| Performance Analysis of Recurrence Matrix Statistics for the Detection of Deterministic Signals in Noise |
04 JAN 2008 |
33 pages |
| Authors:
Joseph V. Michalowicz; Jonathan M. Nichols; Frank Bucholtz; NAVAL RESEARCH LAB WASHINGTON DC OPTICAL TECHNIQUES BRANCH
|
 | Understanding the limitations to detecting deterministic signals in the presence of noise, especially additive, white Gaussian noise, is of importance for the design of LPI systems and anti-LPI signal defense. In this report, we investigate the use of recurrence plots for such detection, and we compare the performance of a recurrence-plot-based detector to a standard power-detection approach. Performance is evaluated using receiver-operator characteristic (ROC) curves. |
|
| A Case Study of the Persistence of Weather Forecast Model Errors |
JAN 2005 |
48 pages |
| Authors:
Barbara Sauter; ARMY RESEARCH LAB WHITE SANDS MISSILE RANGE NM
|
| Decision makers could frequently benefit from information about the amount of uncertainty associated with a specific weather forecast. Automated numerical weather prediction models provide deterministic weather forecast values with no estimate of the likely error. This case study examines the day- to-day persistence of forecast errors of basic surface weather parameters for four sites in northern Utah. Although exceptionally low or high forecast errors on one day are more likely ... |
|
| A Simple Probabilistic Model for Estimating the Risk of Standard Air Dives |
DEC 2004 |
49 pages |
| Authors:
H. D. Van Liew; E. T. Flynn; NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FL
|
| Statistical fitting of an algorithm to "calibration data" gives parameter values for a "probabilistic decompression model." Some previous probabilistic models prescribe long times at decompression stops for standard air dives. Here we present a simple model, based on premises different from those used previously, to test whether long decompression times are necessary and to enable risk of decompression sickness (UCS) to be estimated in air dives. Using logistic regression, we ... |
|
| Thermal Hydraulic Performance Analysis of a Small Integral Pressurized Water Reactor Core |
SEP 2003 |
256 pages |
| Authors:
MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF NUCLEAR ENGINEERING
|
| A thermal hydraulic analysis of the International Reactor Innovative and Secure (IRIS) core has been performed. Thermal margins for steady state and a selection of Loss Of Flow Accidents have been assessed using three methodologies to account for uncertainty. The thermal hydraulic analysis has shown that the IRIS is designed with adequate thermal margin for steady state operation, the locked rotor/shaft shear accident (LR/SS) and for variants of the partial ... |
|
| Regional Mine Burial Prediction Using Monte Carlo and Deterministic Methods |
2003 |
9 pages |
| Authors:
Paul A. Elmore; Michael D. Richardson; NAVAL RESEARCH LAB STENNIS SPACE CENTER MS MARINE GEOSCIENCES DIV
|
| An integrated, time-dependent, stochastic model for predicting mine burial in littoral waters is presented. The model is designed to account for impact burial of mines and coupled post-impact burial processes (scour, sand ridge migration, and liquefaction) by integrating currently available deterministic models that predict these burial processes. Operational Navy databases and oceanographic modeling output from the United States Naval Oceanographic Office (NAVOCEANO) are used to Set up the initial bathymetric ... |
|
| Multiple Runs of a Deterministic Combat Model |
01 NOV 2001 |
10 pages |
| Authors:
Timothy J. Bailey; TRADOC ANALYSIS CENTER FORT LEAVENWORTHKS
|
| In the past, combat simulations of corps and division level operations required several days to model a few days of combat. Driven by the speed, size, and cost of the computers of that time, it was infeasible, if not impossible, to replicate the runs in a run design. Thus, the investigation of that scale of combat used deterministic models. Today, computer technology offers performance improvements of two to three orders ... |
|
| Spatial Modulation in the Underwater Acoustic Communication Channel |
JUN 2000 |
|
| Authors:
Daniel B. Kilfoyle; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
 | A modulation technique for increasing the reliable data rate achievable by an underwater acoustic communication system is presented and demonstrated. The technique, termed spatial modulation, seeks to control the spatial distribution of signal energy such that multiple parallel communication channels are supported by the single, physical ocean channel. Results from several experiments successfully demonstrate higher obtainable data rates and power throughput. Given a signal ... |
