| Observation-Based Dissipation and Input Terms for Spectral Wave Models, with End-User Testing |
30 Sep 2012 |
12 pages |
| Authors:
Alexander V Babanin; Ian R Young; W E Rogers; Jane M Smith; Hendrik L Tolman; NAVAL RESEARCH LAB STENNIS DETACHMENT STENNIS SPACE CENTER MS
|
 | The long-term goal is to implement input and dissipation source functions, based on advanced understanding of physics of air-sea interactions, wave breaking and swell attenuation, in wave-forecast models. The objectives are to use new observation-based source terms for the wind input, wave-breaking (whitecapping) dissipation and swell decay in the third-generation models WAVEWATCHIII and SWAN. Calibration and performance of the source functions have to satisfy a set of physical constraints, and ... |
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| Refined Source Terms in WAVEWATCH III with Wave Breaking and Sea Spray Forecasts |
30 Sep 2012 |
7 pages |
| Authors:
Michael L Banner; Russel P Morison; NEW SOUTH WALES UNIV SYDNEY (AUSTRALIA) SCHOOL OF MATHEMATICS
|
| Several U.S. Federal Agencies operate wind wave prediction models for a variety of mission specific purposes. Much of the basic science contained in the physics core of these models is over a decade old, and incorporating recent research advances over the last decade will significantly upgrade the model physics. A major goal is to produce a refined set of source and sink terms for the wind input, dissipation and breaking, ... |
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| Design Data Sheet: Calculation of Surface Ship Annual Energy Usage, Annual Energy Cost, and Fully Burdened Cost of Energy |
07 Aug 2012 |
51 pages |
| Authors:
NAVAL SEA SYSTEMS COMMAND WASHINGTON DC
|
| The lifecycle cost of energy is a function of three important factors, all of which include varying amounts of uncertainty: the operational profile of the ship, the future Fully Burdened Cost of Energy (FBCE), and the physical characteristics of the ship and its equipment. This Design Data Sheet (DDS) outlines the procedure to estimate the annual energy consumption and annual energy cost of non-nuclear surface ships. |
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| Estimating the Fully Burdened Cost of Fuel Using an Input-Output Model - A Micro-Level Analysis |
Sep 2011 |
80 pages |
| Authors:
Sean R Dubbs; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| In 2010, the Department of Defense (DoD) spent $13.2 billion on fuel purchases, with over 3,000 lives lost in fuel delivery operations between 2003 and 2007. To reduce both of these figures, the DoD is investing in technology to reduce fuel consumption, especially in expeditionary and forward operations. These reductions will cause cascading effects throughout the supply chain. The tools of Input-Output Analysis appear to be a natural fit for ... |
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| The Canadian Defence Input-Output Model DIO Version 4.41 |
Sep 2011 |
74 pages |
| Authors:
B Solomon; T Yazbeck; DEFENCE RESEARCH AND DEVELOPMENT CANADA OTTAWA (ONTARIO) CENTRE FOR OPERATIONAL RESEARCH AND ANALYSIS
|
| The Department of National Defence (DND) spends over $10 billion per year on goods and services mostly purchased from Canadian suppliers. The economic activity generated by DND purchases is typically assessed using National Input-Output models developed by Statistics Canada. Using Statistics Canada's latest economic data, the Centre for Operational Research and Analysis's Defence Economics Team developed a tailored Input-Output model adapted to the defence industrial sector. The Defence Input-Output model ... |
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| The Role of Channel Distribution Information for Interference Management and Network Performance Enhancement |
03 NOV 2010 |
22 pages |
| Authors:
James R. Zeidler; Sagnik Ghosh; CALIFORNIA UNIV SAN DIEGO LA JOLLA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| One of the key technologies proposed for next generation commercial and military communications systems is the use of multiple antennas at both the transmitting and receiving nodes of the network. The additional antenna elements provide degrees of freedom that can provide spatial filtering, spatial multiplexing and diversity gain. These advances can be applied to increase link gain, provide interference management, mitigate hostile jammers and facilitate multi-packet reception. In this project ... |
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| Linear Transceiver Design for Interference Alignment: Complexity and Computation |
JUL 2010 |
19 pages |
| Authors:
Meisam Razaviyayn; Maziar S. Boroujeni; Zhi-Quan Luo; MINNESOTA UNIV MINNEAPOLIS DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| Consider a MIMO interference channel whereby each transmitter and receiver are equipped with multiple antennas. The basic problem is to design optimal linear transceivers (or beamformers) that can maximize system throughput. The recent work [1] suggests that optimal beamformers should maximize the total degrees of freedom and achieve interference alignment in high SNR. In this paper we first consider the interference alignment problem in spatial domain and prove that the ... |
