage of providing insight into device behavior. The latter is more impartial and consistent, and can be automated. In combination, mathematical jump detection can be applied for automatic clock testing and monitoring. If a jump is detected, ... |
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| Blended Inverse Kinematics: Delta3D System Utilization |
DEC 2008 |
10 pages |
| Authors:
Michael Guerrero; Chris Darken; NAVAL POSTGRADUATE SCHOOL MONTEREY CA MODELING VIRTUAL ENVIRONMENTS AND SIMULATION (MOVES)
|
| Traditional inverse kinematics systems are riddled with issues that make their use in real-time simulations prohibitive. Foremost, the computational costs associated with these methods are too high to make their widespread use practical. Furthermore, their usage typically results in the synthesis of animations that fail to impart the sense of weight and timing that would be present in either motion captured or artist created forward kinematic animation. This is a ... |
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| Evaluating Real-Time Platforms for Aircraft Prognostic Health Management Using Hardware-In-The-Loop |
Aug-2008 |
10 pages |
| Authors:
Mitch Wolff; Michael Corbett; Michael Boyd; Peter Lamm; Tommy Baudendistel; KRAUSE (P C) AND ASSOCIATES WEST LAFAYETTE IN
|
| Aircraft power demands continue to increase with the increase in electrical subsystems. These subsystems directly affect the behavior of the power and propulsion systems and can no longer be neglected or assumed linear in system analyses and prognostic health management (PHM) schemes. The complex models designed to integrate new capabilities have a high computational cost. Hardware-in-the-loop (HIL) is being used to investigate aircraft power systems by using a combination of ... |
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| Internet Topology Generation Based on Reverse-Engineered Design Principles: Performance Tradeoffs Between Heuristic and Optimization-Based Approaches |
01-Jun-2008 |
91 pages |
| Authors:
Jonathan A Derosier; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The global Internet is a federation of computer networks that are owned and operated by Internet Service Providers (ISPs). Because ISPs do not share topology information for competitive and privacy reasons, researchers, operators, and policy makers who want to assess the performance and reliability of the system as a whole must infer structure from limited measurement data. We use reverse-engineering to infer underlying design principles of a national ISP and ... |
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| Intelligent Information Systems Institute |
01-Jun-2008 |
20 pages |
| Authors:
Carla P Gomes; CORNELL UNIV ITHACA NY
|
| The Intelligent Information Systems Institute began operation in December of 2000. Its mandate is threefold: To perform and stimulate research in computer and data-intensive methods for intelligent decision making systems; to foster collaborations between Cornell researchers, AFRL, in particular IF, and the scientific community; and to play a leadership role in the research and dissemination of the core areas of the institute. IISI supports basic research within the Faculty of ... |
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| The America COMPETES Act and the FY2009 Budget |
22 MAY 2008 |
|
| Authors:
Deborah D. Stine; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| The America COMPETES Act (P.L. 110-69) responds to concerns that the United States may not be able to compete economically with other nations in the future due to insufficient investment today in science and technology research and in science, technology, engineering, and mathematics (STEM) education. A similar concern led President Bush to announce the American Competitiveness Initiative (ACI) in January 2006. In March 2008, both the House and Senate included ... |
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| The America COMPETES Act and the FY2009 Budget |
20 MAR 2008 |
|
| Authors:
Deborah D. Stine; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| The America COMPETES Act (P.L. 110-69) responds to concerns that the United States may not be able to compete economically with other nations in the future due to insufficient investment today in science and technology research and in science, technology, engineering, and mathematics (STEM) education. A similar concern led President Bush to announce the American Competitiveness Initiative (ACI) in January 2006. In March 2008, both the House and Senate included ... |
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| Software Obfuscation With Symmetric Cryptography |
01-Mar-2008 |
108 pages |
| Authors:
Alan C Lin; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Software protection is of great interest to commercial industry. Millions of dollars and years of research are invested in the development of proprietary algorithms used in software programs. A reverse engineer that successfully reverses another company's proprietary algorithms can develop a competing product to market in less time and with less money. The threat is even greater in military applications where adversarial reversers can use reverse engineering on unprotected military ... |
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| America COMPETES Act: Programs, Funding, and Selected Issues |
22 JAN 2008 |
|
| Authors:
