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Some problems in the filtering and the detection of diffusion processes that are solutions of stochastic differential equations are studied. Transition densities for Markov process solutions of a large class of stochastic differential equations are shown to exist and to satisfy Kolmogorov's equations. These results extend previously known results by allowing the drift coefficient to be unbounded. With these results for transition densities the nonlinear filtering problem is discussed and the...
Topics: DTIC Archive, Duncan, T E, STANFORD UNIV CA STANFORD ELECTRONICS LABS, *DETECTION, *DIFFERENTIAL...
Defense Technical Information Archive
by Defense Technical Information Center
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Military capital is an aggregate measure of all durable assets of the defense establishment. The report investigates two related measures of military capital: the instantaneous-productive capacity of military capital, which equals the total monetary value of the benefits provided by the assets at some point in time, and the long-run productive capacity of military capital, which equals the monetary value of the benefits by the assets over the remainder of their service lives. These two measures...
Topics: DTIC Archive, Hildebrandt,Gregory G, RAND CORP SANTA MONICA CA, *ECONOMIC ANALYSIS, *DEFENSE...
Defense Technical Information Archive
by Defense Technical Information Center
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This paper considers the problem of optimal recovery of an element u of a Hilbert space H from measurements of the form lj(u), j = 1, . . . ,m, where the lj are known linear functionals on H. Problems of this type are well studied [18] and usually are carried out under an assumption that u belongs to a prescribed model class, typically a known compact subset of H. Motivated by reduced modeling for solving parametric partial differential equations, this paper considers another setting where the...
Topics: DTIC Archive, Binev,Peter, Texas A and M University College Station United States, Hilbert space,...
Defense Technical Information Archive
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The tactic of leadership decapitation, using military action to capture or kill terrorist leadership, is a key component of United States counterterrorism strategy. Policymakers argue that eliminating terrorist leadership is an effective way to disrupt, and, ultimately, destroy terrorist organizations. Since 2001,hundreds of terrorist leaders have been captured or killed by U.S. counterterrorism operations. In spite of this, the spread of violent, radical jihadist groups like Al-Shabaab has...
Topics: DTIC Archive, Butler,Brett M, Naval Postgraduate School Monterey United States, counterterrorism,...
Defense Technical Information Archive
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This Letter reports on a method of maximizing the power output from highly saturated cladding-pumped continuous-wave single-frequency fiber amplifiers simultaneously, taking into account the stimulated Brillouin scattering and transverse modal instability thresholds. This results in a design figure of merit depending on the fundamental mode overlap with the doping profile, the peak Brillouin gain coefficient, and the peak mode coupling gain coefficient. This figure of merit is then numerically...
Topics: DTIC Archive, Ward,Benjamin G, United States Air Force Academy Air Force Academy United States,...
Defense Technical Information Archive
by Defense Technical Information Center
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Topics: DTIC Archive, BATTELLE MEMORIAL INST COLUMBUS OH REMOTE AREA CONFLICT INFORMATION CENTER, *ARMY...
Defense Technical Information Archive
by Defense Technical Information Center
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In the OSD Study of Program Manager Training and Experience, program managers gave high marks to their acquisition training concerning Contracting Challenges. But, personal one-on-one interviews with Program Executive Officers and Program Managers caveated that by indicating that they were concerned about how to communicate, and get along with, their contracting officers (KOs). No surprise there. How do we go about achieving that?
Topics: DTIC Archive, Krieger,John, Defense Systems Management College Fort Belvoir United States,...
DNA vaccine technology holds great promise as a platform for developing vaccines against both emerging and established global pathogens. Despite this potential, significant challenges impede the capacity of DNA vaccines to prevent disease in humans. Foremost amongst these, is the gap between remarkable results obtained in pre-clinical mouse models and relatively modest immunogenicity observed in humans. The present work is testing the hypothesis that skeletal muscle myocytes sense cytosolic DNA...
Topics: DTIC Archive, Zaharatos,Gerasimos J, Sir Mortimer B. Davis Jewish General Hospital Montreal H3T 1E2...
An investigation of the predictive capability of a new Air Force Weapons Laboratory model for transistor and diode failure under reverse bias was initiated. A comparison with the junction capacitance damage model shows a doubled improvement at high confidence levels based on an Army-generated population of experimental damage data. (Author)
Topics: DTIC Archive, Vrabel,Michael J, HARRY DIAMOND LABS ADELPHI MD, *DIODES, *TRANSISTORS, DAMAGE,...
