Últimos itens adicionados do Acervo: Escola de Pós-Graduação Naval

A Naval Postgraduate School em Monterey, na Califórnia, é uma escola de Pós-Graduação que pertence à Marinha dos Estados Unidos.

Página 15 dos resultados de 45160 itens digitais encontrados em 0.009 segundos

Fleet Mix Planning in the U.S. Coast Guard: Issues and Challenges for DSS*

Bhargava, Hemant K.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
Fleet mix planning in the U.S. Coast Guard involves determining a combination of naval assets best suited to meet the Coast Guard's future mission requirements while satisfying various resource constraints. In this paper, I describe the problem, and present and discuss certain challenges it raises in the field of decision support systems (DSS). The fleet mix planning problem is fairly unstructured, has a long-term planning horizon and impact, and there is uncertainty about future mission objectives and demand for the fleet's services. As such, I believe, it is a classical application suited to the use of DSS technology, according to accepted definitions of a DSS. However, an examination of DSS theory and technology reveals that current DSS theories and implementations do not adequately address this problem. Thus, the fleet mix planning problem raises several research challenges in the design and implementation of decision support systems. In this paper, I discuss the problem and these challenges in detail, and propose that fleet mix planning could be a useful benchmark problem for DSS; Naval Postgraduate School, Monterey, CA; http://archive.org/details/fleetmixplanning00bhar; O&MN, Direct Funding; NA

A FORTRAN program for solving two-dimensional Euler equations with Godunov methods-user's manual

Eidelman, S.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
A description is given of a program which solves the two-dimensional Euler equations using Godunov Methods. The program was recoded in Fortran from Pascal and accomodates either cascade" or channel flow boundary conditions. The equa - tions, boundary conditions and numerical method are outlined and the structure of the program is given. Results using the Fortran and Pascal versions are briefly compared. The documentation describes a program undergoing development and is not a finished guide for general use.; http://archive.org/details/fortranprogramfo00eide; N62271-83-M-0977; NA

From research to reality a retrospective on the development and acquisition of naval capabilities during the Cold War era : transcript of a seminar held at the Naval Postgraduate School 12 and 13 June 2001

DePoy, Phil E.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
The views expressed in this report are those of the author and do not reflect the offical policy or position of the Department of Defense or the United States Government.; The 200-year plus history of the U.S. Navy is a proud story of battles fought and won, of outstanding leaders afloat and ashore, and of selfless service to our Nation. Equally important, it is a story of the continuing application of new technology to the advancement of naval capabilities. From smooth-bore guns to submarine launched ballistic missiles, from sextants to satellite navigation, from sail to steam to nuclear propulsion, the Navy's progress has been measured by the introduction of technological innovation.; Prepared for: Naval Sea Systems Command; http://archive.org/details/fromresearchtore00depo; N0016701WR10353

General problem solving: Navy requirements and solutions

Lyons, Norman; Knott, Kathleen
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
This research is a preliminary study with two major objectives. The first is to perform a literature survey of the problem solving and artificial intelligence literature relevant to Navy needs. The second objective is to investigate approaches to problem solving that could be taught to Naval officers for use in their jobs. This survey has found a growing interest in the area of problem solving. This interest began with work in cognitive psychology and artificial intelligence in the 1950's and gradually spread to influence education and management. There is little evidence in the literature to indicate that teaching generic problem solving produces improvement in problem solving abilities. One factor complicating this is the lack of adequate definitions of problem solving skills and the lack of test instruments to measure these skills. Some authors suggest that generic problem solving skills are best taught in the context of more conventional courses. The work in teaching generic problem solving is still largely exploratory and unvalidated; Prepared for: Naval Personnel Research and Development Center; http://archive.org/details/generalproblemso00lyon; NA

Graphical analysis of some pseudo-random number generators

Lewis, Peter A. W.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
There exist today many 'good' pseudo-random number generators; the problem is to retrieve them. This document discusses three commonly used pseudo- random number generators, the first being RANDU, a notoriously bad generator, but one which is still occasionally used. The next is the widely used prime modulus, multiplicative congruential generator used in LL-RANDOMII, the Naval Postgraduate School random number package, and the last is the random number generator provided for microcomputers with the DOS operating system. This latter pseudo-random number generator is completely defective. Simple graphical methods for initial screening of pseudo-random number generators are given, and the problems which arise with bad pseudo-random number generators are detailed with graphics. Finally, recent work on obtaining even better pseudo-random number generators is discussed; Prepared for: Naval Postgraduate School Monterey, CA; http://archive.org/details/graphicalanalysi00lewi; NA

How good are Global Newton methods?