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| Force Allocation Modeling in Support of Contingency Operations - Demonstration Study |
01 JAN 1997 |
70 pages |
| Authors:
Jeffrey B. Goldberg; David F. Davis; John V. Farr; Stephen R. Robinson; MILITARY ACADEMY WEST POINT NY
|
| Resource allocation issues beyond those at the operational level have never been an issue with regards to operations. Enough redundant capabilities have existed within the services that executing a contingency operation was not critically important in terms of resource allocation. However, the current resource constrained environment coupled with the increased commitment to contingency operations no longer allow long term strategic planners to ignore the effects on the services ability to ... |
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| Nonlinear Dynamics of the Additive-Pulse Modelocked Laser |
JAN 97 |
132 pages |
| Authors:
Eric J. Mozdy; CORNELL UNIV ITHACA NY
|
| A model of the additive-pulse modelocked (APM) laser is developed, with an emphasis on nonlinear dynamics. The APM laser has been traditionally used as a stable, pulsed light source, with multiple regions of instability that hamper useful operation. Many of these instabilities are deterministic, resulting from large levels of nonlinearity, and can be exploited if understood. In this thesis, the different elements of a typical APM laser are studied, and ... |
|
| A Probabilistic Analysis of the Power of Arithmetic Filters |
SEP 96 |
31 pages |
| Authors:
Olivier Devillers; Franco Preparata; BROWN UNIV PROVIDENCE RI DEPT OF COMPUTER SCIENCE
|
| The assumption of real-number arithmetic, which is at the basis of conventional geometric algorithms, has been seriously challenged in recent years, since digital computers do not exhibit such capability. A geometric predicate usually consists of evaluating the sign of some algebraic expression. In most cases, rounded computations yield a reliable result, but sometimes rounded arithmetic introduces errors which may invalidate the algorithms. The rounded arithmetic may produce an incorrect result ... |
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| Developing Seasonal and Long-term Reservoir System Operation Plans using HEC-PRM |
JUN 96 |
129 pages |
| Authors:
Jay R. Lund; HYDROLOGIC ENGINEERING CENTER DAVIS CA
|
| The major intent of this report is to provide guidance for the use of HEC-PRM (and deterministic optimization models in general) for seasonal and long-term operation planning. Seasonal and long-term operation planning are fairly different undertakings, in the level of analysis detail, the role of hydrology and uncertainty, and the frequency of policy revision (seasonal operations can be revised monthly). Thus the details of setting up, conducting, and interpreting optimization ... |
|
| Representation Issues in Signal Processing Applications |
JUN 96 |
9 pages |
| Authors:
Avideh Zakhor; CALIFORNIA UNIV BERKELEY
|
| We have developed an optimal bit allocation strategy for a joint source/channel video coded over noisy channel when the channel state is assumed to be known. Our approach is to partition source and channel coding bits in such a way that the expected distortion is minimized. The particular source coding algorithm we use is rate scalable and is based on 3D subband coding with multi- rate quantization. We have shown ... |
|
| Robust Fixed-Structure Control |
30 OCT 94 |
28 pages |
| Authors:
Dennis S. Bernstein; MICHIGAN UNIV ANN ARBOR DEPT OF AEROSPACE ENGINEERING
|
| This final report for AFOSR Grant F49620-92-J-0127 summarizes results obtained in five areas, namely, robust control, linear control, sampled-data control, tracking and disturbance rejection, and nonlinear control. Principal results include new bounds for the structured singular value, implementation of structured singular value synthesis using fixed-structure optimization techniques, a more rigorous foundation for the Maximum Entropy control technique, extensions of linear-quadratic control to stable stabilizing controllers, determination of the achievable performance ... |
|
| A New Stochastic/Perturbation Method for Large-Scale Global Optimization and Its Application to Water Cluster Problems |
MAY 1993 |
19 pages |
| Authors:
Richard H. Byrd; Thomas Derby; Elizabeth Eskow; Klaas P. Oldenkamp; Robert B. Schnabel; COLORADO UNIV AT BOULDER DEPT OF COMPUTER SCIENCE