Defense Technical Information Archive
by Defense Technical Information Center
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This paper addresses nuclear hardness assurance as it relates to system acquisition, prerequisition, prerequisite efforts necessary for an affordable hardness assurance program, and the key aspects of the management of the program. (Author)
Topics: DTIC Archive, Patrick, Rayford P, SOCIETY OF AUTOMOTIVE ENGINEERS INC WARRENDALE PA, *AIRCRAFT,...
The Space Shuttle Program (STS) at Vandenberg Air Force Base is expected to generate a variety of hazardous wastes during its years of operation, from 1985 through 1994. The purpose of this study was to compile a projected inventory of the types and quantities of hazardous waste likely to be generated by shuttle-related ground operations. This inventory will be used to assess waste management options, to complete EPA hazardous waste forms, and for preparing the supplement to the environmental...
Topics: DTIC Archive, SCS ENGINEERS LONG BEACH CA, *AIR FORCE FACILITIES, *WASTE MANAGEMENT, *HAZARDOUS...
Defense Technical Information Archive
by Defense Technical Information Center
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This report documents results of a study to determine an appropriate hardware/software/communication environment for three specification tools: REVS, PERCAM, and AUTOIDEF. Host systems currently on the ARPANET and alternate high performance midicomputers were evaluated against functional requirements for the STE. The feasibility of converting REVS, now coded in Pascal, into ADA, JOVIAL J73, FORTRAN or COBOL was also assessed.
Topics: DTIC Archive, Baker, L, TRW DEFENSE AND SPACE SYSTEMS GROUP HUNTSVILLE AL, *COMPUTER...
A comparative analysis was made of the performance of the U.S. Navy EATS multibeam phased array telemetry antenna, currently under development by Pacific Missile Test Center and the planned APATS antenna intended for use by the U.S. Air Force ARIA Fleet. The comparison was made in the context of a ballistic missile terminal area test support role for the collection of telemetry data from MK-4 and MK-12 instrumented RVs during reentry. In this comparison, two levels of upgrade were examined for...
Topics: DTIC Archive, Cline,J F, SRI INTERNATIONAL MENLO PARK CA, *REENTRY VEHICLES, *AIRCRAFT ANTENNAS,...
Defense Technical Information Archive
by Defense Technical Information Center
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The goal of this task is to use the AFGL Magnetometer Network data base to improve the Air Force's ability to specify and predict geomagnetic activity. This information is very useful the studying of propagation of electro-magnetic waves and messages in the atmosphere. Initial efforts are aimed at generating an easily accessible data base for 1-2 years of data. Subsequent work will use the data in spectral and maximum entropy modelling. (Author)
Topics: DTIC Archive, Tsipouras,P, BEDFORD RESEARCH ASSOCIATES MA, *GEOMAGNETISM, *MAGNETOMETERS, DATA...
Defense Technical Information Archive
by Defense Technical Information Center
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An analysis has been performed to determine the feasibility and desirability of incorporating into NADIN the message traffic currently serviced by the Computer B (NAS-NAS) Network. The use of NADIN to support NAS-NAS communications was found to be feasible and cost-effective. The most attractive approach to such support was found to be the enhancement of the NADIN architecture, using packet-switching technology, to provide virtual circuit and alternate routing capabilities between all NADIN...
Topics: DTIC Archive, NETWORK ANALYSIS CORP VIENNA VA, *COMPUTER COMMUNICATIONS, *AIR TRAFFIC CONTROL...
Defense Technical Information Archive
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Contents: First Plenary Session; Speaker Biographies; Second plenary session; Summary of Recommendations; and List of Attendees.
Topics: DTIC Archive, FEDERAL AVIATION ADMINISTRATION TECHNICAL CENTER ATLANTIC CITY NJ, *AVIATION SAFETY,...
The Navy's dynamic design-analysis method (DDAM) is used to predict the peak forces and the deflections expected in items of equipment on combat ships subjected to underwater-explosion attacks. The DDAM cannot be applied directly to sound-isolated equipment because of the nonlinearity in the mounting. A method of linearizing the nonlinear elements of a structure by iterative analysis is described. The average elements are continuously adjusted during the iterative analysis until convergence...
Topics: DTIC Archive, Webbon,W W, NAVAL RESEARCH LAB WASHINGTON DC, *NONLINEAR ANALYSIS, *ACOUSTIC...
Defense Technical Information Archive
by Defense Technical Information Center
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The central purpose of the defense energy management program is to assure that the armed forces of the United States have sufficient energy resources to maintain the training, operational readiness, and the combat capability of the strategic and tactical forces. This includes a broad range of interrelated energy programs which include petroleum supply assurance, energy self-sufficiency, and energy conservation and efficiency. Two distinct sets of proposals emerged from the workshop: One set is...