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| TWAVE: A Modeling System for Flooding and Inundation of Islands by Tropical Storms |
Jan-2009 |
90 pages |
| Authors:
Alejandro Sanchez; Zeki Demirbilek; Jane M Smith; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This report, the first of a series, describes the coastal modeling package TWAVE (Typhoon and WAVE) developed under the Surge and Wave Island Modeling Studies (SWIMS) project capable of modeling tropical cyclone winds, waves, storm surge, and coastal inundation. The TWAVE flood and inundation package is a practice-oriented engineering modeling tool. The first version of TWAVE is described in this report and will be updated based on user feedback in ... |
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| Optimal Data Transmission on MIMO OFDM Channels |
Dec-2008 |
105 pages |
| Authors:
Luis M M Simoes; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis investigates the Physical Layer performance of single-input single-output (SISO) wireless communications systems, as well as multi antenna techniques such as multiple-input single-output (MISO) and multiple-input multiple-output (MIMO) systems, the last two utilizing the Alamouti-based space-time block coding (STBC) technique. All cases are based on the IEEE 802.16-2004 standard with OFDM using different values of coding rates. International Telecommunications Union (ITU) channel models are selected for the wireless channel ... |
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| Space-Time Power Schedule for Distributed MIMO Links Without Instantaneous Channel State Information at the Transmitting Nodes |
Feb-2008 |
17 pages |
| Authors:
Yue Rong; Yingbo Hua; Ananthram Swami; A L Swindlehurst; CALIFORNIA UNIV RIVERSIDE DEPT OF ELECTRICAL ENGINEERING
|
| A space-time optimal power schedule for multiple distributed multiple-input multiple-output (MIMO) links without the knowledge of the instantaneous channel state information (CSI) at the transmitting nodes is proposed. A readily computable expression for the ergodic sum capacity of the MIMO links is derived. Based on this expression, which is a non-convex function of power allocation vectors, a projected gradient algorithm is developed to optimize the power allocation. For a symmetric ... |
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| Fano Bounds for Compact Antennas. Phase I |
OCT 2007 |
77 pages |
| Authors:
J. C. Allen; J. Meloling; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
|
| Impedance matching is a canonical problem in electrical engineering -- design a matching network that transfers maximum power from a generator to a load. Although the loads in this report are restricted to compact antennas, the mathematical exposition applies to any lumped load. Finding a good matching network is a diffcult numerical optimization problem. Therefore, techniques that compute bounds on the matching provide valuable information. For example, the Fano bounds ... |
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| Studies on Radar Sensor Networks |
08 AUG 2007 |
145 pages |
| Authors:
Qilian Liang; TEXAS UNIV AT ARLINGTON DEPT OF ELECTRICAL ENGINEERING
|
| During the period of 12/8/2006-6/30/2007, we performed the following studies in radar sensor network: (1) Sense-through-foliage target detection using UWB radar sensor network based on real-world data; (2) Foliage clutter modeling using UWB radars; (3) Outdoor UWB channel modeling based on field data; (4) Multi-target detection using radar sensor networks (theoretical studies); (5) SVD-QR and graph theory for MIMO channel selection; (6) Image fusion using radar sensor network; (7) Performance ... |
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| A Model of Onion Routing With Provable Anonymity |
30 AUG 2006 |
20 pages |
| Authors:
Aaron Johnson; YALE UNIV NEW HAVEN CT DEPT OF COMPUTER SCIENCE
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| Onion routing is a scheme for anonymous communication that is designed for practical use. It has not been modeled formally, however, and therefore its anonymity guarantees have not been rigorously analyzed. We give an IO-automata model of an onion-routing protocol and, under possibilistic definitions, characterize the situations in which anonymity and unlinkability are guaranteed. |
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| Testing and Modeling Capabilities |
FEB 2006 |
6 pages |
| Authors:
James Mason; TACOM RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
|
| This briefing looks at the modeling capabilities in the CAMEO-SIM for visual properties and MuSES for thermal properties. CAMEO-SIM predictive software creates physics based synthetic scenes. MuSES allows thermal analysis. |
