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Sample records for produto num projeto

  1. Using the Global Arrays Toolkit to Reimplement NumPy for Distributed Computation

    SciTech Connect

    Daily, Jeffrey A.; Lewis, Robert R.

    2011-09-01

    Global Arrays (GA) is a software system from Pacific Northwest National Laboratory that enables an efficient, portable, and parallel shared memory programming interface to manipulate distributed defense arrays. Using a combination of GA and NumPy, we have reimplemented NumPy as a distributed drop-in replacement called Global Arrays in NumPy (GAiN). Scalability studies will be presented showing the utility of developing serial NumPy codes which can later run on more capable clusters or supercomputers.

  2. Simulation numérique de la radioactivité

    NASA Astrophysics Data System (ADS)

    Tsilanizara, A.; Cuendet, P.

    1998-04-01

    The radionuclides concentrations evolve instantaneously in accordance with the coupled differential equations, called commonly the generalised Bateman systems. Two approaches to solve these equations are described. The first one is an analytical method, based on a series expansion for the exponential function, and is suitable to the radioactive desintegration problem (without neutron absorption). The second one is a numerical method based on the forth order Runge-Kutta scheme and principally used in the case when neutron absorption is considered. Numerous nuclear data are required in practice to accomplish a computational code for numerical simulation of the radioactivity. These data are also described. L'évolution temporelle des concentrations des radionucléides d'un milieu sous flux de particules (régime dit d'irradiation) ou hors flux de particules (régime dit de refroidissement), est régie par des équations différentielles couplées, les équations généralisées de Bateman. La résolution de ces équations est décrite : on exposera les principes de deux méthodes de résolution, l'une analytique fondée sur le développement de la solution sur la base des fonctions exponentielles décroissantes, l'autre numérique de type Runge-Kutta de quatrième ordre. Si cette dernière est surtout utilisée en régime d'irradiation, la méthode analytique est particulièrement performante en régime de refroidissement. Les données nécessaires à la mise en œuvre pratique d'un code de simulation numérique de la radioactivité seront décrites.

  3. Num1 anchors mitochondria to the plasma membrane via two domains with different lipid binding specificities

    PubMed Central

    Ping, Holly A.; Kraft, Lauren M.; Chen, WeiTing; Nilles, Amy E.

    2016-01-01

    The mitochondria–ER cortex anchor (MECA) is required for proper mitochondrial distribution and functions by tethering mitochondria to the plasma membrane. The core component of MECA is the multidomain protein Num1, which assembles into clusters at the cell cortex. We show Num1 adopts an extended, polarized conformation. Its N-terminal coiled-coil domain (Num1CC) is proximal to mitochondria, and the C-terminal pleckstrin homology domain is associated with the plasma membrane. We find that Num1CC interacts directly with phospholipid membranes and displays a strong preference for the mitochondria-specific phospholipid cardiolipin. This direct membrane interaction is critical for MECA function. Thus, mitochondrial anchoring is mediated by a protein that interacts directly with two different membranes through lipid-specific binding domains, suggesting a general mechanism for interorganelle tethering. PMID:27241910

  4. Num1 anchors mitochondria to the plasma membrane via two domains with different lipid binding specificities.

    PubMed

    Ping, Holly A; Kraft, Lauren M; Chen, WeiTing; Nilles, Amy E; Lackner, Laura L

    2016-06-06

    The mitochondria-ER cortex anchor (MECA) is required for proper mitochondrial distribution and functions by tethering mitochondria to the plasma membrane. The core component of MECA is the multidomain protein Num1, which assembles into clusters at the cell cortex. We show Num1 adopts an extended, polarized conformation. Its N-terminal coiled-coil domain (Num1CC) is proximal to mitochondria, and the C-terminal pleckstrin homology domain is associated with the plasma membrane. We find that Num1CC interacts directly with phospholipid membranes and displays a strong preference for the mitochondria-specific phospholipid cardiolipin. This direct membrane interaction is critical for MECA function. Thus, mitochondrial anchoring is mediated by a protein that interacts directly with two different membranes through lipid-specific binding domains, suggesting a general mechanism for interorganelle tethering. © 2016 Ping et al.

  5. A full-fledged micromagnetic code in fewer than 70 lines of NumPy

    NASA Astrophysics Data System (ADS)

    Abert, Claas; Bruckner, Florian; Vogler, Christoph; Windl, Roman; Thanhoffer, Raphael; Suess, Dieter

    2015-08-01

    We present a complete micromagnetic finite-difference code in fewer than 70 lines of Python. The code makes a large use of the NumPy library and computes the exchange field by finite differences and the demagnetization field with a fast convolution algorithm. Since the magnetization in finite-difference micromagnetics is represented by a multi-dimensional array and the NumPy library features a rich interface for this data structure, the code we present is an ideal starting point for the development of novel algorithms.

  6. Erratum dans le numéro de mai-juin 1988

    NASA Astrophysics Data System (ADS)

    Erratum dans le numéro de mai-juin 1988: Dans l'article sur les étoiles à baryum: p. 74, 2e colonne (après la première formule), il faut lire «A est la masse atomique» au lieu de «nombre atomique»

  7. Review and Application of ASME NOG-1 and ASME NUM-1-2000

    NASA Technical Reports Server (NTRS)

    Lytle, Bradford P.; Delgado, H. (Technical Monitor)

    2002-01-01

    The intent of the workshop is to review the application of the ASME Nuclear Crane Standards ASME NOG-1 and ASME NUM-1-2000. The ASME Nuclear Crane standards provide a basis for purchasing overhead handling equipment with enhanced safety features, based upon accepted engineering principles, and including performance and environmental parameters specific to nuclear facilities.

  8. Learning to Improve E-mail Classification with numéro interactive

    NASA Astrophysics Data System (ADS)

    Jones, Dean M.

    This paper describes some of the ways in which we use artificial intelligence technologies in numéro interactive, a Customer Interaction Management system. In particular, we focus on the classification of e-mail messages into one of multiple business categories. We describe different features that are extracted from e-mail messages to help in this classification, and the improvement in the overall classification accuracy that results from the use of each kind of feature.

  9. Simulaciones numéricas hidrodinámicas con formación estelar

    NASA Astrophysics Data System (ADS)

    Volpe, M. G.; Merchan, M.; García Lambas, D.

    Se realizan simulaciones numéricas cosmológicas utilizando el código HYDRA modificado para incluir formación estelar. A partir de éstas, se estiman diferentes parámetros observacionales como la relación Tully- Fisher, función de luminosidad y la tasa de formación estelar en función del redshift. Estos resultados son comparados con datos observacionales de diferentes autores.

  10. The SPF27 Homologue Num1 Connects Splicing and Kinesin 1-Dependent Cytoplasmic Trafficking in Ustilago maydis

    PubMed Central

    Kellner, Nikola; Heimel, Kai; Obhof, Theresa; Finkernagel, Florian; Kämper, Jörg

    2014-01-01

    The conserved NineTeen protein complex (NTC) is an integral subunit of the spliceosome and required for intron removal during pre-mRNA splicing. The complex associates with the spliceosome and participates in the regulation of conformational changes of core spliceosomal components, stabilizing RNA-RNA- as well as RNA-protein interactions. In addition, the NTC is involved in cell cycle checkpoint control, response to DNA damage, as well as formation and export of mRNP-particles. We have identified the Num1 protein as the homologue of SPF27, one of NTC core components, in the basidiomycetous fungus Ustilago maydis. Num1 is required for polarized growth of the fungal hyphae, and, in line with the described NTC functions, the num1 mutation affects the cell cycle and cell division. The num1 deletion influences splicing in U. maydis on a global scale, as RNA-Seq analysis revealed increased intron retention rates. Surprisingly, we identified in a screen for Num1 interacting proteins not only NTC core components as Prp19 and Cef1, but several proteins with putative functions during vesicle-mediated transport processes. Among others, Num1 interacts with the motor protein Kin1 in the cytoplasm. Similar phenotypes with respect to filamentous and polar growth, vacuolar morphology, as well as the motility of early endosomes corroborate the genetic interaction between Num1 and Kin1. Our data implicate a previously unidentified connection between a component of the splicing machinery and cytoplasmic transport processes. As the num1 deletion also affects cytoplasmic mRNA transport, the protein may constitute a novel functional interconnection between the two disparate processes of splicing and trafficking. PMID:24391515

  11. The dynein cortical anchor Num1 activates dynein motility by relieving Pac1/LIS1-mediated inhibition

    PubMed Central

    Lammers, Lindsay G.

    2015-01-01

    Cortically anchored dynein orients the spindle through interactions with astral microtubules. In budding yeast, dynein is offloaded to Num1 receptors from microtubule plus ends. Rather than walking toward minus ends, dynein remains associated with plus ends due in part to its association with Pac1/LIS1, an inhibitor of dynein motility. The mechanism by which dynein is switched from “off” at the plus ends to “on” at the cell cortex remains unknown. Here, we show that overexpression of the coiled-coil domain of Num1 specifically depletes dynein–dynactin–Pac1/LIS1 complexes from microtubule plus ends and reduces dynein-Pac1/LIS1 colocalization. Depletion of dynein from plus ends requires its microtubule-binding domain, suggesting that motility is required. An enhanced Pac1/LIS1 affinity mutant of dynein or overexpression of Pac1/LIS1 rescues dynein plus end depletion. Live-cell imaging reveals minus end–directed dynein–dynactin motility along microtubules upon overexpression of the coiled-coil domain of Num1, an event that is not observed in wild-type cells. Our findings indicate that dynein activity is directly switched “on” by Num1, which induces Pac1/LIS1 removal. PMID:26483554

  12. A novel patch assembly domain in Num1 mediates dynein anchoring at the cortex during spindle positioning

    PubMed Central

    Tang, Xianying; Germain, Bryan St.

    2012-01-01

    During mitosis in budding yeast, cortically anchored dynein generates pulling forces on astral microtubules to position the mitotic spindle across the mother–bud neck. The attachment molecule Num1 is required for dynein anchoring at the cell membrane, but how Num1 assembles into stationary cortical patches and interacts with dynein is unknown. We show that an N-terminal Bin/Amphiphysin/Rvs (BAR)–like domain in Num1 mediates the assembly of morphologically distinct patches and its interaction with dynein for spindle translocation into the bud. We name this domain patch assembly domain (PA; residues 1–303), as it was both necessary and sufficient for the formation of functional dynein-anchoring patches when it was attached to a pleckstrin homology domain or a CAAX motif. Distinct point mutations targeting the predicted BAR-like PA domain differentially disrupted patch assembly, dynein anchoring, and mitochondrial attachment functions of Num1. We also show that the PA domain is an elongated dimer and discuss the mechanism by which it drives patch assembly. PMID:22431751

  13. Analysis and Visualization of Multi-Scale Astrophysical Simulations using Python and NumPy

    SciTech Connect

    Turk, M.; /KIPAC, Menlo Park

    2008-09-30

    The study the origins of cosmic structure requires large-scale computer simulations beginning with well-constrained, observationally-determined, initial conditions. We use Adaptive Mesh Refinement to conduct multi-resolution simulations spanning twelve orders of magnitude in spatial dimensions and over twenty orders of magnitude in density. These simulations must be analyzed and visualized in a manner that is fast, accurate, and reproducible. I present 'yt,' a cross-platform analysis toolkit written in Python. 'yt' consists of a data-management layer for transporting and tracking simulation outputs, a plotting layer, a parallel analysis layer for handling mesh-based and particle-based data, as well as several interfaces. I demonstrate how the origins of cosmic structure--from the scale of clusters of galaxies down to the formation of individual stars--can be analyzed and visualized using a NumPy-based toolkit. Additionally, I discuss efforts to port this analysis code to other adaptive mesh refinement data formats, enabling direct comparison of data between research groups using different methods to simulate the same objects.

  14. Commande numérique de moteurs synchrones à aimants permanents de faible puissance

    NASA Astrophysics Data System (ADS)

    Robyns, B.; Fu, Y.; Labrique, F.; Buyse, H.

    1995-08-01

    High performance motion control with permanent magnet synchronous actuators needs complex control strategies. These control strategies lead frequently to algorithms requiring powerful microprocessors for their digital implementation. In this paper, we consider an approach of the control of small power permanent magnets synchronous actuators which allows to design and to implement control algorithms requiring only a reduced computation power, while maintaining satisfactory static and dynamic performance and a good insensitivity to perturbations and parameter uncertainties. L'actionnement électrique à hautes performances par moteurs synchrones à aimants permanents impose des stratégies de commande évoluées liées au comportement dynamique complexe de ces machines. Ces stratégies de commande conduisent fréquemment à des algorithmes dont l'implantation numérique exige des microprocesseurs ayant une puissance de calcul élevée. Dans cet article, nous développons une approche du problème de la commande des moteurs synchrones à aimants permanents de faible puissance qui permet de concevoir et d'implanter des algorithmes de commande ne nécessitant qu'une puissance de calcul réduite, tout en garantissant des performances statiques et dynamiques satisfaisantes ainsi qu'une bonne insensibilité aux perturbations agissant sur le système et aux incertitudes sur les paramètres.

  15. Simulation numérique du couplage thermomécanique-endommagement : application à la mise en forme

    NASA Astrophysics Data System (ADS)

    Lestriez, P.; Cherouat, A.; Mariage, J. F.; Saanouni, K.

    2002-12-01

    Ce travail est dédié à l'implémentation dans le code de calcul Abaqus d'une modélisation prédictive du couplage comportement endommagement en thermoélastoplasticité. L'objectif est la mise au point d'un “ outil ” pratique destiné à l'ingénieur pour la prévision de l'amorçage et de l'évolution de zones endommagées en présence d'effets thermiques au cours de la simulation numérique des procédés de formage des métaux. Les détails du modèle d'endommagement et de ses effets sur le comportement thermoélastoplastique sont présentés. Les aspects numériques associés au problème d'évolution couplé sont ensuite traités en détail dans le cadre des méthodes numériques utilisées dans le code en question. Quelques exemples 2D de procédés simples sont traités afin de prédire numériquement l'apparition d'un endommagement ductile dans la pièce au cours de son procédé de formage et ainsi observé son effet sur la température. Ces exemples attestent de la validité de la méthodologie proposée pour l'optimisation virtuelle des procédés de mise en forme dans le but d'éviter l'apparition de l'endommagement ou au contraire de le favoriser.

  16. Système de traitement acousto-optique de signaux numériques

    NASA Astrophysics Data System (ADS)

    Goutin, P.; Logette, P.; Rouvaen, J. M.; Bridoux, E.

    1991-10-01

    The transversal filter is a fundamental device in numerical signal processing. Among all available techniques, the acousto-optic convolution is very well matched to this function. Some penalties occur however, for very long input signals, owing to the physical configuration of the convolver and to the propagation of acoustic waves in its bulk. This calls for the study of a convenient computation algorithm taking all the constraints into account. The realization of an hybrid processor enabled us to evaluate its main characteristics using experiments like autoconvolution, F.I.R. filtering, Golay's and Barker's codes or matrix multiplication. Since the built system is actually a prototype, a number of extensions and improvements are presented, which may lead to the optimization of the processing speed. L'élément fondamental du traitement numérique du signal est le filtre transversal. Parmi les techniques utilisables, la convolution acousto-optique est particulièrement bien adaptée à cette fonction. Les difficultés de cette opération, pour le traitement d'un signal d'entrée relativement long, proviennent de la configuration propre du convoluteur et du phénomène de propagation. Celles-ci vont nécessiter l'étude d'un algorithme de calcul respectant certaines contraintes. La réalisation du processeur hybride nous a permis d'en évaluer les caractéristiques à partir des résultats expérimentaux tels que : autoconvolutions, filtrage F.I.R., corrélations, codes de Golay, codes de Barker et multiplication matricielle. Le fait même de la nature prototype du système réalisé nous amène à présenter un grand nombre d'extensions et d'améliorations qui permettent d'optimiser fortement la vitesse de traitement.

  17. Simulation numérique d'écoulement compressible dans les joints labyrinthe

    NASA Astrophysics Data System (ADS)

    Sriti, M.; Agouzoul, M.; Ouazar, D.; Micheau, P.

    1997-05-01

    The labyrinth seals are the devices used machines which serve to restrict the leakages crossing a carter (or stator) by a rotating shaft (or rotor) and to avoid the important friction to high rotation speeds. These devices, which in addition behave as shaft bearings, can modify the dynamics characteristics of the line of the shaft in which they are integrated. The present work has been carried out with the purpose of controlling better the flows within the labyrinth seals and to determine their static (leakage-pressure) and dynamic (stiffness and damping coefficients) characteristics. It's based on the development of a global numerical model, and on the integration of the obtained correlations by 3D axisymmetric computation in this model. Les joints labyrinthe sont des dispositifs utilisés dans les machines, ils servent à limiter les fuites à la traversée d'un carter (ou stator) par un arbre tournant (ou rotor) et éviter le frottement important aux vitesses de rotation élevées. Ces dispositifs, qui de plus, se comportent comme des paliers, peuvent modifier les caractéristiques dynamiques de la ligne d'arbre dans laquelle ils sont intégrés. Le travail présenté a été effectué dans le but de mieux maîtriser les écoulements dans les joints labyrinthe et de déterminer leurs caractéristiques statiques (débit-pression) et dynamiques (coefficients de raideur et d'amortissement). Il s'appuie sur le développement d'outils numériques intégrant dans les calculs globaux des résultats de calculs locaux (3D axisymétriques).

  18. NumSBT: A subroutine for calculating spherical Bessel transforms numerically

    NASA Astrophysics Data System (ADS)

    Talman, J. D.

    2009-02-01

    A previous subroutine, LSFBTR, for computing numerical spherical Bessel (Hankel) transforms is updated with several improvements and modifications. The procedure is applicable if the input radial function and the output transform are defined on logarithmic meshes and if the input function satisfies reasonable smoothness conditions. Important aspects of the procedure are that it is simply implemented with two successive applications of the fast Fourier transform, and it yields accurate results at very large values of the transform variable. Applications to the evaluation of overlap integrals and the Coulomb potential of multipolar charge distributions are described. Program summaryProgram title: NumSBT Catalogue identifier: AANZ_v2_0 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AANZ_v2_0.html Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 476 No. of bytes in distributed program, including test data, etc.: 4451 Distribution format: tar.gz Programming language: Fortran 90 Computer: Generic Operating system: Linux Classification: 4.6 Catalogue identifier of previous version: AANZ_v1_0 Journal reference of previous version: Comput. Phys. Comm. 30 (1983) 93 Does the new version supersede the previous version?: No Nature of problem: This program is a subroutine which, for a function defined numerically on a logarithmic mesh in the radial coordinate, generates the spherical Bessel, or Hankel, transform on a logarithmic mesh in the transform variable. Accurate results for large values of the transform variable are obtained, that would not be otherwise obtainable. Solution method: The program applies a procedure proposed by the author [1] that treats the problem as a convolution. The calculation then requires two applications of the fast Fourier transform method. Reasons for

  19. 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.

  20. "Projeto Rios" (Rivers Project) a methodology of classroom of the future (northern Portugal)

    NASA Astrophysics Data System (ADS)

    Almeida, Ana

    2013-04-01

    The rivers and the surrounding land drained by them are very important wildlife habitats. The water itself provides the environment for plants and animals, while the banks and nearby land support creatures such as otters, water lizards, dragonflies and a variety of water-loving plants. Using a different teaching strategy, on the latest three years, students of the eighth grade of the EB 2.3 Agrela school have been implementing the project "Nós e o Leça" (We and the river Leça). This initiative is part of a nationwide project in Portugal, the "Projeto Rios", which is a tool that aims the adoption and monitoring of a 500 meter river section, promoting society's awareness for the problems and the need of protection and recovery of the riparian systems. These students adopted a section of the Leça River, which is the one that is passing nearby our school. Throughout the mentioned school years, the children made field trips for characterization, knowledge and observation of some happenings on the section adopted, with the aid of a complete kit of materials (galoshes, loupes, tweezers, trays, fishnets, tape measure, tape of pH...). Token fields for identifications of plants and animals and specific data sheets/questionnaires, were also used and fulfilled. While in the river, it is done the collection of macro invertebrates to conclude about the water quality of the section under study. Youth also detect disturbances in the balance of the riverine ecosystem, either naturally occurring or of human origin. Aiming the sustained development and the citizenship education, the students performed a final action for improvement, which consisted in the uprooting of an invasive plant, in this case "the herb-of-fortune" and also gathering the "trash" founded along the adopted stretch of the river. Back to the classroom, we selected photographs and the collected data is treated and discussed to produce information (summaries, reports, tables, charts,...) which will be published

  1. Les caractéristiques de la collaboration mère-enfant à 48 mois dans deux tâches de numération

    PubMed Central

    Caron, Lisbeth; Parent, Sophie; Normandeau, Sylvie; Tremblay, Richard E.; Séguin, Jean R.

    2017-01-01

    RÉSUMÉ Afin d’étudier les connaissances relatives au développement de la numération à l’âge préscolaire, cette recherche examine les manifestations de ces compétences dans un contexte de collaboration mère-enfant. La collaboration entre les mères et leur enfant de 4 ans (n = 193) est observée et analysée dans le contexte de deux tâches de numération. Les résultats complètent les études antérieures sur les compétences maîtrisées par les enfants d’âge préscolaire en performance individuelle en identifiant les compétences en cours d’acquisition exercées avec le soutien de la mère. Les résultats montrent ainsi que les mères ajustent les exigences de la tâche aux compétences de leur enfant afin d’étayer l’exercice de leurs compétences : elles modèlent les compétences numéraires nouvelles et elles soutiennent l’exercice par l’enfant des compétences maîtrisées ou en voie de l’être. Les résultats indiquent également qu’au-delà de l’encadrement de la participation et du transfert progressif des responsabilités cognitives à l’enfant, l’étayage maternel en contexte de numération favorise aussi le soutien de la motivation de l’enfant et le maintien d’un climat affectif harmonieux. PMID:28566773

  2. Commande numérique simplifiée et robuste d'actionneurs asynchrones de faible puissance

    NASA Astrophysics Data System (ADS)

    Robyns, B.; Labrique, F.; Buyse, H.

    1996-08-01

    High performance motion control with AC actuators needs complex control strategies. The control strategies lead frequently to algorithms requiring powerful microprocessors for their digital implementation. In a previous paper published in the “Journal de Physique III”, we evolved an approach of the control of small power permanent magnets synchronous actuators which allows to design and to implement control algorithms requiring only a reduced computation power, while maintaining satisfactory static and dynamic performance and a good insensitivity to perturbations and parameter uncertainties. In this paper, we extend this approach to the control of small power induction actuators. L'actionnement électriques à hautes performances au moyen de moteurs à courant alternatif impose des stratégies de commande évoluées liées au comportement dynamique complexe de ces machines. Ces stratégies de commande conduisent fréquemment à des algorithmes dont l'implantation numérique exige des microprocesseurs ayant une puissance de calcul élevée. Dans un précédent article publié dans le Journal de Physique III, nous avons développé une approche du problème de la commande des moteurs synchrones à aimants permanents de faible puissance qui nous a permis de concevoir et d'implanter des algorithmes de commande ne nécessitant qu'une puissance de calcul réduite, tout en garantissant des performances statiques et dynamiques satisfaisantes ainsi qu'une bonne insensibilité aux perturbations agissant sur le système et aux incertitudes sur les paramètres. Dans cet article, nous étendons cette approche au cas de la commande des moteurs asynchrones de faible puissance.

  3. Projeto do sistema anti-ressonante da fiação dos transdutores para o detector Mario Schenberg

    NASA Astrophysics Data System (ADS)

    Vieira, S. J.., Jr.; Melo, J. L.

    2003-08-01

    O detector de ondas gravitacionais Mario Schenberg está sendo projetado e construído pelo grupo Gráviton. Sua construção está ocorrendo no Laboratório de Estado Sólido e Baixas Temperaturas (LESBT) da Universidade de São Paulo, na cidade de São Paulo. Esse detector possui uma massa ressonante esférica de cobre-alumínio, com 65 cm de diâmetro, pesando aproximadamente 1150 Kg, suspensa por um sistema de isolamento vibracional, que se encontra em fase de testes preliminares. A real eficácia desse sistema, entretanto, só poderá ser comprovada quando o detector estiver aparelhado com, pelo menos, um transdutor eletromecânico de altíssima sensibilidade acoplado à massa ressonante. Neste momento, não só este sistema de isolamento vibracional será posto em teste, como o do projeto da fiação que transporta os sinais de microondas até os transdutores e destes para a pré-amplificação. Apesar dessa fiação ter sido projetada para não apresentar nenhum contato com a superfície esférica da antena, de maneira a não haver nenhuma transmissão de ruído vibracional do laboratório para esta, deve-se minimizar o ruído microfônico produzido nessa fiação por oscilações mecânicas, uma vez que ela não utiliza nenhum sistema de isolamento vibracional. Com o intuito de resolver este problema, projetamos uma estrutura, formada por pequenos cilindros conectados por barras, a qual não terá nenhuma ressonância mecânica na faixa de freqüências de interesse para detecção (3000 - 3400 Hz). Desta forma, as vibrações nessa faixa não serão amplificadas. O projeto foi feito usando iterativamente, de maneira a otimizar os resultados obtidos, o programa de elementos finitos Msc/Nastran. Através de simulações feitas neste programa, determinamos os parâmetros geométricos ideais a serem utilizados, os quais proporcionam a maior região espectral de interesse livre de ressonâncias.

  4. Contribuições para o projeto da câmara infravermelha Spartan do telescópio SOAR

    NASA Astrophysics Data System (ADS)

    Laporte, R.; Jablonski, F.; Loh, E.

    2003-08-01

    Como parte de uma colaboração entre a Divisão de Astrofísica do INPE, IAG-USP, Instituto do Milênio MEGALIT e a Michigan State University, trabalhamos durante um ano junto ao grupo do Dr. Edwin Loh (MSU) no projeto e detalhamento de diversos subsistemas para a câmara infravermelho Spartan do telescópio SOAR. Trata-se de um imageador para as bandas J, H e K que explora todo o potencial, em termos de qualidade de imagem e campo de visada, fornecido pelo sistema de óptica adaptativa de primeira ordem do telescópio SOAR. Projetamos soluções detalhadas para os subsistemas de rodas de filtros/grismas/máscaras de Lyot; subsistema de compactação do mosaico de detectores em duas versões distintas; subsistema de alimentação de Nitrogênio líquido. Mantivemos sempre uma supervisão geral sobre todas as partes restantes e os respectivos envelopes volumétricos produzindo soluções para a integração de todos os componentes. Neste trabalho, ilustramos as principais contribuições e fornecemos um resumo do estado atual do instrumento.

  5. Comparaison de lois de commande. Régulation numérique de courant dans l'association convertisseur-machine

    NASA Astrophysics Data System (ADS)

    Kalinowski, D.; Bergmann, C.

    1991-05-01

    This article deals with a comparison of different numerical command laws, as regards dynamical characteristics and robustness, for direct current motor control. The power converter, which uses bi-directional switches, connect directly the three-phase source to the servo-motor. Simulations, compared with experimental results, show the variations of the dynamical characteristics regarding perturbations, that is to say: model parameters are not constant, the converter is not linear, and there are numerical saturations. Cet article présente différentes stratégies de commande, sur un critère de rapidité/robustesse, pour une régulation numérique du courant dans un servo-moteur à courant continu. Le convertisseur de puissance, à la base de la structure, est constitué d'interrupteurs bidirectionnels et réalise l'alimentation directe de la charge à travers un réseau triphasé. Les simulations, confrontées aux résultats expérimentaux, montrent la très nette dépendance des caractéristiques dynamiques finales vis-à-vis des éléments perturbateurs à savoir : la variation des paramètres constituants le modèle, les non-linéarités des convertisseurs et les saturations numériques.

  6. Découpage de métaux fins : caractérisation expérimentale modélisation et simulation numérique

    NASA Astrophysics Data System (ADS)

    Lemiale, V.; Picart, P.; Meunier, S.

    2002-12-01

    Les travaux présentés concernent l'analyse du comportement des métaux fins en découpage. Un dispositif expérimental a été réalisé au L.M.A.R.C. Il permet de découper des échantillons d'épaisseur comprise entre 0.1 mm et 0.5 mm. Une méthodologie de caractérisation complète du produit découpé est proposée et discutée. Parallèlement, un outil de simulation numérique basé sur la Méthode des Eléments Finis a été développé. Le couplage avec les mesures expérimentales permet de prédire l'aspect final du produit découpé. Les différentes approches envisagées sont détaillées sur des exemples numériques et la confrontation avec les résultats issus d'expérience est effectuée et discutée.

  7. On the tradeoffs of programming language choice for numerical modelling in geoscience. A case study comparing modern Fortran, C++/Blitz++ and Python/NumPy.

    NASA Astrophysics Data System (ADS)

    Jarecka, D.; Arabas, S.; Fijalkowski, M.; Gaynor, A.

    2012-04-01

    The language of choice for numerical modelling in geoscience has long been Fortran. A choice of a particular language and coding paradigm comes with different set of tradeoffs such as that between performance, ease of use (and ease of abuse), code clarity, maintainability and reusability, availability of open source compilers, debugging tools, adequate external libraries and parallelisation mechanisms. The availability of trained personnel and the scale and activeness of the developer community is of importance as well. We present a short comparison study aimed at identification and quantification of these tradeoffs for a particular example of an object oriented implementation of a parallel 2D-advection-equation solver in Python/NumPy, C++/Blitz++ and modern Fortran. The main angles of comparison will be complexity of implementation, performance of various compilers or interpreters and characterisation of the "added value" gained by a particular choice of the language. The choice of the numerical problem is dictated by the aim to make the comparison useful and meaningful to geoscientists. Python is chosen as a language that traditionally is associated with ease of use, elegant syntax but limited performance. C++ is chosen for its traditional association with high performance but even higher complexity and syntax obscurity. Fortran is included in the comparison for its widespread use in geoscience often attributed to its performance. We confront the validity of these traditional views. We point out how the usability of a particular language in geoscience depends on the characteristics of the language itself and the availability of pre-existing software libraries (e.g. NumPy, SciPy, PyNGL, PyNIO, MPI4Py for Python and Blitz++, Boost.Units, Boost.MPI for C++). Having in mind the limited complexity of the considered numerical problem, we present a tentative comparison of performance of the three implementations with different open source compilers including CPython and

  8. Projeto observatórios virtuais: educação através de telescópios robóticos

    NASA Astrophysics Data System (ADS)

    Santana, P. H. S.; Shida, R. Y.

    2003-08-01

    O principal objetivo do projeto Observatórios Virtuais é o ensino na área de ciências através de atividades práticas desenvolvidas em colaboração entre instituições de pesquisa em astronomia e escolas de ensino médio e fundamental. Este ano deverá ser concluída a implantação do programa piloto de estudos, pesquisas e observação astronômica direta, com utilização em tempo real de telescópios robóticos, que assim funcionarão como "observatórios virtuais". O objetivo pedagógico das atividades práticas baseadas nas imagens atronômicas é desenvolver as habilidades e competências dos alunos no uso do método científico. Para isso, serão realizados projetos interdisciplinares, a partir de observações astronômicas, já que a astronomia é uma área interdisciplinar por excelência. Essas atividades terão níveis diferenciados de complexidade, que podem ser adequados aos vários graus do ensino e realidades regionais. Será dada ênfase ao desenvolvimento e aplicação em São Paulo, onde atua a equipe do IAG/USP. Como resultados apresentados no presente trabalho, temos a criação de um software em português para o processamento de imagens obtidas através de CCDs e a elaboração de material para as atividades educacionais relacionadas.

  9. Projeto educação em ciências com observatórios virtuais: a participação da Escola Moppe no período 2000-2003

    NASA Astrophysics Data System (ADS)

    Wuensche, C. A.; Gavioli, E.; Oliveira, A. L. P. R. S.; da Silva, C.; Cardoso, H. P.; Estácio, S.

    2003-08-01

    O projeto Educação em Ciências com Observatórios Virtuais foi concebido pelo Instituto Astronômico e Geofísico da USP, agregando diversas instituições de ensino e pesquisa no país para desenvolver competências diversas na educação fundamental, média e superior utilizando a astronomia como ferramenta multidisciplinar. Este trabalho descreve a participação da MOPPE, escola-piloto do INPE no projeto, no período de 2000-2003. Serão apresentadas 1) a criação de um clube de ciências (1999 a 2001) cujo tema foi a colonização de Marte e 2) a ementa de astronomia trabalhada com as 7a. e 8a. séries do ensino fundamental. A proposta do projeto Colonizando Marte foi estudar diversos aspectos de uma missão interplanetária e construir experiementos que permitissem quantificar esses aspectos. Os resultados obtidos incluiram apresentações nas SBPC Jovem em 2000 e 2001. Discutiremos também as ementas de astronomia trabalhadas desde 2001 e o envolvimento dos alunos com atividades ligadas a astronomia, fora da aula de ciências. A inclusão de astronomia no currículo das últimas séries motivou a participação de mais alunos culminando com a conquista de duas medalhas para alunos da 7a. série na Olimpiada Brasileira de Astronomia em 2002. Houve também um aumento no número de participantes na OBA 2003 e nos projetos de astronomia mais elaborados nas Feira de Ciências de 2001 e 2002. Destacamos em 2003 a inclusão da MOPPE no projeto TIE - Telescopes in Education - da NASA, que utiliza o telescópio do Observatório de Mount Wilson (EUA) para observações remotas em projetos pedagógicos para o ensino de astronomia.

  10. Object-oriented numerics with FOSS: comparing PyPy & NumPy, GCC/Clang & Bitz++ and Gfortran

    NASA Astrophysics Data System (ADS)

    Jarecka, Dorota; Arabas, Sylwester; Fijalkowski, Maciej; Jaruga, Anna; Del Vento, Davide

    2013-04-01

    Employment of object-oriented programming (OOP) techniques may help to improve code readability, and hence its auditability and maintainability - both being arguably crucial for scientific software. OOP offers, in particular, the possibility to reproduce in the program code the mathematical "blackboard abstractions" used in the literature. There exist a number of free and open-source tools allowing to obtain this goal without sacrificing performance. An OOP implementation of the MPDATA advection algorithm used as a core of weather, ocean and climate modelling systems will serve as an example for briefly highlighting some relevant recent FOSS developments including: - NumPy support in the PyPy just-in-time compiler of Python. - the Blitz++ library coupled with the C++11 support in GCC and Clang; - support for OOP constructs from Fortran 2003/2008 in GFortran; A brief overview of other performance-related packages for Python like Numba and Cython will be also given. This poster will describe and extends key findings presented in http://arxiv.org/abs/1301.1334

  11. Méthode semi-numérique de pré-dimensionnement des machines à aimants permanents et à bobinage global

    NASA Astrophysics Data System (ADS)

    Ben Ahmed, A.; Lucidarme, J.; Desesquelles, P. F.