Topics: DTIC Archive, OFFICE OF THE DEPUTY ASSISTANT SECRETARY OF DEFENSE (ENERGY ENVIRONMENT AND SAFETY)...
Defense Technical Information Archive
by Defense Technical Information Center
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Current methodology for determining components of a War Readiness Spares Kit (WRSK) is based on mean times to failure for the entire U.S. Air Force inventory. Failures on a specific aircraft type during a calendar period are divided by flying hours logged on that aircraft type during the same period. Kit configuration is then optimized using the Poisson distribution to approximate kit demand behavior. The Poisson process requires a single statistic, mean value of distribution, for which...
Topics: DTIC Archive, Metzner,H E, MISSOURI UNIV-ROLLA DEPT OF ENGINEERING MANAGEMENT, *MANAGEMENT PLANNING...
Based on available records, visual inspection, calculations, and past operational performance, Lake Paupackan Dam is judged to be in fair condition. Considering the size and hazard classification of the dam, the recommended Spillway Design Flood (SDF) varies between the 1/2 Probable Maximum Flood (PMF) and the PMF. The 1/2 PMF was, in this case, selected as the SDF. The spillway and reservoir, under existing conditions, will pass approximately 19 percent of the PMF before overtopping of the dam...
Topics: DTIC Archive, GANNETT FLEMING CORDDRY AND CARPENTER INC HARRISBURG PA, *EARTH DAMS, STABILITY,...
Sympathetic postganglionic neurons (SPNs) located in sympathetic ganglia represent the final common sympathetic motor output. Even though SCI produces a profound plasticity in sympathetic autonomic function, the extent that SCI-induced dysautonomia is based on SPN changes within the thoracic paravertebral sympathetic chain is unknown. Given their strategic site in autonomic signaling to body, any plasticity is likely to be of high significance, yet there is a paucity of studies undoubtedly due...
Topics: DTIC Archive, Hochman,Shawn, Emory University Atlanta United States, spinal injuries, spinal cord,...
Document Cloud
by Defense Technical Information Center
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Source: http://www.documentcloud.org/documents/6190733-FOIA-2019-147.html
Document Cloud
by Defense Technical Information Center
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Source: http://www.documentcloud.org/documents/5784918-ADA995289-pdf.html
Defense Technical Information Archive
by Defense Technical Information Center
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Topic: DTIC Archive
Defense Technical Information Archive
by Defense Technical Information Center
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The objective of the program was to obtain low cost fibers with tensile strengths greater than 400,000 psi and tensile moduli of 60,000,000 psi. A low cost process for converting concentrated aluminum salt solutions into uniform diameter polycrystalline oxide fibers via thermal decomposition has been developed. The process was used to prepare fibers ranging in composition from 73% alumina, 27% silica to 100% alumina. Fibers in which 0-10% boric oxide was added to the basic alumina-silica...
Topics: DTIC Archive, Fetterolf, Robert N, BABCOCK AND WILCOX CO ALLIANCE OH RESEARCH CENTER, *FIBERS,...
Defense Technical Information Archive
by Defense Technical Information Center
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The objective of this program was to formulate and develop an analytical model based on queueing theory for the purpose of evaluating various tactical voice net configurations and signaling alternatives. Results presented from the analytic queueing model are presented here in the context of specific Naval tactical net situations. The results illustrate only the use of the methodology developed; consequently, mathematical derivations have been omitted with the exception of a brief technical...
Topics: DTIC Archive, Janc, Robert V, IIT RESEARCH INST CHICAGO IL, *VOICE COMMUNICATIONS, MATHEMATICAL...
Defense Technical Information Archive
by Defense Technical Information Center
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Topics: DTIC Archive, Schwertz, Jerome H, CYCLOPS CORP BRIDGEVILLE PA UNIVERSAL-CYCLOPS SPECIALTY STEEL...
Defense Technical Information Archive
by Defense Technical Information Center
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The improvement of cathode performance in primary organic electrolyte batteries by conversion of the active material to an electronic semiconductor was investigated in this program. A series of n-type cadmium fluoride single crystals was prepared by a two-stage high-temperature doping process. Initial efforts to prepare n-type manganous fluoride by analogous procedures did not yield a conductive material. The cadmium fluoride crystals were characterized by the measurement of bulk and contact...
Topics: DTIC Archive, Nicholson, Margie M, ATOMICS INTERNATIONAL CANOGA PARK CA, *SEMICONDUCTORS, *PRIMARY...
