Software Supportability Risk Assessment in OT&E (Operational Test and Evaluation): Literature Review, Current Research Review, and Data Base Assemblage.

DTIC Science & Technology

1984-09-28

variables before simula- tion of model - Search for reality checks a, - Express uncertainty as a probability density distribution. a. H2 a, H-22 TWIF... probability that the software con- tains errors. This prior is updated as test failure data are accumulated. Only a p of 1 (software known to contain...discusssed; both parametric and nonparametric versions are presented. It is shown by the author that the bootstrap underlies the jackknife method and

InAs-based Heterostructure Barrier Varactor Diodes with the In0.3Al0.7As0.4Sb0.6 as the Barrier Material

DTIC Science & Technology

2008-08-01

discussed. 2. Device growth and fabrication HBV diode samples were grown by solid-source molecular beam epitaxy (MBE). The layer structure consisted of...defined simultaneously using optical lithography, and Ti:Pt:Au (100:50:2500 Å) unannealed, Ohmic contacts were depos- ited by e- beam evaporation. The diode...behavior of a doped-channel high-electron mobility transistor ( HEMT ). Device physics simula- tions of the 200 Å HBV (using ATLAS from Silvaco

International Conference on Random Mappings, Partitions and Permutations Held in Los Angeles, California on 3-6 January 1992

DTIC Science & Technology

1992-08-01

cryptography to the simula- tion of epidemic processes and tests of the intrinsic randomness of quantum mechanics. Discussed in this paper are... theorem concerning the height of a random labelled rooted tree [4]; letting f( s ) = ½ + 82, G(t) = 1 - e-t if t > 0, G(t) = 0 otherwise, and A (0], p...o thi cOoection of infromaltion.% no|uaing• viggitIOns for riviucirg this curoon. to WasnaImllor "@as s n o w, i-i1it,"ersondO Daisr hqhvhwao. SWite

Operation Regime Analysis of Conduction Cooled Cavities through Multi-Physics Simulation

DOE Office of Scientific and Technical Information (OSTI.GOV)

Kostin, R.; Kanareykin, A.; Kephart, R. D.

Euclid Techlabs in collaboration with Fermilab IARC (Batavia, IL) is developing industrial superconducting 10MeV electron linac [1, 2]. Cryocoolers are to be used for cooling instead of liquid helium bath to simplify the linac infrastructure [3]. The cavity linked to commercially available cryo-cooler cold head [4, 5] through highly conductive aluminium (AL) strips. However, this solution raises a problem of contact thermal resistance. This paper shows some results of Comsol multyphysics simulations of the cavity cooling by AL strips. Some insight was obtained on the acceptable range of contact resistance. Operation regimes were obtained at different accelerating gradients and cavitymore » temperatures. The results of simula-tion are presented and discussed.« less

Static and quasi-static analysis of lobed-pumpkin balloon

NASA Astrophysics Data System (ADS)

Nakashino, Kyoichi; Sasaki, Makoto; Hashimoto, Satoshi; Saito, Yoshitaka; Izutsu, Naoki

The present study is motivated by the need to improve design methodology for super pressure balloon with 3D gore design concept, currently being developed at the Scientific Balloon Center of ISAS/JAXA. The distinctive feature of the 3-D gore design is that the balloon film has excess materials not only in the circumferential direction but also in the meridional direction; the meridional excess is gained by attaching the film boundaries to the corresponding tendons of a shorter length with a controlled shortening rate. The resulting balloon shape is a pumpkin-like shape with large bulges formed between adjacent tendons. The balloon film, when fully inflated, develops wrinkles in the circumferential direction over its entire region, so that the stresses in the film are limited to a small amount of uniaxial tension in the circumferential direction while the high meridional loads are carried by re-enforced tendons. Naturally, the amount of wrinkling in the film is dominated by the shortening rate between the film boundaries and the tendon curve. In the 3-D gore design, as a consequence, the shortening rate becomes a fundamental design parameter along with the geometric parameters of the gore. In view of this, we have carried out a series of numerical study of the lobed-pumpkin balloon with varying gore geometry as well as with varying shortening rate. The numerical simula-tions were carried out with a nonlinear finite element code incorporating the wrinkling effect. Numerical results show that there is a threshold value for the shortening rate beyond which the stresses in the balloon film increases disproportionately. We have also carried out quasi-static simulations of the inflation process of the lobed-pumpkin balloon, and have obtained asymmetric deformations when the balloon films are in uniaxial tension state.

Using New Remotely-sensed Biomass To Estimate Co2 Fluxes Over Siberia

NASA Astrophysics Data System (ADS)

Lafont, S.; Kergoat, L.; Dedieu, G.; Le Toan, T.

Two european programs recently focused on Siberia. The first one, Eurosiberian Car- bonflux was a faisability study for an observation system of the regional CO2 fluxes. The second one, SIBERIA was a big effort to develop and validate a biomass map on Siberia using radar data from satelltes (J-ERS, ERS). Here, we extend the simula- tion of NPP performed for the first program by using the biomass data of the second program. The TURC model, used here, is a global NPP model, based on light use efficiency, where photosynthetic assimilation is driven by satellite vegetation index, and au- totrophic respiration is driven by biomass. In this study, we will present a n´ zoom z on siberian region. The TURC model was run with a fine resolution (few kilometers) and a daily time step. We will discuss the impact of a new biomass dataset description on Net Primary Pro- ductivity (NPP) and CO2 fluxes estimation.

A Numerical Study of Automated Dynamic Relaxation for Nonlinear Static Tensioned Structures.

DTIC Science & Technology

1987-10-01

sytem f dscree fnit element equations, i.e., an algebraic system. The form of these equa- tions is the same for all nonlinear kinematic structures that...the first phase the solu- tion to the static, prestress configuration is sought. This phase is also referred to as form finding, shape finding, or the...does facilitate stability of the numerical solution. The system of equations, which is the focus of the solution methods presented, is formed by a

Design Method for Numerical Function Generators Based on Polynomial Approximation for FPGA Implementation

DTIC Science & Technology

2007-08-01

with a Design Specification de- scribed by Scilab [26], a MATLAB-like software applica- tion, and ends up with HDL code. The Design Specifica- tion...Conf. on Field Programmable Logic and Applications (FPL’05), Tampere, Finland, pp. 118–123, Aug. 2005. [26] Scilab 3.0, INRIA-ENPC, France, http

Coupling Visualization, Simulation, and Deep Learning for Ensemble Steering of Complex Energy Models: Preprint

DOE Office of Scientific and Technical Information (OSTI.GOV)

Potter, Kristin C; Brunhart-Lupo, Nicholas J; Bush, Brian W

We have developed a framework for the exploration, design, and planning of energy systems that combines interactive visualization with machine-learning based approximations of simulations through a general purpose dataflow API. Our system provides a visual inter- face allowing users to explore an ensemble of energy simulations representing a subset of the complex input parameter space, and spawn new simulations to 'fill in' input regions corresponding to new enegery system scenarios. Unfortunately, many energy simula- tions are far too slow to provide interactive responses. To support interactive feedback, we are developing reduced-form models via machine learning techniques, which provide statistically soundmore » esti- mates of the full simulations at a fraction of the computational cost and which are used as proxies for the full-form models. Fast com- putation and an agile dataflow enhance the engagement with energy simulations, and allow researchers to better allocate computational resources to capture informative relationships within the system and provide a low-cost method for validating and quality-checking large-scale modeling efforts.« less

Numerical Optimization of Synergetic Maneuvers

DTIC Science & Technology

1994-06-01

7 A. EQ U A TION S O F M O TION ..................................................................... 7 B. CO N TRO L LA ...0O V2 AR =g-- r which yields the control programs D T=- cosa L + Tsina a = free variable 3. Aerobang The first step in modeling the aerobang control...coefficients as follows: sina cosa 7CL 37 where a is the angle of attack, CA is the axial direction aerodynamic coefficient, and CN is the normal direction

Uncertainties in Engineering Design. Mathematical Theory and Numerical Experience.

DTIC Science & Technology

1985-08-01

Theoretical Mannual, Noetic Technologies Corpora- tion, St. Louis, Missouri, 1985. F :.5,. "V. .. " ,9.., 25 . - 5* 5 .° . . . . .. ,koA ’FIGURES...international center of study and research for foreign students in numerical mathematics who are supported by foreign govern- ments or exchange agencies

Programmable Numerical Function Generators: Architectures and Synthesis Method

DTIC Science & Technology

2005-08-01

generates HDL (Hardware Descrip- tion Language) code from the design specification described by Scilab [14], a MATLAB-like numerical calculation soft...cad.com/Error-NFG/. [14] Scilab 3.0, INRIA-ENPC, France, http://scilabsoft.inria.fr/ [15] M. J. Schulte and J. E. Stine, “Approximating elementary functions

Comparing Numerical Spall Simulations with a Nonlinear Spall Formation Model

NASA Astrophysics Data System (ADS)

Ong, L.; Melosh, H. J.

2012-12-01

Spallation accelerates lightly shocked ejecta fragments to speeds that can exceed the escape velocity of the parent body. We present high-resolution simulations of nonlinear shock interactions in the near surface. Initial results show the acceleration of near-surface material to velocities up to 1.8 times greater than the peak particle velocity in the detached shock, while experiencing little to no shock pressure. These simulations suggest a possible nonlinear spallation mechanism to produce the high-velocity, low show pressure meteorites from other planets. Here we pre-sent the numerical simulations that test the production of spall through nonlinear shock interactions in the near sur-face, and compare the results with a model proposed by Kamegai (1986 Lawrence Livermore National Laboratory Report). We simulate near-surface shock interactions using the SALES_2 hydrocode and the Murnaghan equation of state. We model the shock interactions in two geometries: rectangular and spherical. In the rectangular case, we model a planar shock approaching the surface at a constant angle phi. In the spherical case, the shock originates at a point below the surface of the domain and radiates spherically from that point. The angle of the shock front with the surface is dependent on the radial distance of the surface point from the shock origin. We model the target as a solid with a nonlinear Murnaghan equation of state. This idealized equation of state supports nonlinear shocks but is tem-perature independent. We track the maximum pressure and maximum velocity attained in every cell in our simula-tions and compare them to the Hugoniot equations that describe the material conditions in front of and behind the shock. Our simulations demonstrate that nonlinear shock interactions in the near surface produce lightly shocked high-velocity material for both planar and cylindrical shocks. The spall is the result of the free surface boundary condi-tion, which forces a pressure gradient from the peak shock pressure to the zero pressure boundary. The nonlinear shock interactions occur where the pressure contours curve to accommodate the free surface. The material within this spall zone is ejected at speeds up to 1.8 km s-1 for an imposed pulse of 1 km s-1. Where the ejection velocities are highest, the maximum pressure attained in each cell is effectively zero. We compare our simulation results with a model for nonlinear shock interactions proposed by Kamegai (1986). This model recognizes that the material behind the shock is compressed and has a higher soundspeed than the mate-rial in front of the shock. As the rarefaction wave moves behind the shock, its increased velocity through the com-pressed material combines with the residual particle velocity behind the shock to "catch up" with the shock. This occurs in the near surface where the sum of the compressed sound speed and the residual particle velocity is greater than or equal to the shock velocity. Initial results for the spherical shocks qualitatively match the volume described by this model, but differ significantly in the quantitative slope of the curve defining the region of interaction. We continue to test the Kamegai model with high-resolution numerical simulations of shock interactions to determine its potential application to planetary spallation.

Dispatch Scheduling of Automated Telescopes

NASA Astrophysics Data System (ADS)

Denny, R. B.

2004-05-01

Automated telescope scheduling systems have traditionally focused on optimiz- ing the use of the observatory, minimizing overhead and maximizing shutter- open time. However, educational and amateur observatories do not enjoy con- sistently good skies. Conditions can change significantly during an observing session, leading to schedule breakage. This gives rise to the need for a scheduling system that is capable of recovering from periods of bad skies, wind, etc. without operator intervention. The concept of dispatch scheduling, where the scheduler makes a "best" choice for the next observation, will be discussed. The choice of next target must consider constraints such as mini- mum altitude or maximum air mass, moon illumination, and sky condition, as well as timing constraints that may arise from linked observations and/or target phasing requirements. It also must be as fair and efficient as prac- tical. A dispatch scheduler (ACPS) was constructed and used to perform a num- ber of simulations with both isolated and multiple/linked observations, and noisy timing. By varying "best next target" choice algorithm, these simula- tions provided insight into the behavior of a dispatch scheduler. This talk will describe the scheduler and present the results of these preliminary sim- ulations, some conclusions that arose from them, and outline areas for fur- ther research.

Efficiently sampling conformations and pathways using the concurrent adaptive sampling (CAS) algorithm

DOE Office of Scientific and Technical Information (OSTI.GOV)

Ahn, Surl-Hee; Grate, Jay W.; Darve, Eric F.

Molecular dynamics (MD) simulations are useful in obtaining thermodynamic and kinetic properties of bio-molecules but are limited by the timescale barrier, i.e., we may be unable to efficiently obtain properties because we need to run microseconds or longer simulations using femtoseconds time steps. While there are several existing methods to overcome this timescale barrier and efficiently sample thermodynamic and/or kinetic properties, problems remain in regard to being able to sample un- known systems, deal with high-dimensional space of collective variables, and focus the computational effort on slow timescales. Hence, a new sampling method, called the “Concurrent Adaptive Sampling (CAS) algorithm,”more » has been developed to tackle these three issues and efficiently obtain conformations and pathways. The method is not constrained to use only one or two collective variables, unlike most reaction coordinate-dependent methods. Instead, it can use a large number of collective vari- ables and uses macrostates (a partition of the collective variable space) to enhance the sampling. The exploration is done by running a large number of short simula- tions, and a clustering technique is used to accelerate the sampling. In this paper, we introduce the new methodology and show results from two-dimensional models and bio-molecules, such as penta-alanine and triazine polymer« less

Finite-element modelling of physics-based hillslope hydrology, Keith Beven, and beyond

USGS Publications Warehouse

Loague, Keith; Ebel, Brian A.

2016-01-01

Keith Beven is a voice of reason on the intelligent use of models and the subsequent acknowledgement/assessment of the uncertainties associated with environmental simula-tion. With several books and hundreds of papers, Keith’s work is widespread, well known, and highly referenced. Four of Keith’s most notable contributions are the iconic TOPMODEL (Beven and Kirkby, 1979), classic papers on macropores and preferential flow (Beven and Germann, 1982, 2013), two editions of the rainfall-runoff modelling bible (Beven, 2000a, 2012), and the selection/commentary for the first volume from the Benchmark Papers in Hydrology series (Beven, 2006b). Remarkably, the thirty-one papers in his benchmark volume, entitled Streamflow Generation Processes, are not tales of modelling wizardry but describe measurements designed to better understand the dynamics of near-surface systems (quintessential Keith). The impetus for this commentary is Keith’sPhD research (Beven, 1975), where he developed a new finite-element model and conducted concept-development simu-lations based upon the processes identified by, for example, Richards (1931), Horton (1933), Hubbert (1940), Hewlett and Hibbert (1963), and Dunne and Black (1970a,b). Readers not familiar with the different mechanisms of streamflow generation are referred to Dunne (1978).

National Dam Inspection Program. Colonial Dam Number 1. (NDI Number PA-00206, PennDER Number 26-12) Ohio River Basin, Allen Run, Fayette County, Pennsylvania. Phase I Inspection Report,

DTIC Science & Technology

1980-05-01

the structure. It is important to note that the condition of the dam depends on numerous and constantly changing internal and external factors which are...observations of condi- tions as they existed on the date of the field inspec- tion, the general condition of the Colonial Dam No. 1 is considered to be fair ...95.53)( 75.71)( 36.90)( 16.26) S3mARr OF DAM SAFlMT ANALYSIS PLAN I ............... INITIAL VALUE SPLILWAT CREZS TOP OP DAM E.EVATION 966.00 966.00

Non-destructive Assay Measurements Using the RPI Lead Slowing Down Spectrometer

DOE Office of Scientific and Technical Information (OSTI.GOV)

Becker, Bjorn; Weltz, Adam; Kulisek, Jonathan A.

2013-10-01

The use of a Lead Slowing-Down Spectrometer (LSDS) is consid- ered as a possible option for non-destructive assay of fissile material of used nuclear fuel. The primary objective is to quantify the 239Pu and 235U fissile content via a direct measurement, distinguishing them through their characteristic fission spectra in the LSDS. In this pa- per, we present several assay measurements performed at the Rensse- laer Polytechnic Institute (RPI) to demonstrate the feasibility of such a method and to provide benchmark experiments for Monte Carlo cal- culations of the assay system. A fresh UOX fuel rod from the RPI Criticality Researchmore » Facility, a 239PuBe source and several highly en- riched 235U discs were assayed in the LSDS. The characteristic fission spectra were measured with 238U and 232Th threshold fission cham- bers, which are only sensitive to fission neutron with energy above the threshold. Despite the constant neutron and gamma background from the PuBe source and the intense interrogation neutron flux, the LSDS system was able to measure the characteristic 235U and 239Pu responses. All measurements were compared to Monte Carlo simula- tions. It was shown that the available simulation tools and models are well suited to simulate the assay, and that it is possible to calculate the absolute count rate in all investigated cases.« less

Development, Implementation, and Skill Assessment of the NOAA/NOS Great Lakes Operational Forecast System

DTIC Science & Technology

2011-01-01

USA) 2011 Abstract The NOAA Great Lakes Operational Forecast System ( GLOFS ) uses near-real-time atmospheric observa- tions and numerical weather...Operational Oceanographic Products and Services (CO-OPS) in Silver Spring, MD. GLOFS has been making operational nowcasts and forecasts at CO-OPS... GLOFS ) uses near-real-time atmospheric observations and numerical weather prediction forecast guidance to produce three-dimensional forecasts of water

The Impacts of Microphysics and Planetary Boundary Layer Physics on Model Simulations of U.S. Deep South Summer Convection

NASA Technical Reports Server (NTRS)

McCaul, Eugene W., Jr.; Case, Jonathan L.; Zavodsky, Bradley; Srikishen, Jayanthi; Medlin, Jeffrey; Wood, Lance

2014-01-01

Convection-allowing numerical weather simula- tions have often been shown to produce convective storms that have significant sensitivity to choices of model physical parameterizations. Among the most important of these sensitivities are those related to cloud microphysics, but planetary boundary layer parameterizations also have a significant impact on the evolution of the convection. Aspects of the simulated convection that display sensitivity to these physics schemes include updraft size and intensity, simulated radar reflectivity, timing and placement of storm initi- ation and decay, total storm rainfall, and other storm features derived from storm structure and hydrometeor fields, such as predicted lightning flash rates. In addition to the basic parameters listed above, the simulated storms may also exhibit sensitivity to im- posed initial conditions, such as the fields of soil temper- ature and moisture, vegetation cover and health, and sea and lake water surface temperatures. Some of these sensitivities may rival those of the basic physics sensi- tivities mentioned earlier. These sensitivities have the potential to disrupt the accuracy of short-term forecast simulations of convective storms, and thereby pose sig- nificant difficulties for weather forecasters. To make a systematic study of the quantitative impacts of each of these sensitivities, a matrix of simulations has been performed using all combinations of eight separate microphysics schemes, three boundary layer schemes, and two sets of initial conditions. The first version of initial conditions consists of the default data from large-scale operational model fields, while the second features specialized higher- resolution soil conditions, vegetation conditions and water surface temperatures derived from datasets created at NASA's Short-term Prediction and Operational Research Tran- sition (SPoRT) Center at the National Space Science and Technology Center (NSSTC) in Huntsville, AL. Simulations as outlined above, each 48 in number, were conducted for five midsummer weakly sheared coastal convective events each at two sites, Mobile, AL (MOB) and Houston, TX (HGX). Of special interest to operational forecasters at MOB and HGX were accuracy of timing and placement of convective storm initiation, reflectivity magnitudes and coverage, rainfall and inferred lightning threat.

The Use of Iterative Linear-Equation Solvers in Codes for Large Systems of Stiff IVPs (Initial-Value Problems) for ODEs (Ordinary Differential Equations).

DTIC Science & Technology

1984-04-01

numerical solution, of sstem ot stiff Wh-f Cr ODs. Fro- qontl. a substantial portia of the total computationskwok and cooap required! to solve stiff...exep, possl- bly, foreciadalms of problem. That is% a syste of linewat o nonlinear algebrac equa- tion mumt be solved at auk step of the numerical ...onjugate gradient method [431 is a mall-know ezuze, have prove to be particularly -2- efecti for solving the linear stwem that &ise in the numerical

Theoretical and Numerical Study of Anomalous Turbulent Transport in Plasmas

DTIC Science & Technology

1991-02-05

Balescu -Lenard equation in the classical limit. This result was presented at the APS Topical Conference on Plasma Astrophysics at Santa Fe in September...itself, which can be Incorporated as the effect of renormali- zation of the particle mass. 2 Tho derived equa- tion reduces to the Balescu -Lenard

Numerical Simulation of the Interaction of a Vortex with Stationary Airfoil in Transonic Flow,

DTIC Science & Technology

1984-01-12

Goorjian, P. M., "Implicit Vortex Wakes ," AIAA Journal, Vol. 15, No. 4, April Finite- Difference Computations of Unsteady Transonic 1977, pp. 581-590... Difference Simulations of Three- tion of Wing- Vortex Interaction in Transonic Flow Dimensional Flow," AIAA Journal, Vol. 18, No. 2, Using Implicit...assumptions are made in p = density modeling the nonlinear vortex wake structure. Numerical algorithms based on the Euler equations p_ = free stream density

SimulaTE: simulating complex landscapes of transposable elements of populations.

PubMed

Kofler, Robert

2018-04-15

Estimating the abundance of transposable elements (TEs) in populations (or tissues) promises to answer many open research questions. However, progress is hampered by the lack of concordance between different approaches for TE identification and thus potentially unreliable results. To address this problem, we developed SimulaTE a tool that generates TE landscapes for populations using a newly developed domain specific language (DSL). The simple syntax of our DSL allows for easily building even complex TE landscapes that have, for example, nested, truncated and highly diverged TE insertions. Reads may be simulated for the populations using different sequencing technologies (PacBio, Illumina paired-ends) and strategies (sequencing individuals and pooled populations). The comparison between the expected (i.e. simulated) and the observed results will guide researchers in finding the most suitable approach for a particular research question. SimulaTE is implemented in Python and available at https://sourceforge.net/projects/simulates/. Manual https://sourceforge.net/p/simulates/wiki/Home/#manual; Test data and tutorials https://sourceforge.net/p/simulates/wiki/Home/#walkthrough; Validation https://sourceforge.net/p/simulates/wiki/Home/#validation. robert.kofler@vetmeduni.ac.at.

Compact Numerical Function Generators Based on Quadratic Approximation: Architecture and Synthesis Method

DTIC Science & Technology

2006-12-01

Specifi- cation described by Scilab [19], a MATLAB-like software, into HDL code. The Design Specification consists of a func- tion f (x), a domain over x...In- ter. Conf. on Field Programmable Logic and Applications (FPL’05), pp.118–123, Tampere, Finland, Aug. 2005. [19] Scilab 3.0, INRIA-ENPC, France

The chemical evolution of Dwarf Galaxies with galactic winds - the role of mass and gas distribution

NASA Astrophysics Data System (ADS)

Hensler, Gerhard; Recchi, Simone

2015-08-01

Energetic feedback from Supernovae and stellar winds can drive galactic winds. Dwarf galaxies (DGs), due to their shallower potential wells, are assumed to be more vulnera-ble to these energetic processes. Metal loss through galactic winds is also commonly invoked to explain the low metal content of DGs.Our main aim in this presentation is to show that galactic mass cannot be the only pa-rameter determining the fraction of metals lost by a galaxy. In particular, the distribution of gas must play an equally important role. We perform 2-D chemo-dynamical simula-tions of galaxies characterized by different gas distributions, masses and gas fractions. The gas distribution can change the fraction of lost metals through galactic winds by up to one order of magnitude. In particular, disk-like galaxies tend to lose metals more easily than roundish ones. Consequently, also the final element abundances attained by models with the same mass but with different gas distributions can vary by up to one dex. Confirming previous studies, we also show that the fate of gas and freshly pro-duced metals strongly depends on the mass of the galaxy. Smaller galaxies (with shal-lower potential wells) more easily develop large-scale outflows; therefore, the fraction of lost metals tends to be higher.Another important issue is that the invoked mechanism to transform central cusps to cored dark-matter distributions by baryon loss due to strong galactic winds cannot work in general, must be critically tested, and should be clearly discernible by the chemical evolution of DGs.

Process control strategy for ITER central solenoid operation

NASA Astrophysics Data System (ADS)

Maekawa, R.; Takami, S.; Iwamoto, A.; Chang, H.-S.; Forgeas, A.; Chalifour, M.

2016-12-01

ITER Central Solenoid (CS) pulse operation induces significant flow disturbance in the forced-flow Supercritical Helium (SHe) cooling circuit, which could impact primarily on the operation of cold circulator (SHe centrifugal pump) in Auxiliary Cold Box (ACB). Numerical studies using Venecia®, SUPERMAGNET and 4C have identified reverse flow at the CS module inlet due to the substantial thermal energy deposition at the inner-most winding. To assess the reliable operation of ACB-CS (dedicated ACB for CS), the process analyses have been conducted with a dynamic process simulation model developed by Cryogenic Process REal-time SimulaTor (C-PREST). As implementing process control of hydrodynamic instability, several strategies have been applied to evaluate their feasibility. The paper discusses control strategy to protect the centrifugal type cold circulator/compressor operations and its impact on the CS cooling.

Digital Applications Development Training Achieves Big Successes

DTIC Science & Technology

2012-01-01

required in teaching mobile application develop- ment. Therefore, for the purposes of a pilot, it was determined that ISM students were the most...likely student group to benefit from mobile application development. LTC Gregory Motes was the chief of the Infor- mation Dissemination Management...mature, organiza- tions from inside and outside of TRADOC strug- gled to master mobile application development and numerous requests were made to the

Measurement and Calculation of Developing Turbulent Flow in a U-Bend and Downstream Tangent of Square Cross-Section.

DTIC Science & Technology

1981-12-01

fundamental experimental measurements have been made in a curved duct configura- tion of both industrial and academic significance. 3. Numerical...rne U r ad t -/tu ( u]u whee C hasute~l costt valu gie bseo The spatiaeraiono ielt is termined ur Oz a ru hihRynlsnubr i rpotoalt 32/,wer s h ae fdsspto

JPRS Report, Soviet Union: Political Affairs.

DTIC Science & Technology

1989-12-29

grown perceptibly in public life. At the Congress of Labor Collectives, a new organization was created —the Association of Soviets of Labor...the basic unit of self -administration, and uniting them in OSTKA creates a powerful mecha- nism for the republic’s self -administration. [Robert... creating a new reality. The numerous rallies, the sit-down demonstra- tions, and the strikes are already becoming commonplace. Armored personnel carriers

JPRS Report, Soviet Union, International Affairs.

DTIC Science & Technology

1987-11-27

becoming very relevant in this connection. One direct consequence is the need for closer interaction not only of the technical and production potential... personal computers, systems for numeric programmed control for functional machine tools and flexible produc- tion modules, programmable master... personality of the collective director— his enterprising nature, his ability to work in a new way (or his willing- ness to learn). "Even today many

Competitive Tradeoff Modeling: Methodology, Computation, and Testing

DTIC Science & Technology

1997-12-01

variational inequalities produced the dissertation of Ozge [4], which presented and justified a new method for numerical solution of stochastic...Philosophy (Industrial Engineering) in 1996. • A. Yonca Ozge , Research Assistant. Ms. Ozge received the degree of Doctor of Philosophy (Industrial...Ph.D. Disserta- tion, Department of Industrial Engineering, University of Wisconsin- Madison, 1996. [2] G. Gürkan, A. Y. Ozge , and S. M. Robinson

Acoustic Microscopy and Nonlinear Effects in Pressurized Superfluid Helium

DTIC Science & Technology

1993-08-31

Fresnel or parabolic approxi nations [16,17]. With the development of the Khokhlov-Zabolotskaya-Kuznetsov ( KZK ) paratolic equation [18,191, which...sound waves in a thermoviscous liquid by means of the KZK equation. (2) Hart and Hamilton [261 employed a con- vergent coordinate system that...improves the efficiency of the numerical solution of the KZK equa- tion for focused beams. (3) Lucas and Muir [27] developed an equivalency relationship

Manufacturing Technology Research Needs of the Gear Industry.

DTIC Science & Technology

1987-12-31

Management Shortcomings within the U.S. Precision Gear Industry ........... 33 2.2.7 European Gear and Machine Tool Companies ....... .. 35 2.2.8 German...manufacturing becomes more sophisticated, workers are running numerically con- trolled computer equipment requiring an understanding of math. 2.2.6.9 Management ...inefficiencies of the job shop environ- ment by managing the gear business as a backward integra- tion of the assembly line. o Develop and maintain

55 Nitinol Alloys

DTIC Science & Technology

1967-01-01

Urn 1~I.tion of-heat (courtesy of Goodyear C.2 Aerospace Corporation) Name derived from N i-Ti.NOL. Prefix numerical value (e.g., 55. Nitinol ... Nitinol plastically deformed below its critical, temperature (A5) will recover its original’ shape-when heated above its critical temperature, THIS...of Nitinol and other high damping materials is given in Reference 11. f WORKING CHARACTERISTICS: May be hot worked directly from the arc-melted ingot

United States Air Force Statistical Digest, Fiscal Year 1966, Twenty First Edition

DTIC Science & Technology

1966-09-30

Economic Repair "m.. Abnor- Normal Ene "", Flying Cause Ene "", Aban- MISSION, DESIGN,Tested Fair ""’ Storage AND SERIESum to De - Deter- Deter- Action... De - Wear Deter- Deter- on on on Non- mentor struc- and Iore- tors- Combat Combat Combat Combat Ene ""School tion Tear tion tion Mission Mission...AND SERIESFairum to De - .Deter- Deter- on on on Non- mentWearor strue- iora- tore- Combat Combat Combat Combat Ene "\\YandSchool tion tion tion Mission

Elucidating the Solvation Structure and Dynamics of Lithium Polysulfides Resulting from Competitive Salt and Solvent Interactions

DOE Office of Scientific and Technical Information (OSTI.GOV)

Rajput, Nav Nidhi; Murugesan, Vijayakumar; Shin, Yongwoo

2017-04-10

Fundamental molecular level understanding of functional properties of liquid solutions provides an important basis for designing optimized electrolytes for numerous applica-tions. In particular, exhaustive knowledge of solvation structure, stability and transport properties is critical for developing stable electrolytes for fast charging and high energy density next-generation energy storage systems. Here we report the correlation between solubility, solvation structure and translational dynamics of a lithium salt (Li-TFSI) and polysulfides species using well-benchmarked classical molecular dynamics simulations combined with nuclear magnetic resonance (NMR). It is observed that the polysulfide chain length has a significant effect on the ion-ion and ion-solvent interaction asmore » well as on the diffusion coefficient of the ionic species in solution. In particular, extensive cluster formation is observed in lower order poly-sulfides (Sx2-; x≤4), whereas the longer polysulfides (Sx2-; x>4) show high solubility and slow dynamics in the solu-tion. It is observed that optimal solvent/salt ratio is essen-tial to control the solubility and conductivity as the addi-tion of Li salt increases the solubility but decreases the mo-bility of the ionic species. This work provides a coupled theoretical and experimental study of bulk solvation struc-ture and transport properties of multi-component electro-lyte systems, yielding design metrics for developing optimal electrolytes with improved stability and solubility.« less

A Review of the Pilot Backache Problem in the CH113 Labrador Helicopter

DTIC Science & Technology

1985-12-01

and increasing the kyphosis may not, by itself, cause a higher incidence of backache. Based on the numerous reports of back pain and observa- tions...regular exer- cise Based on the symptoms identified in the questionnaire and the causes identified by other investigators, design principles for an...helicopter pilots and, the causes of helicopter induced backache. While the prevelnnce of backache is difficult to establish at any given time, consid

Manufacturing Technology Research Needs of the Gear Industry

DTIC Science & Technology

1987-12-31

Precision Gear Industry, . .... 31 2.2.6.8 Availability’of Skilied Craftsmen. o.... 32 2.2.6.9 Management Shortcomings within the U.S. Precision Gear...becomes more sophisticated, workers are running numerically con- trolled computer equipment requiring an understanding of math. I 2.2.6.9 Management ...inefficiencies of the job shop environ- ment by managing the gear business as a backward integra- tion of the assembly line. o Develop and maintain employee

A History of Army Aviation, 1950-1962. Phase 2: 1955-1962

DTIC Science & Technology

1976-11-01

belief that this probably would be the largest fixed wing aircraft capable of operation in forward areas and that it would be an economical and...opera- tions. CONARC on 18 September pointed out that the aero reconnais- sance concept differed from the SKY CAV concept in tactics and techniques...disclosed numerous inequities . Accordingly, CONARC recommended up- gradings or downgradings of aviator spaces in twenty of the TOE’s. 18 For a

China Report, Agriculture, Hubei Agricultural Geography

DTIC Science & Technology

1984-03-14

the growing of crops. Numerous farm crops, forest trees and pasture grasses are suited to growth in soil with a pH of between 6 and 8. Plants do...kinds of timber forest trees Fir [Abies fabri], dragon spruce [Picea asperata], China fir, Pinus armandi, birch, oaks, mountain poplar [Populus...half of which are in timber forests . The trees most used in construc- tion are massoon pine, oak, Chinese fir, Pinus armandi, Chinese pine [ Pinus

JPRS Report, Near East & South Asia

DTIC Science & Technology

1989-04-17

and recogni- tion, it was a way to win notoriety and establish its credentials as a real opposition party, therefore as a player . The pact enabled...and groups, but we do object to the style used by these newspapers in their treatment of sports. They concentrate much of their attention on soccer ...and they devote pages of the sports section to the game. In fact, numerous weekly newspapers that are devoted entirely to soccer are published

Assessment of the Flood Problems of the Taunton River Basin Massachusetts.

DTIC Science & Technology

1978-12-01

essential for fish and provides a habitat for numerous varieties of aquatic oriented wildlife species. Of the com- bined forested wetland and open forest...Detailed flood elevation data essential for operation of regula- tions. Flood velocities, flood duration, wave action, erosion pr,,- blems and other...along with the preservation of as much trees and shrubs are essential . Where possible fast growing annual grass seed should be used, intermixed with

Multi-Scale Fusion of Information for Uncertainty Quantification and Management in Large-Scale Simulations

DTIC Science & Technology

2015-12-02

simplification of the equations but at the expense of introducing modeling errors. We have shown that the Wick solutions have accuracy comparable to...the system of equations for the coefficients of formal power series solutions . Moreover, the structure of this propagator is seemingly universal, i.e...the problem of computing the numerical solution to kinetic partial differential equa- tions involving many phase variables. These types of equations

Multi-shell model of ion-induced nucleic acid condensation

DOE Office of Scientific and Technical Information (OSTI.GOV)

Tolokh, Igor S.; Drozdetski, Aleksander V.; Pollack, Lois

2016-04-21

We present a semi-quantitative model of condensation of short nucleic acid (NA) duplexes in- duced by tri-valent cobalt hexammine (CoHex) ions. The model is based on partitioning of bound counterion distribution around single NA duplex into “external” and “internal” ion binding shells distinguished by the proximity to duplex helical axis. The duplex aggregation free energy is de- composed into attraction and repulsion components represented by simple analytic expressions. The source of the short-range attraction between NA duplexes in the aggregated phase is the in- teraction of CoHex ions in the overlapping regions of the “external” shells with the oppositely chargedmore » duplexes. The attraction depends on CoHex binding affinity to the “external” shell of nearly neutralized duplex and the number of ions in the shell overlapping volume. For a given NA duplex sequence and structure, these parameters are estimated from molecular dynamics simula- tion. The attraction is opposed by the residual repulsion of nearly neutralized duplexes as well as duplex configurational entropy loss upon aggregation. The estimates of the aggregation free energy are consistent with the experimental range of NA duplex condensation propensities, including the unusually poor condensation of RNA structures and subtle sequence effects upon DNA conden- sation. The model predicts that, in contrast to DNA, RNA duplexes may condense into tighter packed aggregates with a higher degree of duplex neutralization. The model also predicts that longer NA fragments will condense easier than shorter ones. The ability of this model to explain experimentally observed trends in NA condensation, lends support to proposed NA condensation picture based on the multivalent “ion binding shells”.« less

Electromagnetic Metrics of Mental Workload.

