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Source: http://www.documentcloud.org/documents/5784918-ADA995289-pdf.html
Document Cloud
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Source: http://www.documentcloud.org/documents/6190733-FOIA-2019-147.html
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...
Defense Technical Information Archive
by Defense Technical Information Center
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The analysis of debris captured in lubrication system filters provides a very high quality indicator of machinery health and can identify the early phases of dynamic component degradation before a failure occurs. RAAF PC9A aircraft have conducted enhanced routine filter debris analysis since 2009, however the traditional format of this program became unsupportable. This report describes the Filter Screening Tool (FST) that has been designed to rapidly screen the debris extracted from the PT6A...
Topics: DTIC Archive, Becker,Andrew, Defence Science and Technology Group Fishermans Bend Victoria...
Defense Technical Information Archive
by Defense Technical Information Center
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This report documents the development of second generation Fully Homomorphic Encryption (FHE) schemes providing simple and efficient FHE operations based on standard cryptographic hardness assumptions. These solutions form the current state-of-the-art in fully homomorphic encryption. This was further developed into attribute based encryption schemes, reusable garbled circuits, functional encryption schemes and secure multi-party computations solutions.
Topics: DTIC Archive, Goldwasser,Shafi, Massachusetts Institute of Technology Cambridge United States,...
The state of Missouri never seceded from the United States, yet the state witnessed more violence and bloodshed than almost any other state in the Union. The violence in Missouri looked little like the larger war. It devolved from conventional operations for territorial control to criminality motivated by personal grievances. The conflict deteriorated quickly; in sixteen short months the war in Missouri was completely disconnected from the larger Confederate movement, leaving United States...
Topics: DTIC Archive, Holstead, David T, US Army School for Advanced Military STudies Fort Leavenworth...
Trust management for mobile ad hoc networks (MANETs) has emerged as an active research area as evidenced by the proliferation of trust/reputation protocols to support mobile group based applications in recent years. In this paper we address the performance issue of trust management protocol design for MANETs in two important areas: trust bias minimization and application performance maximization. By means of a novel model based approach to model the ground truth status of mobile nodes in MANETs...
Topics: DTIC Archive, Chen,Ing-Ray, U.S. Army Research Laboratory Adelphi United States, reprints, mobile...
Defense Technical Information Archive
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Convective rains in the Intertropical Convergence Zone produce lenses of freshened water on the ocean surface. Due to significant density differences between the freshened and saltier seawater, strong pressure gradients develop, resulting in lateral spreading of freshwater lenses in the form of gravity currents. Gravity currents inherently involve three-dimensional dynamics. As a type of organized structure, gravity currents may also interact with, and be shaped by, the ambient oceanic and...
Topics: DTIC Archive, Soloviev,Alexander V, Naval Research Laboratory Stennis Space Center United States,...
The assimilation of surface velocity observations and their impact on the model sea surface height (SSH) is examined using an operational regional ocean model and its four-dimensional variational data assimilation (4DVAR) analysis component. In this work, drifter-derived surface velocity observations are assimilated into the Navy's Coastal Ocean Model (NCOM) 4DVAR in weak-constraint mode for a Gulf of Mexico (GoM) experiment during August -September 2012. During this period the model is trained...
Topics: DTIC Archive, Carrier,Matthew, Naval Research Laboratory Stennis Space Center United States, OCEAN...
The Navy has been procuring Virginia (SSN-774) class nuclear-powered attack submarines since FY1998. The two Virginia-class boats requested for procurement in FY2017 are to be the 25th and 26th boats in the class. The 10 Virginia-class boats programmed for procurement in FY2014-FY2018 (two per year for five years) are being procured under a multiyear-procurement (MYP) contract.The Navy estimates the combined procurement cost of the two Virginia-class boats requested for procurement in FY2017 at...
Topics: DTIC Archive, O'Rourke,Ronald, Congressional Research Service Washington United States, naval...
Our objective was to determine whether DoD developed controls to effectively manage the shared costs of administrative support functions in Iraq. This audit relatesto Operation Inherent Resolve, an overseas contingency operation, and was completed in accordance with the OIGs responsibilities described in Section 8L of the Inspector General Act of 1978, as amended. U.S. Army Central (ARCENT) initially signed an interagency agreement with the Department of State to temporarily useand pay for...
Topics: DTIC Archive, Roark,Michael J, Department of Defense Inspector General Alexandria United States,...
Defense Technical Information Archive
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Iran ratified the nuclear Nonproliferation Treaty (NPT) in 1970. Article III of the treaty requires non-nuclear-weapon states-parties1 to accept comprehensive International Atomic Energy Agency (IAEA) safeguards; Tehran concluded a comprehensive safeguards agreement with the IAEA in 1974.2 In 2002, the agency began investigating allegations that Iran had conducted clandestine nuclear activities; the IAEA ultimately reported that some of these activities had violated Tehrans safeguards...
