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Naval Postgraduate School

Dudley Knox Library

Included here are  Masters' Theses, Doctoral Dissertations and other degree-earning works by students of the Naval Postgraduate School in Monterey, California, as well as some NPS faculty-authored Technical Reports.  This content has been shared from the NPS Archive: Calhoun.



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Naval Postgraduate School
by Meilandt, Ralph L.
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Approved for public release, distribution unlimited.
Naval Postgraduate School
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The purpose of this research is to define and discuss the 'best value' concept and how it relates to the procurement of engineering and technical services. The research was conducted by a review of regulations and policy guidance, interviews with Government and defense industry personnel, and visits to Navy Contracting Activities that procure engineering and technical services. The intent of the study was to analyze how the 'best value' concept is currently implemented, problems with...
Naval Postgraduate School
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ADA761463
With advances in computer and sensor technologies, autonomous underwater vehicles (AUVs) are now capable of reaching a level of independent action once thought impossible. Through the use of cooperative behaviors it is possible to further increase their autonomy by allowing multiple operating AUVs to simultaneously coordinate their activities in order to improve the efficiency and effectiveness of the overall system. This thesis research defines the algorithms and rules needed to perform...
Topics: Remote submersibles, Underwater acoustics, Autonomous Underwater Vehicle (AUV), Cooperative...
Naval Postgraduate School
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This paper focuses on the impact that the 9/11 terrorist attacks have had on the U.S. construction industry. The paper breaks the construction project life cycle down into three phases -- Initiation, Design, and Procurement/Construction -- and examines the impact the attacks have had on each one. In terms of the Initiation Phase of construction, the attacks have had an impact on the kinds of projects that are being funded today. For example, the workloads of certain sectors of the construction...
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Topics: MILITARY INTELLIGENCE, CRISIS MANAGEMENT, LEADERSHIP, INTERNATIONAL RELATIONS, genealogy
Naval Postgraduate School
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Thesis (MS)--U.S. Naval Postgraduate School, 1958
Topic: Physics
Source: half
Naval Postgraduate School
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Topic: Management
Naval Postgraduate School
by Minor, Morgan M.
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Miscategorization of perceived enemies has plagued the United States since September 11, 2001. With the rise and decline of the Islamic State, this thesis seeks to determine how preparations to handle those suspected of terrorism have changed. Since the Islamic State entered the Western psyche, American foreign fighters have left home only to return from the battlefield disillusioned. Informed by needs theories, this thesis explores idiosyncratic radicalization trajectories of American foreign...
Topics: radicalization, foreign fighters, Islamic State, defector(s), returnee, counterterrorism,...
Naval Postgraduate School
by Natale, Joseph John
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This thesis determined the feasibility of developing a 16-inch, gun-launched anti-satellite weapon. The general performance capability of rocket-and scramjet-boosted, gun-launched vehicles is examined with regards to propelling a miniature homing vehicle to a satellite intercept altitude. Rocket and scramjet boost vehicle performance is modeled and optimum trajectories are determined. A low gun elevation at launch and a pop-up manuever are required to maximize the scramjet boost vehicle...
Topic: Engineering Science
Naval Postgraduate School
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Approved for public release; distribution unlimited.
Topic: Oceanography
Naval Postgraduate School
by Shuman, Paul Dennis.;Leipper, Dale Frederick.
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Thesis (M.S. in Ocean.)--Naval Postgraduate School, 1974. Issued as Naval Postgraduate School Technical Report (NPS-58LR74031) in conjunction with D.F. Leipper
Topic: Oceanography
Naval Postgraduate School
by Thomas, George W.;Kocher, Kathryn M.;Moore, Thomas P.;Roberts, Benjamin J.
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Title from cover
Topics: ARMY PERSONNEL., MILITARY RESERVES., NURSES., PERSONNEL RETENTION., RECRUITING., PERSONNEL...
Naval Postgraduate School
by Thomas, George W.;Kocher, Kathryn M.;Roberts, Benjamin J.
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Topics: ACTIVE DUTY., ARMY PERSONNEL., NURSES., RECRUITING., PERSONNEL RETENTION., MILITARY SEPARATION.
Naval Postgraduate School
by Roberts, Benjamin J.Thomas, Kenneth Wayne, 1943-;Davis Mark E.
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Shipping list no.: 1998-0195-P
Topic: ATTITUDES(PSYCHOLOGY).CIVILIAN PERSONNEL.NAVAL PERSONNEL.