DTIC Science & Technology

1987-09-01

anxiety ). A decrease in performance accuracy has been used in the context of over- load, however it has also been associated with a "high workload". 1.2...heart rate variability ( HRV ) to refer to any varia- tion from a constant heart rate. The term HRV shall not refer to any specific method of numerically...in using HRV as a measure of mental load arose after Kalsbeek & Ettema (1963) reported that HRV was "gradu- ally suppressed when increasing the

Technology Assessment of Avanced propulsion Systems for Some Classes of Combat Vehicles. Volume 3. Appendices G-M.

DTIC Science & Technology

1978-09-01

generally recognized that the best possible configura- tion for engines operating at high speeds and at high-pressure levels is probably the single...engines is invariably accom- plished by the operation of computer simulation models that generate specific numerical data rather than the generalized re...lationships common to other forms of prime mover based on units of mass or volume. Thus, providing such generalized relation- ships for a Stirling

A Program Manager’s Methodology for Developing Structured Design in Embedded Weapons Systems.

DTIC Science & Technology

1983-12-01

the hardware selec- tion. This premise has been reiterated and substantiated by numerous case studies performed in recent years among them Barry ...measures, rules of thumb, and analysis techniques, this method with early development by re Marco is the basis for the Pressman design methcdology...desired traits of a design based on the specificaticns generated, but does not include a procedure for realizat or" of the design. Pressman , (Ref. 5

Constraints on the Dark Matter Particle Mass from the Number of Milky Way Satellites

DTIC Science & Technology

2010-04-12

but our lower mass limits do not necessarily apply to mixed dark matter cosmologies . Higgs decay produced sterile neutrinos can, however, constitute...simulations of the growth of Milky Way-sized halos in cold and warm dark matter cosmologies . The number of dark matter satellites in our simulated Milky...tions of WDM cosmologies due to numerical artifacts produced by discrete sampling of the gravitational poten- tial with a finite number of particles

A Model to Study: Cannibalization, FMC, and Customer Waiting Time

DTIC Science & Technology

2002-02-01

4825 Mark Center Drive • Alexandria, Virginia 22311-1850 CRM D0005957.A2/Final February 2002 A Model to Study: Cannibalization, FMC, and Customer ...numerical example In this section, we will derive the relationship between cannibaliza- tion rates, customer waiting time (CWT) for needed spare parts... relationships between the FMC given by equation 1, the mean customer wait time for spare parts, denoted µ, and the 5. According to [19], not every part can be

Cone-Beam Computed Tomography for Image-Guided Radiation Therapy of Prostate Cancer

DTIC Science & Technology

2008-01-01

forexa t volumetri image re onstru tion. As a onsequense, images re onstru ted by approx-imate algorithms, mostly based on the Feldkamp algorithm...patient dose from CBCT. Reverse heli al CBCT has been developed for exa tre onstru tion of volumetri images, region-of-interest (ROI) re onstru tion...algorithm with a priori informa-tion in few-view CBCT for IGRT. We expe t the proposed algorithm an redu e the numberof proje tions needed for volumetri

Discrete-Event Simulation in Chemical Engineering.

ERIC Educational Resources Information Center

Schultheisz, Daniel; Sommerfeld, Jude T.

1988-01-01

Gives examples, descriptions, and uses for various types of simulation systems, including the Flowtran, Process, Aspen Plus, Design II, GPSS, Simula, and Simscript. Explains similarities in simulators, terminology, and a batch chemical process. Tables and diagrams are included. (RT)

Numerical Analysis of Laminated, Orthotropic Composite Structures

DTIC Science & Technology

1975-11-01

the meridian plane. In the first model , a nine degree-of-freedom, straight sided, tri- angular element was used. In this element, the three...E ■ 13.79 GPa v«. ■ «25» 6.. ■ 4.82 GPa ns its V . « .25, G. « 4.82 GPa nt nt vst * ,4S» 6st * 1*379 6P...means zero values of axial accelera- tion, and angular acceleration and velocity for each load increment) NLINC (Number of load increments with time

Numerical Simulation of Tip Vortices of Wings in Subsonic and Transonic Flows,

DTIC Science & Technology

1986-01-01

roll-up of the tip vor- rv : dimensionless strength of tip vortex " tex in both subsonic and transonic flows. Four test cases which used small and large...of their po- tion and the roll-up of the tip vortex has been observed for tential hazard to aircraft that encounter them in flight. To all the cases...such flows encompassing large air- tip- vortex strength. craft wakes (see for example Refs. 1-2). In spite of this, the present understanding of such

Numerical Analysis in Fracture Mechanics.

DTIC Science & Technology

1983-01-20

pressuriza- tion has also been solved [66] by the HEMP code. The advantage of such supercode, however, lies in its ability to analyze elastic- plastic ...analyzing the elasto-dynamic and elastic- plastic dynamic states In fracturing 2- and 3-D prob’ems. The use of a super finite difference code to study...the finite difference elastic- plastic result of Jacobs in 1950 [2J which was followed by others In the 1960’s [3 - 5). Swedlow et al [6], on the other a

State-of-the-Art in Improved Parts Programming for Numerically Controlled Machines

DTIC Science & Technology

1976-10-01

than expected let sizes for IIC. Cincinnati lilbcron, Inc., has built a $1.25 million Computer Ilumerical Control ( CNC ) 1,4nufacturing Center to "rw’ t...point-to- point user. Lathe and other turning operations are essentially two-axis opera- tions, and there has been some dissatisfaction over APT’s...a.particular machi-ne (50)." "Software is the key to CNC , the costs of which are easily overlooked. The cost of software development is growing in relation to

Assessing air quality impacts of managed lanes : summary.

DOT National Transportation Integrated Search

2010-01-01

Researchers at the National Center for Transit Research, University of South Florida, recently studied a segment of I-95 between Ft. Lauderdale and Miami to investigate the impacts of high-occupancy/toll (HOT) lanes on air quality. The project simula...

49 CFR 1242.13 - Administration-communica- tions (account XX-19-05).

Code of Federal Regulations, 2010 CFR

2010-10-01

... 49 Transportation 9 2010-10-01 2010-10-01 false Administration-communica- tions (account XX-19-05... Structures § 1242.13 Administration—communica- tions (account XX-19-05). Separate common administration... (XX-19-20) ...

Simulações Numéricas de Rotação Nuclear Cometária

NASA Astrophysics Data System (ADS)

Voelzke, M. R.; Winter, O. C.

1999-08-01

Este trabalho apresenta os resultados iniciais de simulações numéricas da evolução rotacional, de um núcleo cometário não esférico, ao longo de uma passagem periélica, levando-se em conta os torques devido a existência dos jatos de poeira e de gás. Inicialmente os autores apresentam um modelo simples (primeira aproximação), com somente um único jato na extremidade do semi-eixo maior, para compreender a variação positiva ou negativa que estas forças não gravitacionais exercem sobre o período de rotação cometário. Posteriormente incrementa-se o número de jatos, os quais são distribuídos ao longo da superfície cometária, para observar-se a contribuição dos efeitos provenientes dos torques originários da liberação da poeira e gás cometários, que provavelmente violará a suposição da livre precessão. Os estados rotacionais, sob torques induzidos devido à sublimação, dependem fortemente da localização das áreas ativas do núcleo. Os cometas P/Schwassmann-Wachmann 1, P/Tempel 2, P/Forbes e C/Meunier-Dupouy serão observados fotometricamente, pelos autores, no Laboratório Nacional de Astrofísica (LNA) ao longo de algumas noites consecutivas em abril, junho e julho de 1999. Estas observações serão comparadas com as simulações numéricas de rotação cometária.

UNCERTAINTY AND SENSITIVITY ANALYSES FOR VERY HIGH ORDER MODELS

EPA Science Inventory

While there may in many cases be high potential for exposure of humans and ecosystems to chemicals released from a source, the degree to which this potential is realized is often uncertain. Conceptually, uncertainties are divided among parameters, model, and modeler during simula...

Open transverse-slot substrate-integrated waveguide sensor for biomass permittivity determination

USDA-ARS?s Scientific Manuscript database

A novel open transverse-slot substrate-integrated waveguide sensor is presented. The sensor is designed and fabricated for dielectric poperties measurements on sawdust at 8 GHz. Different configurations of the sensor were investigated by using simulation software and relationships between the simula...

Bibliography on Cold Regions Science and Technology. Volume 33, Part 1 and Part 2

DTIC Science & Technology

1979-12-01

334020 (1978, p 4.10, ruas 33-2685 young sea ice. Niedrauer, T.M., et a ). t1979, High speed tunneling. Tnrasiugin, A , (1978, p.10-t1I, rust Manual fnr...resist- tions In the western High Arctic. Snowi loatd Roofes Sgnowpyis no cu a ance, Test equipment. Bliss, LC., ed, Canada, Arctic Land Use Research toi...permafrost foundation of a Effect of cryogenous processes on the stability of high Numerical solution of problems of the Stefan type for multispsa industrial

Air Force Health Study (Project RANCH HAND II). An Epidemiologic Investigation of Health Effects in Air Force Personnel Following Exposure to Herbicides. Baseline Morbidity Study Results

DTIC Science & Technology

1984-02-24

of body fat appeared to be reasonably normal in its distribu- tion. No signif icant differences were detected between the variances (P- 0.34) or the...a minor or undetermined nature , that require detailed fol.low-up. In full context, the baseline study results should be viewed as reassuring to the...The study has disclosed numerous medical findings, mostly of a minor or undetermined nature , that require " detailed follow-up. in full context, the

National Program for Inspection of Non-Federal Dams. Crystal Lake Dam (CT00097), Lower Housatonic River Basin, Torrington, Connecticut. Phase I Inspection Report.

DTIC Science & Technology

1980-02-01

sufficient spillway capacity to discharge fifty percent of the PKF , should be adjudged as having a seriously inadequate spillway and the dam assessed...having a high hazard potential. *The dam is judged to be in generally fair condition. The crest of the dam has a slight undulation and is subjected to...that the condition of a dam depends on numerous and constantly changing internal and external condi- tions, and is evolutionary in nature. It would be

Singular Differential Game Numerical Technique and Closed Loop Guidance and Control Strategies,

DTIC Science & Technology

1982-03-01

zero sum games one player tries to minimize and the other player tries to maxwm e payoff functions. In such games a saddle point solu- tion is sought...period- ically in a a-all time interval At tK - ti, i - O,,. e . Whe the game starts running, the pursuer takes a measurement at t 1 t 0 + At and...Loop Solutions to Non-Linear-Zero-Sum Differential Games ," Int. J. Syst., Vol. 7 (5), 1976. 41 . Johnson, D. E ., Convergence Properties of the Method

Transient Combustion in Granular Propellant Beds. Part I. Theoretical Modeling and Numerical Solution of Transient Combustion Processes in Mobile Granular Propellant Beds

DTIC Science & Technology

1977-08-01

TR~ANSIENT COMBUSTION PROCESSES IN MOBILE GRANULAR PROPELLANT BEDS Prqprid by The Pennsylvania Stats UnIversiV 197 Dopartme of Nmchanica! EngwineerIng...the ignition and flame spreadinb prc-eases by assuming that the granular propillents are fixed in space; and 3) modeling cf mobile granular beds so...through an aggrtgate of mobile "’actin&, partic~vi. The diffevewsoa Wi derivation of conservation equa~tions betvewu our approacit md this -f a Aivorain

The Spectral Ocean Wave Model (SOWM), a Northern Hemisphere Computer Model for Specifying and Forecasting Ocean Wave Spectra

DTIC Science & Technology

1982-07-01

directions. SIGNIFICANT WAVE HEIGHT A further sua-tion of (3) over the 15 frequency bands yields, within a linear model , the variance of a time history of...SPECTRAL Of.EAN WAVE MODEL (SOWM), A NORTHERN Final Report HEMtISPHEE COMPUTER MODELL Foyt SPECIFYING AND FORECASTING OCEAN WAVE .SftfTRA S EFRIGOG...Ocean Wave Model (SWM() In use at the Fleet Numerical Oceanography Center si.nce 1974 has been used to produce spectra for a 20- year ocean wave

Compost improves urban soil and water quality

USDA-ARS?s Scientific Manuscript database

Construction in urban zones compacts the soil, which hinders root growth and infiltration and may increase erosion, which may degrade water quality. The purpose of our study was to determine the whether planting prairie grasses and adding compost to urban soils can mitigate these concerns. We simula...

The HexSim Model

EPA Science Inventory

HexSim version 2.0 is soon to be released by EPA's Western Ecology Division (WED). More than three years of work have gone into the development of this tool, which grew out of an EPA model called PATCH. HexSim makes it possible for non-programmers to develop sophisticated simula...

The Collins Center Update. Volume 3, Issue 4, July-September 2001

DTIC Science & Technology

2001-09-01

Centric Oper­ a tions, Assured Access, Speed of Effects , and In for ma tion/Knowl edge Advan tage—in a Small-Scale Contin gency set in 2011. The game...design also incor po rated the U.S. Air Force concept for Effects -Based Oper a tions (EBO), JFCOM’s concept for Rapid Deci­ sive Oper a tions (RDO...the “ effects based” planning process, the game illu mi nated poten tially signif i cant insights re gard ing “limited” war, rules of engage ment

UNCERTAINTY AND SENSITIVITY ANALYSES FOR INTEGRATED HUMAN HEALTH AND ECOLOGICAL RISK ASSESSMENT OF HAZARDOUS WASTE DISPOSAL

EPA Science Inventory

While there is a high potential for exposure of humans and ecosystems to chemicals released from hazardous waste sites, the degree to which this potential is realized is often uncertain. Conceptually divided among parameter, model, and modeler uncertainties imparted during simula...

A Modeling Study of the Influence of Hemispheric Transport on Trends in O3 Distributions Over North America

EPA Science Inventory

Changing emission patterns across the globe are resulting in heterogeneous changes in tropospheric chemical composition and likely altering the long-range transport of air pollutants and their impact at receptor regions. In this study, we combine results from multi-decadal simula...

PCR-based detection of micro-organisms in extreme environments during the EuroGeoMars MDRS campaign

NASA Astrophysics Data System (ADS)

Thiel, Cora S.; Ullrich, Oliver

Deoxyribonucleic acid (DNA) is found in all known living organisms and some viruses on earth. The main function of DNA molecules is the long-term storage of genetic information. They are passed on from generation to generation as the hereditary material. The polymerase chain reaction (PCR) is a revolutionary technique which allows amplifying a single or few copies of DNA molecules across several orders of magnitude, generating millions of copies of the original DNA fragment allowing detection of minimal traces of DNA. The compactness of the nowadays PCR instruments makes routine sample analysis possible with only a minimum of laboratory space. Our goal was to establish a routine for detection of DNA from micro-organisms based on the effective but also robust and simple PCR technique during the EuroGeoMars simula-tion campaign at The Mars Society's Mars Desert Research Station (MDRS) in February 2009. During the MDRS simulation we were able to show that it is possible to establish a minimal molecular biology lab in the habitat for an immediate on-site analysis by PCR after sample collection. Soil and water samples were taken from different locations and soil depths. The sample analysis was started immediately after returning to the habitat and was completed dur-ing the following days. DNA was isolated from micro-organisms and was used as a template for PCR analysis of the highly conserved ribosomal DNA to identify representatives of the different groups of micro-organisms (archaea, bacteria, eukaryotes). PCR products were visualized by agarose gel electrophoresis and documented by UV-transilluminator and digital camera. For the first time it was possible to demonstrate a direct on-site DNA analysis by PCR at MDRS, situated in an extreme environment that functions as a model for preparation and optimization of techniques to be used for future Mars exploration.

A Parallel Numerical Micromagnetic Code Using FEniCS

NASA Astrophysics Data System (ADS)

Nagy, L.; Williams, W.; Mitchell, L.

2013-12-01

Many problems in the geosciences depend on understanding the ability of magnetic minerals to provide stable paleomagnetic recordings. Numerical micromagnetic modelling allows us to calculate the domain structures found in naturally occurring magnetic materials. However the computational cost rises exceedingly quickly with respect to the size and complexity of the geometries that we wish to model. This problem is compounded by the fact that the modern processor design no longer focuses on the speed at which calculations are performed, but rather on the number of computational units amongst which we may distribute our calculations. Consequently to better exploit modern computational resources our micromagnetic simulations must "go parallel". We present a parallel and scalable micromagnetics code written using FEniCS. FEniCS is a multinational collaboration involving several institutions (University of Cambridge, University of Chicago, The Simula Research Laboratory, etc.) that aims to provide a set of tools for writing scientific software; in particular software that employs the finite element method. The advantages of this approach are the leveraging of pre-existing projects from the world of scientific computing (PETSc, Trilinos, Metis/Parmetis, etc.) and exposing these so that researchers may pose problems in a manner closer to the mathematical language of their domain. Our code provides a scriptable interface (in Python) that allows users to not only run micromagnetic models in parallel, but also to perform pre/post processing of data.

Influence of fuel properties on internal nozzle flow development in a multi-hole diesel injector

DOE Office of Scientific and Technical Information (OSTI.GOV)

Torelli, Roberto; Som, Sibendu; Pei, Yuanjiang

Fuel phys­i­cal prop­er­ties are known to in­flu­ence in-noz­zle flow be­hav­ior, in turn af­fect­ing spray for­ma­tion in in­ter­nal com­bus­tion en­gines. A se­ries of 3D sim­u­la­tions was per­formed to model the in­ter­nal noz­zle flow in a five-hole mini-sac diesel in­jec­tor. The goal of the study was to eval­u­ate the be­hav­ior of two gaso­line-like fu­els (full-range naph­tha and light naph­tha) and com­pare them against n-Do­de­cane, se­lected from a palette used as a diesel sur­ro­gate. Sim­u­la­tions were car­ried out us­ing a multi-phase flow rep­re­sen­ta­tion based on the mix­ture model as­sump­tion with the Vol­ume of Fluid (VOF) method, and in­clud­ing cav­i­ta­tion ef­fects by means ofmore » the Ho­mo­ge­neous Re­lax­ation Model (HRM). Val­i­dated method­olo­gies from our pre­vi­ous stud­ies were em­ployed to ac­count for full nee­dle mo­tion. De­tailed sim­u­la­tions re­vealed the in­flu­ence of the fuel prop­er­ties on in­jec­tor per­for­mance, in­jected fuel en­ergy and propen­sity to cav­i­ta­tion. The three fu­els were com­pared with re­spect to global pa­ra­me­ters such as mass flow rate and area con­trac­tion co­ef­fi­cients, and lo­cal pa­ra­me­ters such as pres­sure and ve­loc­ity dis­tri­b­u­tion in­side the sac and ori­fices. Para­met­ric in­ves­ti­ga­tions were also per­formed to un­der­stand the fuel re­sponse to changes in the fuel in­jec­tion tem­per­a­ture, in­jec­tion pres­sure, and geom­e­try de­tails. Cav­i­ta­tion mag­ni­tude was ob­served to be strongly as­so­ci­ated with the val­ues of sat­u­ra­tion pres­sure. Ow­ing to their higher volatil­ity, the two gaso­line-like fu­els were ob­served to cav­i­tate more than n-Do­de­cane across all the in­ves­ti­gated con­di­tions. While at full nee­dle lift cav­i­ta­tion was re­duced for all fu­els, dur­ing the in­jec­tion tran­sients the gaso­line-like fu­els showed more propen­sity to cav­i­tate in­side the ori­fice and seat re­gions. This is ex­pected to have a pro­found in­flu­ence on noz­zle ero­sion. Al­though full-range and light naph­tha have lower den­si­ties com­pared to n-Do­de­cane, ow­ing to their lower vis­cos­ity, the mass flow rate dif­fer­ences be­tween the naph­tha fu­els and n-Do­de­cane were small. In conclusion, the analy­sis of fuel en­ergy con­tent showed that the higher lower heat­ing value (LHV) of light naph­tha helped com­pen­sate for the slightly lower to­tal de­liv­ered mass.« less

Influence of fuel properties on internal nozzle flow development in a multi-hole diesel injector

DOE PAGES

Torelli, Roberto; Som, Sibendu; Pei, Yuanjiang; ...

2017-05-31

Fuel phys­i­cal prop­er­ties are known to in­flu­ence in-noz­zle flow be­hav­ior, in turn af­fect­ing spray for­ma­tion in in­ter­nal com­bus­tion en­gines. A se­ries of 3D sim­u­la­tions was per­formed to model the in­ter­nal noz­zle flow in a five-hole mini-sac diesel in­jec­tor. The goal of the study was to eval­u­ate the be­hav­ior of two gaso­line-like fu­els (full-range naph­tha and light naph­tha) and com­pare them against n-Do­de­cane, se­lected from a palette used as a diesel sur­ro­gate. Sim­u­la­tions were car­ried out us­ing a multi-phase flow rep­re­sen­ta­tion based on the mix­ture model as­sump­tion with the Vol­ume of Fluid (VOF) method, and in­clud­ing cav­i­ta­tion ef­fects by means ofmore » the Ho­mo­ge­neous Re­lax­ation Model (HRM). Val­i­dated method­olo­gies from our pre­vi­ous stud­ies were em­ployed to ac­count for full nee­dle mo­tion. De­tailed sim­u­la­tions re­vealed the in­flu­ence of the fuel prop­er­ties on in­jec­tor per­for­mance, in­jected fuel en­ergy and propen­sity to cav­i­ta­tion. The three fu­els were com­pared with re­spect to global pa­ra­me­ters such as mass flow rate and area con­trac­tion co­ef­fi­cients, and lo­cal pa­ra­me­ters such as pres­sure and ve­loc­ity dis­tri­b­u­tion in­side the sac and ori­fices. Para­met­ric in­ves­ti­ga­tions were also per­formed to un­der­stand the fuel re­sponse to changes in the fuel in­jec­tion tem­per­a­ture, in­jec­tion pres­sure, and geom­e­try de­tails. Cav­i­ta­tion mag­ni­tude was ob­served to be strongly as­so­ci­ated with the val­ues of sat­u­ra­tion pres­sure. Ow­ing to their higher volatil­ity, the two gaso­line-like fu­els were ob­served to cav­i­tate more than n-Do­de­cane across all the in­ves­ti­gated con­di­tions. While at full nee­dle lift cav­i­ta­tion was re­duced for all fu­els, dur­ing the in­jec­tion tran­sients the gaso­line-like fu­els showed more propen­sity to cav­i­tate in­side the ori­fice and seat re­gions. This is ex­pected to have a pro­found in­flu­ence on noz­zle ero­sion. Al­though full-range and light naph­tha have lower den­si­ties com­pared to n-Do­de­cane, ow­ing to their lower vis­cos­ity, the mass flow rate dif­fer­ences be­tween the naph­tha fu­els and n-Do­de­cane were small. In conclusion, the analy­sis of fuel en­ergy con­tent showed that the higher lower heat­ing value (LHV) of light naph­tha helped com­pen­sate for the slightly lower to­tal de­liv­ered mass.« less

SIMULAÇÃO E PROJECTO DE PROCESSOS QUÍMICOS CONSIDERANDO ASPECTOS ECONÓMICOS E AMBIENTAIS (PORTUGESE)

EPA Science Inventory

In this article the hydrodealkylation (HDA) process is studied and two process alternatives are compared: removing and recycling biphenyl. Since the unwanted biphenyl is formed by a reversible reaction the alternative of recycling biphenyl with toluene to let it build up to an eq...

Technical Leadership Development Program

DTIC Science & Technology

2014-04-30

will be focused on their view of the pros / cons of the ‘how’ they are going about their assigned task as opposed to ‘what’ they are proposing. As...Leadership Style (Y) M4.0 Simula on 1- Leadership Value Proposi on (Y) Some hidden (secret) mo va ons for roles in scenarios/vigne es Develop SWOT

LINKING SOLID PHASE SPECIATION OF PB SEQUESTERED TO BIRNESSITE TO ORAL PB BIOACCESSIBLITY: IMPLICATIONS FOR SOIL REMEDIATION

EPA Science Inventory

Lead (Pb) sorption onto oxide surfaces in soils may strongly influence the risk posed from incidental ingestion of lead-contaminated soils. In this study, Pb was sorbed to a model soil mineral, birnessite, and was placed in a simulated gastrointestinal tract (in vitro) to simula...

A Simple Physical Model for Spall from Nuclear Explosions Based Upon Two-Dimensional Nonlinear Numerical Simulations

DTIC Science & Technology

1990-05-01

forms included (1) analytic distribu- tions of initial velocities which initiate at the same instant across the crack ( t o is con - stant), (2) random...gAH(O,tl) + (19) [jLVgf (Vg)- gMo (vg ,V2 )]AH(t1l,t2) We note that for any distribution d)(v), the high frequency response will be dominated by the 8...body waves from the tension crack model is a narrowband signal. To see this, consider Equation (25). As w-O, P (co) approaches a constant pro

Two-Dimensional Numerical Model of coupled Heat and Moisture Transport in Frost Heaving Soils.

DTIC Science & Technology

1982-08-01

integrated relations become: The exact solution is the %%ell-known series expansion: At -11)e )+bO! -201, +Li j I:IAx), " 2" 4 ,, sin 3 .x )fx. t=-szf...giethe complete mab balance formula tion. Integrating .patiall% and temporall % on eac:n R ~ .% fl, Icc .1’l i l Ilt,.’. ,l~llc "jaJ i l C tl~ I1I’ .El~lt...diffusivity model can be approximately linearized by using values of diffusivitv assumed constant for small intervals of space and time. By a series expansion

DEVELOPMENT OF MULTI-PHASE AND MULTI-COMPONENT FLOW MODEL WITH REACTION IN POROUS MEDIA FOR RISK ASSESSMENT ON SOIL CONTAMINATION DUE TO MINERAL OIL

NASA Astrophysics Data System (ADS)

Sakamoto, Yasuhide; Nishiwaki, Junko; Hara, Junko; Kawabe, Yoshishige; Sugai, Yuichi; Komai, Takeshi

In late years, soil contamination due to mineral oil in vacant lots of oil factory and oil field has become obvious. Measure for soil contamina tion and risk assessment are neces sary for sustainable development of industrial activity. Especially, in addition to contaminated sites, various exposure paths for human body such as well water, soil and farm crop are supposed. So it is very important to comprehend the transport phenomena of contaminated material under the environments of soil and ground water. In this study, mineral oil as c ontaminated material consisting of mu lti-component such as aliphatic and aromatic series was modeled. Then numerical mode l for transport phenomena in surface soil and aquifer was constructed. On the basis of modeling for mineral oil, our numerical model consists of three-phase (oil, water and gas) forty three-component. This numerical model becomes base program for risk assessment system on soil contamination due to mineral oil. Using this numerical model, we carried out some numerical simulation for a laboratory-scale experiment on oil-water multi-phase flow. Relative permeability that dominate flow behavior in multi-phase condition was formulated and the validity of the numerical model developed in this study was considered.

Uncertainty in measurements of the photorespiratory CO2 compensation point and its impact on models of leaf photosynthesis

USDA-ARS?s Scientific Manuscript database

Rates of carbon dioxide assimilation through photosynthesis are readily modeled through the Farquhar, von Caemmerer and Berry (FvCB) model based on the biochemistry of the initial Rubisco-catalyzed reaction of net C3 carbon assimilation. As models of CO2 assimilation are used more broadly for simula...

HART-II: Prediction of Blade-Vortex Interaction Loading

DTIC Science & Technology

2003-09-01

14:30 (2) Improvement of DLR Rotor Aero- acoustic Code ( APSIM ) and its Valida- tion with Analytic Solution J. Yin, J. Delfs (5...of DLR Rotor Aero- acoustic Code ( APSIM ) and its Valida- tion with Analytic Solution J. Yin, J. Delfs (5) Aeroelastic Stability Analysis of...of DLR Rotor Aero- acoustic Code ( APSIM ) and its Valida- tion with Analytic Solution J. Yin, J. Delfs (5) Aeroelastic Stability Analysis of

Numerical Simulation of A Right-moving Storm Over France

NASA Astrophysics Data System (ADS)

Chancibault, K.; Ducrocq, V.; Lafore, J.-Ph.

A three-dimensional non-hydrostatic mesoscale model is used to simulate the right- moving storm produced through storm splitting, on 30 may 1999, over northern France. The initial state is provided by the French 3D-var ARPEGE analysis and the simuation is performed with two interactive nested domains. The aim of this study is to improve our understanding of such storm dynamics. A vor- ticity analysis has been carried out, with emphasis on stretching and tilting terms of the vertical vorticity equation, thanks to the backward trajectories. The baroclinic produc- tion and stretching terms of the horizontal vorticity equation have also been studied to understand the interaction between the horizontal vorticity and a mesoscale thermal line. Finally, the spatial and temporal variation of the Storm Relative Environmental Helicity has been examined. Most of the results compare well with previous results on right-moving storms ob- tained from theoritical or numerical studies from idealized homogeneous base state.

EPIC Muon Cooling Simulations using COSY INFINITY

DOE Office of Scientific and Technical Information (OSTI.GOV)

J.A. Maloney, B. Erdelyi, A. Afanasev, R.P. Johnson, S.A. Bogacz, Y.S. Derbenev, V.S. Morozov

2011-03-01

Next gen­er­a­tion mag­net sys­tems need­ed for cool­ing chan­nels in both neu­tri­no fac­to­ries and muon col­lid­ers will be in­no­va­tive and com­pli­cat­ed. De­sign­ing, sim­u­lat­ing and op­ti­miz­ing these sys­tems is a chal­lenge. Using COSY IN­FIN­I­TY, a dif­fer­en­tial al­ge­bra-based code, to sim­u­late com­pli­cat­ed el­e­ments can allow the com­pu­ta­tion and cor­rec­tion of a va­ri­ety of high­er order ef­fects, such as spher­i­cal and chro­mat­ic aber­ra­tions, that are dif­fi­cult to ad­dress with other sim­u­la­tion tools. As an ex­am­ple, a he­li­cal dipole mag­net has been im­ple­ment­ed and sim­u­lat­ed, and the per­for­mance of an epicyclic para­met­ric ion­iza­tion cool­ing sys­tem for muons is stud­ied and com­pared to sim­u­la­tions made usingmore » G4Beam­line, a GEAN­T4 toolk­it.« less

Cone-Beam Computed Tomography for Image-Guided Radiation Therapy of Prostate Cancer

DTIC Science & Technology

2010-01-01

ltered ba kproje tion (FBP) al-gorithm that does not depend upon the hords hastherefore been developed for volumetri image re- onstru tion in a...reproje tion of the rst re onstru ted volumetri image. The NCAT 6 phantom images re onstru ted by the tandem algorithm are shown in Fig. 3. The paper...algorithm has been applied to a ir ular one-beam mi ro-CT for volumetri images of the ROIwith a higher spatial resolution and at a redu edexposure to

Theory and modelling of light-matter interactions in photonic crystal cavity systems coupled to quantum dot ensembles

NASA Astrophysics Data System (ADS)

Cartar, William K.

Photonic crystal microcavity quantum dot lasers show promise as high quality-factor, low threshold lasers, that can be integrated on-chip, with tunable room temperature opera- tions. However, such semiconductor microcavity lasers are notoriously difficult to model in a self-consistent way and are primarily modelled by simplified rate equation approxima- tions, typically fit to experimental data, which limits investigations of their optimization and fundamental light-matter interaction processes. Moreover, simple cavity mode optical theory and rate equations have recently been shown to fail in explaining lasing threshold trends in triangular lattice photonic crystal cavities as a function of cavity size, and the potential impact of fabrication disorder is not well understood. In this thesis, we develop a simple but powerful numerical scheme for modelling the quantum dot active layer used for lasing in these photonic crystal cavity structures, as an ensemble of randomly posi- tioned artificial two-level atoms. Each two-level atom is defined by optical Bloch equations solved by a quantum master equation that includes phenomenological pure dephasing and an incoherent pump rate that effectively models a multi-level gain system. Light-matter in- teractions of both passive and lasing structures are analyzed using simulation defined tools and post-simulation Green function techniques. We implement an active layer ensemble of up to 24,000 statistically unique quantum dots in photonic crystal cavity simulations, using a self-consistent finite-difference time-domain method. This method has the distinct advantage of capturing effects such as dipole-dipole coupling and radiative decay, without the need for any phenomenological terms, since the time-domain solution self-consistently captures these effects. Our analysis demonstrates a powerful ability to connect with recent experimental trends, while remaining completely general in its set-up; for example, we do not invoke common approximations such as the rotating-wave or slowly-varying envelope approximations, and solve dynamics with zero a priori knowledge.

Oxynitrides decorated 316L SS for potential bioimplant application

NASA Astrophysics Data System (ADS)

Saravanan Kaliaraj, Gobi; Kumar, N.

2018-03-01

Titanium oxynitride (TiON) and zirconium oxynitride (ZrON) were deposited onto 316L stainless steel (316L SS) using reactive magnetron sputtering technique. The monoclinic and cubic phase of TiON and ZrON were obtained by x-ray diffraction (XRD). Nanoindentation and wear test analysis exhibited the better mechanical properties of TiON and ZrON films. Wettability studies showed hydrophilic nature on coated films; whereas bare 316L SS substrate was least hydrophilic. Drastic reduction of bacterial adhesion (Pseudomonas aeruginosa), as well as biofilm formation, was observed in both the films at different time duration. TiON and ZrON films were exhibited excellent hemocompatibility by preventing the platelet activation. Furthermore, the coated films exhibited corrosion protection in presence and absence of hydrogen peroxide (H2O2) in artificial blood plasma (ABP) solution.

Periodic oxidation for fabricating titanium oxynitride thin films via atomic layer deposition

DOE Office of Scientific and Technical Information (OSTI.GOV)

Iwashita, Shinya, E-mail: shinya.iwashita@tel.com; Aoyama, Shintaro; Nasu, Masayuki

2016-01-15

This paper demonstrates thermal atomic layer deposition (ALD) combined with periodic oxidation for synthesizing titanium oxynitride (TiON) thin films. The process used a typical ALD reactor for the synthesis of titanium nitride (TiN) films wherein oxygen was supplied periodically between the ALD-TiN cycles. The great advantage of the process proposed here was that it allowed the TiN films to be oxidized efficiently. Also, a uniform depth profile of the oxygen concentration in the films could be obtained by tuning the oxidation conditions, allowing the process to produce a wide variety of TiON films. The resistivity measurement is a convenient methodmore » to confirm the reproducibility of metal film fabrication but may not be applicable for TiON films depending upon the oxidation condition because the films can easily turn into insulators when subjected to periodic oxidation. Therefore, an alternative reproducibility confirmation method was required. In this study, spectroscopic ellipsometry was applied to monitor the variation of TiON films and was able to detect changes in film structures such as conductor–insulator transitions in the TiON films.« less

Proceedings of the Pacific Rim International Conference on Artificial Intelligence (11th) held in Daegu, Korea, August/September 2010. PRICAI 2010: Trends in Artificial Intelligence

DTIC Science & Technology

2010-09-01

propagate in the form of so-called " word -of- mouth " communica- tions. Thus, it is now understood that social networks provide rich sources of informa- tion...look at the underlying process of word -of- mouth . Marketing Letters 12, 211-223 (2001) 7. Kempe, D., Kleinberg, J., Tardos, E.: Maximizing the spread...Environment, Daegu Conven- tion & Visitors Bureau, and Korea Tourism Organization. Special thanks go to Min Su Lee (Seoul National University

16TH Annual Review of Progress in Applied Computational Electromagnetics at the Naval Postgraduate School Monterey, CA, March 20-24, 2000, Volume II

DTIC Science & Technology

2000-03-24

34, Proceedings of the 4th Int. Conf. on Computer-Aided Drafting, Design and Manufacturing Technology, Bejing , China , pp. 133-139, aug 1994. [4] C. J. Hsu...transmission and reflec- warped gyro-frequency. The prewarping opera - tion performance of a magnetized plasma slab tion conserves the d.c. gain and the...inverse NUDFT’s are obtained efficiently by the NUFFT algorithms with O(N log2 N) arithmetic opera - tions. Therefore the CG-NUFFT retains the

1979 Summer Study Program in Geophysical Fluid Dynamics at the Woods Hole Oceanographic Institution, Notes on Polar Oceanography. Volume II. Lectures of the Fellows.