Deborah D. Stine; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| On August 2, 2007, Congress passed the America COMPETES(Creating Opportunities to Meaningfully Promote Excellence in Technology Education and Science) Act (H.R. 2272), which the President signed into law (P.L. 110-69) on August 9, 2007. The act responds to concerns that the United States may not be able to compete economically with other nations in the future due to insufficient investment today in science and technology research and science, technology, engineering, ... |
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| Auction Theory and Its Potential Use in the Army Aviation Bonus System |
DEC 2007 |
75 pages |
| Authors:
Tony K. Verenna; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The United States Army is increasing its force by 65,000 troops over the next few years. Included in this increase are Army aviators. Retention of the current soldiers in uniform is becoming very difficult as the deployment schedule of the current Global War on Terrorism wears down the individual aviator. Army Aviation is included in this build up of forces yet it must also compete with the amount of jobs ... |
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| Development of Multi-Adaptive Simulation Technologies for Nonlinear Solid Polymer Viscoelasticity |
31 OCT 2007 |
61 pages |
| Authors:
J. R. Whiteman; M. K. Warby; Simon Shaw; BRUNEL UNIV UXBRIDGE (UNITED KINGDOM)
|
| This project has been concerned with the reliable computation of engineering Quantities of Interest (QoI), and the application of these mathematical methods to problems of interest to the US Army (informed by our long-standing contact with Dr A R Johnson, ARL, VTD, LaRC). In the project we have applied state-of-the-art mathematical theory to a practical large deformation engineering problem in membrane inflation. In doing this we have applied modern methods ... |
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| Mathematical Approach to the Evaluation and Planning of Influence Operations |
OCT 2007 |
24 pages |
| Authors:
Richard A. Albanese; Jennifer Duffie; L-3 COMMUNICATIONS SAN ANTONIO TX INTELLIGENCE SOLUTIONS DIV
|
| According to U.S. Air Force Concept of Operations for Information Operations, Influence Operations "employ capabilities to affect behaviors, protect operations, communicate commander's intent, and project accurate information to achieve desired effects across the targeting domain. These effects should result in differing behavior or a change in the adversary decision cycle, which aligns with the commander's objectives." Specific events involved in Influence Operations are Psychological Operations (PSYOP), military deception, counterintelligence, and ... |
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| Oscillations of a Multi-String Pendulum |
14 SEP 2007 |
152 pages |
| Authors:
A. Dendis; F. A. Papoulias; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The mathematical pendulum is one of the most widely studied problem in engineering physics. This is, however, primarily limited to the classical pendulum with a single bar and mass configuration. Extensions to this include multi-degree of freedom systems, but many of the classical assumptions, such as a single bar per mass, are preserved. Several designs used in practice utilize multiple or trapezoidal configurations in order to enhance stability. Such designs ... |
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| Wavelet Approach to Data Analysis, Manipulation, Compression, and Communication |
07 AUG 2007 |
16 pages |
| Authors:
Charles K. Chui; MISSOURI UNIV-ST LOUIS
|
| The main objective of our research program over the past three-year period is three-fold: firstly, mathematical theories and methods, as well as construction of basis functions, for multi-level approximation and analysis, with emphasis on scattered data interpolation and representation, were developed; secondly, based on minimum-energy criteria, new data processing tools, particularly variational algorithms and optimal wavelet thresholding methods, with applications to image restoration, were introduced; and finally, these developments were ... |
|
| Federal Support for Research and Development |
JUN 2007 |
42 pages |
| Authors:
Sheila Campbell; CONGRESSIONAL BUDGET OFFICE (U S CONGRESS) WASHINGTON DC
|
| New knowledge and continuing innovation have been major factors in increasing economic well-being. Private businesses are the largest sponsors of research and development (R&D) in the United States, producing the discoveries that in turn lead to new products and services and the growth of productivity; however, the federal government has long provided significant support for R&D activities to both supplement and encourage private efforts. The government finances research and development ... |
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| Foreign Students in the United States: Policies and Legislation |
11 MAY 2007 |
|
| Authors:
Chad C. Haddal; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| Five years after the September 11, 2001, terrorist attacks by foreign nationals -- including several terrorists on student visas -- the security concerns over foreign student visas are being weighed against competitiveness concerns. Potential foreign students, as well as all aliens, must satisfy Department of State (DOS) consular officers abroad and immigration inspectors upon entry to the United States that they are not ineligible for visas under the so-called "grounds ... |