|
| We describe a class of new global optimization methods designed to solve large, partially separable problems. The methods have been motivated by the consideration of problems from molecular chemistry, but should be applicable to other partially separable problems as well. They combine a first, stochastic phase that identifies an initial set of local minimizers, with a second, more deterministic phase that moves from low to even lower local minimizers and ... |
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| Effects of Thermal Residual Stresses and Fiber Packing on Deformation of Metal-Matrix Composites. |
1993 |
|
| Authors:
T. Nakamura; S. Suresh; BROWN UNIV PROVIDENCE RI DEPT OF ENGINEERING
|
| The combined effects of thermal residual stresses and fiber spatial distribution on the deformation of a 6061 aluminum alloy containing a fixed concentration unidirectional boron fibers have been analyzed using detailed finite element models. the geometrical structure includes perfectly periodic, uniformly spaced fiber arrangements in square and hexagonal cells, as well as different cells in which either 30 or 60 fibers are randomly placed in the ductile matrix. the model ... |
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| Report on Lyme disease Prepared for U.S. Army Corps of Engineers Field Personnel |
JAN 92 |
|
| Authors:
William A. Johnson; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
| Lyme disease is an arthropod-borne, bacterial, multisystemic disease. It has assumed importance as an epidemic disease in parts of the United States and in a number of other countries as well. The primary vector of Lyme disease, Ixodes dammini, has a widespread distribution in the heavily populated Midwest, Northwest, and Atlantic states, where the tick utilizes small mammals (during the nymphal stage) and deer and other larger mammals, including man ... |
|
| On the Issue of the Born-Rytov Controversy. 1. Comparing Analytical and Approximate Expressions for the One-Dimensional Deterministic Case |
91 |
|
| Authors:
F. C. Lin; M. A. Fiddy; LOWELL UNIV MA DEPT OF ELECTRICAL ENGINEERING
|
| The applicability and domains of validity for the Born and the Rytov methods in scattering theory are established, with mathematical rigor, by comparing successive terms of the Born and the Rytov series calculated for wave propagation in a homogeneous dielectric halfspace and a homogeneous dielectric slab, for which the permittivities are assumed to have a low contrast over tha of free-space. While the (first order) Rytov approximation is superior to ... |
|
| Proceedings of the Annual DARPA/AFGL Seismic Research Symposium (11th) Held in San Antonio, Texas on 2-4 May 1989 |
06 NOV 90 |
|
| Authors:
James F. Lewkowicz; Jeanne M. McPhetres; GEOPHYSICS LAB (AFSC) HANSCOM AFB MA
|
| Partial contents: Near Source Observations of Quarry Explosions, Small Explosion Discrimination and Yield Estimation, Rg as a Depth Discriminant for Earthquakes and Explosions: A Case Study in New England, A Comparative Study of High Frequency Seismic Noise at Selected Sites in the USSR and USA, Chemical Explosions and the Discrimination Problem, Application of Simulated Annealing to Joint Hypocenter Determination, Frequency Dependence of Q sub Lg and Q in the Continental ... |
|
| Estimation and Correction of Geometric Distortions in Side-Scan Sonar Images |
MAR 90 |
|
| Authors:
Daniel T. de Queiroz Cobra; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| This thesis introduces a new procedure for the enhancement of acoustic images of the bottom of the sea produced by side-scan sonars. Specifically, it addresses the problem of estimating and correcting geometric distortions frequently observed in such images as a consequence of motion instabilities of the sonar array. This procedure estimates the geometric distortions from the image itself, without requiring any navigational or attitude measurements. A mathematical model for the ... |
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| A Methodology for Determining the Survivability of Fixed-Wing Aircraft Against Small Arms |
MAR 89 |
|
| Authors:
John M. Grover; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
|
| The purpose of this study was to develop an efficient and effective method of evaluating the survivability of a fixed-wing aircraft against small arms. A computer model was created to predict the probability an aircraft survives given an encounter with a small arms weapon, P(s/e), adn the expected number of hits it receives, E(hits). The model was a one-on-one deterministic duel of a small arms weapon and an aircraft. The ... |