Naval Postgraduate School
by Roberts, Benjamin J.Thomas, Kenneth Wayne, 1943-;Davis, Mark E.
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Title from cover
Topic: PERSONNEL DEVELOPMENT.ENGINEERS.JOB SATISFACTION.SCIENTISTS.
Naval Postgraduate School
by Frostenson, Nels A.;Myers, Glen A.;Sonnefeld, Michael D.
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Thesis advisor, Glen A. Myers
Topic: Electrical and computer engineering
Naval Postgraduate School
by Frostenson, Nels A.; Sonnefeld, Michael D.
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This research considers a particular form of M-ary signaling called 2 FSK/QPSK. It is a unique way of combining two modulation methods to produced an 8-ary signaling technique whose noise performance is shown to be significantly better than 8-PSK. A transmitter and receiver for 2 FSK/QPSK is designed, built, tested and analyzed. Theoretical and experimental results are compared using a plot of probability of bit error versus signal-to-noise ratio (SNR). Known theoretical performance of 8-PSK is...
Topics: Electrical and computer engineering, quadrature phase shift keying (QPSK), frequency shift keying...
Naval Postgraduate School
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Gallium Nitride (GaN) High Electron Mobility Transistors (HEMTs) are microwave power devices that promise to revolutionize the capability of Navy radar systems. The Office of Naval Research is currently finding basic research of developing microwave power amplifiers for use in future radar systems. This thesis incorporates piezoelectric (PZ) equations in the Silvaco Atlas software for modeling GaN/AlGaN structures. The PZ effect enhances a two dimensional electron gas at the GaN/AIGaN interface...
Naval Postgraduate School
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Topics: Electrical engineering, NA
Naval Postgraduate School
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Available from National Technical Information Service, Springfield, Va
Topic: Electrical engineering
ADINA, a finite element program for automatic dynamic incremental nonlinear analysis, is used to conduct a stress analysis of the Tarawa class (LHA-1) superheater header. This investigation is sponsored by the Naval Sea Systems Command (NAVSEA) as a result of cracking in the superheater header tube attachment weld. A 2-dimensional solid axisymmetric finite element model was developed using both a coarse and fine mesh. Both pressure and thermally induced stresses were studied. A 3-dimensional...
Topics: Mechanical engineering, thermal stress analysis
Thesis advisor(s): Cantin, Gilles
Topic: Mechanical engineering
Naval Postgraduate School
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The mission of the Manpower Management Enlisted Assignment Branch (MMEA) is to enact ‘Marine Corps policy to classify, assign, and counsel all active duty enlisted Marines to effectively staff the active duty enlisted requirements of all worldwide Marine Corps Activities, by retaining only the most qualified Marines. Special attention is given to balance the needs of the individual Marine with the needs of the Marine Corps.’ However, balancing the Corps’ needs and individual Marines’...
Topics: Marine Corps, Assignment, Manpower, Retention, Quality of Life, Personnel, Requirements,...
Naval Postgraduate School
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On September 25, 2015, President Barack Obama and President Xi Jinping announced the formation of a U.S.–China Cyber Agreement. After years of suspected cyber-enabled economic espionage, many analysts considered the Agreement a surprising and welcome development. Still, other analysts remained pessimistic as to the Agreement's potential impact in changing behavior, predicting Chinese behavior would remain unchanged or be altered in a way that would not significantly reduce the level of cyber...
Topics: United States, China, cyber, cyber agreement, FireEye, Hackmageddon, Schmitt Analysis, cyberattack,...
Naval Postgraduate School
by Blandin, Mathiew; Brux, Jeramy; Caraway, Christopher; Cook, Jamie; Fromille, Samuel; Haertel, David; Hall, Steven; Kish, John Paul; SEA Cohort SEA-19A; Szachta, Stephen
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Potential adversaries throughout the world continue to acquire and develop sophisticated multi-layered, anti-access, area-denial (A2AD) systems. To maintain its maritime superiority, the United States must continue to innovate systems that are capable of operating in and defeating these A2AD environments. In particular, command of the undersea domain remains vital and will increasingly be critical in facing this future battle space. The challenges our nation faces, however, are not limited only...