Topics: DTIC Archive, Kerr,Paul K, Congressional Research Service Washington United States, treaties,...
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by Defense Technical Information Center
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The magnitude of the victory by the Venezuelan opposition in the December 6, 2015, congressional elections surprised many in the country, and in the region, who had expected that the government of Nicolas Maduro would use its control over much of the media, most of the economy, the electoral authority and the repressive apparatus of the state to reduce the opposition margin of victory, if not engage in large scale electoral fraud to change the results entirely. The enormous opposition victory...
Topics: DTIC Archive, Ellis,R E, Army War College Strategic Studies Institute Carlisle United States,...
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CVN-78, CVN-79, CVN-80, and CVN-81 are the first four ships in the Navys new Gerald R. Ford (CVN-78) class of nuclear-powered aircraft carriers (CVNs). CVN-78 was fully funded in prior fiscal years. The Navys proposed FY2016 budget requests procurement for CVN-79 and advance procurement (AP) funding for CVN-80.CVN-78 was procured in FY2008. The Navys proposed FY2017 budget estimates the ships procurement cost at $12,887.0 million (i.e., about $12.9 billion) in then-year dollars. The ship...
Topics: DTIC Archive, O'Rourke,Ronald, Congressional Research Service Washington United States, AIRCRAFT...
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by Defense Technical Information Center
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The goal of this project was to study and optimize special classes of optical beams, with particular attention paid to beams with partial coherence or nested vortex structures, or combinations of the two. For intensity-based communication and remote sensing, partially coherent beams were studied with the goal of minimizing intensity fluctuations induced by random media. More recently, researchers have been interested in using the discrete topological phase core of optical vortex beams as an...
Topics: DTIC Archive, Gbur,Greg, University of North Carolina at Charlotte Charlotte United States, space...
We propose a series of icosahedral matryoshka clusters of A@B12@A20 (A = Sn, Pb; B = Mg, Zn, Cd), which possess large HOMO-LUMO gaps (1.29 to 1.54 eV) and low formation energies (0.06 to 0.21 eV/atom). A global minimum search using a genetic algorithm and density functional theory calculations confirms that such onion-like three-shell structures are the ground states for these A21B12 binary clusters. All of these icosahedral matryoshka clusters, including two previously found ones, i.e.,...
Topics: DTIC Archive, Huang,Xiaoming, University of Puerto Rico at Rio Piedras San Juan Puerto Rico,...
Defense Technical Information Archive
by Defense Technical Information Center
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Existing Navy databases do not always contain complete data about pregnancy and single parenthood in the Navy, nor do they contain information about attitudes towards birth control. Since 1988, a survey has been conducted almost biennially to obtain this data; this report presents results from the 2012-2013 administration of the survey. Overall, results are similar to previous administrations. In particular, there are currently about 14,000 single Navy fathers and 6,000 single Navy mothers;...
Topics: DTIC Archive, Uriell,Zannette A, Navy Personnel Research, Studies, and Technology Millington United...
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The photoelastic behavior of transparent materials under stress, which is represented by the material property of stress optical coefficient, can be used to evaluate glass samples of known and unknown composition. Using a polariscopic and load frame, we were able to create and observe the conditions of stress-induced birefringence. A modification of an ASTM testing procedure for determining stress optical coefficient is described. Stress optical coefficient data for several types of glasses are...
Topics: DTIC Archive, Weiss,Clayton M, US Army Research Laboratory Aberdeen Proving Ground United States,...
Defense Technical Information Archive
by Defense Technical Information Center
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The Army Learning Model (ALM) calls for a re-examination of instructor selection and training. Because the ALM is learner-centric, it specifies that instructors must now become facilitators in a more distributed classroom role. As facilitators, they must acquire skills at tailoring instruction to learners personal characteristics and at employing technology-enabled learning tools. Although the ALM outlines the end-state of the re-examination of instructors, it does not directly address the...
Topics: DTIC Archive, Keller-Glaze,Heidi, ICF International Fairfax United States, INSTRUCTORS, army...
Under the recently completed BRI program, the PI has established a new femtosecond solid dynamics laboratory (FSD) dedicated to the study of the fundamentals of femtosecond laser damage as a function of various parameters, laser wavelength, pulse width, pulse number, experimental ambience (air/vacuum/other), polarization and angle of incidence, target solid material conductivity(metal/semiconductor/insulator), band gap, and surface morphology (nano/micro-structured surface), and the PI's team...
Topics: DTIC Archive, Chowdhury,Enam, Ohio State University Columbus United States, laser pulses, laser...