    1995-06-01

    The electrical machines can be characterized by a global scale relative to the inducted coil, and a local one relative to the teeth dimensions. In the case of synchronous structures with centralized coil, excited by split magnets, the characterized ratio of the two previous scales is largely higher than one. The complete parametrical study of the machine that uses a large torque is particularly weighty and complex. In this paper, we propose a simple and fast pre-designing methodology. It considers different limitations and constraints such as demagnetization, overheating, dimensions,... This methodology is based on an elementary pattern and is limited to the linear regime. It combines a numerical calculation of the magnetic field -using a 2D finite elements methodology-, and a semi-analytical approximation of the constraints. We first present the performances' intrinsic formalism, and the models relative to the constraints. Then, we analyze the influence of some parameters on the limit and optimal machine's performances. Finally, we compare the obtained results to the tests we have done on a cylindrical machine with ferrite magnets. Les machines électriques peuvent être caractérisées par une échelle globale relative à l'enroulement induit et une échelle locale relative aux dimensions dentaires. Dans les structures synchrones à bobinage global excitées par des aimants fractionnés, le rapport caractéristique des deux échelles précitées est très supérieur à l'unité. L'étude paramétrique complète de la machine utilisant un couplage fort, s'avère particulièrement lourd et complexe. Dans cet article, nous proposons une méthode de pré-dimensionnement simple, rapide et qui prend en compte différentes limitations ou contraintes telles que la désaimantation, l'échauffement, l'encombrement etc. Cette méthode, basée sur un modèle cellulaire et se limitant au régime linéaire, combine un calcul numérique de champ par la méthode des

  12. Etude analytique et numérique de la réponse en vibration à hautes fréquences d'éprouvettes de fatigue vibratoire des métaux. Application aux aciers

    NASA Astrophysics Data System (ADS)

    Ben Aich, A.; El Kihel, B.; Kifani, A.; Sahban, F.

    1994-07-01

    In the present paper, the so-called " ultrasonic fatigue " or fatigue at very high frequency has been studied in the materials elastic behaviour case while neglecting the thermal effects that influence the mechanical fields. The determination of mechanical fields and specimen resonance length has been done both analytically and numerically. The numerical method used for this calculation is the finite element method (FEM). Martensitic steel " Soleil A2 " and austenitic steel " ICL 472 BC " have been considered in order to compare the two methods (analytical and numerical). It is shown that a perfect convergence is obtained between the two solutions. Dans le présent travail, la fatigue vibratoire a été étudiée dans le cas du comportement élastique des matériaux en négligeant les effets thermiques pouvant influencer les champs mécaniques. La détermination de ces champs et de la longueur de résonance des éprouvettes de fatigue a été faite analytiquement et numériquement. Le calcul numérique effectué se base sur la méthode des éléments finis. Dans le but d'une comparaison des solutions analytiques et numériques, deux aciers ont été considérés : un acier martensitique (Soleil A2) et un acier austénitique de type 18-10 (ICL 472 BC). Une parfaite convergence est obtenue entre les deux solutions.

  13. Apports de la simulation numérique pour I'identification du comportement rhéologique des alliages d'aluminium par essai de bipoinçonnement

    NASA Astrophysics Data System (ADS)

    Gélin, J. C.; Ghouati, O.; Shahani, R.

    1994-04-01

    The modelling of rheological behaviour of aluminium alloys for hot metal forming is based on experimental tests. The plane strain compression tests under various thermomechanical conditions (effective strain, effective strain rate, temperature, ...) are used for such a procedure. It is shown that numerical modelling combined with classical approaches can advantageously help in testing interpretation. It is shown, for instance, that the friction coefficient or the thermal exchanges between the specimen and the dies can be accurately fitted. Furthermore, a comparison between the numerical results and micrographical observations shows that it is possible to use numerical results with a good confidence. L'identification du comportement rhéologique des alliages d'aluminium en vue de leur mise en forme à chaud par laminage nécessite la réalisation d'essais expérimentaux. Les essais de bipoinçonnement entre poinçons parallélépipédiques, réalisés sous diverses conditions thermomécaniques (déformation effective, vitesse de déformation effective et température) ont été retenus pour une telle identification. On montre que la simulation numérique des essais permet de corriger de manière substantielle les méthodes d'identification classiques basées sur des approches rigides viscoplastiques. On montre par exemple que les simulations numériques permettent d'ajuster le coefficient de frottement ou les conditions d'échange thermiques. Enfin, une comparaison entre résultats numériques et analyses micrographiques montre que l'on peut utiliser les résultats des simulations en vue de la prévision des évolutions microstructurales des alliages considérés.

  14. Um Projeto de Intervenção nos Espaços de Exposições do Planetário do Parque do Ibirapuera

    NASA Astrophysics Data System (ADS)

    Elias, D. S.; Amaral, L. H.; de Araújo, C. F., Jr.; Matsuura, O. T.; Voelzke, M. R.

    2005-08-01

    Cada vez mais a humanidade, em sua imensa maioria, está alheia às próprias conquistas. A insatisfação com esta realidade tem levado muitos pesquisadores, instituições, empresas e governos a procurar formas alternativas de acompanhar e transmitir todo este acervo científico cultural à sociedade, buscando a melhoria da qualidade da divulgação científica e contribuindo para o processo de cultura e alfabetização científica. Não há tempo nem espaço nos limitados planos curriculares do ensino médio e mesmo nos programas de ensino que propiciem a cultura científica e o acompanhamento do vertiginoso progresso científico e tecnológico atual. Neste sentido, a educação formal escolar precisa ser complementada ou acrescida de uma educação informal, extra-escolar, que possa oferecer à sociedade o que a escola não pode oferecer. A interação do público com museus, feiras de ciências, planetários, exposições científicas e/ou culturais é de grande importância para a aquisição e difusão de conhecimentos relacionados ao mundo científico. Reconhecidamente como um modelo de alfabetização científica esses ambientes promovem uma interação social capaz de propiciar de forma efetiva uma melhor relação ensino-aprendizagem com o público. Partindo desta realidade a Universidade Cruzeiro do Sul e a Escola Municipal de Astronomia (EMA) vêm desenvolvendo um projeto de intervenção no espaço em torno do Planetário do Parque do Ibirapuera com o objetivo de se implantar um ambiente de aprendizagem motivador e desafiador que promova a popularização de conteúdos relacionados à astronomia, astrofísica e cosmologia. Busca-se, também, a aproximação e interação do público com exposições que estão sendo implementadas no planetário. Considerando que se trata de um projeto de mestrado em fase inicial o objetivo do presente trabalho é apresentar a concepção básica e os critérios que estão sendo utilizados do ponto de vista pedag

  15. Traitement des conditions aux limites intérieures et extérieures pour la simulation numérique unidimensionnelle de l'écoulement de l'eau dans les canaux à surface libre

    NASA Astrophysics Data System (ADS)

    Abdallah, M.; Vazquez, J.; Mose, R.; Zoaeter, M.

    2005-05-01

    Dans ce papier, on décrit le traitement des conditions aux limites intérieures et extérieures couplé avec la méthode explicite aux différences finies de Roe pour le développement d'une modélisation unidimensionnelle qui sert à résoudre les équations de Saint-Venant décrivant l'écoulement de l'eau à surface libre. Les deux méthodes les plus utilisées pour trouver la solution aux nœuds intérieurs et extérieurs définissant les conditions aux limites intérieures et extérieures d'un schéma numérique sont décrites et comparées dans deux exemples: Le premier traite le problème du ressaut hydraulique et le second décrit l'écoulement de l'eau au dessus des seuils. Deux types de discrétisation du terme source, pointwise et upwind, sont considérés et comparés aussi. Les résultats obtenus et comparés avec la solution analytique dans le cas du ressaut, et avec les résultats numériques déjà publiés dans le cas des seuils, montrent l'avantage de la méthode des caractéristiques sur la méthode de l'extrapolation pour les conditions aux limites, et la discrétisation upwind du terme source sur la discrétisation pointwise.

  16. Modélisation mathématique et simulation numérique de l'écoulement de l'eau à surface libre sur une pente à fond mobile

    NASA Astrophysics Data System (ADS)

    Abdallah, M.; Vazquez, J.; Mose, R.; Zoaeter, M.

    2005-05-01

    Les équations de Saint-Venant modélisant l'écoulement de l'eau à surface libre sont applicables lorsque le fond du lit du canal est fixe. Dans un écoulement sur une pente à fond mobile, la cote (niveau) du fond varie selon la relation d'Exner qui est une équation de continuité pour la phase solide. Cette équation doit être couplée avec les équations de Saint-Venant qui décrivent l'écoulement de la phase liquide. Dans ce papier, le schéma de MacCormack qui est de type différence finie explicite est utilisé pour trouver une solution numérique du système couplé de Saint-Venant Exner, ce schéma qui est du second ordre est un schéma robuste pouvant capter les chocs et les discontinuités dans la solution sans aucun traitement spécial. Ce schéma est appliqué à deux processus où il y a une évolution du fond: la dégradation et l'aggradation dans les canaux alluviaux.

  17. Principe de commande numérique temps réel d'un onduleur à modulation de largeur d'impulsion sur charges non linéaires

    NASA Astrophysics Data System (ADS)

    Maussion, Pascal; Faucher, Jean; Grandpierre, Marcel

    1994-06-01

    This paper proposes a new method for the real time digital control of a P.W.M. inverter, used in U.P.S. (Uninterruptible Power Supply). The output voltage is compared to a sinusoidal reference, to compute in real time through a digital controller, the pulse width of the same interval. This strategy is verified through computer simulations and provides a very fast compensation of disturbances, caused by non linear loads such as rectifiers and triac loads, with low T.H.D. (Total Harmonic Distortion) and fondamental control. Cet article propose une méthode nouvelle et originale pour la commande numérique temps réel d'un onduleur MLI sur charges non linéaires. Un asservissement de la valeur moyenne instantanée de la tension de sortie est réalisé par l'intermédiaire d'un correcteur proportionnel dérivé et d'une boucle d'anticipation. Les variations de la charge sont prises en compte par précompensation ce qui permet d'obtenir de bons résultats vérifiés par simulation, tant pour le taux de distorsion harmonique que pour la valeur du terme fondamental.

  18. Calcul couple fluide/structure avec ANSYS : étude numérique et expérimentale d'une plaque élastique en contact avec un fluide lourd compressible

    NASA Astrophysics Data System (ADS)

    Sigrist, J. F.; Laine, C.; Peseux, B.

    2002-12-01

    Une préoccupation constante de tout industriel est la maîtrise des marges de dimensionnement de ses structures. Le recours aux techniques de calcul scientifique permet en phase de conception détaillée un dimensionnement au plus juste des structures, tout en respectant les différentes contraintes de conception (exigences fonctionnelles, conditions d'environnement, aspects réglementaires). Une meilleure maîtrise des marges passe donc par une meilleure connaissance de l'outil de calcul (précision intrinsèque, mise en œuvre de techniques de calcul plus ou moins élaborées) et la prise en compte d'une réalité physique plus complexe (avec par exemple un couplage entre différents phénomènes physiques) pour une meilleure représentativité du calcul. Une démarche globale de recherche et développement a été mise en place au sein du Service Scientifique et Technique de l'établissement DCN de Nantes Indret pour répondre à ce besoin. Nous présentons ici un exemple d'application pour le calcul de structures en présence de fluide. Cette étude numérique et expérimentale nous permet de valider conjointement le processus de calcul en bureau d'étude et les méthodes de mesure sur site dans le domaine de l'analyse fréquentielle de structures mouillées.

  19. Analyse numérique du problème de déplacement du noyau fondu en soudage par points de tôles à différentes épaisseurs

    NASA Astrophysics Data System (ADS)

    Benkedda, Y.; Tahar Chaouch, K.; Ibrir, B.

    2005-05-01

    Le soudage par résistance par points est une technique d'assemblage très répandue, en particulier dans l'industrie automobile, parce qu'elle est rapide, fiable et bon marché. Pour cela, la réalisation d'un point de soudure de qualité reste encore une préoccupation de l'industrie, surtout lorsqu'il s'agit de souder des tôles à différentes épaisseurs. Les premiers modèles mathématiques et expérimentaux qui couvrent ces différents aspects, sont principalement dirigés vers les modèles de transfert de chaleur ou vers les phénomènes de surfaces (modèles de surfaces) ; ces derniers, sont un problème d'importance, puisqu'ils interviennent chaque fois qu'un transfert de chaleur s'effectue entre deux solides accolés. Les physiciens ont étudie expérimentalement la réponse de la région de contact de deux solides aux pulsations de courant. Ils ont montré que le contact possède une résistance de resserrement due aux aspérités de surface, et que la température moyenne à l'interface des deux solides sous un chargement uniforme produit un adoucissement local lequel fait augmenter la région de contact. Le but de ce travail est consacré à l'analyse de l'influence des épaisseurs de tôles sur la position du noyau fondu. Expérimentalement, il a été montré que lorsque le rapport des épaisseurs est compris entre 1/1 et 1/10, le noyau fondu se déplace vers la pièce la plus épaisse. Ce phénomène peut s'expliquer à partir d'une étude thermique. Nous proposons donc, de résoudre le problème de transfert thermique transitoire associé au processus de soudage par points moyennant une méthode numérique. Ce modèle est capable de prédire l'évolution du noyau fondu en fonction des paramètres du procédé à savoir l'intensité de soudage et temps de soudage, ainsi que la répartition thermique en chaque point de l'assemblage.

  20. Calcul numérique accéléré de mesures de performance sur les modèles Markoviens appliqués aux systèmes informatiques et de télécommunications

    NASA Astrophysics Data System (ADS)

    Ghaddar, A.; Sinno, N.

    2005-05-01

    La complexité du phénomène de files d'attente dans les systèmes informatiques et télécommunications nécessite leur simulation par des modèles Markoviens pour les mesures de performance, mesure des délais d'attente au niveau des routeurs pour le modèle informatique et l'étude de la gestion des appels téléphoniques pour le modèle des circuits téléphoniques. L'optimisation des méthodes numériques de résolution des équations relatives à ces deux modèles va permettre d' ídentifier les critères de convergence rapide vers les états stationnaires correspondant à ces mesures.

  1. Apport de la simulation numérique à la compréhension des mécanismes d'interaction de cavités dans le cadre de la modélisation de l'endommagement ductile sous sollicitation dynamique

    NASA Astrophysics Data System (ADS)

    Roy, G.; Buy, F.; Llorca, F.

    2002-12-01

    L'étude présentée s'inscrit dans le cadre d'une démarche menant à la construction d'un modèle analytique ou semi analytique de comportement élasto-visco-plastique endommageable, applicable aux chargements rencontrés en configuration d'impact violent et générant de l'écaillage ductile. La prise en compte des effets de compressibilité et de micro inertie est essentielle pour modéliser la phase de croissance. Des simulations numériques globales de la structure et locales à l'échelle des hétérogénéités permettent d'évaluer les niveaux de sollicitations dans les zones susceptibles de s'endommager, dévaluer des critères analytiques de germination de l'endommagement et de comprendre les mécanismes d'interaction entre les défauts. Les effets micro inertiels et de compressibilité sont ainsi mis en évidence dans les phases de germination et de coalescence des micro défauts. II s'agit ici d'une illustration non exhaustive de travaux engagés au CEA Valduc sur le tantale, dans le cadre d'une thèse [10]. Un programme matériaux en partenariat CEA-CNRS sur la modélisation multi échelles du comportement de structures a également été initié dans ce contexte.

  2. Experimental Measurements of a High Reynolds Num- ber Adverse Pressure Gradient Turbulent Boundary Layer

    NASA Astrophysics Data System (ADS)

    Atkinson, Callum; Amili, Omid; Stanislas, Michel; Cuvier, Christophe; Foucaut, Jean-Marc; Srinath, Sricharan; Laval, Jean-Philippe; Kaehler, Christian; Hain, Rainer; Scharnowski, Sven; Schroeder, Andreas; Geisler, Reinhard; Agocs, Janos; Roese, Anni; Willert, Christian; Klinner, Joachim; Soria, Julio

    2016-11-01

    The study of adverse pressure gradient turbulent boundary layers is complicated by the need to characterise both the local pressure gradient and it's upstream flow history. It is therefore necessary to measure a significant streamwise domain at a resolution sufficient to resolve the small scales features. To achieve this collaborative particle image velocimetry (PIV) measurements were performed in the large boundary layer wind-tunnel at the Laboratoire de Mecanique de Lille, including: planar measurements spanning a streamwise domain of 3.5m using 16 cameras covering 15 δ spanwise wall-normal stereo-PIV measurements, high-speed micro-PIV of the near wall region and wall shear stress; and streamwise wall-normal PIV in the viscous sub layer. Details of the measurements and preliminary results will be presented.

  3. Photométrie stellaire avec un Appareil Photo Numérique (APN)

    NASA Astrophysics Data System (ADS)

    Bruno, Alain

    2006-06-01

    Ce document donne quelques conseils pour la prise de vue et présente la méthodologie à suivre dans le traitement des images pour obtenir une photométrie stellaire de qualité. Une simulation permet d'établir les conditions d'utilisation optimale d'un APN pour la photométrie. Quelques essais expérimentaux sur le ciel confirment la méthodologie utilisée dans le traitement des images et quantifie la précision photométrique obtenue.

  4. Efficient Memory Access with NumPy Global Arrays using Local Memory Access

    SciTech Connect

    Daily, Jeffrey A.; Berghofer, Dan C.

    2013-08-03

    This paper discusses the work completed working with Global Arrays of data on distributed multi-computer systems and improving their performance. The tasks completed were done at Pacific Northwest National Laboratory in the Science Undergrad Laboratory Internship program in the summer of 2013 for the Data Intensive Computing Group in the Fundamental and Computational Sciences DIrectorate. This work was done on the Global Arrays Toolkit developed by this group. This toolkit is an interface for programmers to more easily create arrays of data on networks of computers. This is useful because scientific computation is often done on large amounts of data sometimes so large that individual computers cannot hold all of it. This data is held in array form and can best be processed on supercomputers which often consist of a network of individual computers doing their computation in parallel. One major challenge for this sort of programming is that operations on arrays on multiple computers is very complex and an interface is needed so that these arrays seem like they are on a single computer. This is what global arrays does. The work done here is to use more efficient operations on that data that requires less copying of data to be completed. This saves a lot of time because copying data on many different computers is time intensive. The way this challenge was solved is when data to be operated on with binary operations are on the same computer, they are not copied when they are accessed. When they are on separate computers, only one set is copied when accessed. This saves time because of less copying done although more data access operations were done.

  5. SRC_Num_TDOA: Multiple speech sources' number and their TDOA Estimation from a stereo recorded mixture

    NASA Astrophysics Data System (ADS)

    Bouafif, Mariem; Lachiri, Zied

    We consider the problem of sources counting and Time Delays of Arrival (TDOAs) estimation from a two-channel reverberant mixture in the underdetermined case. Most existing estimating TDOA implementations are based on a prior knowledge about the number of involved sources in the mixture. Whereas, we develop a new function that only takes the observed mixtures as input. In this paper, we describe the basic of the proposed function, its development and its evaluation on real recorded mixtures with reference to widely used methods. Through simulations and real environment experiments, we indicate that our method outperforms other state-of-the-art TDOA methods in terms of accuracy, while being significantly more efficient in terms of computational complexity.

  6. Informacion Bibliografica: Ano 3, Num. 9, Enero-Febrero, 1972 (Bibliographic Information: Volume 3, Number 9, January-February 1972).

    ERIC Educational Resources Information Center

    Martinez Martinez, Antonio L., Ed.

    This bulletin contains several articles on various topics concerning information science. The first article is a report on the November 1971 Seminar on Documentation and Pedagogical Information in Latin America held in Panama. The second article, entitled "Informatica," provides a discussion of information science by three Soviet writers;…

  7. Comparación de diferentes rutinas de integración numérica de EDOs

    NASA Astrophysics Data System (ADS)

    Darriba, L. A.; Giordano, C. M.; Cincotta, P. M.

    In this work we will compare the efficiency both in computing time and precision of an innovative software, which integrates differential equations by means of the Taylor method, developed by Jorba & Zou, against other two integrators, one based on a Runge-Kutta method (DOPRI8) and the other on a predictor-corrector method (Bulirsch-Stoer, BS hereafter). To do this, we performed integrations of the corresponding ordinary differential equations (ODEs) in order to compute the MEGNO, the largest Lyapunov Characteristic Number (LCN) and the equations of motion in a model of the potential of a triaxial elliptical galaxy, with a considerably high precision on the approximate solutions (10-15 ). We show here some of the results and the conclusions that arise from its analysis. (More details could be seen in Darriba et al., which is in preparation). FULL TEXT IN SPANISH

  8. Modélisation et simulation numérique du changement de phase liquide vapeur en cavité

    NASA Astrophysics Data System (ADS)

    Daru, Virginie; Duluc, Marie-Christine; Le Maître, Olivier; Juric, Damir; Le Quéré, Patrick

    2006-01-01

    A model for the simulation of boiling flow with phase change in a closed cavity is presented. A front-tracking method is used to deal with the liquid-vapor interface. The liquid phase is incompressible while the vapor phase is weakly compressible and obeys to the perfect gas law. This model can deal with large density ratio ( ρ/ρ≃1000) flows while accounting for the saturation curve. Computations are performed on a 1D validation case, idealizing a pressure cooker. Results are compared with a low Mach number approximation. To cite this article: V. Daru et al., C. R. Mecanique 334 (2006).

  9. Sur le traitement des collisions lors de la simulation numérique des écoulements particulaires

    NASA Astrophysics Data System (ADS)

    Parthasarathy, Prabu

    A novel collision strategy has been implemented for simulation of particulate flows using a Lagrange multiplier/fictitious domain method. In this Note, we present this new collision strategy that is based on Newton's principle of transfer of momentum. With this method, we have simulated motion of two discs under the influence of gravity in a viscous fluid, and the motion of 1008 discs under the effect of gravity. To cite this article: P. Parthasarathy, C. R. Mecanique 330 (2002) 77-81.

  10. Magnesium nebulization utilization in management of pediatric asthma (MagNUM PA) trial: study protocol for a randomized controlled trial.

    PubMed

    Schuh, Suzanne; Sweeney, Judy; Freedman, Stephen B; Coates, Allan L; Johnson, David W; Thompson, Graham; Gravel, Jocelyn; Ducharme, Francine M; Zemek, Roger; Plint, Amy C; Beer, Darcy; Klassen, Terry; Curtis, Sarah; Black, Karen; Nicksy, Darcy; Willan, Andrew R

    2016-05-24

    Up to 30 % of children with acute asthma are refractory to initial therapy, and 84 % of this subpopulation needs hospitalization. Finding safe, noninvasive, and effective strategies to treat this high-risk group would substantially decrease hospitalizations, healthcare costs, and the psycho-social burden of the disease. Whereas intravenous magnesium (Mg) is effective in severe refractory asthma, its use is sporadic due to safety concerns, with the main treatment goal being to prevent intensive care unit admission. In contrast, nebulized Mg is noninvasive, allows higher pulmonary drug concentrations, and has a much higher safety potential due to the lower rate of systemic delivery. Previous studies of inhaled Mg show disparate results due to the use of unknown/inefficient delivery methods and other methodological flaws. The study is a randomized double-blind controlled trial in seven Canadian pediatric Emergency Departments (two-center pilot 2011 to 2014, Canada-wide November 2014 to December 2017). The trial will include 816 otherwise healthy children who are 2 to 17 years old, having had at least one previous wheezing episode, have received systemic corticosteroids, and have a Pediatric Respiratory Assessment Measure (PRAM) ≥ 5 points after three salbutamol and ipratropium treatments for a current acute asthma exacerbation. Eligible consenting children will receive three experimental treatments of nebulized salbutamol with either 600 mg of Mg sulfate or placebo 20 min apart, using an Aeroneb Go nebulizer, which has been shown to maximize pulmonary delivery while maintaining safety. The primary outcome is hospitalization within 24 h of the start of the experimental therapy for persistent respiratory distress or supplemental oxygen. Secondary outcomes include all-cause hospitalization within 24 h, PRAM, vital signs, number of bronchodilator treatments by 240 min, and the association between the difference in the primary outcome between the groups, age, gender, baseline PRAM, atopy, and "viral induced wheeze" phenotype (Fig. 1). If effective, inhaled Mg may represent an effective strategy to minimize morbidity in pediatric refractory acute asthma. Unlike previous works, this trial targets nonresponders to optimized initial therapy who are the most likely to benefit from inhaled Mg. Future dissemination of results will include knowledge translation, incorporation into a Cochrane Review, presentation at scientific meetings, and a peer-reviewed publication. NCTO1429415 , registered 2 September 2011.

  11. Simulation numérique en électronique de puissance. Méthode dela topologie variable

    NASA Astrophysics Data System (ADS)

    Matt, D.; Prieur, F.; Glaize, C.

    1994-01-01

    This paper presents an original development of a most efficient model for representing switches in power electronics simulation. This model, quite simple after all, considers semiconductor components as perfect interruptors, leading to a variable topology analysis of the studied circuit. This circuit then becomes purely passive, the way of connecting passive components among themselves depending on the sermiconductors' states for each configuration. This concept, though it is not new, is rarely used, due to complications it induces for the construction of equations. The approach we presents aims to automatically eliminate this problem and make the most of the interests of the model. New possibilities are offered for perfecting efficient programs of power electronics simulation. L'article présente une méthode de mise en équation automatique des circuits de l'électronique de puissance basée sur le concept de la topologie variable. Cette méthode, dont les principes ont fait l'objet de nombreuses publications dans les années 70 [1-4], utilise un modèle de semi-conducteur parfait se comportant comme un simple interrupteur. La topologie du circuit évolue au gré des commutations des semi-conducteurs et est de ce fait "variable". Malgré ses nombreux avantages, cette méthode n'a jamais connu le succès mérité en raison des nombreuses difficultés liées à l'élimination des semi-conducteurs du circuit. L'article présenté propose une méthodologie de mise en équation entièrement automatique s'appuyant sur une analyse topologique des circuits. Elle permet de s'affranchir de bon nombre des difficultés inhérentes au concept. Cette méthodologie appliquée à un simulateur de convertisseurs statiques donne actuellement de très bons résultats avec un avantage appréciable tant dans la rapidité de calcul que dans la précision et fiabilité des résultats obtenus. L'analyse topologique du circuit effectuée permet de plus la détection automatique des défauts d'association de sources/charges.

  12. Estudio numérico de modos MHD en arcos magnéticos de la baja corona solar

    NASA Astrophysics Data System (ADS)

    Cécere, M.; Costa, A.; Lehner, L.; Reula, O.

    Performing numerical simulations with a numerical technique named divergence cleaning, we characterize the plasma dynamics and the modes that propagate in structured media, i.e., with small values of β = P_{g} / P_{M} and large magnetic Reynolds number. We show preliminary results that confirm others described by the coronal seismology, i.e. modes obtained with cylindrical geometry and in the line tied condition. This allows to adjust the numerical method to study the non-dissipative decay of fast modes in media of high Reynolds number.

  13. Projeto Vida no Vale: universal access to water and sanitation in the North East of Minas Gerais (Brazil)

    NASA Astrophysics Data System (ADS)

    Kauark-Leite, L.; Vinçon-Leite, B.; Deroubaix, J. F.; Loireau, A.; Silveira, D.; Haddad, E.

    2008-08-01

    In the rural areas of the developing countries, the access to water supply and sanitation services is still largely inadequate. Poor governance of the water sector is frequently singled out as a cause and reforms are required. Studies analyzing the great diversity of restructuring efforts currently being undertaken in the water sector have not succeeded in determining the most appropriate institutional and economic framework for such reforms. Moreover they underline the lack of documentation on actual projects and call for concrete models and tools for improving water and sanitation services (WSS) and for adapting water utility practice to real conditions. In this context, the Vida no Vale (Life in the Valley) project is aimed at bringing universal access to WSS for all inhabitants of both urban and rural areas, in the north-eastern area of the Brazilian State of Minas Gerais. The project takes sustainable development as its guiding principle, and relies on the joint implementation of an innovative technical design, a governance model involving public participation and subsidiarity, and an economic structure combining financial viability and social equity. Designed at a consistent geographical and hydrological scale, it includes the creation of a regional subsidiary of the existing state water company as a keystone element. The institutional organisation also relies on the creation of a public board consisting of the 92 municipalities of the project region and of the State of Minas Gerais. This board will be in charge of the system's governance. This paper presents the first step of the project (2006), consisting of a feasibility study and the implementation of 9 pilot sub-projects. During the feasibility study, the supply, demand and capacity to pay for water services were defined, existing infrastructure appraised, the necessary amount of investment assessed and an innovative operational model and a sustainable management system, including civil society participation, defined. The main features of the Vida no Vale project have been tested in 9 pilot sub-projects, and implemented in municipalities chosen for their low Human Development Index and for the lack of WSS, in both urban and rural areas. A second phase corresponding to the project's final implementation will run from 2007 to 2011. The Vida no Vale project design resulted in a logical and extensive framework which could be used for developing similar WSS projects in other poor, rural regions, its adaptiveness being a key feature for taking into account the specific, local conditions.

  14. Projeto Vida no Vale: universal access to water and sanitation in the North East of Minas Gerais (Brazil)

    NASA Astrophysics Data System (ADS)

    Kauark-Leite, L.; Vinçon-Leite, B.; Deroubaix, J. F.; Loireau, A.; Silveira, D.; Haddad, E.

    2007-08-01

    In the rural areas of the developing countries, the access to water supply and sanitation services is still largely inadequate. Poor governance of the water sector is frequently singled out as a cause and reforms are required. Studies analyzing the great diversity of restructuring efforts currently being undertaken in the water sector have not succeeded in determining the most appropriate institutional and economic framework for such reforms. Moreover they underline the lack of documentation on actual projects and call for concrete models and tools for improving water and sanitation services (WSS) and for adapting water utility practice to real conditions. In this context, the Vida no Vale (Life in the Valley) project is aimed at bringing universal access to WSS for all inhabitants of both urban and rural areas, in the north-eastern area of the Brazilian State of Minas Gerais. The project takes sustainable development as its guiding principle, and relies on the joint implementation of an innovative technical design, a governance model involving public participation and subsidiarity, and an economic structure combining financial viability and social equity. Designed at a consistent geographical and hydrological scale, it includes the creation of a regional subsidiary of the existing state water company as a keystone element. The institutional organisation also relies on the creation of a public board consisting of the 92 municipalities of the project region and of the State of Minas Gerais. This board will be in charge of the system's governance. The paper will present the first step of the project (2006), consisting of a feasibility study and the implementation of 9 pilot sub-projects. During the feasibility study, the supply, demand and capacity to pay for water services were defined, existing infrastructure appraised, the necessary amount of investment assessed and an innovative operational model and a sustainable management system, including civil society participation, defined. The main features of the Vida no Vale project have been tested in 9 pilot sub-projects, and implemented in municipalities chosen for their low Human Development Index and for the lack of WSS, in both urban and rural areas. A second phase corresponding to the project's final implementation will run from 2007 to 2011. The ongoing successful accomplishment of the Vida no Vale project would make it an exemplary and replicable model for other poor regions.

  15. An Institutional Approach to First-Year Adjustment: The "Projeto FEUP" Case Study of a Portuguese University

    ERIC Educational Resources Information Center

    Mouraz, Ana; Sousa, Armando

    2016-01-01

    This article intends to debate the institutional modes of first-year adjustment to higher education. Specifically, the aim is to analyze and consider the need to include social and academic integration activities in the curricular programs. The presented contributions are based on the investigations over the case study course that was studied…

  16. Projeto Grafico, Illustracao e Leitura do Texto Poetico (Graphic Project, Illustration and Reading of the Poetic Text).

    ERIC Educational Resources Information Center

    Camargo, Luis

    1997-01-01

    Discusses the presence of graphic organization in books, which creates peculiar, constitutive reading signals regarding the nature of illustration. Analyzes the graphic organization of five different illustrations of poems. (PA)

  17. An Institutional Approach to First-Year Adjustment: The "Projeto FEUP" Case Study of a Portuguese University

    ERIC Educational Resources Information Center

    Mouraz, Ana; Sousa, Armando

    2016-01-01

    This article intends to debate the institutional modes of first-year adjustment to higher education. Specifically, the aim is to analyze and consider the need to include social and academic integration activities in the curricular programs. The presented contributions are based on the investigations over the case study course that was studied…

  18. The wavelet transform: a digital eyepiece to improve our sky vision (French Title: La transformation en ondelettes : un oculaire numérique pour mieux voir le ciel)

    NASA Astrophysics Data System (ADS)

    Bijaoui, A.

    2008-10-01

    Since the beginning of the computer era, astronomers applied many mathematical tools in order to process their data. Among them, the Fourier transform was extensively applied for the denoising, the deconvolution and for the image reconstruction. In years '80 new tools were introduced in order to take into account the non stationarity of the signal to be processed. Among them the wavelet transform emerged as a fundamental tool for the analysis and for the processing of astronomical signals. In this paper, after a short historical introduction, the different wavelet transforms are introduced from the multiresolution analysis. Its fundamental algorithm, called ilter bank, is described, with an application in the case of the Haar transform. Another transformation algorithm, called the à trous algorithm, which plays an important role in the astronomical signal processing, is also given. Pyramidal transforms and the continuous wavelet transform are also briely described. Some astronomical applications are given in the case of images at a faint level of photons. In conclusion, some new tracks for new transforms are indicated, the purpose being to get a more and more sparse representation of the observed signals.

  19. Modèle d'aide à la gestion des eaux souterraines (MAGES). 2. Validation numérique du modèle de transport

    NASA Astrophysics Data System (ADS)

    Porel, Gilles; Delay, Frédérick; Banton, Olivier

    1998-11-01

    MAGES is a software developed at INRS-Eau (Canada) for forecasting pollution hazards in groundwater. The transport model uses stationary truncated temporal moment equations instead of the classical time dependent advection-dispersion equation. The aim of this work is to propose a numerical validation of the method by comparison with both analytical solutions in homogeneous medium and a sophisticated lagrangian model of transport in heterogeneous medium. It is shown that the temporal moment equations perform well, while saving on computation. This gives MAGES some abilities in water management problems which compensate for the poor knowledge of the transport parameters through numerous stochastic simulations.

  20. L'aléa tsunami en Polynésie française : apports de la simulation numérique

    NASA Astrophysics Data System (ADS)

    Sladen, Anthony; Hébert, Hélène; Schindelé, François; Reymond, Dominique

    2007-04-01

    French Polynesia is frequently struck by transoceanic tsunamis originating from around the Pacific. The numerical modelling of five scenarios defined among threatening source areas has been performed on seven Polynesian sites. The results show that the Marquesian bays are consistently most affected, while the sites in Tahiti and Rurutu are significantly exposed, though less heavily. The tsunami hazard has been then mapped for whole Polynesia. Major tsunamis are expected to hit Marquesas, and Rurutu (Australes), but less frequently. An elevated hazard level is defined for the other Australes and for several Society Islands (especially Tahiti). Tuamotu atolls and other Society Islands are only moderately exposed.

  1. Data Management and Analysis in Support of the Army Family Research Program

    DTIC Science & Technology

    1992-09-01

    Agreement 114 SPBAREMP Num 8 492 Spouse-Barriers to Employment 113 SPBEMPAR Num 8 484 Spouse-Barriers to Employment for Parent 115 SPCAREER Num 8 500...WEIGHT 141 SPPCHSAT Num 8 708 Spouse Parent -Child Satisfaction 150 SPREDWT Num 8 756 SPOUSE READINESS WEIGHT 116 SPRELADJ Num 8 508 Spouse Relocation...spouse 6 SP782G Num 4 24 Count on a co-worker 7 SP 82H Num 4 28 Count on staff of an Army service agency 8 SP_821 Num 4 32 Count on parents or other

  2. Historia Oral, Experiencias de Aprendizagem e Enraizamento Sociocultural--Um Projeto em Curso (Oral History, Learning Experiences, and Sociocultural Setting--A Project in Process).