|
| Signal Detection in Fractional Gaussian Noise and an RKHS (Reproducing Kernel Hilbert Space) Approach to Robust Detection and Estimation |
FEB 89 |
|
| Authors:
Richard J. Barton; ILLINOIS UNIV AT URBANA COLL OF ENGINEERING
|
| This report is divided into two parts. In the first part, the problem of signal detection in fractional Gaussian noise is considered. To facilitate the study of this problem, several results related to the reproducing kernel Hilbert space of fractional Brownian motion are presented. In particular, this reproducing kernel Hilb4rt space is characterized completely, and an alternative characterization for the restriction of this class of functions to a compact interval, ... |
|
| A Statistical Analysis of the Output Signals of an Acousto-Optic Spectrum Analyzer for CW (Continuous-Wave) Signals |
OCT 88 |
|
| Authors:
Guy J. Farley; DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)
|
| A statistical analysis on the output signals of an acousto-optic spectrum analyzer (AOSA) is performed for the case when the input signal is a continuous-wave (CW). To this end, a statistical model of these output signals is presented as a basis for the different analyses along with some numerical algorithms to calculate the deterministic components on a digital computer. Using this model, the optimum test for the detection of a ... |
|
| Multisensor Modeling Underwater with Uncertain Information |
SEP 88 |
|
| Authors:
W. K. Stewart; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA
|
| This thesis develops an approach to the construction of multidimensional stochastic models for intelligent systems exploring an underwater environment. The important characteristics shared by such applications are: real-time constraints; unstructured, three-dimensional terrain; high-bandwidth sensors providing redundant, overlapping coverage; lack of prior knowledge about the environment: and inherent inaccuracy or ambiguity in sensing and interpretation. The models are cast as a three-dimensional spatial decomposition of stochastic, multisensor feature vectors that describe ... |
|
| Estimation of Parameters of Non-Gaussian Non-Zero Mean Autoregressive Processes with Application to Optimal Detection in Colored Noise |
JUN 88 |
|
| Authors:
Debasis Sengupta; Steven Kay; RHODE ISLAND UNIV KINGSTON DEPT OF ELECTRICAL ENGINEERING
|
| The problem addressed in this paper is that of estimating signal and noise parameters from a mixture of Non-Gaussian autoregressive (AR) noise with partially known deterministic signal. Two models are considered in order to examine different kinds of additive mixing. The Cramer-Rao bounds to the joint estimation of the signal amplitude and the noise parameters are presented. A computationally efficient estimator, which was previously proposed for estimation in the absence ... |
|
| On Path Properties of Certain Infinitely Divisible Processes |
NOV 87 |
|
| Authors:
Jan Rosinski; TENNESSEE UNIV KNOXVILLE DEPT OF MATHEMATICS
|
| Sample path properties of Poissonian type stochastic integral processes are studied. It is proven that various properties of the sections of the deterministic kernel (as, for example, unboundedness, discontinuity, etc.) are inherited by the sample paths of the corresponding stochastic integral process. An analogous statement for Gaussian processes is false. As a main tool, a series representation of stochastic integral processes is fully developed and this may be of independent ... |
|
| Experimental Confirmation of Superposition from Small-Scale Explosions |
NOV 87 |
39 pages |
| Authors:
B. W. Stump; Robert E. Reinke; AIR FORCE WEAPONS LAB KIRTLAND AFB NM
|
| An in situ experimental program is implemented and analyzed to test linear superposition. After separating stochastic and deterministic propagation path effects, direct superposition is experimentally validated for two 5-lb charges spaced as close as 2 m in alluvium. Finite spatial source effects are observed and modeled in the plane passing through two charges separated by 2 to 10 m. The deterministic single-burst waveforms are used to model the multiple burst ... |
|
| Autonomous Liquid Encapsulated Czochralski (LEC) Growth of Single Crystal GaAs by 'Intelligent' Digital Control |
19 AUG 87 |
|
| Authors:
Karl Reidling; G. H. Schwuttke; ARIZONA STATE UNIV TEMPE SEMICONDUCTOR MATERIALS RESEARCH LAB
|