This report represents the final documentation for the ONR FY12 Young Investigator Program (YIP) award, N00014-13-1-0402, titled Prompt Neutron Spectrometry for Identification of SNM in Unknown Shielding Configurations. The technical portion of this report is not comprehensive, although the executive summary makes a high level attempt. The YIP effort reported here complements work completed under the mainline ONR Maritime Weapons of Mass Destruction Detection (MWMDD) program (FY09-FY14). A...
Topics: DTIC Archive, Hoshor,Cory B, University of Missouri - Kansas City Kansas City United States,...
Defense Technical Information Archive
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Over the grant period, we developed a two-dimensional viscous steady- state flow solver for both laminar and turbulent flow. We developed a way to incorporate wall functions in non-body fitted grids by having each cut cell spawn a linelet from the wall through the cut cell centroid, into the Cartesian grid. We developed a fully conservative method for coupling the wall function to the flow on the Cartesian grid. We extended the wall function into a more general wall model that solves a two...
Topics: DTIC Archive, Berger,Marsha J, NEW YORK UNIV NY NEW YORK United States, boundary value problems,...
Defense Technical Information Archive
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This Test Operations Procedure (TOP) provides preparation, planning, conducting, and reporting procedures for testing sorbent-based air purification components (APCs) for the protection capability area of chemical defense. These procedures are designed to analyze the effectiveness of APCs for removing any chemical gas or vapor from incoming air. The intent of this process is to produce traceable, quantifiable, and defensible data that can be used to analyze an APCs ability to filter air in a...
Topics: DTIC Archive, U.S. Army Dugway Proving Ground Dugway United States, test and evaluation, chemical...
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by Defense Technical Information Center
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Majorana fermions (MFs) are quantum particles that are their own anti-particles, and satisfy non-Abelian exchange statistics. The latter is the key for their potential use in fault-tolerant topological quantum computation. In this project, we proposed to investigate the possibility of realizing MFs in much more physically robust s-wave superfluids by utilizing two additional components: spin-orbit coupling and Zeeman fields. In the last year grant period, we have made the following important...
Topics: DTIC Archive, Zhang,Chuanwei, University of Texas at Dallas Richardson United States, Fermions,...
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Introduction: Down Syndrome (DS) adults experience accumulation of Alzheimers disease (AD)like amyloid plaques and tangles and a high incidence of dementia and could provide an enriched population to study AD-targeted treatments. However, to evaluate effects of therapeutic intervention, it is necessary to dissociate the contributions of DS and AD from overall phenotype. Imaging biomarkers offer the potential to characterize and stratify patients who will worsen clinically but have yielded mixed...
Topics: DTIC Archive, Matthews,Dawn C, ADM Diagnostics Northbrook United States, brain, biological markers,...
Objective: Patients requiring resective brain surgery often undergo functional brain mapping during perioperative planning to localize expressive language areas. Currently, all established protocols to perform such mapping require substantial time and patient participation during verb generation or similar tasks. These issues can make language mapping impractical in certain clinical circumstances (e.g., during awake craniotomies) or with certain populations (e.g., pediatric patients). Thus, it...
Topics: DTIC Archive, de Pesters,Adriana, National Center for Adaptive Neurotechnologies,Wadsworth Center,...
Alumina (aluminum oxide, Al2O3) has many favorable properties but is challenging to make transparent because of its anisotropic crystal structure. To combat the anisotropy, magnetic alignment of the particles can be used to minimize the change in index of refraction from grain to grain, thus reducing light scattering and allowing for transparency. Density functional theory results indicated that adding a rare-earth (RE) dopant enhanced the magnetic anisotropy of the alumina crystals, making...
Topics: DTIC Archive, Moorehead,Carli A, ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD ABERDEEN PROVING...
Our research objective was to develop new ways and means for identifying, tracking, and analyzing the costs and other better buying opportunities associated with the acquisition life cycle of OA software systems for Web-based or mobile devices.
Topics: DTIC Archive, Scacchi,Walt, University of California, Irvine Irvine United States, mobile devices,...
Defense Technical Information Archive
by Defense Technical Information Center
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After nearly a decade and a half of combating Al Qaeda (AQ) in Afghanistan and Pakistan, the United States faces an increasingly diverse threat from Al Qaeda affiliates in the Middle East and Africa. While senior Al Qaeda figures reportedly remain based in Pakistan, the network maintains a number of affiliates across the Middle East and Africa including Al Qaeda in the Arabian Peninsula (AQAP), Al Qaeda in the Islamic Maghreb (AQIM), and Al Shabaab. Al Qaeda also retains a small but growing...
Topics: DTIC Archive, Humud,Carla E, Congressional Research Service Washington United States,...
The acquisition and installation of the nanosecond flash photolysis spectrometer have been completed. The instrument is used to enhance both research and teaching at Spelman College. This acquisition includes: (1) LP980 laser flash photolysis instrument (EdinburghInstruments), (2) Nd:YAG laser, (3) cuvette holder (-40 110 degrees C), and (4) laser table. The laser system generates 532, 355, and 266 nm wavelengths. The current setup also includes: (1) an iCCD (intensified charge-coupled device)...