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| Impulse Propagation using WATTCH |
JAN 2006 |
|
| Authors:
James A. Theriault; Sean Pecknold; DEFENCE RESEARCH AND DEVELOPMENT ATLANTIC DARTMOUTH (CANADA)
|
 | DRDC Atlantic has developed a coherent transmission-loss model that simulates the propagation of acoustic pulses through an ocean environment. Using a set of input eigenrays and an input waveform, the WATTCH (Waveform Transmission Through a Channel) model can simulate the signal received as a result of transmitting the waveform through the ocean environment. Multiple output time-series channels represent receivers at given ranges and depths. Assuming the required eigenrays can be ... |
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| Passive Coordination of Nonlinear Bilateral Teleoperated Manipulators |
16 AUG 2005 |
36 pages |
| Authors:
M. McIntyre; W. Dixon; D. Dawson; E. Tatlicioglu; CLEMSON UNIV SC DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| Significant research has been aimed at the development and control of teleoperator systems due to both the practical importance and the challenging theoretical nature of the problem. Two controllers are developed in this paper for a nonlinear teleoperator system that target coordination of the master and slave manipulators and passivity of the overall system. The first controller is proven to yield a semi-global asymptotic result in the presence of parametric ... |
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| Adaptive Channel Estimation for Multiple-Input Multiple-Output Frequency Domain Equalization |
2005 |
6 pages |
| Authors:
Xu Zhu; Fareq Malek; Yi Gong; Yi Huang; LIVERPOOL UNIV (UNITED KINGDOM)
|
| In this paper we investigate adaptive channel estimation for frequency domain equalization (FDE) in a single carrier (SC) multiple-input multiple-output (MIMO) system. Two types of channel estimation methods are proposed, assuming uncorrelated and correlated frequency bins. The FDE coefficients are computed using the channel estimates. It is shown that our proposed structures significantly outperform the adaptive FDE without channel estimation at high SNR. In particular, the proposed LMS-SCE FDE approaches ... |
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| Design of Synchronization Sequences in a MIMO Demonstration System |
2005 |
5 pages |
| Authors:
Guangqi Yang; Wei Hong; Haiming Wang; Nianzu Zhang; SOUTHEAST UNIV NANJING (CHINA)
|
| MIMO (multi-input and multi-output) wireless communication systems have attracted serious research interest since 1990. It is well accepted that MIMO is a way to breakthrough the wireless capacity bottleneck. However, as the antenna number of a MIMO system increases, the complexity of the system increases dramatically. In a M N (M transmitting antennas by N receiving antennas) MIMO system, the receiver have to perform the synchronization on M N channels ... |
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| OrgAhead: A Computational Model of Organizational Learning and Decision Making [Version 2.1.5] |
Dec-2004 |
57 pages |
| Authors:
Kathleen M Carley; Ju-Sung Lee; CARNEGIE-MELLON UNIV PITTSBURGH PA INST OF SOFTWARE RESEARCH INTERNAT
|
| OrgAhead is a computational model of organizational learning and decision-making. The simulated organization consists of agents whose communication structure resembles hierarchies and whose primary goals are to learn the correct decision or answer to one or more tasks, or objective functions (e.g. typically the majority classification task); we refer to these task functions as the task environment. The organization also seeks to adapt to an optimal structure under the specified, ... |
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| Different Initialization Data and the Performance by the BFM |
NOV 2004 |
36 pages |
| Authors:
Jeffrey E. Passner; ARMY RESEARCH LAB WHITE SANDS NM COMPUTATIONAL AND INFORMATION SCIENCE DIRECTORATE
|
| The U.S. Army Research Laboratory supports the forecaster by producing weather forecasts on the Integrated Meteorological System (IMETS). On IMETS, a mesoscale model known as the Battlescale Forecast Model (BFM) outputs many weather parameters, including temperature, pressure, dew point, relative humidity, and wind speed. Additionally, many other elements, such as icing, turbulence, clouds, and visibility, are produced in the post-processor. This report investigates how these model outputs are influenced by ... |
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| Numerical Optimization of Multifunctional Components |
17 AUG 2004 |
9 pages |
| Authors:
Anthony T. Patera; MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF MECHANICAL ENGINEERING
|
| Engineering components are increasingly complex in composition and structure and increasingly multifunctional. Indeed, it is only through complexity and multifunctionality that the defense industry can satisfy the stringent performance requirements associated with critical defense applications. However, these complex, multifunctional systems no longer admit intuitive analysis of trade-off considerations. Industries must pursue optimization, including optimal choice of material, configuration, and deployment to realize the potential of these new approaches. The essential ... |