DTIC Science & Technology

1979-11-01

the problem must be addressed in a different way if we want to find a A". -22- numerical solution. For that purpose let us note: VSt (44) = (47) s= (48...to move as a function of x,y,t. Additional assump- tions are: L< << &- << - E < 1 H - 2 <L1 where fl is the angular velocity of the tank, ur is the... angular velocity of the lid, and & and E are the Rossby and Ekman numbers respectively. • Viscosity was included in the upper layer because without it

A new method for qualitative simulation of water resources systems: 1. Theory

NASA Astrophysics Data System (ADS)

Camara, A. S.; Pinheiro, M.; Antunes, M. P.; Seixas, M. J.

1987-11-01

A new dynamic modeling methodology, SLIN (Simulação Linguistica), allowing for the analysis of systems defined by linguistic variables, is presented. SLIN applies a set of logical rules avoiding fuzzy theoretic concepts. To make the transition from qualitative to quantitative modes, logical rules are used as well. Extensions of the methodology to simulation-optimization applications and multiexpert system modeling are also discussed.

Comparison of vertical discretization techniques in finite-difference models of ground-water flow; example from a hypothetical New England setting

USGS Publications Warehouse

Harte, Philip T.

1994-01-01

Proper discretization of a ground-water-flow field is necessary for the accurate simulation of ground-water flow by models. Although discretiza- tion guidelines are available to ensure numerical stability, current guidelines arc flexible enough (particularly in vertical discretization) to allow for some ambiguity of model results. Testing of two common types of vertical-discretization schemes (horizontal and nonhorizontal-model-layer approach) were done to simulate sloping hydrogeologic units characteristic of New England. Differences of results of model simulations using these two approaches are small. Numerical errors associated with use of nonhorizontal model layers are small (4 percent). even though this discretization technique does not adhere to the strict formulation of the finite-difference method. It was concluded that vertical discretization by means of the nonhorizontal layer approach has advantages in representing the hydrogeologic units tested and in simplicity of model-data input. In addition, vertical distortion of model cells by this approach may improve the representation of shallow flow processes.

Responding to Environmental Challenges in Central Asia and the Caspian Basin

DTIC Science & Technology

2001-03-01

regional environment, political tension, economic destabilization and loss, to rendering large agricultural areas unsuitable for cultivation as...large-scale deforesta­ tion and inappropriate farm­ ing practices, particularly the cultivation of marginal lands without soil conserva­ tion measures

Improvements in Routing for Packet-Switched Networks

DTIC Science & Technology

1975-02-18

PROGRAM FOR COMPUTER SIMULATION . . 90 B.l Flow Diagram of Adaptive Routine 90 B.2 Progiam ARPSIM 93 B.3 Explanation of Variables...equa. 90 APPENDIX B ADAPTIVE ROUTING PROGRAM FOR COMPUTER SIMULA HON The computer simulation for adaptive routing was initially run on a DDP-24 small...TRANSMIT OVER AVAILABLE LINKS MESSAGES IN QUEUE COMPUTE Ni NUMBER OF ARRIVALS AT EACH NODE i AT TIME T Fig. Bla - Flow Diagram of Program Routine 92

A Primer for DoD Reliability, Maintainability, Safety, and Logistics Standards, 1992

DTIC Science & Technology

1991-10-01

equipment, identified in the order of application (i.e., assembly, unit and system screens). Screening Strength ( SS ) - The probability that a screen...As’- ss equipment suitability for its intended operational environment. c. Verify contractual compliance. Each test method is divided into two...SIMULA-ITno Q.A. j FABRICATION, VALIDATION AD CONCERNS j PACKAGE AND SAnSFACTORY MBI Y QUALIMCATION RE UIREMENTS NO QRA TESTS YES QMLFOR TECHNOLOGY

A new method for qualitative simulation of water resources systems: 2. Applications

NASA Astrophysics Data System (ADS)

Antunes, M. P.; Seixas, M. J.; Camara, A. S.; Pinheiro, M.

1987-11-01

SLIN (Simulação Linguistica) is a new method for qualitative dynamic simulation. As was presented previously (Camara et al., this issue), SLIN relies upon a categorical representation of variables which are manipulated by logical rules. Two applications to water resources systems are included to illustrate SLIN's potential usefulness: the environmental impact evaluation of a hydropower plant and the assessment of oil dispersion in the sea after a tanker wreck.

Optimal Control Strategies for Constrained Relative Orbits

DTIC Science & Technology

2007-09-01

the chief. The work assumes the Clohessy - Wiltshire closeness assump- tion between the deputy and chief is valid, however, elliptical chief orbits are...133 Appendix G. A Closed-Form Solution of the Linear Clohessy - Wiltshire Equa- tions...Counterspace . . . . . . . . . . . . . . . . . . . 1 CW Clohessy - Wiltshire . . . . . . . . . . . . . . . . . . . . . . 4 DARPA Defense Advanced Research

Icing Zones in a Warm Front System with General Precipitation

DTIC Science & Technology

1947-07-01

to the Bergeron- Findeisen theory of the forma- tion of precipitation; any large are& of cbntinuouti grecipita-. tion is characterized by the...Journal. of Xeteorology, vol. no. 3, September 194-6, pp. 57-77. 3,’ Findeisen , V. : Meteorologic.K&Physical Lfmitntions of Icing in the

Precessão do jato de 3C120: simulações hidrodinâmicas 3D

NASA Astrophysics Data System (ADS)

Caproni, A.; de Gouveia dal Pino, E. M.; Abraham, Z.; Raga, A. C.

2003-08-01

Observações com técnicas de interferometria com longa linha de base têm mostrado a existência de um jato relativístico com componentes superluminais na região central de 3C 120. Estas componentes são ejetadas em distintas direções no plano do céu e com diferentes velocidades aparentes. Estas características foram interpretadas em trabalhos anteriores como efeitos da precessão do jato relativístico. Neste trabalho, realizamos simulações tri-dimensionais do jato de 3C 120 utilizando os parâmetros de precessão determinados em trabalhos anteriores e variando as características iniciais do jato e meio ambiente, tais como densidade numérica e temperatura. Todas as simulações foram feitas com o código hidrodinâmico YGUAZÚ-A, assumindo-se um jato adiabático descrito por uma equação de estado relativística. Pelo fato de estarmos utilizando um código hidrodinâmico, nós assumimos que a intensidade do campo magnético e a distribuição de partículas, necessários para se calcular a emissão sincrotron, são proporcionais à pressão hidrodinâmica. Comparação entre dois cenários distintos, nos quais o material do jato é ejetado com velocidade constante (jato contínuo) e com velocidade modulada por um padrão sinusoidal no tempo (jato intermitente), é apresentada e discutida. Para jatos que apresentam fenômenos de precessão e intermitência, com amplitude de variação na velocidade de injeção maior que dez por cento da velocidade média de injeção, a hipótese balística, controlada pela intermitencia, é mais provável. Por outro lado, para jatos com precessão mas sem intermitência (ou com amplitude de variabilidade em velocidade mais baixa que no caso anterior), o efeito da precessão na morfologia do jato não é desprezível. Portanto, de um modo geral, ambos efeitos (precessão e movimentos balísticos) devem estar concorrendo para afetar a morfologia dos jatos superluminais.

Objects as closures: Abstract semantics of object oriented languages

NASA Technical Reports Server (NTRS)

Reddy, Uday S.

1989-01-01

We discuss denotational semantics of object-oriented languages, using the concept of closure widely used in (semi) functional programming to encapsulate side effects. It is shown that this denotational framework is adequate to explain classes, instantiation, and inheritance in the style of Simula as well as SMALLTALK-80. This framework is then compared with that of Kamin, in his recent denotational definition of SMALLTALK-80, and the implications of the differences between the two approaches are discussed.

Summary of Professional Activities, Center for Air Force C3 Systems

DTIC Science & Technology

1991-06-01

D080 Glatfelter, Glenn L., Graves, Ralph C., D090, Low Frequency Multipath Schuster, Marvin A., Levreault, Robert P ., Target Scattering Simula- DO80 D090...MITRE Berk, George, from this list. Employee, Chu, Alejandro, Friedman, Gerald M., Cronson, Harry M., Allen, David P ., D070 DeVincentis, John, Jacobi...1990. Weitzman, Peter S., Wrick, Varley L., D090 Allen, David P ., Atwood, John E., MMIC Technology Teig, Loden J., D080 Babbitt, Howard S., III

ONRASIA Scientific Information Bulletin, Volume 17, Number 2, April/June 1992

DTIC Science & Technology

1992-06-01

studying the role of overcomplete- Tel: +81-422-59-4201 seminar on wavelets was chosen to be ness properties and their applications Fax: +81-422-59-3393...technologies, explore interactive environment for man- to emulate various types of cache proto- applications, and study how theycan be machine interface...cols. The Keio professors specifically integrated. Flexible integration is seen want to study the kind of logic simula- as an important goal in order for

Projecting county pulpwood production with historical production and macro-economic variables

Treesearch

Consuelo Brandeis; Dayton M. Lambert

2014-01-01

We explored forecasting of county roundwood pulpwood produc-tion with county-vector autoregressive (CVAR) and spatial panelvector autoregressive (SPVAR) methods. The analysis used timberproducts output data for the state of Florida, together with a set ofmacro-economic variables. Overall, we found the SPVAR specifica-tion produced forecasts with lower error rates...

PROJECT SQUID. Field Survey Report. Volume 1, Part 3. Materials

DTIC Science & Technology

1947-06-30

are thought to deserve consideration as to rfrator meals iththoe otaie~l y tit~kl~~lj materials of construction ,titanium, tungsten, tanta- tion of...provide This is a time.consuming costly process with no guar - the n. (, .d data. antee of achieving optimum results. The determina- tion of the

40 CFR 227.27 - Limiting permissible con-cen-tra-tion (LPC).

Code of Federal Regulations, 2012 CFR

2012-07-01

... 40 Protection of Environment 26 2012-07-01 2011-07-01 true Limiting permissible con-cen-tra-tion... scientific literature or accepted by EPA as being reliable test organisms to determine the anticipated impact... for each type they represent, and that are documented in the scientific literature and accepted by EPA...

Haines Board: A Review of Army School System for Officer Education and Training. USAIS Position. Volume 1 and Factual Data. Volume 2

DTIC Science & Technology

1965-07-01

currently not suitable for general publica - tion, but which, because of their implication in the future, merit the atten- tion of senior Infantry...OC selection and evaluation, sug- gestions on departmental organization, evaluation of officer students, course prerequisites, attrition

Impact of flows on ion temperatures inferred from neutron spectra in asymmetrically driven OMEGA DT implosions

NASA Astrophysics Data System (ADS)

Gatu Johnson, M.; Frenje, J. A.; Seguin, F. H.; Petrasso, R. D.; Aappelbe, B.; Chittenden, J.; Walsh, C.; Knauer, J. P.; Glebov, V. Yu.; Forrest, C.; Marshall, F.; Michel, T.; Stoeckl, C.; Sangster, T. C.; Zylstra, A.

2016-10-01

Ion temperatures (Tion) in Inertial Confinement Fusion (ICF) experiments have traditionally been inferred from the broadening of primary neutron spectra. Directional motion (flow) of the fuel at burn, expected to arise due to asymmetries imposed by engineering features (such as stalks, fill tubes, tents, or capsule imperfections) or drive non-uniformity, also impacts broadening and may lead to artificially inflated ``Tion'' values. Flow due to low-mode asymmetries is expected to give rise to line-of-sight variations in measured Tion, as observed in OMEGA cryogenic DT implosions but not in similar experiments at the NIF. In this presentation we report on an OMEGA experiment with intentionally asymmetric drive, designed to test the ability to accurately predict and measure line-of-sight differences in apparent Tion due to low-mode asymmetry-seeded flows. The results provide insight into the complexity of hot-spot dynamics, which is a problem that must be mastered to achieve ICF ignition. This work was supported in part by LLE, the U.S. DoE (NNSA, NLUF) and LLNL.

Nanocapsules: The Weapons for Novel Drug Delivery Systems

PubMed Central

Kothamasu, Pavankumar; Kanumur, Hemanth; Ravur, Niranjan; Maddu, Chiranjeevi; Parasuramrajam, Radhika; Thangavel, Sivakumar

2012-01-01

Introduction Nanocapsules, existing in miniscule size, range from 10 nm to 1000 nm. They consist of a liquid/solid core in which the drug is placed into a cavity, which is surrounded by a distinctive polymer membrane made up of natural or synthetic polymers. They have attracted great interest, because of the protective coating, which are usually pyrophoric and easily oxidized and delay the release of active ingredients. Methods Various technical approaches are utilized for obtaining the nanocapsules; however, the methods of interfacial polymerization for monomer and the nano-deposition for preformed polymer are chiefly preferred. Most important characteristics in their preparation is particle size and size distribution which can be evaluated by using various techniques like X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolu¬tion transmission electron microscopy, X-ray photoelectron spectroscopy, superconducting quantum interference device, multi angle laser light scattering and other spectroscopic techniques. Results Nanocapsules possessing extremely high reproducibility have a broad range of life science applications. They may be applied in agrochemicals, genetic engineering, cosmetics, cleansing products, wastewater treatments, adhesive component applications, strategic delivery of the drug in tumors, nanocapsule bandages to fight infec¬tion, in radiotherapy and as liposomal nanocapsules in food science and agriculture. In addition, they can act as self-healing materials. Conclusion The enhanced delivery of bio¬active molecules through the targeted delivery by means of a nanocapsule opens numerous challenges and opportunities for the research and future development of novel improved therapies. PMID:23678444

Nanocapsules: the weapons for novel drug delivery systems.

PubMed

Kothamasu, Pavankumar; Kanumur, Hemanth; Ravur, Niranjan; Maddu, Chiranjeevi; Parasuramrajam, Radhika; Thangavel, Sivakumar

2012-01-01

Nanocapsules, existing in miniscule size, range from 10 nm to 1000 nm. They consist of a liquid/solid core in which the drug is placed into a cavity, which is surrounded by a distinctive polymer membrane made up of natural or synthetic polymers. They have attracted great interest, because of the protective coating, which are usually pyrophoric and easily oxidized and delay the release of active ingredients. Various technical approaches are utilized for obtaining the nanocapsules; however, the methods of interfacial polymerization for monomer and the nano-deposition for preformed polymer are chiefly preferred. Most important characteristics in their preparation is particle size and size distribution which can be evaluated by using various techniques like X-ray diffraction, scanning electron microscopy, transmission electron microscopy, high-resolu¬tion transmission electron microscopy, X-ray photoelectron spectroscopy, superconducting quantum interference device, multi angle laser light scattering and other spectroscopic techniques. Nanocapsules possessing extremely high reproducibility have a broad range of life science applications. They may be applied in agrochemicals, genetic engineering, cosmetics, cleansing products, wastewater treatments, adhesive component applications, strategic delivery of the drug in tumors, nanocapsule bandages to fight infec¬tion, in radiotherapy and as liposomal nanocapsules in food science and agriculture. In addition, they can act as self-healing materials. The enhanced delivery of bio¬active molecules through the targeted delivery by means of a nanocapsule opens numerous challenges and opportunities for the research and future development of novel improved therapies.

A spectral analysis of the domain decomposed Monte Carlo method for linear systems

DOE PAGES

Slattery, Stuart R.; Evans, Thomas M.; Wilson, Paul P. H.

2015-09-08

The domain decomposed behavior of the adjoint Neumann-Ulam Monte Carlo method for solving linear systems is analyzed using the spectral properties of the linear oper- ator. Relationships for the average length of the adjoint random walks, a measure of convergence speed and serial performance, are made with respect to the eigenvalues of the linear operator. In addition, relationships for the effective optical thickness of a domain in the decomposition are presented based on the spectral analysis and diffusion theory. Using the effective optical thickness, the Wigner rational approxi- mation and the mean chord approximation are applied to estimate the leakagemore » frac- tion of random walks from a domain in the decomposition as a measure of parallel performance and potential communication costs. The one-speed, two-dimensional neutron diffusion equation is used as a model problem in numerical experiments to test the models for symmetric operators with spectral qualities similar to light water reactor problems. We find, in general, the derived approximations show good agreement with random walk lengths and leakage fractions computed by the numerical experiments.« less

Objects as closures - Abstract semantics of object oriented languages

NASA Technical Reports Server (NTRS)

Reddy, Uday S.

1988-01-01

The denotational semantics of object-oriented languages is discussed using the concept of closure widely used in (semi) functional programming to encapsulate side effects. It is shown that this denotational framework is adequate to explain classes, instantiation, and inheritance in the style of Simula as well as SMALLTALK-80. This framework is then compared with that of Kamin (1988), in his recent denotational definition of SMALLTALK-80, and the implications of the differences between the two approaches are discussed.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Humble, Travis S; Sadlier, Ronald J

Quantum communication systems harness modern physics through state-of-the-art optical engineering to provide revolutionary capabilities. An important concern for quantum communication engineering is designing and prototyping these systems to prototype proposed capabilities. We apply the paradigm of software-defined communica- tion for engineering quantum communication systems to facilitate rapid prototyping and prototype comparisons. We detail how to decompose quantum communication terminals into functional layers defining hardware, software, and middleware concerns, and we describe how each layer behaves. Using the super-dense coding protocol as a test case, we describe implementations of both the transmitter and receiver, and we present results from numerical simulationsmore » of the behavior. We find that while the theoretical benefits of super dense coding are maintained, there is a classical overhead associated with the full implementation.« less

Acquisition Research Topics Catalog.

DTIC Science & Technology

1979-01-01

tion maintenance, and redistribution Control levels based on standard formu- and marketing ) impact the acquisi- las will also change quite rapidly...production processes, the necessary lead times could be updated for like items based upon current market experience. By Air Force Logistics Command (AFLC...seller prime contractors are subcontracting situations has led to a growing realiza- significant portions of the prime tion that market theory

Analysis of the neutron time-of-flight spectra from inertial confinement fusion experiments

NASA Astrophysics Data System (ADS)

Hatarik, R.; Sayre, D. B.; Caggiano, J. A.; Phillips, T.; Eckart, M. J.; Bond, E. J.; Cerjan, C.; Grim, G. P.; Hartouni, E. P.; Knauer, J. P.; Mcnaney, J. M.; Munro, D. H.

2015-11-01

Neutron time-of-flight diagnostics have long been used to characterize the neutron spectrum produced by inertial confinement fusion experiments. The primary diagnostic goals are to extract the d + t → n + α (DT) and d + d → n + 3He (DD) neutron yields and peak widths, and the amount DT scattering relative to its unscattered yield, also known as the down-scatter ratio (DSR). These quantities are used to infer yield weighted plasma conditions, such as ion temperature (Tion) and cold fuel areal density. We report on novel methodologies used to determine neutron yield, apparent Tion, and DSR. These methods invoke a single temperature, static fluid model to describe the neutron peaks from DD and DT reactions and a spline description of the DT spectrum to determine the DSR. Both measurements are performed using a forward modeling technique that includes corrections for line-of-sight attenuation and impulse response of the detection system. These methods produce typical uncertainties for DT Tion of 250 eV, 7% for DSR, and 9% for the DT neutron yield. For the DD values, the uncertainties are 290 eV for Tion and 10% for the neutron yield.

Impact of flows on ion temperatures inferred from neutron spectra in asymmetrically driven OMEGA DT implosions

NASA Astrophysics Data System (ADS)

Gatu Johnson, M.; Frenje, J.; Lahmann, B.; Seguin, F.; Petrasso, R.; Appelbe, B.; Chittenden, J.; Walsh, C.; Delettrez, J.; Igumenshchev, I.; Knauer, J. P.; Glebov, V. Yu.; Forrest, C.; Grimble, W.; Marshall, F.; Michel, T.; Stoeckl, C.; Haines, B. M.; Zylstra, A. B.

2017-10-01

Ion temperatures (Tion) in Inertial Confinement Fusion (ICF) experiments have traditionally been inferred from the broadening of primary neutron spectra. Directional motion (flow) of the fuel at burn, expected to arise due to asymmetries imposed by e.g. engineering features or drive non-uniformity, also impacts broadening and may lead to artificially inflated ``Tion'' values. Flow due to low-mode asymmetries is expected to give rise to line-of-sight variations in measured Tion, as observed in OMEGA cryogenic DT implosions but not in similar experiments at the NIF. In this presentation, we report on OMEGA experiments with intentional drive asymmetry designed for testing the ability to accurately predict and measure line-of-sight differences in apparent Tion due to low-mode asymmetry-seeded flows. The measurements are contrasted to CHIMERA, RAGE and ASTER simulations, providing insight into implosion dynamics and the relative importance of laser drive non-uniformity, stalk and offset as sources of asymmetry. The results highlight the complexity of hot-spot dynamics, which is a problem that must be mastered to achieve ICF ignition. This work was supported in part by the U.S. DOE, NLUF and LLE.

JPRS Report, East Europe.

DTIC Science & Technology

1990-05-14

Composition of Small Entrepreneurs Analyzed [HETI VILAGGAZDASAG 31 Mar] ........... 34 ROMANIA Marginalization of Youth in ’Society of Adults ...Organiza- in that. The organizers did skip the end of the presenta- tion Which Does Not Incite Moods "] tion. Now the real Marosvasarhely pictures followed...days, incite moods , and therefore it would not be advisable to otherwise they would have known that it was impossible ask further questions, or at least

Russian Military Politics and Russia’s 2010 Defense Doctrine

DTIC Science & Technology

2011-03-01

Institute (SSI) publica- tions enjoy full academic freedom, provided they do not disclose classified information, jeopardize operations security , or... attack as well, under certain, not specified, critical circum- stances for national security . This attitude was not un- expected, since the on-going... attacks in the United States—needed revision because of the deterioration of the international security situa- tion since then. Subsequently, in March

Annual Report Number 13.

DTIC Science & Technology

1981-12-01

Sauberer (1950) and adapting a representative phase function from the results of our scattering experiments. The scattering efficiency was treated as an...tion coefficients of Sauberer . A paper describing the analysis in detail has been accepted for publication by the Journal of Glaciology. Although the...those reported by Sauberer . However, because the absorp- tion is so small at visible wavelengths and because Sauberer had available rather thin ice

First Results From the Spatial Heterodyne Imager for Mesospheric Radicals (SHIMMER): Diurnal Variation of Mesospheric Hydroxyl

DTIC Science & Technology

2008-10-08

L01808, doi:10.1029/ 2005GL024048. Pickett, H. M., W. G. Read, K. K. Lee , and Y. L. Yung (2006b), Observa- tion of night OH in the mesosphere, Geophys. Res...Offermann, M. Riese, P. Preusse, D. F. Strobel , and J. M. Russell III (1997), Implica- tions of satellite OH observations for middle atmospheric H2O

National Strategy for Homeland Security

DTIC Science & Technology

2007-10-01

biometrics, including in passports and visas, has made it increasingly diffi- cult to counterfeit travel docu- ments, and we must encourage those... counterfeiting , altera- tion, and misuse of identifica- tion and travel documents, and to report lost and stolen passports in a timely manner. These efforts...in medicine , agriculture, and industry. We will stringently enforce our export control laws as a means of denying rogue actors – including

Excrétion rénale des ions divalents après homotransplantation rénale

PubMed Central

Cartier, F.; Popovtzer, M. M.; Robinette, J.; Pinggera, W. F.; Halgrimson, C. G.; Starzl, T. E.

2010-01-01

RÉSUMÉ L’élimination rénale des ions divalents, celle du Na et du K, ont été étudiées de façon comparative dans les suites immédiates de l’homotransplantation rénale chez 6 patients. Durant la période initiale polyurique (> 3ml/mn), le taux d’excrétion du Ca filtré (Cca/Ccr), du Mg, du P, du Na et du K, est élevé et il existe une corrélation étroite et quasi constante entre l’élimination du Ca, du Mg et du Na ; la corrélation n’est pas constante entre l’élimination du Na et du K, du Mg et du K. Pendant les deux jours suivants, le taux d’excrétion diminue, sauf pour le P ; il existe encore une corrélation entre l’excrétion du Ca, du Mg et du Na, non entre celle du Na et du K, du Mg et du K. L’excrétion du Ca l’emporte sur celle du Na au cours de la première période, non au cours de la seconde. A la lumière de ces données, on envisage l’intervention possible de divers facteurs, tels l’inflation hydrosique et l’hyperazotémie préalables, l’ischémie rénale contemporaine de la transplantation, les effets de la dénervation rénale, du traitement cortisonique, de l’hyperparathyroïdie et ceux des modifications circulatoires rénales. PMID:4574592

Two-dimensional Coupled Petrological-tectonic Modelling of Extensional Basins

NASA Astrophysics Data System (ADS)

Kaus, B. J. P.; Podladchikov, Y. Y.; Connolly, J. A. D.

Most numerical codes that simulate the deformation of a lithosphere assume the den- sity of the lithosphere to be either constant or depend only on temperature and pres- sure. It is, however, well known that rocks undergo phase transformations in response to changes in pressure and temperature. Such phase transformations may substantially alter the bulk properties of the rock (i.e., density, thermal conductivity, thermal ex- pansivity and elastic moduli). Several previous studies demonstrated that the density effects due to phase transitions are indeed large enough to have an impact on the litho- sphere dynamics. These studies were however oversimplified in that they accounted for only one or two schematic discontinuous phase transitions. The current study there- fore takes into account all the reactions that occur for a realistic lithospheric composi- tion. Calculation of the phase diagram and bulk physical properties of the stable phase assemblages for the crust and mantle within the continental lithosphere was done ac- counting for mineral solution behaviour using a free energy minimization program for natural rock compositions. The results of these calculations provide maps of the varia- tions in rock properties as a function of pressure and temperature that are easily incor- porated in any dynamic model computations. In this contribution we implemented a density map in the two-dimensional basin code TECMOD2D. We compare the results of the model with metamorphic reactions with a model without reactions and define some effective parameters that allow the use of a simpler model that still mimics most of the density effects of the metamorphic reactions.

Computer and laboratory simulation in the teaching of neonatal nursing: innovation and impact on learning.

PubMed

Fonseca, Luciana Mara Monti; Aredes, Natália Del' Angelo; Fernandes, Ananda Maria; Batalha, Luís Manuel da Cunha; Apóstolo, Jorge Manuel Amado; Martins, José Carlos Amado; Rodrigues, Manuel Alves

2016-10-10

to evaluate the cognitive learning of nursing students in neonatal clinical evaluation from a blended course with the use of computer and laboratory simulation; to compare the cognitive learning of students in a control and experimental group testing the laboratory simulation; and to assess the extracurricular blended course offered on the clinical assessment of preterm infants, according to the students. a quasi-experimental study with 14 Portuguese students, containing pretest, midterm test and post-test. The technologies offered in the course were serious game e-Baby, instructional software of semiology and semiotechnique, and laboratory simulation. Data collection tools developed for this study were used for the course evaluation and characterization of the students. Nonparametric statistics were used: Mann-Whitney and Wilcoxon. the use of validated digital technologies and laboratory simulation demonstrated a statistically significant difference (p = 0.001) in the learning of the participants. The course was evaluated as very satisfactory for them. The laboratory simulation alone did not represent a significant difference in the learning. the cognitive learning of participants increased significantly. The use of technology can be partly responsible for the course success, showing it to be an important teaching tool for innovation and motivation of learning in healthcare. avaliar a aprendizagem cognitiva de estudantes de enfermagem na avaliação clínica neonatal a partir de um curso semipresencial com uso de simulação por computador e em laboratório; comparar a aprendizagem cognitiva dos estudantes em grupo controle e experimental ao testar a simulação em laboratório; e avaliar o curso semipresencial extracurricular oferecido sobre avaliação clínica do bebê pré-termo, segundo os estudantes. estudo quase-experimental com 14 estudantes portugueses contendo pré-teste, teste intermediário e pós-teste. As tecnologias oferecidas no curso foram serious game e-Baby, software instrucional de semiologia e semiotécnica e simulação em laboratório. Para a avaliação do curso e caracterização dos estudantes utilizou-se instrumentos de coleta de dados desenvolvidos para este estudo. Utilizou-se estatística não paramétrica: Mann-Whitney e Wilcoxon. O uso de tecnologias digitais validadas e de simulação em laboratório evidenciou diferença estatisticamente significativa (p=0,001) na aprendizagem dos participantes. O curso foi avaliado como muito satisfatório pelos mesmos. A simulação em laboratório isoladamente não representou diferença significativa no aprendizado. a aprendizagem cognitiva dos participantes aumentou significativamente. Considera-se que o uso de tecnologia foi responsável por parte do sucesso do curso, denotando ser uma importante ferramenta de inovação didática e motivação da aprendizagem na área da saúde. evaluar el aprendizaje cognitivo de estudiantes de enfermería en evaluación clínica neonatal, a partir de un curso semipresencial, utilizando simulación por computador y en laboratorio; comparar el aprendizaje cognitivo de los estudiantes, entre grupo control y experimental, comprobando la simulación en el laboratorio; y evaluar el curso semipresencial extracurricular ofrecido sobre evaluación clínica del bebé pretérmino, de acuerdo a los estudiantes. estudio casi experimental con 14 estudiantes portugueses, conteniendo preprueba, prueba intermedia y postprueba. Las tecnologías ofrecidas en el curso fueron serious game e-Baby, programa de instrucción en semiología y semiotecnia, y simulación en laboratorio. Para la evaluación del curso y caracterización de los estudiantes se utilizaron instrumentos de recolección de datos desarrollados para este estudio. Se utilizó la estadística no-paramétrica de Mann-Whitney y Wilcoxon. el uso de tecnologías digitales validadas y de simulación en laboratorio evidenció diferencia estadísticamente significativa (p=0,001) en el aprendizaje de los participantes. El curso fue evaluado como muy satisfactorio por los alumnos. La simulación en laboratorio, aisladamente, no presentó diferencia significativa en el aprendizaje. el aprendizaje cognitivo de los participantes aumentó significativamente. Se considera que el uso de la tecnología fue responsable por parte del éxito del curso, demostrando ser una importante herramienta de innovación didáctica y motivación del aprendizaje en el área de la salud.

European Science Notes. Volume 39, Number 8.

DTIC Science & Technology

1985-08-01

electrophysiological 370 -- , * * ESN 39-8 (1985) slower increment of the speed to the end mus which occurs immediately after the phase . The initial jump is... curve and that removal appears to simple constructions, ease of modula- correspond more closely with the melt tion, and efficient discharge excita- phase ...separate experimental condi- (uncued condition). On some trials the tions. Figure 2 shows the curves for light actually appeared in a location the four

European Immunology Congress (7th), Jerusalem, Israel.

DTIC Science & Technology

1985-11-22

Zan-Bar, Israel. glycoprotein hormone which plays a key tivity, and the authors postulated that immunoregulatory role by inducing ac- IL-2 may have a...the expres- tion relationship of this important im- sion of 33B31 receptors, slows down the . munoregulatory hormone . turnover of these receptors once...Israel) have been studying the stimula- stimulation with monoclonal anti-idio- tion of growth by an FCy receptor ex- typic antibodies against

Titanium Combustion in Turbine Engines

DTIC Science & Technology

1979-07-01

metal fires . Due to the refractory nature of metal oxides, mcst of the heat of reac- tion will reside in the enthalpy of the products. In a surface...more closely approx- imates the conditions prevailing in large-scale accidental metal fires . The objectives of this research have been to better define...conditions on the propagating molten mass of burning metal. Metal fires involve propagating combus- tion, and the propagation of burning-must be

Strength of Screw Propellers

DTIC Science & Technology

1975-07-07

development depends not, only on the ability of the material to resist hydraulic impacts in cavitation, but also on the correct design of the propeller. Study...9) z where k - correction of Goldstein-Prandtl, which takes into considera- tion the effect of the finite number of propeller blades on the amount... correction of Goldztcin-Prwxidtl is deteri~inedi by graphs in Fig. 10. An example of the calculation of hydrodynamic forces distribu- tion along a

Hydrogeologic Effects of In-Situ Groundwater Treatment Using Biodegradation

DTIC Science & Technology

1987-06-15

development of groundwater divides, 2 * removal of contaminated water through pumping foillowed by above ground treatment, Excavating the contaminant source... water infiltration. During in-situ bioreclama- tion the pol:uted extracted groundwater is often treated, and after addition of nutrients and oxygen...1982, "Degrada- tion of phenolic contaminants in groundwater by aerobic bacteria: St. Louis Park, Minnesota", Ground Water , Vol.20, No.6, pp.703-710

Specifying Software Behavior for Requirements and Design

DTIC Science & Technology

2013-01-01

e.g., Behavior Hiding is comprised of the Function Driver and Shared Services modules. Blacked-out modules, which are concerned with mechanisms for...and Shared Services modules. “The Func- tion Driver Module consists of a set of modules called Func- tion Drivers; each Function Driver is the sole...system environment. Functions that capture the rules determining these output values specify that behavior. The Shared Services module concerns aspects of

Cloud Computing at the Tactical Edge

DTIC Science & Technology

2012-10-01

Cloud Computing (CloudCom ’09). Bejing , China , December 2009. Springer-Verlag, 2009. [Marinelli 2009] Marinelli, E. Hyrax: Cloud Computing on Mobile...offloading is appropriate. Each applica- tion overlay is generated from the same Base VM Image that resides in the cloudlet. In an opera - tional setting...overlay, the following opera - tions execute: 1. The overlay is decompressed using the tools listed in Section 4.2. 2. VM synthesis is performed through

Learning by Doing: The PLA Trains at Home and Abroad

DTIC Science & Technology

2012-11-01

Government . Authors of Strategic Studies Institute (SSI) publica- tions enjoy full academic freedom, provided they do not disclose classified information...the U.S. Government . EXECUTIVE SUMMARY This chapter examines Chinese naval moderniza- tion demonstrated during a decade of training ashore and...Ukraine, Greece, Portugal, Brazil, Ecuador , and Peru: Luhu class (旅沪级) DDG Qingdao (青岛舰), replenishment ship Taicang (太仓舰 around the world deployment

Correlation Between Capnography and Arterial Carbon Dioxide Before, During, and After Severe Chest Injury in Swine

DTIC Science & Technology

2012-01-01

In addi- tion to securing a patent airway, first responders must attempt to achieve adequate ventilation, as hyperventilation or hypo- ventilation... hyperventilated or hypoventi- lated (n = 890 intubated and n = 2,709 nonintubated) before hospital arrival. Adverse effects of ventilation are especially...perfusion, whereas hypoventila- tion causes decreased oxygen delivery (3, 4). Additional risks associated with hyperventilation include overinflation of

INVESTIGATION OF DENSITY EFFECT IN SOLIDS AND GASES.