Defense Technical Information Archive
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Recent robotics efforts have led to automating simple, repetitive manipulation tasks to speed up execution and lessen an operator's cognitive load, allowing them to focus on higher level objectives. However, the robot will eventually encounter something unexpected, and if this exceeds the tolerance of automated solutions there must be a way to fall back gracefully to teleoperation. To address this challenge, we present our human-guided autonomy solution in the context of the DARPA Robotics...
Topics: DTIC Archive, Gray,Steven, Lockheed Martin Advanced Technology Laboratories Cherry Hill United...
Defense Technical Information Archive
by Defense Technical Information Center
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Due to the reduced atmospheric pressure encountered at high altitudes, the current Army cook stove does not function well. This task was initiated to design and develop a collapsible pressure cooker for use by troops operating at high altitudes. The collapsible cooking pot is fabricated from a silicone rubber coated fiberglass material and has an aluminum bottom and lid. The lid incorporates a breech lock type closure, pressure regulator, folding handle and safety valve. Size, weight-capacity...
Topics: DTIC Archive, TRACOR JITCO INC ROCKVILLE MD, *COOKING DEVICES, RUBBER COATINGS, TEST METHODS,...
Defense Technical Information Archive
by Defense Technical Information Center
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The purpose of the SISTEM model is to create a proportional representation of real world populations and to simulate changes in the social identity of individuals resulting from actions taken by individuals and that leads to changes in affiliation and membership within different identity groups. Agents also engage in social actions that enhance groups to which they belong and degrade a targeted out-group. Identity groups that might be represented include both relatively fixed demographics (e.g....
Topics: DTIC Archive, Skarin,Bruce, Aptima, Inc Woburn United States, POPULATION, SIMULATION, MODELS
Defense Technical Information Archive
by Defense Technical Information Center
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Topic: DTIC Archive
NF1-assocaited MPNST accounts for 50% of all MPNSTs and is one of the most difficult subtypes of soft tissue sarcoma to manage, given its poor sensitivity to conventional systemic therapy and radiotherapy and high likelihood to metastasize. Novel therapeutic development is imperative. Using comprehensive and integrative genomic approaches, we have identified recurrent inactivating genetic alterations of three central pathways: PRC2 (80%) core components (EED or SUZ12), CDKN2A (81%) and NF1 (72%...
Topics: DTIC Archive, Chi,Ping, Sloan Kettering Institute for Cancer New York United States, Connective...
Defense Technical Information Archive
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Measurement methods based on gas-phase chemiluminescence have found extensive use in a wide variety of disciplines such as homogeneous and heterogeneous reaction kinetics, thermochemistry, gas dynamics, aeronomy, analytical chemistry and air pollution (source and ambient atmospheric monitoring). Chemiluminescence intensity measurements are used to determine reactant and/or product concentrations from which are derived rate coefficients, diffusion coefficients, densities, wall recombination...
Topics: DTIC Archive, Fontijn, Arthur, PURDUE UNIV LAFAYETTE IN PROJECT SQUID HEADQUARTERS, *CHEMICAL...
Topics: DTIC Archive, Lodge, A S, WISCONSIN UNIV-MADISON MATHEMATICS RESEARCH CENTER, *SOLUTIONS(MIXTURES),...
Defense Technical Information Archive
by Defense Technical Information Center
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The report contains a description of the technical problem areas and accomplishments achieved during the reporting period. In addition, a complete list of publications, presentations, lectures, etc. is included and the personnel associated with the program are listed. The research projects are in the general subject areas of fluid and plasma dynamics. (Author Modified Abstract)
Topics: DTIC Archive, Bloom, Martin H, POLYTECHNIC INST OF BROOKLYN NY, *FLUID MECHANICS,...
Defense Technical Information Archive
by Defense Technical Information Center
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f a high-hardness, high-carbon frontal plate metallurgically bonded to a softer lower carbon steel backup. Since the concept of DHS used for both structural and armor purposes is new, relatively little information is available to designers on the structural properties after ballistic impact. In the present paper, four different lots of (DHS) having target hardness levels of Rc 60 for the frontal portion and Rc 50 for the backup are considered. One lot was produced by standard ausforming...
Topics: DTIC Archive, Anctil, Albert A, ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MA, *ARMOR,...
Defense Technical Information Archive
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The goals of the present program are to study how the permeability of partially magnetized materials depends on material parameters and to catalogue the loss properties of a number of the important phase shifting materials. The results of the last half year are reported in two sections. The first section deals with the low power loss parameter of the demagnetized state as measured on a number of materials across a range of frequencies. The second section deals with the high-power performance of...
Topics: DTIC Archive, Green, Jerome J, RAYTHEON CO WALTHAM MA RESEARCH DIV, *MAGNETIC MATERIALS, *MICROWAVE...
