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

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Mixed signal processor for a robust symmetrical number system direction finding antenna

Babb, Charles F.
Fonte: Monterey California. Naval Postgraduate School Publicador: Monterey California. Naval Postgraduate School
Formato: xvi, 100 p. : ill. (some col.) ; 28 cm.
Português
Approved for public release; distribution is unlimited.; Approved for public release; distribution is unlimited.; This applied research project has designed, simulated, constructed and tested the performance of a processing system for a prototype direction finding antenna. A mixed signal architecture to derive the direction of arrival from a Robust Symmetrical Number System (RSNS) encoded direction finding array is based on a new phase sampling interferometer approach that can be easily incorporated into established techniques to provide a high resolution, small-baseline array with few number of phase sampling comparators. The approach is based on preprocessing the received signal using the RSNS. The preprocessing is used to decompose the spatial filtering operation into a number of parallel suboperations (moduli) that are of smaller computational complexity. A much higher direction finding spatial resolution is achieved after the N different moduli are used and the results of the low precision suboperations are recombined, in addition to the reduction of the number of possible encoding errors due to the RSNS' inherent Gray-coding properties. This has resulted in a four inch antenna array being able to attain an angular resolution of less than 1.8 degrees with a continuous field of view of 120 degrees. The accompanying electronics occupy two 6 inch by 8 inch printed circuit boards...

A method for mitigating denial of service attacks on differentiated services networks

Braun, Matthew J.
Fonte: Monterey, California: Naval Postgraduate School, 2002. Publicador: Monterey, California: Naval Postgraduate School, 2002.
Formato: xiv, 85 p. : ill. (some col.) ; 28 cm.
Português
Approved for public release; distribution is unlimited; This thesis presents a method for countering Denial of Service (DoS) attacks in networks that provide Quality of Service (QoS) guarantees using Differentiated Service (DiffServ). This approach uses feedback from the DiffServ provider to initiate packet signing at the source. The signature allows the DiffServ provider to distinguish valid packets from malicious packets. This mechanism can also be used to provide key management for other digital signature methods, such as the Internet Protocol Authentication Header (IP AH). However, unlike other methods, our solution requires no encryption or cryptographic processing on a per-packet basis. Instead, it utilizes the sender's ability to alter its packet signatures faster than the attacker can duplicate the changes. This method also avoids the fragmentation and decreased throughput associated with increased packet size of IP AH through use of existing fields in the IP header. This method results in a significant reduction in valid packets that are dropped during a DoS attack. Thus, a DiffServ provider would be able to maintain QoS guarantees during an attack without incurring the overhead associated with cryptographic signatures. A C++ implementation of this DoS countermeasure for the ns2 network simulator and the experimental simulation scripts are included as appendices.; Lieutenant...

Analysis of General Accounting Office, Armed Services Board of Contract Appeals, and Federal Court of Claims decisions on disputes involving performance specifications

Murphy-Sweet, Philip A.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Formato: xii, 87 p. : ill. ; 28 cm.
Português
Approved for public release; distribution is unlimited; Approved for public release; distribution is unlimited; This thesis analyzed rulings and court cases from the General Accounting Office, Armed Services Board of Contract Appeals and Federal Court of Claims with respect to contract protests and disputes involving Performance Specifications. Performance Specifications generally leave the contractor open to decide the best means to accomplish the work of a contract and deliver the product called for in the contract. As compared with Design Specifications, which tell the contractor exactly the processes and materials that must be used to accomplish the task, Performance Specifications only specify the final product to be delivered and the parameters it will fulfill or operate within, and thus leave the contractor open to decide the best processes and procedures to accomplish the task. The use of Performance Specifications in the Defense acquisition process has been mandated from the Secretary of Defense since 1994. The intent in using Performance Specifications was to provide incentive to the contractor to become innovative and resourceful in performing the contract and hopefully, result in cost avoidances and savings to the Federal Government. This thesis will examine protests and disputes from the above sources to evaluate the use of Performance Specifications to date and compile any patterns of success or failure that can then be passed on to today's acquisition workforce.; Lieutenant Commander...