    ERIC Educational Resources Information Center

    Vidigal, Luis

    1995-01-01

    Examines education and childhood in Portugal. Uses oral history methods in an educational context, exploring oral statements pedagogically. Considers these statements especially suitable to maintaining aspects of collective memory and social identity, reinforcing students' national and regional identities. Suggests this is very important in…

  3. Historia Oral, Experiencias de Aprendizagem e Enraizamento Sociocultural--Um Projeto em Curso (Oral History, Learning Experiences, and Sociocultural Setting--A Project in Process).

    ERIC Educational Resources Information Center

    Vidigal, Luis

    1995-01-01

    Examines education and childhood in Portugal. Uses oral history methods in an educational context, exploring oral statements pedagogically. Considers these statements especially suitable to maintaining aspects of collective memory and social identity, reinforcing students' national and regional identities. Suggests this is very important in…

  4. Telescópio de pequeno porte como suporte ao ensino em cidades com intensa poluição luminosa II

    NASA Astrophysics Data System (ADS)

    Pereira, P. C. R.; Santos-Júnior, J. M.; Cruz, W. S.

    2003-08-01

    Para a maioria dos estudantes, sua passagem pelo ensino formal fundamental envolve a transmissão de fatos que devem ser guardados para um exame, a habilidade para lembrar fórmulas e, eventualmente, a repetição de experimentos que devem produzir resultados exigidos pelo professor. O resultado deste modelo de ensino, ao longo dos anos, é conhecido por todos: desconhecimento e descontentamento, por parte dos estudantes, de temas relativos ao papel e aos processos da ciência. Acreditamos que a Astronomia, pelo seu caráter observacional, é uma das áreas do conhecimento que pode contribuir neste cenário. A Fundação Planetário da Cidade do Rio de Janeiro possui um telescópio Meade LX-200 (25cm) que, juntamente com as câmeras CCD ST-7E e ST8E, tem sido utilizado em projetos voltados aos estudantes do ensino médio desde o ano 2000. Tais projetos envolvem a condução de um projeto de pesquisa observacional num nível apropriado, e possibilitam o contato com técnicas e novas tecnologias: computador, software para manipulação de dados e gráficos, programas de tratamento e redução de dados, uso de equipamentos óptico-eletrônicos (telescópio e CCD), bem como o processo de aquisição de conhecimento. Dentro da proposta dos anos anteriores, priorizamos projetos de uma noite, ou seja, procuramos trabalhar com fenômenos que apresentem variabilidade com intervalo de recorrência relativamente curto. Em todos os casos, optamos pela fotometria diferencial, que tem se mostrado bastante eficiente para o céu luminoso como o da cidade do Rio de Janeiro. Neste painel, apresentamos alguns dos projetos desenvolvidos no último ano, com 25 estudantes. Apresentamos os resultados da observação da variável pulsante AI Vel (V = 6,6) e da variável cataclísmica FO Aqr (V = 13,5), e do monitoramento do trânsito da lua de Júpiter, Europa, ocorrido em 30 de abril de 2003. As curvas de luz produzidas para as primeiras estão concordantes com as da literatura, assim

  5. Análise da aplicação e dos resultados do modelo OPM3® para a área da saúde

    PubMed Central

    Augusto dos Santos, Luis; de Fátima Marin, Heimar

    2015-01-01

    Esta pesquisa procurou analisar se um modelo de questionário criado por uma comunidade internacional de gerenciamento de projetos e se é aplicavél a organizações voltadas a área de saúde. O modelo OPM3® (Organizational Project Management Maturity Model) foi criado para que organizações de qualquer área ou porte pudessem identificar a presença, ou ausência, de boas práticas de gerenciamento. O objetivo da aplicação desse modelo é avaliar sempre a organização e não o entrevistado. No presente artigo, são apresentados os resultados da aplicação desse modelo em uma organização que possuía produtos e serviços de tecnologia da informação aplicados à área de saúde. Este estudo verificou que o modelo é aplicável de forma rápida e que a organização analisada possuía um número expressivo de boas práticas. PMID:26924862

  6. Looking Back and Ahead: 20 Years of Technologies for Language Learning

    ERIC Educational Resources Information Center

    Godwin-Jones, Robert

    2016-01-01

    Over the last 20 years Robert Godwin-Jones has written 48 columns on "Emerging Technologies"; an additional six columns have been written by guest columnists. Several topics have been re-examined in regular intervals of approximately five years, namely digital literacy (Vol. 4, Num. 2; Vol. 10, Num. 2; Vol. 14, Num. 3; Vol. 19, Num. 3)…

  7. Looking Back and Ahead: 20 Years of Technologies for Language Learning

    ERIC Educational Resources Information Center

    Godwin-Jones, Robert

    2016-01-01

    Over the last 20 years Robert Godwin-Jones has written 48 columns on "Emerging Technologies"; an additional six columns have been written by guest columnists. Several topics have been re-examined in regular intervals of approximately five years, namely digital literacy (Vol. 4, Num. 2; Vol. 10, Num. 2; Vol. 14, Num. 3; Vol. 19, Num. 3)…

  8. Método numérico das diferenças finitas no domínio do tempo aplicado a ondas Alfvén em plasma astrofísico

    NASA Astrophysics Data System (ADS)

    Dos Santos, L. C.; Kintopp, J. A.; Jatenco-Pereira, V.; Opher, R.

    2003-08-01

    Ondas Alfvén em plasma astrofísico têm sido objeto de intenso estudo nas últimas décadas pelo fato de apresentarem papel importante em muitas áreas de pesquisa na astrofísica. Particularmente são importantes no mecanismo de aquecimento da coroa solar; em ventos estelares; em jatos galácticos e extragalácticos; em discos protoestelares, etc. A formulação para diferenças finitas no domínio do tempo (FDTD), aplicada a plasma magnetizado é desenvolvida para estudo das propriedades de ondas Alfvén em três dimensões (3D-FDTD). O método é aplicado inicialmente a um plasma homogêneo e isotérmico imerso em uma região com campo magnético externo B0, que sofre uma pequena perturbação. Uma vez gerada a onda, esta perturbação é retirada e, então analisamos a evolução temporal das ondas, bem como a forma de seu amortecimento.

  9. Modèle d'aide à la gestion des eaux souterraines (MAGES). 1. Théorie du modèle numérique de transport des contaminants

    NASA Astrophysics Data System (ADS)

    Delay, Frédérick; Banton, Olivier; Porel, Gilles

    1998-08-01

    MAGES is software for forecasting pollution hazards of groundwater which is in the process of development at INRS-Eau (Canada). The main distinctive feature of the model is the use of stationary truncated temporal moment equations instead of the classical time dependent advection-dispersion equation to solve the transport of contaminants. The aim of this work is to describe the theory of truncated temporal moment equations and to show how the curves of the concentration versus time can be calculated from temporal moments. The discrete method used to solve the equations and its stability is also discussed.

  10. Implementación numérica del efecto Hall, difusión ambipolar y difusión de Ohm en un código MHD

    NASA Astrophysics Data System (ADS)

    Krapp, L.; Benítez-Llambay, P.

    2016-08-01

    The goal of this work is to present an extension to the public magnetohydrodynamic code fargo3d via the implementation of a new physical module which includes the non-ideal magnetohydrodynamics terms, known as Hall effect and Ohmic and ambipolar diffusions. We present a set of simulations which allows to study the damping of Alfven waves by ambipolar diffusion, the Alfven wave splitting by Hall effect, and the behaviour of the magnetorotational instability under the Hall effect and Ohmic resistivity. The results of these simulations validate our implementation.

  11. Prevailing Lexical-Stylistic Features in Emirati Language Learners' Digital Discourse (Caractéristiques lexicales stylistiques dominantes dans le discours numérique des apprenants en langue émirienne)

    ERIC Educational Resources Information Center

    Grigoryan, Tsoghik

    2015-01-01

    Today's language classroom is undergoing an irreversible hyperbole and one of the most powerful drivers of this transformation is ICT. Digital classroom not only exposes the learners to grammatical language of linguistics, but rather the everyday life of the language in use (Thurlow & Mroczek, 2011). The aim of this study was to explore the…

  12. Application de la transformation de Fourier fractionnaire à la restitution numérique des hologrammes des particules éclairées par un faisceau gaussien elliptique astigmate

    NASA Astrophysics Data System (ADS)

    Nicolas, F.; Coëtmellec, S.; Brunel, M.; Allano, D.; Lebrun, D.; Janssen, A. J. E. M.

    2006-10-01

    Cette étude concerne la diffraction d'un faisceau gaussien elliptique astigmate par une particule opaque. Nous montrons que la transformation de Fourier fractionnaire bidimensionnelle est un outil mathématique bien adapté à l'analyse des hologrammes des particules enregistrés par un tel faisceau.

  13. Analyse par simulation numérique du développement de l'instabilité électro-convective d'une couche de liquide diélectrique infinie soumise à une injection unipolaire

    NASA Astrophysics Data System (ADS)

    Traoré, Philippe; Perez, A.; Koulova-Nenova, D.; Romat, H.

    2009-09-01

    In this article electroconvective phenomenon, which take place in a dielectric liquid layer submitted to an unipolar injection, are studied by numerical simulations means. For the first time the full and coupled resolution of the Electro-Hydro-Dynamic equations are achieved. The results are compared with those coming from stability analysis especially for the linear and non-linear criteria in strong and weak injection cases. The hysterical behavior of the development of this instability is accurately reproduced. To cite this article: P. Traoré et al., C. R. Mecanique 337 (2009).

  14. Etude numérique et expérimentale de l'evaporation d'une ou plusieurs gouttes de mélange de carburants dans un écoulement chauffé

    NASA Astrophysics Data System (ADS)

    Daïf, A.; Ali Chérif, A.; Bresson, J.; Sarh, B.

    1995-10-01

    The vaporization of one or two multi-component fuel droplets in hot air-stream is presented. A thermal wind tunnel with experimental channel has been designed to develop an experimental process. Firstly, the comparison between experimental results and numerical data is presented for the case of an isolated multi-component droplet. The numerical method is based on the resolution of heat and mass transfer equations between the droplet and the gas stream. This model includes the effect of Stephan flow, the effect of variable thermophysical properties of the components, and the non-unitary Lewis number in the gas film. The experimental results show the micro-explosion phenomenon observed in the liquid phase of multi-component droplet at low temperature. The experimental case of two pure or multi-component droplets in interaction is also presented. On présente un article de synthèse sur l'évaporation d'une ou deux gouttes de carburants à plusieurs composants dans un écoulement d'air chaud. Un dispositif expérimental constitué d'une soufflerie thermique, avec veine d'expérimentation, est réalisé pour permettre cette étude. Pour le cas d'une goutte isolée, une comparaison expérience-calcul est entreprise. Le principe de la méthode numerique consiste en la résolution des équations de transfert de masse et de chaleur entre la goutte et l'écoulement. Ce modèle prend en compte les effets de l'écoulement de Stephan, les variations des propriétés thermophysiques des composants dans les deux phases et la valeur du nombre de Lewis différente de l'unité dans le film de vapeur. Outre l'analyse plus approfondie qu'apporte la confrontation entre le calcul et l'expérience, les résultats expérimentaux montrent le phénomène de micro-explosion observé à l'intérieur de la goutte liquide. Le cas expérimental de deux gouttes en interaction est abordé qu'il s'agisse de gouttes de carburant pur ou de mélange.

  15. Women of Hispanic Origin in the Labor Force. Facts on Working Women No. 89-1 = La mujer de origen hispano en la fuerza laboral. Facts on Working Women Num. 89-1S.

    ERIC Educational Resources Information Center

    Women's Bureau (DOL), Washington, DC.

    Data on Hispanic women in the labor force between 1978 and 1988 show the following: (1) 6.5 percent of the women in the work force in 1988 were of Hispanic origin (3.6 million); (2) the median age of Hispanic women was 26.1 years, 2-5 years younger than Black or White women; (3) 66 percent of Hispanic women participate in the labor force, a higher…

  16. Étude numérique de la topologie du champ résiduel de déplacements d'un milieu ductile fissuré : influence sur la formation des caustiques

    NASA Astrophysics Data System (ADS)

    Pop, Octavian; Valle, Valéry; Cottron, Mario

    2004-04-01

    The purpose of our work is to illustrate that, by using a simple optical method (phenomenon of caustics) it is possible to locate, near the crack tip, the boundaries of the plastic zone for a cracked body. In this Note, we show that, through numerical simulations, in the case of a ductile SEN specimen, loaded in mode I and following a loading history, the appearance and development of the plastic zone involves irreversible topological changes in the vicinity of the crack tip, made obvious by caustics shape variations. To cite this article: O. Pop et al., C. R. Mecanique 332 (2004).

  17. Determining the Location of an Observer with Respect to Aerial Photographs

    DTIC Science & Technology

    1988-12-01

    at gradient-array (+ 1 j) (+ k I)) threshold) (mett (arot temp-array 1 k) O)M (cond (4- tarot temp-array I k) 1) Isetq sum (* sum tempt 2 (+ I (* 3 k)f...aetq num-edges (+ num-edges 1)))))) (setf taret unique-index-num-array j 1) sum) tsett tarot num-edges-array j 1) num-edges))))) 1 This function

  18. Usina de ciências: um espaço pedagógico para aprendizagens múltiplas

    NASA Astrophysics Data System (ADS)

    Martin, V. A. F.; Poppe, P. C. R.; Orrico, A. C. P.; Pereira, M. G.

    2003-08-01

    Entendemos que o Ensino de Astronomia é especialmente apropriado para motivar os alunos e aprofundar conteúdos em diversas áreas do conhecimento, pois envolve temas ligados à Física, Matemática, Química, Computação, Tratamento de Imagens e Instrumentação de Alta Precisão, além daqueles pertinentes as áreas de Geografia, História e Antropologia. Contudo, apesar do caráter interdisciplinar que esta ciência possui, a realidade atual é que a maioria dos professores em sala de aula não foram devidamente capacitados, durante o período de formação acadêmica, para ministrar conteúdos de Astronomia nos atuais Ensinos Fundamental e Médio. Neste trabalho, discutiremos de maneira ampla, num primeiro momento, a realidade do atual ensino de ciências praticado no Estado da Bahia, apontando por dependência administrativa, o crescimento e a redução do número de escolas, da taxa de analfabetismo por faixa etária, da escolarização, do atendimento, da aprovação, reprovação e abandono, de equipamentos e laboratórios e o grau de formação dos nossos atuais professores em pleno exercício de atividade docente. Num segundo momento, discutiremos o papel do Observatório Astronômico Antares/UEFS dentro desse contexto, ou seja, suas ações implementadas ao longo dos últimos anos e em particular, o recente projeto de extensão Ensino e Difusão de Astronomia, financiado pela Fundação Vitae, que procura traduzir no lúdico, no brincar de ciências, um espaço pedagógico para aprendizagens múltiplas. Neste, o papel do professor multiplicador associado ao laboratório de kits didáticos, de fácil construção e manipulação (alguns dos quais serão mostrados), perfazem os principais veículos para o desenvolvimento de conhecimentos, atitudes, habilidades e valores que preparam os nossos alunos para a carreira técnico-científica e para sua participação crítica e criativa na Sociedade.

  19. Quelques problèmes de géométrie énumérative, de matrices aléatoires, d'intégrabilité, étudiés via la géometrie des surfaces de Riemann

    NASA Astrophysics Data System (ADS)

    Biffard, Benjamin R.

    Single-beam echosounders are an inexpensive, practical and non-invasive means of remote sensing the seabed. Ideally, the common single-beam echosounder should be able to tell fishers, navigators, engineers and scientists what the seabed consists of in addition to water depth. Low-frequency underwater acoustic systems (<10 kHz) can do this in some circumstances, but are expensive, offer limited resolution and potentially hazardous to marine mammals. High-frequency systems, such as single and multi-beam echosounders, are very effective at mapping bathymetry, but do not characterize the seabed directly. Instead, these systems divide the seabed into self-similar segments or classes, and then rely on ground-truth data (usually sediment grab samples) to assign seabed-type labels such as sand, etc., to the classes. However, inadequate and inaccurate ground-truth is a major problem. Single-beam seabed classification methods also suffer from a lack of discriminatory power and from artefacts such as water depth and seabed slope. The cause of these problems is that the methods lack a basis in physics and are mainly statistical. Then, the central objective in this dissertation is to develop physics-based methods to improve classification and to address the problem of ground-truth by inferring seabed characteristics directly from the acoustics. An overview of current methods is presented along with case studies of single-beam surveys to introduce the current seabed classification method called QTC VIEW(TM) and to identify specific problems. A physical basis is established in scattering and geometrical theories and observations of field and model data. This leads to new classification and characterization methods that overcome the shortcomings of current seabed classification methods. Advancements also include new physical models of echosounding. The new methods are presented, implemented and evaluated. Highlights of experimental results include a new testbed located in Patricia Bay, British Columbia. The testbed consists of exhaustive ground-truth, surveys and novel controlled experiments with various single-beam echosounders, ranging in frequency from 12 to 200 kHz. Simulated echo time series data from the numerical BORIS model and a new analytic model are used to augment the testbed. Evaluation of experimental results shows the new physics-based methodology improves seabed classification significantly and enables seabed characterization by an uncalibrated single-beam echosounder.

  20. Modèle numérique de terrain comme outil pour contrôler et mesurer l'érosion de ravinsModelos digitales de elevación como un instrumento para seguir y medir erosión por cárcavas

    NASA Astrophysics Data System (ADS)

    Betts, Harley D.; DeRose, Ronald C.

    This paper describes the use of Digital Elevation Models (DEMs), constructed from sequential aerial photographs, as a tool for measuring gully erosion in a geomorphologically unstable environment. The technique is applied to a case study that examines erosion in 26 gullies in two study areas in the upper Waipaoa catchment, eastern North Island, New Zealand. Changes over two consecutive time periods, ranging in length from 14.0 years to 33.2 years, were studied at each site, drawing on available historical aerial photography. Several key aspects of the method used are described and discussed in detail, and recommendations are made for future application of DEMs for assessment of landscape change. DEM-measured gully degradation rates are directly proportional to the square root of the gully area.From this relationship it should be possible to rapidly estimate gully erosion at a catchment scale on the basis of gully areas alone. DEM-based measurement techniques, together with appropriate consideration for the sensitivity of the method, have significant cost and efficiency advantages over manual approaches to erosion measurements.

  1. Evaluation de la qualité de modèles numériques de terrain dérivés par interférométrieEvaluación de la calidad de modelos digitales de elevación derivados por interferometría

    NASA Astrophysics Data System (ADS)

    Gens, Rüdiger

    One of the most important uses of SAR interferometry is in the generation of digital elevation models (DEMs). However, a standard procedure for quality estimation of DEMs does not exist. This paper proposes a method of quality estimation using an adapted Monte Carlo simulation, which has the advantage that it could be used in areas where appropriate reference DEMs are not available. This paper also addresses interferometric processing, with special emphasis on the influence of the input parameters. Practical implementation of the proposed technique is shown on a data set from Lower Saxony in Germany. The error map generated, which is a measure of the quality of the DEM, is also presented. For further analysis of the critical aspects of quality, a reference DEM has also been used.

  2. Simulations numériques de différentes méthodes d'éléments finis pour les problèmes de contact avec frottementNumerical implementation of different finite element methods for contact problems with friction

    NASA Astrophysics Data System (ADS)

    Baillet, Laurent; Sassi, Taoufik

    2003-11-01

    In this Note, we propose an efficient numerical treatment for solving contact problems with friction between deformable bodies. The discretized normal and tangential constraints at the candidate contact interface are expressed by using either continuous piecewise linear or piecewise constant Lagrange multipliers. Several numerical studies corresponding to this choice are achieved in the PLAST2 code. To cite this article: L. Baillet, T. Sassi, C. R. Mecanique 331 (2003).

  3. Busca de estruturas em grandes escalas em altos redshifts

    NASA Astrophysics Data System (ADS)

    Boris, N. V.; Sodrã©, L., Jr.; Cypriano, E.

    2003-08-01

    A busca por estruturas em grandes escalas (aglomerados de galáxias, por exemplo) é um ativo tópico de pesquisas hoje em dia, pois a detecção de um único aglomerado em altos redshifts pode por vínculos fortes sobre os modelos cosmológicos. Neste projeto estamos fazendo uma busca de estruturas distantes em campos contendo pares de quasares próximos entre si em z Â3 0.9. Os pares de quasares foram extraídos do catálogo de Véron-Cetty & Véron (2001) e estão sendo observados com os telescópios: 2,2m da University of Hawaii (UH), 2,5m do Observatório de Las Campanas e com o GEMINI. Apresentamos aqui a análise preliminar de um par de quasares observado nos filtros i'(7800 Å) e z'(9500 Å) com o GEMINI. A cor (i'-z') mostrou-se útil para detectar objetos "early-type" em redshifts menores que 1.1. No estudo do par 131046+0006/J131055+0008, com redshift ~ 0.9, o uso deste método possibilitou a detecção de sete objetos candidatos a galáxias "early-type". Num mapa da distribuição projetada dos objetos para 22 < i' < 25 observou-se que estas galáxias estão localizadas próximas a um dos quasares e há indícios de que estejam aglomeradas dentro de um área de ~ 6 arcmin2. Se esse for o caso, estes objetos seriam membros de uma estrutura em grande escala. Um outro argumento em favor dessa hipótese é que eles obedecem uma relação do tipo Kormendy (raio equivalente X brilho superficial dentro desse raio), como a apresentada pelas galáxias elípticas em z = 0.

  4. The 1986 ARI Survey of U.S. Army Recruits. Volume 1. Technical Manual

    DTIC Science & Technology

    1987-04-01

    in an ARMY recrut ng staro ’ m Yes - in other parts of the newspaper Q Yes - at school C Yes - in the mail Yes - from a friend m D Yes - in an AIR...779 PROMO ARMY:YES-ON TV 380 X114L NUM 2 781 PROMO ARMY:YES-OWN SUBSCRIPT MAG 381 x114m NUM 2 783 PROMO ARMY:YES-SCH SUBSCRIPT MAG 382 X114C NUM 2...TV:DIDN’T REG WATCH TV 378 X232H NUM 2 777 REG WATCH WKDAY TV:IMPUTED RESP 379 X233A NUM 2 779 REG WATCH WKEND TV:6AM-NOON 380 X233B NUM 2 781 REG WATCH

  5. Coupling Nuclear Induced Phonon Propagation with Conversion Electron Moessbauer Spectroscopy

    DTIC Science & Technology

    2015-06-18

    global AA PEAKHEIGHTS FIXEDPARAMETERS AUTOZERO delta BIPOLAR % peakfit.m version 5, February 2014 format short g format compact warning off...NumTrials) % % Construct model from best-fit parameters AA=zeros(NumPeaks,600); =linspace(min(xx),max(xx),600); % =linspace(min(xx)-length(xx...max(xx)+length(xx),200); for m=1:NumPeaks, switch peakshape(1) case 1 AA(m,:)=gaussian( ,FitParameters(2*m-1),FitParameters(2*m

  6. A Performance Analysis of View Materialization Strategies for Select- Project-Join Expressions

    DTIC Science & Technology

    1991-09-01

    integer2, level integeri, keyno integer2, accinfo c86); exec sql create table empqm (e num integer2, dnum integer2, ename c20, address c70, salary integer4...create table posam (e-num integer2, snurn integer2, level integeri, keyno integer2, accinfo c86); exec sql create table empsm (e num integer2, dnum...materialization tables * exec sql create table posfm (e-num integer2, snum integer2, level integeri, keyno integer2, accinfo c86); exec sql create table

  7. Design and Implementation of an Operations Module for the ARGOS paperless Ship System

    DTIC Science & Technology

    1989-06-01

    viewdata** on openCard put empty into field viewer put empty into card field marea put empty into card field mrating put empty into card field asof put...empty into card field update end openCard ** CARD #12, FIELD #2: marea * on upperCase if card field marea is not empty then repeat with j = 1 to the...length of card field marea get char j of card field marea if charToNum(it) > 96 and charToNum(it) < 123 then put numToChar(charToNum(it) - 32) into

  8. NAFTA: A Partial Solution Not a Savior to Mexico’s Economic Woes

    DTIC Science & Technology

    2011-10-28

    Mexico.” Economia Mexicana. 15 January 2004. http://www.economiamexicana.cide.edu/num_anteriores/XIV-2/LILIANA_MEZA.pdf (accessed: 28 October 2011...Mexico.” Economia Mexicana. 15 January 2004. http://www.economiamexicana.cide.edu/num_anteriores/XIV-2/LILIANA_MEZA.pdf (accessed: 28 October 2011

  9. Automatic Parallelization of Numerical Python Applications using the Global Arrays Toolkit

    SciTech Connect

    Daily, Jeffrey A.; Lewis, Robert R.

    2011-11-30

    Global Arrays is a software system from Pacific Northwest National Laboratory that enables an efficient, portable, and parallel shared-memory programming interface to manipulate distributed dense arrays. The NumPy module is the de facto standard for numerical calculation in the Python programming language, a language whose use is growing rapidly in the scientific and engineering communities. NumPy provides a powerful N-dimensional array class as well as other scientific computing capabilities. However, like the majority of the core Python modules, NumPy is inherently serial. Using a combination of Global Arrays and NumPy, we have reimplemented NumPy as a distributed drop-in replacement called Global Arrays in NumPy (GAiN). Serial NumPy applications can become parallel, scalable GAiN applications with only minor source code changes. Scalability studies of several different GAiN applications will be presented showing the utility of developing serial NumPy codes which can later run on more capable clusters or supercomputers.

  10. A Practical Application of the Computational Science Environment (CSE)

    DTIC Science & Technology

    2011-12-01

    Visualization Using several of the tools available in CSE (Python, NumPy , PyQt, and Matplotlib), the CSE team worked with the MSRM Infrastructure team...automatically generate graphs of the data output using Python, NumPy , and Matplotlib. Figures 2 and 3 shows example plots of the MOES data. Figure 2

  11. Locking Effects for the Reissner-Mindlin Plate Model

    DTIC Science & Technology

    1992-02-01

    method with quasluniform meshes, RAIRO Math. Mod. Num. Anal. 21 (1987), 199-238. [7] I. Bergh and J. Loftstrom, Interpolation Spaces, Springer-Verlag...11] M. Surn, The p version of the finite element method for elliptic equations of order 2t, RAIRO Math. Mod.9, Num. Anal. 24 (1990), 265-304. 29 8 The

  12. Identification and validation of a factor of commutability between platelet counts performed on EDTA and citrate.

    PubMed

    Dumont, Pierre; Goussot, Vincent; David, Alice; Lizard, Sarab; Riedinger, Jean-Marc

    2017-02-01

    The anticoagulant mostly employed for platelet count is EDTA. The Francophone Group of Cellular Hematology recommends checking of blood smear stained with May-Grünwald Giemsa any thrombocytopenia less than 100 G/L without medical history or whether an alarm is generated by the cell counter. The pseudo-thrombocytopenia (PTP) with EDTA is the best known artifact in platelet count. A sample of blood on citrated tube is necessary to get rid of the interference. The objective of this study was to compare the platelet counts obtained on EDTA (numEDTA) and citrate (numCTAD) tubes and to define, then validate a factor of conversion between both methods. The prevalence of PTP EDTA is 0.26%. The PTP was transient in 80% of the patients. The numEDTA and numCTAD+10% (numCTAD increased by 10% to take dilution into account) are correlated but are not equivalent. The numCTAD+10% underestimate numEDTA significantly. The systematic bias is removed if we increase by 17% numCTAD. The factor of correction is stable over a period of 3 hours.

  13. Legacy Systems Upgrade for Software Risk Assessment

    DTIC Science & Technology

    2001-12-01

    intWksNum = intWksNum + 1 End Function ’ Function from Access 2000 Programming for Dummies ’ This function is used to set the column letter for use...in Computational and Mathematical Organization Theory. 1996 Krumm, Rob, Access 2000 Programming for Dummies , IDG Books Worldwide, Inc., 1999

  14. Sequoia Messaging Rate Benchmark

    SciTech Connect

    Friedley, Andrew

    2008-01-22

    The purpose of this benchmark is to measure the maximal message rate of a single compute node. The first num_cores ranks are expected to reside on the 'core' compute node for which message rate is being tested. After that, the next num_nbors ranks are neighbors for the first core rank, the next set of num_nbors ranks are neighbors for the second core rank, and so on. For example, testing an 8-core node (num_cores = 8) with 4 neighbors (num_nbors = 4) requires 8 + 8 * 4 - 40 ranks. The first 8 of those 40 ranks are expected to be on the 'core' node being benchmarked, while the rest of the ranks are on separate nodes.

  15. Human resource management activities on the front line: a nursing perspective.

    PubMed

    O'Donnell, Deanna M; Livingston, Patricia M; Bartram, Timothy

    2012-06-01

    To identify the practical human resource management (HRM) issues that may impact on job satisfaction, nurse retention and ultimately quality of patient care of the nurse unit manager's (NUM) role. NUMs are in the unique position within the healthcare industry to impact upon and effect large numbers of people, including nurses, doctors, patients and their families, and processes on a daily basis. More effective HRM practices could improve performance in terms of staff satisfaction, positive patient outcomes and the cost effectiveness of staff retention. Two focus groups, one group of nine NUMs and one group of five staff nurses, were conducted at an Australia public hospital. A descriptive phenomenological approach informed data generation and data analysis. The NUMs reported that they were not adequately trained in the skills required to effectively manage staff conflict such as manipulation and bitterness, requiring disciplinary intervention on an ongoing basis. The consequences included reduced staff morale, decreased staff satisfaction, increased stress to the NUM and ultimately retention issues for both the NUM and Unit staff. This study highlights the potential impact of inadequate implementation and understanding of HRM policy and practice by NUMS on the front line. Further research is required to understand why this phenomenon exists and how it can be remedied.

  16. Caenorhabditis elegans numb inhibits endocytic recycling by binding TAT-1 aminophospholipid translocase.

    PubMed

    Nilsson, Lars; Jonsson, Eva; Tuck, Simon

    2011-12-01

    Numb regulates endocytosis in many metazoans, but the mechanism by which it functions is not completely understood. Here we report that the Caenorhabditis elegans Numb ortholog, NUM-1A, a regulator of endocytic recycling, binds the C isoform of transbilayer amphipath transporter-1 (TAT-1), a P4 family adenosine triphosphatase and putative aminophospholipid translocase that is required for proper endocytic trafficking. We demonstrate that TAT-1 is differentially spliced during development and that TAT-1C-specific splicing occurs in the intestine where NUM-1A is known to function. NUM-1A and TAT-1C colocalize in vivo. We have mapped the binding site to an NXXF motif in TAT-1C. This motif is not required for TAT-1C function but is required for NUM-1A's ability to inhibit recycling. We demonstrate that num-1A and tat-1 defects are both suppressed by the loss of the activity of PSSY-1, a phosphatidylserine (PS) synthase. PS is mislocalized in intestinal cells with defects in tat-1 or num-1A function. We propose that NUM-1A inhibits recycling by inhibiting TAT-1C's ability to translocate PS across the membranes of recycling endosomes. © 2011 John Wiley & Sons A/S.

  17. Um supressor de fundo térmico para a câmara infravermelha CamIV

    NASA Astrophysics Data System (ADS)

    Jablonski, F.; Laporte, R.

    2003-08-01

    O ângulo sólido subtendido pelos pixels na câmara infravermelha do NexGal (CamIV) que operamos no OPD/LNA contém contribuições provenientes do sistema de coleta de fluxo propriamente dito - sendo esta a parte que interessa para as medidas astronômicas - e contribuições da obstrução central, sistema de suporte do espelho secundário e região exterior à pupila de entrada do telescópio. Estas últimas contribuições são devi-das à emissão de corpo negro à temperatura ambiente e aumentam exponencialmente para comprimentos de onda maiores que 2 micra (banda K, no infravermelho próximo). Embora a resultante pode ser quantificada e subtraída dos sinais relevantes, sua variância se adiciona à variância do sinal, e pode ser facilmente a contribuição domi-nante para a incerteza final das medidas, tornando ineficiente o processo de extração de informação e degradando a sensibilidade da câmara. A maneira clássica de resolver esse problema em sistemas ópticos que operam no infravermelho, onde os efeitos da emissão térmica do ambiente são importantes, é restringir o ângulo sólido subtendido pelos pixels individuais exclusivamente aos raios provenientes do sistema óptico. Para tanto, projeta-se uma imagem real, bastante reduzida, da pupila de entrada do sistema óptico num anteparo que transmita para o sistema de imageamento só o que interessa, bloqueando as contribuições das bordas externas à pupila de entrada, obstrução central do telescópio e sistema de suporte. Como a projeção é realizada em ambiente criogênico, a contribuição térmica espúria é efetivamente eliminada. Nós optamos por um sistema do tipo Offner para implementar na prática esta função. Trata-se de um sistema baseado em espelhos esféricos, bastante compacto e ajustado por construção. A opção por espelhos do mesmo material que o sistema de suporte (Alumínio) minimiza a dilatação diferencial, crítica nesse tipo de aplicação. Apresentamos as solu

  18. A Influência da Escola e da Mídia na Obtenção dos Conhecimentos Astronômicos

    NASA Astrophysics Data System (ADS)

    da Cunha, W. S.; Voelzke, M. R.; Amaral, L. H.

    2006-08-01

    O universo em que vivemos possui segredos jamais imaginados pelo homem, fruto da pequena proporção que ocupamos diante de um cosmos infinito. A astronomia funciona como um instrumento que sacia a sede humana em desvendar esses segredos, estudando as galáxias, quasares, pulsares além da existência de todos os elementos que preenchem o espaço cósmico, o vácuo, não mais vazio como se pensou em outros tempos. A mídia explora esse campo de forma mística e também científica. A difusão adequada e dentro dos padrões educacionais vigentes, de conceitos astronômicos, se faz necessária, devido sua presença nos conteúdos escolares, centros de ciência e na mídia, de modo geral. A reforma do Currículo Básico da Escola Pública da maioria dos Estados brasileiros introduziu conceitos astronômicos desde a pré-escola até o Ensino Médio. Num estudo realizado com 1.032 alunos do Ensino Médio de seis escolas estaduais, revelou-se através da aplicação de um questionário que abordava conheciment os básicos em astronomia, como estes foram adquiridos e qual era a infra-estrutura oferecida pela escola: para 66,2% dos entrevistados o professor já fez alguma apresentação a respeito de astronomia. O presente estudo revelou também que 44,5% dos alunos entrevistados adquiriram seus conhecimentos astronômicos na escola, 28,1% através da televisão e 27,4% afirmaram que seus conhecimentos foram obtidos através de outros tipos de mídia (internet, filmes e revistas). Embora o estudo revele claramente que há certo equilíbrio na forma em que os alunos obtiveram seus conhecimentos astronômicos, a mídia ainda explora e muitas vezes desperta o interesse pela astronomia com assuntos que não fazem parte de nosso cotidiano como, por exemplo, o homem na Lua, os projetos espaciais e a primeira viagem de um astronauta brasileiro no espaço. Porém, em certos casos, a mídia pode promover conhecimentos incompletos ou mesmo equivocados sobre os conceitos que envolvam

  19. Modeling and Nonlinear Control of a Hot-Water-to-Air Heat Exchanger

    DTIC Science & Technology

    1990-10-01

    port num,dot_out,err code); if err-code <> 0 then dl6_printerrorterrcode) end; procedure dl6ains_(chanlo: integer; var dataval ains:integer); var...code) end; procedure dl6bous_(var dataval bous:integer); var board_num,errcode: integer; (set expl6 channel to read) begin board num := 0; dl6_bous...temporary data storage) cjc -bin: integer; (dashl6 requirments) dataval -ains: integer; begin mnit boards; dl6a’ins_(7, dataval -ains); (get cold

  20. A role of secreted proteinase of Candida albicans for the invasion of chick chorio-allantoic membrane.

    PubMed

    Kobayashi, I; Kondoh, Y; Shimizu, K; Tanaka, K

    1989-01-01

    The invasion of Candida albicans strains into the chorio-allantoic membrane (CAM) of a developing chick was studied by light and electron microscopy. A proteinase-producing strain, NUM961, invaded into intact CAM, but proteinase-deficient strain NUM678 cells remained on the surface of the CAM with no evidence of damage to the host cells. However, NUM678 cells invaded into the ectoderm-damaged CAM, or proteinase-treated one. Electron microscopy revealed that treatment with purified Candida proteinase disorganized the ectoderm tissue by disrupting the intercellular junctions. These results suggest that Candida proteinase damages the CAM surface, which enables the invasion of the growing hyphae.