Topics: DTIC Archive, Jeilani,Yassin A, SPELMAN COLL ATLANTA GA ATLANTA United States, physical chemistry,...
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by Defense Technical Information Center
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The purpose of this essay is to advance collective wisdom about a productive career in the Humanities with a special focus on the field traditionally called languages, literatures, and linguistics. Between the two of us, we estimate that se have taught more than 7,500 students over 74 years, helped repopulate our chosen profession with 150 language teachers and professors, wrote 70 published papers and book chapters, delivered at lest 335 presentations, co-authored nine books and been honored...
Topics: DTIC Archive, Long,Sheri S, United States Air Force Academy Air Force Academy United States,...
Ebola Virus Disease is a serious illness of humans and nonhuman primates (NHPs) caused by the Ebola Virus (EBOV). Historically, transmission of EBOV has occurred primarily among close contacts and family members providing medical care for affected individuals. While direct contact has been shown to be the primary source of EBOV transmission, there is limited evidence of aerosol transmission among humans. Due to the inconsistent evidence of EBOV aerosol transmission, we utilized a high volume...
Topics: DTIC Archive, Harbourt, David E, USAMRIID Frederick United States, ebola virus, ribonucleic acids,...
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by Defense Technical Information Center
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In massively unsteady wing-flows, organized flow-separation may increase lift well above steady-state. We explore imposed rotations and rectilinear translations of rigid flat plates in incompressible flow, comparing a linear-ramp angle of attack change with streamwise acceleration (surge). In rotation, the plate revolves about an axis inboard of its inboard tip, notionally representative of a flapping-wing. Experiment, computation and analysis culminated in a two-dimensional lumped vortex model...
Topics: DTIC Archive, NATO SCIENCE AND TECHNOLOGY ORGANIZATION NEUILLY-SUR-SEINE (FRANCE) NEUILLY-SUR-SEINE...
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by Defense Technical Information Center
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Supplier selection plays a key role in the context of supply chain management. As recent emphasis has been placed on supply chain resilience, so too should such emphasis be placed on resilient suppliers. In particular, this work evaluates how different suppliers enable the supply chain to withstand the impacts of a disruption and return performance to a desired level in a timely manner. The primary measure of supply chain performance is taken to be availability, or the extent to which the...
Topics: DTIC Archive, Barker,Kash, University of Oklahoma Norman United States, Supply chain management,...
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by Defense Technical Information Center
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Time needed to develop and field new military capabilities is becoming an increasingly serious problem. Among other things, development times have steadily increased. In this paper, we attempt to structure the schedule estimating problem, present some initial results, and propose a research agenda to improve schedule estimating. Accordingly, we seek preliminary answers to the following questions. What is the current state of the art for estimating acquisition program schedules?What should it...
Topics: DTIC Archive, Franck,Raymond, U.S. Air Force Academy USAFA United States
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Two features have been consistent in the Middle East and North Africa since the era of independence: ongoing violence of all sortsand the absence of a collective security structure, which could tackle this violence. Since the end of World War II, the region has seen multiple attempts to organize collective and cooperative security, all of which failed. Since the so-called Arab Spring, movement has come again into regional security. From joint exercises and combat operations to an attempt to...
Topics: DTIC Archive, Gaub,Florence, U.S. Army War College -Strategic Studies Institute Carlisle United...
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Corruption in Conflict: Lessons from the U.S. Experience in Afghanistan is the first in a series of lessons learned reports planned to be issued by the Special Inspector General for Afghanistan Reconstruction (SIGAR). The report examine show the U.S. governmentprimarily the Departments of Defense, State, Treasury, and Justice, and the U.S. Agency for International Developmentunderstood the risks of corruption in Afghanistan, how the U.S. response to corruption evolved,and the effectiveness of...
Topics: DTIC Archive, Sopko,John F, Special Inspector General for Afghanistan Reconstruction (SIGAR)...
U.S. Army doctrine requires that commanders understand, visualize, and describe the infrastructure component of the Joint Operating Environment to accomplish the Armys missions of protecting, restoring, and developing infrastructure. The functionality of modern cities relies heavily on interdependent infrastructure systems such as those for water, power, and transportation. Disruptions often propagate within and across physical infrastructure networks and result in catastrophic consequences....
Topics: DTIC Archive, Wang,Yi, U.S. Army Engineer Research and Development Center Construction Engineering...
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Army missions take place in dynamic environments, where changing illumination, precipitation, and vegetation can modify saliency and context of an outdoor scene, obscure features, and degrade object recognition. For Army missions, scene understanding tools need to account for dynamic environments that change as a function of space and time and should be tested in mission simulating conditions. In addition, the impact of dynamic environments should be included in the scene understanding...