Optimal allocation of assault support aircraft in the sustainment of Marine Corps expeditionary maneuver warfare

Powell, Michael J.
Fonte: Monterey, California: Naval Postgraduate School Publicador: Monterey, California: Naval Postgraduate School
Formato: xx, 56 p. : ill. (some col.) ; 28 cm.
Português
Approved for public release; distribution is unlimited.; As the United States enters a new millennium, the armed forces, and in particular the Marine Corps, face new challenges in the manner that they deploy and operate. Reductions in both personnel and naval shipping, coupled with an ever-changing world political environment, have led to a dramatic shift in the way that the United States must project its power. As recent combat operations in Afghanistan have demonstrated, there is a valid requirement for forces to possess the ability to operate from the sea directly to an objective area with minimal or no amphibious landing support. This thesis provides an analysis of the most advantageous assault support aircraft allocation aboard a Marine Expeditionary Unit (MEU) in operations such as this. With the MEU tasked as one of the prominent fixtures in the timely projection of power ashore for the United States, the capabilities (or lack thereof) of assault support aircraft become increasingly important as ship-to-objective distances increase. Our method of finding an optimal composition of aircraft consists of constructing an Assault Support Optimization Model (ASOM). ASOM is assists us in prescribing an ideal configuration of assault support aircraft while emulating the dynamic amphibious environment. ASOM analyzes the assignment of several aircraft combinations (4 CH-53E/12 MV-22...

Efficient nearly orthogonal and space-filling experimental designs for high-dimensional complex models

Cioppa, Thomas M.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Formato: xvi, 128 p. : ill. (some col.) ; 28 cm.
Português
Approved for public release; distribution is unlimited.; The Department of Defense uses complex high-dimensional simulation models as an important tool in its decision-making process. To improve on the ability to efficiently explore larger subspaces of these models, this dissertation develops a set of experimental designs for searching over as many as 22 variables in as few as 129 runs. These new designs combine orthogonal Latin hypercubes and uniform designs to create designs having near orthogonality and excellent space-filling properties. Multiple measures are used to assess the quality of candidate designs and to identify the best one. For situations in which more than the minimum number of required runs are available, the designs can be permuted and appended to create additional design points that improve upon the design's orthogonality and space-filling. The designs are used to explore two surfaces. For a known 11 dimensional stochastic response function containing nonlinear and interaction terms, it is shown that the near orthogonal Latin hypercube is substantially better than the orthogonal Latin hypercube in estimating model coefficients. The other exploration uses the agent-based simulation MANA to analyze 22 variables in a complex military peace enforcement operation. The need for maintaining the initiative and speed of execution during these peace enforcement operations is identified.; Lieutenant Colonel...

An agent-based architecture for generating interactive stories

Osborn, Brian A.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Formato: xviii, 166 p. : ill. (some col.) ; 28 cm.
Português
Approved for public release, distribution is unlimited.; The Department of Defense relies on modeling and simulation for a variety of purposes, including joint exercise training, developing and evaluating doctrine and tactics, and studying weapon system effectiveness. Advances in technology have made the achievement of technically and visually accurate simulations possible, but little has been done to present realistic scenarios while supporting user interaction. This dissertation describes a multi-agent interactive simulation engine for generating interactive scenarios or stories. A general-purpose multi-agent system simulation architecture, called a Connector-based Multi-Agent System (CMAS) is developed and presented, along with a software agent communication and coordination mechanism. In this architecture, stories are generated through discovery as a by-product of agent interactions, rather than being fixed in advance. The ensuing story adapts to the user's interventions and is closely aligned to the goals of the agents. The multi-agent system design of the story engine has resulted in a data-driven simulation engine, which is domain independent and highly scalable. The story engine is fielded as the underlying simulation engine behind the U.S. Army's America's Army: Soldiers project. The instantiation of the story engine as it applies to Soldiers is presented. As a component of Soldiers...