  1. Passive Localization of Underwater Acoustic Beacons

    DTIC Science & Technology

    1993-09-01

    maxtime) TickCounto; aborto ; FSRead(gASerRefln,&numCharln,&addressBuf); TalkSail(’O); iistart the PTR’s data collecticn DrawString(w\\p: H) I display a...34); aborto ; EventLoopO; II main execution loop RAMSDClose(sPortA); HI must close the RAM Drivers before shutdown 193 free(gw); //must release the...kNumExp+l),sizeof(double)); if(wtrue ==NULL) DrawString("\\pCan’t allocate memory for data collection!!! ); aborto ; Nvmeas = calloc(3L*(kStep~kNumExp+l

  2. A Performance Analysis of View Materialization Strategies for General Expressions

    DTIC Science & Technology

    1991-09-01

    posqe (a-num integer?. anum integer2, level intageri. keyno integer?. accinfo c86): exec sql create table supqm (e-num integer?. dnuu integer?, ensue...materialization tables ~ exec sql create table posse (*-nun integer?. *nun Integer2, level integeri. keyno, integer?. accinfo c86): exec sql creste table... accinfo c86): exec sql creae table empfm Cs-num integer2. dnun integer?. ename c2O, address c70. salary integer4. title c30. jobdesc c60): exec sql

  3. [Congenital Anomalies Detected at Birth in Newborns of Adolescent Women].

    PubMed

    dos Reis, Leandro Valim; Araujo Júnior, Edward; Guazzelli, Cristina Aparecida Falbo; Cernach, Mirlene Cecilia Soares Pinho; Torloni, Maria Regina; Moron, Antonio Fernandes

    2015-01-01

    Introdução: Analisar a prevalência das anomalias congénitas, detetadas no nascimento, entre filhos de gestantes adolescentes, enfatizando os tipos mais comuns e a época do diagnóstico. Material e Métodos: Estudo retrospetivo do tipo censo, no qual foram analisados todos recém-nascidos, vivos ou mortos, com peso superior a 500 g, de mulheres que tiveram o parto no Hospital São Paulo num período de seis anos. Os produtos da conceção portadores de anomalias foram identificados no período pré-natal ou através do exame físico pós-natal, segundo os critérios do Estudo Colaborativo Latino-Americano das Malformações Congênitas. Os resultados são apresentados de forma descritiva através de valores absolutos e relativos, calcula-se a prevalência das anomalias e comparam-se os diferentes grupos recorrendo a testes não paramétricos. Resultados: Foram analisadas 6 257 gestações, das quais 577 resultaram em recém-nascidos com alguma anomalia congénita identificada no nascimento (prevalência de 9,2%). Do total de gestações, 907 eram de adolescentes (idade inferior a 20 anos), para as quais se verificou uma prevalência de anomalias nos recém-nascidos de 9,9%. Comparando os recém-nascidos de adolescentes com os das mulheres com idade superior a 20 anos, apenas se encontrou diferença estatisticamente significativa para a prevalência dos defeitos do tubo neural (p = 0,027). Discussão: Observamos uma alta taxa de partos em adolescentes, acima das taxas dos países desenvolvidos. Observamos também alta frequência de anomalias congénitas em recém-nascidos, provavelmente por sermos um serviço terciário de referência. A elevada prevalência dos defeitos do tubo neural entre grávidas jovens pode ser explicada pela não suplementação pré-concecional de ácido fólico em gravidezes não planeadas, como é característico nas adolescentes.Conclusão: A prevalência e momento do diagnóstico das anomalias congénitas em rec

  4. Enhancing Data Analysis with Noise Removal

    DTIC Science & Technology

    2005-05-19

    NumWithinDist 0; for j = 1 to ntrans do if (( j 6= i)&&(CosineSimilarity(T [i℄; T [ j ℄) r)) thenT [i℄:NumWithinDist++; end end endTsorted Sort(T;NumWithinDist...1 to ntrans doInterSimilarity[1:::ntrans℄ 0; for j = 1 to ntrans doInterSimilarity[ j ℄ CosineSimilarity(T [i℄; T [ j ℄); endInterSimilarity[i℄ 0...num h do for j = 1 to ntrans do if ((!T [ j ℄: overed)&& ontains(T [ j ℄; HC[i℄)) thenT [ j ℄: overed true; end end endN fg;P fg; for i = 1 to ntrans do

  5. QUALITY ASSESSMENT OF CONFOCAL MICROSCOPY SLIDE-BASED SYSTEMS: INSTABLITY

    EPA Science Inventory

    Background: All slide-based fluorescence cytometry detections systems basically include an excitation light source, intermediate optics, and a detection device (CCD or PMT). Occasionally, this equipment becomes unstable, generating unreliable and inferior data. Methods: A num...

  6. Carotenoids, chemistry, sources and physiology

    USDA-ARS?s Scientific Manuscript database

    This chapter for the Enclyclopedia of Human Nutrition (3rd edition) summarizes the structure, chemical and physiological mechanisms, dietary sources, and metabolism of carotenoids. Carotenoids are a family of phytonutrients which have antioxidant properties under most physiological conditions. Num...

  7. Heat transport in a liquid layer locally heated on its free surface

    NASA Astrophysics Data System (ADS)

    Pumir, Alain; Blumenfeld, Laure

    1996-11-01

    A strong heat flux, localized on the upper surface of a fluid, sets up strong convection motions through thermocapillary forces, which limits the temperature elevation in the pool, therefore limiting the efficiency in fusion welding processes. We propose a theoretical estimate of the temperature elevation when the fluid motion is laminar or turbulent, the weld pool surface remaining flat. Our treatment follows the theoretical work of Shraiman and Siggia [

    Phys. Rev. A 42, 3650 (1990)
    ] in Rayleigh-Bénard convection. In the laminar case, the temperature elevation is proportional to the incident power to the <num>3num>4 power, in agreement with earlier estimates, and in the turbulent case, to the incident power to the <num>2num>3 power.

  8. QUALITY ASSESSMENT OF CONFOCAL MICROSCOPY SLIDE-BASED SYSTEMS: INSTABLITY

    EPA Science Inventory

    Background: All slide-based fluorescence cytometry detections systems basically include an excitation light source, intermediate optics, and a detection device (CCD or PMT). Occasionally, this equipment becomes unstable, generating unreliable and inferior data. Methods: A num...

  9. ERDC-CERL LD-870 Download Program: Programming Manual

    DTIC Science & Technology

    2007-05-01

    2023 textBoxSave.SelectedRtf = Me.txtOut4h.Rtf 2024 textBoxSave.Select(textBoxSave.TextLength, 0) 2025 2026...ass.ShowDialog() 2124 2125 If dres = Windows.Forms.DialogResult.OK Then 2126 modem1.modemPhoneNum = appset.Modem1Num 2127...Not result Like "*Stop*" Then 2024 Write("M4" & vbCr) 2025 result = ReadLine(CChar(vbLf)) 2026

  10. Graduate nurses' transition and integration into the workplace: a qualitative comparison of graduate nurses' and Nurse Unit Managers' perspectives.

    PubMed

    Walker, Arlene; Earl, Celisha; Costa, Beth; Cuddihy, Lucy

    2013-03-01

    A three-year longitudinal qualitative study was undertaken to compare graduate nurses' (GNs') and Nurse Unit Managers' (NUMs') perceptions regarding the workplace factors that affect GNs' during the first year of clinical practice in a regional context in Victoria, Australia. In the first year a pilot study was used to develop a qualitative survey seeking information about GNs' transition experiences. Over the next two years 69 GNs and 25 NUMs from one health organisation completed the qualitative survey. Based on the literature and a pilot study, a directed content analysis was used to code the qualitative survey data into two initial categories: job-related and personal stressors. Themes within the two categories were subsequently identified and refined. GNs' and NUMs' perspectives were compared in relation to the categories and themes identified. GNs and NUMs differed with respect to perceptions of unprofessional workplace behaviour and coping with death and dying. GNs were more likely to report unprofessional workplace behaviour than NUMs and this was identified as a main factor affecting workforce integration. Alternatively, NUMs were more likely than GNs to report that coping with death and dying was a major issue. GNs and NUMs were found to hold similar perceptions in relation to shift work and the importance of emotional support. These findings suggest that NUMs and GNs do not always have a shared understanding of the stressors that GNs face in the first year of clinical practice. Further research in other contexts is necessary before any conclusions can be drawn. Copyright © 2012 Elsevier Ltd. All rights reserved.

  11. Program Family for Extended Pretty Printer.

    DTIC Science & Technology

    1983-06-01

    Pascal symbols and comments, but they are rear- ranged with respect tc line boundaries and columns for readability. [Hef. 20] 21...N,H: in NUM; P: out INPUT); N : The start column of a line H : The number of blanks to be inserted procedure DELETER,M...in NUM; P: out INPUT); N : The start column of a line M : The number of blanks to be deleted procedure START (L: in INPUT

  12. Endoplasmic reticulum-associated mitochondria-cortex tether functions in the distribution and inheritance of mitochondria.

    PubMed

    Lackner, Laura L; Ping, Holly; Graef, Martin; Murley, Andrew; Nunnari, Jodi

    2013-02-05

    To elucidate the functional roles of mitochondrial dynamics in vivo, we identified genes that become essential in cells lacking the dynamin-related proteins Fzo1 and Dnm1, which are required for mitochondrial fusion and division, respectively. The screen identified Num1, a cortical protein implicated in mitochondrial division and distribution that also functions in nuclear migration. Our data indicate that Num1, together with Mdm36, forms a physical tether that robustly anchors mitochondria to the cell cortex but plays no direct role in mitochondrial division. Our analysis indicates that Num1-dependent anchoring is essential for distribution of the static mitochondrial network in fzo1 dnm1 cells. Consistently, expression of a synthetic mitochondria-cortex tether rescues the viability of fzo1 dnm1 num1 cells. We find that the cortical endoplasmic reticulum (ER) also is a constituent of the Num1 mitochondria-cortex tether, suggesting an active role for the ER in mitochondrial positioning in cells. Thus, taken together, our findings identify Num1 as a key component of a mitochondria-ER-cortex anchor, which we termed "MECA," that functions in parallel with mitochondrial dynamics to distribute and position the essential mitochondrial network.

  13. Streptococcus loxodontisalivarius sp. nov. and Streptococcus saliviloxodontae sp. nov., isolated from oral cavities of elephants.

    PubMed

    Saito, Masanori; Shinozaki-Kuwahara, Noriko; Hirasawa, Masatomo; Takada, Kazuko

    2014-09-01

    Four Gram-stain-positive, catalase-negative, coccoid-shaped organisms were isolated from elephant oral cavities. The isolates were tentatively identified as streptococcal species based on the results of biochemical tests. Comparative 16S rRNA gene sequencing studies confirmed the organisms to be members of the genus Streptococcus. Two isolates (NUM 6304(T) and NUM 6312) were related most closely to Streptococcus salivarius with 96.8 % and 93.1 % similarity based on the 16S rRNA gene and the RNA polymerase β subunit encoding gene (rpoB), respectively, and to Streptococcus vestibularis with 83.7 % similarity based on the 60 kDa heat-shock protein gene (groEL). The other two isolates (NUM 6306(T) and NUM 6318) were related most closely to S. vestibularis with 97.0 % and 82.9 % similarity based on the 16S rRNA and groEL genes, respectively, and to S. salivarius with 93.5 % similarity based on the rpoB gene. Based on phylogenetic and phenotypic evidence, these isolates are suggested to represent novel species of the genus Streptococcus, for which the names Streptococcus loxodontisalivarius sp. nov. (type strain NUM 6304(T) = JCM 19287(T) = DSM 27382(T)) and Streptococcus saliviloxodontae sp. nov. (type strain NUM 6306(T) = JCM 19288(T) = DSM 27513(T)) are proposed.

  14. Streptococcusdentiloxodontae sp. nov., isolated from the oral cavity of elephants.

    PubMed

    Shinozaki-Kuwahara, Noriko; Saito, Masanori; Hirasawa, Masaaki; Hirasawa, Masatomo; Takada, Kazuko

    2016-10-01

    A Gram-stain-positive, catalase-negative, coccus-shaped organism was isolated from oral cavity samples collected from healthy elephants. The isolated strain, NUM 2404T, was tentatively identified as a streptococcal species based on the results of biochemical tests. Although a comparative 16S rRNA gene sequence analysis suggested the classification of this organism into the genus Streptococcus, it did not correspond to any recognized species of the genus. Strain NUM 2404T was related most closely to Streptococcus saliviloxodontae NUM 6306T with 95.8 % 16S rRNA gene sequence similarity, but the phylogenetic tree reconstructed based on the 16S rRNA gene sequence showed that NUM 2404T clustered with Streptococcus mutans NCTC 10449T and Streptococcus troglodytae TKU 31T. Comparative sequence analysis based on two housekeeping genes, groEL, which encodes the 60 kDa heat-shock protein, and rpoB, encoding the β subunit of RNA polymerase, of NUM 2404T indicated that it was most closely related to those of Streptococcus orisratti A63T and Streptococcus sobrinus ATCC 33478T with 82.7 and 85.1 % sequence similarities, respectively. On the basis of genotypic and phenotypic differences, it is proposed that the novel isolate be classified in the genus Streptococcus as representative of a novel species, Streptococcus dentiloxodontae sp. nov. The type strain is NUM 2404T (=JCM 19284T=DSM 27381T).

  15. Mitochondria-driven assembly of a cortical anchor for mitochondria and dynein.

    PubMed

    Kraft, Lauren M; Lackner, Laura L

    2017-10-02

    Interorganelle contacts facilitate communication between organelles and impact fundamental cellular functions. In this study, we examine the assembly of the MECA (mitochondria-endoplasmic reticulum [ER]-cortex anchor), which tethers mitochondria to the ER and plasma membrane. We find that the assembly of Num1, the core component of MECA, requires mitochondria. Once assembled, Num1 clusters persistently anchor mitochondria to the cell cortex. Num1 clusters also function to anchor dynein to the plasma membrane, where dynein captures and walks along astral microtubules to help orient the mitotic spindle. We find that dynein is anchored by Num1 clusters that have been assembled by mitochondria. When mitochondrial inheritance is inhibited, Num1 clusters are not assembled in the bud, and defects in dynein-mediated spindle positioning are observed. The mitochondria-dependent assembly of a dual-function cortical anchor provides a mechanism to integrate the positioning and inheritance of the two essential organelles and expands the function of organelle contact sites. © 2017 Kraft and Lackner.

  16. Social Transformation and "Popular Schooling" in Brazil.

    ERIC Educational Resources Information Center

    Rossatto, Cesar Augusto

    2001-01-01

    Describes three school programs designed to provide alternative schooling for Brazilian street children and illiterate adult students with the basic skills to survive in their world. Directly or indirectly embedded in Freirean principles, the three programs are: (1) Sao Paulo Interdisciplinary School Reform; (2) Projeto Axe: Schooling for Street…

  17. Assessment of Vocal Adaptations for Noise Compensation in Marine Mammals

    DTIC Science & Technology

    2012-09-30

    Conservacäo de Mamiferos Aquaticos, the Brazilian counterparts for this study. The scientific permit to collect inside of a protected area was issued to...collaborators from Projeto Baleia Franca and Centra Nacional de Pesquisa e Conservacäo de Mamiferos Aquäticos, in cooperation with Universidade

  18. Social Transformation and "Popular Schooling" in Brazil.

    ERIC Educational Resources Information Center

    Rossatto, Cesar Augusto

    2001-01-01

    Describes three school programs designed to provide alternative schooling for Brazilian street children and illiterate adult students with the basic skills to survive in their world. Directly or indirectly embedded in Freirean principles, the three programs are: (1) Sao Paulo Interdisciplinary School Reform; (2) Projeto Axe: Schooling for Street…

  19. Astronomia para/com crianças carentes em Limeira

    NASA Astrophysics Data System (ADS)

    Bretones, P. S.; Oliveira, V. C.

    2003-08-01

    Em 2001, o Instituto Superior de Ciências Aplicadas (ISCA Faculdades de Limeira) iniciou um projeto pelo qual o Observatório do Morro Azul empreendeu uma parceria com o Centro de Promoção Social Municipal (CEPROSOM), instituição mantida pela Prefeitura Municipal de Limeira para atender crianças e adolescentes carentes. O CEPROSOM contava com dois projetos: Projeto Centro de Convivência Infantil (CCI) e Programa Criança e Adolescente (PCA), que atendiam crianças e adolescentes em Centros Comunitários de diversas áreas da cidade. Esses projetos têm como prioridades estabelecer atividades prazerosas para as crianças no sentido de retirá-las das ruas. Assim sendo, as crianças passaram a ter mais um tipo de atividade - as visitas ao observatório. Este painel descreve as várias fases do projeto, que envolveu: reuniões de planejamento, curso de Astronomia para as orientadoras dos CCIs e PCAs, atividades relacionadas a visitas das crianças ao Observatório, proposta de construção de gnômons e relógios de Sol nos diversos Centros Comunitários de Limeira e divulgação do projeto na imprensa. O painel inclui discussões sobre a aprendizagem de crianças carentes, relatos que mostram a postura das orientadoras sobre a pertinência do ensino de Astronomia, relatos do monitor que fez o atendimento no Observatório e o que o número de crianças atendidas representou para as atividades da instituição desde o início de suas atividades e, em particular, em 2001. Os resultados são baseados na análise de relatos das orientadoras e do monitor do Observatório, registros de visitas e matérias da imprensa local. Conclui com uma avaliação do que tal projeto representou para as Instituições participantes. Para o Observatório, em particular, foi feita uma análise com relação às outras modalidades de atendimentos que envolvem alunos de escolas e público em geral. Também é abordada a questão do compromisso social do Observatório na educação do

  20. Development of a Hybrid Simulator for Robotic Manipulators.

    DTIC Science & Technology

    1987-12-01

    014, KV1=75.12, KV2=156.4, KV3 =28.66 CONSTANT KP1=563.4, KP2=1172, KP3= 215,A=2.3562,B=0 N " CONSTANT STATF1=5.95, STATF2=6.82, STATF3=3.91 CONSTANT...STF2 + VF2 + GG2 T03 = D033*QEDD(3,NUM) + D013*QEDD(1,NUM) + D023*QEDD(2,NUM) + KV3 * VE3 + KP3* PE3 + STF3 + VF3 + GG3 THIS SECTION CONTAINS A/D...90, T3MAX=36, POINTR=.014 CONSTANT CINT=.014, KV1=75.12, KV2=156.4, KV3 =28.66 CONSTANT KPI=563.4, KP2=1172, KP3=215,A=2.3562,B=0 CONSTANT STATF1=5.95

  1. Net diffusivity in ocean general circulation models with nonuniform grids

    NASA Technical Reports Server (NTRS)

    Yin, F. L.; Fung, I. Y.

    1991-01-01

    The numerical vertical diffusivity K(num), embedded in a numerical ocean general circulation model with nonuniform vertical grid, is estimated. It is shown that in a downwelling region, K(num) is negative for a grid with grid size increasing with depth. When the grid size increment, or the downward vertical velocity, is large, K(num) may exceed the vertical diffusivity specified and may result in a negative effective vertical diffusivity. Therefore care needs to be taken to specify the vertical diffusivity in a numerical model with nonuniform grid, and a lower bound is generally imposed in order to avoid an unphysical negative value. Some possible effects of the negative effective diffusivity are discussed.

  2. THz-Imaging Through-the-Wall Using the Born and Rytov Approximation

    DTIC Science & Technology

    2008-12-01

    Another application is real-time nondestructive testing , which includes testing for defects in plastic food and medicine packages. Also, there are a...4.19) L Medium (0, 0, -z) Ẑ BB bB mB bA mA TA bn mn Tn bG mG TG BG 31 , m T m T z L z L z L z L G GG G z z...2*N); G3=(num./den).*exp(i*N*Z).*exp(i*N*z3)./(2*N); G4 =(num./den).*exp(i*N*Z).*exp(i*N*z4)./(2*N); G5=(num./den).*exp(i*N*Z).*exp(i*N*z5)./(2*N

  3. Awareness of Emerging Wireless Technologies: Ad-hoc and Personal Area Networks Standards and Emerging Technologies (Sensibilisation a l’emergence des technologies sans fil: technologies emergeantes et normes de reseaux personnels et ad-hoc)

    DTIC Science & Technology

    2007-04-01

    Projet Hipercom – INRIA Rocquencourt. [14] Performance analysis of OLSR Multipoint Relay flooding in two ad hoc wireless network models N°4260...comporter la dénomination « RTO » ou « AGARD » selon le cas, suivi du numéro de série. Des informations analogues, telles que le titre est la date de...RTO » ou « AGARD » selon le cas, suivie du numéro de série (par exemple AGARD-AG-315). Des informations analogues, telles que le titre et la date

  4. Potential Flow Forces and Moments from Selected Ship Flow Codes in a Set of Numerical Experiments. Appendix R - Minimum and Maximum Plots for 0-DOF Motion of Model 5514 in Waves

    DTIC Science & Technology

    2008-05-01

    1088 R– 1768 . Minimum and Maximum ofM difz for Prescribed 0-DOF Motion in Waves of Model 5514 (L = 142 m) in Waves at Heading 135◦ and Froude num- ber...R–1091 R– 1774 . Minimum and Maximum ofM difz for Prescribed 0-DOF Motion in Waves of Model 5514 (L = 142 m) in Waves at Heading 180◦ and Froude num...1/10 — — — — — — — Table R– 1768 . Minimum and Maximum of M difz for Prescribed 0-DOF Motion in Waves of Model 5514 (L = 142 m) in Waves at Heading

  5. Computing Exact Distribution of Customers in Mx/D/c Queues

    DTIC Science & Technology

    1988-06-21

    ULR C MTHOUSIE TIND ROOT C OFX THLED CHAR EQN. L C MEHDUETOFNROTOFTECA.EN INEERC INTEGER NAGS)NZC COMPLER CIHS,DLF,CFRSFTRRDF MD COMPLEX DELF ,,DPLMP...RHOI,ABAR,FF,ANqGLE,RADIUS ,2 ,RT,CFRTS) FRTDEF-CFRTS DELFPR-FRTPRV -DELFPR LAMBDA--0.5E0 10 DELF -FRTDEF- FRTPRV0 DFPRU(-DELFPR*LAMBDA NUM--FRTDEF*(1...LAMBDA)*2 .0 G- (1 .0+LAMBDA*2.0) * DELF - LAMBDA*DFPRU4 SQR-C*G+2 .0*NUM*LAMBDA*( DELF -DFPRLM) IF((REAL(SQR).LT.0.0).AND.(ANGLE.GT.(PI2/2.EO-0.OO1EO

  6. Multiprocessor Real-Time Locking Protocols for Replicated Resources

    DTIC Science & Technology

    2016-07-01

    Size −1 of 0..k initially k /∗shared∗/ Delta : 0..∞ initially 0 /∗ shared ∗/ Num available : 0..k initially 0 /∗ shared ∗/ Pending requests : 0..m... initially 0 /∗ shared ∗/ start time : 0..∞ initially 0 /∗ private to each request ∗/ start slot : 0.. Size initially 0 /∗ private to each request ∗/ j...0..∞ initially 0 /∗ private to each request ∗/ t : 0..∞ initially 0 /∗ private to each request ∗/ num slots : 0.. ⌈ Lmax Slot size ⌉ initially

  7. Design and Optimization of Copper Indium Gallium Selenide Thin Film Solar Cells

    DTIC Science & Technology

    2015-09-01

    system is rated at providing 300 W of continuous power that is generated from a set of solar panels rated at 1.6 kW and includes a set of batteries that...region=8 conmob # SOLAR LIGHT (AM 1.5) beam num=1 x.origin=0.5 y.origin=-2 angle =90 am1.5 wavel.start=0.285 wavel.end=1.655 wavel.num=137...OPTIMIZATION OF COPPER INDIUM GALLIUM SELENIDE THIN FILM SOLAR CELLS by Daniel B. Katzman September 2015 Thesis Advisor: Sherif Michael Second

  8. Numerical Chladni figures

    NASA Astrophysics Data System (ADS)

    Müller, Thomas

    2013-07-01

    The Chladni patterns of vibrating membranes or thin plates were already considered fascinating in the 18th century. As a simple way to visualize acoustic phenomena it is a valuable experiment for beginners' courses. In this paper I present NumChladni, an interactive tool for studying arbitrary two-dimensional vibrating membranes based on the finite element method. I also describe the straightforward approach of the underlying mathematical details and give some examples. NumChladni is directly applicable in the undergraduate classroom, for example, as a complement to experimental setups.

  9. The Diagnostic Rhyme Test (DRT): An Air Force Implementation

    DTIC Science & Technology

    1978-05-01

    1/O RESET - CONTINUE. Be sure the cartridge is write enabled. Insert it into the upper Tri-Data deck. f. After carryin- out the above instructions... write to Fro,.SPKR - 1, NUMS LAOOe Printer Add, al~d Kery No. antd spe" Corniptto V and WPAGE 1 4 E. liarAl Reed epspcesoLetrn Eedt F Write to...0Oet.tiitie Correct Ln rn. Retponters Stop I.till 10 Carte.d Compote No~orrect tar bistene Write to Lien Ptrnter A Stert A Litt- 1,NUMLISPKA. 1, NUMS j Read

  10. The Design of an Adaptive Predictive Coder Using a Single-Chip Digital Signal Processor.

    DTIC Science & Technology

    1985-01-11

    ports using - 34 S-J mm mlm . . ....... ... .- APPENDIX I (continued) ZALS AMDF-L, 0If current AMDF is smaller ADDH AMDF-H,0 make it the new minimum...are stored in a * table in internal RAM. Assumes speech data to be stored in external RAM * accessed using TBLR INIT ZALS BIG-NUM-L,O ADDH BIG-NUM-H...Compare current AMDF value with ADDH MIN-AMDF-H,0 previous minimum SUB AMDF-L,0 SUB AMDF-H, 15 If current is larger, loop BLZ SAME to next pitch value 47

  11. Neuronal Cell Cultures.

    DTIC Science & Technology

    1982-10-01

    AD-A123 120 NEURONAL . CELL CULTURES( U) FEDERATION OF AMERICAN / SOCIETIES FOR EXPER IMENTAL B IOLOGY BETHES DA MD R BUNOF ET AL 01 0C 82 AFOSR-- a...REPRT NUM2. GOVT ACCESSION No. 3. RECIIENT’S CATALOG NUmBER 4. TITLE (end Subtitle) 5, TYPE OF REPORT & PERIOD COVERED Neuronal Cell Cultures FNLRPR...10. PROGRAM ELEMENT. PRZjECT. TASK~ Federation of American Societies for Experi- AREA & WORK UNIT N.jVBERS mental Biology (FASEB), 9650 Rockville

  12. Source Code for the 001 Benchmark and the AFIT Simulation Benchmark

    DTIC Science & Technology

    1993-11-05

    results~i - 1 ] .elapsed..tie m ( (double)num-nodes.visited.in_forward~traversal / (double)results[i - 1J .num.parts.connected); // report the benchmark...34external name", MTSTRING, "part x", 0 ) scNENAnaoRR ); CEECK..STAIUS( Nt~etValue( part- m . "type". MTS32..LIST, int.-type, 1 , 2 ) SCRIMA-.KUIOR...below. Sifudef --- NEXBOARDHH #define --- UXEOARD-JN 8 8 888 91 $ M Ms fiS| 088# 1 1 # fil 1 0II 0 0I # #I MWI I#I* I I I hexboard.hh Air Force Institute

  13. An Overview of the World’s Navies, Future Roles of the US Navy, and Implications for Naval Postgraduate School Instructional and Research Programs

    DTIC Science & Technology

    1991-07-01

    distribution is unlimited. -4 Performine Orcanizanon Re-ort Num. ri s).N? .91- 2 5 Monmorin, Oreani/ation Reqri Num,-.r sI 6a Name of Performing...Introduction. 1 2 . The USA/USSR and Allied Navies. 3 3. Sub-Saharan Africa. 6 4. Latin America and the Caribbean. 10 S. Asia aŘ Autzaialia. 13 6. Mideast...imporatant significance for determining whert efforts need to be focussed in both new weapons and sensor systems as well as operational tactics. Section 2 of

  14. Comment on: "Bachmann, R. W., M. V. Hoyer, and D. E. Canfield. 2013. The extent that natural lakes in the United States of America have been changed by cultural eutrophication. Limnology and Oceanography 58:945-950."

    EPA Science Inventory

    In a recent paper, Bachmann et al. (2013) conclude, based on paleolimnological reconstructions, that lakes in the conterminous U.S. have undergone very little cultural eutrophication. They go on to suggest that their results invalidate the efforts of the U.S. EPA to establish num...

  15. High Temperature Heat Exchanger Development

    DTIC Science & Technology

    2005-10-01

    Contract N00014-03-C-0444. Dr. Steven Fishman of the Office of Naval Research , Arlington VA administered the contract. The program manager at UTRC...tion ell- at e nger for Table 3.1 conditions. All rati av alen t transfer performance. C rat Tube spacin gth th Height Core Vol. Num. Mass varied

  16. METHOD OF IMPROVING THE CARRIER PRECIPITATION OF PLUTONIUM

    DOEpatents

    Kamack, H.J.; Balthis, J.H.

    1958-12-01

    Plutonium values can be recovered from acidic solutlons by adding lead nitrate, hydrogen fluoride, lantha num nitrate, and sulfurlc acid to the solution to form a carrler preclpitate. The lead sulfate formed improves the separatlon characteristics of the lanthanum fluoride carrier precipitate,

  17. POLYBROMINATED DIPHENYL ETHERS (PBDES) IN AMERICAN MOTHERS' MILK

    EPA Science Inventory

    No previous reports exist on polybrominated diphenyl ether (PBDE) congeners in individual American mothers' milk. This report on PBDEs is an extension of our previous studies on concentrations of dioxins, dibenzofurans, PCBs, and other chlorinated organics in human milk in a num...

  18. Cómo calcular el índice UV

    EPA Pesticide Factsheets

    Información sobre cómo calcular el Índice ultravioleta (UV) a través de un modelo numérico que relaciona la intensidad de la radiación solar ultra violeta (UV) en la superficie terrestre con la concentración pronosticada de ozono estratosférico.

  19. CSSP Environmental Scan 2013

    DTIC Science & Technology

    2014-09-01

    human cases and 377 fatalities according to the World Health Organization (WHO) [52]. Another particularly deadly strain of influenza ( H7N9 ) appeared...EN_GIP_20130705CumulativeNum berH5N1cases_2.pdf. [53] World Health Organization, “Human Infection with Avian Influenza A ( H7N9 ) Virus – Update,” 20 July 2013

  20. Comment on: "Bachmann, R. W., M. V. Hoyer, and D. E. Canfield. 2013. The extent that natural lakes in the United States of America have been changed by cultural eutrophication. Limnology and Oceanography 58:945-950."

    EPA Science Inventory

    In a recent paper, Bachmann et al. (2013) conclude, based on paleolimnological reconstructions, that lakes in the conterminous U.S. have undergone very little cultural eutrophication. They go on to suggest that their results invalidate the efforts of the U.S. EPA to establish num...

  1. Cellular Stress Response to Engineered Nanoparticles: Effect of Size, Surface Coating, and Cellular Uptake

    EPA Science Inventory

    CELLULAR STRESS RESPONSE TO ENGINEERED NANOPARTICLES: EFFECT OF SIZE, SURFACE COATING, AND CELLULAR UPTAKE RY Prasad 1, JK McGee2, MG Killius1 D Ackerman2, CF Blackman2 DM DeMarini2 , SO Simmons2 1 Student Services Contractor, US EPA, RTP, NC 2 US EPA, RTP, NC The num...

  2. Human Health Risk Assessment Prince Sultan Air Base, Saudi Arabia

    DTIC Science & Technology

    2000-11-01

    Bromobenzene _5Q 109068 2- Picoline (Svnfueft 51 110576 trans-1,4-Dichloro-2-but _52 111659 Qctane Num 53 54 57 58 59 60 63 _6J_...Lead Magnesium 7439976 7440097 Mercury Potassium 7440235 7440473 Sodium Chromium 7440702 7700176 Calcium Crotoxyphos 149 7786347

  3. GENE EXPRESSION IN HEAD HAIR FOLLICLES PLUCKED FROM MEN AND WOMEN

    EPA Science Inventory

    Characterizing gene expression in hair follicles can help to elucidate the hair growth cycle by delineating the genes and pathways involved in follicular growth and degeneration. The objectives of this study were to determine whether intact RNA could be extracted from a small num...

  4. Variable Number of Tandem Repeat Markers in the Genome Sequence of Mycosphaerella Fijiensis, the Causal Agent of Black Leaf Streak Disease of Banana (Musa spp.)

    USDA-ARS?s Scientific Manuscript database

    Mycosphaerella fijiensis, the causal agent of banana leaf streak disease (commonly known as black Sigatoka), is the most devastating pathogen attacking bananas (Musa spp). Recently the whole genome sequence of M. fijiensis became available. This sequence was screened for the presence of Variable Num...

  5. THE TOXICOLOGY OF COMPLEX MIXTURES OF DISINFECTION BY-PRODUCTS

    EPA Science Inventory

    Chemical disinfection of water is a major public health advance that has decreased dramatically water-borne disease. Chemical disinfectants react with naturally occurring organic and inorganic matter in water to produce a wide variety of disinfection byproducts (DBPs). DBP num...

  6. GENE EXPRESSION IN HEAD HAIR FOLLICLES PLUCKED FROM MEN AND WOMEN

    EPA Science Inventory

    Characterizing gene expression in hair follicles can help to elucidate the hair growth cycle by delineating the genes and pathways involved in follicular growth and degeneration. The objectives of this study were to determine whether intact RNA could be extracted from a small num...

  7. Selection and adaptation to high plant density in the Iowa Stiff Stalk synthetic maize (Zea mays L.) population: II. Plant morphology

    USDA-ARS?s Scientific Manuscript database

    The plant density at which Zea mays L. hybrids achieve maximum grain yield has increased throughout the hybrid era while grain yield on a per plant basis has increased little. Changes in plant characteristics including flag leaf angle, anthesis-silking interval (ASI), plant height, tassel branch num...