Topics: Unmanned Undersea Vehicles, Undersea Dominance, Autonomous Control, Undersea Force Structure
Topics: Oceanography, NA
ADA112431
Topic: Oceanography
Source: half
Naval Postgraduate School
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Modern slavery, commonly referred to as human trafficking, is one of the highest sources of transnational organized criminal revenue generated from private economy slavery and state-imposed forced labor, with the bulk of known profits coming from sex exploitation. Second only to drug trafficking, modern slavery is the source of major global commerce. It also can serve as an open recruitment pool for combatants, brides, and sex slaves by extremist groups. Modern slavery, including child forced...
Topics: modern slavery, slavery, trafficking in persons, forced labor, globalization, transnational crimes,...
Artificial intelligence (AI) is a field of research with the potential to radically change society’s use of information technology, particularly how personal information will be interconnected and how private lives will be accessible to cybercriminals. Criminals, motivated by profit, are likely to adapt future AI software systems to their operations, further complicating present-day cybercrime investigations. This thesis examines how transnational criminal organizations and cybercriminals may...
Topics: transnational organized crime, Darknet, emerging technology, homeland security, artificial...
Naval Postgraduate School
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Relationships empower Special Operations Forces (SOF) to perform as a highly skilled and reliable cadre in collaboration with local partner forces to prevent and solve shared problem sets, often accomplishing more with less. Since 9/11, however, relationships between SOF and their partners have not always been properly built and maintained. The authors trace the causal effects of constraints, trainings, and incentives and their impact on the current North Atlantic Treaty Organization (NATO) SOF...
Topics: Special Operations Forces, SOF, irregular warfare, IW, unconventional warfare, UW, asymmetric...
The study of a law enforcement response to a national movement is a homeland security issue. How America polices its population establishes the benchmark for how it treats the world and is worthy of exploration. What can the experiences of four major U.S. cities, in their response to the Occupy Movement, tell us about using emergent strategies for policing protest in the twenty-first century? In the fall of 2011, the Occupy Movement protests swept across the United States in a matter of weeks....
Topics: Occupy Movement, policing protest, dissent, negotiated management, strategic incapacitation,...
Twenty-first-century law enforcement organizations face a new and significant challenge- homeland security. On September 11, 2001, local law enforcement agencies throughout the United States were thrust into the \"war on terrorism.\" The current law enforcement business-as-usual attitude and incremental programmatic responses do not ensure a long-term success. Any act of terrorism will initially be a local issue that requires immediate response by various local agencies, such as...
Topics: Law enforcement, National security, United States, Medicine, Preventive, Terrorism
Naval Postgraduate School
by Kyriakidis, Kleanthis
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From the early 1990s, and especially since September 11, 2001, numerous scholars, politicians and political analysts alike have characterized terrorism as global, religious, irrational and rising. The theory of the emergence of this "new terrorism" is well established and can be considered as conventional wisdom. The main characteristics of the "old terrorism", its political, local and rational character, are obsolete in accordance with this line of thinking. In particular,...
Topics: Terrorism, Political violence, Religious aspects, Prevention
As a result of the federal government's shortcomings in thwarting illegal immigration, state and local law enforcement agencies are now largely shouldering the problem of criminal activity associated with illegal immigration. Section 287(g) of the INA allows state and local police to actively participate in immigration enforcement, but has raised concerns about how to balance public safety with concerns of a \"chilling effect\" on the immigrant community. This thesis surveyed current...
Topics: 287(g), Immigration Enforcement, chilling effect
Naval Postgraduate School
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Rough surface scattering plays a crucial role in the statistics of acoustic propagation signals, especially at mid-frequencies and higher (e.g., acoustic communications systems). For many years, the effects of rough surface scattering were computed using simple models that were applied in two dimensions (2-D) only. A prescribed method of computing 2-D rough surface scattering directly in a parabolic equation model based on the Split-Step Fourier algorithm was introduced by Tappert and...
Topics: Acoustic Propagation, Acoustic Scattering, Sea Surface Perturbations, Split- Step Fourier...
Naval Postgraduate School
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The objective of this thesis was to study whether simplified three dimensional finite element models could be used as a micromechanical model for analysis of stresses at the fiber and matrix level while providing smeared composite properties for the global structural analysis. The mathematical model was programmed using the MATLAB engineering software. For considering interface cracks between the fiber and matrix, springs were modeled in the connecting nodes between the fiber and matrix on each...
Naval Postgraduate School
by Barnes, Jonathan D.
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Naval Sea Systems Command (NAVSEA) initiated an investigation of the Tarawa Class (LHA-1) superheater headers due to the reoccurance of numerous crack and leaks in the tube to header attachment welds. A dimensional solid finite element model was developed to simulate the superheater header geometry. ADINA, a finite element program for automatic dynamic incremental nonlinear analysis, is used to evaluate the stresses present in the header particularly the stresses that are present in the tube to...