DTIC Science & Technology

electron-positron pair production by 150 MeV electrons. (5) Investiga tion of the density effect in C, Al, Fe, Cu, Ni, Ag, Ta, and Au. (Author)...This report describes the results obtained for the following experiments: (1) The pressure dependence of ionization by relativistic elec trons. (2...Ionization by relativistic particles in helium-hydrogen gas mixtures. (3) Investiga tion of the operation of secondary emission monitors. (4) Direct

Technician Hiring in the Air National Guard: A Timeline Study

DTIC Science & Technology

2017-06-01

Research Report revealed Tech- nician employees have “lower rates of satisfaction” when compared against Active Guard and Reserve (AGRs) and...tion Research : Phase Two – Quantitative Research Report,” 30 March 2016, 60. 6. Report of Portland Marketing Analytics, L.L.C., “Air National...Guard 2015 Member Reten- tion Research : Phase Two – Quantitative Research Report,” 30 March 2016, 64. 7. General Colin Powell, The Essence of

Air Break During Preoxygenation and Risk of Altitude Decompression Sickness

DTIC Science & Technology

2010-10-01

examination and were representative of the USAF rated aircrew popula- tion. They were not allowed to participate in scuba div- ing, hyperbaric exposures, or...subjects dur- ing the hypobaric exposures and the subjects were not questioned about how they felt during the altitude ex- posures. Each subject was...to consult with the physicians in Hyperbaric Medicine within the same building. Endpoints of the exposures were: 1) comple- tion of the scheduled

Applying a Service-Oriented Architecture to Operational Flight Program Development

DTIC Science & Technology

2007-09-01

using two Java 2 Enterprise Edition (J2EE) Web servers. The weapon models were accessed using a SUN Microsystems Java Web Services Development Pack...Oriented Architectures 22 CROSSTALK The Journal of Defense Software Engineering September 2007 tion, and Spring/ Hibernate to provide the data access...tion since a major coding effort was avoided. The majority of the effort was tweaking pre-existing Java source code and editing of eXtensible Markup

JPRS Report, Soviet Union, Military Affairs

DTIC Science & Technology

1988-09-09

himself. Only don’t sin against the truth. And Aleksey Ivanovich is sometimes at variance with it. "I traversed the path from an ordinary pilot to com... preschool institu- tions. Not everywhere are exhaustive measures being taken to set up in jobs effectively soldiers discharged into the reserves...limita- tions and in their competence able to work fruitfully in central and international organs and protect the interests of the whole Soviet people

Military Petroleum Pipeline Systems

DTIC Science & Technology

1978-06-01

miodes of trunsportu-"tion conforming to tile cross-section for International Orounizations for Standardizu-tion ( ISO ) und American National Standards...along the I 00-ni lie length of’ thle pipleline., Facli pumlp stat ion wouli operate at a inuxu~inai discharge pressuro of’ ISO lb/in2 delivering...difficult, it would be possible to install 4-Inch, ISO - and 300-pound-class valves and 6-Inch, 150-pound-class valves without tile aid of materials handling

Innovative Surveillance and Risk Reduction Systems for Family Maltreatment, Suicidality, and Substance Problems in USAF

DTIC Science & Technology

2005-03-01

prevention, spouse 13 abuse, child abuse , suicide, alcohol, drug abuse 16. PRICE CODE 17. SECURITY CLASSIFICA TION 18. SECURITY CLASSIFICA TION 19...cohesion 9 Triple P Command) • Spouse emotional 0 Depressive 9 Common Sense Parenting abuse symptomatology * Child abuse & neglect e Relationship...and secretive problems Partner Physical Prescr. Illicit Child Abuse Abuse Partner Emo. Abuse Alcohol Drug Drug Suicid- c3-to- Problems Misuse Use ality

On-Line Point Positioning with Single Frame Camera Data

DTIC Science & Technology

1992-03-15

tion algorithms and methods will be found in robotics and industrial quality control. 1. Project data The project has been defined as "On-line point...development and use of the OLT algorithms and meth- ods for applications in robotics , industrial quality control and autonomous vehicle naviga- tion...Of particular interest in robotics and autonomous vehicle navigation is, for example, the task of determining the position and orientation of a mobile

Cost/Benefit Analysis of the Heat Recovery Incinerator (HRI).

DTIC Science & Technology

1985-09-01

management opportunities such as the use of nearby resource recovery facilities that have been f’manced I mm~ and erected by private operators or civic...Engineering Command policy regarding HRI construc- ftpy tion at Navy activities is to seek alternative waste management opportunities such as the use ...Command policy regarding HRI construc- tion at Navy activities is to seek alternative waste management opportunities such as the use of nearby resource

Intelligent Agents as a Basis for Natural Language Interfaces

DTIC Science & Technology

1988-01-01

language analysis component of UC, which produces a semantic representa tion of the input. This representation is in the form of a KODIAK network (see...Appendix A). Next, UC’s Concretion Mechanism performs concretion inferences ([Wilensky, 1983] and [Norvig, 1983]) based on the semantic network...The first step in UC’s processing is done by UC’s parser/understander component which produces a KODIAK semantic network representa tion of

ATF4, A Novel Mediator of the Anabolic Actions of PTH on Bone

DTIC Science & Technology

2011-07-01

Accumulating evidence estab- lishes that ubiquitin-proteasome pathways control osteoblast differentiation and bone forma - tion. For example, the proteasome...tide ligase, accelerated Runx2 ubiquitin-proteasomal degrada- tion and inhibited osteoblast differentiation and bone forma - FIGURE 5. TFIIA activates...36. Zhao, C., Irie , N., Takada, Y., Shimoda, K., Miyamoto, T., Nishiwaki, T., Suda, T., and Matsuo, K. (2006) Cell Metab. 4, 111–121 37. Geoffroy, V

ATF4, A Novel Mediator of the Anabolic Actions of PTH on Bone

DTIC Science & Technology

2008-07-01

lishes that ubiquitin-proteasome pathways control osteoblast differentiation and bone forma - tion. For example, the proteasome inhibitors epoxomicin...Runx2 ubiquitin-proteasomal degrada- tion and inhibited osteoblast differentiation and bone forma - FIGURE 5. TFIIA activates endogenous Ocn gene...2565 35. Duvall, J. F., Kashanchi, F., Cvekl, A., Radonovich, M. F., Piras, G., and Brady, J. N. (1995) J. Virol. 69, 5077–5086 36. Zhao, C., Irie , N

JPRS Report, West Europe.

DTIC Science & Technology

1988-02-17

ECONOMIA , advanced the following ambitious proposals: develop a programatic policy that unifies the various souls of the party and of the movement that is... es , Occhetto’s turning point has not convinced everyone. In the debate that the Central Committee engaged in on Thursday the 26th, Friday the 27th...wage increases? Isn’t it more a ques - tion of the struggle to preserve or change relative posi- tions? In that case the political Christmas gifts

Magnetic Resonance Spectroscopy; An Objective Modality to Identify the Pathology of Breast Neoplasms

DTIC Science & Technology

2000-05-01

van Rooy H, Collard JG, Bruyneel EA, Mareel MMK (1986): Effect of cancer related and drug induced alterations in surface carbohydrates on the...R (1983): Interferon induced increase in neuraminidase-releasable sialic acid and glycosphingolipid metabolism in mouse lymphoma and L1210 leukemic...tified at excision. Tissue from the aspira- 900 pulse, 8,192 data points, 256 free induc - tion site (3 mm 3) was collected for tion decays, an

Hazardous Waste Minimization Guide for Shipyards

DTIC Science & Technology

1994-01-01

any waste generation associated with spent sol- vent. Elimination can be achieved by utiliza- tion of non-solvent cleaning agents or elimi- nating the...alkali, citric, and caustic base, are often useful substitutes for solvents. There are many for- mulations that are suited for a variety of clean- ing...agents, such as caustic soda (NaOH), are often employed in place of meth- ylene chloride based strippers. Caustic solu- tions have the advantage of

A Mobile App for Military Operational Entomology Pesticide Applications

DTIC Science & Technology

2014-09-01

combinations of equipment, formula - tions, and techniques for aerosol and residual pesticide treatments in 6 ecological regions against a range of mosquito, sand...materiel from the military inventory or commercial off-the-shelf products and precision use of equipment and formula - tions that maximize efficacy and... Veterinary Entomology, 1600 SW 23rd Drive, Gaines- ville, FL 32608. 2 Navy Entomology Center of Excellence, Naval Air Station, PO Box 43, Jacksonville, FL

JPRS Report, East Asia. Korea: KULLOJA, No. 2, February 1987.

DTIC Science & Technology

1987-12-03

leadership role is enhanced, it is impossible to victoriously advance the revolution and construction, nor is it possible to properly manage social- ist...are the masters of produc- tion and management and economic factors that remodel nature and forge ahead with economic construc- tion. The...and communist eco- nomic construction, the popular masses’ desire and will be thoroughly realized, and the economy be managed and run in a correct

A statistical study of gyro-averaging effects in a reduced model of drift-wave transport

DOE Office of Scientific and Technical Information (OSTI.GOV)

Fonseca, Julio; Del-Castillo-Negrete, Diego B.; Sokolov, Igor M.

2016-08-25

Here, a statistical study of finite Larmor radius (FLR) effects on transport driven by electrostatic driftwaves is presented. The study is based on a reduced discrete Hamiltonian dynamical system known as the gyro-averaged standard map (GSM). In this system, FLR effects are incorporated through the gyro-averaging of a simplified weak-turbulence model of electrostatic fluctuations. Formally, the GSM is a modified version of the standard map in which the perturbation amplitude, K 0, becomes K 0J 0(more » $$\\hat{p}$$), where J 0 is the zeroth-order Bessel function and $$\\hat{p}$$ s the Larmor radius. Assuming a Maxwellian probability density function (pdf) for $$\\hat{p}$$ , we compute analytically and numerically the pdf and the cumulative distribution function of the effective drift-wave perturba- tion amplitude K 0J 0($$\\hat{p}$$). Using these results, we compute the probability of loss of confinement (i.e., global chaos), P c provides an upper bound for the escape rate, and that P t rovides a good estimate of the particle trapping rate. Lastly. the analytical results are compared with direct numerical Monte-Carlo simulations of particle transport.« less

The Antiaircraft Journal. Volume 94, Number 2, March-April 1951

DTIC Science & Technology

1951-04-01

are covered in detail. Included under a miscellaneous heading are such topics as the Geneva Conven- tion and extracts from the .United Na- tions Charter...serve as a review for many of the principles associated with guided missiles. They originally were presented in the May 1950 issue of Oil -Power...published by Socony-Vacuum Oil Company, Inc. Hats off to H. G. Wells and Jules Verne! As juvenile readers, most of us thrilled to their seemingly fantastic

Porous Electrode Studies.

DTIC Science & Technology

1980-07-01

the reac- tion modes of the Ag/AgCl, AgO/Ag 2O/Ag, and Zn/ ZnO electrodes and to testing various theories that predict electrode behavior. v LOCKHEED...of sudden passivation was related to a simul- taneous precipitation of flocculent ZnO , and this passivation was removed by addi- tion of fresh...vation occurred more slowly by covering with a thin, adherent film, and that a dis- solution, diffusion, deposition mode prevailed in the formation of ZnO

Low-Temperature Effects on Systems for Composting of Explosives-Contaminated Soils. Part 1. Literature Review

DTIC Science & Technology

1989-12-01

microbial transforma- aerobic metabolism are microbial biov,.ass, carbon tion of compounds ( Atlas and Bartha 1987). Fre- dioxide, water and heat. Conr...41:1040- land, Ohio: CRC Press, vol. II, p 84. 1044. Cathcart, T.P., F.W. Wheaton, R.B. Brinsfield Atlas , R. M. and R. Bartha (1987) Microbial ...odor-free, and gradation under favorable environmental condi- environmentally sound (Finstein et al. 1986b, Ep- tions ( Atlas and Bartha 1987). Moreover

The Plants of Kaho’olawe

DTIC Science & Technology

1994-05-01

agriculture, and severe overgrazing, leaving the island almost barren of vegeta- tion. With the entry of the United States into World War II...Army Construction Engi- neering Research Laboratories (USACERL) worked with the U.S. Navy to develop a cost- effective land rehabilita- tion...O7O4-O1U)f Wa i wk DC 20005. 1. AGENCY USE ONLY ( Leave BeIN) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED May 1994 Final 4. TITLE AND SUBTITLE 5

Remedial Investigation of Contaminant Mobility at Naval Weapons Station, Concord, California.

DTIC Science & Technology

1986-01-01

about benthic invertebrates and zooplankton pre- sented in Section 3.5.9.3 was obtained from a much more dispersed and incom- plete literature, which is...Encyclopedia of Marine Invertebrates , T. F. H. Publica- tions Inc., Ltd. White, H. H. 1979. "Effects of Dinoflagellate Bioluminescence on the Inges- tion Rates...Biologist, for the evaluation of wetland functional values; Dr. J. D. Lunz, Research Marine Biologist, Dr. D. R. Kendall, Aquatic Biologist, and Dr. T. J

ONR (Office of Naval Research) Far East Scientific Information Bulletin. Volume 14, Number 2, April-June 1989

DTIC Science & Technology

1989-06-01

tions on either side of the stoichiometric 4V) have been aluminized by using a pack composition. Four factors are considered cementation process. Cyclic...However, in this new applica- tion GPCF is expanding into fiber- (1) Improving CF strength by designing reinforced cements and concretes. Carbon new...called hybrid composite. portland cement matrix. CF provides: (2) Enhancing the energy-absorbing • Chemical inertness to acid and alkali mechanism of

Public Involvement in the Corps of Engineers Planning Process

DTIC Science & Technology

1975-10-01

words, public involvement should be planned for on a stagc-by- » ugc basis rather than looking at it in relation to the study as a whole. Moreover...conferences. * news releases. * mailings to people in the study area on the district’s mailing list, display advertisements in area newspapers...tion do not, as a rule, attract the kind of atten- tion that is needed. Paid advertisements in news sections of newspapers attract much more atten

Engineering Design Handbook. Development Guide for Reliability. Part Two. Design for Reliability

DTIC Science & Technology

1976-01-01

Component failure rates, however, have been recorded by many sources as a function of use and environment. Some of these sources are listed in Refs. 13-17...other systems capable of creating an explosive reac- tion. The second category is fairly obvious and includes many variations on methods for providing...aboutthem. 4. Ability to detect signals ( including patterns) in high noise environments. 5. Ability to store large amounts of informa- tion for long

Inverted bulk-heterojunction organic solar cells with the transfer-printed anodes and low-temperature-processed ultrathin buffer layers

NASA Astrophysics Data System (ADS)

Itoh, Eiji; Sakai, Shota; Fukuda, Katsutoshi

2018-03-01

We studied the effects of a hole buffer layer [molybdenum oxide (MoO3) and natural copper oxide layer] and a low-temperature-processed electron buffer layer on the performance of inverted bulk-heterojunction organic solar cells in a device consisting of indium-tin oxide (ITO)/poly(ethylene imine) (PEI)/titanium oxide nanosheet (TiO-NS)/poly(3-hexylthiopnehe) (P3HT):phenyl-C61-butyric acid methylester (PCBM)/oxide/anode (Ag or Cu). The insertion of ultrathin TiO-NS (˜1 nm) and oxide hole buffer layers improved the open circuit voltage V OC, fill factor, and rectification properties owing to the effective hole blocking and electron transport properties of ultrathin TiO-NS, and to the enhanced work function difference between TiO-NS and the oxide hole buffer layer. The insertion of the TiO-NS contributed to the reduction in the potential barrier at the ITO/PEI/TiO-NS/active layer interface for electrons, and the insertion of the oxide hole buffer layer contributed to the reduction in the potential barrier for holes. The marked increase in the capacitance under positive biasing in the capacitance-voltage characteristics revealed that the combination of TiO-NS and MoO3 buffer layers contributes to the selective transport of electrons and holes, and blocks counter carriers at the active layer/oxide interface. The natural oxide layer of the copper electrode also acts as a hole buffer layer owing to the increase in the work function of the Cu surface in the inverted cells. The performance of the cell with evaporated MoO3 and Cu layers that were transfer-printed to the active layer was almost comparable to that of the cell with MoO3 and Ag layers directly evaporated onto the active layer. We also demonstrated comparable device performance in the cell with all-printed MoO3 and low-temperature-processed silver nanoparticles as an anode.

Final Report: Large-Scale Optimization for Bayesian Inference in Complex Systems

DOE Office of Scientific and Technical Information (OSTI.GOV)

Ghattas, Omar

2013-10-15

The SAGUARO (Scalable Algorithms for Groundwater Uncertainty Analysis and Robust Optimiza- tion) Project focuses on the development of scalable numerical algorithms for large-scale Bayesian inversion in complex systems that capitalize on advances in large-scale simulation-based optimiza- tion and inversion methods. Our research is directed in three complementary areas: efficient approximations of the Hessian operator, reductions in complexity of forward simulations via stochastic spectral approximations and model reduction, and employing large-scale optimization concepts to accelerate sampling. Our efforts are integrated in the context of a challenging testbed problem that considers subsurface reacting flow and transport. The MIT component of the SAGUAROmore » Project addresses the intractability of conventional sampling methods for large-scale statistical inverse problems by devising reduced-order models that are faithful to the full-order model over a wide range of parameter values; sampling then employs the reduced model rather than the full model, resulting in very large computational savings. Results indicate little effect on the computed posterior distribution. On the other hand, in the Texas-Georgia Tech component of the project, we retain the full-order model, but exploit inverse problem structure (adjoint-based gradients and partial Hessian information of the parameter-to- observation map) to implicitly extract lower dimensional information on the posterior distribution; this greatly speeds up sampling methods, so that fewer sampling points are needed. We can think of these two approaches as "reduce then sample" and "sample then reduce." In fact, these two approaches are complementary, and can be used in conjunction with each other. Moreover, they both exploit deterministic inverse problem structure, in the form of adjoint-based gradient and Hessian information of the underlying parameter-to-observation map, to achieve their speedups.« less

Re-suspension Process In Turbulent Particle-fluid Mixture Boundary Layers

NASA Astrophysics Data System (ADS)

Zwinger, T.; Kluwick, A.

Many theoretical applications of geophysical flows, such as sediment transport (e.g. Jenkins &Hanes, 1998) and aeolian transport of particles (e.g. Hopwood et al., 1995) utilize concepts for describing the near wall velocity profiles of particle suspensions originally arising from classical single phase theories. This approach is supported by experiments indicating the existence of a logarithmic fluid velocity profile similar to single phase flows also in case of high Reynolds number wall bounded particle sus- pension flows with low particle volume fractions (Nishimura &Hunt, 2000). Since the concept of a logarithmic near wall profile follows from classic asymptotic the- ory of high Reynolds number wall bounded flows the question arises to what extent this theory can be modified to account for particles being suspended in the ambient fluid. To this end, the asymptotic theory developed by Mellor (1972) is applied to the Favré-averaged equations for the carrier fluid as well as the dispersed phase derived on the basis of a volume averaged dispersed two-phase theory (Gray &Lee, 1977). Numerical solutions for profiles of main stream velocities and particle volume frac- tion in the fully turbulent region of the boundary layer for different turbulent Schmidt numbers are computed applying a Finite Difference box scheme. In particular, atten- tion is focused on the turbulent re-suspension process of particles from dense granular flow adjacent to the bounding surface into the suspension. From these results boundary conditions in form of wall functions for velocities as well as the volume fraction of the particles can be derived and the validity of analogy laws between turbulent mass and momentum transfer at the bounding surface can be proved from an asymptotic point of view. The application of these concepts in the field of snow avalanche simulation (Zwinger, 2000) is discussed.

Enhancing Defense Standardization Specifications and Standards: Cornerstones of Quality

DTIC Science & Technology

1988-11-01

Aerospace technical void f/iat is 11uIn irh’s AssNociatlonl ent it led Inipw IIc o / Iflh’rnational Standlardi_-a- ool I/ irc’,i (on /he 1..Avro.spwcc Indust...o’Defense Index oj*Spec~ fica - tions and Standards. While there are nearly 50,000 documents listed. there are only about 27,000 military specifications and...authority of the General Services Administra - tion, their assistance is necessary for full implementation; as is the assistance of the National

Species Profiles: Life Histories and Environmental Requirements of Coastal Fishes and Invertebrates (South Atlantic): Atlantic Sturgeon,

DTIC Science & Technology

1984-07-01

incidentally to a shad fishery in the the late 1800’s were due to a combina- St. Lucie River, Florida. tion of overfishing , pollution, and dam...The species once supported significant commercial fisheries throughout its range, but stocks have declined because of overfishing , deteriora- tion of...REQUIREMENTS OF COASTA .(U) GEORGIA COOPERATIVE FISHERY RESEARCH UNIT ATHENS M J AVYLE JUL 84 WES/TR/EL-82-4 1UNCLASSIFIED F/6l 6/3 Nmh hEEEE Lim2

Heavy Lift Helicopter - Cargo Handling ATC Program, Volume III. Results of Tests, Inspections, and Evaluations

DTIC Science & Technology

1976-10-01

construc- tion should consider the losses incurred by the E samples and the 2.4% bending/wrap pressure los1 (TOD) incurred by the A-6 sample with respect...charging condi- tions. These elements should be deleted . 418j 2. Grounding Pole a) The contact hook did not ensure positive contact with the load or... deleted as a requirement for the HLH prototype during the ATC program. However, the system was included in the ITR and span position changes were

Investigation of Tri-Service Heat Distribution Systems (Modernization of Existing Underground Heat Distribution Systems).

DTIC Science & Technology

1984-06-01

carrier pipe is usually insulated with preformed calcium silicate or mineral wool insulation. The preformed insula- tion is secured with stainless steel...glass or mineral wool insula- tion. Each tile is installed in this manner. Repair is difficult, but can be done by local workers with readily available...corrosion S Site I and return lines in of condensate line ( mineral wool insulation). 2. Ft. Campbell, 12 Tile system B No insulation was installed on

Burn Center Management of Necrotizing Fasciitis

DTIC Science & Technology

2003-06-01

caesarian sec- tion, vaginal delivery with episiotomy, percutaneous endoscopic gastrostomy, laparoscopy, dental extrac- tion, or liposuction .1,6–11...fasciitis was related to a trivial or unknown injury in six cases and to a small (2% TBSA) contact burn in one case. Two cases re- sulting from liposuction ...31 F Liposuction surgery None 22 8 41 49 Survived 5 48 F Liposuction surgery None 9 6 13 19 Expired 6 72 F Unknown Age, HTN 8 4 51 55 Survived 7 33 M

The Minnesota Wetland Evaluation Methodology for the North Central United States

DTIC Science & Technology

1988-09-01

ground water recharge, and other public benefits ." The realization of the enormity of the job led us in the Spring of 1983 to focus these efforts on...looking for drift lines or subwatersheds, routing flows through upstream de- pollen nngsaround trees along the wetland’s banks. tention basins, and...field observa- tion 2, above) to assess the significance of volume tions such as debris lines or pollen rings on trees changes. adjacent to the site

Cyanide Antidotes for Mass Casualties: Comparison of Intramuscular Injector by Autoinjector, Intraosseous Injection, and Inhalational Delivery

DTIC Science & Technology

2015-12-01

oxygen consump- tion,46,47 we studied the effects of cyanide on cellular oxygen consumption using an XF extracellular flux analyzer (Seahorse...baseline values during whole blood resuscitation (−0.24 0.14 μM at the end of resuscita- tion). Figure 2 also shows the effect of inspired oxygen concen...during respiratory challenges. This composite effect demonstrates uncoupling of the hemo- globin oxygen signal changes from CcO redox state signals

Shortening The Defense Acquisition Cycle: A Transformation Imperative. Center for Strategic Leadership. November 2002. Issues Paper 13-02

DTIC Science & Technology

2002-11-01

rated. Par tic i pants in these re struc tur ing strat e gies met dif fer ent lev els of suc cess. Monetizers and Evap o ra tors pro vided op por tu ni...have all but elim i nated young work ers in the De fense De part ment’s ac - qui si tion op er a tions.” Mr. Claude M. Bolton Jr., As sis tant Sec re

Ultra-Flexible, Invisible Thin-Film Transistors Enabled by Amorphous Metal Oxide/Polymer Channel Layer Blends

DTIC Science & Technology

2015-02-25

all the In 2 O 3 : x %PVP blends, where the polymer chains disrupt oxide lattice forma - tion at the nanoscale grain level rather than at the atomic...oxidative stability. [ 51,52 ] This result can be qualitatively ascribed to the endothermic M–O–M lattice forma - tion acting as heat absorber and the ultra... Irie , M. Komiyama , H. Yui , Supramol. Sci. 1998 , 5 , 411 . [40] D. B. Buchholz , J. Liu , T. J. Marks , M. Zhang , R. P. Chang

Sparse Recovery via l1 and L1 Optimization

DTIC Science & Technology

2014-11-01

problem, with t being the descent direc- tion, obtaining ut = uxx + f − 1 µ p(u) (6) as an evolution equation. We can hope that these L1 regularized (or...implementation. He considered a wide class of second–order elliptic equations and, with Friedman [14], an extension to parabolic equa- tions. In [15, 16...obtaining an elliptic PDE, or by gradi- ent descent to obtain a parabolic PDE. Addition- ally, some PDEs can be rewritten using the L1 subgradient such as the

Bibliography on Metallurgy of High-Purity Tungsten, January 1911 through February 1959

DTIC Science & Technology

1960-01-01

the prepara- A vacuum floating zone apparatus using r.f. beating tion, decomposition , and disproportionation of the Mo was used to grow single...20 140t Chem. Abs., vol. 25, 1931, p. 4471. percent too low. This low d and the decomposition of "#-W" into W and WO contradicts the existence of...6700 for 1,0000. following steps: Pulverization of the concentrate, decomposition by NaOH to obtain Na2WO, purifica- tion of Na2WO, by HCI

Different Resuscitation Strategies and Novel Pharmacologic Treatment with Valproic Acid in Traumatic Brain Injury

DTIC Science & Technology

2017-07-25

which would thereby preserve long - term platelet function. Dekker et al. (2014a) demonstrated that the addition of VPA to FFP resuscita- tion results in...pharmacologic resuscitation: Results of a long - term survival study in a swine polytrauma model. Journal of Trauma, 70, 636–645. Anglin, C. O., Spence...Alam, H. B. (2015b). Addition of low-dose valproic acid to saline resuscita- tion provides neuroprotection and improves long - term outcomes in a large

Program Manager: Journal of the Defense Systems Management College. Volume 17, Number 2, March-April 1988,

DTIC Science & Technology

1988-04-01

Engineering Educa- -Zhejiang Provincial Society of tion College Mechanical Engineering - Bejing Institute of Technology -Zhejiang Commission, China ...17,445 50 50 ( China Lake), and the Air Force Cam- 1970 16,316 52 48 bridge Research Laboratory. 1975 14,537 51 49 1980 16,542 50 50 The FFRDCs basically...Army ( Opera - Brassey’s International Defense tions Research). She holds a B.A. Gains Publishers, 1984), p. 9. degree in mathematics from the Col

Medical Surveillance Monthly Report. Volume 23, Number 3

DTIC Science & Technology

2016-03-01

e use of electronic immunization data sources mini - mizes recall bias, but this bias is still a threat to internal validity. Th ere is less...diagnosis when service members (particularly recruits) present with muscular pain and swell- ing, limited range of motion, or the excretion of dark... plus a diagnosis in any posi- tion of one of the following: “volume deple- tion (dehydration)” (ICD-9: 276.5x; ICD-10: E86.0, E86.1, E86.9), “eff ects

Satellite Vegetation Index Data as a Tool to Forecast Population Dynamics of Medically Important Mosquitoes at Military Installations in the Continental United States

DTIC Science & Technology

2008-07-01

for the two installations. We obtained monthly North American normalized differ- ence vegetation index ( NDVI ) satellite climate data sets for 1981-2005...from the Goddard Space Flight Center."*-" The NDVI measures the greenness of the earth, capturing in one index the combined effects of temperature...humidity, insola- tion, elevation, soils, land use. and precipitation on vegeta- tion. There is an almost-linear relationship between NDVI values and

Heat Flow, Regional Geophysics and Lithosphere Structure In The Czech Republic

NASA Astrophysics Data System (ADS)

Safanda, J.; Cermak, V.; Kresl, M.; Dedecek, P.

Paper summarises and critically revises heat flow data that have been collected in the Czech Republic to date. The regional heat flow density map was prepared in view of all existing heat flow data completed with the similar in the surrounding countries and taking into consideration also temperature measurements in deep boreholes. Crustal temperature profiles were calculated by using the available geological information, results of deep seismic sounding and the laboratory data on radiogenic heat produc- tion and thermal conductivity. Special attention was paid to numerous temperature logs in two sedimentary basins, namely in the Cheb and Ostrava-Karvina coal basins, for which detailed heat flow patterns were proposed. Relationships between heat flow distribution and the crustal/lithosphere evolution, between heat flow and the heat pro- duction of the crustal rocks, heat flow and crustal thickness and the steady-state vs. transient heat transport are discussed.

Basic Requirements for Systems Software Research and Development

NASA Technical Reports Server (NTRS)

Kuszmaul, Chris; Nitzberg, Bill

1996-01-01

Our success over the past ten years evaluating and developing advanced computing technologies has been due to a simple research and development (R/D) model. Our model has three phases: (a) evaluating the state-of-the-art, (b) identifying problems and creating innovations, and (c) developing solutions, improving the state- of-the-art. This cycle has four basic requirements: a large production testbed with real users, a diverse collection of state-of-the-art hardware, facilities for evalua- tion of emerging technologies and development of innovations, and control over system management on these testbeds. Future research will be irrelevant and future products will not work if any of these requirements is eliminated. In order to retain our effectiveness, the numerical aerospace simulator (NAS) must replace out-of-date production testbeds in as timely a fashion as possible, and cannot afford to ignore innovative designs such as new distributed shared memory machines, clustered commodity-based computers, and multi-threaded architectures.

DNA barcoding reveals a cryptic nemertean invasion in Atlantic and Mediterranean waters

NASA Astrophysics Data System (ADS)

Fernández-Álvarez, Fernando Ángel; Machordom, Annie

2013-09-01

For several groups, like nemerteans, morphology-based identification is a hard discipline, but DNA barcoding may help non-experts in the identification process. In this study, DNA barcoding is used to reveal the cryptic invasion of Pacific Cephalothrix cf. simula into Atlantic and Mediterranean coasts. Although DNA barcoding is a promising method for the identification of Nemertea, only 6 % of the known number of nemertean species is currently associated with a correct DNA barcode. Therefore, additional morphological and molecular studies are necessary to advance the utility of DNA barcoding in the characterisation of possible nemertean alien invasions.

Newtonian Nudging For A Richards Equation-based Distributed Hydrological Model

NASA Astrophysics Data System (ADS)

Paniconi, C.; Marrocu, M.; Putti, M.; Verbunt, M.

In this study a relatively simple data assimilation method has been implemented in a relatively complex hydrological model. The data assimilation technique is Newtonian relaxation or nudging, in which model variables are driven towards observations by a forcing term added to the model equations. The forcing term is proportional to the difference between simulation and observation (relaxation component) and contains four-dimensional weighting functions that can incorporate prior knowledge about the spatial and temporal variability and characteristic scales of the state variable(s) being assimilated. The numerical model couples a three-dimensional finite element Richards equation solver for variably saturated porous media and a finite difference diffusion wave approximation based on digital elevation data for surface water dynamics. We describe the implementation of the data assimilation algorithm for the coupled model and report on the numerical and hydrological performance of the resulting assimila- tion scheme. Nudging is shown to be successful in improving the hydrological sim- ulation results, and it introduces little computational cost, in terms of CPU and other numerical aspects of the model's behavior, in some cases even improving numerical performance compared to model runs without nudging. We also examine the sensitiv- ity of the model to nudging term parameters including the spatio-temporal influence coefficients in the weighting functions. Overall the nudging algorithm is quite flexi- ble, for instance in dealing with concurrent observation datasets, gridded or scattered data, and different state variables, and the implementation presented here can be read- ily extended to any features not already incorporated. Moreover the nudging code and tests can serve as a basis for implementation of more sophisticated data assimilation techniques in a Richards equation-based hydrological model.

Ultra-precision fabrication of high density micro-optical backbone interconnections for data center and mobile application

NASA Astrophysics Data System (ADS)

Lohmann, U.; Jahns, J.; Wagner, T.; Werner, C.

2012-10-01

A microoptical 3D interconnection scheme and fabricated samples of this fiberoptical multi-channel interconnec- tion with an actual capacity of 144 channels were shown. Additionally the aspects of micrometer-fabrication of such microoptical interconnection modules in the view of alignment-tolerances were considered. For the realiza- tion of the interconnection schemes, the approach of planar-integrated free space optics (PIFSO) is used with its well known advantages. This approach offers the potential for complex interconnectivity, and yet compact size.

Airloads on Bluff Bodies, with Application to the Rotor-Induced Downloads on Tilt-Rotor Aircraft.

DTIC Science & Technology

1983-09-01

interference aerodynamics would be tion on hover performance (Ref. (11). to study the two-dimensional sec- tion characteristics of a wing in the wake of a...resources for large numbers of vortices; a typical case requires 10-15 min CPU time on the Ames Cray IS computer. Figure 6 shows a typical result. Here...CPU time per case on a Prime 550UPPER SURFACE (WINDWARD) computer to converge to a steady solution; this would be equivalent to one or two seconds on

The Lagrangian Multiplier Method of Finding Upper and Lower Limits to Critical Stresses of Clamped Plates

DTIC Science & Technology

1946-01-01

geometrica ~ boundary condi- tions of the problem. (2) The energy of the load-plate system is computed for this deflection surface and is then minimized...and interpolating to find the k that makes the seriw vanish. The correct value of m is that which gives the lowest value of k. For two half waves (m=2...the square plate, the present rekdively simple upper- and lower-limit calcula- tions show that his est,imatd limit of error is correct for this case

E and F Layer H.F. Volume Backscatter Reflectivities.

DTIC Science & Technology

1980-02-01

organization , please notify RADC (EEP), Hanscom AFB MA 01731. This will assist us in maintaining a current mailing list. Do not return this copy. Retain...6rd F19628-8C06 9. PERFORMING ORGANIZATION NAME AND ADDRESS 10. PROGRAM ELEMENT. PROJECT. TASKARE A & WORK UNIT NUMBERS Deputy for Electronic Technology...p&U?4 and executeA weeath, devetopment, tet and ee.ted atcqu1,6tion p’wgAam6 in a6uppo’cL 06 Command, ContAot Coffexmlico.tionI and InteLigence (C31

Scattering of In-Plane Waves by Elastic Wedges

NASA Astrophysics Data System (ADS)

Mohammadi, K.; Asimaki, D.; Fradkin, L.

2014-12-01

The scattering of seismic waves by elastic wedges has been a topic of interest in seismology and geophysics for many decades. Analytical, semi-analytical, experimental and numerical studies on idealized wedges have provided insight into the seismic behavior of continental margins, mountain roots and crustal discontinuities. Published results, however, have almost exclusively focused on incident Rayleigh waves and out-of-plane body (SH) waves. Complementing the existing body of work, we here present results from our study on the res­ponse of elastic wedges to incident P or SV waves, an idealized pro­blem that can provide valuable insight to the understanding and parameterization of topographic ampli­fication of seismic ground mo­tion. We first show our earlier work on explicit finite difference simulations of SV-wave scattering by elastic wedges over a wide range of internal angles. We next present a semi-analytical solution that we developed using the approach proposed by Gautesen, to describe the scattered wavefield in the immediate vicinity of the wedge's tip (near-field). We use the semi-analytical solution to validate the numerical analyses, and improve resolution of the amplification factor at the wedge vertex that spikes when the internal wedge angle approaches the critical angle of incidence.

What is "Object-Oriented Programming"?

NASA Astrophysics Data System (ADS)

Stroustrup, Bjarne

"Object-Oriented Programming" and "Data Abstraction" have become very common terms. Unfortunately, few people agree on what they mean. I will offer informal definitions that appear to make sense in the context of languages like Ada, C++, Modula-2, Simula67, and Smalltalk. The general idea is to equate "support for data abstraction" with the ability to define and use new types and equate "support for object-oriented programming" with the ability to express type hierarchies. Features necessary to support these programming styles in a general purpose programming language will be discussed. The presentation centers around C++ but is not limited to facilities provided by that language.

Defense Advanced Research Projects Agency Fiscal Year 1982 Research & Development Program. Summary Statement by Dr. Robert R. Fossum, Director Before the Research & Development Subcommittee of the House Armed Services Committee

DTIC Science & Technology

1981-03-12

feasibility of a laser suitable for space opera- tion. Its objective is to demonstrate tte laser device technology in 11-37 tion, Its i extracting a high power...acoustic signal processing testbed will officially transfer to the Navy Undersea Surveillance Office at the end of FY 1982. This gives the Navy a...advanced undersea vehicle programs. 2. Air Vehicles and Weapons This addresses innovative concepts such as the X-Wing and the Forward Swept Wing

Applications of Tol2 Transposon-Mediated Gene Transfer for Stable Integration and Conditional Expression of Electroporated Genes in Chicken Embryos

NASA Astrophysics Data System (ADS)

Sato, Yuki; Takahashi, Yoshiko

Because of the high accessibility to developing embryos, avian embryos (chicken and quail) have long been used as a good model animal to study embryogenesis in vertebrates, especially amniotes (reviewed in Wolpert, 2004). The techniques used for “classical” avian embryology included tissue transplantations, tissue ablations, and cell-labeling by vital dye. At the end of the last century, the in ovo electropora tion technique was developed by Nakamura and his colleagues, and this modern method opened a way to study the roles of developmental genes directly in living embryos (Funahashi et al., 1999) reviewed in (Nakamura et al., 2004; Yasuda et al., 2000; Yasugi and Nakamura, 2000). This powerful technique allows us to introduce genes (DNA, RNA, morpholino) into embryos in a tissue-specific way by targeting a restricted area of embryonic tissues. Thus, the electroporation technique using chickens has provided numerous novel insights into the understanding of early development in vertebrates, making the chicken a unique model animal.