  8. Nanoparticle Superlattice Engineering with DNA

    DTIC Science & Technology

    2011-10-14

    with cesium chloride (CsCl); AB2, isostructural with alumi- num diboride; AB3, isostructural with Cr3Si; AB6, isostructural with the alkali-fullerene...com- plex Cs6C60; AB, isostructural with sodium chloride (NaCl); and simple cubic (sc). For each structure, we could tune lattice parameters by means

  9. Construction of a Multi-Cage-Based MOF with a Unique Network for Efficient CO2 Capture.

    PubMed

    Yu, Mei-Hui; Zhang, Ping; Feng, Rui; Yao, Zhao-Quan; Yu, Yi-Chen; Hu, Tong-Liang; Bu, Xian-He

    2017-08-09

    As a kind of MOFs, cage-based MOFs usually carry large voids and small windows, which are advantageous to the storage of small molecules that remain kinetically trapped inside the cages (confinement effect). By adjusting the size of windows via reticular synthesis, the cage-based MOFs can selectively capture and separate the suitable size molecules. Here, considering angle-directed and face-directed strategies, a novel multicage-based MOF NUM-3 with a new (3,4,5)-connected topology was successfully constructed in the mixed-ligands assembly. In the framework of NUM-3, there exist four different kinds of cages, which exhibit diverse polyhedral configurations. The four kinds of cages in the order ABCDDCBA as the minimum repeat unit form a 1D tortuous channel along the c axis. Based on the structure characteristics that the 1D channel exhibits different inner diameter (from 4.0 to13.0 Å), NUM-3a (actived NUM-3) can capture CO2 over C2H4 and C2H6 by the size selectivity (the empirical kinetic diameters: CO2 < C2H4 < C2H6). In addition, it also exhibits commendable selectivity for CO2 over N2 and CH4.

  10. Does reduced peri-pubertal nutrient intake influence the ovarian reserve in beef heifers?

    USDA-ARS?s Scientific Manuscript database

    Reducing nutrient intake in beef heifers after weaning decreases production costs; however, the impact of reduced nutrient intake on the ovarian reserve has not been investigated in this species. In rodent models, caloric restriction increased the number of primordial follicles and decreased the num...

  11. Looking-Free Mixed hp Finite Element Methods for Linear and Geometrically Nonlinear Elasticity

    DTIC Science & Technology

    1997-06-09

    hp mixed methods has been addressed by Stenberg and Suri[20]. They identify sufficient conditions for selecting mixed method spaces on parallelogram...spaces of piecewise polynomials. Math. Modeling Num. Anal., 19:111-143, 1985. [20] R. Stenberg and M. Suri. Mixed hp finite element methods for

  12. 77 FR 7136 - Caribbean Fishery Management Council; Public Meetings

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-10

    ... snappers and red tail parrotfish ( http://www.sefsc.noaa.gov/sedar/Sedar_Workshops.jsp?WorkshopNum=26 ) 5. Discussion of options paper on parrotfish size and trip limits 6. Data needs and recommendations on study design to determine status of parrotfish populations on St. Croix 7. Review information needs for...

  13. V2.1.4 L2AS Detailed Release Description September 27, 2001

    Atmospheric Science Data Center

    2013-03-14

    ... Report NumAcceptSubr as number of subregions of good quality, instead of number of subregions actually used in final retrieval. ... het. surface retrieval algorithm over areas of 100% dark water. Modify algorithm for selecting a default aerosol model to use in ...

  14. Optimizing Cost Versus Time Shipping of U.S. Navy Retrograde Materiel

    DTIC Science & Technology

    2005-03-01

    ASSEMBLY NIl: 0134-2118 WTD PRICE $ 21500 WEIHT (LBS) 177in NUM END USER NM AA OE NM AA U U -1)ý U O El JRB WIU-OW GROJE PA EM HAS JACKSONVILLE I EN...Commodity Network Design for the Defense Logistics Agency, Master’s Thesis in Operations Research, Naval Postgraduate School, 1994. ISO Parts, website

  15. Use of quantum self-friction potentials and forces in standard convention for study of harmonic oscillator

    NASA Astrophysics Data System (ADS)

    Guseinov, I. I.; Mamedov, B. A.

    2017-04-01

    In this paper, the physical nature of quantum usual and self-friction (SF) harmonic oscillators is presented. The procedure for studying these harmonic oscillators is identical; therefore, we can benefit from the theory of the usual harmonic oscillator. To study the SF harmonic oscillator, using analytical formulae for the L^{{(pl^{ * } )}}-SF Laguerre polynomials (L^{{(pl^{ * } )}}-SFLPs) and L^{{(α^{*} )}}-modified SFLPs (L^{{(α^{*} )}}-MSFLPs) in standard convention, the V^{{(pl^{ * } )}}-SF potentials (V^{{(pl^{ * } )}}-SFPs), V^{{(α^{*} )}}-modified SFPs (V^{{(α^{*} )}}-MSFPs), F^{{(pl^{ * } )}}-SF forces (F^{{(pl^{ * } )}}-SFFs) and F^{{(α^{*} )}}-modified SFFs (F^{{(α^{*} )}}-MSFFs) are investigated, where pl^{ * } = 2l + 2 - α^{*} and α^{*} is the integer (α^{*} = α, - ∞ < α ≤ 2) or non-integer (α^{*} ≠ α, - ∞ < α < 3) SF quantum number. We note that the potentials (V^{{(pl^{ * } )}}-SFPs and V^{{(α^{*} )}}-MSFPs), and forces (F^{{(pl^{ * } )}}-SFFs and F^{{(α^{*} )}}-MSFFs), respectively, are independent functions. It is shown that the numerical values of these independent functions are the same, i.e., V_{num}^{{(pl^{ * } )}} = V_{num}^{{(α^{*} )}} and F_{num}^{{(pl^{ * } )}} = F_{num}^{{(α^{*} )}}. The dependence of the SF harmonic oscillator as a function of the distance is analyzed. The presented relationships are valid for arbitrary values of parameters.

  16. Efficient Estimation of Mutual Information for Strongly Dependent Variables

    DTIC Science & Technology

    2015-05-11

    between Total Cell Phones (Y ), Num- ber of Female Cervical Cancer cases (Z), and rate of Tuberculosis deaths (X). Since the variable Z (the number...indi- cates that a higher number of cell phones per person are predictive of lower tuberculosis death rate. One 283 Ecient Estimation of Mutual

  17. Superconductive Microwave Single-Flux-Quantum Digital Circuits and Corresponding Opto-Electronic Interfaces: On-Going Studies and First Experimental Results

    DTIC Science & Technology

    2005-07-13

    UHLMANN University of Technology Ilmenau– PO Box 105565 – D-98684 Ilmenau - Germany RESUME : Les circuits numériques supraconducteurs micro-ondes...circuits RSFQ. Ce banc de mesure comporte deux types d’interfaces opto-RSFQ, basées sur des matériaux semiconducteurs et supraconducteurs , respectivement

  18. Area Handbook Series: Bulgaria. A Country Study

    DTIC Science & Technology

    1992-06-01

    8217) to the letter "u" to distinguish the distinctive Bulgar- ian vowel from the conventional "u" also used in Bulgarian. On maps, English-language...descended from Spanish Jews who spoke Hebrew or Ladino (aJudeo-Spanish dialect). A much smaller num- ber were Ashkenazi, with Yiddish-speaking ancestors

  19. Annual Technical Report.

    DTIC Science & Technology

    1982-11-01

    T ’ .. . . . -. . . . , . . . - . ... - -. --- ~ . . . ..... .... IIS~ANNUAL TECHNICAL REPORT K-TO THE OFFICE OF NAVAL RESEARCH CONTRACT No, N00014...RIECIPICHT’S CATC1.O@ NUM@SA 4. TITLE (sn$ S-611fleI) ’I TYPE OP RErPORT A Pimo0o COVEREC, Annual Technical Report Am~4~10/01ZS-9130/26 S.PERFORMING

  20. Global Instability and Control of Low-Pressure Turbine Flows

    DTIC Science & Technology

    2006-03-31

    at moderate Reynolds numbers. Congreso de M~todos Num~ricos en Ingenieria 2005, July 4-7, 2005, Granada, Spain, 2005. Barkley, D. and Henderson, R. D...Methodos Numericos in Ingenieria 2005, Granada Y 3 rd Symposium on Global Flow Instability and Control September 2005 Crete, Greece. * AIAA San

  1. POLYBROMINATED DIPHENYL ETHERS (PBDES) IN AMERICAN MOTHERS' MILK

    EPA Science Inventory

    No previous reports exist on polybrominated diphenyl ether (PBDE) congeners in individual American mothers' milk. This report on PBDEs is an extension of our previous studies on concentrations of dioxins, dibenzofurans, PCBs, and other chlorinated organics in human milk in a num...

  2. Dinámica de objetos transplutonianos: resultados preliminares

    NASA Astrophysics Data System (ADS)

    Fernández, S.; Brizuela, H.; Roig, F.; Varela, O.

    Se presentan los resultados de una integración numérica de las ecuaciones de movimiento para objetos transplutonianos. Se han calculado los tiempos de Lyapunov para esos objetos y se analiza el comportamiento dinámico de los mismos.

  3. Passage rates in poultry digestion using stable isotope markers and INAA

    USDA-ARS?s Scientific Manuscript database

    A method has been developed for the study of passage rates and mean residence times (MRT) of test rations through the gastrointestinal tracts of layer hens. The use of rare earth elements as stable indigestible markers monitored by neutron activation analysis has been previously demonstrated in num...

  4. Relationship between sensory and chemical attributes of Vidalia onions

    USDA-ARS?s Scientific Manuscript database

    Flavor in fresh onions is dominated by sulfur containing volatiles that are released once tissues are disrupted and the S-alk(en)yl-L-cysteine sulfoxide (ACSOs) are hydrolyzed by the enzyme alliinase. Four intensities of flavor levels of Vidalia onions were induced by cultivating sweet (Num 1006) an...

  5. 14 CFR 382.57 - What accessibility requirements apply to automated airport kiosks?

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... locking or toggle controls or keys (e.g., Caps Lock and Num Lock keys), must be discernible visually and... without activation must be provided for each function. Where provided, key surfaces not on active areas of display screens, must be raised above surrounding surfaces. Where touch or membrane keys are the only...

  6. GeoTOA: Geocentric TOA tools

    NASA Astrophysics Data System (ADS)

    Kerr, Matthew; Ray, Paul

    2014-12-01

    GeoTOA computes the pulse times of arrival (TOAs) at an observatory (or spacecraft) from unbinned Fermi LAT data. Written in Python, the software requires NumPy, matplotlib, SciPy, FSSC Science Tools, and Tempo2 (ascl:1210.015).

  7. Weighted Key Player Problem for Social Network Analysis

    DTIC Science & Technology

    2011-03-01

    that can be found at http://www.python.org. This code makes use of a number of free and open source Python packages: SciPy, NumPy and NetworkX...each partition , a list partition: The p paritions of the network , a dictionary ’’’ import networkx as nx 226 import numpy from scipy.cluster import

  8. CosmicPy: Interactive cosmology computations

    NASA Astrophysics Data System (ADS)

    Lanusse, Francois; Rassat, Anais; Starck, Jean-Luc

    2016-01-01

    CosmicPy performs simple and interactive cosmology computations for forecasting cosmological parameters constraints; it computes tomographic and 3D Spherical Fourier-Bessel power spectra as well as Fisher matrices for galaxy clustering. Written in Python, it relies on a fast C++ implementation of Fourier-Bessel related computations, and requires NumPy, SciPy, and Matplotlib.

  9. Design of a Space Borne Autonomous Infrared Tracking System

    DTIC Science & Technology

    2004-03-01

    8217, hsv (6),’FaceColor’,’flat ’); theta_last = 0;%axis([-.2 .2 -.2 .2 -.2 .2]); axis square;break % Motion for ii= 1 :num_pts %transform... 1 Space Control...88 ix List of Figures Figure Page 1

  10. Learning Scientific Programming with Python

    NASA Astrophysics Data System (ADS)

    Hill, Christian

    2016-02-01

    1. Introduction; 2. The core Python language I; 3. Interlude: simple plotting with pylab; 4. The core Python language II; 5. IPython and IPython notebook; 6. NumPy; 7. Matplotlib; 8. SciPy; 9. General scientific programming; Appendix A; Solutions; Index.

  11. Enhanced virulence of clade 2.3.2.1 highly pathogenic avian influenza A(H5N1) viruses in ferrets

    USDA-ARS?s Scientific Manuscript database

    Sporadic avian to human transmission of highly pathogenic avian influenza (HPAI) A (H5N1) viruses necessitates the analysis of currently circulating and evolving clades to assess their potential risk. Following the spread and sustained circulation of clade 2 viruses across multiple continents, num...

  12. Changes in the use of young bulls

    USDA-ARS?s Scientific Manuscript database

    Availability of genomic information since 2008 has increased accuracy of genetic evaluations for young bulls in Holstein (HO), Jersey (JE), and Brown Swiss (BS). As a result, AI organizations have been aggressively promoting young bulls and producers have been using young bulls more extensively. Num...

  13. Sodium tetraborate decahydrate treatment reduces hydrogen sulfide emissions and the sulfate reducing bacteria population of swine manure

    USDA-ARS?s Scientific Manuscript database

    The emission of odorous and toxic gases from stored livestock manure is well documented, and poses a serious health risk to farmers and livestock. Hydrogen sulfide emissions have been sharply rising with more intensive livestock production and are of particular concern due to its acute toxicity. Num...

  14. A Distributed Operating System Design and Dictionary/Directory for the Stock Point Logistics Integrated Communications Environment.

    DTIC Science & Technology

    1983-11-01

    MSCUINV CLASSIFICATION Oor ThS PAgg Isbm Sao &me _______________ 2"AD 9uSTRUCTbOMREPOR CUMETAT PAGE a0m COMPLETG PORN I. IPORT NUM6rN IL i3’ ACC... internetting , that is the communication of data over diverse multiple networks. In the case of SPLICE, this involves 62 local networks interconnected by

  15. Intercalated Compounds: A New Class of Materials as Advanced Solid Lubricants.

    DTIC Science & Technology

    1982-01-25

    CLASSIFICATION OF THIS PAGE (Whin DaE~I’ _______________ RED fI3TRUCTIOMSREPORT DOCUMENTATION PAGE Ston COMPLEIM7VG FORm I.RPR NUM an GVT ACCESO NO L...contain multiple layers of intercalant between adjacent carbon planes 41. As a consequence of intercalation, the interplanar distance between intercalated

  16. Peacetime Engagement: A Role for Military Advisors?

    DTIC Science & Technology

    2000-01-01

    small num- ber of officers going to Pakistan, Bangladesh , Britain, and the United States. There are branch schools, but in-unit training is the norm...through direct deposits to bank accounts ■ improving health care for soldiers with simple preventive medicine (mosquito nets, hand-washing, and condoms

  17. Cellular Stress Response to Engineered Nanoparticles: Effect of Size, Surface Coating, and Cellular Uptake

    EPA Science Inventory

    CELLULAR STRESS RESPONSE TO ENGINEERED NANOPARTICLES: EFFECT OF SIZE, SURFACE COATING, AND CELLULAR UPTAKE RY Prasad 1, JK McGee2, MG Killius1 D Ackerman2, CF Blackman2 DM DeMarini2 , SO Simmons2 1 Student Services Contractor, US EPA, RTP, NC 2 US EPA, RTP, NC The num...

  18. Experimental Modal Analysis and Dynamic Component Synthesis. Volume 1. Summary of Technical Work

    DTIC Science & Technology

    1987-12-01

    and Hilbert, J. H., Identification of the Dynamic Characteristics of a Structure with Coloumb Friction, Journal of Sound and Vibration, Vol. 64, Num. 2...1301 Tomlinson, G. R., Hibbert, J. H., Identification of the Dynamic Characteristics of a Structure with Coloumb Friction, Journal of Sound and

  19. Spatial Processing of Urban Acoustic Wave Fields from High-Performance Computations

    DTIC Science & Technology

    2007-06-01

    propagation. classify, and locate mortar and sniper fire and other The work calculates fading measures from ratios of sources of interest. Optimal sensing...Natick, MA, 2007. so 16. Dey , S. and D.K. Datta, "A Parallel hp-FEM Infrastructure for Three-Dimensional Structural Acoustics." Int. J. Num. Meth. 50 100

  20. THE TOXICOLOGY OF COMPLEX MIXTURES OF DISINFECTION BY-PRODUCTS

    EPA Science Inventory

    Chemical disinfection of water is a major public health advance that has decreased dramatically water-borne disease. Chemical disinfectants react with naturally occurring organic and inorganic matter in water to produce a wide variety of disinfection byproducts (DBPs). DBP num...

  1. Looking Under the Hood of Stochastic Machine Learning Algorithms for Parts of Speech Tagging

    DTIC Science & Technology

    2008-07-01

    SYM Noise 8 36,232 NUM Number 1 15,178 MODAL Modal verb 1 14,115 POS Genetive marker 1 5,247 ORG Organization 1 1,958 FW Foreign Word 1 803 The...beneficial. - 18 Table 8: Rule Evaluation (on clean data) ID If token is unknown Then Other rules applied Total Algorith - mic Unknown Tokens

  2. Asymmetrical Challenges: Technology in an Era of Persistent Conflict (Army Space Journal, 2009 Spring Edition)

    DTIC Science & Technology

    2009-01-01

    very competitive world over the next forty years. Just in technology, an iPod by 2020 will be able to hold the entire Library of Congress. A home...can pass that to all the disadvantaged users and not be reliant on one path. In friendly force tracking, again we have to develop a num- ber of

  3. Hypersonic Flight Vehicle and Ramjet Engine. Considerations of Coordination and Configuration,

    DTIC Science & Technology

    1980-04-01

    interstellar travel . Further research and realization in the field imply that there will be great increases in the num- ber and frequency of launches and...profound effects on the progress and depth of research in our nation’s space science and interstellar flights. It seems that there are two approaches to

  4. Improved Techniques for Targeting Additional Observations to Improve Forecast Skill

    DTIC Science & Technology

    2016-06-07

    T oulouse F rance Grant Num ber: N00014{99{1{0755 LONG-TERM GOAL This project aims to improv e ensemble forecast and adaptive observ ation tec...be studied. It will be assessed whether the assimilation system can be geared to more readily accept adaptive observations made in currently data

  5. Surface Observation Climatic Summaries

    DTIC Science & Technology

    1991-12-01

    1 TERMS EXPLAINED ....................................................... 1 TIME CONVENTIONS...STATIOW PERIOD OF RECORD. HOURLY DATA: AUG 80 - JUL 90 (AIRWAYS). SUMMARY OF DAY DATA: MAY 41 - JUL 90 (FULL TIME ). HOURS SUMMARIZED: 0000 LST THROUGH...VALUES. PERCENT OCCURRENCE FREQUENCY (POF): IN STATISTICS, FREQUENCY IS THE NUM- BER OF TIMES A GIVEN COUNT OR EVENT OCCURS. IN THE SOCS, THIS IS

  6. Control of Transitional and Turbulent Flows Using Plasma-Based Actuators

    DTIC Science & Technology

    2006-06-01

    Phenomena. Int. Jnl. for Num. Methods in Eng., 45:1849–1869, 1999.19P. Alpert . Implicit Filtering in Conjunction with Explicit Filtering. J. Comp. Phys...Flat Plate. NASA CR-187068, 1991.30D. Greenblatt, K.B. Paschal, C.S. Yao, and J. Harris . A separation control cfd validation test case part 2. zero

  7. Experimental and Numerical Analysis of Narrowband Coherent Rayleigh-Brillouin Scattering in Atomic and Molecular Species (Pre Print)

    DTIC Science & Technology

    2012-02-01

    Newtonian in spatially varyi time step. T appreciable fr code has bee therein. The v employed for maintaining f The Larsen-B relaxation num Assuming...Fig. 8 illustr CRBS spectra anent dipole m rison of numerica r vapor using s6 & v echnique pres ng narrowband isional gas dy root of tempe l and

  8. The Cartographic Eye in Children's Picturebooks: Between Maps and Narratives

    ERIC Educational Resources Information Center

    Meunier, Christophe

    2017-01-01

    This article examines the place occupied by maps in children's picturebooks. After a brief overview of the different roles that are assigned to maps in children's books, the article considers five French picturebooks--Warja Lavater's "Le petit chaperon rouge" (1965), Olivier Douzou and Isabelle Simon's "L'autobus numéro 33"…

  9. Photocopy of drawing located at National Archives, San Bruno, California ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Photocopy of drawing located at National Archives, San Bruno, California (Navy # NUM), showing 680-A-9. Machine shop expansion joint and details; 1938. - Mare Island Naval Shipyard, Machine Shop, California Avenue, southwest corner of California Avenue & Thirteenth Street, Vallejo, Solano County, CA

  10. The Positioning Problem - A Draft of an Intermediate Summary

    DTIC Science & Technology

    1978-12-01

    13 and computed with respect to the original nucleus. 4.. Such a rocess may be viewed as a (possibly parallel ) solidification of Parts Of the the...n) Is the total num- 1. siaow, U,. and 3. Roth. 1971. *The ,. rigidity of graphs.* 1. El. Preprinat, fe v . Univesity of Wyoain, Laramie.!)or o edges

  11. A gene cluster for the synthesis of serotype g-specific polysaccharide antigen in Aggregatibacter actinomycetemcomitans.

    PubMed

    Tsuzukibashi, Osamu; Saito, Masanori; Kobayashi, Taira; Umezawa, Koji; Nagahama, Fumio; Hiroi, Takachika; Hirasawa, Masatomo; Takada, Kazuko

    2014-04-01

    Aggregatibacter actinomycetemcomitans is an important pathogen related to aggressively progressive periodontal breakdown in adolescents and adults. The species can be divided into six serotypes (a-f) according to their surface carbohydrate antigens. Recently, a new serotype g of A. actinomycetemcomitans was proposed. The aim of the present study was to sequence the gene cluster associated with the biosynthesis of the serotype g-specific polysaccharide antigen and develop serotype-specific primers for PCR assay to identify serotype g strains of A. actinomycetemcomitans. The serotype-specific polysaccharide (SSPS) gene cluster of the NUM-Aa 4039 strain contained 21 genes in 21,842-bp nucleotides. The similarity of the SSPS gene cluster sequence was 96.7 % compared with that of the serotype e strain. Seventeen serotype g genes showed more than 90 % homology both in nucleotide and amino acids to the serotype e strain. Three additional genes with 1,579 bp in NUM-Aa 4039 were inserted into the corresponding ORF13 of the serotype e strain. The serotype g-specific primers were designed from the insertion region of NUM-Aa 4039. Serotypes of the a-f strains were not amplified by serotype-specific g primers; only NUM-Aa 4039 showed an amplicon band. The NUM-Aa 4039 strain was three genes in the SSPS gene cluster different from those of serotype e strain. The specific primers derived from these different regions are useful for identification and distribution of serotype g strain among A. actinomycetemcomitans from clinical samples.

  12. [Development and implementation of Animals-Assisted Therapy in a university hospital].

    PubMed

    Kobayashi, Cassia Tiemi; Ushiyama, Sílvia Tiemi; Fakih, Flávio Trevisan; Robles, Roseli A M; Carneiro, Ieda Aparecida; Carmagnani, Maria Isabel Sampaio

    2009-01-01

    This report refers to the experience of the Board of Nursing of Hospital São Paulo, Universidade de São Paulo, in the development and implantation of Animal-Assisted Therapy, as one of its projects humanization of hospital: 'Projeto Amicão'. Aiming to offer patients a positive experience that differs from the routine of the hospital environment, some units of the Hospiral São Paulo received the visit of an animal for sessions of Animal-Assisted Therapy. The results achieved among patients and its companions and health professionals were positive, in addition to arouse the attention and the interest of other health institutions and the media. It is thus evidenced the importance of reporting the experience of 'Projeto Amicão' in the hospital.

  13. Projected BCS-Tamm-Dancoff approximation with blocking effect

    NASA Astrophysics Data System (ADS)

    Dias, H.; Krmpotić, F.

    1982-05-01

    The blocking effect is introduced through a canonical transformation in the projected BCS-Tamm-Dancoff approximation. It is suggested that the blocking effect may play an important role in the description of the low-lying states in odd-mass nuclei. Present address: Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, 1900 La Plata, Argentina. Member of Carrera de Investigador Científico, CONICET, Argentina. Sponsored by Financiadora de Estudos e Projetos (FINEP), Brasil.

  14. Wavelet Transforms using VTK-m

    SciTech Connect

    Li, Shaomeng; Sewell, Christopher Meyer

    2016-09-27

    These are a set of slides that deal with the topics of wavelet transforms using VTK-m. First, wavelets are discussed and detailed, then VTK-m is discussed and detailed, then wavelets and VTK-m are looked at from a performance comparison, then from an accuracy comparison, and finally lessons learned, conclusion, and what is next. Lessons learned are the following: Launching worklets is expensive; Natural logic of performing 2D wavelet transform: Repeat the same 1D wavelet transform on every row, repeat the same 1D wavelet transform on every column, invoke the 1D wavelet worklet every time: num_rows x num_columns; VTK-m approach of performing 2D wavelet transform: Create a worklet for 2D that handles both rows and columns, invoke this new worklet only one time; Fast calculation, but cannot reuse 1D implementations.

  15. The 1986/1987 Army Communications Objectives Measurement System. Supplementary Tabulations of Officer Markets

    DTIC Science & Technology

    1988-08-01

    ELIGTYPM 1D N~UN 2 ELIGTYP YOUTH’S SAMPLE CELLi oISED ON MAIN 7IT ELIGTYPS 9 rNum 2 ELIGTYP YOUT-i’S SAMPLE CELLf 6AS2ED ON CE.R0 ELIVADOR 112 N~um 2 YESNO...PLOYER I5CCCU*N 214 14jm 2 YZSNO b~ 1d Y CISCUSS COLLzG2 W.T. SC CUNSLV Yaccow 21~ ,1 2 ISU E5~IC~USCCLG DO Y1DC 2~ U Y=S’JO =Eli Y Cscuss CCLL G~ "T...CuqRRENTLY IN MILIT;RlVFA.MNA~ 206 N 1. 2 Y ES N SIt Y M: FAMILY 60ANCH SERVICENAVfYFC;.Sm EG 516 Nim 2 AG; Ezw PE6 GET MONzY FOR EDUCATION: AIR

  16. NASA Astrophysics Data System (ADS)

    Brunini, A.

    Se presenta una revisión de los conocimientos actuales sobre el proceso de acreción del sistema solar exterior. En base a nuevas y más realistas simulaciones numéricas, se analiza el impacto que tuvo dicho proceso en otras regiones del sistema solar tales como la nube de Oort, el cinturón de Kuiper y el sistema solar interior. Se presentan entonces, las principales limitaciones de los modelos numéricos actuales, los principales puntos aún oscuros en el problema, y algunos de los posibles caminos a seguir para mejorar nuestro conocimiento en el tema. Se discute a continuación la posible utilidad de este tipo de estudios para el diseño de estrategias de búsqueda de otros sistemas planetarios.

  17. N-Version Software Demonstration for Digital Flight Controls.

    DTIC Science & Technology

    1987-04-01

    AUTOLAND; for INDEX In 1..4 loop If AL-COMPV3GSBFAM.VAL(INDEX) = TRUF thlen NUM-VAL.GS := NUM-,.AL.GS 1 ; end it ; % it AL-COmP.V3.RATX.ALT..VAL(INnEX...1;j IfACTR-CUIJNT >= 3 then ACTR-.ChK := FALSE; end it ; else ACTR.COULNT := 0 end it end It f when 3 => - Faiilted It SERVO-JACTtJATOp~flN = TRUF ...thon ACTR-.COU14T :: -t ond it ; when -50..-l => -- Healina it SEHVO-3.ACTJATOR-flN = TRUF 3*then ACTP..COVNT := ACTP.CuUNT - I If ACTR-.COUNT <= -50

  18. Estabilidad de los modelos de Heggie y Ramamani

    NASA Astrophysics Data System (ADS)

    Muzzio, J. C.; Vergne, M. M.; Wachlin, F. C.; Carpintero, D. D.

    Los modelos de Heggie y Ramamani de satélites galácticos en órbitas circulares se basan en una teoría aproximada, por lo que es importante verificar su estabilidad mediante simulaciones numéricas. En esta forma, hemos logrado mostrar que son estables sobre intervalos de tiempo mucho mayores que los que lograron los propios autores de los modelos. Por otra parte, dado que hemos mostrado que el caos es significativo en estos modelos, son un sistema ideal para investigar si, pese a ello, se mantienen estacionarios. Nuestras simulaciones numéricas muestran que, pese al caos, la estacionariedad se mantiene sobre intervalos de centenares de tiempos de cruce del sistema, mucho mayores que los tiempos de Liapunov característicos de sus movimientos caóticos.

  19. Comparison of Combat Gauze and TraumaStat in Two Severe Groin Injury Models

    DTIC Science & Technology

    2011-07-01

    products, X-Sponge (Z-Medica, Wallingford, CT), a synthetic gauze coated with kaolin ; Woundstat (TraumaCure, Bethesda, MD), a smectite/polymer...wide gauze. The fabric material (non-woven rayon/polyester) is coated with kaolin , an alumi- num silicate very potent coagulation initiator that...product, impregnated with hemostatic agent ( kaolin ), provides additional properties that yield good hemostatic control in vivo, as seen in the

  20. Correlates of Creative Problem Solving

    DTIC Science & Technology

    1992-10-01

    Network). This unusual project of invention has been adopted as an annual sporting event in many locations across the 8 United States and in selected...criteria were placed in randomized order in numbered envelopes. The num- bers permitted linking Pre- and Post-Test data by individual. During the first...preference for using "intuition" in their thinking as measured by the MBTI. A comparison of their distribution with a random sample from a college

  1. Fort Campbell Childers House: Historic Maintenance and Repair Manual

    DTIC Science & Technology

    2006-09-01

    the highest priority. The area of significance is architecture. The Childers House is an excellent example of early 20th century colonial revival...disturb the basement walls. GENERAL INFORMATION Preservation: Defined as the act or process of applying measures to sustain the existing form...8217 or ‘Compac- tum’ Koreanspice Vibur- num Height 3-5’, Spread 3-6’ rounded, broad rounded very fragrant white flowers in early spring and

  2. Analyzing Global Interdependence. Volume I. Analytical Perspectives and Policy Implications,

    DTIC Science & Technology

    1974-11-01

    Industrial Diamonds Quartz Platinum 84%-96% Bauxite 75%-85% Mercury Tin Nickel 50%-55% Tungsten Zinc 25%-30% Iron Ore 20%-25% Lead 10%-20% Copper mo -14...anortho- site ores in Wyoming and Utah could replace bauxite in making alumi- num. Manganese nodules recoverable from the seabed contain nickel, copper ...geopolitically but conceptually. The official view of interdependence held by many in the advanced nations rests on two major conceptual pillars : (I) a

  3. Stability of T-2 Mycotoxin in Aqueous Media

    DTIC Science & Technology

    1985-05-20

    COVERED 1.0 Stability of T-2 Mycotoxin in Aqueous Media I26. PERPORMtN~k- ~REPORT NUMBER I.0 . AUTHOR(*) S. CONTRACT OR GRANT NUMBER(.ý Lynn R...ST’RACTrmT6aMs" sid~f e -r. eit riif nvcww a" tdentty by block num-iie) Radiolabeled [ H] T-2 mycotoxin was dissolved in various aqueous media and stored...1..* .. ~ ~ ~ .**~.*~-%* .~% .. . * ~ * % ** ." ,’ ....-- -. , Stability of T-2 Mycotoxin in

  4. Spatial Localization in Strabismic Observers.

    DTIC Science & Technology

    1983-06-10

    2 1 . 1. MICROCopy RESOLUTIOIN TEST CHART NATIONAL. j1AU 1503S 6-A IA Řo REPORT NO. NADC-83049-60 SPATIAL LOCALIZATION IN STRABISMIC OBSERVERS Dr...PERIOD COVERED Phase Report 10 Jun 82- Spatial Localization in Strabismic Observers 10 Jun 83 6. PERFORMING ORG. REPORT NUM@UER1 7. AUTHOR(@) 8...7 5(b) Cancellation With Independent Monocular EEPI .......................... 8 6 A Strabismic Observer Monocularly Fixates A

  5. Conference Proceedings of The Human-Electronic Crew: Can They Work Together? Held in Ingolstadt, FRG on 19-22 September 1988

    DTIC Science & Technology

    1989-07-01

    these constraints, there is also the problem of memory volume: Al applications are generally ’greedy’ In memory requirements and all use a ’ garbage ...rAau Om nom TOM sm06- iMOM 152 1.2 Al TECNOLOGY - UNRESOLVED OVA$ -*M i swam .. MGM * I mMm a a~~M amuji hi "num.m W u L WW " NOu-M I ssw nGU"m on"a

  6. AFOSR/AFRPL Chemical Rocket Research Meeting, Abstracts and Agenda. Includes Abstracts of AFOSR Sponsored Research on Diagnostics of Reacting Flow, 18-21 March 1985, Lancaster, California

    DTIC Science & Technology

    1985-02-01

    TIME NUM.TE UM BASIC PROCESSES IN PLASMA PROPULSION. Herbert 0. Schrade, Institut fur Raumfahrtantriebe der Universitat Stuttgart,, 0800 47...TECHNIQUES FOR ATOMIC FLUORINE. William K. Bi •chel, SRI International, Menlo Park, CA 62 COHERENT OPTICAL TRANSIENT SPECTROSCOPY IN FLAMES. John W...OPTICAL PROCESSING AND PHASE CONJUGATION. Lambertus Hesselink, Stanford University, Stanford, CA 66 STRATEGY FOR ADVANCED SENSING AND CONTROL OF COMBUSTION

  7. Program Objectives Memorandum Data Base Management System (POM-DBMS). Users Manual

    DTIC Science & Technology

    1981-05-01

    Manual UM 81-1 -1 58) RtPRODUCED BY NATIONAL TECHNICAL MNQR AA TION SERVICE HEADQUARTERS UNITED STATES MARINE CORPS WASHINGTON, D.C. Program Objectives...PERFORMING ORGANIZATION NAME AND ADDRESS 𔃺. PROORAM ELEMENT. PROJECT. TASK AREA & WORK UNIT NUM@ERS 4 Decisions and Designs, Inc. Suite 600, 8400...Headquarters, United States Marine Corps IS. NUMUER Or PAGES Code RPP-2, Washington, DC 20380 93 14 MONITORING AGENCY NAME & ADOR’SS( differentr hem

  8. Cavity Ignition in Supersonic Flow by Spark Discharge and Pulse Detonation

    DTIC Science & Technology

    2014-08-18

    in a supersonic flow was achieved through the application of two energy deposition techniques : a spark discharge and pulse detonator (PD). High...two energy deposition techniques emphasized the importance of cavity fueling and flowfield dynamics for successful ignition. Published by Elsevier...the super- sonic flow at takeover flight speeds (Mach num- bers ɝ) prohibit auto-ignition. Therefore energy addition techniques typically need to be

  9. Normic Continued Fractions in Totally and Tamely Ramified Extensions of Local Fields

    DTIC Science & Technology

    2014-11-13

    Theory , Oxford Univ. Press, New York, 1986. 10 [4] S. Iyanaga, The Theory of Numbers , Amsterdam-Oxford-New York, 1969. [5] W. Narkiewicz, Elementary ...and Analytic Theory of Algebraic Num- bers, Springer-Verlag, Warszawa, 1990. [6] A. A. Ruban, “Certain metric propetrties of p-adic numbers ”, (Rus- sian...subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number . 1. REPORT