Analysis of churn and excess material at the Pearl Harbor Naval Shipyard

Cheshure, Kevin; Hunt, Anthony; Bangert, Lawrence; Cheshure, Kevin
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Formato: xii, 30 p : ill. (some col.) ; 28 cm.
Português
MBA Professional Report; Approved for public release; distribution is unlimited.; MBA Professional Report; Approved for public release; distribution is unlimited.; For a Naval Shipyard, the amount of material ordered after beginning an availability (churn) and the amount of material ordered but not used (excess) are key performance indicators. Pearl Harbor Naval Shipyard's metrics indicate that an average of 50% of material ordered during an availability is ordered after the start of the availability and that 15% of material is excess. The NAVSEA goal for both metrics is 5%. We investigate the causes of high rates of material churn and excess at Pearl Harbor Naval Shipyard and provide recommendations for reducing them.; Lieutenant Commander, United States Navy; Lieutenant Commander, United States Navy; Lieutenant, United States Naval Reserve; Lieutenant Commander, United States Navy; Lieutenant Commander, United States Navy; Lieutenant, United States Naval Reserve

Cost benefit analysis of the Department of the Navy's F-5 Tiger II contract

Brown, Jeffery C.; DeGuzman, Robert K., Jr.; Fulford, Thomas S., III; Porter, Jesse E.; Brown, Jeffery C.; DeGuzman, Robert K., Jr.; Fulford, Thomas S., III
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Formato: xii, 121 p. : col. ill. ; 28 cm.
Português
MBA Professional Report; Approved for public release: distribution is unlimited; MBA Professional Report; Approved for public release: distribution is unlimited; This project consists of a Cost Benefit Analysis (CBA) of the costs, issues and effects associated with replacing the F-5E/F Tiger II aircraft with F/A-18A/B. The three alternatives analyzed are (1) continued operation of the F-5E/F, (2) replacement of the F-5 with F/A-18A/B by 2008, and (3) installation of 4th generation pulse-doppler radar in the F-5E/F by 2008. The objective was to compare the three alternatives, choosing the alternative which provides the greatest net benefit and most efficient use of resources. The analysis involved data collection of operational costs per flight hour, total cost over the life of the program, and Contractor supported maintenance. Data for this research project were gathered from the actual maintenance contracts for both the F-5E/F Tiger II and F/A-18A/B aircraft at Fallon, NV, Naval Aviation Systems Command, and OFC-20. Our results suggest that NAVAIR should continue to use the F-5E/F Tiger II aircraft for the VFC-13 adversary training mission through 2014.; Lieutenant Commander, Supply Corps, United States Navy; Lieutenant Commander...

Metric development during the reorganization of the Supply Chain Management Center

Burkman, Douglas W.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Formato: xii, 83 p. : ill. (some col.); 28 cm.
Português
MBA Professional Report; Approved for public release; distribution is unlimited.; MBA Professional Report; Approved for public release; distribution is unlimited.; This MBA Project documents a case study of an ongoing reorganization effort at the Supply Chain Management Center (SCMC), Marine Corps Logistics Command (MARCORLOGCOM), and their use of the Supply Chain Operations Reference (SCOR) Model and the Balanced Scorecard (BSC) to develop performance metrics based on sound processes. The primary focus was on the SCMC. In addition, the Source Management Department, one of SCMC's subordinate units, was a secondary focus. Background information about SCOR and BSC were reviewed, as well as what has been implemented thus far with SCMC. Finally, considerations regarding the assessment and management of suppliers were offered as recommendations.; Captain, United States Marine Corps

The effects of China entering the World Trade Organization on the South Korean wireless telecommunication industry; The effects of China entering the World Trade Organization on the South Korean telecommunication industry

Conner, William J.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Formato: xii, 69 p. : ill. ; 28 cm.
Português
Approved for public release; distribution unlimited; This thesis investigates the effects of China entering the World Trade Organization on the South Korean wireless telecommunication industry. Of particular interest, this thesis explores whether the South Korean wireless telecom industry will benefit from China's accession into the WTO. The working hypothesis of the thesis is that South Korean wireless telecom companies will receive far-reaching economic benefit from China's entry into the WTO. Additionally, this thesis explores the effects the entry in the WTO will have on China's telecom policy toward allowing foreign companies to own and operate parts of the network.; Captain, United States Marine Corps

Supply chain analysis of Gabilan Manufacturing Inc.