Chaotic, informational and synchronous behaviour of multiplex networks

NASA Astrophysics Data System (ADS)

Baptista, M. S.; Szmoski, R. M.; Pereira, R. F.; Pinto, S. E. De Souza

2016-03-01

The understanding of the relationship between topology and behaviour in interconnected networks would allow to charac- terise and predict behaviour in many real complex networks since both are usually not simultaneously known. Most previous studies have focused on the relationship between topology and synchronisation. In this work, we provide analytical formulas that shows how topology drives complex behaviour: chaos, information, and weak or strong synchronisation; in multiplex net- works with constant Jacobian. We also study this relationship numerically in multiplex networks of Hindmarsh-Rose neurons. Whereas behaviour in the analytically tractable network is a direct but not trivial consequence of the spectra of eigenvalues of the Laplacian matrix, where behaviour may strongly depend on the break of symmetry in the topology of interconnections, in Hindmarsh-Rose neural networks the nonlinear nature of the chemical synapses breaks the elegant mathematical connec- tion between the spectra of eigenvalues of the Laplacian matrix and the behaviour of the network, creating networks whose behaviour strongly depends on the nature (chemical or electrical) of the inter synapses.

Studies on Morphological and Physio-Ecological Variations of the Reniform Nematode, Rotylenchulus reniformis Linford and Oliveira, 1940 with an Emphasis on Differential Geographical Distribution of Amphimictic and Parthenogenetic Populations in Japan

PubMed Central

Nakasono, Kazutoshi

2004-01-01

The geographical distribution and polymorphism in morphological and biological characters of the reniform nematode, Rotylenchulus reniformis, in Japan were studied. The northern limit of habitat of this nematode was found on the 14 °C isothermal line of annual average-air temperature. Three morphologically different groups were ascertained which corresponded to three biological types based on male frequency. Incidence of males was consistent within populations and was not affected by environmental factors. Sexual attraction of males by females indicated reproductive isolation between the male-numerous type (MNT) and male-rare type (MRT) or male-absent type (MAT). Reproduction was amphimictic in the MNT and parthenogenetic in the MRT and MAT. Larval development in both MRT and MAT, but not that of MNT popula-tions, was inhibited at 34 °C. Differences in host preference were also observed among populations. PMID:19262821

Laminar Boundary-Layer Instabilities on Hypersonic Cones: Computations for Benchmark Experiments

DTIC Science & Technology

2005-06-01

Reo, 8 • and tion. Exponential stretching was used in both direc- str . Agreement with the other researchers is better tions to cluster grid points near...kPa) 525 T, (K) 319.0 0.0003- Too (K) 92.53 s=0.15m p. (kg/m 3 ) 0.02592 0.0002 - ReO/m 2.74x 107 S=0.05m str (m) 0.278 0.0001 0 200 400 600 u (m/s...der nasenstumpfheit auf grenzschichtinstabilit5 ten [37] G.P. Matthews, C.M.S.R. Thomas, A.N. Dufty, bei axialsymmetrischer kegelumstr~ mung im and E.B

United States Air Force Statistical Digest, Fiscal Year 1962, Seventeenth Edition

DTIC Science & Technology

1962-09-30

belOW’Is a revision of ’lable 44, FY 1961 GAINS Not Beyond Eco From TYPE, M:lDEL, AND SERIES Pro- MAP, From Redes - Com-Total due- USA, Other i_- Total... Redes - mer- ebec- Recla-tion and t10n i_- cia! lete ma- USN tion Sale t10n ..FIR8l’ ’HALF FY 1962 (1 July W& . . ill 446 18 20 ~ 1,451 281 8 1 .21...LOSSES BY TV e; --- GAINS 110’ .7ŕ’" Eco From TYPE, MODEL, ANDSERlES; Pro- MAP, From Redes - Com- Total duc- USA, other tgne- Total Redes - A>_ Hecla.t10n

Quantifying Square Membrane Wrinkle Behavior Using MITC Shell Elements

NASA Technical Reports Server (NTRS)

Jacobson, Mindy B.; Iwasa, Takashi; Natori, M. C.

2004-01-01

For future membrane based structures, quantified predictions of membrane wrinkling behavior in terms of amplitude, angle and wavelength are needed to optimize the efficiency and integrity of such structures, as well as their associated control systems. For numerical analyses performed in the past, limitations on the accuracy of membrane distortion simulations have often been related to the assumptions made while using finite elements. Specifically, this work demonstrates that critical assumptions include: effects of gravity. supposed initial or boundary conditions, and the type of element used to model the membrane. In this work, a 0.2 square meter membrane is treated as a structural material with non-negligible bending stiffness. Mixed Interpolation of Tensorial Components (MTTC) shell elements are used to simulate wrinkling behavior due to a constant applied in-plane shear load. Membrane thickness, gravity effects, and initial imperfections with respect to flatness were varied in numerous nonlinear analysis cases. Significant findings include notable variations in wrinkle modes for thickness in the range of 50 microns to 1000 microns, which also depend on the presence of an applied gravity field. However, it is revealed that relationships between overall strain energy density for cases with differing initial conditions are independent of assumed initial con&tions. In addition, analysis results indicate that the relationship between amplitude scale (W/t) and structural scale (L/t) is linear in the presence of a gravity field.

Applications of diatoms as potential microalgae in nanobiotechnology.

PubMed

Jamali, Ali Akbar; Akbari, Fariba; Ghorakhlu, Mohamad Moradi; de la Guardia, Miguel; Yari Khosroushahi, Ahmad

2012-01-01

Diatoms are single cell eukaryotic microalgae, which present in nearly every water habitat make them ideal tools for a wide range of applications such as oil explora-tion, forensic examination, environmental indication, biosilica pattern generation, toxicity testing and eutrophication of aqueous ecosystems. Essential information on diatoms were reviewed and discussed towards impacts of diatoms on biosynthesis and bioremediation. In this review, we present the recent progress in this century on the application of diatoms in waste degradation, synthesis of biomaterial, biomineraliza-tion, toxicity and toxic effects of mineral elements evaluations. Diatoms can be considered as metal toxicity bioindicators and they can be applied for biomineralization, synthesis of biomaterials, and degradation of wastes.

Explicit filtering in large eddy simulation using a discontinuous Galerkin method

NASA Astrophysics Data System (ADS)

Brazell, Matthew J.

The discontinuous Galerkin (DG) method is a formulation of the finite element method (FEM). DG provides the ability for a high order of accuracy in complex geometries, and allows for highly efficient parallelization algorithms. These attributes make the DG method attractive for solving the Navier-Stokes equations for large eddy simulation (LES). The main goal of this work is to investigate the feasibility of adopting an explicit filter in the numerical solution of the Navier-Stokes equations with DG. Explicit filtering has been shown to increase the numerical stability of under-resolved simulations and is needed for LES with dynamic sub-grid scale (SGS) models. The explicit filter takes advantage of DG's framework where the solution is approximated using a polyno- mial basis where the higher modes of the solution correspond to a higher order polynomial basis. By removing high order modes, the filtered solution contains low order frequency content much like an explicit low pass filter. The explicit filter implementation is tested on a simple 1-D solver with an initial condi- tion that has some similarity to turbulent flows. The explicit filter does restrict the resolution as well as remove accumulated energy in the higher modes from aliasing. However, the ex- plicit filter is unable to remove numerical errors causing numerical dissipation. A second test case solves the 3-D Navier-Stokes equations of the Taylor-Green vortex flow (TGV). The TGV is useful for SGS model testing because it is initially laminar and transitions into a fully turbulent flow. The SGS models investigated include the constant coefficient Smagorinsky model, dynamic Smagorinsky model, and dynamic Heinz model. The constant coefficient Smagorinsky model is over dissipative, this is generally not desirable however it does add stability. The dynamic Smagorinsky model generally performs better, especially during the laminar-turbulent transition region as expected. The dynamic Heinz model which is based on an improved model, handles the laminar-turbulent transition region well while also showing additional robustness.

Optimization of a high-yield, low-areal-density fusion product source at the National Ignition Facility with applications in nucleosynthesis experiments

NASA Astrophysics Data System (ADS)

Gatu Johnson, M.; Casey, D. T.; Hohenberger, M.; Zylstra, A. B.; Bacher, A.; Brune, C. R.; Bionta, R. M.; Craxton, R. S.; Ellison, C. L.; Farrell, M.; Frenje, J. A.; Garbett, W.; Garcia, E. M.; Grim, G. P.; Hartouni, E.; Hatarik, R.; Herrmann, H. W.; Hohensee, M.; Holunga, D. M.; Hoppe, M.; Jackson, M.; Kabadi, N.; Khan, S. F.; Kilkenny, J. D.; Kohut, T. R.; Lahmann, B.; Le, H. P.; Li, C. K.; Masse, L.; McKenty, P. W.; McNabb, D. P.; Nikroo, A.; Parham, T. G.; Parker, C. E.; Petrasso, R. D.; Pino, J.; Remington, B.; Rice, N. G.; Rinderknecht, H. G.; Rosenberg, M. J.; Sanchez, J.; Sayre, D. B.; Schoff, M. E.; Shuldberg, C. M.; Séguin, F. H.; Sio, H.; Walters, Z. B.; Whitley, H. D.

2018-05-01

Polar-direct-drive exploding pushers are used as a high-yield, low-areal-density fusion product source at the National Ignition Facility with applications including diagnostic calibration, nuclear security, backlighting, electron-ion equilibration, and nucleosynthesis-relevant experiments. In this paper, two different paths to improving the performance of this platform are explored: (i) optimizing the laser drive, and (ii) optimizing the target. While the present study is specifically geared towards nucleosynthesis experiments, the results are generally applicable. Example data from T2/3He-gas-filled implosions with trace deuterium are used to show that yield and ion temperature (Tion) from 1.6 mm-outer-diameter thin-glass-shell capsule implosions are improved at a set laser energy by switching from a ramped to a square laser pulse shape, and that increased laser energy further improves yield and Tion, although by factors lower than predicted by 1 D simulations. Using data from D2/3He-gas-filled implosions, yield at a set Tion is experimentally verified to increase with capsule size. Uniform D3He-proton spectra from 3 mm-outer-diameter CH shell implosions demonstrate the utility of this platform for studying charged-particle-producing reactions relevant to stellar nucleosynthesis.

Optimization of a high-yield, low-areal-density fusion product source at the National Ignition Facility with applications in nucleosynthesis experiments

DOE PAGES

Gatu Johnson, M.; Casey, D. T.; Hohenberger, M.; ...

2018-05-09

Polar-direct-drive exploding pushers are used as a high-yield, low-areal-density fusion product source at the National Ignition Facility with applications including diagnostic calibration, nuclear security, backlighting, electron-ion equilibration, and nucleosynthesis-relevant experiments. In this paper, two different paths to improving the performance of this platform are explored: (i) optimizing the laser drive, and (ii) optimizing the target. While the present study is specifically geared towards nucleosynthesis experiments, the results are generally applicable. Example data from T 2/ 3He-gas-filled implosions with trace deuterium are used to show that yield and ion temperature (Tion) from 1.6 mm-outer-diameter thin-glass-shell capsule implosions are improved at amore » set laser energy by switching from a ramped to a square laser pulse shape, and that increased laser energy further improves yield and Tion, although by factors lower than predicted by 1 D simulations. Using data from D2-3He-gas-filled implosions, yield at a set Tion is experimentally verified to increase with capsule size. Uniform D-3He-proton spectra from 3 mm-outer-diameter CH shell implosions demonstrate the utility of this platform for studying charged-particle-producing reactions relevant to stellar nucleosynthesis.« less

Optimization of a high-yield, low-areal-density fusion product source at the National Ignition Facility with applications in nucleosynthesis experiments

DOE Office of Scientific and Technical Information (OSTI.GOV)

Gatu Johnson, M.; Casey, D. T.; Hohenberger, M.

Polar-direct-drive exploding pushers are used as a high-yield, low-areal-density fusion product source at the National Ignition Facility with applications including diagnostic calibration, nuclear security, backlighting, electron-ion equilibration, and nucleosynthesis-relevant experiments. In this paper, two different paths to improving the performance of this platform are explored: (i) optimizing the laser drive, and (ii) optimizing the target. While the present study is specifically geared towards nucleosynthesis experiments, the results are generally applicable. Example data from T 2/ 3He-gas-filled implosions with trace deuterium are used to show that yield and ion temperature (Tion) from 1.6 mm-outer-diameter thin-glass-shell capsule implosions are improved at amore » set laser energy by switching from a ramped to a square laser pulse shape, and that increased laser energy further improves yield and Tion, although by factors lower than predicted by 1 D simulations. Using data from D2-3He-gas-filled implosions, yield at a set Tion is experimentally verified to increase with capsule size. Uniform D-3He-proton spectra from 3 mm-outer-diameter CH shell implosions demonstrate the utility of this platform for studying charged-particle-producing reactions relevant to stellar nucleosynthesis.« less

Trajectory Simulation of Meteors Assuming Mass Loss and Fragmentation

NASA Technical Reports Server (NTRS)

Allen, Gary A., Jr.; Prabhu, Dinesh K.; Saunders, David A

2015-01-01

Program used to simulate atmospheric flight trajectories of entry capsules [1] Includes models of atmospheres of different planetary destinations - Earth, Mars, Venus, Jupiter, Saturn, Uranus, Titan, ... Solves 3-­-degrees of freedom (3DoF) equations for a single body treated as a point mass. Also supports 6-DoF trajectory simula4on and Monte Carlo analyses. Uses Fehlberg-­-Runge-­-Kuna (4th-5th order) time integraion with automaic step size control. Includes rotating spheroidal planet with gravitational field having a J2 harmonic. Includes a variety of engineering aerodynamic and heat flux models. Capable of specifying events - heatshield jettison, parachute deployment, etc. - at predefined altitudes or Mach number. Has material thermal response models of typical aerospace materials integrated.

Two-stage stochastic unit commitment model including non-generation resources with conditional value-at-risk constraints

DOE Office of Scientific and Technical Information (OSTI.GOV)

Huang, Yuping; Zheng, Qipeng P.; Wang, Jianhui

2014-11-01

tThis paper presents a two-stage stochastic unit commitment (UC) model, which integrates non-generation resources such as demand response (DR) and energy storage (ES) while including riskconstraints to balance between cost and system reliability due to the fluctuation of variable genera-tion such as wind and solar power. This paper uses conditional value-at-risk (CVaR) measures to modelrisks associated with the decisions in a stochastic environment. In contrast to chance-constrained modelsrequiring extra binary variables, risk constraints based on CVaR only involve linear constraints and con-tinuous variables, making it more computationally attractive. The proposed models with risk constraintsare able to avoid over-conservative solutions butmore » still ensure system reliability represented by loss ofloads. Then numerical experiments are conducted to study the effects of non-generation resources ongenerator schedules and the difference of total expected generation costs with risk consideration. Sen-sitivity analysis based on reliability parameters is also performed to test the decision preferences ofconfidence levels and load-shedding loss allowances on generation cost reduction.« less

Microscopic Electron Variations Measured Simultaneously By The Cluster Spacecraft

NASA Astrophysics Data System (ADS)

Buckley, A. M.; Carozzi, T. D.; Gough, M. P.; Beloff, N.

Data is used from the Particle Correlator experiments running on each of the four Cluster spacecraft so as to determine common microscopic behaviour in the elec- tron population observed over the macroscopic Cluster separations. The Cluster par- ticle correlator experiments operate by forming on board Auto Correlation Functions (ACFs) generated from short time series of electron counts obtained, as a function of electron energy, from the PEACE HEEA sensor. The information on the microscopic variation of the electron flux covers the frequency range DC up to 41 kHz (encom- passing typical electron plasma frequencies and electron gyro frequencies and their harmonics), the electron energy range is that covered by the PEACE HEEA sensor (within the range 1 eV to 26 keV). Results are presented of coherent electron struc- tures observed simultaneously by the four spacecraft in the differing plasma interac- tion regions and boundaries encountered by Cluster. As an aid to understanding the plasma interactions, use is made of numerical simulations which model both the un- derlying statistical properties of the electrons and also the manner in which particle correlator experiments operate.

Arrhenius Rate: constant volume burn

DOE Office of Scientific and Technical Information (OSTI.GOV)

Menikoff, Ralph

A constant volume burn occurs for an idealized initial state in which a large volume of reactants at rest is suddenly raised to a high temperature and begins to burn. Due to the uniform spatial state, there is no fluid motion and no heat conduction. This reduces the time evolu tion to an ODE for the reaction progress variable. With an Arrhenius reaction rate, two characteristics of thermal ignition are illustrated: induction time and thermal runaway. The Frank-Kamenetskii approximation then leads to a simple expression for the adiabatic induction time. For a first order reaction, the analytic solution is derivedmore » and used to illustrate the effect of varying the activation temperature; in particular, on the induction time. In general, the ODE can be solved numerically. This is used to illustrate the effect of varying the reaction order. We note that for a first order reaction, the time evolution of the reaction progress variable has an exponential tail. In contrast, for a reaction order less than one, the reaction completes in a nite time. The reaction order also affects the induction time.« less

Your First Chiropractic Visit

MedlinePlus

... to general physical examination procedures such as blood pres- sure, pulse, respiration, and temperature, the examina- tion will include specific orthopedic and neurological tests to assess: • Range of motion of the affected ...

Cystogram

MedlinePlus

... showing the bladder (solid arrow) filling with a contrast agent. The catheter used to fill the bladder also ... taken. This final radiograph will show whether any contrast agent stays in your bladder following urina- tion. Any ...

Protect Yourself: Respirators

MedlinePlus

... dust masks) can be used for dust, mists, welding fumes, etc. They do not provide protection from ... tion against most vapors, acid gases, dust or welding fumes. Cartridges/filters must match contaminant(s) and be ...

Monomethylioarsenicals are substratres for human arsenic (+3 oxidation state) methyltransferase

EPA Science Inventory

Monomethylthioarsenicals are substrates for human arsenic (+3 oxida1tion state) methyltransferase Methylated thioarsenicals are structural analogs of methylated oxyarsenic in which one or more oxygen atom bound t...

Economic Effectiveness of Mandatory Engine Maintenance for ...

EPA Pesticide Factsheets

... SOCIAL IIIIII~~II~'IIII~~II ::¥~~NN~~~~~G MODEl ... failing an inspec- tion based upon a rejection criteria for each maladjustment are then sent ...

Review of ITS/CVO Institutional Issues Studies

DOT National Transportation Integrated Search

1997-03-01

Several regional coalitions are developing multi-year programs for commercial vehicle opera-tions (CVO). This program will include the application of Intelligent Transportation Systems (ITS) technologies and services. This report identifies the insti...

Simulating Air Quality Investiga tions with the Programmable Calculator

ERIC Educational Resources Information Center

Craig, James C.

1974-01-01

Describes ways in which a student might use a programmable calculator to obtain air pollution data for a particular locale and outlines the teacher's role in preparing the Computer Simulated Experimentation. (JR)

Global asymptotic stability and hopf bifurcation for a blood cell production model.

PubMed

Crauste, Fabien

2006-04-01

We analyze the asymptotic stability of a nonlinear system of two differential equations with delay, describing the dynamics of blood cell produc- tion. This process takes place in the bone marrow, where stem cells differen- tiate throughout division in blood cells. Taking into account an explicit role of the total population of hematopoietic stem cells in the introduction of cells in cycle, we are led to study a characteristic equation with delay-dependent coefficients. We determine a necessary and sufficient condition for the global stability of the first steady state of our model, which describes the popula- tion's dying out, and we obtain the existence of a Hopf bifurcation for the only nontrivial positive steady state, leading to the existence of periodic solutions. These latter are related to dynamical diseases affecting blood cells known for their cyclic nature.

Temporal and Spatial Shaping of X-Ray Free-Electron Lasers

DOE Office of Scientific and Technical Information (OSTI.GOV)

Guo, G; Marinelli, AGOSTINO

The x-ray free-elec­tron laser is the bright­est source of x-rays, with a peak bright­ness ten or­ders of mag­ni­tude higher than con­ven­tional syn­chro­tron ra­di­a­tion sources. Much like con­ven­tional lasers, XFELs are ex­tremely flex­i­ble ma­chines and the prop­er­ties of the x-rays can be con­trolled by ac­cu­rately ma­nip­u­lat­ing the las­ing medium, i.e. the elec­tron beam. In my talk I will dis­cuss past and pre­sent re­search on shap­ing the tem­po­ral prop­er­ties of the x-rays at the Linac Co­her­ent Light Source (LCLS). I will dis­cuss the two-color FEL modes and their ap­pli­ca­tions in user ex­per­i­ments. Fi­nally I will pre­sent our re­sults on laser-shap­ing of x-raymore » pulses and our plans for at­tosec­ond op­er­a­tion in the soft x-ray regime.« less

Human-centered systems : the next challenge in transportation

DOT National Transportation Integrated Search

1999-06-01

The "human-centered systems" approach focuses on human capabili : ties and limitations with respect to human/system interfaces, opera : tions, and system integration. The goal is to design transportation : systems that facilitate task completion, so ...

DOE Office of Scientific and Technical Information (OSTI.GOV)

Behnke, M. R.; Bellei, T.A.; Bloethe, W.G.

This paper presents a summary of the most impor- tant considerations for wind power plant collection system un- derground and overhead cable designs. Various considerations, including conductor selection, soil thermal properties, installa- tion methods, splicing, concentric grounding, and NESC/NEC requirements are discussed.

A survey of electric and hybrid vehicle simulation programs

NASA Technical Reports Server (NTRS)

Bevan, J.; Heimburger, D. A.; Metcalfe, M. A.

1978-01-01

Results of a survey conducted within the United States to determine the extent of development and capabilities of automotive performance simulation programs suitable for electric and hybrid vehicle studies are summarized. Altogether, 111 programs were identified as being in a usable state. The complexity of the existing programs spans a range from a page of simple desktop calculator instructions to 300,000 lines of a high-level programming language. The capability to simulate electric vehicles was most common, heat-engines second, and hybrid vehicles least common. Batch-operated programs are slightly more common than interactive ones, and one-third can be operated in either mode. The most commonly used language was FORTRAN, the language typically used by engineers. The higher-level simulation languages (e.g. SIMSCRIPT, GPSS, SIMULA) used by "model builders" were conspicuously lacking.

Prefabricated vertical drains, vol. I : engineering guidelines.

DOT National Transportation Integrated Search

1986-09-01

This volume presents procedures and guidelines applicable to the design and instal tion of prefabricated vertical drains to accelerate consolidation of soils. The contents represent the Consultant's interpretation of the state-of-the-art as of August...

40 CFR 227.27 - Limiting permissible con-cen-tra-tion (LPC).

Code of Federal Regulations, 2014 CFR

2014-07-01

... scientific literature or accepted by EPA as being reliable test organisms to determine the anticipated impact... for each type they represent, and that are documented in the scientific literature and accepted by EPA...

40 CFR 227.27 - Limiting permissible con-cen-tra-tion (LPC).

Code of Federal Regulations, 2013 CFR

2013-07-01

... scientific literature or accepted by EPA as being reliable test organisms to determine the anticipated impact... for each type they represent, and that are documented in the scientific literature and accepted by EPA...

Validation protocol for digital audio recorders used in aircraft-noise-certification testing

DOT National Transportation Integrated Search

2010-11-01

The U.S. Department of Transportation, Research and Innovative Technology Administra-tion, John A. Volpe National Transportation Systems Center, Environmental Measurement and Modeling Division (Volpe), is supporting the aircraft noise certification i...

40 CFR 227.6 - Constituents prohibited as other than trace contaminants.

Code of Federal Regulations, 2012 CFR

2012-07-01

... petroleum, oil sludge, oil refuse, crude oil, fuel oil, heavy diesel oil, lubricating oils, hydraulic fluids... undesirable effects due -either to chronic toxicity or to bio-ac-cumu-la-tion in marine organisms after...

40 CFR 227.6 - Constituents prohibited as other than trace contaminants.

Code of Federal Regulations, 2014 CFR

2014-07-01

... petroleum, oil sludge, oil refuse, crude oil, fuel oil, heavy diesel oil, lubricating oils, hydraulic fluids... undesirable effects due -either to chronic toxicity or to bio-ac-cumu-la-tion in marine organisms after...

40 CFR 227.6 - Constituents prohibited as other than trace contaminants.

Code of Federal Regulations, 2013 CFR

2013-07-01

... petroleum, oil sludge, oil refuse, crude oil, fuel oil, heavy diesel oil, lubricating oils, hydraulic fluids... undesirable effects due -either to chronic toxicity or to bio-ac-cumu-la-tion in marine organisms after...

Dynamic Constitutive/Failure Models

DTIC Science & Technology

1988-12-01

compressive failure--microfracture versus microplasticity . Actual traces observed in plate impact tests on ceramic targets are hardly ever as simple as the...observa- tions for microfracture and microplasticity . Unfortunately, each team of investigators has used slightly different experimental techniques and

Research on TRIZ and CAIs Application Problems for Technology Innovation

NASA Astrophysics Data System (ADS)

Li, Xiangdong; Li, Qinghai; Bai, Zhonghang; Geng, Lixiao

In order to realize application of invent problem solve theory (TRIZ) and computer aided innovation software (CAIs) , need to solve some key problems, such as the mode choice of technology innovation, establishment of technology innovation organization network(TION), and achievement of innovative process based on TRIZ and CAIs, etc.. This paper shows that the demands for TRIZ and CAIs according to the characteristics and existing problem of the manufacturing enterprises. Have explained that the manufacturing enterprises need to set up an open TION of enterprise leading type, and achieve the longitudinal cooperation innovation with institution of higher learning. The process of technology innovation based on TRIZ and CAIs has been set up from researching and developing point of view. Application of TRIZ and CAIs in FY Company has been summarized. The application effect of TRIZ and CAIs has been explained using technology innovation of the close goggle valve product.

The Effects of Realistic Geological Heterogeneity on Seismic Modeling: Applications in Shear Wave Generation and Near-Surface Tunnel Detection

NASA Astrophysics Data System (ADS)

Sherman, Christopher Scott

Naturally occurring geologic heterogeneity is an important, but often overlooked, aspect of seismic wave propagation. This dissertation presents a strategy for modeling the effects of heterogeneity using a combination of geostatistics and Finite Difference simulation. In the first chapter, I discuss my motivations for studying geologic heterogeneity and seis- mic wave propagation. Models based upon fractal statistics are powerful tools in geophysics for modeling heterogeneity. The important features of these fractal models are illustrated using borehole log data from an oil well and geomorphological observations from a site in Death Valley, California. A large part of the computational work presented in this disserta- tion was completed using the Finite Difference Code E3D. I discuss the Python-based user interface for E3D and the computational strategies for working with heterogeneous models developed over the course of this research. The second chapter explores a phenomenon observed for wave propagation in heteroge- neous media - the generation of unexpected shear wave phases in the near-source region. In spite of their popularity amongst seismic researchers, approximate methods for modeling wave propagation in these media, such as the Born and Rytov methods or Radiative Trans- fer Theory, are incapable of explaining these shear waves. This is primarily due to these method's assumptions regarding the coupling of near-source terms with the heterogeneities and mode conversion. To determine the source of these shear waves, I generate a suite of 3D synthetic heterogeneous fractal geologic models and use E3D to simulate the wave propaga- tion for a vertical point force on the surface of the models. I also present a methodology for calculating the effective source radiation patterns from the models. The numerical results show that, due to a combination of mode conversion and coupling with near-source hetero- geneity, shear wave energy on the order of 10% of the compressional wave energy may be generated within the shear radiation node of the source. Interestingly, in some cases this shear wave may arise as a coherent pulse, which may be used to improve seismic imaging efforts. In the third and fourth chapters, I discuss the results of a numerical analysis and field study of seismic near-surface tunnel detection methods. Detecting unknown tunnels and voids, such as old mine workings or solution cavities in karst terrain, is a challenging prob- lem in geophysics and has implications for geotechnical design, public safety, and domestic security. Over the years, a number of different geophysical methods have been developed to locate these objects (microgravity, resistivity, seismic diffraction, etc.), each with varying results. One of the major challenges facing these methods is understanding the influence of geologic heterogeneity on their results, which makes this problem a natural extension of the modeling work discussed in previous chapters. In the third chapter, I present the results of a numerical study of surface-wave based tunnel detection methods. The results of this analysis show that these methods are capable of detecting a void buried within one wavelength of the surface, with size potentially much less than one wavelength. In addition, seismic surface- wave based detection methods are effective in media with moderate heterogeneity (epsilon < 5 %), and in fact, this heterogeneity may serve to increase the resolution of these methods. In the fourth chapter, I discuss the results of a field study of tunnel detection methods at a site within the Black Diamond Mines Regional Preserve, near Antioch California. I use a com- bination of surface wave backscattering, 1D surface wave attenuation, and 2D attenuation tomography to locate and determine the condition of two tunnels at this site. These results compliment the numerical study in chapter 3 and highlight their usefulness for detecting tunnels at other sites.

Une plate-forme en distension, témoin de phases pré-accrétion téthysienne en Afrique du Nord pendant le Toarcien Aalénien (synclinal Iguer Awragh Afennourir, Moyen Atlas occidental, Maroc)A pre-accretional extensional platform of the North African Tethys during the Toarcian Aalenian (Iguer Awragh Afennourir syncline, western Middle Atlas, Morocco)

NASA Astrophysics Data System (ADS)

El Hammichi, Fatima; Elmi, Serge; Faure-Muret, Anne; Benshilil, Khadija

2002-10-01

A stratigraphic study and mapping allow defining the particular features of this area of the southwestern Middle Atlas (Morocco) during the Toarcian and the Aalenian. Numerous spectacular variations in thickness and facies are documented by the discovery of coralline build-ups dated to the Late Toarcian. They occur along the palaeostructures. Development of the structures occurred in several stages: (1) initial differentiation during the Early and Middle Toarcian; (2) homogenisation during the Late Toarcian, after the construction of the reefs. The Aalenian history is similar: differentiation (Early Aalenian)-homogenisation (Middle to Late Aalenian). Two palaeostructural trends are evident: SW-NE and transverse SSW-NNE to south-north. These caused separation of several subbasins, which alternatively deepened and shallowed, probably due to the tilting of several blocks to the southwest. To cite this article: F. El Hammichi et al., C. R. Geoscience 334 (2002) 1003-1010.

Development of a Predictive Corrosion Model Using Locality-Specific Corrosion Indices

DTIC Science & Technology

2017-09-12

6 3.2.1 Statistical data analysis methods ...6 3.2.2 Algorithm development method ...components, and method ) were compiled into an executable program that uses mathematical models of materials degradation, and statistical calcula- tions

JPRS Report, Soviet Union Economic Affairs

DTIC Science & Technology

1988-11-01

Shatlykgazstroy [ Shatlyk Gas Construction] Trust and a group of Romanian construc- tion workers. A creative camaraderie was established between the...international collectives, and competition developed for the fastest start-up of the facilities. The Shatlyk gas-construction workers are successfully

[Morphobiochemical adaptations of Mediterranean Littorina punctata (Gmelin, 1790) (Mollusca, Gastropoda) to survival under supralittoral conditions].

PubMed

Aliakrinskaia, I O

2014-01-01

Behavioral and morphobiochemical adaptations of Littorina punctata to dwelling under supralittoral condi- tions are analyzed. A quantitative estimation of the hemoglobin content in the radular tissues of the mollusk is given.

Traffic control at stop sign approaches.

DOT National Transportation Integrated Search

2003-04-01

The objectives of this report were to: a) determine the number of crashes in Kentucky involving a driver disregarding a stop sign and the locations where these occur, b) determine the characteristics of these crashes, c) investigate loca tions with a...

Sharing the Cyber Journey

DTIC Science & Technology

2012-01-01

destroy information; disrupt networks or communications; or deny service. In military terms, cyberspace is a contested environment. Hactivists, cyber ... criminals , terrorists, and adversarial nations are active in cyberspace networks across the globe; our military networks are no excep­ tion. DoD

Glacial Influences on Solar Radiation in a Subarctic Sea.

EPA Science Inventory

Understanding macroscale processes controlling solar radia­tion in marine systems will be important in interpreting the potential effects of global change from increasing ultraviolet radiation (UV) and glacial retreat. This study provides the first quantitative assessment of UV i...

Manpower Planning Models. 5. Optimization Models

DTIC Science & Technology

1975-10-01

aide 11 neceaaary and Identity by block number) Manpower Planning \\ \\ X Modelling Optimization 20. ABS emry and Identity by block number...notation resulting from the previous maximum M. We exploit the probabilistic interpretation of the flow process whenever it eases the exposi - tion

Connecticut nutmeg fuel cell bus project : first analysis report.

DOT National Transportation Integrated Search

2012-07-01

This report summarizes the experience and early results from a fuel cell bus demonstration funded by the Federal Transit Administra-tion (FTA) under the National Fuel Cell Bus Program (NFCBP). A team led by the Northeast Advanced Vehicle Consortium a...

Inflammatory Myopathies (Myositis)

MedlinePlus

... that can people with a virus called HTLV-1. Some myositis cases have followed infec- tion with the Coxsackie B ... only mildly elevated, or even normal. In some cases, the doctor may ask for ... muscle disease. One such antibody is called Jo-1 . The next ...

Heterogeneous Multi-Robot Cooperation

DTIC Science & Technology

1994-02-01

1992a) Maja Mataric. Designing emergent behaviors: From local interac- tions to collective intelligence. In J. Meyer, H. Roitblat , and S. Wilson, editors...1992] Lynne E. Parker. Adaptive action selection for cooperative agent teams. In Jean-Arcady Meyer, Herbert Roitblat . and Stewart Wilson. editors

Sistema Planeta-Satélite. Simulación orbital y potenciales gravitatorios

NASA Astrophysics Data System (ADS)

Medina, C.; Carrillo, M.

Se presenta un programa (desarrollado en Quick Basic 4.5) que simula, en tres dimensiones, el movimiento orbital de un satélite (o luna) alrededor de un planeta, al tiempo que calcula y grafica, en un plano, el potencial gravitatorio del sistema en función de la distancia al planeta. Para la simulación orbital, se emplea la matriz de transformación entre el sistema del planeta y el plano orbital. Para el cálculo y graficación del potencial se aplica un desarrollo en serie hasta el segundo orden, que da cuenta del efecto de achatamiento de los polos, en caso de que éste exista. Las longitudes de los ejes del planeta, la masa de éste y del satélite, sus tamaños aparentes, y los parámetros orbitales son introducidos por el usuario.

Nickel-Cadmium Battery Charger.

DTIC Science & Technology

1981-02-23

cells (3) 6 thermistors (4) 2 thermostats (5) 4 fuses (6) 3 hetter blankets 5a L . . .. _ . . . . . . .. . . . .. . . •. . . ,- NAI2C-92-i 45 g. There is...current measurement. q. Connector and wiring continuity testing. r. Provisions for soldering and welding connector and cell termina- tions. IV

Discrete Event Simulation of Distributed Team Communication

DTIC Science & Technology

2012-03-22

performs, and auditory information that is provided through multiple audio devices with speech response. This paper extends previous discrete event workload...2008, pg. 1) notes that “Architecture modeling furnishes abstrac- tions for use in managing complexities, allowing engineers to visualise the proposed

Medical Services: Ophthalmic Services

DTIC Science & Technology

1986-01-01

pair of half-eye spectacles. These spectacles will not be requested when the prescrip- tion requires either a myopic correction or astigmatic ...addition, and the size is usually 7mm. Minimum power for near vision is +1.50 diopters. (5) Lenticular lenses. These lenses are available under

Translations on USSR Resources, Number 763

DTIC Science & Technology

1978-01-06

supplying gas pumping units, pipes, and other equipment. 33 Shatlyk . Complex Gas Preparation Unit i 1 * Medvezhe. Gas Prepara- tion Block. Thus...handled satisfactorily. . Shatlyk . Turkmengazprom. Central Control Station Combine with Head Facilities Operating Room. By means of the Impul’s-2 remote

Near East/South Asia Report

DTIC Science & Technology

1985-04-04

equipment for automated bakeries began, and the investments utilized for this purpose totalled about 950,000 Egyptian pounds. This represents 65...lopment of society. So, what has he done? He has kept the system of elec- tion on the basis of adult franchise with, ofcourse, separate

Estimation of changes in insulation resistance with various design parameters of interdigitated wire loops.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Cordaro, Joseph Gabriel; Jones, Reese E.; Neel, Wiley Christopher

2015-09-01

In this report we explore the sensitivities of the insulation resistance between two loops of wire embedded in insulating materials with a simple, approximate model. We discuss limita- tions of the model and ideas for improvements.