| Virtually total automation of the high-pressure LEC process for GaAs growth could be achieved with an intelligent growth control approach which combines deterministic and heuristic techniques. A number of 4 kg, 3 inch semi- insulating GaAs crystals have been grown reproducibly on an adapted Cambridge Instruments CI 358 puller without any significant operator intervention; even complex process steps like seeding and tail-off could be successfully handled by the system on ... |
|
| Dense-Spray Structure and Phenomena. Part 1. Turbulence/Dispersed-Phase Interactions |
15 AUG 87 |
|
| Authors:
R. N. Parthasarathy; G. M. Faeth; MICHIGAN UNIV ANN ARBOR GAS DYNAMICS LABS
|
| This report describes one aspect of an investigation of dense-spray processes: namely turbulence/dispersed-phase interactions. The work was divided into two phases: (1) measurements of particle-laden jets injected into a still liquid; and homogenous particle flows, consisting of particles falling in a still (in the mean) liquid bath. The structure of turbulent, dilute, particle- laden water jets, submerged in still water, was studied both experimentally and theoretically. Nonintrusive measurements were made ... |
|
| Planning under Uncertainty Using Parallel Computing |
JAN 87 |
|
| Authors:
George B. Dantzig; STANFORD UNIV CA SYSTEMS OPTIMIZATION LAB
|
| Industry and government routinely solve deterministic mathematical programs for planning and scheduling purposes, some involving thousands of variables with a linear or non-linear objective and inequality constraints. The solutions obtained are often ignored because they don't properly hedge against future contingencies. It is relatively easy to reformulate models to include uncertainty. The bottleneck has been (and is) our capability to solve them. The time is now ripe for finding a ... |
|
| A Methodology for Identifying Cost Effective Strategic Force Mixes |
DEC 84 |
|
| Authors:
T. W. Manacapilli; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
|
| This thesis represents a methodology for the identification of cost effective strategic force mixes. The methodology makes use of Response Surface Methodology (RSM), economic production functions, economic theory, deterministic models, and Lagrangian techniques to identify cost effective choices. The methodology fits economic production functions to the response surface of a nuclear exchange model (a linear programming problem) using RSM. It then maximizes these economic production function subject to a cost ... |
|
| An Analysis of Coherent Digital Receivers in a Jamming Environment |
JUN 1984 |
|
| Authors:
F. T. Farwell Jr; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The effect of various jammer waveforms on known optimum coherent digital receivers is analyzed and evaluated in terms of receiver performance. The optimum jammer waveform for the specified receiver is derived and several jamming strategies are studied and compared to the optimum case. These jammer waveforms strategies include deterministic models of tonal, weighted signals, frequency modulated, and additive white noise jammers. An M-ARY digital coherent receiver using orthogonal modulation (FSK), ... |
|
| WOPPLOT 83 Parallel Processing: Logic, Organization, and Technology |
84 |
|
| Authors:
H. Araki; SPRINGER-VERLAG NEW YORK
|
| Contents: Cybernetic Principles of Organization, Physical and Technological Restrictions of VLSI, Design Strategies for VLSI Logic, Charge Storage and Charge Transfer in Dynamic Memories, Interpretation and Time, A stochastic Model of 1/f Noise and Its Application to Semiconductors, Non Deterministic Machines and Their Generalizations, Parallel Algorithms-Theory and Limitations, Interconnection Networks for MIMD Machines, The Organization of Parallel Processing Machines, Organization of Multi-Processor Systems for Image Processing, Memory-Coupled Processor Arrays for ... |
|
| Determination of Ammunition Training Rates for Marine Forces Study. Volume 2 |
17 SEP 1983 |
|
| Authors:
R. J. Yeoman; MARINE CORPS DEVELOPMENT AND EDUCATION COMMAND QUANTICO VA
|
| This annex contains all of the detailed information from the Tank Gunnery Questionnaire: the detailed responses as well as plots of the data showing key results; the methodology used in estimating total ammunition usage for a change in the allocation of ammunition; and the statistical methods to be used in analyzing the hard data collected in the test program proposed in of the main body of the report. |
|
| Determination of Ammunition Training Rates for Marine Forces Study. Volume 1 |
17 SEP 1983 |
|
| Authors:
R. J. Yeoman; MARINE CORPS DEVELOPMENT AND EDUCATION COMMAND QUANTICO VA