Two years after the closing of the Army Physical Fitness Research Institute, an active duty Army physical therapist was once again assigned to serve the Army Sergeants Major Academy (SMA) students. Purpose: To evaluate the effects of an on-site physical therapist on injuries and physical fitness of Sergeants Major Course (SMC) students and assess risk factors for injury among the SMC students. Methods: Injury risk factors, physical fitness, and injury data were collected by survey from a SMC...
Topics: DTIC Archive, Chervak,Michelle, Army Public Health Center Aberdeen Proving Ground United States,...
Defense Technical Information Archive
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This research determined whether the provision of supplementary text would help resolve the problem of auditory overload during military command and control operations. Listeners, twenty-four English-fluent, normal-hearing, males and females, were presented one block of 78 triads of simultaneous messages over a communication headset, under each of twelve listening conditions. The messages were recordings made by two males (left and right ears, respectively) and a female. Listening conditions...
Topics: DTIC Archive, Abel,Sharon M, DEFENCE RESEARCH AND DEVELOPMENT TORONTO (CANADA) Toronto, Ontario,...
Defense Technical Information Archive
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Biosensors based on organic thin film transistor technology offer the exciting prospect of detecting and identifying peptides; biomarkers found in bodily fluids. This development would assist in the monitoring or identification of medical diseases and facilitate rapid, point-of-care testing. In particular, neuropeptide Y is a highly abundant neurotransmitter with links to many important physiological functions, including stress response. Its rapid detection provides an opportunity to identify...
Topics: DTIC Archive, Dastoor, Paul, UNIVERSITY OF NEWCASTLE RESEARCH SERVICES GRANTS OFFICE CALLAGHAN...
Defense Technical Information Archive
by Defense Technical Information Center
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This interim report presents the study results of a tent shaped phased array SHF aircraft antenna for Satellite Communications. The antenna consists of four planar phased arrays and has a low profile streamlined configuration. The tent array provides electrical scanning over a hemisphere and is capable of high power transmission. The design of the array is a trade-off of the key parameters including antenna coverage, gain, aerodynamic impact, high power transmission, and array packaging. The...
Topics: DTIC Archive, Chuang, C A, HARRIS CORP MELBOURNE FL, *AERODYNAMIC CONFIGURATIONS, *SATELLITE...
Defense Technical Information Archive
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This report covers Allegheny Creek from its confluence with the Schuylkill River at Robeson Township to the study limit at Kurtz Mill Road, Brecknock Township, a distance of 10.3 miles. The stream is characterized by low banks with the overbanks varying from gently rolling hills to side slopes that are extremely steep. The areas adjacent to Allegheny Creek are predominantly rural. The flood plains are generally used for agricultural purposes although there is some residential development...
Topics: DTIC Archive, ARMY ENGINEER DISTRICT PHILADELPHIA PA, *FLOODING, HAZARDS, FORECASTING, HYDROLOGY,...
Defense Technical Information Archive
by Defense Technical Information Center
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This report describes features of a language for distributed and parallel programming which has been designed to provide flexibility in the transfer of information and control between the individual components of a program. The language allows synchronous and asynchronous message-passing, multiple-source input and broadcast output, and enables particular features of a distributed architecture to be efficiently accommodated without modification to the language. The module serves as the unit of...
Topics: DTIC Archive, Joseph, Mathai, CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF COMPUTER SCIENCE,...
Defense Technical Information Archive
by Defense Technical Information Center
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This report addresses the appropriateness of simulation languages as auxiliary tools to help the USACSC attain its objectives. The basic concepts of simulation are overviewed; discrete event languages are shown to be consonant with USACSC modeling requirements. The three major discrete event languages in use today (GPSS, SIMSCRIPT, and GASP) are overviewed. Selection criteria are derived and employed to assess the use of these general simulation languages in the USACSC environment. The...
Topics: DTIC Archive, Rose,Lawrence L, BATTELLE COLUMBUS LABS OH, *COMPUTERIZED SIMULATION, *HIGH LEVEL...
Defense Technical Information Archive
by Defense Technical Information Center
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The increasing decentralization of computing resources and the proliferation of personal and small business computers create new problems in computer security. One such problem is the protection of externally supplied software, i.e., software supplied by other than the users/owners of these small computers. In the case of personal and small business computers, proprietary software serves as the primary example. In distributed systems comprised of autonomously managed nodes, members of the user...
Topics: DTIC Archive, Kent,Stephen Thomas, MASSACHUSETTS INST OF TECH CAMBRIDGE LAB FOR COMPUTER SCIENCE,...