Darnell, Andrew; Hodgson, Daniel; Fouts, Miguel; Kachenchai, Daniel; Neuman, James; Darnell, Andrew; Hodgson, Daniel; Fouts, Miguel; Kachenchai, Daniel
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Formato: viii, 123 p. : col. ill.; 28 cm.
Português
Approved for public release; distribution is unlimited.; MBA Professional Report; Approved for public release; distribution is unlimited.; The purpose of this MBA Project was to investigate and provide alternative supply chain management strategies to assist Gabilan Manufacturing Inc. in reducing supply chain costs. This project was conducted with the sponsorship and assistance of Gabilan Manufacturing Inc. There were two primary goals of this project. The first was to identify and document the impact of forecasting errors in an environment where customer forecasts are available to the vendor. The second was to investigate the costs associated with relocating cutting operations as well as the procurement impact of a new cutting machine. Both of these goals relate directly to the overall effort to reduce supply chain costs without a loss of service level to Gabilan's customer.; Lieutenant Commander, United States Navy; Lieutenant Commander, United States Navy; Lieutenant Commander, United States Navy; Lieutenant, United States Navy; Lieutenant Commander, United States Navy; Lieutenant Commander, United States Navy; Lieutenant Commander, United States Navy; Lieutenant Commander, United States Navy; Lieutenant, United States Navy

DoD supply chain implications of radio frequency identification (RFID) use within Air Mobility Command (AMC)

Clark, George W.; Hozven, Marcelo A.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Formato: xx, 77 p. : ill. (some col.); 28 cm.
Português
Approved for public release; distribution is unlimited.; MBA Professional Report; Approved for public release; distribution is unlimited.; The purpose of this MBA project is to identify the existing and potential value of Radio Frequency Identification (RFID) use in the operations of Headquarters Air Mobility Command (HQAMC) and its worldwide network of aerial ports. The project seeks to determine how the applications of RFID within AMC can add value to AMC's operations and the operations of other DoD supply chain members. In doing so, the project describes the technical attributes of DoD's RFID tags and infrastructure, AMC's legacy Automated Information System (AIS) known as Global Air Transportation Execution System (GATES), and AMC's role within its supply chain. The project includes a discussion of potential AMC and DoD supply chain RFID applications and resulting potential value. Ultimately, the project offers a process for creating a robust RFID infrastructure.; Lieutenant, Chilean Navy; Lieutenant, Chilean Navy; Lieutenant, United States Naval Reserve

A metric model for Intranet portal business requirements

Jacoby, Grant A.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Formato: xviii, 173 p. : col. ill. ; 28 cm.
Português
Approved for public release; distribution is unlimited; This research provides the first theoretical model--the Intranet Efficiency and Effectiveness Model (IEEM)--for the Family of Measures approach to measure Web activity as well as a holistic framework and multi-disciplinary quality paradigm approach not previously derived in viewing and measuring intranet contributions in the context of a corporation's overall critical business requirements. This is accomplished by applying a balanced baseline set of metrics and conversion rations linked to business processes as they relate to knowledge workers, IT managers and business decision makers seeking to increase value. It also outlines who should conduct these measurements and how in the form of a business intelligence team and provides a means in which to calculate return on intranet metrics investment (ROIMI) with a common unit of analysis for both aggregate and sub-corporate levels through forms of the Knowledge Value Added (KVA) and Activity Based Costing (ABC) methodologies.; Lieutenant Colonel, United States Army

Evaluation and innovation in the Navy's Personnel Research Laboratories. II, Development, validation, and trial application of a computer program to facilitate judgmental appraisal

Arima, James K.; Mister, Richard W.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
The purpose of the study was to develop, validate, and test apply a procedure for obtaining qualitative judgments economically and efficiently. The Ford procedure for scaling partially ordered sets of rankings was programmed and validated using an abstract judgmental tasks with an extrinsic criterion. It was given a trial application requiring the ordering on merit of current personnel research projects. Both validation and trial application results were highly satisfactory. It was concluded that the Ford procedure could be used to obtain scaled qualitative judgments in a wide variety of settings with accuracy, efficiency, and economy. Flow charts, data setup, and the complete computer program are given; http://archive.org/details/evaluationinnova2051arim; NA