Topics: Thermal stresses, Superheater headers, ADINA
Naval Postgraduate School
by Barnes, Jonathan D.;Cantin, Gilles.
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Thesis advisor, Gilles Cantin
Naval Postgraduate School
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When the largest earthquake ever recorded in Japan’s modern history struck on the afternoon of March 11, 2011 (3.11), the resulting tsunami and nuclear disaster contributed to the crisis quickly spinning out of control. While the central government’s reaction was lambasted by the media and the public, the positive reception of the Japanese Self-Defense Force’s (SDF) response efforts represented a possible shift in the place and perception of the organization. This research seeks to find...
Topics: Japan, Self Defense Force, SDF, Civil-military relations, tsunami, earthquake, Fukushima, 3.11,...
Naval Postgraduate School
by Khan, Asfandyar
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The purpose of this thesis is to determine the impact of a contingency operation on Army dwell time. The Department of Defense (DOD) goal for the active Army is for every one year a unit is deployed, the unit gets two years at home. We use a simulation to model the number of times a Brigade Combat Team (BCT) deploys in support of a contingency operation over a specified period of time. This enables us to estimate the amount of time a unit was deployed and its dwell time. The results of the...
Topics: simulation, Army brigade combat teams, Army end strength, boots on the ground to dwell time ratio
Naval Postgraduate School
by Foley, James Kevin.
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Available from National Technical Information Service, Springfield, Va
Topic: Physics
Naval Postgraduate School
by Foley, James Kevin.
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LEDs of the ternary alloy GaAs.7P.3 were irradiated with a 30 MeV electron beam. The effects this exposure had on peak wavelength, absolute and relative light output intensities, and current-forward bias characteristics were studied. A simple model of LED current controlling mechanisms is described and a mathematical approach for deriving a descriptive damage-constant is provided. Observed irradiation effects consisted of increased current and decreased light output intensity for a given...
Topics: Physics, LEDs, GaAs₁₋ₓPₓ, electron beam, Bremsstrahlung losses, electroluminescence, damage...
Naval Postgraduate School
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Our national security and prosperity depend in part on secure and competitive ports. Effective public and private sector collaboration is needed in a world with myriad security challenges and fierce global competition. Although steps have been taken in the years since 9/11 to realize these twin goals, much more needs to be done. The current maritime domain awareness (MDA) paradigm needs to be expanded to provide comprehensive awareness of intermodal operations in our ports. An effective Open...
Topics: Situational awareness, Military intelligence, Civil defense, United States, Harbors
360-degree feedback is a personal development and appraisal tool designed to quantify the competencies and skills of fellow employees by tapping the collective experience of their superiors, subordinates, and peers. Substantially better than the hierarchical, single-source assessments employees are familiar with, this multi-source system provides participants with a comprehensive interpretation of their performance from numerous perspectives within the organization. The objective of this thesis...
Topic: 360-degree feedback (Rating of employees)
360-degree feedback is a powerful multi-dimensional leadership development tool that draws upon the knowledge of people within a person's own circle of influence: supervisors, peers, and direct reports. It is most widely used for development, yet many organizations also use it for administrative purposes. This thesis examines the efficacy of 360- degree feedback through an in-depth research review that establishes when 360-degree feedback is effective and what conditions enhance or detract from...
Naval Postgraduate School
by Andersland, David L.
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The purpose of this thesis is to provide an overview of the requirements and protocols required for the implementation of an Ethernet LAN. The appendix to this thesis is a User's Manual for the 3Com EtherSeries Network version 2.4. the manual is specifically written for use in the Administrative Sciences Department Information Systems lab at the Naval Postgraduate School.
Topics: Local area networks, Networks
Naval Postgraduate School
by Andersland, David L.
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Thesis advisor: Schneidewind, Norman F
Naval Postgraduate School
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In modern combat operations today the display of operational data is still tied to stove-piped and proprietary systems and software. Additionally, combat systems are still using 2D displays of the battlefield in order to reflect a picture of the battlefield to the warfighter. Stepping away from stove-piped and proprietary systems and reflecting a 3D picture of the battlefield is the direction that this thesis research explores. Research is conducted to explore technologies needed to provide...
Topics: Three-dimensional imaging, Three-dimensional display systems, XML (Document markup language), Java...