Goldstein, Allen A.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
Approved for public release; distribution is unlimited.; Pt.1. 1) Relying on a theorem of Nemerovsky and Yuden(1979) a lower bound is given for the efficiency of global Newton methods over the class C1(mu, Lambda). 2) The efficiency of Smale's global Newton method in a simple setting with a nonsingular, Lipschitz-continuous Jacobian is considered. The efficiency is characterized by 2 parameters, the condition number Q and the smoothness S. The efficiency is sensitive to S, and insensitive to Q. Keywords: Unconstrained optimization, Computational complexity, Algorithms. (JD)--Pt. 2. Newton's method applied to certain problems with a discontinuous derivative operator is shown to be effective. A global Newton method in this setting is exhibited and its computational complexity is estimated. As an application a method is proposed to solve problems of linear inequalities (linear programming, phase 1). Using an example of the Klee-Minty type due to Blair, it was found that the simplex method (used in super-lindo) required over 2,000 iterations, while the method above required an average of 8 iterations (Newton steps) over 15 random starting values. Keywords; Linear programming; Computational complexity. (JHD); Naval Surface Weapons Center...

Hydrodynamic interaction of waves with a large displacement floating body

Garrison, C. J. (Clarence Jimmy)
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
This report describes the analytical method and numerical procedure for the calculation of the wave pressure distribution and resulting induced forces and moments acting on large displacement bodies in the sea. The added mass and damping coefficients for the structure oscillating in all six degrees of freedom is computed. Then, the hydrodynamic coefficients associated with both the wave/structure interaction and the oscillation of the structure are determined by use of a Green's function method using quadralateral elements of constant source strength which applies to large structures of rather general shape. The analysis is based on linear theory and viscous effects are neglected on the basis that the size of the structure is large in relation to the amplitude of the incident wave. Also, the equations of motion for a free-floating body are developed which yields the dynamic response of a floating body with linear mooring line forces. Finally, the computer program capable of carrying out the numerical calculations is outlined and the input/output is discussed in some detail. (Author); supported by the Energy Research and Development Administration, OTEC Program, Washington, D.C.; http://archive.org/details/hydrodynamicinte00garr; NA

Hydrographic data from the pilot study of the Coastal Transition Zone (CTZ) program, 15-28 June 1987

Jessen, Paul F.; Ramp, Steven R.; Clark, Carol A.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
Approved for public release; distribution is unlimited.; This data report presents hydrographic (CTD) data from a cruise off Point arena, CA during 15-28 June 1987. The study area was between 37 deg 40'N to 39 deg 20'N and 123 deg 30'W to 125 deg 30'W. The sampling plan criss-crossed a cold filament rooted near Point Arena, as observed using satellite AVHRR Sea Surface Temperature imagery. A total of 122 CTD casts to 500 m and 30 XBT drops to 750 m were made. The data are presented as individual vertical profiles, vertical sections, and property distributions on horizontal surfaces. The data were collected as part of the ONR Coastal Transition Zone (CTZ) program to study cold filaments, squirts, jets, and mesoscale eddies in the region. Keywords: Sea water temperature, Electrical conductivity, Oceanographic data, California current, Mesoscale eddies, Cold filaments. (EDC); This report is for the research project "Hydrographic Data from the Pilot study of the Coastal Transition Zone (CTZ) Program" sponsored by the Naval Postgraduate School Research Council under Program Element 61153N.; http://archive.org/details/hydrographicdata28junjess; N0001487WR24018

Impulsive loading from a bare explosive charge in space

Falcovitz, Joseph
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
This document considers a platform target subjected to a normal impact of explosive products generated by detonating a bare charge in space. It is suggested that the loading impulse may be approximated by the total momentum of that portion of the fluid which impacts at the target. Assuming impulsive dynamic response, and assuming that the ensuing damage is proportional to the kinetic energy imparted to the structure by the blast, we get a particularly simple law; Damage similar to W to the 2nd power/R to the 4th power (W is charge mass, R is range). This model is an idealization of a solar panel (or antenna) extended in a paddle-like fashion from a relatively rigid and massive core structure. It is also shown that this law implies that no advantage can be realized by re-arranging the mass of a single bare charge in a cluster configuration of smaller sub-charges, which would be dispersed and detonated via an idealized 'isotropic' scheme. Keywords: Gas dynamics; Exhaust plumes; Spacecraft; Prepared for: Strategic Defense Initiative Office; http://archive.org/details/impulsiveloading00falc; MIPR DGAA60045; NA

Interannual variability in sea-surface temperature at one location along the Central California coast

Breaker, L. C.; Lewis, Peter A. W.; Orav, Endel John
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
Sea surface temperature (SST) since March 1, 1971 at Granite Canyon, just north of Pt. Sur, California, are examined for interannual variability. Each of four El Nino episodes occurring over the past 13 years can be easily detected in the raw data. Annual mean temperatures are significantly higher during the El Nino years. The 1982-83 El Nino episode was more intense than the previous episodes; temperatures were as much as 5C above normal during the episode and it lasted for about 20 months. Major abrupt decreases in SST were frequently observed during the spring. These events are identified as the spring transition to coastal upswelling and appear to be most intense following El Nino episodes. Empirical Orthogonal Function analysis of the data indicates that maximum variability in SST's occurs between October and February and that it coincides with the four El Nino episodes occurring over the past 13 years.; Prepared for: Chief of Naval Research Arlington, VA; http://archive.org/details/interannualvaria00brea; N0001484WR24004; NA

Interface of materials and structures on airframes. Part 3, Design problems in aircraft structures including proceedings of Monterey Symposium / [by] Ulrich Haupt.