Evaluation of the Catalonian Parliament, 1980-1984

Carreras, Francesc; Owen, Guillermo
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
We analyze here the process of coalition formation in the Catalonian Parliament. Using Owen's modification of the Shapley Value (for games with a Priori Unions), we show that the actual result is not unreasonable, given the underlying political structure.; Prepared for: Naval Postgraduate School Monterey, CA; http://archive.org/details/evaluationofcata00carr; NA

Evaluation of GRE data: An experiment at NPS

Barr, Donald Roy; Howard, Gilbert T.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
U.S. Naval Officers reporting to the Naval Postgraduate School as students are required to take the graduate record examination (GRE). An analysis of the GRE scores obtained to date and of other factors, such as age, sex, years since receiving a baccalaureate degree, and Academic Profile Code (APC) scores was performed. The analysis was based on data for approximately 320 students who have completed at least three quarters at NPS. Two measures of student academic performance were considered: graduate grade point average and total grade point average. The analyses performed are not exhaustive; other analyses could well provide further insights and other variables might be included in future analyses. Additionally, the sample size of tested students who have completed several quarters of work at NPS will grow. Regression analysis was used to investigate which components of the GRE and APC scores (together with age and years since graduation) are important in predicting academic performance as measured by grade point averages (GPA's). In addition, several multivariate analysis methods were used in an attempt to find predictors of marginal academic performance (GPA's less than 3.0); Prepared for: Naval Postgraduate School, Monterey, CA.; http://archive.org/details/evaluationofgred00barr; NA

An examination of the USMC Combat Active Replacement Factor (CARF) determination system

Lindsay, Glenn F.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
Combat Active Replacement Factors, or CARFs, are logistics planning factors currently used by the U.S. Marine Corps as estimates of equipment losses in future conflicts. Adapted Army replacement factors are currently a prime source for CARF values, but verification of these values is difficult. This report examines two alternate means of estimating CARF values for comparative purposes. The first employs mean-time-to-loss estimates for various equipment types, and several scenario-oriented models are given for mapping these values into CARFs. Professional military judgement provides another way of estimating CARF values, and a procedure is given by which the judgment of many experts can be aggregated to provide CARF information. A demonstraction of the procedure is given, employing actual data from twenty-three judges who rated 'chance of loss' for twenty-one equipment types. Keywords: Replacement factor, combat losses, scaling; Naval Postgraduate School, Monterey, CA; http://archive.org/details/examinationofusm00lind; NA

Financial management reform in the federal government

Jones, Lawrence R.; McCaffery, Jerry L.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
Financial Management reform initiatives leading to passage of the Chief Financial Offices Act (CFO Act) in the 1 980's are detailed in this report. The new requirements under the CFO Act are explained. Some of the issues related to implementing the CFO Act are analyzed and conclusions are provided.; Office of the Comptroller, Department of Defense; http://archive.org/details/financialmanagem00jone; Naval Postgraduate School & the Naval Sea Systems Command, DFR; NA

Finite birth-and-death models in randomly changing environments

Gaver, Donald Paul; Jacobs, Patricia A.Latouche, G. (Guy)
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
This report provides computational methods for studying properties of birth-death processes whose transition rates (infinitesimal generator) varies in accordance with a random, 'environmental', process. In particular, the models may be used to represent the availability fo redundant systems subject to external shocks or other 'common cause' failures. These models also represent search for an object when the search environment (e.g. weather) varies randomly in time. (Author); Office of Naval Research; http://archive.org/details/finitebirthandde00gave; N0001481WR10001; NA

First-generation numerical ocean prediction models : goal for the 1980's

Elsberry, Russell L; Garwood, Roland W
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
Português
This report is based on a talk presented at the Geophysical Fluid Dynamics Laboratory, Princeton, NJ during November 1979.; Using the experience of numerical weather prediction during the 1950's and 1960's as a model, a case is presented for development during the 1980's of an ocean prediction capability. Examples selected from recent research at the Naval Postgraduate School are used to illustrate some aspects of the theoretical background, representation of physical processes, observational-support systems and the justification for a first-generation ocean prediction system; Prepared for: Naval Ocean Research and Development Activity Office of Naval Research, Ocean Science and Technology; http://archive.org/details/firstgenerationn00elsb; NA