Topics: DTIC Archive, Tunick, Arnold, US Army Research Laboratory Adelphi United States, computer vision,...
This proposal focuses on the analysis and design of coordination algorithms for multiple agents deployed in adversarial environments. The multi-agent systems can represent miscellaneous autonomous and semi-autonomous vehicles that are remotely controlled by operators. These groups can be subject to attacks from other external agents leading to complex networked adversarial settings. The proposal presents work in two main areas: 1) the use of a class of receding-horizon type of algorithms to...
Topics: DTIC Archive, Martinez,Sonia, CALIFORNIA UNIV SAN DIEGO LA JOLLA LA JOLLA United States,...
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by Defense Technical Information Center
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The Munitions Supply Program (MSP) is a long-term procurement program that sustains a domestic munitions industrial base that consists of a group of government-franchised monopolies contracted by Public Works and Government Services Canada (PWGSC) on behalf of the Department of National Defence. This report first provides an overview of the evolution of the program from its beginnings in the late 1970s to where it stands today. Further, in order to establish a perspective on modern MSP policy,...
Topics: DTIC Archive, Berkok,Ugurhan, QUEENS UNIV KINGSTON (CANADA) KINGSTON Canada, Munitions industry,...
Chinas meteoric rise has captured the attention of the United States. Adding to the complexity is China has successfully made inroads in Latin America. This reality has strategists and policy-makers at odds with one-another with respect to formulating a policy for addressing the growth of Chinese influence in Latin America. The concern is whether the rise of China and its increasing presence in Latin America signals a challenge to the influence of the United States in the Western Hemisphere....
Topics: DTIC Archive, Barron,Benito J, Joint Advanced Warfighting School Norfolk United States,...
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Contemporary reactions to Russian aggression advance the notion that the U.S. and its western allies should internationally and economically isolate Russia while increasing the alliances hard power projection to contain and deter further aggression. This advancement is a polarizing pendulum swing in response to the perceived failure of the 2009 Reset of relations between U.S. and Russia. With an understanding of Russian strategic culture and national interests in mind, this thesis offers that...
Topics: DTIC Archive, Nieman,Craig M, Joint Forces Staff College Norfolk United States, international...
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by Defense Technical Information Center
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Argentina, a South American country with a population of almost 43 million, has had a vibrant democratic tradition since its military relinquished power in 1983. Current President Mauricio Macrithe leader of the center-right Republican Proposal (PRO) and the candidate of the Lets Change coalition representing center-right and center-left partieswon the 2015 presidential race and was inaugurated on December 10, 2015. He succeeded two-term President Cristina Fernndez de Kirchner, from the...
Topics: DTIC Archive, Sullivan,Mark P, Congressional Research Service Washington United States,...
Since the 1960s, the United States has deployed nuclear weapons on three types of strategic delivery vehicles collectively known as the strategic triad. The triad comprises the sea-based leg (submarine-launched ballistic missiles), ground-based leg (intercontinental ballistic missiles), and airborne leg (nuclear-capable heavy bombers). As a result of arms control agreements and strategic policies, the number of U.S. nuclear weapons and strategic delivery vehicles has been reduced substantially;...
Topics: DTIC Archive, Kirschbaum,Joseph W, U.S. Government Accountability Office Washington United States,...
Defense Technical Information Archive
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This report documents the results of experiments conducted by the joint efforts of the United States (U.S.) Army Aviation and Missile Research, Development, and Engineering Center (AMRDEC) and Armament Research, Development, and Engineering Center (ARDEC) in support of the Joint Insensitive Munitions Program (JIMTP) Tube-Launched, Optically Tracked, Wire-Guided (TOW) 2B Insensitive Munitions (IM) Warhead effort. The referenced experiments were conducted to determine the velocity reduction and...
Topics: DTIC Archive, Peterson,Nicholas R, AMRDEC Redstone Arsenal, high velocity, fragmentation,...
A series of organizational changes within the Office of the Secretary of Defense (OSD) since the Cold Wars end arguably fostered a devolution of focus on the nuclear enterprise. This culminated with inexcusable incidents that questioned the credibility of the United States nuclear enterprise. Through a content analysis of reports, directives, and historical documents with interviews of Department of Defense (DoD) personnel, this research found that the organizational changes drove a dissolution...
Topics: DTIC Archive, Ortiz,Marc Anthony C, AIR FORCE INSTITUTE OF TECHNOLOGY WPAFB United States,...
Defense Technical Information Archive
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On the surface, the majority of Air Force units appear to be executing some form of project risk management (PRM). Deeper investigation exposes many of the PRM practices currently in place to often be ad hoc, and as such, have the potential to poorly inform decisions when risk data is escalated to the enterprise levels of the Air Force. Resultantly, there is inconsistency between the PRM processes practiced by Air Force units. This inconsistency is an indication of risk mishandling at the...