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| Numerical Optimization of Multifunctional Components |
17 AUG 2004 |
9 pages |
| Authors:
Anthony T. Patera; MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF MECHANICAL ENGINEERING
|
| Engineering components are increasingly complex in composition and structure and increasingly multifunctional: indeed, it is only through complexity and multifunctionality that we can satisfy the stringent performance requirements associated with critical defense applications. However, these complex, multifunctional systems no longer admit intuitive analysis of trade-off considerations: we must pursue optimization - optimal choice of material, configuration, and deployment - to realize the potential of these new approaches. The essential mathematical ... |
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| Control of Nonlinear Systems |
01 MAR 2004 |
39 pages |
| Authors:
Eduardo D. Sontag; RUTGERS - THE STATE UNIV NEW BRUNSWICKNJ DEPT OF MATHEMATICS
|
| This Final Report summarizes accomplishments of the grant research. The work focuses on the mathematical foundations of nonlinear systems analysis and feedback control. It addresses the continuing development of systems analysis tools based on input to state stability and related notions of detectability, regulation, and stabilization, as well as the study of new theoretical questions arising from the study of biomolecular cellular mechanisms, seen as a source of inspiration for ... |
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| Control of Nonlinear Systems |
2004 |
5 pages |
| Authors:
Eduardo D. Sontag; RUTGERS - THE STATE UNIV NEW BRUNSWICKNJ DEPT OF MATHEMATICS
|
| This Final Report summarizes accomplishments of the grant research. The work focuses on the mathematical foundations of nonlinear systems analysis and feedback control. The emphasis is on monotone input/output systems, and underlying new theoretical questions arising from the study of biomolecular cellular mechanisms, seen as a source of inspiration for novel sensor, actuation, and control architectures. |
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| Training Tree Transducers |
2004 |
9 pages |
| Authors:
Jonathan Graehl; Kevin Knight; UNIVERSITY OF SOUTHERN CALIFORNIA MARINA DEL REY INFORMATION SCIENCES INST
|
| Many probabilistic models for natural language are now written in terms of hierarchical tree structure. Tree-based modeling still lacks many of the standard tools taken for granted in (finite-state) string-based modeling. The theory of tree transducer automata provides a possible framework to draw on, as it has been worked out in an extensive literature. We motivate the use of tree transducers for natural language and address the training problem for ... |
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| Quantitative Feedback Technique (QFT): Bridging the Gap |
MAY 2003 |
56 pages |
| Authors:
Constantine H. Houpis; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
|
| This paper presents the essential features of Horowitz's transparency of QFT and his QFT technique that exemplify the concept of "Bridging the Gap," which are the essential aspects of the QFT control system design process. |
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| Backing Up Behaviors in Teams: The Role of Personality and Legitimacy of Need |
2002 |
|
| Authors:
Christopher O. Porter; John R. Hollenbeck; Danie R. Ilgen; Aleksander P. Ellis; Bradley J. West; Henry K. Moon; TEXAS A AND M UNIV COLLEGE STATION DEPT OF MANAGEMENT
|
| Backing up behavior has generally been defined as helping other team members perform their roles and is thought to be critical for effective performance in teams. To date, there has been no empirical investigation of backing up in teams, despite its importance. We develop and test an input process output model of backing up behavior in teams, proposing that backing up behavior in teams can be predicted at the team ... |
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| Qualifying Risk: Mission Ready Certification of Shipboard Systems |
JUL 2001 |
50 pages |
| Authors:
Richard A. Holden; NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
|
| This report documents the results of a series of studies of the impact of Acquisition Reform on the process of engineering systems used aboard ships during operational deployments and, specifically, the impact on the engineering process if commercial items are used in place of the traditional uniquely Navy products. An input-output model is used to represent the core technical process of developing, producing, and supporting shipboard systems. A basis of ... |