|
| This study determined the ammunition expenditures necessary to attain and maintain required levels of proficiency for individuals and units. Previously, very little consideration was given to levels of desired proficiency in determining allowances. The study focused on the determination of training allowances based on the attainment of individual training standards in formal schools as well as in operational units; the maintenance of individual training standards; and the attainment and maintenance ... |
|
| Estimating the Probability of Crashing for a Terrain-Following Missile. |
JAN 1982 |
|
| Authors:
Edward P. Cunningham; JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB
|
|
| Optimal Thrust Vector Control for Vertical Launch of Tactical Missiles. |
JAN 1982 |
|
| Authors:
H. O. Jonsson; G. Malmberg; SAAB-SCANIA A B LINKOPING (SWEDEN)*
|
|
| Studies in Numerical Algebra with Applications |
29 SEP 1981 |
|
| Authors:
M. Marcus; M. Goldberg; M. Newman; R. C. Thompson; H. Minc; CALIFORNIA UNIV SANTA BARBARA INST FOR ALGEBRA AND COMBINATORICS
|
| Research covered the following topics: (1) generalizations of the Cauchy-Schwarz inequality to determinants; (2) the structure of the set of complex numbers (Ax sub 1, Y sub 1) + ... + (Ax sub r, y sub r) where the inner products (x sub i, x sub j), (Y sub i, Y sub j) and (x sub i, Y sub j) are stipulated, i = 1,...,r; (3) the positive definite property ... |
|
| The MLE Tracking Algorithm: A Summary and Error Analysis. |
15 MAY 1981 |
|
| Authors:
M. J. Shensa; NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA
|
| This report discusses, in general, least-squares tracking algorithms and in particular the maximum likelihood estimator (MLE). Its primary concern is a detailed error analysis both from a deterministic point of view (sensitivity study) and a stochastic viewpoint (state variable covariance matrix). The latter results are shown to be equivalent to a Cramer-Rao bound, and their relationship to Kalman filters is cited. Various subtleties of interpretation are discussed including several theorems ... |
|
| The Determinants of Base Operating Support Costs |
MAY 1981 |
|
| Authors:
Daniel B. Levine; James M. Jondrow; CENTER FOR NAVAL ANALYSES ALEXANDRIA VA INST OF NAVAL STUDIES
|
| The study analyzes spending on base operating support (BOS) activities at 144 domestic naval installations. Statistical regression techniques are used to derive a cost-estimating relationship (CER) that relates BOS spending to such base characteristics as the number of military personnel and the total building area. The CER is then applied to several issues concerning the management of the naval shore establishment: whether there are economies of scale in BOS spending ... |
|
| Coordinative and Strategic Aspects of Tracking Discontinuous Inputs |
MAY 1981 |
|
| Authors:
Richard J. Jagacinski; Richard A. Miller; Walter W. Johnson; Rajendra B. Nalavade; OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS
|
| Two basic research projects were pursued. One project developed a finite-state model of how an individual tracker coordinates additively coupled position and velocity control sticks to capture a moving target. The model is multi-level. The top level consists of a discrete, probabilistic activity sequence generator closely related to the tracker's plan or general strategy for target capture. Lower levels of detail are more deterministic and indicate how the activities are ... |
|
| Identification of Wheelset/Rail Creep Coefficients from Dynamic Response Data Using the Maximum Likelihood Parameter Identification Technique |
JAN 1979 |
|
| Authors:
William N. Herzog; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
|
| This thesis explores the application of the maximum likelihood parameter identification technique to determine the wheel/rail creep coefficients using dynamic response data. The equations of motion for the dynamically scaled wheelset are presented and the reduced form of the maximum likelihood equations as applicable to the dynamically scaled wheelset model are developed. The maximum likelihood equations were formulated into a maximum likelihood algorithm which was implemented in Fortran IV. Using ... |
|
| Fire: A Deterministic Model for Estimating Survivability through Area Surface to Air Missile Defenses. |
AUG 1977 |
|
| Authors:
Christopher A. Feuchter; Kenneth W. Smith; DIRECTORATE OF AEROSPACE STUDIES KIRTLAND AFB N MEX
|