  10. Analytical Study of Transmission of Load from Skin to Stiffeners and Rings of Pressurized Cabin Structure

    DTIC Science & Technology

    1945-10-01

    34 (reference1 2),f %•$ ~o.f. •tt>&e same .tjjpe of all-metal structure as the Lockheed, circular in section, with alumi- num- alloy rings, partition...in- the belt ’frame« - 񔅐 psi versus 6660 calculated; longitudinal s&i’n ’-- 477𔃺’ psi"• versus- D&SO calculated-; and eircumf V/-en-t’ial

  11. HESCOMP. The Helicopter Sizing and Performance Computer Program. User’s Manual. Revision 2.

    DTIC Science & Technology

    1979-10-01

    rogam . PERFORMING ORG. REIPORT HumbeR _____________________________________ D210-10699-2, Revision 2 7. AUTNOR(a) S. CONTRACT OR GRANT NUM119(A) S. J...Developed under Contract No. NAS2-61 07 (Study of the Methodology -for Evaluation of an Interurban and intraurban V/STOL Transportation System) Revised ...ADMINISTRATION Ames Research Center, Moffett Field, California 94035 D210-10699-2 September 1973 First Revision November 1974 Second Revision October 1979 -’V

  12. Department of Defense High Power Laser Program Guidance

    DTIC Science & Technology

    1994-06-06

    Air Force Phillips Laboratory . Through FY94, laboratory operational funding, including civilian... Laboratory Effort and Air Materiel Command Ground-Based Laser (GBL) - Space Control USSPACECOM AF Phillips Laboratory Effort Point Defense Demonstration - Anti...ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING I.GANIZATION Phi 1l i ps Laboratory /LID REPORT numP•R 3550 Aberdeen Avenue, S.E. Kirtland AFB, NM

  13. Modeling Content from Human-Verified Blacklists for Accurate Zero-Hour Phish Detection

    DTIC Science & Technology

    2009-01-01

    Financial Services/Banking/Credit Unions/ [26] Online Escrow Services, Yahoo Directory. http://dir. yahoo.com/Business and Economy/ Shopping and Services...experiment. 2) Being able to operate in an online fashion up- dated incrementally by a few out of a large num- ber of new phishing instances, our...is defined to be the longest contiguous sequence of dashes and alphabetic letters. For in- stance, ‘ online -business9online’ has two such subsequences

  14. The Role of Fatty Acid Metabolism in Estrogen Receptor Negative Breast Cancer

    DTIC Science & Technology

    2015-11-01

    cells results in a molecular fingerprint characteristic of ER-negative human breast tu- mors. Our studies showed that MCF-7 cells, which express ER and...expression and exhibit an ER-negative molecular fingerprint . An examination of the microarray data accompanying these experiments indicates that Raf-1...H, Kim Y, Wang P, Lapointe J, Tibshirani R, Pollack JR, et al. (2005). Genome-wide characterization of gene expression variations and DNA copy num

  15. The Contribution of the Spanish Guardia Civil to the Peace and Stability Operations Within the Human Security Framework

    DTIC Science & Technology

    2010-03-08

    teams of two officers ( parejas ) as established in its famous Code of Practice. These teams composed of two officers were responsible for patrolling...internacionals/nwn 76 seguridad humana conceptos experiencias y___propuestas (accessed October 26, 2009). Gray, Colin S. Another Bloody Century. London...Affairs, 76 (February 2007): 47-58, http://www.cidob.org/es/publicaciones/revistas/revista cidob d afers intemacionals/num 76 seguridad humana conceptos

  16. Annual Scientific Report, Grant AFOSR-81-0205.

    DTIC Science & Technology

    1984-12-01

    145 1S. SUPPLEMENTARY NOTATION 17. COSATi CODES It SUBJECT TERMS (Conhinue on ,wuere if neceeary and identify by blocl num er) FIELD I GROUP I SUB. GR...Drinking Philosophers Problem, by Chandy and Misra). They have recently developed a general theory for studying computability issues in asynchronous...programming systems is tractable: a precise theory for distributed, message passing computations may be developed; important paradigms can be abstracted

  17. Spontaneous Analogy by Piggybacking on a Perceptual System

    DTIC Science & Technology

    2013-08-01

    bags) such that the problem of analog retrieval is reduced to the problem of percept parsing. An example of this process is shown for the Sour Grapes ...scribed in Figure 3. This algorithm extracts numWindows windows from each large relational structure and transforms them into feature bags...retrieval, called Spontol-Retrieve, is given in Figure 4. When given a new re- lational structure s, we encode s by extracting windows from it, parsing these

  18. Crisis-Expectant Planning for Crisis Relocation.

    DTIC Science & Technology

    1981-10-01

    WORK UNIT NUmBERS Human Sciences Research, Inc. 7710 Old Springhouse Road Work Unit 482 1G McLean, Virginia 22102 It. CONTROLLING OFFICE NAME AND... Controlling Office) UNCLASSUIFIEDS.(1 ereot I Sm. DECLASSIFICATION/DOWNGRADING SCHEDULE 16. DISTRIBUTION STATE64ENT (of &hs .1. oer) Approved for Pttblic...preattack relocation period. 4. Improved population control with respect to orchestrating or phasing the evacuation movement, the post-evacuation

  19. Engineering Design Handbook: Timing Systems and Components

    DTIC Science & Technology

    1975-12-01

    reduced by an agent absorbed on the surface of a substrate and are deposited on the substrate. The " electroless nickel " process is the most common method...enclosures included copper-clad kovar bases, compatible glass-to-metal seals, and covers of high purity nickel . In attempts to miniaturize the enclosure...characteristics. Forks made of certain alumi- num alloys can attain twice the Q of nickel alloy forks but have very poor frequency versus temperature

  20. Beyond Graphs: Capturing Groups in Networks

    DTIC Science & Technology

    2011-01-01

    for understanding the rest of the paper. Readers interested in learning more about simplicial complexes, Betti numbers and algebraic topology in...be reliable, that is, acknowledged, then the cost of the tree depends upon the num- ber of receivers as well. Second, in rate- adaptive networks...vertices in a given simplex share a common neighbor. In our case, we adapt the notion to mean that nodes in a simplex simultaneously receive a given

  1. A Business Overview & Summary of the SM-27S/T MACHETE RDT&E Program as Undertaken by the Military Aerospace/Tactical Air Warfare Systems Division of STAVATTI

    DTIC Science & Technology

    2007-11-02

    consist of Scandium Alumi- num, IM9/RP-46 Graphite/Polyimide, Ti-6A1-4V Titanium and SPECTRA/RP-46 SPECTRA/Polyimide. Aircraft service life is projected...sections. Enhancing structural rigidity, the fuselage body incorporates a titanium subframe of geo- detic construction (pioneered in the Wellington Bomber...integrating all frames, primary bulkheads and firewall. Armored throughout, the MACHETE features a titanium armor “bathtub” for cockpit protection as

  2. A Business Overview & Summary of the SM-27S/T MACHETE RDT&E Program as Undertaken by the Military Aerospace/Tactical Air Warfare Systems Division of STAVATTI

    DTIC Science & Technology

    2005-06-27

    primary structures consist of Scandium Alumi- num, IM9/RP-46 Graphite/Polyimide, Ti-6A1-4V Titanium and SPECTRA/RP-46 SPECTRA/Polyimide. Aircraft...and cowling sections. Enhancing structural rigidity, the fuselage body incorporates a titanium subframe of geo- detic construction (pioneered in the...Wellington Bomber) integrating all frames, primary bulkheads and firewall. Armored throughout, the MACHETE features a titanium armor “bathtub” for

  3. Evolution-Based Methods for Selecting Point Data for Object Localization: Applications to Computer-Assisted Surgery.

    DTIC Science & Technology

    2007-11-02

    desirable to minimize the num- ber of measurements collected for this purpose, while ensuring sufficient localization accuracy. In surgery , for example...cadaver trials. Evolution-Based Methods for Selecting Point Data for Object Localization: Applications to Computer-Assisted Surgery Shumeet Baluja1 and...for object localization. In this paper, the object localiza- tion problem was explored in the context of computer assisted surgery ; however, object

  4. Ada/Xt Architecture: Design Report for the Software Technology for Adaptable, Reliable Systems (STARS)

    DTIC Science & Technology

    1990-01-25

    return ptr; function xt-realloc (p : ptr; num : cardinal) return ptr; 25 January 1990 b I AKb-KL- UIUUU /LjI/UU 4 THE ADA /XT DESIGN 71 procedure 2t-f.roo...end if; 25 January 1990 N I AKb-KL- UIUuu /uuWIuu 5 APPENDIX A: CASE-STATEMENT PROCEDURE TYPES 76 end it; aext-siapped..id:u next-.iapped..id + 1; it cb3

  5. A Maximum of Support: The Development of U.S. Army Field Artillery Doctrine in World War 1

    DTIC Science & Technology

    1983-06-03

    Timothy Nenninger of the National Archives guided me through the holdings of the American Expeditionary Forces and sent me material I missed while there...Army num- bered 128,000 officers and men in that month, and with the call-up of the National Guard for duty during the Mexican border crisis, active...and half a regiment of mountain artillery. In the summer of 1916 Congress passed the National Defense Act, which provided for an increase in the

  6. Organic Synthesis and Catalysis in Microemulsions

    DTIC Science & Technology

    1988-02-02

    RECIPIENT’S CATALOG NUM •ER A ~ ~ I &j-/( N/A N/A 4. TITLE €,,,1 &"#I*) S. TYPE OF REPORT & PERiO4 COVERED LAJ Organic Synthesis and Catalysis in...ey Dstq "Av: ’ijj,,i d i o I l UNCLASSIFIED SECURITY CLASSIFICATION Of THIS PAGEg’lrhn Date Entered) Organic Synthesis and Catalysis in

  7. Chemoprevention of Breast Cancer by Mimicking the Protective Effect of Early First Birth

    DTIC Science & Technology

    2007-06-01

    surrounding epithelial structures. Images are representative of distal structures in the mammary glands of three nulliparous and three parous Lewis rats...associations of parity, age at first full term pregnancy, and duration of breastfeeding with the risk of breast cancer. Cancer and Steroid Hormone Study...the num- bers that were MIB1 positive, were counted with the help of an automated microscope system that digitized the images and permitted the

  8. Survey of Contamination in Fuel Tanks of DD-963 Class Ships.

    DTIC Science & Technology

    1982-07-23

    and Identifly by block num0b.’) Diesel fuel Fuel sludge Bacteria Fuel contamination Cladosporium resinae Sludge composition assess sources of... resinae ) predominated. Viable sulfate reducers were sometimes present but rarely sulfide. Below pH 4 bacteria were rare and fungi and yeasts were numerous...but the variety tended to be restricted to C. resinae and Candida. Differences in viable microbial varieties present in these sludge categories are

  9. Smoothing Splines: Regression, Derivatives and Deconvolution.

    DTIC Science & Technology

    1981-11-01

    1977 ). Solutions of Ill - posed Problems . V. H. Winston and Sons. Wahba, G. (1975). Smoothing noisy data with spline functions. Num. Math., 24, 309...ds . (1.3) Many examples of this type may be found in Tikhonov and Arsenin ( 1977 ). The method of regularization is used to control the instability... solutions of certain minimax problems , Powell (1981) and Speckman (1981). It appears that flexibility is lost by guarding against worst cases. Smoothing

  10. Migration of Explosives in Soil

    DTIC Science & Technology

    1982-12-06

    I .1• N"WC TR 82.568 LI •MIGRATION OF EXPLOSIVES IN SOIL BY ELEONORE G. KAYSER, NICHOLAS E. BURLINSON , RESEARCH AND TECHNOLOGY DEPARTMENT...GRANT NUmSitR(*) Eleonore G. Kayser Nicholas E. Burlinson 1. PERFORMING ORGANIZATION NAME AND AODRESS tO.-*ROUAM ELIMEN TROJECT, "rSIC11. OAK UNIT NUMI...Avenue U. S. Environmental Protection Menlo Park , CA 94025 Agency Office of Research & Development Atlantic Research Corporation Monitoring

  11. Gambling Task (fMRI Revision 3.0.1)

    DTIC Science & Technology

    2007-10-01

    fMRI Gambling Task est un programme de logiciels informatiques qui présente au sujet des représentations de deux jeux de cartes ou plus, dont chacune... informatiques qui présente au sujet des représentations de deux jeux de cartes ou plus, dont chacune des cartes a une valeur numérique qui lui est associée. La

  12. LORENE: Spectral methods differential equations solver

    NASA Astrophysics Data System (ADS)

    Gourgoulhon, Eric; Grandclément, Philippe; Marck, Jean-Alain; Novak, Jérôme; Taniguchi, Keisuke

    2016-08-01

    LORENE (Langage Objet pour la RElativité NumériquE) solves various problems arising in numerical relativity, and more generally in computational astrophysics. It is a set of C++ classes and provides tools to solve partial differential equations by means of multi-domain spectral methods. LORENE classes implement basic structures such as arrays and matrices, but also abstract mathematical objects, such as tensors, and astrophysical objects, such as stars and black holes.

  13. Gas-Surface Interactions in Cryogenic Whole Air Sampling.

    DTIC Science & Technology

    1981-05-01

    incomplete condensation, occurs at relatively high temperatures, where the adatom, population is controlled by the rates of adsorption and desorption as...NUMS ’ Princeton University 62101F Princeton, New Jersey 08544 668703AB 1I. CONTROLLING OFFICE NAME AND ADDRESS 12. REPORT DATE Air Force Geophysics...background species. The growth of this structure is kinetically controlled , with condensation temperature being a complex function of beam intensity, energy

  14. Solution of Nonlinear Least-Squares Problems.

    DTIC Science & Technology

    1987-07-01

    Computation Building 460, Room 313 Stanford University Stanford, California 94305-2140 0 87 i4 3 4 SOLUTION OF NONLINEAR LEAST-SQUARES PROBLEMS A...Performance on a Well-Conditioned Zero -Residual Problem ............. 84 4.7 Num erical Results...termination conditions A superscspt o following a problem number indicates a zero -residual problem A superscipt following a problem number denotes a

  15. Dredging Operations Technical Support Program. Effectiveness of Capping in Isolating Dutch Kills Sediment from Biota and the Overlying Water.

    DTIC Science & Technology

    1986-06-01

    Identify by block num ber) Marine pollution --Experiments (LC) Environmental engineering (LC) Contamination (Technology) (LC) Dredged material (WES...Harbor Sediments and Dredging Spoil," Marine Pollution Bulletin, Vol 12, No. 10 pp 351-353. Babinchak, J. A., Graikoski, J. T., Dudley, S., and...Vol 34, No. 1, pp 38-41. ___-___ 1977b. "Distribution of Fecal Coliforms in Bottom Sediments fromEl the New York Bight," Marine Pollution Bulletin, Vol

  16. Potential Use of Geotechnical Fabric in Airfield Runway Design.

    DTIC Science & Technology

    1980-10-01

    punching shear resistance developed by the standard base material. Empirical correlations for different CBR values, concerning thick- ness of base... CBR value is a relative num- ber and field correlations rather than soil stress-strain theory are used 20 to determine design requirements. The method...normal CBR design assumptions [8] are not realized, a typical empirical correlation was developed by Hammitt )] as: t = 0.176 log C + 0.120 P A (2.1

  17. Exterior Insulation and Finish Systems (EIFS) on U.S. Army Facilities: Lessons Learned

    DTIC Science & Technology

    1990-10-01

    Laboratory N AD-A228 572 Exterior Insulation and Finish Systems (EIFS) on U.S. Army Facilities: Lessons Learned by Richard G. Lampo Jonathan C...SUBTITLE 5. FUND NG NUM13ERS Exterior Insulation and Finish Systems (EIFS) on U.S. Army Facilities: PE 4A162731 Lessons Learned PR AT41 6. AUTHOR(S...EIFS insulation 16. PRJCE CODE walls lessons learned 17 SECURITY CLASSIFICATION 18. SECURITY CLASSIFICATION 19. SECURITY CLASSIFICATION 20. LIMITATION

  18. PyXel: A Python Package for Astronomical X-ray Data Modeling

    NASA Astrophysics Data System (ADS)

    Ogrean, Georgiana

    2016-06-01

    PyXel is an new Python package for modeling astronomical X-ray imaging data. It is built on NumPy, SciPy, matplotlib, and Astropy, and distributed under an open-source license. The package aims to provide a common set of image analysis tools for astronomers working with extended X-ray sources. I will present an overview of its existing and planned features, and analysis examples based on public Chandra data.

  19. A Generalized Set-Covering Method for Surveillance Maintenance

    DTIC Science & Technology

    1991-03-01

    numpis (void); nt 11, bb, hh; ain() { char ss; printf(" THIS PROGRAM GIVES A...case ’A’: pisnum(); break; case ’a’: pisnum(); break; case ’B’: numpis (); break; case ’b’: numpis (); break; case ’C’: exit(0); case ’c’: exit(0...THIS PROCEDURE COMPUTES THE ORIGIN OF THE PIECE */ /* CORRESPONDING TO ANY GIVEN NUMBER*/ void numpis (void) { . int num, xx, yy, zz, temp;

  20. Ordered End-to-End Multicast for Distributed Multimedia Systems

    DTIC Science & Technology

    2006-01-01

    Ordering of messages compensates for the lack of a global system state and the effects of asynchrony, unpredictable network delay, and disparities in...separate logical propagation graph or global clock synchronization, and ordering is dis- tributed across nodes on the delivery paths between sources...set on route by PN, deciding on a globally valid num- ber, and multicasting the message to the receiver set with a final and binding sequence number

  1. The AS (Administrative Sciences) Financial Reporting System: Some Experience on Prototyping and User Interaction.

    DTIC Science & Technology

    1986-03-27

    the system, the following steps are suggested: 1. Join relevant financial data tables together. 2. Write procedures to compute conditional aggregate...added to AS System - date - date of latest authorization memo received - authorized - total amount authorized; from Code 00 : lemo - randum (Fiscal...and read and write access (DBA has table matching access codes to individuals). Allowable values; num =numeric, str =string, logic =logical. Format

  2. Photophysics and Photochemistry of Pentacarbonylpyridino-tungsten(O) Complexes Which Luminesce in Fluid Solution.

    DTIC Science & Technology

    1981-08-05

    AD-AI02 A76 UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES DEPT 0--ETC F/73 PHOTOPHYSICS AND PHOTOCHEMISTRY OF PENTACARBONYLPYRIDINO-TUNOST--ETCIU...Complexes Kinetics Photochemistry Substitution Photo pY ics 20. AqSTRA’T .Cotr’ . .. wer *)d !e ces$w.. end idert!y by black num!.?) See manuscript. DD...NR 051-609 TECHNICAL REPORT NO. 15 Photophysics and Photochemistry of Pentacarbonylpyridino-tungsten(O) Complexes Which Luminesce in Fluid Solution

  3. Effect of Prior Fatigue-Stressing on the Impact Resistance of Chromium-Molybdenum Aircraft Steel

    DTIC Science & Technology

    1943-03-01

    vidently contrib- uted to the formation of num~rous ~urface cracks in t-hie set of spacimmns. This r.cult is in contrast to thp pre– VIOUS findings of~ory f...sistances less than 47 foot–pounds (figs. 12 and 13). It is th=reforea~~in = vident that m~asurements of ~longation arid‘t~risil= impact resistanc~ are

  4. The Effects of Hydrazines and Related Compounds on Calcium Calmodulin Regulated Synaptic Processes

    DTIC Science & Technology

    1983-07-01

    1REPORT NUMBER 2.GOVT ACCESSION NO. S. RECIPIENT’S CATALOG NUM0ER 4.TTE(and Subtitle) S. TYPE OF REPORT & PERIOD COVERED The Effects of Hydrazines and...4F -631 0 1984 E IS. KEY WORDS (Continue on reverse side if necessary and identify by block nunmber) Calmodulin, protein kinase, adenylate cyclase...hydrazines, organophosphates, C) calcium, synaptic processes, protein phosphorylation. 20. BSTRACT (Continue an reverse side it necessary mid Identify

  5. Visual Acuity and Reaction Time in Navy Fighter Pilots,

    DTIC Science & Technology

    1986-12-01

    10. SOUR CW 0FUHND"N NUmIRs Naval Medical Research & Development Command PRGKOM POX ~JCT TASK WORK UNITI IIAMET NO Ný CESSION NO.NMC, National Capital...8. Stimulus sizes were specified in minutes of visual angle ( mva ), and target exposure time was 3 seconds. 2 kdditiotwl details concerning these...This test required the subject to press the joystick iWmmeiately at the appearance of a swrathreshold spot target (2 mva 4iame-. ter). Target

  6. Properties and Types of Significant Photothermal Retinal Lesion Injuries

    DTIC Science & Technology

    2016-09-01

    formation 1flt does not display a currently valid OMB·control num ber PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ORGANIZATION. 1. REPORT DATE (00...PROJECT NUMBER Risk of Significant Injury Teclmical Working Group: Wesley Burgei, Shannon Foley, Matt Pandullo, Melissa Nass-Flores, George L Fischer...photothennal retinal lesion injuries that is consistent with the language and intent of DoD Instruction 3200.19. 15. SUBJECT TERMS Non-lethal, risk of

  7. A (In)Cast of Thousands: Scaling Datacenter TCP to Kiloservers and Gigabits

    DTIC Science & Technology

    2009-02-01

    supported SACK [22], which was introduced only in 1996. In just three years from 2001—2004, the num- ber of TCP Tahoe -based servers dropped drastically in...inter-packet arrival) shows that these more pre- cise delayed ACKs restore throughput to about 98% of the no-delayed-ACK throughput. 6 Achieving...file system. In Proc. 19th ACM Symposium on Operating Systems Principles (SOSP), Lake George, NY, October 2003. [17] V. Jacobson. Congestion Avoidance

  8. Relationship Between Prepregnancy Anthrax Vaccination and Pregnancy and Birth Outcomes Among US Army Women

    DTIC Science & Technology

    2002-03-27

    define low birth weights (764-765) and congeni- tal structural abnormalities (740-759). Low birth weight was defined as in- fants weighing less than 2500 g...come analysis. Eleven (3.3%) of the births were of low birth weight (2500 g). The OR for anthrax vaccination and low birth weight , after adjusting for...anthrax vaccination prior to pregnancy. Although the num- ber of adverse outcomes was small, the percentage of low- birth - weight in- fants was about

  9. Cyber-Forensic Research Experimentation and Test Environment (CREATE)

    DTIC Science & Technology

    2002-10-01

    Evidence will be a key conduit in this process. An article in the first issue written by Carrie Whitcomb, National Center for Forensic Science , entitled...Examining Computer Forensic Evidence. Forensic Science Communication, Vol. 1, Num. 4. Retrieved June 2001, from http://www.fbi.gov/hq/lab/fsc/backissu...information from a much greater pool of diverse pieces of information. Finally, because computer forensic science is market driven, it must be able to adapt

  10. A Formal Application of Safety and Risk Assessment in Software Systems

    DTIC Science & Technology

    2004-09-01

    299 2. THERAC – 25 RADIATION EXPOSURE INCIDENT ......................300 3. TITAN–4 CENTAUR/MILSTAR FAILURE...Engineering Leveson & Turner wrote in their analysis and summary of the Therac – 25 accidents that, “The mistakes that were made are not unique to this...Turner, Clark S.; An Investigation of the Therac - 25 Accidents, IEEE Computer Magazine, vol. 26 num 7 pg. 18-41, Institute of Electrical and

  11. PHASE ANALYSIS AND CRYSTAL STRUCTURE STUDIES ON BINARY ALLOYS OF ALUMINUM WITH TRANSITION METALS.

    DTIC Science & Technology

    In order to provide the necessary background for detailed crystal-chemistry studies in the field of binary aluminum - transition metal systems, extensive investigations have been carried out on the phase relations of a large number of such systems. The results of these studies are briefly summarized, as are also the results of crystal structure determinations of a few alumi num - transition metal phases. (Author)

  12. Genomic Instability and Breast Cancer

    DTIC Science & Technology

    2011-06-01

    Survival Assay—Atotal of 1 103 cells were seeded onto a 60-mm dish in triplicate. Twenty-four hours after seeding, cells were irradiated by using a JL...ShepherdMark I-68A 137Cs- irradiator at indicated doses and incubated for 14 days. Result- ing colonies were fixed and stainedwithCoomassie Blue. Num...antibodies, cell culture, transfection and siRNAs, DNA substrates protein purification in insect cells, electrophoretic mobility shift assay and the ATPase

  13. Sensor Model Requirements for TAWS/IRTSS Operation

    DTIC Science & Technology

    2007-09-01

    km – AtmAlpha 1 m2/g not applicable, no smoke AtmConcLen 1 m2/g not applicable, no smoke NumSpectDetPtsIn 9 – – SpectDetWavelengthIn1 3.3 µm Same as...mrad Std Dev V Sinsdl Image Motion Amp 0 mrad Eye Limiting MTF 1 – Thrshld SNR to Resolve 4-bar Tgt 2.5 – Enviro Background Temp 290 K Det 1/f knee freq

  14. Wing Force & Moment Characterization of Flapping Wings for Micro Air Vehicle Application

    DTIC Science & Technology

    2005-02-21

    Reynolds number. Reynolds num- ber of hummingbird ( Lampornis clemenciae) is 14,300 with a wing length of 85 mm, aspect ratio of 8.2, total stroke amplitude...the capability to hover as witnessed in insects and hummingbirds . These properties make FWMAVs more suitable for micro air vehicle mis- sions such as...reconnaissance and surveillance, specially, in confined areas. The aerodynamics of flapping wings, such as that of insects and hummingbirds , is

  15. The NRL SOLRAD 11 Satellites (1976-023C, 1976-023D) Description of Experiments.

    DTIC Science & Technology

    1982-11-30

    PAGE fWm. Dora Entered) REPORT DOCMENTATION PAGE BFREr COSMPUETNORM 1. PERPRMIN ONUMEPRTEREE 12 AUTN R(. S F C NT ORE CA ALAT NUM BERa NRL Memorandum...Experimenter: G.A. Doschek, Code 4170, Naval Research Laboratory This experiment is intended to detect polarized solar x-ray emission between 10 and 60 kev...Incident x-rays undergo Thomson scattering by a block of lithium. Scattered non- polarized x-rays are obierved isotropically in a plane perpendicular

  16. Supercritical Fluid Fractionation of JP-8

    DTIC Science & Technology

    1991-12-26

    Content vs. Fraction Num ber ................................. 48 24 Schematic Diagram of German Coffee Decaffeination Column ..... 56 .- I I, .. . .i- "on...applications, such as coffee decaffeination , spice extraction, and lipids purification. The processing principles have also long been well known and ipracticed...present commercial operation (ie, the decaffeination of coffee and tea), Figure 24 is a copy of a page from a Krupp brochure which gives the cross section

  17. Sample Data Processing.

    DTIC Science & Technology

    1982-08-01

    Cosentlno S. J. Meehan __ S. PERFORMING ORGANIZATION MAMIE ANO AOORESS SO. PROGRAM ELEMENT. PROJECT. TASKC The MTRE orportionAREA & WORK UNIT NUM@UERSThe...MITRE Corporation .€ oxui ue~ P. 0. Box 208 62702FBedford MA 01730 MOIE7090 • • ’ It. CONTROLLING OFFICE NAMIE ANo AOREUs 12. RPORT OATC ESD/TOF...communications systems. The work in FY81 focused on two areas: development and evaluation of a simple technique for secure transmission S S of voice-band

  18. Distributed Commit Protocols for Nested Atomic Actions

    DTIC Science & Technology

    1988-11-01

    recently begun looking into possibilities of piggybacking information on messages in order to reduce lock propagation queries [ Duchamp 1987]. * Clouds...A num- ber of orphan detection schemes have been proposed (e.g., see [Liskov et al. 1987c, McKendry &’. Herlihy 1987, Duchamp & Spector 19871) and we...available as TR 85-694, Dept. of Computer Science, Cornell University, Ithaca, NY. [ Duchamp & Spector 1987] Dan Duchamp and Alfred Spector. Handling

  19. National Program for Inspection of Non-Federal Dams. Walden Pond Outlet Dam MA 00246 and Walden Pond East End Dam MA 00235, Coastal Basin, Saugus, Massachusetts, Lynn, Massachusetts. Phase I Inspection Report.

    DTIC Science & Technology

    1978-08-01

    AVAILABILITY CODES DIST AVAIL AND/ OR SPECIAL.______________ DATE ACCESSIONED IDISTRIBUTION STAMPr ___________________________________DATE RETURNED 85 5...29 068 DATE RECEIVED IN DTIC REGISTERED OR CERTIFIED NO. PHOTOGRAPH THIS SHEET AND RETURN TO DTIC.DDAC OTIC Dcr 70A DOCUMENT PROCESSING SHEET STOCK IS... or REPORT 6 PEROD COVERED INSPECTION REPORT NATIONAL PROGRAM FOR INSPECTION OF NON-FEDERAL ~ ~ OG EOTm~E 7. AUTI4OR(A) 8. CONTRACT OR GRANT NUM9BEIN

  20. Mathematical Methods and Algorithms for Real-Time Applications

    DTIC Science & Technology

    1990-09-25

    wavelets and a duality principle, (with J. Z. Wang), CAT Report #213. 23. A general study of maximal robust stability regions, (with H.N. Mhaskar ), Cir...Review of Progress in Applied Computational Electromagnetic Society, 1990, 329-337. 26. On multivariate robust stability, (with H. N. Mhaskar ), CAT...applica- tions, (with H. Diamond), Num. Math, Vol. 57 (1990), 105-121. 155. A general study of maximal robust stability regions, (with H.N. Mhaskar ), Cir

  1. Optimal Sector Sampling for Drive Triage

    DTIC Science & Technology

    2013-06-01

    known files, which we call target data, that could help identify a drive holding evidence such as child pornography or malware. Triage is needed to sift...we call target data, that could help identify a drive holding evidence such as child pornography or malware. Triage is needed to sift through drives...situations where the user is looking for known data.1 One example is a law enforcement officer searching for evidence of child pornography from a large num

  2. Binocular Rivalry and Head Worn Displays

    DTIC Science & Technology

    2007-12-01

    is viewed by one eye at the same time that the pilot views the nat- ural world, or a simulation, with both eyes (a type of augmented vision). The...Behar et al. (1990), a large num- ber of helicopter pilots reported at least one visual complaint, such as visual discomfort, headache, blurred...transparent HWD. About 70% of pilots noted that vision occasionally and unin- tentionally alternated between their left and right eye either during or after

  3. EMP Design and Test Guidelines for Systems in Mobile Shelters

    DTIC Science & Technology

    1993-12-01

    interfaces and should come together at only one point in the total system. The inner skin of the shelter is usually aluminum and serves as the...incorporated. Producibility considerations may require tests. A very thin alumi- num skin can provide adequate panel shielding but cannot be mated to other...I circuit test. V)It Figure 44ePowertor Synchronous pulserFiure 44ower P test setup. Is Gerwator YOUT ve |vs Figure 45. Power test 3-+ sync Rording

  4. Irondale DBCP Control System, Rocky Mountain Arsenal, Review of 1987- 1988 Operations

    DTIC Science & Technology

    1989-09-01

    indicate detectable levels of DBCP, demonstrating that the system is effective in preventing the migration of DBCP off the Rocky Mountain Arsenal ...IRONDALE DBCP CONTROL SYSTEM ROCKY MOUNTAIN ARSENAL REVIEW OF 1987/1988 OPERATIONS PREPARED BY o n For W. E. Adcock . ,d Pi J. A. Obel C. Y. Chiang...MMINTAIN ARSENAL , REVIEW OF 198711982 ,. HJNOING NUMS.:2 OPERATIONS I ADOC, W. t., OBEL, J. A., CHIANG, C. Y. i. PERFOR,;ING ORGANIZATION NAME(S

  5. Multi-Sensory Features for Personnel Detection at Border Crossings

    DTIC Science & Technology

    2011-07-08

    temporal distribution of gait beats [5]. At border crossings, animals such as mules, horses, or donkeys are often known to carry loads. Animal hoof...17.4%), and seven people with a dog (5.9%), where the ani- mals can be a mule, a donkey , a horse, or a dog, and the num- ber in the parentheses... donkeys , or mules are perceptually distinct from human foot- step sounds. In order to imitate the perceptual discrimina- tion abilities of human

  6. Control System Design Language Implementation of a Gas Turbine Starting Controller.

    DTIC Science & Technology

    1984-06-01

    THESIS _ CONTROL SYSTEM DESIGN LANGUAGE IMPLEMENTATION OF A GAS TURBINE STARTING CONTROLLER by Richard Preston Riley June 1984 *1Thesis Advisor: A. A...CONTRACT OR GRANT NUM11101(s) Richard Preston Riley S. P01111SOMNM @R11ANS ATION NAME AND ADDRESS iG. PROGRAM ELEMENT. PROJECT. TASKAREA A WORKC UNIT...Design Language Implementation of a Gas Turbine Starting Controller by *J.4 Richard Preston Riley Lieutenant Commander, United States Navy B.S

  7. Prototype Manufacturing Technologies: Conversion of Munitions Components into Higher Value Products

    DTIC Science & Technology

    2012-05-21

    sustainable green coating technologies. Th e optical processes for laser welding em ployed expedited the m anufacturing process and increased precision and...will enable the development of rapi d response preci sion manufacturing t echnologies usi ng a num ber of unique material options Current...delivery of the product to the customer. After a review of the current state of the art for lighter weight materials as well as the practicality of

  8. Proceedings of the Ground-Water Detection Workshop Held at Vicksburg, Mississippi on 12-14 January 1982.

    DTIC Science & Technology

    1984-12-01

    it to the originator . The findings in this report are not to be construed as an official ’ Department of the Army position unless so designated by...north to south) and is also at about the right depth considering a dielectric constant of approximately 5.5. The num- erous diffractions originating in...patterns can also be seen. There are likely structural causes for these flow and drainage patterns. Many streams originate in the Elburz Mountains; how

  9. The Computational Complexity of Two-Level Morphology,

    DTIC Science & Technology

    1985-11-01

    At65 991 THE COMPUTATIONAL COMPLEXITY OF TUO-LEVEL MORPHOLOGY 1/1 (U) MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB G E BARTON...9 PE~RORuNG ORGANIZATION NAME ANO ADDRESS o. PROGRM~ ELEMENT PROjECT TASK Artificial Intelligence Laboratory AREA4 WORK UNIT NUM@ERS 545 Technology... ARTIFICIAL INTELLIGENCE LABORATORY A.I. Memo No. 856 November, 1985 THE COMPUTATIONAL COMPLEXITY OF TWO-LEVEL MORPHOLOGY G. Edward Barton, Jr. ABSTRACT

  10. Finite Element Methods: Principles for Their Selection.

    DTIC Science & Technology

    1983-02-01

    the finite element methods. 39 Various statements in the literature that certain mixed methods work well inspite of the fact that the LBB (BB...method, displacement and mixed methods , various adaptive approaches, etc. The examples discussed in Sections 2 and 3 show that the same computational...performance and their relation to mixed methods , SIAM J. Num. Anal., to appear. 5. F. Brezzi, On the existence uniqueness and approximation of saddle-point

  11. The study of plant tissue by optical coherent microscopy method

    NASA Astrophysics Data System (ADS)

    Chirskaya, V. V.; Margaryants, N. B.; Zhukova, E. V.

    2016-08-01

    The article presents the results of application of the optical coherent microscopy technique using a high-resolution automatic Linnik interference microscope to study the structure of plant tissues exemplified by surface periderm layers of a tuberous nightshade (solánum tuberosum) bulb. The results of 3D visualization of the structure of the sample under examination are provided. Scanning depth was 32 µm, with axial and lateral resolution of the device 1 µm.