Naval Postgraduate School
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Spectral Imagery provides multi-dimensional data, which are difficult to display in standard three-color image formats. Tyo, et al. (2001) propose an invariant display strategy to address this problem. This approach is to mimic the dynamics of human perception. The dimensionality of the data are reduced by using a Principal Component (PC) transformation, and then displayed by making used of a Hue, Saturation, and Value (HSV) display transform. This study addresses the PC transformation strategy...
Topics: Three-dimensional imaging, Imaging systems, Hyperspectral imagery, 3D visualization, X3D, JAVA Xj3d...
The military is increasingly reliant on communication networks for day-to-day tasks as well as large-scale military operations. Tactical communications networks are growing progressively more complex as the amount of information required on the battlefield increases. Communication planners require more advanced tools to perform and manage signal-planning activities. This work examines the use of 3D visualizations to assist in tactical signal planning. These visualizations are developed using...
Naval Postgraduate School
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Thesis advisor, Michael J. Zyda
The objective of this research is to analyze the impact of increased annual training requirements on the reserve component, specifically, the 4th Assault Amphibian Battalion. Time is a persistent constraint that the reserve force contends with to accomplish annual general military training requirements and mission essential tasks. Currently, there are 18 annual general military training requirements the reserve component must accomplish. Previous studies have attempted to reduce and combine...
Topics: 4th Assault Amphibian Battalion, Marine Corps Reserve, reserve component, training, general...
Naval Postgraduate School
by de Andrade Martins, Madjer
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The employment of unmanned aerial vehicles is currently a fact in modern warfare. The benefit of using drones as a swarm, working together to accomplish a task, will help save lives; however, the communication among drones within a swarm is a challenge with the available technology due mainly to the power requirements to operate in a small device. Inspired by the massive machine-type communication 5th generation mobile networks, this work offers a novel method of identification and ranging for...
Topics: 5th generation mobile networks, swarm drones, swarming drones, drones, drones swarm, UAV, unmanned...
Naval Postgraduate School
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Channel-response-based physical-layer authentication systems are challenged by the use of millimeter-wave frequencies for wireless communications due to the reduced coherence time and the sparsity of multipath components typically encountered. We examine how such an environment makes the assumptions of previous works in physical-layer authentication unrealistic, and present an approach that can tolerate such challenges by anticipating channel-response features based on relatively simple...
Topics: physical-layer authentication, millimeter-wave channel response, planar estimation, geometry-based...
Naval Postgraduate School
by Anderson, J. B.
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The purpose of this Technical Note is to serve as an operating guide for the 76-inch diameter centrifuge facility. The operating procedures recommended in this manual evolved during the initial six-month operating period during which propellant burning ra
Topic: *CENTRIFUGES , *BURNING RATE , *INSTRUCTION MANUALS , *SOLID PROPELLANTS , COMBUSTION , OPERATION ,...
Source: half
The world's shipping lanes are an area of intense focus in the Global War on Terror. Every day millions of tons of cargo are shipped through thousands of ports. Most cargo is harmless, however, some ships carry the weapons and human operators of terrorist organizations. To prevent the spread of weapons and terror suspects on the sea lanes, the cargo, passengers, and crew of these vessels must be subject to a level of scrutiny that is orders of magnitude greater than current efforts. The ability...
Topics: Cargo ships, Civil defense, Law enforcement, Prevention, Situational awareness, Terrorism, United...
In 2019, only twelve U.S. states/territories required the Emergency Communications Officer (ECO) to meet hiring standards, twenty-nine required basic training standards, twenty-three required continuing-education standards, and twenty-four required use of pre-arrival medical instruction protocols. Furthermore, the federal government misclassifies the profession within its Office and Administrative Support occupational grouping, as opposed to the Protective Service occupational grouping. There...
Topics: 9-1-1, 911, public safety telecommunicator, public-safety Telecommunicator, emergency dispatcher,...
Naval Postgraduate School
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With the demise of Soviet Union, the U.S. Navy found itself without an adversary that could challenge its conventional war-fighting capability. It sought relevance and had to decide where to accept budgetary reductions. Abandoning high-dollar weapon systems and accompanying tactics became a tough issue. Throughout the cutbacks, naval aviation remained at the heart of the Navy’s force. Naval aviation received support even though much of its capability outpaced all potential adversaries....