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| Classical Method for Deriving the Electromagnetic Propagation Equations for Double Negative Materials With Application for Antenna Design |
FEB 2007 |
28 pages |
| Authors:
Ira Kohlberg; KOHLBERG ASSOCIATES INC RESTON VA
|
| We derive a system of propagation equations in a Double Negative (DN) material in a way that appears to differ from previous derivations although the end result is the same. Our derivation assumes the Poynting vector theorem applies, real materials always have some loss, epsilon(omega) and mu(omega) are obtained from real materials, and wave energy traveling in a specified direction must always be accompanied by a loss of energy in ... |
|
| U.S. National Science Foundation: An Overview |
24 JAN 2007 |
|
| Authors:
Christine M. Matthews; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| The National Science Foundation (NSF) was created by the National Science Foundation Act of 1950, as amended (P.L. 81-507). The NSF has the broad mission of supporting science and engineering in general and funding basic research across many disciplines. The agency provides support for investigator-initiated, merit-reviewed, competitively selected awards, state-of-the-art tools, and instrumentation and facilities. The majority of the research supported by the NSF is conducted at U.S. colleges and ... |
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| Numerical Calculations for Passive Geolocation Scenarios |
JAN 2007 |
|
| Authors:
Don Koks; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA) ELECTRONIC WARFARE AND RADAR DIVISION
|
| This report reviews work done in gaining some familiarity with methods of passive geolocation, and a search for rules of thumb that might tell us how to optimize the geolocation for a given scenario. We first cover the main approaches to collecting angle of arrival data and point out typical accuracies. Following this is an account of the mathematics used to analyze this data to produce an estimate of an ... |
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| Standardizing on Ontology of Physics for Modeling and Simulation (MSIAC Journal, Volume 4, December 2006) |
Dec-2006 |
8 pages |
| Authors:
Joseph B Collins; NAVAL RESEARCH LAB WASHINGTON DC ADVANCED INFORMATION TECHNOLOGY
|
| Interest in creating various scientific markup languages has been stimulated by the advent of XML and OWL. For example, there is a need for an ontology of physics for representing physics based model semantics in Modeling and Simulation (M&S) applications. While basic principles have been outlined to proceed towards creating such an ontology, the difficulties in creating a standardized ontology lie in the magnitude of the task and the diversity ... |
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| Regularization for Inverting the Radon Transform with Wedge Consideration (PREPRINT) |
NOV 2006 |
6 pages |
| Authors:
I. Aganj; A. Bartesaghi; M. Borgnia; H. Y. Liao; G. Sapiro; S. Subramaniam; MINNESOTA UNIV MINNEAPOLIS INST FOR MATHEMATICS AND ITS APPLICATIONS
|
| In limited angle tomography, with applications such as electron microscopy, medical imaging, and industrial testing, the object of interest is scanned over a limited angular range, which is less than the full 180 deg mathematically required for density reconstruction. The use of standard full-range reconstruction algorithms produces results with notorious "butter-fly" or "wedge" artifacts. In this work we propose a reconstruction technique with a regularization term that takes into account ... |
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| Complex Networks |
NOV 2006 |
98 pages |
| Authors:
John Doyle; CALIFORNIA INST OF TECH PASADENA CONTROL AND DYNAMICAL SYSTEMS
|
| CHALLENGES IN THE NS REPORT: 1. Dynamics, spatial location, and information propagation in networks. 2. Modeling and analysis of very large networks. 3. Design and synthesis of networks. 4. Increasing the level of rigor and mathematical structure. 5. Abstracting common concepts across fields. 6. Better experiments and measurements of network structure. 7. Robustness and security of networks. * ORGANIZED COMPLEXITY SUMMARY: 1. Complex systems are robust yet fragile, with unavoidable ... |
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| Review and Appraisal of the Federal Investment in STEM Education Research |
06 OCT 2006 |
107 pages |
| Authors:
Daniel B. Berch; Diana I. Cordova; Janice M. Earle; Barbara A. Humes; Barbara M. Olds; Jonathan Levitt; Mary F. Sladek; EXECUTIVE OFFICE OF THE PRESIDENT WASHINGTON DC NATIONAL SCIENCE AND TECHNOLOGY COUNCIL
|
| The STEM Education Research report provides a review and appraisal of the federal investment in science, technology, engineering, and mathematics (STEM) education research, along with recommendations for strengthening the federal research portfolio in this area. Among other objectives, a major goal of the report is to stimulate the development of federal research agendas both within and among agencies that will lead to the strengthening of our knowledge base in this ... |
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| Phenomenology-Based Inverse Scattering for Sensor Information Fusion |
15 SEP 2006 |
34 pages |
| Authors:
Kung-Hau Ding; AIR FORCE RESEARCH LAB HANSCOM AFB MA SENSORS DIRECTORATE
|