  12. Polyurethane Foams for Aircraft Shock Mounts. IV. Other Polyols.

    DTIC Science & Technology

    1982-06-01

    MECHANICAL PROPERTIES A series of polyether foams based on polyol mixtures of Pluracol 718 and Polymeg 2000 were developed by NSWC as vibration damping...Report OTHER POLYOLS July 80 - Sept 81 6. PERFORMING ORG. REPORT NUMBER 7. AUTHOR(*) S. CONTRACT OR GRANT NUM@ER 8) James V. Duffy S* PERFORMING...Hydrolytically Stable Foam Polyurethane Foam Aircraft Shock Mounts Polyether Foam Vibration Damping Foam 1 20. ABSTRACT (Continue on reveee ,side it necoseary ad

  13. Analysis of Vietnamization: Data Management and Quality Control

    DTIC Science & Technology

    1973-07-01

    units. These variables include the total num- ber of units; the number of units with prime missions of hamlet/ village security, lines of communication ...rvne~a VI x (bobdbt," 30 for province P.. .3 VI x(n +ndint) it 30 for province P 0a 2 V2x .(ao+ad+a) 30 for province P o d t a3frroicP etc. 3 V3 x (a

  14. Genetic and Physiological Control of Protective Antigen Synthesis by Bacillus anthracis

    DTIC Science & Technology

    1985-07-01

    Minimal I with 5 g of vitamin-free Casamino acids (Difco) and 10 mg of thiamine hydrochloride . Antisera. All antisera were kindly supplied by personnel of...Q0. Unclassified AD___________ REPORT NUM3ER SIX GENETIC AND PHYSIOLOGICAL CONTROL OF PROTECTIVE ANTIGEN SYNTHESIS BY BACILLUS ANTHRACIS ANNUAL...Proof that pX02 is involved in cap3ule synthesis came from experiments in which the plasmid was transferred by CP-51-mediated transduction and by a

  15. Syntactic Analysis in a Speech Understanding System

    DTIC Science & Technology

    1975-08-01

    be able to separate the lexical goodness from the syntactic goodness of the theory and nake Judgments as to their relative importance. In a syntax...It is important, however, to minimize the number of predictions which are made and to nake the predictions as accurate as possible. In this... TEENS TENS CLASSES /MONTH/ /WEEKDAY/)))) (LISPXPRINT (QUOTE (G: SPEECHGRAMMAR)) T) (RPAQQ SPEECHGRAMMAR ($/ $/$ $’AND $/CENTS $/DOLLARS $/NUM

  16. Stability of Low Embankments on Soft Clay. Part 3. Centrifuge Tests and Numerical Analysis.

    DTIC Science & Technology

    1984-11-01

    findings of these two workers and others (notably Naylor, 1975), Zytynski(1976) developed CRISTINA (Critical State Numerical Algorithm). Basset et al (1981...Preliminary tests, October 1981 - March 1982 - Report to the Department of Environment, University of Cambridge. Magnan, J.P., Humbert , P., Belkeziz, A. and...strain Models, Proc. IV Int. Conf. on Num. Met. in Geomechanics, Edmonton, Canada, June 1982, pp.327-336. Magnan, J.P., Humbert , P. and Mouratidis, A

  17. Electronic Packaging and Interconnect Technology Working Group Report (IDA/OSD R&M (Institute for Defense Analyses/Office of the Secretary of Defense Reliability and Maintainability Study).

    DTIC Science & Technology

    1983-08-01

    EVALUATION M. Nunn J. Osborn T. Coppola G. Mayer CABLING & FIBER OPTICS STRUCTURAL INTEGRATED CONNECTORS A. Glista COMPOSITES SYSTEMS OF J. Bird F.Crossman...mechanical product design functions required to implement the electronic design into the final hard- ware assembly. Included are the following levels...greatest num- ber of system failures in the field. The interconnection design goal of the future should be to put more functionality or circuits on the

  18. T-Cell Proliferation Involving the CD28 Pathway is Associated with Cyclosporine-Resistant Interleukin 2 Gene Expression

    DTIC Science & Technology

    1987-12-01

    Security Classification) T-CELL PROLIFERATION INVOLVING THE CD28 PATHWAY IS ASSOCIATED WITH CYCLOSPORINE-RESISTANT INTERLEUKIN 2 GENE EXPRESSION 12. PERSONAL...Cyclosporins,. T Lymphocytes) r’jh ,,.. "’’ .. - | Gene Expression 19. ABSTRACT (Continue on reverse if necessary and identify by block num’ber) DTIC...American Society tor Microbiology T-Cell Proliferation Involving the CD28 Pathway Is Associated with Cyclosporine-Resistant Interleukin 2 Gene Expression

  19. Capability Driven Robotic Swarms in Reconnaissance-Based Operations

    DTIC Science & Technology

    2008-05-02

    TEMPORARY*** (just makes sure each bot achieves max cap. delivery) NotDone=0; CHist =[]; Alert=’MAX REACHED’ Alert2=’MIN REACHED’ PosHistory...i); %Sums all of the individual capabilities 117 end CHist =[ CHist CTotal]; for z=1:length(Cd...8217) hold on; disp(’DONE’) T=0:dt:dt*(length( CHist )-1); n=length(T); 119 CDisp=[]; for TgtNumber=1:1:NumTgts for a=1:1:n

  20. An Auroral Ionospheric Investigation: A Preliminary Report on Electron Density Profiles

    DTIC Science & Technology

    1976-11-01

    U.S. DEPARTMENT OF COMMERCE National Technical Information Service AD-A033 273 AN AURORAL IONOSPHERIC INVESTIGATION A PRELIMINARY REPORT ON ELECTRON...SERVICE U. S. DEPARTMENT OF COMMERCE - ~ SPRINGFIELD, VA. 22161 71, -7-~s T -71 T 7 r,-- -7 -. SECURITY CLASSIFICATION OF THIS PAGE (Wen Data Entered...eroblem. A PRELIMINARY REPORT ON ELECTRON DENSITY S.-- LRFORMING ro REORTlNUm. PROFILES. 7. AUTHOM(s) .. CONTRACT Of GRANT NUMSER( e ) E . P. Szuszczewicz and

  1. Load Transfer Mechanisms in Anchored Geosynthetic Systems

    DTIC Science & Technology

    1990-12-20

    Code) 10 SOURCE OF FUNDING NUM(TWERS Bldg. ’ 10 PROGRAM PROJECT TASK WORK UNIT ELEMENT NO NO NO ACCESSION NO. oling AFB, DC 0332-44&8 6.1102F 2302 C1 I1...Investigated in Plane Direct Shear ........ 9 3. Direct Shear Testing Apparatus ...................... 10 4. Displacement of Sand Grains Around Moving...of Velocity Characteristics . ..................................... 22 10 . Relative Contributions of Friction and Passive Resistance to Pullout

  2. Electrochemical and Chemical Complications Resulting from Yeast Extract Addition to Stimulate Microbial Growth

    DTIC Science & Technology

    2016-09-22

    Standard dry air.12 (1) UNS numbers are listed in Metals and Alloys in the Unified Num- bering System, published by the Society of Automotive Engineers...Ecorr values of 316L in aerobic and deoxygenated seawaters with YE addition were nearly identical, with standard deviations overlapping at all times ... Standard Form 298 (Rev. 8/98) REPORT DOCUMENTATION PAGE Prescribed by ANSI Std. Z39.18 Form Approved OMB No. 0704-0188 The public reporting

  3. Electron Emission from Conductors Subjected to Intense, Short-Pulse Electric Fields

    DTIC Science & Technology

    1987-06-01

    showed that for 10-ns pulse lengths, anodized alumi- num surfaces could hold off more than twice the electric field strength of bare aluminum...shorter, 3-ns pulse lengths, anodizing was less effective at improving suppression of electron emission, while surface finish became the important...pulsewidth of 10 ns. The front end of the pulser, along with a typical output pulse , is shown in Fig. 1. The vacuum coaxial line is about 6-ns long, and

  4. Predicting Military Recruiter Effectiveness: A Literature Review

    DTIC Science & Technology

    1987-04-01

    past 20 years, the U.S. Armed Forces’ all-volunteer concept has placed considerable pressure on recruiters to attract sufficient num- bers of qualified...alternative to civilian job opportunities. Additionally, military recruiters must attract to the service individuals who either already possess technical...Scale - 30 items intended to measure the subject’s attitude toward a Navy career. c. Career Motivation Survey - a 39-item attitude scale, measuring

  5. Interaction of Tacrine at M1 and M2 Cholinoceptors in Guinea Pig Brain

    DTIC Science & Technology

    1993-01-01

    Alzheimer’s disease used for the preparation of cerebral cortex and cerebel- [1]. While oral doses alleviated some symp- lure for M, and M2 binding...determined by the Hartree Alzheimer’s disease progressed. Therefore, modification of the Lowry protein assay [10]. THA’s efficacy is yet to be...implications in the a radioligand binding technique. The equilibrium dis- sociation constant (KD) and apparent maximum num-treatment of Alzheimer’s disease 131

  6. An Object-Oriented XML Schema for the MIP Joint Command, Control, and Consultation Information Exchange Data Model

    DTIC Science & Technology

    2006-06-01

    biological-agent-type-subcategory-code biological-agent-type-identification-num biological-agent-type-persistency-code CHEMICAL -AGENT-TYPE chemical -agent-type...id (FK) chemical -agent-type-category-code chemical -agent-type-subcategory-code chemical -agent-type-identification-numb chemical -agent-type-persistency...organisation-type-category-code government-organisation-type-category-code ROUTE-TYPE AMMUNITION-TYPE RADIOACTIVE-MATERIEL-TYPE CHEMICAL -MATERIEL-TYPE

  7. Care of War Veterans with Mild Traumatic Brain Injury - Flawed Perspectives

    DTIC Science & Technology

    2009-04-01

    TBI. The remaining cases are clinically similar to sports concussions , involving brief loss of conscious- ness (usually lasting seconds to a few...service mem- bers who have had concussions experience one or more persistent symptoms2 — much higher than the 3 to 5% rate expected on the basis of...after mild TBIs.4 The relationship between the num- ber of concussions sustained and outcomes has not consistently demonstrated a dose response

  8. Essays in the Economics of Procurement,

    DTIC Science & Technology

    1993-01-01

    Effect ................ 88 4. The General Model of Profit Policy Regulation ................... 90 5. Num erical Exercise...wishing to elicit desirable behavior (i.e., reduction of moral hazard) on the part of contractors, award the contract to the most efficient firm (i.e...to facilities capital have any effect on investment behavior of contractors. See Schmidt (1993). 6 For details, see Rogerson (1992c). 7 Rogerson

  9. The Design and Operation of a Real-Time Polynuclear Aromatic Hydrocarbon (PAH) Monitor for the Analysis of Combustion Products Formed in the Incineration of Navy Colored Smoke Compositions.

    DTIC Science & Technology

    1984-08-01

    TS-FNTimeS(TIMEDATE) 280 !INPUT "ETROEAO ~I(1CS DATE( 8CHS )".OprS.DateS 290 !INPUT "ENTER SAMPLE NAME( 18CHS).RIW NUMBER", SarnpieS. Run num 300 ! INPUT...NAM’E( 8CHS )".SourceS 860 !INPUT "ENTER EXCITATION WIVELENGTH(NM) .BANDIDTHNM. DYE( 8CHS )".LaUex.. ndwth.DyeS 870 !INPUT "POWER(WATTS).REP RATE(HZ)".P

  10. Submarine Structure Modeling and Analysis for Life-Cycle Management: Phase 2

    DTIC Science & Technology

    2008-05-01

    spéciaux de coque pour le cas de la jonction de plaque qui ne contiennent pas de chevauchements de matière. Une très bonne concordance est obtenue...de la jonction de plaque qui ne contiennent pas de chevauchements de matière. Une très bonne concordance est obtenue entre les résultats numériques et

  11. Documentation and Analysis of Rock Island Underseepage Data.

    DTIC Science & Technology

    1980-03-01

    dated 17 January 1980. The study was conducted during the period January-1978 through September1979. Mr. R. W. Cunny, Soil Mechanics Division (SMD), Geo...millimetres miles 1.609344 kilometres 4 DOCUMENTATION AND ANALYSIS OF ROCK ISLAND UNDERSEEPAGE DATA PART I: INTRODUCTION Background 1. During the period ...underseepage that could re- sult in piping and failure. Piezometer ranges were installed at a num- ber of locations within the RID, and over a period

  12. Laminates for Ballistic Protection

    DTIC Science & Technology

    1975-02-01

    Textile Research &Inginearing Division 1S. NUM11ER OF PAGES N I ,aN4MotN.lInNOfDoe ISANSUITY CLASS. (of this eport0) 1 ~~,fICATIONf DOVINGRA3DING5 WS...Kevlar and glass laminates using an areal density of 11.6 kg/m and a maximn load of 82N (200 lb.). The Kevlar lamintes survived 1000 cycles but

  13. Mecânica celeste.

    NASA Astrophysics Data System (ADS)

    de Luca, N.; Ferraz-Mello, S.

    Contents: Os princípios da mec@OSC@@CCF@anica celeste. O problema de 2-corpos. O sistema de equações canônicas. A teoria das perturbações. O movimento de um satélite artifical. A teoria lunar e o movimento de outros satélites naturais. A teoria planetária. Procedimentos numéricos.

  14. Products purchased from family farming for school meals in the cities of Rio Grande do Sul.

    PubMed

    Ferigollo, Daniele; Kirsten, Vanessa Ramos; Heckler, Dienifer; Figueredo, Oscar Agustín Torres; Perez-Cassarino, Julian; Triches, Rozane Márcia

    2017-02-16

    This study aims to verify the adequacy profile of the cities of the State of Rio Grande do Sul, Brazil, in relation to the purchase of products of family farming by the Programa Nacional de Alimentação Escolar (PNAE - National Program of School Meals). This is a quantitative descriptive study, with secondary data analysis (public calls-to-bid). The sample consisted of approximately 10% (n = 52) of the cities in the State, establishing a representation by mesoregion and size of the population. We have assessed the percentage of food purchased from family farming, as well as the type of product, requirements of frequency, delivery points, and presence of prices in 114 notices of public calls-to-bid, in 2013. Of the cities analyzed, 71.2% (n = 37) reached 30% of food purchased from family farming. Most public calls-to-bid demanded both products of plant (90.4%; n = 103) and animal origin (79.8%; n = 91). Regarding the degree of processing, fresh products appeared in 92.1% (n = 105) of the public calls-to-bid. In relation to the delivery of products, centralized (49.1%; n = 56) and weekly deliveries (47.4%; n = 54) were the most described. Only 60% (n = 68) of the public calls-to-bid contained the price of products. Most of the cities analyzed have fulfilled what is determined by the legislation of the PNAE. We have found in the public calls-to-bid a wide variety of food, both of plant and animal origin, and most of it is fresh. In relation to the delivery of the products, the centralized and weekly options prevailed. Verificar o perfil de adequação dos municípios do Rio Grande do Sul no que tange à aquisição de produtos da agricultura familiar pelo Programa Nacional de Alimentação Escolar. Trata-se de estudo quantitativo descritivo, com análise de dados secundários (chamadas públicas). A amostra foi composta por aproximadamente 10% (n = 52) dos municípios do estado, tomando-se o cuidado de estabelecer uma representatividade por mesorregião e tamanho da

  15. Mdm36 is a mitochondrial fission-promoting protein in Saccharomyces cerevisiae.

    PubMed

    Hammermeister, Miriam; Schödel, Kerstin; Westermann, Benedikt

    2010-07-15

    The division of mitochondrial membranes is a complex process mediated by the dynamin-related protein Dnm1 in yeast, acting in concert with several cofactors. We have identified Mdm36 as a mitochondria-associated protein required for efficient mitochondrial division. Deltamdm36 mutants contain highly interconnected mitochondrial networks that strikingly resemble known fission mutants. Furthermore, mitochondrial fission induced by depolymerization of the actin cytoskeleton is blocked in Deltamdm36 mutants, and the number of Dnm1 clusters on mitochondrial tips is reduced. Double mutant analyses indicate that Mdm36 acts antagonistically to fusion-promoting components, such as Fzo1 and Mdm30. The cell cortex-associated protein Num1 was shown previously to interact with Dnm1 and promote mitochondrial fission. We observed that mitochondria are highly motile and that their localization is not restricted to the cell periphery in Deltamdm36 and Deltanum1 mutants. Intriguingly, colocalization of Num1 and Dnm1 is abolished in the absence of Mdm36. These data suggest that Mdm36 is required for mitochondrial division by facilitating the formation of protein complexes containing Dnm1 and Num1 at the cell cortex. We propose a model that Mdm36-dependent formation of cell cortex anchors is required for the generation of tension on mitochondrial membranes to promote mitochondrial fission by Dnm1.

  16. Performance of a microenviromental model for estimating personal NO2 exposure in children

    NASA Astrophysics Data System (ADS)

    Mölter, Anna; Lindley, Sarah; de Vocht, Frank; Agius, Raymond; Kerry, Gina; Johnson, Katy; Ashmore, Mike; Terry, Andrew; Dimitroulopoulou, Sani; Simpson, Angela

    2012-05-01

    A common problem in epidemiological studies on air pollution is exposure misclassification, because investigators often assume exposure is equivalent to outdoor concentrations at participants' homes or at the nearest urban monitor. The aims of this study were: (1) to develop a new microenvironmental exposure model (MEEM), combining time-activity data with modelled outdoor and indoor NO2 concentrations; (2) to evaluate MEEM against data collected with Ogawa™ personal samplers (OPS); (3) to compare its performance against datasets typically used in epidemiological studies. Schoolchildren wore a personal NO2 sampler, kept a time-activity diary and completed a questionnaire. This information was used by MEEM to estimate individuals' exposures. These were then compared against concentrations measured by OPS, modelled outdoor concentrations at the children's home (HOME) and concentrations measured at the nearest urban monitoring station (NUM). The mean exposure predicted by MEEM (mean = 19.6 μg m-³) was slightly lower than the mean exposure measured by OPS (mean = 20.4 μg m-³). The normalised mean bias factor (0.01) and normalised mean absolute error factor (0.25) suggested good agreement. In contrast, the HOME (mean = 31.2 μg m-³) and NUM (mean = 28.6 μg m-³) methods overpredicted exposure and showed systematic errors. The results indicate that personal exposure can be modelled by MEEM with an acceptable level of agreement, while methods such as HOME and NUM show a poorer performance.

  17. Study of Modern Instrumentation and Methods for Astronomic Positioning in the Field

    DTIC Science & Technology

    1987-03-01

    C CALL NORMEN (BN,N,ZBSBQB,AB,NA) C DO 1 1=1,N 1 NUM(I)=o DET=I. DO 2 L=1,N DO 3 M=l,N IF (NUM(M).NE.0) COTO 5 D(M) = ABS (B(MM)) GOTO 3 5 D(M) = 0...18 1=1,N 18 K=K+NUM(Ii KV = (N*(N+1))/2 LOG = FALSE. IF (K.EQ.KV) LOG=.TRUE. C CALL NORMEN tB,N,N,ZB1,SB1,QB1,AB1,NA) IF (N.GE.6) D(6)=AE.*AB1 IF...N.GE.5) D(5)=QB*QB1 - IF (N.GE.4) D(4)=SB*SB1 IF (N.GE.3) D(3)=ZB*ZB1 IF (N.GE.2) D(2)=1/DET D(1)=DET RETURN END C C C SUBROUTINE NORMEN (AN,M,Z,S,QAG,NA

  18. Addressing practical challenges in utility optimization of mobile wireless sensor networks

    NASA Astrophysics Data System (ADS)

    Eswaran, Sharanya; Misra, Archan; La Porta, Thomas; Leung, Kin

    2008-04-01

    This paper examines the practical challenges in the application of the distributed network utility maximization (NUM) framework to the problem of resource allocation and sensor device adaptation in a mission-centric wireless sensor network (WSN) environment. By providing rich (multi-modal), real-time information about a variety of (often inaccessible or hostile) operating environments, sensors such as video, acoustic and short-aperture radar enhance the situational awareness of many battlefield missions. Prior work on the applicability of the NUM framework to mission-centric WSNs has focused on tackling the challenges introduced by i) the definition of an individual mission's utility as a collective function of multiple sensor flows and ii) the dissemination of an individual sensor's data via a multicast tree to multiple consuming missions. However, the practical application and performance of this framework is influenced by several parameters internal to the framework and also by implementation-specific decisions. This is made further complex due to mobile nodes. In this paper, we use discrete-event simulations to study the effects of these parameters on the performance of the protocol in terms of speed of convergence, packet loss, and signaling overhead thereby addressing the challenges posed by wireless interference and node mobility in ad-hoc battlefield scenarios. This study provides better understanding of the issues involved in the practical adaptation of the NUM framework. It also helps identify potential avenues of improvement within the framework and protocol.

  19. Expected degree for RNA secondary structure networks.

    PubMed

    Clote, Peter

    2015-01-15

    Consider the network of all secondary structures of a given RNA sequence, where nodes are connected when the corresponding structures have base pair distance one. The expected degree of the network is the average number of neighbors, where average may be computed with respect to the either the uniform or Boltzmann probability. Here, we describe the first algorithm, RNAexpNumNbors, that can compute the expected number of neighbors, or expected network degree, of an input sequence. For RNA sequences from the Rfam database, the expected degree is significantly less than the constrained minimum free energy structure, defined to have minimum free energy (MFE) over all structures consistent with the Rfam consensus structure. The expected degree of structural RNAs, such as purine riboswitches, paradoxically appears to be smaller than that of random RNA, yet the difference between the degree of the MFE structure and the expected degree is larger than that of random RNA. Expected degree does not seem to correlate with standard structural diversity measures of RNA, such as positional entropy and ensemble defect. The program RNAexpNumNbors is written in C, runs in cubic time and quadratic space, and is publicly available at http://bioinformatics.bc.edu/clotelab/RNAexpNumNbors. © 2014 Wiley Periodicals, Inc.

  20. Using analytic derivatives to assess the impact of phase function Fourier decomposition technique on the accuracy of a radiative transfer model

    NASA Astrophysics Data System (ADS)

    Sanghavi, Suniti; Natraj, Vijay

    2013-04-01

    Fourier decomposition of the phase function is essential to decouple the azimuthal component of the radiative transfer equation for multiple scattering calculations. This decomposition can be carried out by means of a direct numerical method based on the definition of the Fourier transform (numFT), or by an expansion of the phase function in terms of spherical Legendre polynomials (sphFT). numFT requires interpolation of the phase function between discrete angles, leading to spurious errors in the final computations. This error is difficult to quantify by means of intensity-only computations, since it is hard to determine the absolute accuracy of any given approach. We show that a linearization (analytic computation of derivatives) of the intensity with respect to parameters governing the phase function can be compared against results using the finite difference method, thereby providing a self-consistency test for characterizing and quantifying the error.We have applied this approach to two linearized versions of the Matrix Operator Method, which are identical in all respects except that one uses numFT while the other uses sphFT. In both cases, we compute the derivatives of the intensity with respect to aerosol parameters governing scattering in the simulated atmosphere. Comparison of the derivatives against their finite difference estimates shows a reduction of error by several orders of magnitude when Legendre polynomials are employed. We have also examined the effect of the angular resolution of the phase function on the error due to the numFT technique. A general reduction of error is seen with increasing angular resolution, indicating that interpolation is indeed the major error source. Also, we have pointed out a related source of error in numFT computations that occurs when Fourier decomposition is carried out on the composite phase function of a layer consisting of more than one scatterer. We conclude that an expansion of the phase function in terms of

  1. An N-terminal nuclear localization sequence but not the calmodulin-binding domain mediates nuclear localization of nucleomorphin, a protein that regulates nuclear number in Dictyostelium

    SciTech Connect

    Myre, Michael A.; O'Day, Danton H. . E-mail: doday@utm.utoronto.ca

    2005-06-24

    Nucleomorphin is a novel nuclear calmodulin (CaM)-binding protein (CaMBP) containing an extensive DEED (glu/asp repeat) domain that regulates nuclear number. GFP-constructs of the 38 kDa NumA1 isoform localize as intranuclear patches adjacent to the inner nuclear membrane. The translocation of CaMBPs into nuclei has previously been shown by others to be mediated by both classic nuclear localization sequences (NLSs) and CaM-binding domains (CaMBDs). Here we show that NumA1 possesses a CaMBD ({sup 171}EDVSRFIKGKLLQKQQKIYKDLERF{sup 195}) containing both calcium-dependent-binding motifs and an IQ-like motif for calcium-independent binding. GFP-constructs containing only NumA1 residues 1-129, lacking the DEED and CaMBDs, still localized as patches at the internal periphery of nuclei thus ruling out a direct role for the CaMBD in nuclear import. These constructs contained the amino acid residues {sup 48}KKSYQDPEIIAHSRPRK{sup 64} that include both a putative bipartite and classical NLS. GFP-bipartite NLS constructs localized uniformly within nuclei but not as patches. As with previous work, removal of the DEED domain resulted in highly multinucleate cells. However as shown here, multinuclearity only occurred when the NLS was present allowing the protein to enter nuclei. Site-directed mutation analysis in which the NLS was changed to {sup 48}EF{sup 49} abolished the stability of the GFP fusion at the protein but not RNA level preventing subcellular analyses. Cells transfected with the {sup 48}EF{sup 49} construct exhibited slowed growth when compared to parental AX3 cells and other GFP-NumA1 deletion mutants. In addition to identifying an NLS that is sufficient for nuclear translocation of nucleomorphin and ruling out CaM-binding in this event, this work shows that the nuclear localization of NumA1 is crucial to its ability to regulate nuclear number in Dictyostelium.

  2. Farmers' stress and coping in a time of drought.

    PubMed

    Gunn, Kate M; Kettler, Lisa J; Skaczkowski, Gemma L A; Turnbull, Deborah A

    2012-01-01

    Farmers as a group have unique attitudes, sources of stress and a heightened risk of suicide. In the context of a prolonged drought and associated stress and increased risk of mental-health problems, this study provides an insight into the levels of psychological distress experienced by different demographic groups within the Australian farming community. The study also addresses a significant gap in the literature by exploring ways in which this unique cohort copes and may better cope, with the inevitable challenges of life 'on the land'. A sample of 309 drought-affected South Australian farmers and their spouses (M=51.81, SD=11.69) completed questionnaires containing measures of psychological distress (Kessler Psychological Distress Scale) and coping (situational version of the COPE) in response to a recent stressor. There was no significant difference detected between the levels of distress reported by men and women. Younger farmers (25-54 years) were experiencing significantly higher levels of distress than those in the 55-64 age group but not those aged 65-74 years. The most commonly employed coping strategies were planning, acceptance and active coping and least used were alcohol/drug use, denial, behavioural disengagement and religion. Gender, age-group and the type of stressor (ie farm related, non-farm related, combination) were found to affect farmers' choice of some coping strategies. A multiple regression analysis suggested that behavioural disengagement (&num;946;=.28, p < .05), suppression of competing activities (&num;946;= .20, p .05), venting (&num;946;= .18, p < .05), alcohol/drug use (&num;946;= .18, p < .05), and mental disengagement (&num;946;=.12, p < .05) all significantly and positively predicted distress in this population, collectively accounting for 34

  3. Vectors control importance on leishmaniasis transmission.

    PubMed

    Oliveira Filho, A M; Melo, M T

    1994-01-01

    We reviewed the control of transmission of leishmaniasis regarding chemotherapy, reservoirs elimination, vaccination and insect control through the use of chemical insecticides. We also discussed complementary measures like monitoring traps, impregnated bednets and curtains, repelents, pheromones, biological control, etc. A cost comparison of insecticide interventions through the use of products belonging to the four main chemical groups was also done, comparing together conventional formulations versus a slow-release insecticide developed by the Núcleo de Pesquisas de Produtos Naturais, Universidade Federal do Rio de Janeiro. We finally did recommendations on the situation that would justify an insecticide intervention to control sandflies.

  4. DEZ ANOS DE EXPERIÊNCIA DO COMITÊ DE ÉTICA EM PESQUISA DA SECRETARIA DE SAÚDE DO DISTRITO FEDERAL, BRASIL

    PubMed Central

    Novaes, Maria Rita C. G.; Guilhem, Dirce; Lolas, Fernando

    2009-01-01

    O objetivo deste artigo é relatar a experiência do Comitê de Ética em Pesquisa da Secretaria de Estado de Saúde do Distrito Federal (CEP/SES/DF) Brasil, durante o período de 10 anos a partir de sua fundação. Trata-se de uma avaliação descritiva e documental, na modalidade estudo de caso, utilizando-se a totalidade de projetos protocolados no CEP/SES/DF (N° 052/08) nesse período. As pendências mais freqüentes dos projetos foram: termo de consentimento livre e esclarecido (30%), folha de rosto (25%), metodologia (20%), curriculum vitae (12%), planilha de orçamento (9%), outros (4%). O relato das atividades do CEP/SES/DF no período de 10 anos revelou, através de sua produtividade, a legitimidade do processo de análise ética dos protocolos visando à proteção dos participantes da pesquisa. PMID:19888441

  5. Methodologie de conception numerique d'un ventilateur helico-centrifuge basee sur l'emploi du calcul meridien

    NASA Astrophysics Data System (ADS)

    Lallier-Daniels, Dominic

    La conception de ventilateurs est souvent basée sur une méthodologie « essais/erreurs » d'amélioration de géométries existantes ainsi que sur l'expérience de design et les résultats expérimentaux cumulés par les entreprises. Cependant, cette méthodologie peut se révéler coûteuse en cas d'échec; même en cas de succès, des améliorations significatives en performance sont souvent difficiles, voire impossibles à obtenir. Le projet présent propose le développement et la validation d'une méthodologie de conception basée sur l'emploi du calcul méridien pour la conception préliminaire de turbomachines hélico-centrifuges (ou flux-mixte) et l'utilisation du calcul numérique d'écoulement fluides (CFD) pour la conception détaillée. La méthode de calcul méridien à la base du processus de conception proposé est d'abord présentée. Dans un premier temps, le cadre théorique est développé. Le calcul méridien demeurant fondamentalement un processus itératif, le processus de calcul est également présenté, incluant les méthodes numériques de calcul employée pour la résolution des équations fondamentales. Une validation du code méridien écrit dans le cadre du projet de maîtrise face à un algorithme de calcul méridien développé par l'auteur de la méthode ainsi qu'à des résultats de simulation numérique sur un code commercial est également réalisée. La méthodologie de conception de turbomachines développée dans le cadre de l'étude est ensuite présentée sous la forme d'une étude de cas pour un ventilateur hélico-centrifuge basé sur des spécifications fournies par le partenaire industriel Venmar. La méthodologie se divise en trois étapes: le calcul méridien est employé pour le pré-dimensionnement, suivi de simulations 2D de grilles d'aubes pour la conception détaillée des pales et finalement d'une analyse numérique 3D pour la validation et l'optimisation fine de la géométrie. Les résultats de calcul m

  6. Optimization of Power Systems Using Real Coded Genetic Algorithms

    NASA Astrophysics Data System (ADS)

    Deep, Kusum

    2008-10-01

    This talk highlights the recently proposed Real Coded Crossover Operator, called the Laplace Crossover (LX) of [1] and Real Coded Mutation Operator called Power Mutation (PM) of [2], wherein The performance of LX and PM is compared with Heuristic Crossover (HX) and Non-Uniform Mutation (NUM) and Makinen, Periaux and Toivanen Mutation (MPTM). The test bed is a set of 20 test problems available in global optimization literature. Various performance criterion like computational cost, success rate, solution quality, efficiency and reliability are reported using two kinds of analysis. The results show that LX-PM outperforms all other GAs considered. In this paper, the above algorithms are extended for obtaining global optimal solution of constrained optimization problems. Constraints are handled using the parameter less approach proposed by Deb and the six RCGAs described above are modified accordingly. Comparison is shown with other existing RCGAs using Simulated Binary Crossover (SBX) and Polynomial Mutation (POL) of [3], [4]. Inclusion of two operators, SBX and POL, gives rise to two more combinations namely, LX with POL and SBX with PM. Two new RCGAs namely, LX-POL and SBX-PM are proposed by taking these two operators into account. Thus, in all, nine RCGAs are used for comparative study, namely: LX-POL, LX-PM, LX-MPTM, LX-NUM, HX-PM, HX-MPTM, HX-NUM, SBX-POL and SBX-PM. A set of 25 benchmark test problems are chosen, consisting of linear/nonlinear objective function and equality/inequality constraint. Comparison is made with respect to percentage of success, the average number of function evaluations and execution of successful runs. It is observed that the overall success rate of LX-POL is better than all other RCGAs. Based on extensive analysis, it is concluded that LX-POL clearly outperform other RCGAs considered in this study. The problem of optimization of Directional Over current Relay is modeled as a nonlinear constrained optimization problem. It is required

  7. Urine cytology of nonurothelial malignancies-a 10-year experience in a large multihospital healthcare system.

    PubMed

    Savant, Deepika; Bajaj, Jaya; Gimenez, Cecilia; Rafael, Oana C; Mirzamani, Neda; Chau, Karen; Klein, Melissa; Das, Kasturi

    2017-01-01

    Urine cytology is the most frequently utilized test to detect urothelial cancer. Secondary bladder neoplasms need to be recognized as this impacts patient management. We report our experience on nonurothelial malignancies (NUM) detected in urine cytology over a 10-year period. A 10-year retrospective search for patients with biopsy-proven NUM to the urothelial tract yielded 25 urine samples from 14 patients. Two cytopathologists blinded to the original cytology diagnosis reviewed the cytology and histology slides. The incidence, cytomorphologic features, diagnostic accuracy, factors influencing the diagnostic accuracy, and clinical impact of the cytology result were studied. The incidence of NUM was <1%. The male:female ratio was 1.3. An abnormality was detected in 60% of the cases; however, in only 4% of the cases, a primary site was identified accurately. Of the false negatives, 96% was deemed as sampling errors and 4% was interpretational. Patient management was not impacted in any of the false-negative cases due to concurrent or past tissue diagnosis. Colon cancer was the most frequent secondary tumor. Sampling error attributed to the false-negative results. Necrosis and dirty background was often associated with metastatic lesions from colon. Obtaining history of a primary tumor elsewhere was a key factor in diagnosis of a metastatic lesion. Hematopoietic malignancies remain to be a diagnostic challenge. Cytospin preparations were superior for evaluating nuclear detail and background material as opposed to monolayer (Thinprep) technology. Diagnostic accuracy was improved by obtaining immunohistochemistry. Diagn. Cytopathol. 2016. © 2016 Wiley Periodicals, Inc. Diagn. Cytopathol. 2017;45:22-28. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.

  8. Relationships between milk fatty acids composition in early lactation and subsequent reproductive performance in Czech Fleckvieh cows.