Topics: DTIC Archive, Perez,Eric J, Air Force Institute of Technology WPAFB, project management, risk...
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by Defense Technical Information Center
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The top-down fabrication of an in-plane nanowire (NW) GaAs metal-oxide-semiconductor field-effect transistor (MOSFET) by focused-ion beam (FIB) etching and chemical oxidation is reported. The device has a semiconductor-on-insulator structure with an n -GaAs/Al2O3 layer stack implemented by lateral hydrolyzation oxidation. A 2 micron-long channel having an effective cross section 70 x 220 nm is directly fabricated into the n -GaAs layer by FIB etching. The channel is electronically isolated from...
Topics: DTIC Archive, Brueck,Steven R, Defense Threat Reduction Agency Fort Belvoir United States,...
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by Defense Technical Information Center
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Despite the destruction and chaos sown on the battlefield by the group that calls itself the Islamic State, one could argue that its propaganda efforts toward supporters, sympathizers, and enemies have also had disruptive results. Whether online or on the ground, the group has sought to use propaganda to magnify the effects of its battlefield successes, minimize the consequences of its failures, recruit new adherents, and increase awareness of its ultimate goals. Given the focus that the...
Topics: DTIC Archive, Milton,Daniel, U.S. Military Academy -Combating Terrorism Center West Point United...
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by Defense Technical Information Center
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This memorandum provides a brief introduction to finite rate chemistry in the framework of large eddy simulation for compressible flow fields. Particular emphasis is placed upon the filtered reaction rate expression through the use turbulent chemical closure terms. The Eddy Break-Up model is an example of this type of closure term. Within the multiphase physics computer code LESLIE3D, these algorithms are tested on a gas phase acetylene combustion problem and on a shock wave initiated droplet...
Topics: DTIC Archive, Nance,Douglas V, Air Force Research Laboratory Eglin AFB United States, flow fields,...
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Classical molecular dynamics simulations of the nonreactive collision between the N 2 cation and Ar atoms at two different temperatures show that inelastic rotational excitation of the ion in the product channel is important and occurs more frequently than previously assumed. The simulations use an RKHS PES based on UCCSD(T)/aug-cc-pVTZ electronic structure calculations and correct handling of the asymptotics within the RKHS framework. Analysis of the results for j' = 6 using a strict filtering...
Topics: DTIC Archive, Meuwly,Markus, Universitat Basel Basel Switzerland, molecular dynamics simulations,...
Is the United States Army Field Artillery capable of supporting combined arms maneuver operations in high intensity conflict? The Army Operating Concept recognizes that the skills required to do this represent the peak of military proficiency. However, after 15 years of supporting counterinsurgency operations and conducting non-standard missions the Field Artillery community appears to have lost this proficiency by letting some of their core competencies atrophy. This thesis seeks to describe...
Topics: DTIC Archive, Johnson,Ryan, US Army Command and General Staff College Fort Leavenworth United...
America's combatant command for the continent of Africa, US Africa Command (AFRICOM), does not have its headquarters located on the continent to administer command and control (C2) of US military forces. This Combatant Command (COCOM) is co-located in Germany with the US European Command (EUCOM) headquarters. It is a relatively new COCOM and the Department of Defense has considered moving the headquarters to the continent to help with rapid response to conflicts or emerging requirements in...
Topics: DTIC Archive, Johnson,Devanie N, US Army Command and General Staff College Fort Leavenworth United...
Defense Technical Information Archive
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Military practitioners must be creative and critical thinkers while confronting today's broad range of traditional and nontraditional national security issues. An analysis of the current climate change policy debate demonstrates the value of considering nontraditional problem sets in an effort to enhance creative and critical thinking. When approaching complex problems such as climate change and other national security threats, policy makers should consider all available tools. One such tool is...
Topics: DTIC Archive, Heifner, Derek B, US Army School for Advanced Military Studies Fort Leavenworth...
Operations by Sixth Army Group are not as familiar to Americans for a variety of reasons. For most Americans there tends to be more attentiveness with the literature on the landings in Normandy and subsequent operations. This monograph investigates operations conducted by the Sixth Army Group during the Second World War and its effective contribution to Eisenhower's broad front strategy as measured by how they integrated the French First Army into operations, arranging its logistic support, and...
Topics: DTIC Archive, Beard, Rebecca E, US Army School for Advanced Military Studies Fort Leavenworth...
Defense Technical Information Archive
by Defense Technical Information Center
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AMSARA has provided the Department of Defense with evidence-based evaluations of accession medical standards since 1996. As part of this ongoing research activity, data are collected from each services Disability Evaluation System (DES). AMSARAs mission was expanded in fiscal year (FY) 2009 to include audits and studies of existing DES by the request of the Office of Assistant Secretary of Defense, Health Affairs. The Disability Evaluation System Analysis and Research Annual Report includes...