Topics: Naval Aviation, Maritime Strategy, Bureaucratic Politics, Naval Strategy, Aircraft Carriers
Naval Postgraduate School
by Alger, Terrence Francis
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This experiment was conducted to learn experimental techniques for studying Thomson Scattering at an angle of 90° from a laboratory plasma. A successful method of canceling the plasma radiation was employed by using a Calcite Slab to separate the plasma radiation into two equal intensity beams which self canceled when put through a- differential amplifier. Scattered light from the plasma was not observed due to the noise level of the photomultipliers and the reflections from the plasma chamber.
Topic: Physics
Naval Postgraduate School
by Alger, Terrence Francis
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ADA709932
Topic: Physics
Source: half
Thirty-three local emergency medical services (EMS) authority agencies serve the 58 counties in California. A local EMS authority (LEMSA) in California governs either EMS providers in a single county or several counties combined. Each LEMSA dictates widely different treatment and transport protocols for its paramedics. Preliminary data for this thesis substantiate previously published literature, which shows broad disparities in prehospital care and patient outcomes among LEMSA jurisdictions in...
Topics: emergency medical services, EMS, paramedic, emergency medical technician, EMT, local emergency...
The output from a conventional laser is a spontaneous burst of radiation which lasts about one microsecond. If now the reflectivity of one of the two \"mirrors \" in the system is controllable, it is possible to develop laser system conditions which permit the generation of high peak-power pulses with a pulse width of about 30 nanoseconds. Such a system utilizes the principle of regeneration modulation and has been successfully applied to the production of single high peak-power...
Topic: Electronics
Naval Postgraduate School
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Thesis (M.S.)--Naval Postgraduate School, 1963
Topic: Electronics
Source: half
This work investigated the sumertime northwestward propagating waves over the tropical western North Pacific and their relationship with tropical cyclone activities. The 15-season (May-October 1974-1988) Navy tropical global band data were separated into three groups according to the degree of organization in the multiple-set canonical correlation (MCC) modes that were computed from the surface v wind. Groups A (6 seasons) and B (5 seasons) showed orderly large-scale propagating patterns at the...
Naval Postgraduate School
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Topic: NA
Naval Postgraduate School
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ADA083854
Source: half
Naval Postgraduate School
by Jones, Mary J.
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The attention that SARS created in 2003 has influenced public and political perceptions about the risks associated with infectious diseases and the role the public health system should play in national security. This comparative case study was conducted to examine the Canadian public health's system response to SARS in order to formulate recommendations for the U.S. public health system. This analysis demonstrated that the governmental organizational structure of the U.S. public health system...
Topics: Public health, National security, Communicable diseases, United States, Prevention, Public health...
Naval Postgraduate School
by Tysver, Joseph Bryce, 1918-
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Title from cover
Topic: FLUORESCENT SCREENS.PHOTOCHEMISTRY.COLOR VISION.
"September 1997."
Space considerations onboard naval surface ships frequently preclude adequate separation between high frequency (HF) transmit antennas and HF receive only antennas. As a result, high power shipboard emanations (for example Link- 11), interfere with low power signals of interest operating within the same frequency band. Symmetrical Number System (SNS) digital antennas provide high resolution direct digitization of wideband signals with excellent in band signal rejection characteristics, which...
Topics: Analog-to-digital converter, Mach-Zehnder interferometer, Symmetrical number system, Digital...
Naval Postgraduate School
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Available from National Technical Information Service, Springfield, Va
Topic: Electrical and computer engineering
Naval Postgraduate School
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A need exists for non-volatile, reliable and radiation hardened mass data storage devices for space applications. Tape recorders modified for use in the space environment have proven both expensive and unreliable. The use of magnetic bubble memory as a recording medium in recent space projects offers a promising alternative to tape recorders. This thesis develops the design of a 32-bit microprocessor based advanced solid state data recorder for space based applications utilizing two-megabyte...
Topics: Electrical and computer engineering, magnetic bubble memory, space data recorder, tape recorder...
Naval Postgraduate School
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This thesis presents a fully coupled, quasi-3D analysis of rotor blade flutter that can accommodate forward flight conditions. The rotor blade is modeled as a uniform beam, taking the average characteristics of a real blade between 20% and 90% of its length. Applying Rayleigh's method, the first few bending and torsion normal mode shapes and natural frequencies are determined, and then adjusted for the rotating case. With this data, force and moment equations of motion are developed using...
Topics: Helicopters, Aerodynamics, Rotors (Helicopters), Flutter (Aerodynamics)