Defense Technical Information Archive
by Defense Technical Information Center
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An analytical study was made of the feasibility of using an MHD- augmented arc as the primary component of a large reentry vehicle test facility. Computer studies of the performance of MHD accelerator channels were made for systems having channel input power of 50 MW to 1,700 MW. It was determined that complete simulation of reentry conditions is not possible in a single extended- flow facility. The studies showed, however, that very large increases in performance over existing arc facilities...
Topics: DTIC Archive, ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN, *HYPERSONIC WIND TUNNELS,...
Defense Technical Information Archive
by Defense Technical Information Center
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As part of the DNA containment program for underground nuclear testing, laboratory experiments were performed with small explosive charges cast in compressed grout spheres to assess the effects on containment of the residual stress field surrounding an exploded cavity. A comparison of constant flow-rate hydrofracture pressures in unvented exploded and unexploded cavities revealed the existence of a residual stress field that was beneficial to containment. Parameters were varied to provide an...
Topics: DTIC Archive, Cizek,J C, SRI INTERNATIONAL MENLO PARK CA, *ROCK MECHANICS, *NUCLEAR EXPLOSION...
Defense Technical Information Archive
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An experiment was conducted in the NASA Langley Continuous Flow Hypersonic Tunnel to measure the heat transfer and pressure distributions on finite span flaps subjected to turbulent boundary layer conditions. Data were obtained for three span widths at deflection angles below that required to induce separation at the compression corner. The results are compared with other experimental data and theoretical predictions. (Author)
Topics: DTIC Archive, Cassel,L A, SCIENCE APPLICATIONS INC IRVINE CA AERONAUTICAL SYSTEMS TECHNOLOGY DIV,...
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by Defense Technical Information Center
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This report covered areas of Chester County and Delaware County, Pa. subject to flooding by Crum Creek, Pa. It included a history of flooding along Crum Creek Pa. (to date of report and identified those areas which may be subject to future floods). Special emphasis was given to these possible future flood forecasts thru maps, photographs and profiles. Some aerial photography is provided along with hydrographs and maps.
Topics: DTIC Archive, ARMY ENGINEER DISTRICT PHILADELPHIA PA, *FLOODING, FORECASTING, HISTORY, STREAMS,...
The DoD policy with respect to synthetic fuels is threefold. The first is to qualify and test synthetic fuels to assure the Services that these fuels can be used in fleets of military engines. The second is to provide assistance to the DoE and other Government agencies to achieve early synfuel production capability to meet national security objectives. The third is to assure a common approach and consistency in implementing executive authority under Title I of the ESA and in bringing about a...
Topics: DTIC Archive, Bement, Arden L, OFFICE OF THE DEPUTY UNDER SECRETARY OF DEFENSE (RESEARCH AND...
Meteorological data gathered for the launching of the 19308A MLRS, Missile No. BC001, V02-003, and BC002, Round No. V152/MD-19, V153/MD-20, and V154/MD-21 presented in tabular form. (Author)
Topics: DTIC Archive, Keller,Donald C, ARMY ELECTRONICS RESEARCH AND DEVELOPMENT COMMAND WSMR NM...
Defense Technical Information Archive
by Defense Technical Information Center
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The pyrolysis of 1-iodopropane has been studied by the Variable Encounter Method(VEM) at temperatures from 625 K to 840 K. Deactivating wall collisions are found to be stronger for this molecule than for the non-polar hydrocarbons previously studied in the same temperature range. Energy transfer collision efficiency declines with rise of wall temperature. The results of this study are compared with earlier steady-state work. (Author)
Topics: DTIC Archive, Wolters,F C, WASHINGTON UNIV SEATTLE DEPT OF CHEMISTRY, *HALOGENATED HYDROCARBONS,...
It is the author's judgement that the fight against terrorism will remain a continuing task and that governments, above all, must demonstrate that they and not the terrorists are in charge. (Author)
Topics: DTIC Archive, Jenkins,Brian Michael, RAND CORP SANTA MONICA CA, *TERRORISM, INTERNATIONAL,...
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Oxygen contamination is a potential problem in the study of amorphous metals because of the highly reactive nature of some of the constituent elements of metallic glasses and because of the processing techniques which are used to produce this metastable state. Oxygen is frequently present already in the starting materials, e.g., rare earth elements or early transition metals; further, oxygen present as an impurity in the gaseous atmosphere may be incorporated during alloy preparation (e.g., arc...
Topics: DTIC Archive, Polk,D E, NORTHEASTERN UNIV BOSTON MA INST OF CHEMICAL ANALYSIS APPLICATIONS AND...