Topics: DTIC Archive, Boivin,Michael R, WALTER REED ARMY INST OF RESEARCH SILVER SPRING MD SILVER SPRING...
Policymakers and defense acquisition experts have asserted that improved recruitment for the defense acquisition workforce is a necessary component for comprehensive acquisition reform. To help rebuild the workforce and enhance recruitment, DOD has used several hiring flexibilities authorized by Congress, the President, and OPM in recent years. Hiring flexibilities are a suite of tools that are intended to simplify, and sometimes accelerate, the hiring process.
Topics: DTIC Archive, Francis,Kathryn A, Congressional Research Service Washington United States, personnel...
Defense Technical Information Archive
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Since its inception in 1999, the Stryker Brigade Combat Team (Stryker BCT) structure has been under continuous revision. These changes have the potential to move the Stryker BCT away from its initial concept as defined in the Interim Brigade Organizational and Operational (O and O) Concept. When the O and O is compared to the Army Operating Concept, five gaps are identified: Double-V hull protection, which decreases strategic mobility, loss of the combined arms concept at company level, limited...
Topics: DTIC Archive, Burggrabe, Reed A, ARMY COMMAND AND GENERAL STAFF COLLEGE FORT LEAVENWORTH KS FORT...
Defense Technical Information Archive
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Cyber network analysts must gather evidence from multiple sources and ultimately decide whether or not suspicious activity represents a threat to network security. Information relevant to this task is usually presented in an uncoordinated fashion, meaning analysts must manually correlate data across multiple databases. The current experiment examined whether analyst performance efficiency would be improved by coordinated displays, i.e., displays that automatically link relevant information...
Topics: DTIC Archive, Vieane,Alex, Colorado State University Fort Collins United States, computer network...
Thirteen caves in the Toledo District, Belize, were bioinventoried in April 2011 and May 2012. Carios azteci (Matheson 1935) was found in five of the caves, representing the first record of C. azteci from Belize, but this species has probably been established in the country as long as the bat hosts were present. Five C. azteci specimens were screened for endosymbiotic and pathogenic microbes using PCR protocol. C. azteci was only found in the dark zone. The only endosymbiont or pathogen...
Topics: DTIC Archive, Taylor,Steven, USAFSAM/FHT Wright-Patterson AFB United States, ticks, Caves, Bats,...
Defense Technical Information Archive
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The ultimate goal of this project was to develop a model of a flight control strategy that is effective in simple as well as complex environments. Through a series of behavioural and anatomical investigations, we have made much progress in elucidating the flight control strategies and visual specialisations that allow insects, with their miniature brains and limited sensory systems to fly safely through cluttered natural environments. The most significant findings have been that the tropical...
Topics: DTIC Archive, Baird,Emily, Lunds Universitet Lund Sweden, xray computed tomography, collision...
Defense Technical Information Archive
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The Congress faces an array of policy choices as it confronts the challenges posed by the amount of federal debt held by the publicwhich has more than doubled relative to the size of the economy since 2007and the prospect of continued growth in that debt over the coming decades if the large annual budget deficits projected under current law come to pass (see Figure 1-1). To help inform lawmakers, the Congressional Budget Office periodically issues a compendium of policy options that would help...
Topics: DTIC Archive, Congressional Budget Office Washington United States, federal budgets, united states...
Defense Technical Information Archive
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Lysine deacetylases (KDACs) are enzymes that reverse the post-translational modification of lysine acetylation. Recently, a series of N-acetylthioureas were synthesized and reported to enhance the activity of KDAC8 with a fluorogenic substrate. To determine if the activation was general, we synthesized three of the most potent N-acetylthioureas and measured their effect with peptide substrates and the fluorogenic substrate under multiple reaction conditions and utilizing two enzyme purification...
Topics: DTIC Archive, Pingali,Subramanya, Xavier University of Louisiana New Orleans United States,...
An Organic Rankine Cycle generator (ORC) converts low-grade waste heat (250 C) into electric power using organic working fluids with lower boiling points than the common steam-based Rankine cycle. The demonstration objectives were to verify the performance, economics, and applicability of the ElectraTherm ORC in both controlled load and real world conditions at a DoD site.
Topics: DTIC Archive, Hansen,Timothy, Southern Research Institute Birmingham United States, electric...
Defense Technical Information Archive
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This report addresses a series of simulations of turbulent, multi-species flow fields surrounding a sphere. The purpose of these simulations is to validate our capability for using the Large Eddy Simulation with LInear Eddy Modeling in 3 Dimensions (LESLIE3D) multiphase physics computer program. A high Reynolds number flow field is computed at Mach 2.0, and a low Reynolds number flow field is calculated at Mach 0.1. The former flow field is strongly shocked while the latter flow field is shock...