Constitutive Modeling of the Thermomechanical Behavior of Rock Salt

NASA Astrophysics Data System (ADS)

Hampel, A.

2016-12-01

For the safe disposal of heat-generating high-level radioactive waste in rock salt formations, highly reliable numerical simulations of the thermomechanical and hydraulic behavior of the host rock have to be performed. Today, the huge progress in computer technology has enabled experts to calculate large and detailed computer models of underground repositories. However, the big ad­van­ces in computer technology are only beneficial when the applied material models and modeling procedures also meet very high demands. They result from the fact that the evaluation of the long-term integrity of the geological barrier requires an extra­polation of a highly nonlinear deforma­tion behavior to up to 1 million years, while the underlying experimental investigations in the laboratory or in situ have a duration of only days, weeks or at most some years. Several advanced constitutive models were developed and continuously improved to describe the dependences of various deformation phenomena in rock salt on in-situ relevant boundary conditions: transient and steady-state creep, evolution of damage and dilatancy in the DRZ, failure, post-failure behavior, residual strength, damage and dilatancy reduction, and healing. In a joint project series between 2004 and 2016, fundamental features of the advanced models were investigated and compared in detail with benchmark calculations. The study included procedures for the determination of characteristic salt-type-specific model parameter values and for the performance of numerical calculations of underground structures. Based on the results of this work and on specific laboratory investigations, the rock mechanical modeling is currently developed further in a common research project of experts from Germany and the United States. In this presentation, an overview about the work and results of the project series is given and the current joint research project WEIMOS is introduced.

Application of Tracer-Injection Techniques to Demonstrate Surface-Water and Ground-Water Interactions Between an Alpine Stream and the North Star Mine, Upper Animas River Watershed, Southwestern Colorado

USGS Publications Warehouse

Wright, Winfield G.; Moore, Bryan

2003-01-01

Tracer-injection studies were done in Belcher Gulch in the upper Animas River watershed, southwestern Colorado, to determine whether the alpine stream infiltrates into underground mine workings of the North Star Mine and other nearby mines in the area. The tracer-injection studies were designed to determine if and where along Belcher Gulch the stream infiltrates into the mine. Four separate tracer-injec-tion tests were done using lithium bromide (LiBr), optical brightener dye, and sodium chloride (NaCl) as tracer solu-tions. Two of the tracers (LiBr and dye) were injected con-tinuously for 24 hours, one of the NaCl tracers was injected continuously for 12 hours, and one of the NaCl tracers was injected over a period of 1 hour. Concentration increases of tracer constituents were detected in water discharging from the North Star Mine, substantiating a surface-water and ground-water connection between Belcher Gulch and the North Star Mine. Different timing and magnitude of tracer breakthroughs indicated multiple flow paths with different residence times from the stream to the mine. The Pittsburgh and Sultan Mines were thought to physically connect to the North Star Mine, but tracer breakthroughs were inconclusive in water from these mines. From the tracer-injection tests and synoptic measure-ments of streamflow discharge, a conceptual model was devel-oped for surface-water and ground-water interactions between Belcher Gulch and the North Star Mine. This information, combined with previous surface geophysical surveys indicat-ing the presence of subsurface voids, may assist with decision-making process for preventing infiltration and for the remedia-tion of mine drainage from these mines.

Peptide backbone orientation and dynamics in spider dragline silk and two-photon excitation in nuclear magnetic and quadrupole resonance

NASA Astrophysics Data System (ADS)

Eles, Philip Thomas

2005-07-01

In the first part of the dissertation, spider dragline silk is studied by solid state NMR techniques. The dependence of NMR frequency on molecular orientation is exploited using the DECODER experiment to determine the orientation of the protein backbone within the silk fibre. Practical experimental considerations require that the silk fibres be wound about a cylindrical axis perpendicular to the external magnetic field, complicating the reconstruction of the underlying orientation distribution and necess-itating the development of numerical techniques for this purpose. A two-component model of silk incorporating static b-sheets and polyglycine II helices adequately fits the NMR data and suggests that the b-sheets are well aligned along the silk axis (20 FWHM) while the helices are poorly aligned (68 FWHM). The effects of fibre strain, draw rate and hydration on orientation are measured. Measurements of the time-scale for peptide backbone motion indicate that when wet, a strain-dependent frac-tion of the poorly aligned component becomes mobile. This suggests a mechanism for the supercontraction of silk involving latent entropic springs that undergo a local strain-dependent phase transition, driving supercontraction. In the second part of this dissertation a novel method is developed for exciting NMR and nuclear quadrupole resonance (NQR) by rf irradiation at multiple frequencies that sum to (or differ by) the resonance frequency. This is fundamentally different than traditional NMR experiments where irradiation is applied on-resonance. With excitation outside the detection bandwidth, two-photon excitation allows for detection of free induction signals during excitation, completely eliminating receiver dead-time. A theoretical approach to describing two-photon excitation is developed based on average Hamiltonian theory. An intuition for two-photon excitation is gained by analogy to the coherent absorption of multiple photons requiring conservation of total energy and momentum. It is shown that two-photon excitation efficiency impro-ves when the two applied rf frequencies deviate from half-resonance. For two-photon NQR, it is shown that observable magnetization appears perpendicular to the excita-tion coil, requiring a second coil for detection, and that double quantum coherences are also generated. Several model systems and experimental geometries are used to demonstrate the peculiarities of two-photon excitation in NMR and NQR.

Flexible, Symmetry-Directed Approach To Assembling Protein Cages (Publisher’s Version Open Access)

DTIC Science & Technology

2016-08-01

widespread in nature and confers new biological properties. Engineered protein assemblies have potential applica- tions in nanotechnology and medicine...and nanotechnology in designing novel self-assembling proteins and adapting natural protein assem- blies for a range of applications broadly

Exsanguination Shock: The Next Frontier in Prevention of Battlefield Mortality

DTIC Science & Technology

2011-07-01

and various forms of organ support such as extracorporeal membrane oxygenation/continuous renal replacement therapy.19–23 Given this population of...patient died as a result of near exsanguina- tion but expired with adequate circulating blood volume and indicators of improving physiology

Impact of Incremental Sampling Methodology (ISM) on Metals Bioavailability

DTIC Science & Technology

2016-05-01

vent that resembles gastrointestinal fluids. This technique mimics diges- tion in the human gut, resulting in a means to understand the human health...25 4 Results ...62 Report Documentation Page ERDC TR-16-4 v Illustrations Figures 1 Comparison of prior digestion results for

U.S. EPA, Pesticide Product Label, , 06/26/1984

EPA Pesticide Factsheets

2011-04-21

... '~'lti',n :\\,r '-Dfl(. j fir. "; .. i'l! f)rl:\\"1tion. 'olJ'.}·lrs.a.Il-;: (1) ('l!lr'l-:lj': v"l', '[" Florid'l, Ll)lIi~iana. ~ T~""t~ (,n1':) , i/.' 11'': tn" !,qr"'" r \\., t',. "~jnl.' ',' l' j ...

Constructive Decision Theory

DTIC Science & Technology

2009-06-16

quantitative issues like price/earnings ratio to be relevant to the future value of Google, while the other considers astrological tables relevant to...Google’s future value. The DM who uses astrology might not understand price/earnings ratios (the no- tion is simply not in his vocabulary) and, similarly

Large Extremity Peripheral Nerve Repair

DTIC Science & Technology

2016-12-01

norbornene-2,3-dicarboxylic anhydride)/DMP-30 [2,4,6-tri (dimethylamino- methyl)phenol] (Tousimis Research Corp., Rock- ville, Md.); and then baked ...embedded in Epoxy resin (Tousimis Research Corpora- tion, Rockville, MD), and then baked overnight in a 60°C oven. From each proximal and distal

START and Stability

DTIC Science & Technology

1990-05-15

numerology and technology. not ideal, were at least tolerable. Somehow, in a Historically, scientific and engineering develop- world where armed conflict was...likelihood tion it engenders. A second point raised by the of decreasing the number of Blue’s retaliating same numerology is that a small decrease in vul

Organization and Functions: Field Operating Agencies of The Judge Advocate General

DTIC Science & Technology

1989-03-20

Criminal Investi- gation Command. (6) Army Military Command Contract Law Specialist Training Program, which trains officers in providing legal advice and...opera- tions in the functional areas of contract law . (7) Patents, Copyrights, and Trademarks Division, which— (a) Manages the administration, control

Fibres Optiques En Therapie Laser Au Contact Du Tissu

NASA Astrophysics Data System (ADS)

Lenz, P.; Sabben, G.; Lambert, R.; Berger, F.

1984-03-01

Les fibres en quartz, non protegees par un courant de gaz et placees au contact du tissu, peuvent etre utilisees pratiquement indefiniment grace a un "autonettoyage" et une "regenera-tion". Elles provoquent des lesions tissulaires semblables a celles obtenues avec les fibres conventionnelles.

MARSnet: Mission-aware Autonomous Radar Sensor Network for Future Combat Systems

DTIC Science & Technology

2007-05-03

34Parameter estimation for 3-parameter log-logistic distribution (LLD3) by Porne ", Parameter estimation for 3-parameter log-logistic distribu- tion...section V we physical security, air traffic control, traffic monitoring, andvidefaconu s cribedy. video surveillance, industrial automation etc. Each

Wood Anatomy of the Neotropical Sapotaceae: V. Calocarpum.

DTIC Science & Technology

1978-01-01

Because of this widespread distribution resulting from cultiva- tion , the original range is unknown but believed to be in the general area of southern...General: Wood light brown , rather drab and lusterless in appearance ; with little or no distinction between heartwood and sapwood . Growth rings

European Science Notes. Volume 39, Number 4.

DTIC Science & Technology

1985-04-01

segrega- papers seemed to me unusually signifi- tion, may significantly improve plasma- cant. W. Esser ( Kraftwerk Union, AG, sprayed zirconia TBC coatings...forged and heat- -.- ,.- equipment and methods both by MPA and treated vessel of the same alloy. At industry ( Kraftwerk Union AG [KWU]). present, the

Information Systems Plan.

DTIC Science & Technology

1985-04-01

increase in load factors. CURENUT YEARLY COST OF INFOR TION MANAGEK1KUT 0.04 FTE’s $876 DATA SET: Natural Resource (Management) VINAGE .QUIRRmuT OF...OF DATA SITS NEEDED TO SUPPORT IDENTIFIED DISTRICT PROCESSES PXOCESSz 53 - Provide Audio-Visual Services DATA SET: Equipment (Slide File) VINAG

Beyond Tomorrow - A Look at 2050 A.D.

DTIC Science & Technology

1992-04-15

347 Photochemical smog is created by a complex series of reac- tions between hydrocarbons released by fermenting yeast, evapo- rating dry cleaning...electricity, use mass transportation, walk and ride bicycles more, and use natural cleaners such as baking soda and vinegar instead of many commercial

Hyperpyrexia and Head Trauma.

DTIC Science & Technology

1984-03-09

thermoregula- tion, prostaglandins, norepinephrine, serotonin, carbamyl- choline , hypothalamus, preoptic area 2O ABSTRACT (Continue on reverse aide it...sodium salicylate (900 mg p.o.) or indo- methacin (10 mg/kg i.m.) had no effect on the pyrexia. This in- dicates that the CCh effect was caused by an

Scientists Urge DHS to Improve Bioterrorism Risk Assessment

DTIC Science & Technology

2008-01-01

ability of outcomes. These are not mere theoretical sug- gestions , but rather substantive tools and methods drawn from extensive research and experience...declassified for NRC publica - tion. 7. Rotz LD, Khan AS, Lillibridge SR, Ostroff SM, Hughes JM. Public health assessment of potential biological

Documentation of a spatial data-base management system for monitoring pesticide application in Washington

USGS Publications Warehouse

Schurr, K.M.; Cox, S.E.

1994-01-01

The Pesticide-Application Data-Base Management System was created as a demonstration project and was tested with data submitted to the Washington State Department of Agriculture by pesticide applicators from a small geographic area. These data were entered into the Department's relational data-base system and uploaded into the system's ARC/INFO files. Locations for pesticide applica- tions are assigned within the Public Land Survey System grids, and ARC/INFO programs in the Pesticide-Application Data-Base Management System can subdivide each survey section into sixteen idealized quarter-quarter sections for display map grids. The system provides data retrieval and geographic information system plotting capabilities from a menu of seven basic retrieval options. Additionally, ARC/INFO coverages can be created from the retrieved data when required for particular applications. The Pesticide-Application Data-Base Management System, or the general principles used in the system, could be adapted to other applica- tions or to other states.

Código para imageamento indireto de estrelas em sistemas binarios: simulação de variações elipsoidais e do perfil das linhas

NASA Astrophysics Data System (ADS)

Souza, T. R.; Baptista, R.

2003-08-01

As estrelas secundárias em variáveis cataclí smicas (VCs) e binárias-x de baixa massa (BXBMs) são cruciais para o entendimento da origem, evolução e comportamento destas binárias interagentes. Elas são estrelas magneticamente ativas submetidas a condições ambientais extremas [e.g., estão muito próximas de uma fonte quente e irradiante; têm rotação extremamente rápida e forma distorcida; estão perdendo massa a taxas de 10-8-10-10 M¤/ano] que contribuem para que suas propriedades sejam distintas das de estrelas de mesma massa na seqüência principal. Por outro lado, o padrão de irradiação na face da secundária fornece informação sobre a geometria das estruturas de acréscimo em torno da estrela primária. Assim, a obtenção de imagens da superfície destas estrelas é de grande interesse astrofísico. A Tomografia Roche usa as variações no perfil das linhas de emissão/absorção da estrela secundária em função da fase orbital para mapear a distribuição de brilho em sua superfície. Neste trabalho apresentamos os resultados iniciais do desenvolvimento de um programa para o mapeamento da distribuição de brilho na superfí cie das estrelas secundárias em VCs e BXBMs com técnicas de astro-tomografia. Presentemente temos em operação um código que simula as variações no perfil das linhas em conseqüência de efeito Doppler resultante da combinação de rotação e translação de uma estrela em forma de lobo de Roche em torno do centro de massa da binária, em função da distribuição de brilho na superfície desta estrela. O código igualmente produz a curva de luz resultante das variações de aspecto da estrela em função da fase orbital (variações elipsoidais).

The Military Utility of Understanding Adversary Culture

DTIC Science & Technology

2005-01-01

squelching of Iraqi freedom of speech . Many members of the Coalition Provi- sional Authority (CPA) and Combined Joint Task Force 7 felt that anticoali- tion...an Iraqi perception that Americans do not really support freedom of speech despite their claims to the contrary, reinforcing their view of Americans

Infectious Multiple Drug Resistance in the Enterobacteriaceae

DTIC Science & Technology

1978-09-01

charge, relative increase in resistance to lysis by sodium lauryl sulfate , EDTA and lysozyme as well as loss of sensitivity to phages Tl and T4. Other more...to find any significant publica- tion dealing with Shigella membrane proteins. Nonetheless by employing the sodium dodecyl sulfate (SDS

Iran - What Strategic Importance to the Free World?

DTIC Science & Technology

1966-04-08

still derived from three fundamen- tal factors: geographic position, strategic resources, and the political stability . It is within these areas...such a link does exist and is meaningful in our examina- tion into the political stability of present day Iran. There has never been a well defined

DELTA: An Expert System for Diesel Electric Locomotive Repair

DTIC Science & Technology

1984-06-01

Rules and Inference Mechanisms. AD-P003 943 The ACE (Automated Cable Expert) Exlpelient: Initial Evaluation of an Expert System for Preventive...tions. The first field prototype expert system, designated CATS -i (Computer-Aided Troubleshooting System - Version 1), was delivered in July 1983 and is

Platelet Function in Basset Hound Hereditary Thrombopathy.

DTIC Science & Technology

1986-01-01

4021, 1975. 20. DZANDU, J.K., DEH, M.E., BARRETT, D.L., AND WISE, G.E. Detec- tion of erythrocyte membrane proteins, sialoproteins , and lipids in the...Wise GE. Detection of erythrocyte membrane proteins, sialoproteins , and lipids in the same polyacrylamide gel using a double staining technique. Proc

Biological Effects of Nonionizing Electromagnetic Radiation. Volume III, Number 3.

DTIC Science & Technology

1979-03-01

experimental errors psychic healing, dowsing, and telepathy . In addi- inherent in these experiments , there was no dif- tion , tests of human sensitivity... synthetic and naturall y occurring cellular surface area of rat liver cells tha t phospholipid membranes were studied using Reman perturb water suggest

JPRS Report, China, Qiushi Seeking Truth, No. 15, 1 August 1989

DTIC Science & Technology

1989-09-15

cies and national policies, and continuously strengthen the various national organizations’ functions of political socialization of the citizens...Furthermore, they start man’s political socialization work with children’s educa- tion, beginning with the parents’ exemplary role and with good

Active Spread-Spectrum Steganalysis for Hidden Data Extraction

DTIC Science & Technology

2011-09-01

steganalysis. In particular, we aim to recover blindly se- cret data hidden in image hosts via (multi-signature) direct- sequence SS embedding [18]-[25...access (CDMA) communica- tion systems. Under the assumption that the embedded se- cret messages are independent identically distributed (i.i.d.) random

Future Approaches to the Economic Instrument of Power

DTIC Science & Technology

2006-01-01

plan in Iraq, and it echoed the millennial slogan, “It’s the economy, stupid!” Naomi Klein offers the poignant observa- tion that injecting greed...informal market entrepreneurs is one way to deal with informal markets. Staying economically competitive allows us to manufacture favorable tradeoffs

Translations on USSR Science and Technology, Physical Sciences and Technology, Number 17

DTIC Science & Technology

1977-08-23

the amelioration of soils, particularly alkali soils, regula- tion of the activity of the lymphatic and venous vessels, the physiology of digestion...strength of useful and harmful invertebrates, animal toxoplasmosis and rabid- ity, the physiology and biochemistry of microorganisms, the genetics and

The Government Assistance Center: A Vehicle for Transitioning to the Host Government

DTIC Science & Technology

2011-05-01

trained radio operators to operate on a 24-hour schedule. The communica- tions facility also creates and issues cards with Center radio frequencies...Successful but not Sufficient,” DIIS Report 2005: 6 (Copenhagen: Danish Institute for International Studies Report, 2005), 11. 10. Barbara

Sonic Hedgehog Signaling Promotes Tumor Growth

DTIC Science & Technology

2006-02-01

urogenital sinus mesenchyme and urothelium from normal or androgen-insen- sitive mice. Endocrinology 1993;132(6):2342–2350. 4. Cunha GR, Donjacour AA...706–714. 17. Cunha GR, Chung LW. Stromal-epithelial interactions–I. Induc- tion of prostatic phenotype in urothelium of testicular feminized (Tfm/y

U.S. Ratification of the Chemical Weapons Convention

DTIC Science & Technology

2011-12-01

safeguard trade secrets. Leading corpora- tions such as DuPont, Dow, and Monsanto also supported CWC ratification to improve the public image of the...represented large chemical companies such as Dow, DuPont, and Monsanto , was highly effective at contacting senators, putting out useful information, and

The Variance of Intraclass Correlations in Three and Four Level

ERIC Educational Resources Information Center

Hedges, Larry V.; Hedberg, Eric C.; Kuyper, Arend M.

2012-01-01

Intraclass correlations are used to summarize the variance decomposition in popula- tions with multilevel hierarchical structure. There has recently been considerable interest in estimating intraclass correlations from surveys or designed experiments to provide design parameters for planning future large-scale randomized experiments. The large…

Nominal Ocular Dazzle Distance (NODD)

DTIC Science & Technology

2015-02-23

retinal areas [14–16]. There is also a smaller contribution from the ocular wall [17], comprising the sclera and the iris . These internal scatter...retina, forma - tion and duration of afterimages in the case of Class 1 laser products, and disability glare arising from high-brightness light emitting

Navy and Marine Corps Medical News. Issue 24

DTIC Science & Technology

2008-12-19

for shipboard surgeries, including hernia repair and eye sur- gery. One of the mission’s most memorable surgeries involved two eight-year...the command in all BU- MED required and tracked popula- tion health metrics, except for one ( cervical cancer screening). Dick concluded, “My

The Utility of Handheld Programmable Calculators in Aircraft Life Cycle Cost Estimation.

DTIC Science & Technology

1982-09-01

are available for extended mem - ory, hardcopy printout, video interface, and special application software. Any calculator of comparable memory could...condi- tioning system. OG Total number of engine, air turbine motor (ATM) and auxiliary power unit (APU) driven generator/alternators. OHP Total number

Cements for Structural Concrete in Cold Regions.

DTIC Science & Technology

1977-10-01

ability to reduce the early evolu- tion of heat: slag and obsidian, pumicite and calcined shale, fly-ash , tuff and calcined diatomite , natural cement...and uncalcined diatomite . Variations in initial set times of cements can be controlled ‘cy varying the percentages of different cement mixtures . Wh it

Dynamic RGB-D Mapping

DTIC Science & Technology

2012-01-01

by David Lowe, extracts and matches visual features and their associ- ated descriptors between frames, it is described in sec- tion 3.1. The putative...Science and Systems, 2009. [25] J. Sturm, S. Magnenat, N. Engelhard, F. Pomerleau, F. Colas, W. Burgard, D. Cremers , and R. Siegwart, “Towards a benchmark

Encapsulation of Bacterial Spores in Nanoorganized Polyelectrolyte Shells (Postprint)

DTIC Science & Technology

2009-05-27

Nanoorganized polyelectrolyte shells have already found applica- tions in drug microencapsulation as a result of the tunable properties of the...polyelectrolyte shell.19 The same LbL technology allowed the introduction of enzymatic activity onto yeast cell shells in order to promote the conversion of

Melatonin, Light and Circadian Cycles

DTIC Science & Technology

1989-12-25

Neurosci Abstr 14:848. Fanget, F., Claustrat, B., Dalery, J., Brun, J., Terra , J-L, Marie-Cardine, M., and Guyotot, J. (1989) Nocturnal plasma melatonin...5- methoxytryptamine, a novel melatonin antagonist: effects on sexual matura - tion of the male and female rat and on uestrous cycles of the female rat

Synthesis and Processing of Ultra-High Temperature Metal Carbide and Metal Diboride Nanocomposite Materials

DTIC Science & Technology

2008-04-15

cellulose acetate polymers, and diols. Common sol- uble metal/metal oxide-bearing materials are metal alkoxides, metal diketonates, and metal ... carboxylates . Metal-organic compounds are usually subjected to hydrolysis and condensa- tion reactions to produce polymeric or colloidal metal-oxide

The Magic Background of Pearl Harbor. Volume 3. Appendix

DTIC Science & Technology

1977-01-01

diplomatic relations and the opening of a warfare of commerce destruc- tion. C a JITSU TO Trans. 1-30-45 No. 406 Washington (Nomura) Tokyo September...icles.) Part 2. 2.Inthesummeroflastyear,FUJI-Elect!i,corderedfromSIEMENSfor(? JU ?)use10 automatic pilot compasses and JINKOSHIKOKra. However, exchange

IDENTIFICATION OF SOURCES OF GROUND-WATER SALINIZA- TION USING GEOCHEMICAL TECHNIQUES

EPA Science Inventory

This report deals with salt-water sources that commonly mix and deteriorate fresh ground water. It reviews characteristics of salt-water sources and geochemical techniques that can be used to identify these sources after mixing has occurred. The report is designed to assist inves...

Military Interventions in Sierra Leone: Lessons from a Failed State

DTIC Science & Technology

2008-01-01

enslaved from Sierra Leone were shipped to the Caribbean and Brazil . This heinous trade lasted for over 100 years. Competing religious...Bana. Map 6. Operation BARRAS area of operations. 67 Magbeni and Gberi Bana were surrounded by dense jungle vegeta­ tion, mangrove swamps, murky

Swedish Defence Research Abstracts 1979/80-2 (Froe Foersvars Forsknings Referat 1979/80-2).

DTIC Science & Technology

1980-07-01

8217the relaxa- tion response’, and its meaning is discussed. In conclusion the following mental training methods are broadly described: autogenous ...training, muscular relaxation training, self-hypnosis, transcendental meditation and Zen meditation . Each description contains a general section on the

Are All Highly Malignant Cancer Cells Identical?

DTIC Science & Technology

1979-01-01

embryo cells or even the original fertilized ovum. If this speculation has validity, the carcinogenesis and differentiation have the same destinies but...whose activity leads to the suppression of the transcrip- tion of the genes responsible for the unique set of embryo -cancer proteins and whose mutation

Forecast first: An argument for groundwater modeling in reverse

USGS Publications Warehouse

White, Jeremy

2017-01-01

Numerical groundwater models are important compo-nents of groundwater analyses that are used for makingcritical decisions related to the management of ground-water resources. In this support role, models are oftenconstructed to serve a specific purpose that is to provideinsights, through simulation, related to a specific func-tion of a complex aquifer system that cannot be observeddirectly (Anderson et al. 2015).For any given modeling analysis, several modelinput datasets must be prepared. Herein, the datasetsrequired to simulate the historical conditions are referredto as the calibration model, and the datasets requiredto simulate the model’s purpose are referred to as theforecast model. Future groundwater conditions or otherunobserved aspects of the groundwater system may besimulated by the forecast model—the outputs of interestfrom the forecast model represent the purpose of themodeling analysis. Unfortunately, the forecast model,needed to simulate the purpose of the modeling analysis,is seemingly an afterthought—calibration is where themajority of time and effort are expended and calibrationis usually completed before the forecast model is evenconstructed. Herein, I am proposing a new groundwatermodeling workflow, referred to as the “forecast first”workflow, where the forecast model is constructed at anearlier stage in the modeling analysis and the outputsof interest from the forecast model are evaluated duringsubsequent tasks in the workflow.

Strain-dependent Damage Evolution and Velocity Reduction in Fault Zones Induced by Earthquake Rupture

NASA Astrophysics Data System (ADS)

Zhong, J.; Duan, B.

2009-12-01

Low-velocity fault zones (LVFZs) with reduced seismic velocities relative to the surrounding wall rocks are widely observed around active faults. The presence of such a zone will affect rupture propagation, near-field ground motion, and off-fault damage in subsequent earth-quakes. In this study, we quantify the reduction of seismic velocities caused by dynamic rup-ture on a 2D planar fault surrounded by a low-velocity fault zone. First, we implement the damage rheology (Lyakhovsky et al. 1997) in EQdyna (Duan and Oglesby 2006), an explicit dynamic finite element code. We further extend this damage rheology model to include the dependence of strains on crack density. Then, we quantify off-fault continuum damage distribution and velocity reduction induced by earthquake rupture with the presence of a preexisting LVFZ. We find that the presence of a LVFZ affects the tempo-spatial distribu-tions of off-fault damage. Because lack of constraint in some damage parameters, we further investigate the relationship between velocity reduction and these damage prameters by a large suite of numerical simulations. Slip velocity, slip, and near-field ground motions computed from damage rheology are also compared with those from off-fault elastic or elastoplastic responses. We find that the reduction in elastic moduli during dynamic rupture has profound impact on these quantities.

Distributed Hypothesis Testing in Distributed Sensor Networks

DTIC Science & Technology

1984-07-01

single structure(, object Is Itself an important task in many applica- tions. At least at he conceptual level, there is no dlffculty in treating targets...First, we need to provide a modeling framwork within which the models of the various nodes, constructed as discussed above, can be embedded. It is within

Neuroprotective Strategies after Repetitive Mild Traumatic Brain Injury

DTIC Science & Technology

2011-06-01

applica- tions are beyond the scope of this review, it should be noted that certain drugs, fever and respiratory ailments limit clinical application of...observed no evidence of hemorrhage early after injury but did observe the presence of subtle petechial hemorrhages at 7 days post-injury (Fig. 7

National Intelligence Survey. Spain. Section 23. Weather and Climate

DTIC Science & Technology

1963-07-01

on to successor organiza- tions. In 1934 the meteorological services were organized as the Servicio Meteorolögico Nacional (S.M.N.). Spain became a...service’s communications system for collecting data relies heavily on tele- phone, telegraph, and CW-radio broadcasts. A micro -wave radio teletype

JPRS Report, Soviet Union, Military Affairs

DTIC Science & Technology

1990-10-31

and for leaders of tions or arrests by the militia, drug addicts , alcoholics, soviet and State organs, enterprises, organizations, insti- etc. Would it...O.K. for a trial where the black whale -like humpbacks of the nuclear repairs erofint asand av teO. a trial submarines float high above the piers, are

On the Job With Emotional Intelligence

DTIC Science & Technology

2013-04-01

stimulates the amygdala , referred to as an “ amygdala hijack ,” a term coined by Daniel Coleman in his 1996 book Emotional Intelligence, the emotion is...because they stimulate the amygdala , an area of the brain responsible for intense emotional reac- tions. The amygdala is responsible for the “fight or

Antiviral Activity of a Small-Molecule Inhibitor of Filovirus Infection

DTIC Science & Technology

2010-05-01

one or two heterocyclic aromatic struc- tures (i.e., indole, benzofuran, benzimidazole , or benzothiophene) connected via an aliphatic linker or...tion of compound hits by high-throughput analysis. Using a ZEBOV-GFP assay, 2-(2-(5-(amino(imino)methyl)-1-benzofu- ran-2-yl)vinyl)-1H- benzimidazole -5

Photopiezoelectric Composites of Azobenzene-Functionalized Polyimides and Polyvinylidene Fluoride (Postprint)

DTIC Science & Technology

2014-10-01

equilib- rium condition, exposure of the undrawn and drawn azo- BPA -6FDI-100 material to sequenced irradiation at 0.25 Hz generates signifi cant changes...crossed polarizers, showing green birefringence color. c) Photogenerated stress with sequenced light irradia- tion of undrawn and drawn azo- BPA -6FDI-100

U.S. EPA, Pesticide Product Label, GUARDCO MINT DISINFECTANT, 10/07/1983

EPA Pesticide Factsheets

2011-04-19

... I,., III ( ,I ~t·"f ( • /''1 !. 1 In!HI:.j'.l:tll y flu~') C ies or s.kln \\" .. Ith Oll~ot)! of \\· ... tl'l ftjr at '(>;.15t lJ! ... lIub'ect to car-cell.tion !~ ftCcordallce with FlU'" IIEC. ...

78 FR 45495 - Conejos Peak Ranger District, Rio Grande National Forest; Colorado; Cumbres Vegetation Management...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-07-29

...; Colorado; Cumbres Vegetation Management Project AGENCY : Forest Service, USDA. ACTION: Notice of intent to... to 719-852-6250, with subject Cumbres Vegetation Management Project. FOR FURTHER INFORMATION CONTACT... Vegeta tion Management Project is move toward achieving long-term desired conditions described in the...

Leadership in the Organization Context: A Conceptual Approach and Its Applications

DTIC Science & Technology

1986-02-01

Tornow & Pinto, 1976). Leadership Identification One potential application would lie in the identification of indi- viduals who are most likely to...tions, 4, 3-38. Tornow , W. W., & Pinto, P. R. (1976). The development of a managerial job taxonomy: A system for describing, classifying and

Exploring the Local Milky Way: M Dwarfs as Tracers of Galactic Populations

DTIC Science & Technology

2007-12-01

dark matter cos- mology have sought to recreate the infant Galaxy, tracing the formation and collapse of baryons within the dark matter halo (Brook...with dark matter halo and interstellar material contri- butions, and the potential is computed using the Poisson equa- tion. Stars are then evolved

JPRS Report, Proliferation Issues

DTIC Science & Technology

1992-08-12

the North accept bilateral inspections in addition to IAEA inspec- ["News analysis" by staff reporter Kim Hye - won ] tions in order to clear...in the same wayJune 1992. The United and the European Community that we worked together to achieve world park status forhave each decided to offer $25

US Policies toward Tehran: Redefining Counterproliferation for the Twenty-First Century

DTIC Science & Technology

2011-01-01

latent weapons power, purposefully not constructing an explicit, fully weaponized arsenal, but rather cultivating and maintaining a hedged nuclear...decisively dropping the popular but empirically dubious assump­ tion that Iran’s primary intent is to put mushroom clouds over Tel Aviv and Washington as

Systems Management of Air Force Standard Communications-Computer systems: There is a Better Way

DTIC Science & Technology

1988-04-01

upgrade or replacement of systems. AFR 700-6, Information Systems Operation Management , AFR 700-7, Information Processing Center Opera- tions Management...and AFR 700-8, Telephone Systems Operation Management provide USAF guidance, policy and procedures governing this phase. 4 2. 800-Series Regulations

Joint Force Quarterly. Issue 43, 4th Quarter 2006

DTIC Science & Technology

2006-01-01

plan in Iraq, and it echoed the millennial slogan, “It’s the economy, stupid!” Naomi Klein offers the poignant observa- tion that injecting greed and...closer study. Alternatively, creating a two-tier market system that makes the cost of business unsus- tainable for informal market entrepreneurs is one

ASSESSMENT PROTOCOLS - DURABILITY OF PERFORMANCE OF A HOME RADON REDUCTION SYSTEM FOR SUB-SLAB DEPRESSURIZA- TION SYSTEMS

EPA Science Inventory

This handbook contains protocols that compare the immediate performance of subslab depressurization (SSD) mitigation system with performance months or years later. These protocols provide a methodology to test SSD radon mitigation systems in situ to determine long-term performanc...

Juvenile Pacific Salmon in Puget Sound

DTIC Science & Technology

2006-06-01

This means the fish must be able to osmoregulate in saltwater, where condi- tions are clearly much different from what they left in fresh- water...17 References Clarke, W.C. and T. Hirano. 1995. Osmoregulation . Pages 319-377 in C. Groot, L. Margolis and W.C. Clarke (eds.). Physiological Ecology

Manufacturing Methods and Technology Program Automatic In-Process Microcircuit Evaluation.

DTIC Science & Technology

1978-09-01

illumination system consists of an illuminati on controlle r , three illumination power- supplies , and three illuminator housings . The illumination... illuminati on level. - - The main power (115 V , 60 Hz) for the power-supplies is derived from the power distribu- tion panel. There are two switches In the

Ice Formation in Frequently Transited Navigation Channels

DTIC Science & Technology

1990-12-01

measurements made at different sec- The propellers were driven by a 186-W electric tions in the monitoring area. The measurements motor, which is visible in...321. Navigation ConferenceandExhibitionattheFinlandia Mellor, M., Vance, G.P., Wuebben, J.C. and G.E. Hall, Helsinki, Finland, p. 1021-103E Frankenstein

Cerebral Salt-Wasting Associated with the Guillain-Barre Syndrome

DTIC Science & Technology

1965-07-01

their pa- water retention increases the glomerular filtra- tient was infused into a patient with diabetes tion rate and suppresses the secretion of al... insipidus and produced a transient decrease in dosterone, either of which might lead to free water clearance and a rise in urine increased sodium output

Biological Effects of Nonionizing Electromagnetic Radiation. Volume IV. Number 4.