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This document reports the development of an incremental digitally-controlled electrohydraulic actuation system (DEHA). An electronic digital controller and a prototype DEHA unit, with an electric-stepper-motor-driven rotary distributor valve, two hydraulic drive motors, and a torque-summing gearbox, were assembled. Significant reductions in the hydraulic power normally required with a conventional geared hydraulic motor system, and some degree of hydraulic power recovery were obtained. (Author)
Topics: DTIC Archive, Raymond,Eugene T, BOEING MILITARY AIRPLANE CO SEATTLE WA, *DIGITAL COMPUTERS,...
Defense Technical Information Archive
by Defense Technical Information Center
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Topic: DTIC Archive
Based on investigations of the downstream flood plain made in connection with this report, it is recommended that the hazard potential classification be downgraded from high to significant hazard. Hydraulic and hydrologic analyses indicate that the spillway is inadequate. Discharge from the spillway is not sufficient to pass the designated spillway design floor (100-year storm) without an overtopping of the dam. The spillway is capable of passing approximately 56 percent of the SDF. Therefore,...
Topics: DTIC Archive, McDermott,Richard J, NEW JERSEY DEPT OF ENVIRONMENTAL PROTECTION TRENTON, *EARTH...
Defense Technical Information Archive
by Defense Technical Information Center
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The Pre-production Model Cartographic Electron Beam Recorder (EBR) System installed at the Hydrographic/Topographic Center in Washington, D.C. is a high speed, high resolution, recording system capable of plotting both lineal and raster data developed for the Defense Mapping Agency (DMA) to produce color separation film masters for maps, charts and high resolution satellite and aerial imagery from digital cartographic and image data on magnetic tape. The color separations are used to prepare...
Topics: DTIC Archive, Grosso,Patrick F, IMAGE GRAPHICS INC FAIRFIELD CT, *RECORDING SYSTEMS, *VIDEO...
It is the intent of this approach to determine in detail the littoral process pattern during any individual storm and to outline the consequent long-term sediment dispersal paths. Based on the developed process response model for the unmodified Cattaraugus Embayment, the report concludes with a prediction of possible sedimentation problems associated with five different breakwater configurations at the Creek mouth. (Author)
Topics: DTIC Archive, Fahnestock,Robert F, STATE UNIVERSITY OF NEW YORK COLL AT FREDONIA DEPT OF GEOLOGY,...
This essay examines the formulation of English policy toward France from September 1754 to July 1755. During this period Anglo-French relations went through a transformation from the watchful peace established at Aix-la-Chapelle to a state of undeclared war. By using as a framework the negotiations between London and Versailles aimed at resolving the boundary disputes in North America, this study details in chronological order the progress of English diplomacy toward both the continent and the...
Topics: DTIC Archive, McLean,James R, ARMY MILITARY PERSONNEL CENTER ALEXANDRIA VA, *FOREIGN POLICY,...
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Weiss and Worsham's predictions for atomization in high-velocity airstreams appear valid even when extended to higher viscosity fluids than originally derived. Newtonian, and viscoelastic fluids show different breakup mechanisms in high-velocity airstreams, as shown by injection photos, mass median diameters and drop-size distributions. Although not because of increase in viscosity alone, addition of polymer increases resultant particle size from liquids. For a given polymer, mass median...
Topics: DTIC Archive, Matta,Joseph E, ARMY ARMAMENT RESEARCH AND DEVELOPMENT COMMAND ABERDEEN PROVING...
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The report details the results of the first phase of a large scale research study investigating discipline and the effects of discipline in a large Southeastern Oil Refinery. The fifty seven interviews were conducted with hourly maintenance and operating employees. Based on these employees' descriptions of the discipline process and how it works, a preliminary model was developed. Variables associated with the employee, the disciplinary agent, the situation, and the refinery complex as a system...
Topics: DTIC Archive, Arvey,Richard D, HOUSTON UNIV TEX DEPT OF PSYCHOLOGY, *ORGANIZATIONS, *PERSONNEL...
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The steady-state combustion model developed in FY 1979 was further improved by the incorporation of models of aluminum agglomeration and energetic binder combustion. Application of the model to a large variety of composite propellants was successful for the most part. Remaining deficiencies in the model are discussed. Experiments with a porous burner apparatus designed to simulate the diffusion flames of bimodal propellants revealed that fine oxidizer ports tend to operate more fuel-rich than...
Topics: DTIC Archive, Cohen,N S, JET PROPULSION LAB PASADENA CA, *MATHEMATICAL MODELS, *COMBUSTION,...