| One of the recurrent problems associated with the analysis of competing airborne system concepts in a wartime environment is the determination of comparable estimates of attrition from surface-to-air-missiles (SAMs). The FIRE attrition model is a partial solution to this need. It provides attrition estimates of single vehicles or groups of vehicles flying straight and level through a corridor containing up to 10 types of SAMs. The geometric and temporal aspects ... |
|
| On the Theory of Brownian Molecular Movement (Zur Theorie der Brownischen Molekularbewegung) |
JUL 1969 |
39 pages |
| Authors:
Richard Gans; ARMY BIOLOGICAL LABS FREDERICK MD
|
| The method given for Brownian Molecular movement is to prepare a differential equation for the probability of a given position for the particles. This was done by Einstein for the transpositional movement and recently by Perrin for the treatment of a special problem of the rotation around a fixed point. As should be indicated in the paper, this method permits one to treat quite generally the molecular movement of an ... |
|
| ON THE NUMBER OF SOLUTIONS TO THE COMPLEMENTARY QUADRATIC PROGRAMMING PROBLEM. |
JUN 1968 |
|
| Authors:
Katta G. Murty; CALIFORNIA UNIV BERKELEY OPERATIONS RESEARCH CENTER
|
| The relationship between the number of solutions to the complementarity problem, the right-hand constant vector q and the matrix M is explored. Most of the proofs are based on mathematical induction. Counterexamples are given to show that the theorems fail if any of the hypotheses are not satisfied. (Author) |
|
| USE OF THE IMPLICIT FUNCTION THEOREM IN SOLVING SYSTEMS OF EQUATIONS. |
02 FEB 1968 |
|
| Authors:
Marvin J. Goldstein; NAVY UNDERWATER SOUND LAB NEW LONDON CONN
|
| Applications of the implicit function theorem in solving systems of n equations in (n + p) unknowns subject to p nonlinear 'constraints' are discussed. A generalized iterative technique that is defined for a sufficiently restricted 'region' is derived for solving the set of (n + p) equations. The derivation employs Newton's method and assumes that the unconstrained (n + p) system of equations has a local vector function solution that ... |
|
| PRICE AND PRODUCTIVE UNCERTAINTIES IN DYNAMIC PLANNING. |
AUG 1966 |
|
| Authors:
Arthur P. Hurter ; Michael A. Moses; RAND CORP SANTA MONICA CALIF
|
| The model is developed with reference to a single decision maker and incorporates intertemporal and interspatial considerations with some of the important aspects of inventory control models. The model is discussed in terms of an individual farmer attempting to plan his production and sales over an N year planning horizon. A series of models is presented. The first section considers the production and sale of one commodity in a single ... |
|
| UPON AN INVARIANT ASSOCIATED WITH THE EPSILON ALGORITHM. |
JUL 1966 |
|
| Authors:
P. Wynn; WISCONSIN UNIV MADISON MATHEMATICS RESEARCH CENTER
|
| An explicit formula is derived for an invariant associated with the epsilon-algorithm. (Author) |
|
| CONCEPTUAL LEVEL AS A COMPOSITION VARIABLE IN SMALL GROUP DECISION-MAKING. |
FEB 1966 |
|
| Authors:
Paul Stager; PRINCETON UNIV N J DEPT OF PSYCHOLOGY
|
| Decision-making in small groups, varying in composition along a dimension of conceptual level, was investigated from the standpoint of the emergent functional role structure, conflict generation, utilization of conflict in decision synthesis, and information acqusition. The study was directed toward an understanding of the relationship between the conceptual level dimension (the independent variable) and the dependent variables of group information processing structure and specific predecisional processes. On the basis of ... |
|
| DISPERSION TABLES FOR RAYLEIGH WAVES ON A SINGLE SURFACE LAYER. |
OCT 1965 |
|
| Authors:
Harold M. Mooney; Bruce A. Bolt; MICHIGAN UNIV ANN ARBOR INST OF SCIENCE AND TECHNOLOGY
|
| Tables are presented to show the dispersive characteristics for Rayleigh waves on a single elastic layer overlying a uniform elastic half-space. Two standard models are considered, each specified in terms of four parameters: Poisson's ratio in the layer and in the half-space, and the shear velocity and density ratios. Each parameter is varied through eight values, holding the other three parameters constant. For each such structure, results are given for ... |
|
| POLYNOMIALS OF E-X ORTHONORMAL IN THE REGION WHERE ZERO IS LESS THAN OR EQUAL TO X WHICH IS LESS THAN OR EQUAL TO INFINITY, |
MAR 1964 |
|
| Authors:
N. Karayianis; C.A. Morrison; HARRY DIAMOND LABS WASHINGTON D C
|
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