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| Data Mining Meets Performance Evaluation: Fast Algorithms for Modeling Bursty Traffic |
APR 2001 |
18 pages |
| Authors:
Mengzhi Wang; Tara Madhyastha; Ngai H. Chan; Spiros Paradimitriou; Christos Faloutsos; CARNEGIE-MELLON UNIV PITTSBURGH PA SCHOOL OF COMPUTER SCIENCE
|
| Network, web, and disk I/O traffic are usually bursty, self-similar [9, 3, 5, 6] and therefore can not be modeled adequately with Poisson arrivals[9]. However, we do want to model these types of traffic and to generate realistic traces, because of obvious applications for disk scheduling, network management, web server design. Previous models (like fractional Brownian motion, ARFIMA etc) tried to capture the burstiness . However the proposed models either ... |
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| Covalidation of Dissimilarly Structured Models |
MAR 2001 |
155 pages |
| Authors:
Samuel A. Wright; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
|
| A methodology is presented which allows comparison between models constructed under different modeling paradigms. Consider the following situation: Two models are constructed to study different aspects of the same system. One model simulates a fleet of aircraft moving a given combination of cargo and passengers from an onload point to an offload point. A second model is a linear programming model that optimizes the aircraft and route selection required for ... |
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| Hierarchical Modeling and Simulation Techniques with Application to Computational Fluid Dynamics and Fluid-Flow Control |
06 DEC 2000 |
8 pages |
| Authors:
C. R. Anderson; J. S. Gibson; CALIFORNIA UNIV LOS ANGELES DEPT OF MATHEMATICS
|
| The primary research objective of this contract was to investigate and develop fluid flow control procedures by utilizing a hierarchical modeling approach. This project included research on control and identification methods for vortex wakes, with the primary example being stabilization of vortices behind a flat plate. Vortex blob and finite difference methods were constructed to provide the flow dynamics. Linear time-invariant feedback controllers have been developed, as well as identification ... |
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| Estimating Budget Relationships With a Leontief Input-Output Model |
DEC 2000 |
75 pages |
| Authors:
Guenever L. Shariff; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Forty years ago, the Office of the Secretary of Defense proposed using the Leontief input-output model to assess tradeoffs in the Department of Defense's (DoD) budget. We demonstrate that the Leontief input-output model can assess tradeoffs in the Air Force's budget. To increase one part of the Air Force's budget, we need to know the interrelationships between that budget area and the other areas. In this research, we look at ... |
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| Improving Trigram Language Modeling with the World Wide Web |
NOV 2000 |
17 pages |
| Authors:
Xiaojin Zhu; Ronald Rosenfeld; CARNEGIE-MELLON UNIV PITTSBURGH PA SCHOOL OF COMPUTER SCIENCE
|
| We propose a novel method for using the World Wide Web to acquire trigram estimates for statistical language modeling We submit an N-gram as a phrase query to web search engines. The search engines return the number of web pages containing the phrase, from which the N-gram count is estimated. The N- gram counts are then used to form web-based trigram probability estimates. We discuss the properties of such estimates, ... |
|
| Eagle Terrain Preprocessor |
SEP 2000 |
36 pages |
| Authors:
George B. McKinley; Terril C. Falls; David C. Stuart; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS GEOTECHNICAL LAB
|
| The purpose of this report is to describe the automated user-friendly programs produced by the U.S. Army Engineer Research and Development Center, Vicksburg, MS, which create the terrain-related inputs required by the Eagle model. The project was divided into three tasks. The first task involved modification of the mobility corridors (MC) network creation software in Terrain Evaluation Module (TEM) to compute the additional attributes required by the ... |
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| Leontief Metamodeling for Military Strategic Effects |
MAR 2000 |
108 pages |
| Authors:
Anthony W. Snodgrass; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH SCHOOL OF ENGINEERING
|
| In this research, we propose and demonstrate an approach to incorporate currently un-modeled interactions into an existing or a new combat model or simulation. We apply the Leontief Input-Output model, which is a macro- economic model that measures the interactions between major industrial sectors of an economy, as a metamodel that periodically assesses the status of various combat units and support functions. If needed resources are ... |
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| Noise-Mediated Cooperative Behavior and Signal Detection in dc SQUIDs |
AUG 1999 |