This report is a six-part statistical summary of surface weather observations for Johnston Island, Pacific Island. It contains the following parts: (A) Weather Conditions; Atmospheric Phenomena; (B) Precipitation, Snowfall and Snow Depth (daily amounts, and extreme values); (C) Surface winds; (D) Ceiling versus Visibility, Sky Cover; (E) Psychrometric Summaries (daily maximum and minimum temperatures, extreme maximum and minimum temperatures, psychrometric summary of wet-bulb temperature...
Topics: DTIC Archive, *PACIFIC OCEAN, FREQUENCY, TEMPERATURE, WEATHER, DISTRIBUTION, WIND, DEPTH, SURFACES,...
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This report provides a method of evaluating the endurance of tracked and wheeled vehicles. It prescribes mileage or hours of operation over standard test courses, including land and water, for the various types of vehicles, interspersed with vehicle mission tests. It also covers loads, towed loads, speeds, maintenance, and inspections and use of the tachograph for recording speed, mileage, and operating time, and applies to all types of vehicles except materials handling equipment.
Topics: DTIC Archive, ARMY TEST AND EVALUATION COMMAND ABERDEEN PROVING GROUND MD, *GROUND VEHICLES,...
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In this paper rank estimates, called WLS rank estimates and computed using iteratively reweighted least squares, are studied. They do not require the estimation of auxilliary scale or slope parameters nor do they require numerical search techniques to minimize a convex surface. The price is a small asymptotic efficiency loss. In the location model, beginning with a resistant starting value such as the median, the WLS rank estimates have good robustness and computational properties. The WLS rank...
Topics: DTIC Archive, Cheng,Kuo-Sheuon, PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF STATISTICS,...
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During the third quarter of FY81, efforts in the various tasks of STRIP have resulted in progress toward the program goals as summarized below: The voltage at which corona forms about electrodes and hook-up wires in a transducer configuration has been quantified in the laboratory and verified in an actual transducer design. An investigation of the effects of using unshielded electrical cable exterior to the submarine hull on the performance and reliability of hydrophones has been initiated. The...
Topics: DTIC Archive, Timme,R W
This study appraises the technologies available to produce energy from biomass (wood). Direct combustion, gasification, and liquefaction methods are discussed as they relate to Army-scale (3 to 250 million MBtu/hr .88 to 73 MW) central heating plants. The study found: (1) There is little economic data for energy-from-wood technologies however, ranges of anticipated costs are given. (2) Combustion-based wood fuel technology is well established in this country. Of the five types reported,...
Topics: DTIC Archive, Collishaw,A, CONSTRUCTION ENGINEERING RESEARCH LAB (ARMY) CHAMPAIGN IL, *FUELS,...
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The present study was conducted as a part of the Army's effort to institutionalize a training innovation (i.e., self-paced instruction in a job performance approach) in a systematic way, making use of prior research findings related to course development, implementation and the process of change. The study was conducted within the context of two training courses, one for military Policemen and the other for Corrections Specialists, at Fort McClellan, Alabama.
Topics: DTIC Archive, Hungerland, Jacklyn Erlin, UNITED STATES INTERNATIONAL UNIV SAN DIEGO CA SCHOOL OF...
A working theory of two-component two-phase (gas-liquid) nozzles, developed as part of Phase I, was used to conduct parametric performance analyses over a wide range of flow conditions and for varied fluid properties. Droplet breakup and the interface transport of momentum and thermal energy were considered in the analyses, but mass transfer and wall friction losses were excluded. Results from the parametric analyses compare favorably with experimental data and other theoretical analyses...
Topics: DTIC Archive, Kuo,Simion C, UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CT, *NOZZLES, *TWO...
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This report presents a study making our first approach to the analysis of Social Communities. The experiments conducted provide us with necessary knowledge to produce research within the problem of Social Copying Community Detection, where we will not only consider structural network information but also the contents of social interactions, with the aim to detect copying communities
Topics: DTIC Archive, Rosso,Paolo, Universitat Politcnica De Valncia Valncia Spain, artificial neural...
Defense Technical Information Archive
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Plastic, synthetic ropes, natural fiber ropes, electrical cable insulations, and a wood panel were partially exposed in the black, bottom sediment of Port Heuneme Harbor to determine the effect of hydrogen sulfide on materials. After one year of exposure, the materials were recovered and examined for fouling and biodeterioration. In addition, hardness and moisture absorption tests were conducted on the plastic panels while tensile strength tests were conducted on rope specimens. Significant...
Topics: DTIC Archive, Muraoka, James S, NAVAL CIVIL ENGINEERING LAB PORT HUENEME CA, *MATERIALS, *SEA...
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Topics: DTIC Archive, Albertine, J R, JOHNS HOPKINS UNIV LAUREL MD APPLIED PHYSICS LAB, *AZIMUTH,...
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Topic: DTIC Archive