| Fusion of sensor and communication data currently can only be performed at a late processing stage after sensor and textual information are formulated as logical statements at appropriately high level of abstraction. Contrary to this it seems, the human mind integrates sensor and language signals seamlessly, before signals are understood, at preconceptual level. Learning of conceptual contents of the surrounding world depends on language and vice versa. This paper uses ... |
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| Central Discontinuous Galerkin Methods on Overlapping Cells with a Non-Oscillatory Hierarchical Reconstruction |
30 AUG 2006 |
23 pages |
| Authors:
Yingjie Liu; Chi-Wang Shu; Eitan Tadmor; Mengping Zhang; MARYLAND UNIV COLLEGE PARK MD CENTER FOR SCIENTIFIC COMPUTATIONAL AND MATHEMATICAL MODELING
|
| The central scheme of Nessyahu and Tadmor [J. Comput. Phys, 87 (1990)] solves hyperbolic conservation laws on a staggered mesh and avoids solving Riemann problems across cell boundaries. To overcome the difficulty of excessive numerical dissipation for small time steps, the recent work of Kurganov and Tadmor [J. Comput. Phys, 160 (2000)] employs a variable control volume, which in turn yields a semi-discrete non-staggered central scheme. Another approach, which we ... |
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| Complex Processes in Electrochemical Systems |
01 AUG 2006 |
9 pages |
| Authors:
Henry A. Catherino; ARMY RESEARCH DEVELOPMENT AND ENGINEERING COMMAND WARREN MI
|
| The study of the individual components comprising a physical system is a necessary first step for understanding the behavior of the system. However, when the individual components are brought together, unexpected consequences have a way of taking place that were not anticipated by the studies on the individual components. This is usually the consequence of the union of components that comprise a non-linear system. The term "non-linear" is understood within ... |
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| The Grand Challenges of Command and Control Policy |
JUN 2006 |
45 pages |
| Authors:
Jack Lenahan; Phil Charles; SPACE AND NAVAL WARFARE SYSTEMS CENTER NORTH CHARLESTON SC
|
| We are interested in defining and investigating the grand challenges facing the command and control (C2) community in a network centric, transformational environment. The purpose of these investigations is to provide a rigorous basis for assessing the state of the art and the state of the practice of command and control in modern warfare. In 1900, David Hilbert proposed a list of 23 outstanding problems in mathematics, a number of ... |
|
| Integrated Sensing and Processing (ISP) Phase II: Demonstration and Evaluation for Distributed Sensor Networks and Missile Seeker Systems |
31 MAY 2006 |
50 pages |
| Authors:
Harry A. Schmitt; Donald E. Waagen; Sal Bellofiore; Thomas Stevens; Robert Cramer; Craig Savage; Nitesh Shah; William Daniels; RAYTHEON MISSILE SYSTEMS CO TUCSON AZ
|
| The primary goal of this effort is to bring to maturity a select set of basic algorithms, hardware, and approaches developed under the Integrated Sensing and Processing (ISP) Phase I program, implement them on representative hardware, and demonstrate their performance in a realistic field environment. We have identified a few promising research thrusts investigated in ISP Phase I where field demonstrations are cost prohibitive but collected data sets are available. ... |
|
| A Rapidly Relocatable Ocean Prediction System |
MAY 2006 |
6 pages |
| Authors:
Germania Peggion; Charlie Barron; Clark Rowley; NEW ORLEANS UNIV LA DEPT OF PHYSICS
|
| Accurate ocean forecast requires and combines knowledge in physics, mathematics, computer sciences, drawing greatest advantage of the new technologies for access, analysis and distribution of the data. We will describe NCOM_OS, a portable, relocatable, and user-friendly prediction system based on the Naval Coastal Ocean Model (NCOM). The system has been developed and routinely applied in support of naval operation. With this product, analysis and prediction can be provided for any ... |
|
| Time Domain Non-Linear SAR Processing |
18 JAN 2006 |
28 pages |
| Authors:
Mehrdad Soumekh; STATE UNIV OF NEW YORK AT BUFFALO DEPT OF ELECTRICAL ENGINEERING
|
| The main objectives of this effort were to develop a theoretical foundation for Time Domain Non-Linear SAR Processing, and corresponding DSP algorithms to efficiently implement the process on existing computer architectures. We formulated the equations to convert a flight path OPS/INS data into ECEF data that were suitable for mapping into a desired slant imaging plane. The GPS data of an existing SAR platform were used for testing this mapping. ... |
|
| The Structure and Infrastructure of Chinese Science and Technology |
2006 |
504 pages |
| Authors:
Ronald N. Kostoff; Michael B. Briggs; Robert L. Rushenberg; Christine A. Bowles; Michael Pecht; OFFICE OF NAVAL RESEARCH ARLINGTON VA
|
| This report identifies and analyzes the science and technology core competencies of China. The first part of the study was performed in the 2003-2004 time frame, and analyzes databases containing 2000-2003 data for China. The second part of the report was sponsored in part by ONR Global, and contains an analysis of 2005 data from China. For the first part of the study, aggregate China publication and citation bibliometrics were ... |
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Reports by Keyword(s)
MATHEMATICS