14 pages |
| Authors:
Mario E. Inichiosa; Adi R. Bulsara; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
|
| We study the detection of very weak time-periodic magnetic signals via a double-junction (dc) Superconducting Quantum Interference Device (SQUID). The device, represented by two coupled nonlinear differential equations for the quantum mechanical junction phases, admits of long-time static or oscillatory solutions, the transition being controllable by experimental parameters. Signal detection is optimal when the device is "tuned" to the onset of the oscillatory solutions; ... |
|
| Projected Defense Purchases: Detail by Industry and State. Calendar Years 1999 Through 2005 |
MAY 1999 |
159 pages |
| Authors:
OFFICE OF THE SECRETARY OF DEFENSE WASHINGTON DC DIRECTOR PROGRAM ANALYSIS AND EVALUATION
|
| This report presents estimates of defense purchases during calendar years 1999-2005 from 50 industries that are major defense suppliers. The report also provides projections of defense-related employment and of defense and defense-related spending for each of the 50 states and the District of Columbia during 1999-2005. The estimates are based on the President's budget submission of February 1999, and on the geographic distribution of the ... |
|
| Clearning Phased Array Radar Data |
AUG 1997 |
6 pages |
| Authors:
Andreas S. Weigend; COLORADO UNIV AT BOULDER DEPT OF COMPUTER SCIENCE
|
| Many military and civilian problems can be viewed as pattern recognition: given a set of measured inputs, the task is to predict the corresponding output. Typical examples range from image recognition and classification, to time series prediction and regression. Most modeling assumes that the inputs can be measured exactly, without noise. Building a model then means to construct (or "learn") a mapping from these inputs to the expected values of ... |
|
| Truetime Model GPS-DC-552 MK III GPS Receiver Live Static Test |
14 APR 97 |
36 pages |
| Authors:
Edward D. Powers; Edward C. Jones; NAVAL RESEARCH LAB WASHINGTON DC
|
| The GPS Program Offices, Los Angeles Air Force Base, California, has established a Center of Expertise (COE) comprised of several agencies, each providing unique GPS test capabilities for the purpose of developing a Commercial Receiver Test Program (CRTP). The Responsible Test Organization (RTO) for the COE is the 746th Test Group, 46th Guidance Test Squadron, Holloman, Air Force Base, New Mexico. The Naval Research Laboratory (NRL) has been designed as ... |
|
| Nonlinear Robust Control Theory and Applications |
18 JAN 1997 |
11 pages |
| Authors:
John C. Doyle; CALIFORNIA INST OF TECH PASADENA
|
| Model based control methods are commonly used in the design of large, complex systems. Specifically, a mathematical model of the system is constructed, utilizing, for example, first principles analysis and experimental data, which is then used for subsequent control system design and analysis. For the purposes of feedback control highly accurate models are desired. However, such accuracy often requires that complicated high order models be used, which in turn lead ... |
|
| Costs and Benefits of Alternative Drug Testing Programs |
JUL 96 |
30 pages |
| Authors:
Jules I. Borack; NAVY PERSONNEL RESEARCH AND DEVELOPMENT CENTER SAN DIEGO CA
|
| A computerized model for determining costs and benefits of alternative drug testing programs was developed, which compared drug use in the Navy with a demographically equivalent group of civilians. The benefits of deterring and detecting drug users were compared with the costs of drug testing to determine net benefits. Benefits of testing were based on the estimated decrease in the number of drug users and the corresponding increase in employee ... |
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| Methods for Determining Wartime Medical Requirements |
MAY 96 |
|
| Authors:
Robert A. Levy; Laurie J. May; James E. Grogan; CENTER FOR NAVAL ANALYSES ALEXANDRIA VA
|
| This briefing presents some results of our analysis of various methods and models that are used to determine wartime medical requirements. Our approach was focused on two key issues. First, we examined the requirements process, which really means understanding the main methods or tools that are used. The second key issue concerns the comparison of the requirements models used in the process. We identified three major objectives in the study ... |
|
| International Space Station Traffic Modeling and Simulation |
MAR 96 |
151 pages |
| Authors:
Jillene B. Rylaarsdam; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
|
| In an effort to provide NASA with an alternative perspective and some insights to the operational planning of the International Space Station (ISS), this research developed a simulation environment for the ISS and devised a method to evaluate various altitude strategies. The simulation environment allowed us to incorporate the natural random behaviors which affect the lifetime of objects in low earth orbit. We created prototype models of the operational planning ... |