Haupt, Ulrich
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
The proceedings of the Monterey Symposium on Design Problems in Aircraft Structures provide a basic survey of design problems from the engineer's viewpoint. Further analysis of the present situation draws attention to some essential aspects which are not yet generally recognized. This leads to the conclusion that recent design problems cannot be solved on a technological level alone. An organizational effort is needed to disseminate available information. Beyond this, the complexity of interactions must be understood more thoroughly and this requires an educational effort on a broad basis. A practical and systematic approach toward the solution of these problems is developed. (Author); Naval Air Systems Command Work Request No. WR- 2-6059; http://archive.org/details/interfaceofmater71111haup; NA

Introduction to dimensional analysis and the theory of natural units; NA

Gawain, Theodore Henry
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
Author(s) key words: Dimensional analysis, dimensions, fundamental dimensions, dimensionless numbers, dimensionless coefficients, dimensionless parameters, dimensionless pi's, Pi Theorem, English units, metric units, MKS units, CGS units, consistent units, inertial units, gravitational units, fixed units, standard units, natural units, intrinsic units, generalized units, unit and measure, dynamic similarity, thermodynamic similarity, theory of models, momentum theory, propeller parameters, physical equations, mathematical invariance; http://archive.org/details/introductiontodi00gawa; NA; NA

Junior Officer Retention: Another Perspective

Derr, C. Brooklyn (Clyde Brooklyn)
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
This is a relatively brief, non-data-based article addressing personnel policies associated with officer retention. It cites, applies, and summarizes the author's theories and research findings associated with his officer career pattern study. Recommendations are included.; Organizational Effectiveness Research Program, Office of Naval Research (Code 452); http://archive.org/details/juniorofficerret00derr; N0028-79-C-J314; NA

Injecting New Ideas and New Approaches in Defense Systems: Are 'Other Transactions' an Answer?

Dunn Richard L.
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Relatório
Português
Proceedings Paper (for Acquisition Research Program); Other Transactions'' (OT) Authority permits a form of contracting for research, development and conducting prototype projects which is an alternative to military contracting under the Defense Acquisition Regulations and related statutes and regulations. This research shows that OT contracting can produce results better, more cheaply and more quickly than contracting under FAR. Moreover OT contracting has proved to be attractive to commercial firms that traditionally have spurned DoD R&D business and it has the potential to greatly expand the industrial base available to DoD. OT contracting has been limited by a number of factors. DoD acquisition personnel are generally poorly equipped to engage in free form OT contracting. OTs have also been restricted by a broad misperception of their potential and risks involved. There has been a tendency to restrict OTs to a niche role and to impose restrictions by regulation and statute. DoD could benefit greatly by expanding its use of OTs and recognizing them as an equal alternative to traditional contracting.; Acquisition Research Program

Contract Management Process Maturity:' Analysis of Recent Organizational Assessments

Rendon, Rene G.
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Português
Symposium Presentation (for Acquisition Research Program); Symposium Presentation; Acquisition Research Program

Organizing for a Complex World:'The Way Ahead

David J. Berteau
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Conferência ou Objeto de Conferência
Português
Symposium Presentation (for Acquisition Research Program); Acquisition Research Program

Injecting New Ideas and New Approaches in Defense Systems: Are 'Other Transactions' an Answer?

Dunn Richard L.
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Português
Symposium Presentation (for Acquisition Research Program); Symposium Presentation; Acquisition Research Program

A systems analysis and design proposal for the supply department's plant and minor property process at the Naval Postgraduate School

Ross, Michael L.; Smith, Ralph Q.
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Tese de Doutorado Formato: 231 p.
Português
http://archive.org/details/systemsanalysisd00ross; NA; NA

The transition from brittle to ductile failure on polyethelene.

D'Onofrio, John L.
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Tese de Doutorado Formato: 75 leaves.
Português
http://archive.org/details/transitionfrombr00dono; NA; NA

Airborne passive target motion analysis; NA

Gutzler, Jay A.; Titus, Harold A.
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Tese de Doutorado Formato: 62 p. 28 cm.
Português
Kalman filtering techniques are applied to a two sensor bearings only passive target motion analysis problem. An algorithm is developed to simulate tracking long range maneuvering airborne targets. The target tracking performance of the filter is evaluated using computer generated noisy bearing measurements. The performance of the filter is satisfactory given reasonable initial conditions and measurement noise. The purpose of TMA is to determine the target's position, course and speed through a series of passive noisy measurements. For the air defense scenario, these passive measurements may be lines of bearing (LOB) obtained from the enemy aircraft's jamming strobes or from the electromagnetic radiation of the aircraft's long range targeting radar; http://archive.org/details/airbornepassivet00gutz; NA; NA