DTIC Science & Technology

1980-06-01

absorbed power levels. The effect of EMR on CCAs will be evaluated using the following parameters: beat rate, maximum diastolic potential, action 0591...cerebral forma- superior olive were similar to those evoked by tions examined. The swelling of the cytoplasm was acoustic pulses presented binaurally at a

Executive Jobs and Executive Continuity, ’An Investigation with Special Reference to Swiss Army Instructors’,

DTIC Science & Technology

1981-12-01

people. This requires accepting different ways of doing things; evaluating worker potential; and seeina the consequences beyond the results. (6) Managing ... innovation . This includes knowing how to anticipate innovation and how to make innovation economically effective. This implies seeing innova- tion as

Medical Surveillance Monthly Report, Volume 20, Number 8

DTIC Science & Technology

2013-08-01

primary diagnostic position, 99 (55.6%) had secondary diagnoses indica- tive of infections (e.g., streptococcus infec- tion, cellulitis , UTI) (data not...respiratory infections (e.g., pneumonia), and skin infections (e.g., cellulitis ), all of which are risk factors for septicemia.7,12,13 It is not clear why

A Novel Approach to Chemical Communications

DTIC Science & Technology

2010-06-17

of droplets in the microfludic circuit. Figure 4. Generation of droplets in the microfludic circuit. Figure 5. Space-time plots showing anti-phase... microfludic circuit. Final Report W911NF-07-1-0639 Page 11 Table 2. A sampling of microfluidics experiments Fluid1 for drop genera- tion Fluid2

RAND Review. Volume 28, Number 2, Summer 2004

DTIC Science & Technology

2004-01-01

received an average of 23 percent district of Tijuana , more for unprotected sex (and up to 46 percent more if Mexico, displays the workers were judged...management. "Improvement in access to medica - eral ways, according to the reports. Vulnerable elders tions without quality assurance may result in a mere

Planning and Operational Considerations for Units Utilizing Military Working Dogs

DTIC Science & Technology

2009-01-01

be toxic to dogs include chocolate (espe- cially dark chocolate ), antifreeze, prescription medica- tions, over-the-counter medications (e.g., acetamin...The Sanford Guide to Antimicrobial Therapy , 38d Edition, (pg. 46).11. 11. Army Regulation 40–905 (SECNAVINST 6401.1B, AFI 48– 131), Medical

COMPUTATIONAL INVESTIGATION OF CHEMICAL REACTIVITY IN RELATION TO BIOACTIVATION AND TOXICITY ACROSS CLASSES OF HALOORGANICS: BROMINATION VS. CHLORINATION

EPA Science Inventory

COMPUTATIONAL INVESTIGATION OF CHEMICAL REACTIVITY IN RELATION TO BIOACTIV A TION AND TOXICITY ACROSS CLASSES OF HALOORGANICS: BROMINATION VS. CHLORINATION.

Halogenation is a common feature of many classes of environmental contaminants, and often plays a crucial role in po...

Translations on Eastern Europe Political, Sociological, and Military Affairs, Number 1332

DTIC Science & Technology

1976-12-13

building sites of the big projects, in some work that we have seen at the exposi - tions on the navy or air force, and so forth, were pale and anemic...countries by the fact that we will have ab - solutely no glaring poverty, nowhere. 1015 - TB - CSO: 2600

Guidelines for Managing Vegetation on Earth-Covered Magazines Within the U.S. Army Materiel Command

DTIC Science & Technology

1994-05-01

Plant Basil Kirby, Pest Controller, Letterkenny Army Depot Ken Davis, Safety Office, Depot Systt., Command Robert Klein, Army Materiel Command Field...refertilization, herbicides, tion techniques; this should be done by visiting the plant growth regulators, pesticides , mowing or site, talking to the

A Crew Exposure Study. Volume I. Offshore.

DTIC Science & Technology

1982-03-15

in Percutaneous Penetra- tion in Man - Pesticides ," Archives of Environmental Health, Vol. 23, pp 208-211, 1971. 20. Bartek, M. J., et al., "Skin...OTO FI RCABNEISOS UT iA- 0 - . . -- • G. DISCHARGING OF HAZARDOUS WASTES FROM PLATFORMS 1. Middleditch, Brian S., Basile , Brenda, and Chang, Evelyn S

Imaging Near-Earth Electron Densities Using Thomson Scattering

DTIC Science & Technology

2009-01-15

geocentric solar magnetospheric (GSM) coordinates1. TECs were initially computed from a viewing loca- tion at the Sun-Earth L1 Lagrange point2 for both...further find that an elliptical Earth orbit (apogee ~30 RE) is a suitable lower- cost option for a demonstration mission. 5. SIMULATED OBSERVATIONS We

Building Maritime Security in Southeast Asia: Outsiders Not Welcome?

DTIC Science & Technology

2008-01-01

Perspective/ RSIS0182007.pdf. 4. See Catherine Zara Raymond, “The Malacca Straits and the Threat of Maritime Terror- ism,” Power and Interest News...Catherine Zara Raymond (Singapore: World Scientific, 2005), p. 263. 39. Arthur Stein, “Coordination and Collabora- tion: Regimes in an Anarchic World

Naval War College Review. Volume 61, Number 1, Winter 2008

DTIC Science & Technology

2008-01-01

publications/Perspective/ RSIS0182007.pdf. 4. See Catherine Zara Raymond, “The Malacca Straits and the Threat of Maritime Terror- ism,” Power and...Joshua Ho and Catherine Zara Raymond (Singapore: World Scientific, 2005), p. 263. 39. Arthur Stein, “Coordination and Collabora- tion: Regimes in an

Joint Force Quarterly. Number 23, Autumn/Winter 1999-2000

DTIC Science & Technology

2000-03-01

for JFCOM evolves, it might slip into a Eurocentric cookie cutter mind- set that is not adaptable to every theater. That is certainly true when applying...tions by simple majority. Eisenhower considered the latter provision “a small hole in the dough - nut” because he was authorized to transfer major

Population biology of the forest pathogen Heterbasidion annosum:implications for forest management

Treesearch

M. Garbelotto; W.J. Otrosina; F.W. Cobb; T.D. Bruns

1998-01-01

Heterobasidion annosumranks as one of the most destructive pathogens in North American coniferous forests. Understanding the popula­tion biology of this fungus may facilitate un­derstanding not only the basic biology of the organism, but also the general patterns of disease development,...

Operando Raman Micro Spectroscopy of Polymer Electrolyte Fuel Cells

DTIC Science & Technology

2016-01-16

understanding of the processes such as oxygen reduc- tion reaction (ORR), carbon corrosion, and catalysis process of ORR in PEMFCs catalyzed by Pt or...Journal of Membrane Science, 392, 88 (2012). 46. F. Jaouen, F. Charreteur, and J. P. Dodelet, “Fe-based catalysts for oxygen reduction in PEMFCs

Methods of Cost Reduction for United States Coast Guard Telephone Systems.

DTIC Science & Technology

1981-03-01

System (’FTS) for a single low utilization command is questionable. Small FAX machines such as EXXON’s QWIP /FAX can be purchased at approxi- mately...unsatisfactory operating condi- tion. Electrical faults, such as leakage or poor insulation, noise induction, crosstalk, or poor transmission

Myasthenia Gravis, Lambert-Eaton Myasthenic Syndrome & Congenital Myasthenic Syndromes

MedlinePlus

... make VGCC, triggering the immune system to make anti-VGCC antibodies. The trigger for LEMS without cancer is unknown. What are the symptoms of LEMS? ... after exer- tion. (It’s thought that, with repeated activity, calcium gradually ... urgency. LEMS with cancer has its onset in adulthood, but LEMS without ...

Publications Management Program

DTIC Science & Technology

2002-05-06

74 3.61. Typography and Design ...6.3.4. 3.61. Typography and Design . 3.61.1. Illustrations. Illustrate periodicals only to reinforce the subject matter and show people doing their...This includes information on designing and formatting publica- tions as well as graphics requirements. 4.2.2.3. Lead MAJCOMs will retain

Non-destructive Techniques for Classifying Aircraft Coating Degradation

DTIC Science & Technology

2015-03-26

model is bidirectional reflectance distribution func- tions ( BRDF ) which describes how much radiation is reflected for each solid angle and each...incident angle. An intermediate model between ideal reflectors and BRDF is to assume all reflectance is a combination of diffuse and specular reflectance...19 K-Fold Cross Validation

Testing Experimental Compounds against American Cutaneous and Mucocutaneous Leishmaniasis

DTIC Science & Technology

1982-06-01

synthesize large amounts of plasma membrane ergosterol in serum-free media (26). Ketoconazole and miconazole actively disrupt ergosterol synthesis in a...walls cross- * react with L. donovani (40), it was thought that immunostimula- tion of a htst with BCG prior to infection with L. mexicana ama- zonensis

National Food Strategy: Kenya’s Approach to the Problem of Feeding the Nation

DTIC Science & Technology

1990-02-01

intercropping, agroforestry , preven- tion of soil erosion and rural afforestation. The new Arid and Semi Arid Lands Authority (ASAL) will establish irrigation...international organizations such as the International Council for Research in Agroforestry (ICRAF) has been beneficial. 13 To preserve Kenya’s forests, the

Parameter Estimation Versus Homogenization Techniques in Time-Domain Characterization of Composite Dielectrics

DTIC Science & Technology

2006-08-22

H. T. Banks, V. A. Bokil, D. Cioranescu, N. L. Gibson, G. Griso, and B. Miara , Homogeniza- tion of periodically varying coefficients in...Terahertz signals, Nonlinear Analysis: Real World Applications, 6 (2005), 381–416. [6] A. Bossavit, G. Griso, and B. Miara , Modeling of periodic

Techniques to Remotely Identify and Evaluate Electrical Power System Infrastructure

DTIC Science & Technology

2006-02-01

bursts is quantified in a “ macroburst ”: The totality of all transients (arcs) produced during a single switch opera- tion is termed a macroburst . A... macroburst can be characterized in terms of its duration in time, the total number of field transients produced, the am- plitude variation between

Analysis of a Delayed Delta Modulator.

DTIC Science & Technology

1983-05-01

parallels that of Janardhanan [10] for DPCM with matched integra- tion of stationary first-order Gauss-Markov input. In Subsection A the limiting...181, 1978. [10] JANARDHANAN , E., "Differential PCM -ystems", IEEE Trans. Conmmun., vol. Com-27, pp. 82-93, 1979. [111 KANTOROVICI, L.V. and KRYLOV, V.I

Dynamic Properties of Electronic Trapping Centers at the Si-SiO2 Interface.

DTIC Science & Technology

1983-05-01

Variation of i,. %.rhich is the sum of the majorty and minoritl) the integration is over the semiconductor bandgap. The for- carrier emision and capture...majority carriers, and the dashed line is for majority,- counted for, will yield erroneous interface-state distribu- carrier emision onl) tions

Inference on the Ranks of the Canonical Correlation Matrices for Elliptically Symmetric Populations.

DTIC Science & Technology

1985-05-01

robust estimates of the covariance matrix, the reader is referred to Devlin, Gnanadesikan and Kettenring (1975) and Maronna (1976). Murihead and...contoured distributions. J. Multivariate Anal. 11, 368-385. 6. DEVLIN, S.J. GNANADESIKAN , R. and KETTENRING, J. (1975). Robust estima- tion and outlier

Meaningful Real-Time Graphics Workstation Performance Measurements

DTIC Science & Technology

1988-11-01

alike can effectively operate the program with little or no help from user’s manuals or other users. A thorough and efficient design of command line...Specifica- tions, San Jose, California, 1988. 4. Apgar , Brian, Bersack, Bret and Mammen, Abraham, "A Display System for the Stellarr m Graphics

JPRS Report, East Asia Southeast Asia

DTIC Science & Technology

1987-06-11

tive and prosecution aspects as essential elements of the solution. "Preventive" would refer to reduc- ing red tape and too much discre- tion...Youth Union in Colleges 29 9332/9835 CSO: 4209/417 101 ,„«„««T„ VIETNAM CCONOMIC NGUYEN CO THACH ADMITS TO ECNOMIC MISTAKES Stockholm SVENSKA

A Situation Analysis Toolbox for Course of Action Evaluation

DTIC Science & Technology

2011-06-01

Presented at the 16th International Command and Control Research and Technology Symposium (ICCRTS 2011), Qu ?c City, Qu ?c, Canada, June 21-23, 2011...conference on Informa- tion Fusion, Edinburgh, Scotland, July 2010. [2] Mica R. Endsley and Daniel J. Garland. Situation Awareness Analysis and Measurement

An Empirical Study to Enhance the Reenlistment Process of Civilian Personnel with Prior Military Service.

DTIC Science & Technology

1985-04-01

Analysis. Beverly Hills, CA: Sage Publica- tions, 1980. Kotler , P. Principles of Marketing. Englewood Cliffs, NJ: Prentice- Hall, Inc., 1980...02940 Mr. Philip Bernard B-K Dynamics, Inc. 15825 Shady Grove Road Rockville, MD 20850 Dr. Bruce M. Meglino College of Business Administration

An Application of Subjective Probabilities to the Problem of Uncertainty in Cost Analysis

DTIC Science & Technology

1975-11-01

ACKNOWLEDGMENTS The authors are grateful to Mr. Joseph T. Kammerer, Director of the Resource Analysis Group, for the sugges- tion and encouragement to...A of this paper. ’Several other individuals offered helpful suggestions during the course of this research, particularly Mr. Carl Wilbourn of the

A Complex Systems View of Sepsis: Implications for Nursing

DTIC Science & Technology

2013-02-01

resuscitation resulting from disease progres- sion and requiring vasopressor therapy.8 Ultimately, the onset of multiple organ failure is the result of loss of...Kattwinkel J, et al. Mortality reduc- tion by heart rate characteristicmonitoring in very lowbirthweight neonates : a randomized trial. J Pediatr. 2011;159(6

Ocean Data Quality Control

DTIC Science & Technology

2011-11-18

the aero- sol at the coincident time and location of the satellite SST retrievals. This informa- tion is available in the daytime for the anti-solar...are of the same form, such as probabilities or standard normal deviates. A quality control decision-making algorithm in use at the U.S. Navy oceano

Software Engineering in Ada

DTIC Science & Technology

1988-03-22

and es out of the frame-you DO NOT re- raise the exception. t mru to the point where the excep- tion was raised. You can be cre- UNUUAUY ative with...type we the tesis for equality and inequality and the assignment operation. unless the type is limited.. in which case no operations awe implicitly

Progesterone in the Field-Forward Treatment of Traumatic Brain Injury

DTIC Science & Technology

2009-11-01

After 10 min, 37 mL of acetone was added and the solution was warmed to ambient temperature. Water (25 mL) was added, and the solvent volume was...created. Concentra- tions were determined by photometric analysis. Cerebral Edema Assay. Surgery. Contusions of the medio - frontal cortex (MFC) were

A Training Program in Breast Cancer Research Using NMR Techniques

DTIC Science & Technology

2006-07-01

subtlety, and location. Both the cranio-caudal (CC) and medio -lateral oblique (MLO) projec- tion views were used. The films were digitized with a com...thermal optical monitoring system used to monitor animals’ skin temperature, ambient temper- ature, and wall temperature of the device. For imaging

Choosing War: The Decision to Invade Iraq and Its Aftermath

DTIC Science & Technology

2008-04-01

Ballard, a recent Iraq veteran, all contributed greatly. From the Institute for National Strategic Studies, Dr. Christopher J. Lamb , Dr. James A. Schear...reforms of 1986 were stewing for many years and were only enacted after a series of disappointing opera- tions in which the obvious national failure was

RADIUM REMOVAL FROM WATER MANGANESE DIOXIDE ADSORP- TION AND DIATOMACEOUS EARTH FILTRATION

EPA Science Inventory

The study reveals that radium adsorption onto precipitated MnO2 followed by diatomaceous earth (DE) filtration is a very effective treatment process for radium-contaminated water. Radium removals in the range of 80% to 97% were observed for performed MnO2 feed concentrations of 0...

Resource-Bounded Information Gathering for Correlation Clustering

DTIC Science & Technology

2007-01-01

5], budgeted learning, [4], and active learning , for example, [3]. 3 Acknowledgments We thank Avrim Blum, Katrina Ligett, Chris Pal, Sridhar...2007 3. N. Roy, A. McCallum, Toward Optimal Active Learning through Sampling Estima- tion of Error Reduction, Proc. of 18th ICML, 2001 4. A. Kapoor, R

An Assessment of Naval and Marine Aviation Students’ Attitudes Toward Women with Specific Reference to Naval Aviation.

DTIC Science & Technology

1977-11-01

past and present discriminatory practices against women in legislation, in occupational restric- tions, in educational policies, and in social ... relationships . The objective attempts to measure attitudes toward women have dealt largely with roles of women within specific occupational groups. For example

Thermal-Hydraulic-Mechanical (THM) Coupled Simulation of a Generic Site for Disposal of High Level Nuclear Waste in Claystone in Germany: Exemplary Proof of the Integrity of the Geological Barrier

NASA Astrophysics Data System (ADS)

Massmann, J.; Ziefle, G.; Jobmann, M.

2016-12-01

Claystone is investigated as a potential host rock for the disposal of high level nuclear waste (HLW). In Germany, DBE TECHNOLOGY GmbH, the BGR and the "Gesellschaft für Anlagen- und Reaktorsicherheit (GRS)" are developing an integrated methodology for safety assessment within the R&D project "ANSICHT". One part herein is the demonstration of integrity of the geological barrier to ensure safe containment of radionuclides over 1 million years. The mechanical excavation of an underground repository, the ex­po­si­tion of claystone to at­mos­pheric air, the insertion of backfill, buffer, sealing and supporting material as well as the deposition of heat producing waste constitute a sig­nif­i­cant disturbance of the underground system. A complex interacting scheme of thermal, hydraulic and mechanical (THM) processes can be expected. In this work, the finite element software OpenGeoSys, main­ly de­vel­oped at the "Helmholtz Centre for Environmental Research GmbH (UFZ)", is used to simulate and evaluate several THM coupled effects in the repository surroundings up to the surface over a time span of 1 million years. The numerical setup is based on two generic geological models inspired by the representative geology of potentially suitable regions in North- and South Germany. The results give an insight into the evolution of temperature, pore pressure, stresses as well as deformation and enables statements concerning the extent of the significantly influenced area. One important effect among others is the temperature driven change in the densities of the solid and liquid phase and its influence on the stress field. In a further step, integrity criteria have been quantified, based on specifications of the German federal ministry of the environment. The exemplary numerical evaluation of these criteria demonstrates, how numerical simulations can be used to prove the integrity of the geological barrier and detect potential vulnerabilities. Fig.: Calculated zone of increased temperature (blue bubble) around a generic repository of HLW in a representative geological setting, 1000 years after emplacement of HLW

The Fizeau Interferometer Testbed

DTIC Science & Technology

2003-03-01

Institute, Jay Rajagopal and Ron Allen; and at the CfA, Margarita Karovska , for their contribu- tions to the development of the testbed and the Stellar...2000. [2] K.G. Carpenter, C.J. Schrijver, R.G. Lyon, L.G. Mundy, R.J. Allen, J.T. Armstrong, W.C. Danchi, M. Karovska , J. Marzouk, L.M. Mazzuca, D

Identifying Image Manipulation Software from Image Features

DTIC Science & Technology

2015-03-26

obp/ui/#iso:std:iso:ts:22028:-3:ed-2: v1:en. 24. Popescu, Alin and Hany Farid. “Exposing digital forgeries by detecting traces of resampling”. Signal...Processing, IEEE Transactions on, 53(2):758–767, 2005. 25. Popescu, Alin and Hany Farid. “Statistical tools for digital forensics”. Informa- tion

NRL Fact Book 2010

DTIC Science & Technology

2010-01-01

service) High assurance software Distributed network-based battle management High performance computing supporting uniform and nonuniform memory...VNIR, MWIR, and LWIR high-resolution systems Wideband SAR systems RF and laser data links High-speed, high-power photodetector characteriza- tion...Antimonide (InSb) imaging system Long-wave infrared ( LWIR ) quantum well IR photodetector (QWIP) imaging system Research and Development Services

Reynolds Number Effects in Transonic Flow

DTIC Science & Technology

1988-12-01

the asme one as used for the results shown in figure 3.5-10 and -11). Also the corrals - tion between shock Mach number and Reynolds number at the flow...hypercritical, was derived from the conditions on the cylinder in normal flow utilizing the relation for the effective Reynolds number K= Reef /Re0 (see

The Response of Small Scale Rigid Targets to Shallow Buried Explosive Detonations

DTIC Science & Technology

2011-09-01

properties as applied in this work was based on some of the standard defini- tions of soil constitutive properties as found in, e.g., Chen and Baladi [18...Technology Corporation; 2007. [18] Chen WF, Baladi GY. Soil plasticity: theory and implementation. New York: Elsevier Science; 1985. [19] Zimmerman

On-Site Field-Feeding Waste to Energy Converter

DTIC Science & Technology

2008-12-01

fundamentals The feedstock and part of the air needed for gasifica- tion enter through the open top of the downdraft gasifier. The motive force for the air...combustion air before entering the TQG, where the gas/air mixture is compressed by the turbocharger and distributed to the cylinders. The amount of JP-8

Cricket, Anyone?

Treesearch

John Zasada

2001-01-01

The focus for this issue is an interesting group of plants-- the "willows". Although willows have many uses, the one that brings them their "highest level of sophistica- tion" is as the raw material for cricket bats. Somebody, somewhere must make cricket bats from something other than wiliow (to the cricket aficionado this is likely akin to making...

40 CFR 227.27 - Limiting permissible con-cen-tra-tion (LPC).

Code of Federal Regulations, 2011 CFR

2011-07-01

... for initial mixing as provided in § 227.29, does not exceed applicable marine water quality criteria; or, when there are no applicable marine water quality criteria, (2) That concentration of waste or dredged material in the receiving water which, after allowance for initial mixing, as specified in § 227...

40 CFR 227.27 - Limiting permissible con-cen-tra-tion (LPC).

Code of Federal Regulations, 2010 CFR

2010-07-01

... for initial mixing as provided in § 227.29, does not exceed applicable marine water quality criteria; or, when there are no applicable marine water quality criteria, (2) That concentration of waste or dredged material in the receiving water which, after allowance for initial mixing, as specified in § 227...

A Comparative Analysis of the Budget Process in the Venezuelan and U.S. Navies.

DTIC Science & Technology

1979-12-01

accounting problems in particular agencies. The DINCA developed a document, Sistema de Contabilidad de la Ejecucion Financiera del Presupuesto para...orienta- tion of the "Plan Operativo Anual" (POA) - Operative Annual Plan. During the Navy’s mid-range planning process the POA is produced. By means of

Options for Improving the Military Child Care System

DTIC Science & Technology

2008-01-01

kind subsidy. As a system of employer-sponsored care, however, DoD child care ultimately must be assessed in terms of its contribution to military...considered a compensa- tion issue, and the potential of this paradigm is assessed from a broader, more employer-based perspective. This paper will be...52 Recommendations for Assessing

Program Manager: Journal of the Defense Systems Management College, Volume 22, Number 5, September-October 1993

DTIC Science & Technology

1993-10-01

Edwards Deming, Joseph M. Juran, Process Kaoru Ishikawa and Philip B. Crosby Activities stress the importance of work-force employee involvement to...contracts. The Ishikawa - An atmosphere of mutual work-force employee involvement ac- DOD executives have lectured at con- trust and respect is neces- tions

Microbial Reduction of Chromium from the Hexavalent to Divalent State

DTIC Science & Technology

2007-01-01

address: Center for Materials Innova- strong oxidants which act as carcinogens, mutagens, and tion and Department of Physics , Washington University in...perlite. J. Haz. Mat. B95, 29-46. Kimbrough, D.E., Cohen, Y., Winer, A.M., Creelman , L., Mabuni, C., Chen, J.M., Hao, O.J., 1998. Microbial chromium

Research Studies on Radiative Collision Lasers

DTIC Science & Technology

1980-06-01

34Branching Ratios for TlBr Photodissocia- tion with 2660 X Radiation." Abstract: Selective molecular photodi:ssociation as a pumping mechanism to invert...following the flash photolysis of CF I. In the present work we examine the selective 3 photodissociation of TlBr into the Tl(6p 2 P3 / 2 ) metastable state

Response of Infrared-Transparent Materials to Raindrop Impacts

DTIC Science & Technology

1979-10-01

because a clear understanding of its origin will be necessary later. Consider two solutions to the wave equa- tion in the half-space denoted by (uA, tk2 ...pressute profile developed by Rosenblatt, et al. (1977) into Blowers’ formu- lation of the water drop impact problem. The deficiencies in their modifi

Metallic Material Image Segmentation by using 3D Grain Structure Consistency and Intra/Inter-Grain Model Information

DTIC Science & Technology

2015-01-05

Wang. KinWrite: Handwriting -Based Authentication Using Kinect, Annual Network & Distributed System Security Symposium (NDSS), San Diego, CA, 2013 21...the large varia- tion of different handwriting styles, neighboring characters within a word are usually connected, and we may need to segment a word

Seismic Stability Evaluation of Alben Barkley Lock and Dam Project. Volume 3. Field and Laboratory Investigations

DTIC Science & Technology

1989-03-01

the embayment indicating extensive inundation by the sea during these epochs. Some Oligocene and Miocene deposits can be found in the southern part of...accurately measure sleeve fric- tion in low-strength materials without careful calibration and equipment warm -up. The tension cone measures sleeve

The Military Procurement System--Can It Be Improved?

DTIC Science & Technology

1983-05-03

reprice the outyears of the budget. Repricing upwards, however, tends to be a self -fulfilling prophecy so we must be very careful about adding costs...Congress must be more economically resposible . A- Up to now, we haven’t been very good in this regard. Our economic asump- tions: GNP, inflation rates

Home wreckers in search of moisture

Treesearch

Carol A. Clausen; Frederick Green

2002-01-01

Research at the Forest Products Laboratory (FPL) related to durability and disaster mitigation includes damage by decay fungi and termites and contamination by mold fungi. All these household pests are attracted to excess moisture, which can result from inadequate surface drying of condensation, leaks in pipes and foundations, poor ventila-tion, or flooding. Homeowners...

Heavy Lift Helicopter - Prototype Technical Summary

DTIC Science & Technology

1980-04-01

in an inte- grated design. The following paragraphs discuss the swash - plate actuator servo loops and provide details...instrumentation in the prototype aircraft. Development testing of the flight control module in conjunc- tion with the transmission-driven pump and the reservoir was...PFCS employed cockpit controllers and force-feel actuation developed in the ATC

SMART Security Cooperation Objectives: Improving DoD Planning and Guidance

DTIC Science & Technology

2016-01-01

integrate them into a system for assessing, monitoring, and evaluating security cooperation programs and activities. This report evaluates DoD’s...effectiveness in developing SMART security coopera- tion objectives that facilitate assessment, monitoring, and evaluation . It also proposes a systematic...Cooperation Ends, Ways, and Means . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 RAND Evaluation and Revision of Selected

Further Development, Fabrication, and Testing of XM36E1 Fuze Setter

DTIC Science & Technology

1978-08-01

primary func- tion of this circuit, has the same timing characteristics as the original circuit: Half-period pulses are required to be greater than...temperature of -40 0 C. 9 The following corrective action was taken for this mal- fuction : (1) The batteries were replaced, and an investigation of battery

Gas Turbines in Naval Propulsion (Turbinas de Gas en la Propulsion Naval),

DTIC Science & Technology

1983-12-22

produce extra power when needed. /74 There exists a vast panorama of theoretical investigations con- cerned with determination of the ideal division in...recommended for routine opera- tion, due to the thermal stresses produced in the exhaust system). The success achieved by the COSAG systems in the ASIIANTI

Worldwide Report, Arms Control.

DTIC Science & Technology

1985-07-19

on measures of substantially reducing medium -range nuclear arms to agreed-upon levels on the basis of reciprocity and in strict conformity with the ...to the United States to reach agreement on the immediate discontinua- tion by the United States of the deployment of medium -range missiles in Europe... by unilaterally imposing a moratorium on the

Installation Restoration Program. Phase I: Records Search Willow Grove Air Reserve Facility, Willow Grove, Pennsylvania.

DTIC Science & Technology

1984-11-01

FLOW CHART Complet List of Location/Shtes Evaluation of Past Operations at LUste SNMe * ~Potential Hazard to Healh WelareS Reglaor Agencon consolidat...siting studies were also a part of this tions, soil, groundwater sampling and large complex project. analysis, and remedial concept engi- neering. Project

Enhanced Tracking of Ballistic Targets Using Forward Looking Infrared Measurements with Active Target Illumination

DTIC Science & Technology

1989-12-01

known a priori or could be estimated in real time. To overcome these disadvantages, Kalman filtering methodology has been incorporated into the...operator G(fx,fv) =F((xy) After centering, the data is incorporated into the template using the exponential smoothi -g technique of Equa- tion (3-11). It

Buried Object Classification using a Sediment Volume Imaging SAS and Electromagnetic Gradiometer

DTIC Science & Technology

2006-09-01

field data with simulated RTG data using AST’s in-house magnetic modeling tool EMAGINE . Given a set of input dipole moments, or pa- rameters to...approximate a moment by assuming the object is a prolate ellipsoid shell, EMAGINE uses Green’s func- tion formulations to generate three-component

Using Microcomputer-Based Logistics Models to Enhance Supportability Assessment for the USAF Productivity, Reliability, Availability and Maintainability (PRAM) Program Office: A Tailored Approach

DTIC Science & Technology

1989-09-01

goes on to discuss how the innovation process should function within an organization, including five specific phases for successfully managing ... innovation : the recognition of opportunity; idea formulation; product defin- ition; prototype solution; and finally, technology utiliza- tion and diffusion

Aperture Averaging of Scintillation for Space-to-Ground Optical Communication Applications.

DTIC Science & Technology

1983-08-15

SCINTILLATION FOR SPACE-TO-GROUND OPTICAL COMUNICATION APPLICATIONS ........................ 5 REFERENCES...theoretical investigations necessary for the evaluation and applica- tion of scientific advances to now military space systems. Versatility and flexibility...systems. Expertise in the latest scientific developments is vital to the accomplishment of tasks related to these problems. The laboratories that con

40 CFR 265.15 - General inspection requirements.

Code of Federal Regulations, 2011 CFR

2011-07-01

... (2) a threat to human health. The owner or operator must conduct these in-spec-tions often enough to identify prob-lems in time to correct them before -they harm human health or the -environment. (b)(1) The... -and sump pumps) that are import-ant to preventing, detecting, or responding -to environmental or human...

Pathophysiologic and Taxonomic Properties of Coagulase-Negative Micrococcaceae.

DTIC Science & Technology

1983-05-01

implicated as the etiological agents of prosthetic valve endocarditis (Speller and Mitchell, 1973), infections of cerebrospinal fluid shunts (Holt...et al., 1978), peritonitis in patients receiving continuous peritoneal dialysis (Rubin et al., 1980), subacute bacterial endocarditis (Kaye, 1976...tions ( endocarditis , immunocompromised patients, patients with pro- stetic devices and patients with indwelling urinary catheters), one can

40 CFR 265.15 - General inspection requirements.

Code of Federal Regulations, 2013 CFR

2013-07-01

... (2) a threat to human health. The owner or operator must conduct these in-spec-tions often enough to identify prob-lems in time to correct them before -they harm human health or the -environment. (b)(1) The... of the equipment and the probability of an environmental or human health incident if the...

40 CFR 265.15 - General inspection requirements.

Code of Federal Regulations, 2014 CFR

2014-07-01

... (2) a threat to human health. The owner or operator must conduct these in-spec-tions often enough to identify prob-lems in time to correct them before -they harm human health or the -environment. (b)(1) The... of the equipment and the probability of an environmental or human health incident if the...

40 CFR 265.15 - General inspection requirements.

Code of Federal Regulations, 2012 CFR

2012-07-01

... (2) a threat to human health. The owner or operator must conduct these in-spec-tions often enough to identify prob-lems in time to correct them before -they harm human health or the -environment. (b)(1) The... of the equipment and the probability of an environmental or human health incident if the...

Evaluation of the 90-Day Inhalation Toxicity of Petroleum and Oil Shale JP-5 Jet Fuel

DTIC Science & Technology

1985-04-01

urothelium over the surface of the renal papillus, moderate to severe deposits of mineralized debris in medullary tubules (probably at the loop of Henle...and tubular degenera- tion. Hyperplastic areas along the pelvic urothelium were thought to result from mechanical irritation by mineralized de- bris

Propulsion and Energetics Panel Working Group 11 on Aircraft Fire Safety. Volume 2. Main Report

DTIC Science & Technology

1979-11-01

which make burning metal particles a potent igni- tion source and extinguishment of bulk metal fires a difficult task. In the latter case, the difficulty...aircraft to fires induced by uncon- tained engine failures and internal engine metal fires . With respect to the uncontained engine failure current engine

Approximate Deconvolution and Explicit Filtering For LES of a Premixed Turbulent Jet Flame

DTIC Science & Technology

2014-09-19

from laminar flamelets computed with the GRI -mechanism for methane-air combustion (Smith et al. 1999) and the progress variable Yc is defined as in... gri - mech/. Subramanian, V., P. Domingo, and L. Vervisch (2010). Large-Eddy Simulation of forced igni- tion of an annular bluff-body burner. Combust

Costs, Productivity, and the Utilization of Physicians’s Extenders in Air Force Primary Medicine Clinics.

DTIC Science & Technology

1983-06-01

to physicians.7 Using the actual casemix and attitudes toward extenders prevailing at each demonstra- tion base and applying this least constraining...Fairchild, 17 percent; Nellis, 16 percent. The Chanute estimate is lower because its large student population presents a simple casemix , and its patients

Large Extremity Peripheral Nerve Repair

DTIC Science & Technology

2016-12-01

baked overnight in a 60°C oven. Using a diamond blade, 1-μm sections were cut 5 mm proximal and 5 mm distal to the graft. Histologic slides were...Scien- ces), embedded in Epoxy resin (Tousimis Research Corpora- tion, Rockville, MD), and then baked overnight in a 60°C oven. From each proximal and

A Formal Foundation for XrML

DTIC Science & Technology

2008-02-01

grants g, we ab - breviate the condition Said(Alice,Perm(Alice, issue,Perm(Alice, issue, g))) as d(g) and we abbreviate the grant Perm(Alice, issue, g...as a string of symbols. For ease of exposi - tion, we assume that each pair of parenthesis and set braces has length 2, and each comma has length 1

beta-Aminoalcohols as Potential Reactivators of Aged Sarin-/Soman-Inhibited Acetylcholinesterase

DTIC Science & Technology

2017-02-08

This approach includes high - quality quantum mechanical/molecular mechanical calcula- tions, providing reliable reactivation steps and energetics...I. V. Khavrutskii Department of Defense Biotechnology High Performance Computing Software Applications Institute Telemedicine and Advanced...b] Dr. A. Wallqvist Department of Defense Biotechnology High Performance Computing Software Applications Institute Telemedicine and Advanced

What Happened to DT&E?

DTIC Science & Technology

2014-04-01

before beginning production, and that will lead to improved acquisi- tion outcomes. Follow the Money It is often said in the Pentagon and in other areas...of govern- ment that if you want to see how things get done, “ follow the money .” The history of the DT&E office is clearly visible in the funding

Quadratic elongation: A quantitative measure of distortion in coordination polyhedra

USGS Publications Warehouse

Robinson, Kelly F.; Gibbs, G.V.; Ribbe, P.H.

1971-01-01

Quadratic elongation and the variance of bond angles are linearly correlated for distorted octahedral and tetrahedral coordination complexes, both of which show variations in bond length and bond angle. The quadratic elonga tion is dimensionless, giving a quantitative measure of polyhedral distortion which is independent of the effective size of the polyhedron.

Abstracts of Papers Submitted in 1979 for Publication,

DTIC Science & Technology

1979-01-01

Sea, show climatic deteriora- Kozo Takahashi and Susumu Honjo tion beginning between 3.2 and 3.0 m.y. ago. Isotopic results on the planktonic foramin ...water that flows out of At both study sites, the total foramin - the Aegean and forms a small gyre in the iferal flux and the carbonate flux tend to

Aircraft Alerting Systems Standardization Study. Phase IV. Accident Implications on Systems Design.

DTIC Science & Technology

1982-06-01

computing and processing to assimilate and process status informa- 5 tion using...provided with capabilities in computing and processing , sensing, interfacing, and controlling and displaying. 17 o Computing and Processing - Algorithms...alerting system to perform a flight status monitor function would require additional sensinq, computing and processing , interfacing, and controlling

Synthesis and Characterization of High Energy Polymers.

DTIC Science & Technology

1980-03-31

2291 PERIOD COVERED: 9 March 1979 - 8 March 1980 PERSONNEL: Postdoctoral Assoc. T. Kohara Doctoral Candidates B.-H. Su T. Sarubbi Approved for public... Kohara , C.P. Lillya, T. Sarubbi, B-H. Su, and R. Miller, "Phase Transfer Catalyzed Nitromercura- tion of Diene Polymers", accepted for publication in J. Polymer Sci.