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| Implementing Readiness-Based Sparing in the Marine Aviation Logistics Support Program: Readiness Implications |
DEC 1995 |
|
| Authors:
Mark B. Geis; Vonda S. Camper; Barbara H. Measell; Jessica S. Oi; CENTER FOR NAVAL ANALYSES ALEXANDRIA VA
|
| The Marine Aviation Logistics Support Program (MALSP) was developed to ensure that all logistics support required for major regional contingency can be deployed quickly and efficiently when needed. The foundation for the MALSP is a set of standardized logistics support packages containing all the elements (spare parts, people, support equipment, and mobile facilities) required to support any contingency plan the Marine Corps may be tasked to execute. This study focuses ... |
|
| Gain Scheduling For Robust Linear Controllers |
AUG 95 |
6 pages |
| Authors:
Wilson J. Rugh; JOHNS HOPKINS UNIV BALTIMORE MD
|
| This final report briefly describes research results on a theory of gain scheduling for flight control applications that were obtained by the Principal Investigator and his students over the two year period of support. Results reported include the development of a solution to an input-output pseudolinearization problem for nonlinear systems, characterization of the impact of linear controller configuration on the gain scheduling process, and formulation of an approach to gain ... |
|
| Analyzing Employment Effects of Stream Restoration Investments |
NOV 94 |
89 pages |
| Authors:
ARMY ENGINEER INST FOR WATER RESOURCES FORT BELVOIR VA
|
| This study reports on economic development and employment effects of non-structural stream (riparian) restoration. Using a regional input-output model known as IMPLAN, detailed descriptions of stream restoration practices, and local and national information on stream restoration expenditures, this study estimates the regional economic development and employment creation effects associated with three restoration projects: Anacostia Creek in Maryland, a highly degraded urban stream and the site of the largest restoration project ... |
|
| A Wavelet Model for Vocalic Speech Coarticulation |
OCT 94 |
189 pages |
| Authors:
R. C. Lange; PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB
|
| A known aspect of human speech is that a vowel produced in isolation (for example, ee) is acoustically different from a production of the same vowel in the company of two consonants (deed). This phenomenon natural to the speech of any language, is known as consonant-vowel-consonant coarticulation. The effect of coarticulation results when a speech segment (d) dynamically influences the articulation of an adjacent segment (ee within deed). A recent ... |
|
| EIFS 5.0, Economic Impact Forecast System User's Reference Manual |
JUL 94 |
151 pages |
| Authors:
Claire E. Huppertz; Kim Bloomquist; CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL
|
| The Economic Impact Forecast System is a multifaceted computer system that provides information useful for estimating the socioeconomic impacts caused by military projects and activities. This report provides information for obtaining and initially interpreting output from current and future versions of EIFS. The information contained in this report supersedes information contained in the USACERL Technical Report N-2 and the 1979 and 1984 editions of USACERL technical Report N-69. This manual ... |
|
| Natural Resources Research Program. An Assessment of the National Economic Effects of the U.S. Army Corps of Engineers Recreation Program |
JUN 94 |
24 pages |
| Authors:
R. S. Jackson; Daniel J. Stynes; Dennis B. Propst; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
| Increased consideration of regional economic implications of recreation programs associated with Corps water resource development projects has resulted in the need for improved procedures for measuring these effects. An approach is proposed for developing credible, technically sound economic impact assessments of agency recreation programs. The approach involves four steps: (a) identification of appropriate economic impact indicators; (b) development of representative recreation expenditure final demand vectors; (c) creation of recreation demand ... |
|
| Mixed H2/H Infinity Optimization with Multiple H Infinity Constraints |
JUN 94 |
136 pages |
| Authors:
Julio C. Ullauri; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
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| A general mixed H2/Hoo optimal control design with multiple Hoo constraints is developed and applied to two systems, one SISO and the other MIMO. The SISO design model is normal acceleration command following for the F- 16. This design constitutes the validation for the numerical method, for which boundaries between the H2 design and the Hoo constraints arc shown. The MIMO design consists of a longitudinal aircraft plant (short period ... |
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