Topics: DTIC Archive, Lopez-Fernandez,Pedro A, AIR FORCE RESEARCH LAB EGLIN AFB FL EGLIN AFB United States,...
Beta factors, a nondimensional form of stress intensity factor, are a key input used in generating crack-growth curves as part of Damage Tolerance Analysis work. One specific damage scenario that is of interest is the case of collinear asymmetrical cracks emanating from an offset circular hole in a finite-width rectangular plate, which is representative of circumstances that can occur in aircraft fleets. Unfortunately, no handbook results are available for this geometry. Using a custom-written...
Topics: DTIC Archive, Waldman,Witold, Defence Science and Technology Group Fishermans Bend Victoria...
Defense Technical Information Archive
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The goal of the Mississippi prostate cancer HBCU Undergraduate Research Training Program is to promote interest in careers in PCa research and care among undergraduate students from Tougaloo College (TC) and Jackson State University (JSU) at the University of Mississippi Medical Center (UMMC)-Cancer Institute (CI). During the summer of 2016, 2 undergraduate scholars from TC and JSU, gained experience in performing PCa research at UMMC-CI. This number added to trainees from classes of 2014 and...
Topics: DTIC Archive, Gomez,Christian, University Of Mississippi Medical Center Jackson United States,...
Defense Technical Information Archive
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The energy requirements of contingency bases (CBs) involved in U.S. military operations on every continent are met almost exclusively with the use of diesel generators, which are relatively inefficient both in terms of fuel consumption and the large amounts of waste energy generated during their operation. Tactical generators are currently loaded only to 30 to 40% capacity, due in large part to the sizing of generators to cover large electrical loads like electric heating of space and water....
Topics: DTIC Archive, Decker,Charles T, U.S. Army Engineer Research and Development Center (ERDC) Champaign...
Defense Technical Information Archive
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The Radiation and Scattering Compact Antenna Laboratory (RASCAL) is capable of measuring antennas and Radio Frequency (RF) subsystems up to 40 GHz with upgrades planned for 100 GHz. The brochure shows some of the capabilities of the RASCAL facility.
Topics: DTIC Archive, Pemberton,Thomas, AFRL Sensors Directorate Wright Patterson AFB United States,...
This dissertation searches the global commodities of military education and training assistance and international peacekeeping missions between the 1960s and 1980s for the meaning people on both the sending and receiving ends made of the international experience. For Ghanaian soldiers and their families and for American communities around large institutions for military education, training and service abroad paradoxically eroded national identities while creating new global citizens, within...
Topics: DTIC Archive, Clune,John V, University of Kansas Lawrence United States, culture (social sciences),...
Defense Technical Information Archive
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To determine the susceptibility of aged individuals to chemical warfare nerve agents (CWNAs), we evaluated the 24-hour median lethal dose (LD50) of soman (GD) in adult (2 months of age) and aged (18 months of age) male F344 rats, Aged rats proved more sensitive to GD-induced lethality with an LD50 of 50.0 mug/kg (95% CI; 63.8-78.00). To determine the etiology of theses differences, we measured whole blood and brain acetylcholinesterase (AChE) as well as plasma carboxylesterase (CaE) activity in...
Topics: DTIC Archive, Moffett,Mark C, U.S.Army Medical Research Institute of Chemical Defense Aberdeen...
Defense Technical Information Archive
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Topics: DTIC Archive, Vayalil,Praveen K, University of Alabama at Birmingham Birmingham United States,...
Defense Technical Information Archive
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We investigated the effective thermal boundary resistance (TBReff) of GaN-on-Diamond interfaces for diamond growth with a 5nm SiNx, a 5nm AlN interfacial layer, or without any interfacial layers, respectively. It was found that the SiNx interfacial layers resulted in smooth and sharp interfaces, but direct growth of diamond on GaN exhibited very rough interfaces. TBR(eff) is strongly correlated with interface quality. With an approximately 5nm SiNx interfacial layer, aTBR(eff) as low as 2.5...
Topics: DTIC Archive, Gu,Xing, Qorvo Inc. Richardson United States, thermal resistance, dielectrics,...
Defense Technical Information Archive
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From 1 January 2005 through 31 December 2014, a total of 8,819 incident diagnoses of non-melanoma skin cancer (NMSC) (incidence rate 64.6 cases per 100,000 person-years [p-yrs]) were documented in the health records of 6,670 active component service members. During the surveillance period, there was a very slight decrease in the annual crude incidence rates of NMSC; rates of NMSC peaked in 2007 (68.3 cases per 100,000 p-yrs) and were at their lowest in 2013 (60.4 cases per 100,000 p-yrs)....
Topics: DTIC Archive, Lee,Terrence, Armed Forces Health Surveillance Branch Silver Spring United States,...