Turbulence Variability in the Upper Layers of the Southern Adriatic Sea Under a Variety of Atmospheric Forcing Conditions

DTIC Science & Technology

2012-01-01

Commission. Joint Research Centre. Space Applications Institute. Ispra/ltaly. Signell. R.P., Carniel. S„ Cavaleri, L. Chiggiato , J.. Doyle. J.D... Chiggiato . J.. Carniel. S.. 2008. Variational analysis of drifter positions and model outputs for the reconstruc- tions of surface currents in the

Interactions of Airfoils with Gusts and Concentrated Vortices in Unsteady Transonic Flow,

DTIC Science & Technology

1983-01-01

ain(U, u, ) bances into the solution domain. One such smooth- ,ui ,j ing method was recently demonstrated by Murman and Stremel ,10 who distributed...were qualitatively similar to the predic- °Murman, E. M. and Stremel , P. M., "A Vortex tions of linear theory, but important quantitative Wake

Cardiac Isoenzyme Values after Total Joint Arthroplasty Number 240: March 1989

DTIC Science & Technology

1989-05-01

tion, postoperative myocardial infarction for myocardium. Galen8ŝ reported that its can be painless in up to 50% of patients.7 presence in the serum is...plasty of the hip and knee. organs including myocardium, brain, kid- tained between 18 and 24 hours after infarc- ney, lung, thyroid , bladder, uterus

Electronic Transport in Ultrathin Heterostructures.

DTIC Science & Technology

1981-10-01

heterostructures, superlattices, diffusion-enhanced disorder, transport properties, molecular beam epitaxy (MBE), photoluminescence, optical absorption...tion of single and multilayer GatlAs/GaAs heterostructures by metalorganic chemical vapor deposition (MJCVD) and molecular beam epitaxy (MBE) has...fundamental nature of these clusters and their relevance to other epitaxial techniques such as molecular beam epitaxy (MBE). To further varify or

Symbolic Model-Based SAR Feature Analysis and Change Detection

DTIC Science & Technology

1992-02-01

normalization fac- tor described above in the Dempster rule of combination. Another problem is that in certain cases D-S overweights prior probabilities compared...Beaufort Sea data set and the Peru data set. The Phoenix results are described in section 6.2.2 including a partial trace of the opera- tion of the

Workload Estimates for Combat Engineers in the Desert.

DTIC Science & Technology

1986-04-01

11111_!2 4 MICROCOP RES LU I N !ESICHR 111112 5 l *. ff APPENDIX B-8 BUILD A PROTECTIVE POSITION FOR A 155-MM TOWED HOWITZER 1. Terrain. Sandy Desert...the repeated cycles of dissolving calcium, silicon, and ferric compounds in the soil, followed by rapid evapora- tion. The result is a cemented top

EFFECTS OF PORE WATER VELOCITY ON THE TRANSPORT OF ARSENATE. (R825403)

EPA Science Inventory

The potential for AsO₄ to exhibit sorption-related
nonequilibrium
during transport has not been previously determined.
Consequently, the objectives of this study were to
determine
the applicability of transport models based on the advec
tion-di...

Development Assistance in Haiti: Where Has the Money Gone?

DTIC Science & Technology

2014-12-01

the oversight from the United Nations on all of the aid money entering Haiti, alleviating President Préval of the temptation was a justifiable... Suicide Alexander Pétion 1807–1818 Died in Office Jean Pierre Boyer 1818–1843 Overthrown Riviere Rivière-Hérard 1843–1844 Overthrown Philippe

U.S. Army Medical Bioengineering Research and Development Laboratory Annual Progress Report FY 1985. Volume 1

DTIC Science & Technology

1985-10-01

heterotrophic carbon dioxide fixa- tion. An assay for T2 toxin using the yeast Cryptococcus luteolus was evaluated as a rapid screening device for toxic...Bioassay for Mycotoxins Using Cryptococcus luteolus with Tetrazolium Salts." Poster session at the American Soc. for Microbiol. Annual Meeting, March

An investigation of factors affecting wettability of some southern hardwoods

Treesearch

Todd F. Shupe; Chung Y. Hse; Wan H. Wang

1999-01-01

>Wettability of sanded and nonsanded transverse and tangential sections of 22 southern hardwood species were[was] judged by measurement of contact angles using phenol-formaldehyde resins. As ex­pected, contact angle values on transverse sec­tions were higher than on tangential sections for both sanded and...

Development of Composite Case Salvage Procedures

DTIC Science & Technology

1982-04-01

submerged in water. The metal parts of a Pershing size motor could be reclaimed by underwater burnout, depending on the severity of the defect. A description...tion in burst strength results, and b) the effects of multi-proofing. C-135 (. APPENDIX A INTER-OFFICE MEMO , ATh 23 No,. mbr 19A, 9205-81-4080 TO: K. B

From the Air: Rediscovering Our Raison D’etre

DTIC Science & Technology

2012-08-01

constraints and war weariness take their toll . Ensuring that the Air Force can serve the na- tion in its capacity as a strategic arm represents a... Lawson   and Jane Lawson , The First Air Campaign, August 1914–November 1918 (Conshohocken, PA:  Combined Books, 1996); and John H. Morrow Jr., The

Modifications to the Vulnerability Model: A Simulation System for Assessing Damage Resulting from Marine Spills

DTIC Science & Technology

1979-03-01

and they do not constituto a standard, specific-3tion, or regulation. This report, or portions thereof may not be used for advertising or sales ... promotion purposes. Citation of trade names and manufacturers does not constitute endorsement or approval of such products. I; Technical Report

Improved Survival with Aggressive Surgical Management of Noncandidal Fungal Infections of the Burn Wound

DTIC Science & Technology

1982-10-01

noncandidal fungal infections were diagnosed premor- Mortality of burn patients with fungal infections diagnosed teni . This compares with 63.6" of...pathogenesis, Candida infec- cemia, illustrated evalual ion of its skin lesion . Arch. Intern. Med..128: 591-595, 1971.tions are never discovered when they are

Ternary Sulfide Infrared Window Materials.

DTIC Science & Technology

1981-10-10

results. Oxalates of the two cations can also be used for those combinations where oxalates of good purity are available. The reaction is: CaCO3 + 2La(OH... hydrothermal condi- tions. At 3000C and 300 bars pressure, CaLa2S4 breaks down completely into a mixture of calcium and lanthanum hydroxides. 3.0 CERAMIC

The Specter of Sunni Military Mobilization in Lebanon

DTIC Science & Technology

2013-11-01

stabilization  Future national security environment and forces  European security issues, especially the Mediterranean littoral  West Africa...5  More space for militant narratives .......................................................... 8  The Syrian war comes...their political dominance  Sunni officials and elites attack the legitimacy of state institu- tions, particularly the Lebanese Army  The Future

Reduced Order Modeling Methods for Turbomachinery Design

DTIC Science & Technology

2009-03-01

and Ma- terials Conference, May 2006. [45] A. Gelman , J. B. Carlin, H. S. Stern, and D. B. Rubin, Bayesian Data Analysis. New York, NY: Chapman I& Hall...Macian- Juan , and R. Chawla, “A statistical methodology for quantif ca- tion of uncertainty in best estimate code physical models,” Annals of Nuclear En

Impact of a Protective Vest and Spacer Garment on Exercise-Heat Strain

DTIC Science & Technology

2008-01-01

or condi- tioning (air cooling/ dehumidification ) is used due to increased weight, noise, and cost. Thermal manikin and modeling analyses at 1 m/s...of sphericity was violated, F values were adjusted using Greenhouse -Geisser or Huynh-Feldt values as appropriate. Tukey’s HSD pro- cedure was used to

2011 NRL REVIEW

DTIC Science & Technology

2011-01-01

other mechanism ? What accelerates the solar wind? What are the near- Sun plasma properties (particle density, magnetic field)? Does the solar wind come...microstructure character iza tion, elec tronic ceramics, solid-state physics, fiber optics, electro-optics, microelectronics, fracture mechan ics...computational fluid mechanics , experi mental structural mechanics , solid me chan ics, elastic/plastic fracture mechanics , materials, finite-element

Plasma Instabilities and Transport in the MPD Thruster

DTIC Science & Technology

1993-06-01

driven plasma accelera- tion vesrus current-deiven energy dissipation Part III: anomalous trasnport . In 2 8’A Joint Propulsion Conference, Nashville... trasnport In the March/April Bi- monthly Progress Report of the Electric Propulsion and Plasma Dynamics Laboratory. Technical Report MAE 1776.36, EPPDyL, Princeton Univer- sity, 1992. 0 0

Forty Years at ESO - Bernard Delabre and Optical Designs

NASA Astrophysics Data System (ADS)

de Zeeuw, T.; Lévêque, S.; Pasquini, L.; Péron, M.; Spyromilio, J.

2017-09-01

The optical designer Bernard Delabre has retired from ESO after 40 years at the forefront of telescope and instrument optics. A short overview of his achievements and his legacy of astronomical telescopes and instrumenta-tion is presented. Bernard Delabre was awarded the 2017 Tycho Brahe Prize by the European Astronomical Society.

Center for Applied Solar Physics

DTIC Science & Technology

1990-04-30

and store each image. This may seriously de- 2 Jefferics, J., Lites, B. W., and Skumanich , A., "Transfer of Line Radia- tion in a Magnetic Field...in 1952. He received a B.S. degree in mathe- JOHN W. O’BYRNE was born in matics and physics from Andrews Sydney, Australia, in 1959. He re

Structure-based Design of Cdk4/6-Specific Inhibitors

DTIC Science & Technology

2005-10-01

were selected to facilitate interactions with residues in neighboring repeats. Moreover,buried hydrophilic residues were mutated to hydrophobic res- Fio ... Russo , A. A., Tong, L., Lee, J.-O., Jeffrey, P. D., and Pavletich, N. P. (1998) tion, although we do not yet have structures for the p18"NK4c Nature 395

Tuner of a Second Harmonic Cavity of the Fermilab Booster

DOE Office of Scientific and Technical Information (OSTI.GOV)

Terechkine, I.; Duel, K.; Madrak, R.

2015-05-17

Introducing a second harmonic cavity in the accelerating system of the Fermilab Booster promises significant reduc-tion of the particle beam loss during the injection, transi-tion, and extraction stages. To follow the changing energy of the beam during acceleration cycles, the cavity is equipped with a tuner that employs perpendicularly biased AL800 garnet material as the frequency tuning media. The required tuning range of the cavity is from 75.73 MHz at injection to 105.64 MHz at extraction. This large range ne-cessitates the use of a relatively low bias magnetic field at injection, which could lead to high RF loss power densitymore » in the garnet, or a strong bias magnetic field at extraction, which could result in high power consumption in the tuner’s bias magnet. The required 15 Hz repetition rate of the device and high sensitivity of the local RF power loss to the level of the magnetic field added to the challenges of the bias system design. In this report, the main features of a proposed prototype of the second harmonic cavity tuner are presented.« less

DOE Office of Scientific and Technical Information (OSTI.GOV)

Lill, R.; Sereno, N.; Yang, B.

The Advanced Photon Source (APS) is currently in the preliminary design phase for the multi-bend achromat (MBA) lattice upgrade. Beam stability is critical for the MBA and will require long term drift defined as beam mo-tion over a seven-day timescale to be no more than 1 mi-cron at the insertion device locations and beam angle change no more than 0.25 micro-radian. Mechanical stabil-ity of beam position monitor (BPM) pickup electrodes mounted on insertion device vacuum chambers place a fun-damental limitation on long-term beam stability for inser-tion device beamlines. We present the design and imple-mentation of prototype mechanical motion system (MMS)more » instrumentation for quantifying this type of motion specif-ically in the APS accelerator tunnel and experiment hall floor under normal operating conditions. The MMS pres-ently provides critical position information on the vacuum chamber and BPM support systems. Initial results of the R&D prototype systems have demonstrated that the cham-ber movements far exceed the long-term drift tolerance specified for the APS Upgrade MBA storage ring.« less

Performance analysis of local area networks

NASA Technical Reports Server (NTRS)

Alkhatib, Hasan S.; Hall, Mary Grace

1990-01-01

A simulation of the TCP/IP protocol running on a CSMA/CD data link layer was described. The simulation was implemented using the simula language, and object oriented discrete event language. It allows the user to set the number of stations at run time, as well as some station parameters. Those parameters are the interrupt time and the dma transfer rate for each station. In addition, the user may configure the network at run time with stations of differing characteristics. Two types are available, and the parameters of both types are read from input files at run time. The parameters include the dma transfer rate, interrupt time, data rate, average message size, maximum frame size and the average interarrival time of messages per station. The information collected for the network is the throughput and the mean delay per packet. For each station, the number of messages attempted as well as the number of messages successfully transmitted is collected in addition to the throughput and mean packet delay per station.

Dynamic Simulation of a Helium Liquefier

NASA Astrophysics Data System (ADS)

Maekawa, R.; Ooba, K.; Nobutoki, M.; Mito, T.

2004-06-01

Dynamic behavior of a helium liquefier has been studied in detail with a Cryogenic Process REal-time SimulaTor (C-PREST) at the National Institute for Fusion Science (NIFS). The C-PREST is being developed to integrate large-scale helium cryogenic plant design, operation and maintenance for optimum process establishment. As a first step of simulations of cooldown to 4.5 K with the helium liquefier model is conducted, which provides a plant-process validation platform. The helium liquefier consists of seven heat exchangers, a liquid-nitrogen (LN2) precooler, two expansion turbines and a liquid-helium (LHe) reservoir. Process simulations are fulfilled with sequence programs, which were implemented with C-PREST based on an existing liquefier operation. The interactions of a JT valve, a JT-bypass valve and a reservoir-return valve have been dynamically simulated. The paper discusses various aspects of refrigeration process simulation, including its difficulties such as a balance between complexity of the adopted models and CPU time.

A Review and Annotated Bibliography of Armor Gunnery Training Device Effectiveness Literature

DTIC Science & Technology

1993-11-01

training effectiveness (skill acquisition, skill reten-tion, performance prediction, transfer of training) and (b) research limitations (sample size...standalone, tank-appended, subcaliber, and laser) and four areas of training effectiveness (skill acquisition, skill retention, performance prediction, and...standalone, tank-appended, subcaliber, laser) and areas of training effectiveness (skill acquisition, skill retention, performance prediction, transfer of

Manpower Requirements Report for FY 1982

DTIC Science & Technology

1981-02-01

Specifically included are program elements for industrial preparedness, second destination transportation, property disposal, production engineering ...artillery, and combat - engineers . Army policy accepts the fact that women will serve in loca- .. tions throughout the battlefield, will be expected to... industrial engineering work measurement techniques and computerized models such as the Logistics Composite Model (LCOM). MEP policy emanates from the

Metallodielectrics as Metamaterials

DTIC Science & Technology

2010-01-01

found in nature. Associated effects include negative refraction, negative phase accumulation along a path, and superresolution . Superresolu- tion, first...mid-wave IR regime and beyond with carefully chosen design parameters. The suggestion that metal films alone could demonstrate superresolution in the...our interest to achieve superresolution using MDs that would overcome the drawbacks of pure metal films, with opacity chief among them. Our calculations

The M198 Howitzer as a Direct Support Weapon during Amphibious Operations.

DTIC Science & Technology

1980-06-06

critical to the success of f:;ture amphibio ..s ot.er-.tions. Purpose of the Study, The purpose of this study is to determine the imrpact of the ,19 ’s...principle amphibio ;- shies lift capatilities and physical characte-istics indic -tcs thir flexibility a ,d speed, or lack tnhreof, in d::>.rking large

Electromagnetic Remote Sensing. Low Frequency Electromagnetics

DTIC Science & Technology

1989-01-01

biased superconducting point - contact quantum devices", J.Appl.Phys. 41, p.1572, 1970. [40] A.Yariv and H.Winsor, "Proposal for detection of magnetic ... magnetics , electromagnetic induc- tion, electrostatics) 2. Nondestructive testing (electromagnetic induction, neutron tomography, x-ray imaging) 3...Detection of submarines from aircraft or ships ( magnetics , electromagnetic induction) 4. Detection of land vehicles using buried sensors ( magnetics

Armed Services Vocational Aptitude Battery (ASVAB): The Equity of ASVAB Form 14 in the Prediction of High School Course Grades

DTIC Science & Technology

1990-08-01

differential validity 612 ASVAB test constru~tion, 16 .PRIC’E CODE bias 17. SECURITY CLASSIFICATION 18. SECURITY CLASSIFICATION jig. SECURITY CLAS...15 Juniors 1985-86 .............................. 15 Seniors 1984-85 .............................. 16 Algebra... 16 Freshmen 1984-85 ............................. 16 Freshmen 1 85-86 ............................. 16 Sophomores 1984-85

Preparation and Characterization of Single Crystals and Epitaxial Layers of Silicon Carbide by Molten Salt Electrolysis.

DTIC Science & Technology

1980-10-01

requires the simultaneous cathodic deposi- tion of silicon and carbon under conditions where reaction to form SiC will occur. In this study sodium or...reactivity with the melt. Nickel suffers from the disadvantage that it reacts with silicon to form nickel silicides , but the concentration of silicides in

Application of a Granular Mineral-Based Hemostatic Agent (QuikClot) to Reduce Blood Loss After Grade V Liver Injury in Swine

DTIC Science & Technology

2004-09-01

tion of tiletamine hydrochloride (HCl) and zolazepam HCl (Telazol, Fort Dodge Laboratories, Fort Dodge, IA), anesthe- sia was induced by mask using...Demceva M, Vournakis J, Finkielsztein S, Connolly RJ. Comparison of poly-N-acetyl glucosamine (P-GlcNAc) with absorbable collagen (Actifoam) and fibrin

Master Plan for Environmental Education

DTIC Science & Technology

1992-10-01

Laboratory (DOE) • National Center for Research in Vocational Education Ž National Environmental Training Association • Navajo Community College 4...PROVEMENTS PRODUCTION AIDS NG FOR SHIPBUILDERS STANDARDS THE NATIONAL TION INTEGRATION SHIPBUILDING FOR SHIPBUILDING RESEARCH ION AND COATINGS... National Steel and Shipbuilding Company San Diego, California Report Documentation Page Form ApprovedOMB No. 0704-0188 Public reporting burden for the

Thermospheric Dynamics during September 18-19, 1984. 2. Validation of the NCAR Thermospheric General Circulation Model

DTIC Science & Technology

1989-12-01

seems unlikely, however, that the assumptions could ac- pulse [ Testud , 1973; Richmond, 19781. However, the TGCM count entirely for the discrepancy...ircla- Testud , J., Ondes atmosph~riques de grande chelle et sous-orages tion in m agnetic storm characteristics w ith application to A E-C m nt u es .t

Environmental Compliance Assessment System (ECAS)

DTIC Science & Technology

1994-02-01

between producers of agricultural and forestry commodities, on the property of another person. "* Restricted Use Pesticide - any pesticide whose label...agencies have responsibility in the areas indicated: "* Department of Agriculture, Division of Entomology and Pesticides - has responsibility for the...regula- tion of pesticide and herbicide management. " Department of Natural Resources - handles all permits required by state and Federal environmental

Studies in Intelligence

DTIC Science & Technology

2010-03-01

enterprise professionalism . The military experience in using the exist- ing service—and building joint— professionalism institu- tions is instructive. No... build a real NIU, take on professionalization activities of common concern (e.g., joint training), and estab- 31 Analysis 101 was a month-long...course for new analysts to establish professional net- works while building a common analytic framework. After receiving positive initial feedback

Dual Fine Tracking Control of a Satellite Laser Communication Uplink

DTIC Science & Technology

2006-09-14

rejec- tion results for LQG control compared with adaptive least mean squares (LMS) and gradient adaptive lattice (GAL) algorithms , however, both...period [7, page 256]. The steady-state Kalman filter, defined by the predictor / corrector form, is implemented for each beam respectively as [7, page...Disturbance Environment . . . . . . . . . . . . . . . . . 97 B.4 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Appendix C . Aircraft

A Quasi-Optical Method for Measuring the Complex Permittivity of Materials.

DTIC Science & Technology

1984-09-01

structural mechanics, flight dynamics; high-temperature thermomechanica, gas kinetics and radiation; research in environmental chemistry and...specific chemical reactions and radia- tion transport in rocket pluses, applied laser spectroscopy, laser chemistry, batery electrochemistry, space...corrosion; evaluation of materials in space environment ; materials performance In space transportation systems; anal- ysis of system vulnerability and

Damping Characteristics of Metal Matrix Composites

DTIC Science & Technology

1989-05-25

DAMPING OF METAL MATRIX COMPOSITES - -.......... 7-1 7.1 EPERIMENTAL PROCEDURE .............................................................. 7-1 7.2 M...space structures (LSS). A critical design concern for LSS is suppression of vibrations, caused by onboard and hostile threat-related disturbances during...acquisi- tion pointing and tracing (APT) phases of maneuvering. Various active and passive control mea- sures can be incorporated in the designs of

In-Situ Subsurface Coating of Corroded Steel Sheet Pile Structures: Final Report on Project F08-AR06

DTIC Science & Technology

2017-09-01

scraped the sheet pile wall with an excavator. After scraping the out-pans with a flat edge bucket, the contractor welded a blade on the bucket...unusual striations were parallel grooves running at 30 – 45 degrees from the vertical. Some patterns cross each other symmetrically. The stria- tions

Large Extremity Peripheral Nerve Repair

DTIC Science & Technology

2016-12-01

Corp., Rock- ville, Md.); and then baked overnight in a 60°C oven. Using a diamond blade, 1-μm sections were cut 5 mm proximal and 5 mm distal to the...Epoxy resin (Tousimis Research Corpora- tion, Rockville, MD), and then baked overnight in a 60°C oven. From each proximal and distal end, 1 µm

Target Recognition in Ultra-Wideband SAR Imagery

DTIC Science & Technology

1994-08-01

Poles in a Transfer Function for Real Frequency Informa- tion," Lawrence Livermore Laboratory, UCRL -52050 (April 1974). 24. V. K Jain, T. K. Sarker, and...0.777 Gaussian 0.849 1 5,265 0.978 93 Distribution Adrnnstr ARPAJASTO Defris Techi Info Ctr Attn T DePersia Attn DTIC-DDA (2 copies) 3701 N Fairfax Dr

Effect of Fuel Properties on Injection Characteristics of Four Different Diesel Injection Systems.

DTIC Science & Technology

1985-12-01

Effects on Combustion in Direct Injection Diesel Engines," SAE Technical Paper Series, No. 850108, International Congress and Exposi - tion, Detroit, MI...NIEMEYER) I AMXSY-CR 1 DEFENSE STANDARDIZATION OFFICE ABE SYNR R ATTN DR MILER 1 ABERDEEN PROVING GROUND MDATTN: DR S ILLE I 10-06 . 2 1005-5006 5203

Pole-Zero Modeling of Transient Waveforms: A Comparison of Methods with Application to Acoustic Signals

DTIC Science & Technology

1991-03-01

forecasting and control, rev. ed., Holden Day, San Francisco , 1976. 2. John M. Gottman, Time-series analysis, a comprehensive introduction for social...Vol. ASSP-28. No. 3. pp. 292-:303, .June 1980. .58. Luis Vergara - Dominguez, -New insights into the high-order Yule-Walker equa- tions," IEEE Trans

Surface Currents. Norwegian and Barents Seas.

DTIC Science & Technology

1980-01-01

DIRECTION. 231 23 - 6 1 SECONDARY DIRECTION). 2 044 37- 10 06 f ’A, SPEEOS 1.0 KNOT PRIMARy DIRECTION. 0.6 KNOT1 I- t 043 SECONDARY DIRtTION). D I P 0 0...LONDON NWSED MAYPORT NWSED NAPLES NWSED PATUXENT RIVER NWSED ROOSEVELT ROADS NWSED SIGONELLA NWSED SOUDA BAY OTHER GOVT. NOAAINODC NOM ,/NCC SCCUMVVV

Translations on North Korea No. 487

DTIC Science & Technology

1976-10-19

where the great Ch’ongsan-ri Spirit and the Ch’ongsan-ri Method originally started. Ch’ongsan-ri—a land of ecstasies —shone in the burning glow of the...base and make complete combat prepara- tions so as to be able to repulse all the enemy attacks in a single stroke . The people in the guerrilla base

Predicting Magazine Audiences with a Loglinear Model.

DTIC Science & Technology

1987-07-01

Journal of Advertising Research , 1...Exposure Distribution Models," Journal of Advertising Research , 22, 35-44. (1982b), "How Media Directors View Reach/Frequency Estima- tion," Journal of Advertising Research , 22...Research Quarterly, 14, 4, 365-376. Liebman, L. and Lee, E. (1974), "Reach and Frequency Estimation Services," Journal of Advertising Research , 14,

Fiscal Year 2003 Appendix, Budget of the United States of America

DTIC Science & Technology

2002-01-01

the specifica- tions shall include requirements for— (I) a fountain; (II) extensive use of trees and flowering plants from each of the 50 States; (III...Estimates Reports issued ...................................................................................... 12 12 12 Weekly Weather and Crop Bulletin...disadvantaged farmers and ranchers. The USDA will provide outreach, training, and technical assistance on sound farm management and production, crop

Quasi-Algorithm Methods and Techniques for Specifying Objective Job/Task Performance Requirements

DTIC Science & Technology

1978-07-01

succeeding experts. While "dottings of i’s and crossings of t’s" may still occur, these trivia no longer significantly affect the course of task...That is, as soon as a branch entered under the assunption that condi- tion A applied was completed, administrator and expert recycled to the

The Role of Mycorrhizal Fungi in Ecosystem Energetics.

DTIC Science & Technology

1982-03-01

16 The Mycorrhizal Subsystem and its Effect on Production ........ .................... 19 A Four-Pathway Food Chain Model ... ........... ... 22...69 1. Effect of Inoculation with Mycorrhizal Fungi on Production of Plant Biomass Over Time ..... ............... ... 69 2... Effect of Inoculation with Mycorrhizal Fungi on Annual Plant Production and Partitioning of Annual Plant Produc- tion to Stem, Branches, and Needles

Education in Brazil

DTIC Science & Technology

1993-04-01

student dropout rate and a lacking scientific tradition. This paper would be beneficial to someone interested in educa- tion, especially the...Competition is keen, especially in engineering, and medicine. The test is very difficult. It tests students knowledge of biology, chemistry, physics...States’ Industrial and National War Colleges and prepares "civilians and military to perform executive and advisory functions, especially in those

Simulation of Blast Loading on an Ultrastructurally-based Computational Model of the Ocular Lens

DTIC Science & Technology

2012-10-01

mechanisms of traumatic cataract forma - tion that may require cataract surgery (implantation of an intraocular lens (IOL)) are not well understood in...cornea and cutting through the iris and zonules. This was done by making a small incision with a diamond-head blade at the edge of the cornea and using

Understanding and Harnessing the Power of Ideas, Persuasion, and Trust 2.0

DTIC Science & Technology

2014-03-01

15 Festive Dinner: Asian Civilisations Museum...Opening Session 08:30 - 17:30 Keynote Presentation Pa per Presenta tion Sessions Round Table Sessions 18:00 - 22:00 Festive Dinner, Asia n...reciprocity. Bart Vonneste (University College l ondon) Festive Dinner (I B:OO - 20:00: Tours, drinks, and hors d’oeuvres) (20:00 onward~: Dinner

Target Tracking in Heavy-Tailed Clutter Using Amplitude Information

DTIC Science & Technology

2009-07-01

to integrate the data before the detection decision is made, as done in so- called Track - Before - Detect (TBD) [5,14]. For very low SNR, when the target...Processes. McGraw-Hill, 2002. [14] M. G. Rutten, N. J. Gordon, and S. Maskell, “Recur- sive track - before - detect with target amplitude fluctua- tions,” in IEE

Location Management in Distributed Mobile Environments

DTIC Science & Technology

1994-09-01

carried out to evaluate the performanceof di erent static strategies for various communica-tion and mobility patterns. Simulation results indi-cate...results ofsimulations carried out to evaluate the performanceof proposed static location management strategies forvarious call and mobility patterns...Systems, Austin, Sept. 1994. U.S. Government or Federal Rights License 14. ABSTRACT 15. SUBJECT TERMS 16. SECURITY CLASSIFICATION OF: 17

Hazardous Waste Land Disposal Facility Assessment. Volume 2. Appendices

DTIC Science & Technology

1988-09-01

ADVERTISEMENT. 1 ~ I 3 TABLE OF CONTENTS VOLUME I -RMORT 1.0 SUNMARY ............. . . .... . 1 - 1 1.1 PURPOSE ............ . .... . 1 - 1 1.2 SCOPE... 1 - 1 1.3 CONCLUSIONS................................ 1 -2 1 .4 RECOHIDA TIONS . . . . . ............... 1 -3 2.0 INTRODUCTION...2- 1 3.0 SITE SELECTION ...... . . ............. 3- 1 3.1 OBJECTIVES AND BACKGROUND ............... ... 3- 1 3.2 GENERAL RMA

Solid State Research.

DTIC Science & Technology

1995-08-15

contact formation. 16 The surface morphology was examined using Nomarski contrast microscopy. The alloy composi- tion of AlGaAs layers was...tunnel. For this purpose, a previously reported FEA fabrication process [2] based on laser- interferometric lithography is being optimized to produce...allows angle of arrival to be determined using only compressed pulse amplitudes. The alternative is an interferometric antenna coupled to a

Hygrothermal Simulation: A Tool for Building Envelope Design Analysis

Treesearch

Samuel V. Glass; Anton TenWolde; Samuel L. Zelinka

2013-01-01

Is it possible to gauge the risk of moisture problems while designing the building envelope? This article provides a brief introduction to computer-based hygrothermal (heat and moisture) simulation, shows how simulation can be useful as a design tool, and points out a number of im-portant considerations regarding model inputs and limita-tions. Hygrothermal simulation...

Ignition of Nanocomposite Thermites by Electric Spark and Shock Wave

DTIC Science & Technology

2014-04-30

Acknowledgments The research described here was based on work supported by the US Army Research Office under awards W911NG-13-0217 ( DDD ) and W911NF-12-1...0161 (ELD), and the US Defense Threat Reduc- tion Agency (DTRA) under award HDTRA1-12-1-0011 ( DDD ). William L. Shaw acknowledges support from the

First Case Report of SAM (registered trademark) Junctional Tourniquet Use in Afghanistan to Control Inguinal Hemorrhage on the Battlefield

DTIC Science & Technology

2014-06-02

cal care nurse ( ECCN ) and flight medic arrived at the aid station to prepare the casualty for the MEDEVAC flight. Peripheral intravenous catheter...remained strong. The left leg’s distal pulses, however, were detected by manual palpa- tion by the ECCN . Reassessment of the wound site and bandage

Atropine and Other Anticholinergic Drugs

DTIC Science & Technology

2007-01-01

parasympathetic est concern, along with their chemical names and nerves and muscarinic and nicotinic choliner - two-letter military designations, are tabun (o...that hydrolyzes the cholin - tions, tremor, convulsions, electrical seizures and ergic neurotransmitter acetylcholine (ACh), that loss of respiratory... cholin - depress salivation, bronchial secretions and ergic synaptic nerve terminals, this leads to very sweating, increase heart rate, produce pupilary

Evaluation of a Simple Device for Scoring Nystagmus.

DTIC Science & Technology

1979-05-15

thle NC 0- 1 00. s-oi ril, begoan at tilie end of tile iirl igat ion Pm~ iod and e.nded after the resporrw hodi~ cbd its mfi xisiruril value anld was...arid other similar artifacts would then permit selec- tion of the appropriate interval for handscoring, or by thc NCO-100 if the record were on tape

A Proposal for Qualification Standards as a Contracting Officer in the Naval Facilities Engineering Command.

DTIC Science & Technology

1985-06-01

4. Government Contract Law , DMET PPM 302 (JT); two weeks in length...ccitent: reviews basic legal principles and sources of contract law , modifications, termina- tions, remedies, interpretation of contract language...Governmepnt Contract Law PPM 302 (JT) ____ _____ Recomripnded Optional Courses 1. Advanced Contract Administration PPM 304 (IT) _ ___ _____ 2. Management of

Eyes Behind the Lines: US Army Long-Range Reconnaissance and Surveillance Units

DTIC Science & Technology

2005-01-01

while still at Fort Campbell, Ken - tucky, converted its divisional Recondo School into a provisional LRRP unit in the summer of 967, before the...helicopter rather than a Hughes OH-6A light observa- tion helicopter (LOH, but commonly called “ loach ”), which had a crew of two (pilot and observer

A Combined Arms Approach to Defending Army Networks

DTIC Science & Technology

2012-01-01

GIG operates, through cyberspace, as a globally interconnected, end...operations from the friendly to adversary box increases the situational awareness and unity of effort the Army lacks, and creates an economy of force that...indica- tions and warnings • Present a timely and accurate estimate of technical impact result- ing from the threat activity and determine

Lights, Camera, AG-Tion: Promoting Agricultural and Environmental Education on Camera

ERIC Educational Resources Information Center

Fuhrman, Nicholas E.

2016-01-01

Viewing of online videos and television segments has become a popular and efficient way for Extension audiences to acquire information. This article describes a unique approach to teaching on camera that may help Extension educators communicate their messages with comfort and personality. The S.A.L.A.D. approach emphasizes using relevant teaching…

Motivation for a High Explosive Testing Program in South Africa

DTIC Science & Technology

2015-12-04

following): Contractor Performance Evaluation Foreign Government Information Administrative or Operational Use Specific Authority ~ Proprietary lnformati...Software Document~tion Administrative or Operational Use B Foreign Governmen Information 0 D. Distribution authorized to the Department of Defense...and U.S. DoD Contractors only (check the following): 0 § Foreign Government Information Critical Technology Administrative or Operational Use B

Implementation Aspects of Flood Warning and Preparedness Planning Alternatives

DTIC Science & Technology

1981-08-01

committees, and the Congress as a whole was on these other provisions which traditionally are regarded as bread and butter items by influential interests...near Shea Blvd. in Scottsdale. 7-23 iy.i.• I I I " I I I I I ’n , -. ... . .. 2• 3. Purchase, installation, calibration, opera- tion, servicing and

DARPA Emerging Technologies

DTIC Science & Technology

2016-01-01

development requires wind tunnels and ranges that do not currently exist. Furthermore, continued technology matura- tion is needed for thermal management...designed with conceptual design engine model (at existing technology level), or existing propul- sion system, or modified propulsion system (e.g...internal cameras reading gauges and dials and switch positions , directly tapping into current or future avion- ics service buses and integrating

In Athena’s Camp; Preparing for a Conflict in the Information Age

DTIC Science & Technology

1997-01-01

capital, as man remains the purest, richest information-hurling system. In the words of pulp cinema icon, John Rambo, "the mind is the greatest...tion camp guards shortly after World War II; the crash of a hijacked Malaysian passen- ger plane in 1977; the arson attack at an Aba’dan movie theater

Ocean Data Assimilation: A Coastal Application

DTIC Science & Technology

2009-01-01

tcchnique with a semi-implicit formulation for the vertical acoustic modes (Ho- dur 1997; Hodur et al. 2002; Doyle et al. 2(08). A Robert time filter...r;,d i<l tion pyrometer was used to me<lsure SST with O. loe precision and O.SoC absolute ;Iccuracy. Sample ::l ircrllft p;Jths for J 3 August 2003

AFRL/Cornell Information Assurance Institute

DTIC Science & Technology

2007-03-01

revewing this colection ofinformation . Send connents regarding this burden estimate or any other aspect of this collection of information, indcudng...collabora- tions involving Cornell and AFRL researchers, with * AFRL researchers able to participate in Cornell research projects, fa- cilitating technology ...approach to developing a science base and technology for supporting large-scale reliable distributed systems. First, so- lutions to core problems were

Scale problems in reporting landscape pattern at the regional scale

Treesearch

R.V. O' Neill; C.T. Hunsaker; S.P. Timmins; B.L. Jackson; K.B. Jones; Kurt H. Riitters; James D. Wickham

1996-01-01

Remotely sensed data for Southeastern United States (Standard Federal Region 4) are used to examine the scale problems involved in reporting landscape pattern for a large, heterogeneous region. Frequency distribu-tions of landscape indices illustrate problems associated with the grain or resolution of the data. Grain should be 2 to 5 times smaller than the...

Free-Surface Flow and Fluid-Object Interaction Modeling With Emphasis on Ship Hydrodynamics

DTIC Science & Technology

2012-01-01

0 on Cawt (21) in a weak sense. Equation (20) is the Eikonal partial differential equation subject to the interior constraint given by Eq. (21). To...tion, respectively. The formulation given by Eq. (22) is the SUPG method [30] applied to the Eikonal equation. At the steady state, the above problem