    PubMed

    Stádník, L; Ducháček, J; Beran, J; Toušová, R; Ptáček, M

    2015-04-01

    Increase of milk yield after calving causes changes in milk fatty acids (FA) composition and simultaneously corresponds with reproduction performance decrease. The objective of this study was to evaluate the relationships between milk FA group composition (SFA, saturated fatty acids; MUFA, monounsaturated fatty acids; and PUFA, polyunsaturated fatty acids) during the first 5 lactation weeks and subsequent reproductive results (INT, calving to first service interval; NUM, number of services per conception, and DO, days open) in Czech Fleckvieh cows. A total of 1231 individual milk samples from 382 cows were collected and subsequently analyzed. Simultaneously, body condition score (BCS) was weekly evaluated as well. Software SAS 9.1 was used for statistical analysis. Daily milk yields increased whereas BCS, milk fat and protein contents decreased during period observed. The reduction of basic milk components (% of fat, % of protein) was associated with increased SFA and decreased MUFA, respectively PUFA contents. Significant (P<0.01-0.05 days) increase in NUM (+0.15 to +0.29 AI dose) and DO (+8.16 to 15.44 days) were detected in cows with the lowest SFA content. On the contrary, cows with the highest content of MUFA presented significantly (P<0.01-0.05) higher values of NUM (+0.13 to +0.30) and DO (+7.26 to +15.35 days). Milk FA groups composition in early lactation potentially used as NEB indicators, especially SFA and MUFA proportion, affected subsequent reproductive results of Czech Fleckvieh cows. Therefore, its post-partum values could serve as predictors of potential fertility of dairy cows. Copyright © 2015 Elsevier B.V. All rights reserved.

  9. Current Launch Vehicle Practice and Data Base Assessment. Volume 1. Executive Summary and Report Body

    DTIC Science & Technology

    1989-06-01

    0.9769 1 II 1I 29 Vehicle Name Delta 6925/7925 1elta 7925 Space shuttle De(ta 391413924 IScout launch Vehicle I I ( SLV ) 19 , ,AT.s SUMtARY SiirT PAGE... SLV (Titan 2 SLV 24 04/19/19 (ATA SUMMAIRY S ’rI PAGE 2 NUM ENGINE or MOTOR ENGINE 6 ENGINE 7 ENGINE 8 ENGINE 9 ENGINE 10 NAME Rocket. YLR-89-NA7...Data Collection Atlas A Atlas B Atlas C Atlas D Atlas E Atlas F Atlas SLV Atlas G Atlas H Atlas/ Combine Period Centaur 57-58 58-59 58

  10. ADA Integrated Environment I. System Specification.

    DTIC Science & Technology

    1981-12-01

    returned. UNCLASSIFIED SECt AITY CLASSIFICATION O r THiS PAGE ("On’ Dese ,9nA.,d)l ,_ REPORT DOCUMENTATION PAGE BEFO scOL’No RM 1. RqEPl~ORT, NUM1191N 2...statements, symbols, names, etc.; 2. build and develop (and maintain) Ada programs by linking (and maintaining) collections of separate Ada...program build by selecting a consistent set of library units for input to the Linker. Only those units actually used shall be included; 22 INTERMETRICS

  11. Low Frequency Portable Beacon Operating Instructions

    DTIC Science & Technology

    1976-01-06

    0 0 c I-J MI lr-vus’- c 1--:’I 0 00 30. >-I-0-U I >-: *0 I a. or* I I r-1 -- 𔃾- 1C III. BATERY PACK The battery packs are 24 V, 12 A h lead acid...8217 COMPLETING FORM ! N, oBT R It. GOVT ACCESSION NO. 3. RECIPIENT’S CATALOG NUM*ERt IfARL-T-2-6-l1 4. TIXLL w.WIsJ) - S. TYPE OF REPORT A PERIOD

  12. General Overview: Atomistics of Environmentally-Induced Fracture.

    DTIC Science & Technology

    1981-05-01

    REPORT DOCUMENTATION PAGE BEOR CMTINGORM t. REPORT NUMBER 2. GOVT ACCESSION NO. 3. RECIPIENT’S CATALOG NUM9ER 4m4. E t S . TYPE OF REPQRT 4 P4ORIO...while there are some incidences of embrittle- ment which appear to be zlearly associated with hydrogen ,he 7 54) Q~o. 0> ’c L s CL3- I..) 5 21...oxygen 6 - - 416= ~62 15 P~re hydrogen -60 58 Humidrfed argon olus oxygen 5 14 eqa o1m s 5 0 0 25 30 T~me imtni Figure 4: Fast crack growth of high

  13. On-Line Real-Time Management Information Systems and Their Impact Upon User Personnel and Organizational Structure in Aviation Maintenance Activities.

    DTIC Science & Technology

    1979-12-01

    AD-AO85 III NAVAL POSTGRADUATE SCHOOL MONTEREY CA F/6 15/7 ON-LINE REAL- TIME MANAGEMENT INFORMATION SYSTEMS AND THEIR IMPA--ETC(U) UNCLASSIIED N...34&’ 1111CIPENT’S CAT ALOG NUMS9m 14. TITLE (11141 ANIN~e. ON-LINE REAL- TIME MANAGEMENT INFORMATION Master’s Thesis SYSTEMS AND THEIR IMPACT UPON USER PER- p...9.GOO*g e,ft Or too#$ pasemabin. &-we. Approved for Public Release; Ditribution Unlimited ON-LINE REAL- TIME MANAGEMENT INFORMATION SYSTEMS AND THEIR

  14. Models of the First-Term Reenlistment Decision.

    DTIC Science & Technology

    1980-09-01

    INSTRUCTIONS, & EXAMPLES - START SURVEY Whet is your soclel security num- Fe. o P thOW11 InUIIEJEIJU a below write the Pkn~erLfte in sach box beer...ovou of yowr tem mI- 6l E2 E3 E4 65 - 6 ET Ell El tay eepna ?Include ONllNom lied In tie I*ove qus- OM -U any m MO"ltr bhnis you meet,. Consider The...Comparison of the Discriminant Function and Max- imum Likelihood Approaches," Journal of Chronic Diseases , Vol. 24, 1971, pp. 125-158. Kleinman, Samuel D

  15. C6 GPMG and 40 mm AGL Weapon Integrated on RWS Mounted on TAPV Platform: Probability of Hit Methodology

    DTIC Science & Technology

    2010-09-01

    pointage de l’arme, le mouvement du véhicule et les effets d’interactions mutuelles. L’ensemble numérique de simulation et de calcul du budget...rapport traînée masse et effet du traceur. La dispersion du système de conduite de tir peut être développée pour analyser les différentes contributions...individuelles de la déviation standard du pointage du canon, poursuite de cibles, mouvement du véhicule et effet d’interaction mutuel. Le budget

  16. Reductive Elimination of H-H, H-CH3, and CH3-CH3 from Bis(Phosphine)Platinum(II), - Palladium(II), and -Nickel(II) Complexes: A Theoretical Study Using the SCF-X alpha-SW Method.

    DTIC Science & Technology

    1981-03-04

    P 7DAO96 408 MASSACHVJSETTSMINST OF TECH CAMBRIDGEF/73 REDUCTIVE ELIMINATION OF H-H, N-CH3. AND CH3-CH3 FROM BIS(PHOSP-!ETC(U)IMAR 81 A C ALAZS, K H...DOCUMENTATION PAGE BEFORE COMPLETING FORM iREPORT NUM1BER .GOVT ACCESSION No. 3. RECIPIEN ’S CATALOG NUMBER 4. TITLE (And Subtille)Reauctive Elimination of H-H...NOTES 19. KEY WORDS (Continue on rovers* side If necesseary and Identify by block numnber) reductive elimination ; SCF-Xcx-SW method 142VBSTRACT

  17. Test Report on the Qualification Program for the One-Quarter (1/4) Watt Split Stirling Common Module Cryogenic Cooler.

    DTIC Science & Technology

    1984-01-01

    lUI~ II"- NATIONAL URFAU OF E O [pgnuc TE$1 Z 9 N (0 TEST REPORT ON THE QUALIFICATION PROGRAM for the One-Quarter (1/4) Watt Split Stirling Common...q le62.... O .. . TEST REPORT ON THE QUALIFICATION PROGRAM for the One-Quarter (1/4) Watt Split Stirling Common Module Cryogenic Cooler CONTRACT NO...1/4 Watt Split Stirling Common Module Cryogenic 41- PERFORMING ORO.REPORTNHUMMER Cooler 7. AUTMDR~e) 11 . CONTRACT 00 GRANT NUM0ER4’a) Raymond M

  18. Development and Test of HMPT-500

    DTIC Science & Technology

    1974-12-01

    KICV - st Input Data Number of Teeth , Driver - 47.0000 Number of Teeth , Driven - 54.0000 Center Distance - 8.4166 Pressure Angle - 19.9988 Diametral...CONTRACT OR GRANT NO . ORIGINATOR’S REPORT NUMBER (S) DAAE07-72-C-0200 b. PROJECT NO. C. Ob. OTHER REPORT NO(S) (Any oathr num ber. t11t may be aeaiged this...and used existing component configurations in a large number of places. Only in those instances where space considerations became overriding were new

  19. An Analysis of a Finite Element Method for Convection-Diffusion Problems. Part II. A Posteriori Error Estimates and Adaptivity.

    DTIC Science & Technology

    1983-03-01

    UNCLASSIFIED N G SZYMCZAK ET AL. MAR 83 BN-i@82 F/G 12/1 NL I hhhhhhh EhhhhhhhhhhhE mhhhhomhhlhhhEIEEIEEEEEIlUso o.4 Q.8 L-A -J1 IIIII1 L MICROCOPY...AN ANALYSIS OF A FINITE ELEMENT METHOD FOR CONVECTION-DIFFUSION PROBLEMS PART II: A POSTERIORI ERROR ESTIMATES AND ADAPTIVITY by W. G. Szymczak Y 6a...ESTIMATES AND ADAPTIVITY 6. PERFORMING OR. REPORT NMBER 7. AUTNOR(e) S. CONTRACT OR GRANT NUM11CR’ s) W. G. Szymczak and I. Babu~ka ONR N00014-77-0623 S

  20. TacTex09: Champion of the First Trading Agent Competition on Ad Auctions

    DTIC Science & Technology

    2010-02-01

    server computes the average position for adver- tiser a by taking the sum of positions over all of the adver- tiser’s impressions ( suma ) and dividing...by the number of impressions: averagePositiona = suma enda − starta (1) Suppose that we already know each rank value. Then we can express suma as...follows: suma = ∑ b : rankb≤ranka max(0,min(endb, enda)− starta) (2) The contribution of each advertiser b to suma is the num- ber of impressions for

  1. A Social History of the Tenth Cavalry, 1931-1941

    DTIC Science & Technology

    1976-06-11

    organizing the "I • Old Sante Fe Trail, the Wild West Show and the American Royal Livestock show all of which performed locally. Lieutenant Colonel Davison...34l NUM1EI4(d) Jesse JackoJ, MAJ., USA 9. PERFORmING ORGANtZATION MNAMC AND ADORESS 10. PROGRAM !LCMENT. PROjECT, TASK ARCA IT VONERStudent at the US...or discouraged from using many of the exchange and recreational facilities on post. Even so, they were loyal troopers who performed creditable service

  2. Cast Aluminum Bonding Study

    DTIC Science & Technology

    1988-05-01

    fabricated using P?-’r;est11 bur)ld II19 te(hnll I Oly with 6 cIsL nqs. The cast a lumi num alloy used was A357 . The sur- face preparation was phosphoric acid...from a cast aluminum alloy designated A357 . The bonding surfaces of the adherends were prepared using PAA. One primer and two adhesives considered...System, Cast Aluminum Lap Shear 18 11 Bond Area of 350°F Adhesive System, Cast Aluminum Lap Shear 19 vi LIST OF TABLES TABLE PAGE 1 A357 Chemical

  3. An Agile Systems Engineering Process: The Missing Link?

    DTIC Science & Technology

    2011-05-01

    has a num- ber of standards available such as ISO 12207, ISO 9001 and the Capability Maturity Model Integrated (CMMI®) [24,25,26]. The CMMI was a...Of The Air. Life Cycle Systems Engineering. 2007 24. CMMI® for Development, Version 1.2. Pittsburgh: Carnegie Mellon University, 2006. 25. “ ISO 9001 ...such as the Defense Acquisition Guidebook (DAG) Chapter 4, EIA-632, IEEE std 1220-2005, ISO /IEC 15288, and ISO /EIC 26702 [18,19,20,21,22]. In

  4. The Reynolds Number for Transition on a Flat Plate in the RAE 4 ft x 3 ft Low Turbulence Wind Tunnel.

    DTIC Science & Technology

    1980-05-30

    from two pieces of 4 ft square ’ bakelized paper board’ J in thick. This material was chosen as having a good and robust surface in the ’as-manufactured...AD-A093 459 ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND) F/B 20/4 THE REYNOLDS NUM4BER FOR TRANSITION ON A FLAT PLATE IN TH4E RAE 4-ETC(U) MAY...IAN[DARDk IUA A UNLIMITED v~’ BR75309 TIM. MEMO TEM. X ADO 1854 o 185 0ROYAL AIRCRAFT ESTABLISHMENT THE REYNOLDS NUMBER FOR TRANSITION ON A FLAT PLATE

  5. A Parallel QR Method Using Fast Givens’ Rotations.

    DTIC Science & Technology

    1984-01-01

    fill-in am-t^-t. elimination of £**+,> Sameh and Kuek [SK78] proposed a simple elimination strategy which, subject to (P2) below, adheres to regular...matrices <?’*) of order 2 are equal to standard Givens’ rotations. Applying 2x2 matrices C**’ to band matrices is the order prescribed by Sameh and Kuck...Rath, W., "Fast Givens Rotations for Orthogonal Similarity Transformations," Num. Math. 40, 47-56 (1982). |SK78] Sameh , A.H. and Kuck, D.J, "On

  6. Reaction-diffusion in the NEURON simulator

    PubMed Central

    McDougal, Robert A.; Hines, Michael L.; Lytton, William W.

    2013-01-01

    In order to support research on the role of cell biological principles (genomics, proteomics, signaling cascades and reaction dynamics) on the dynamics of neuronal response in health and disease, NEURON's Reaction-Diffusion (rxd) module in Python provides specification and simulation for these dynamics, coupled with the electrophysiological dynamics of the cell membrane. Arithmetic operations on species and parameters are overloaded, allowing arbitrary reaction formulas to be specified using Python syntax. These expressions are then transparently compiled into bytecode that uses NumPy for fast vectorized calculations. At each time step, rxd combines NEURON's integrators with SciPy's sparse linear algebra library. PMID:24298253

  7. Minimum Points and Views for the Recovery of Three-Dimensional Structure.

    DTIC Science & Technology

    1986-06-20

    1986 DTIC Sl LECTE. School of Social Sciences University of California, Irvine A Irvine, California, 92717 ,1’ This document s lu e oxubUiC teleaso...DOCUMENTATION BEFORE COMPLETING FORM 1. REPORT NUMS 31 2. GOVT ACCESION NO. 3- RECIPIENT’S CATALOG NUMBER 4 TITLE (and Subtile) S . TYPE or REPORT a PERIOO...COVERED Minimum points and views for the recovery Technical of three-dimensional structure .PERFORMING ORG. RPORT Nu~mER 41 1. AUTHOR( s ) 1. CONTRACT Om

  8. Étude théorique et expérimentale de la propagation des vibrations émises par un trafic ferroviaire se déplaçant à vitesse constante

    NASA Astrophysics Data System (ADS)

    Picoux, B.; Le Houédec, D.

    2002-12-01

    Dans cet article, nous présentons un modèle numérique spécialement conçu pour l'étude des vibrations basses fréquences couplant un sol stratifié à une voie ferrée supportant un train se déplaçant à vitesse constante. Les résultats ainsi obtenus sont en accord avec les observations expérimentales suivantes: pour une augmentation des vitesses, on note une majoration des déplacements à la surface du sol et dans la voie. Dans le but de la validation qualitative du modèle numérique, des mesures sur sites dont le sol est particulièrement “mou” ont également été réalisées. Une chaîne de mesures composée d'une caméra vidéo numérique rapide, d'un vélocimètre laser et de plusieurs accéléromètres est disposée aux abords d'une voie ferrée dans la région d'Amiens. Des tests géomécaniques et sismiques préalables sont mis en œuvre pour évaluer les paramètres mécaniques du sol. A l'issue de ces mesures, la vitesse des ondes de Rayleigh est calculée (proche de 100m/s). Les résultats issus des mesures de vidéo numérique rapide sont comparés à ceux du modèle. Les déplacements maximum ainsi que les vitesses particulaires à la surface du sol peuvent alors être retrouvés bien que la totalité du signal n'ait pas été prise en compte dans le modèle.

  9. Atomic Collisions and Plasma Physics.

    DTIC Science & Technology

    1984-01-31

    AD-R141 320 ATOMIC COLLISIONS AND PLASMA PHYSICS(U) PITTSBURGH UNIV i/il PR DEPT OF PHYSICS AND ASTRONOMY M R BIONDI 3i JAN 84 RFGL-TR-94-044 Fi9628...OF STANDARDS t963 A % : C~44 h ’ I ATOMIC COLLISIONS AND PLASMA PHYSICS Manfred A. Biondi Department of Physics and Astronomy University of Pittsburgh... PLASMA PHYSICS Final - 11/1/80 - 12/31/83 6 PI kF%oMINC. OR. REPORT NUMA4I R 7. AUTHO R(j iS CONTRACTOR GRANT NUM8ER(. * Manfred A. Biondi Fl9628-81

  10. Sentence Level Information Patterns for Novelty Detection

    DTIC Science & Technology

    2006-07-01

    technology transfer arm, has sold the worldwide marketing rights to the drug Daca in return for cash payments and royalties should the drug be marketed...34> Stockbroker Lehman Brothers estimates that it may eventually generate Dollars 250m in sales.</s> <s docid="FT943-9461" num=൓"> Daca is still in the early...of Daca overcame two main types of drug resistance - a common cause of failure of chemotherapy - in various tumours, including colon, skin and lung

  11. Summary of Meteorological Observations, Surface (SMOS), for Atsugi, Japan.

    DTIC Science & Technology

    1985-03-01

    o.0j K".01 TOTAL MUMMER OF OSISVAIONS DI RNA VUCE A ME T SkOS / 1. CEILING VERSUS VISIBILITY j ’ C C T PERCENTAGE FREQUENCY OF OCCURRENCE 𔃻 (FROM...96.61 98.8 99.e2 99.71 99.j1;.0. 0100.01100.01100.0i1CD.0 TOTAL NUM6E1 Of OBStIVATIONS 14 4. 01 R NA VuCE ANME T SMOS / f! b CEILING VERSUS VISIBILITY

  12. On Programming Transputers to Capture Ada Multitasking for the NPS autonomous Underwater Vehicle

    DTIC Science & Technology

    1991-12-01

    Beginning Location End Location AUTQPILOT MARS MARS AVOIDANCE PLUTO SATURN EXEMISSION SATURN PLUTO GUIDANCE VENUS SATURN MONITOR PLUTO PLUTO NAVIGATION...wsl, in, out, ws2) [IOOOJINT d: SEQ SKIP 51 d. Pluto - File: plutoh.occ #OPTION "AGNVW" #INCLUDE "hostio-inc" PROC pluto.hamness (CHAN OF INT Mars2Pluto...INTEGER; type PATH-ARRAY is array (1..NUM_PATHS) of INTEGER; type PROGRAMS is (EARTH, MARS, VENUS, SATURN, PLUTO ); - These constants defined for passing

  13. Toward In-situ Building R-Value Measurement,

    DTIC Science & Technology

    1984-01-01

    Shingles Roof Panel Plywood Fiberglass Wool Insulation No Guard ypical HF with Wal I Built-in Guard Panel Indoor Thermocouple Figure 2. Typical construction...13 by $51 by 2.5 num. We tied two types of HFS’s, one with and one The lIPS’s were calibrated in a Rapid-k heat flow 2-- L -~-Logger Asphalt ...103 124 102 106 103 104 of fiberglass wool insulation was obtained from di- 300-450 97 99 96 101 l08 98 rectly behind the south wall sensor location

  14. Development of Biodegradable Implants for Use in Maxillofacial Surgery.

    DTIC Science & Technology

    1983-07-20

    A0-1171 673 DEVELOPMENT OF BIODEGRRDADLE IMPLANTS FOR USE IN v NARXILLOFNCIAL SURGERY (U) SOUTHERN RESEARCH INST I UIRNINGHRN AL R L DUNN 26 JUL 63...1qbI A , I, I. *J A IT W. W.-,.*- -. ,V SoR I-EAS-83-63 1 (0 DEVELOPMENT OF BIODEGRADABLE IMPLANTS rN FOR USE IN AILLOFACIAL SURGERY 0Annual Technical...Implants for Use in Maxillofacial. Surgery Annual (Jul 82 - June 83) S. PERFORMING ORG0. REPORT NUMSER 1. AUTWOR(s) 1. CONTRACT 04 GRANT NuM6911R(s

  15. Studies on the Mechanism of Action of the in vitro PGB sub x Effect. V. The Effect of Hypoxia.

    DTIC Science & Technology

    1981-11-19

    UNCLASSIFIED 9CURITY CLASIFICATION OP T.,1S PAGE jfm boa REPORT DOCUMENTATIOM PAGE ___________________ I. REPOT NUM11ERI GOvy £CCmftm INo K. Iticginur...rileI T-’ By.--- - aroo DIstritl’-:I DNPC or NADC-8 1245-60 INTRODUCTION The therapeutic use of PGBx (1, 2, 3, 4) in the treatment of human ischemic...pathologies was suggested by successful animal experiments in a number of laboratories (5, 6, 7, 8, 9, 10, 11, 12). Before human trials may be attempted

  16. Nature Abhors an Empty Vacuum,

    DTIC Science & Technology

    1981-08-01

    Schrodingers cat .) Perhaps it migt still be possible to approximate the standard view (in which "observations" replace mixed states by pure states) in...8217AD-A106 362 MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTE--ETC F/ S 20/10I NATURE ABHORS AN EMPTY VACUUM,(U) AUG Si M MINSKY N0001479’C-0260...COVERED S ŕ Nature Abhors an Empty Vacuumemorandum _ _ _ _ _A. PERFORMING ORG. REPORT NUMBER J. AUTHN0R(a) S .. CONTRACT onGRANT NUM0E .,- ’.A Marvin

  17. Premature Personnel Attrition in the U. S. Marine Corps

    DTIC Science & Technology

    1976-12-01

    RPORQT MUN69ft 7 i G.QVT ACCjEUIOn A. L NCCIP19f I’S -AT &LOG NUM111101 4. TITLE I’s" SWW#Ie~j 5 Typt. 9fiat anpR &PERIQO COveinto Premature Personnel...examined the problem of premature discharges of non-prior service male enlisted service members due to their failure to meet minimlim behavioral or...1473 I Jan 7__ S/N 0102-014-6601 tcCuM,•- CLASIV.CATION OF THIS PA=GZ.- DO..i Etf,.E) Premature Personnel Attrition in the U.S. Marine Corps by Robert

  18. Scientific Discovery as Problem Solving

    DTIC Science & Technology

    1989-02-19

    ELECTE MIAR 13 1990 uncaass ie* REPORT OOCUMENTATION PAGE 4. Rpm S at- f- , l1 IE-T,,CiVl "d.RfG$ Vuclassif Led la . $|C~mTY C Sg .w, 7ytjU .*--.m--ST’ 3...NTICAT* *0 4UM ONGANZAT’ft (Of 4000oat Smns as Moutoring Organizato’ NOOOW4-86-K-067, is. ss Ifp su. &W iW coo) 10- Musa oP UNOI NuM - 4- PROGRAM P"AC...they have gained access to more detailed accounts of scientific work: for example the diaries and correspondence of Darwin (Gruber, 1974), and the

  19. Design and Analysis of a Low Speed Drag Plow for Use in Deep Snow

    DTIC Science & Technology

    1992-09-01

    low friction coating of ultra-high blended into the main body with a 900 inclusive molecular weight polyethylene ( UHMWPE ) at- angle (Fig. 3). This...constructed of alumi- fourth member of the 4-bar mechanism. This as- num plate overlaid with UHMWPE . The half-width sembly includes the front elevating skid...of the model has a 6.6-mm-thick skirt with 4.8-mm-thick plow, which turns with the link relative to the plow wings and ears. The UHMWPE sheet stock

  20. Object-Oriented Methodology for Marine Corps Software Development

    DTIC Science & Technology

    1994-09-01

    6O* ’time (,n run portion of PFT** * SDNCO =SDNCO * *Stat Duty NCO (E-6 and abov,ý)** * sex = MjF] * sit -UPS = [(ini-num)]2 * sit_on_s’core = t(int...runtime, situps, pullups, hang time, sex ) Compute Run Scores: Figure 8: Module 2.1 _Do While there are more Marine run time values Do Case Cas seye...34 module • Zse sex - T. use female chart table if run tirne.seconds >z 01 and <= 09 then .ound seconds value up to 10 else if run time.sex.onds >- 11 and

  1. Research and Development of Wound Dressing in Maxillofacial Trauma.

    DTIC Science & Technology

    1984-07-11

    Identify by block num~ber) -During the contract period three batches of poly-L(-) lactide were prepared0 and blended with material in stock to give 1,904...Figure 1 In Vitro Release of Povidone-lodine from Microcapsules 16 Figure 2 Povidone Iodine 70% in Microcapsules (30% Poly-L(-) 16 *1 lactide Coating) On...During the contract period three batches of poly-L(-) lactide were prepared *and blended with material in stock to give 1,904 grams of polymer with an

  2. Fleet/TYCOM Level Survey of Armament Handling Problems - Task One of the Naval Aviation Armament Support Equipment Program Management Study

    DTIC Science & Technology

    1977-06-21

    Weapon MK43 MOD 1 6 bWG 2482995 Beam Weapons cradle hoisting HLU-216/E 6 DWG 616956-1 PW t 4I Beam Hoisting Guided missile MHU-129/E 2 DWG 647-AS-l100...Manufacturer. (10) Model Num~bcr. (11) Manufj.tut(:r’s Chassis Serial Number. 2. TD ,, assignment of USN, Registration Numbers will be in accordance...requited for Arminwent lldndj.inq EqAmvit~., The 4%.viiaton4o4? Mince perqomtw aboard’,CV CV.I -type_ afhipp t td shore a ctivi j~J u have b riaep rici(g

  3. A Novel Predictive Model for Determining Filtration Volume vs. Time for Nano Compounds with Multi-modal Particle Size Distribution

    DTIC Science & Technology

    2013-11-22

    wet cake 12. Filtration pressure 13. Time(s) 14. PSD Particle Size 1 (um) 15. PSD Particle Size 2 (um) 16. . 17. . 18. . M . PSD Particle Size N...um) Please note that the nn_input array is a variable size array of size M Columns and N rows (number of data points to be fed into the neural...is as simple as that is an array of 1 column by M rows containing the Filtrate Mass (g) variable at specific times. V. NEURAL NETWORK PERFORMANCE

  4. A Prototype Decision Support System for Marine Corps Officer Allocation Policy Analysis.

    DTIC Science & Technology

    1987-09-01

    INSTRUMENT IO(NT1FICAfION NUMBER ORGANIZATION SIVaicabilo) Sk ADDRESS (Copy, Staro , and ZIP Code) WO SOURCE OF FUNDING NUMBERS ..- PROGRAM PROJCT...C FITLVL(J) ,CAPCTY(K) ,ICOST,E2NUM(K) ENDIF END IF ENDIF 375 CONTINUE 370 CONTINUE END IF ELSE IF (LDO(J) .EQ. 2) THEN IF (SEX(J) .E.) THEN DO 380 L...FITLVL(J),CAPCTY(K),ICOST,E2NUH (K) ENDIF END IF ENDI F 385 CONTINUE 380 CONTINUE ELSE IF (SEX(J) .EQ. 1) THEN . DO 390 L = BEGSCH1.(MOSNUM(J),LGRD(J

  5. Electron-beam guiding by a reduced-density channel

    NASA Astrophysics Data System (ADS)

    Welch, D. R.; Bieniosek, F. M.; Godfrey, B. B.

    1990-12-01

    A new regime of density-channel guiding of a relativistic electron beam in air has been found using a three-dimensional charged-particle simulation code, and confirmed in a double-pulse electron-beam experiment. The guiding results from the temperature dependence of the electron-neutral momentum-transfer frequency nu(m). The mechanism does not require a deep channel to obtain a significant guiding force. For the 13-kA MEDEA II (and beams of similar parameters), guiding persists 10 nsec into the beam pulse, with the force per channel displacement as high as 4 G/cm.

  6. JOVIAL/Ada Microprocessor Study.

    DTIC Science & Technology

    1982-04-01

    LITTLEJOH4N F30602-80- C -0153 UNCLASSIFIED RADC-TR-82-61 NL NON EEEEEEOE~ EEEEEohEEmhEE mEEmhEmhEmhEE EE MENEEEEEEEEEEmEENhE- l." 1.0 - ~ 111.I25 .II4 1.6 V N T...Dunbar, Michael B. Littlejohn and Kerry White AM= FOR PDX RaW DA*1 1$RTION UNLIDTIC ELECT - ROME AIR DEVELOPMENT CENTER C ) Air Force Systems Command...GRANT NUM111911.) Terence E. Devine Michael B. Littlejohn Terry L. Dunbar Kerry White F3O6O2-80- C -Ol53 9. 10911FORUING ORGANIZATION NAME ANO ADDRESS 10

  7. A High-Resolution Bathymetry Map for the Marguerite Bay and Adjacent West Antarctic Peninsula Shelf for the Southern Ocean GLOBEC Program

    DTIC Science & Technology

    2004-05-01

    uicontrol (’Style’,’Text’,... ’Units’,’normalized...8217, ’Position’, [.38 0.95.06 .05],... ’String’,’start’,’backgroundcolor’,’white’); startday= uicontrol (’Style’,’Slider’,... ’Units’,’normalized’,... ’Position...34Value"));’,... ’set(start day~valu,"String",’,... ’num2str(get(start-day,’Val"))),’],’backgroundcolor’,’yellow’); start day-min = uicontrol

  8. Raízes pós-mitológicas da Astronomia Clássica

    NASA Astrophysics Data System (ADS)

    di Bartolo, L.; Villas da Rocha, J. F.

    2004-02-01

    Apresentamos como a invenção de um modelo astronômico e cosmológico fundado em causas naturais foi um processo gestado num ambiente cultural específico, o do advento do pensamento pós-mitológico, que tem como sua raiz mais funda a trajetória particular da Grécia Antiga, com ênfase na resolução de uma grave crise social e a evolução do mundo clássico para o contexto espiritual de um império universal.

  9. Engineering Design Handbook Rotational Molding of Plastic Powders

    DTIC Science & Technology

    1975-04-15

    2.5 Hot Plate Experiments 5-2 5-3 Part Quality 5-2 5-3.1 Percent Gel 5-2 5-3.2 Impact Tests 5-2 5-3.3... plated nickel and nick- el-copper, and cast and machined Be/Cu. The thermal conductivities of these materials are given in Table 2-1. There are also...some high strength alumi- num alloys. These alloys are very susceptible to a hard coating process. The coating is not a plating ; it does not chip or

  10. JetCurry: Modeling 3D geometry of AGN jets from 2D images

    NASA Astrophysics Data System (ADS)

    Kosak, Katie; Li, KunYang; Avachat, Sayali S.; Perlman, Eric S.

    2017-02-01

    Written in Python, JetCurry models the 3D geometry of jets from 2-D images. JetCurry requires NumPy and SciPy and incorporates emcee (ascl:1303.002) and AstroPy (ascl:1304.002), and optionally uses VPython. From a defined initial part of the jet that serves as a reference point, JetCurry finds the position of highest flux within a bin of data in the image matrix and fits along the x axis for the general location of the bends in the jet. A spline fitting is used to smooth out the resulted jet stream.

  11. Camp Laguardia, Korea. Limited Surface Observations Climatic Summary (LISOCS). Parts A-F.

    DTIC Science & Technology

    1988-03-01

    FATPER SEQVEE/PAC S3ATI7, NUM2EL: 4 136 ST ATICN NAME: CAMP LAEJAPDIA KOALA PEVIOJ bF 16CO0D: 77-6B MONTH: NOV HOUR8SLSTI: J--I ,"[ C E IL Ilib VItPL...TEMFEVATUPES USAFEC7A C FRTOM SUMMARY OF DAY DATA8 AIR 6987ŚCR SERV ICE/MAC STATION NUMBER: 4𔃻,𔄀C STATION NAME: CAMP LAGUARDIA KOALA PERIOD OF RCCORD: 71-b7

  12. PyXel: A Python Package for Astronomical X-ray Data Modeling

    NASA Astrophysics Data System (ADS)

    Ogrean, Georgiana

    2017-01-01

    PyXel is a open-source Python package for modeling astronomical X-ray imaging data. It is primarily built on NumPy, SciPy, Astropy, and emcee. The package aims to provide a common set of image analysis tools for astronomers working with extended X-ray sources. I will present an overview of its features, and analysis examples based on public Chandra data.The code is available for download on GitHub (https://github.com/gogrean/PyXel), and contributions to it are welcome.

  13. PyVO: Python access to the Virtual Observatory

    NASA Astrophysics Data System (ADS)

    Graham, Matthew; Plante, Ray; Tody, Doug; Fitzpatrick, Mike

    2014-02-01

    PyVO provides access to remote data and services of the Virtual observatory (VO) using Python. It allows archive searches for data of a particular type or related to a particular topic and query submissions to obtain data to a particular archive to download selected data products. PyVO supports querying the VAO registry; simple data access services (DAL) to access images (SIA), source catalog records (Cone Search), spectra (SSA), and spectral line emission/absorption data (SLAP); and object name resolution (for converting names of objects in the sky into positions). PyVO requires both AstroPy and NumPy.

  14. Reaction-diffusion in the NEURON simulator.

    PubMed

    McDougal, Robert A; Hines, Michael L; Lytton, William W

    2013-01-01

    In order to support research on the role of cell biological principles (genomics, proteomics, signaling cascades and reaction dynamics) on the dynamics of neuronal response in health and disease, NEURON's Reaction-Diffusion (rxd) module in Python provides specification and simulation for these dynamics, coupled with the electrophysiological dynamics of the cell membrane. Arithmetic operations on species and parameters are overloaded, allowing arbitrary reaction formulas to be specified using Python syntax. These expressions are then transparently compiled into bytecode that uses NumPy for fast vectorized calculations. At each time step, rxd combines NEURON's integrators with SciPy's sparse linear algebra library.

  15. K2SC: K2 Systematics Correction

    NASA Astrophysics Data System (ADS)

    Aigrain, Suzanne; Parviainen, Hannu; Pope, Benjamin

    2016-05-01

    K2SC (K2 Systematics Correction) models instrumental systematics and astrophysical variability in light curves from the K2 mission. It enables the user to remove both position-dependent systematics and time-dependent variability (e.g., for transit searches) or to remove systematics while preserving variability (for variability studies). K2SC automatically computes estimates of the period, amplitude and evolution timescale of the variability for periodic variables and can be run on ASCII and FITS light curve files. Written in Python, this pipeline requires NumPy, SciPy, MPI4Py, Astropy (ascl:1304.002), and George (ascl:1511.015).

  16. Ureka: A Distribution of Python and IRAF Software for Astronomy

    NASA Astrophysics Data System (ADS)

    Hirst, P.; Slocum, C.; Turner, J.; Sienkiewicz, M.; Greenfield, P.; Hogan, E.; Simpson, M.; Labrie, K.

    2014-05-01

    As astronomical data processing expands from our historical platforms into modern Python applications, users are faced with installing and maintaining large numbers of heterogeneous dependencies. A handful of scientific Python distributions make installing key packages easy, but don't cater for specific needs such as integration with IRAF. We have therefore recently released a beta version of a new astronomical software distribution for Linux and OSX, known as Ureka. Ureka is based around STScI Python and dependencies, notably Python, NumPy, IRAF, SciPy, AstroPy, Matplotlib and Tk. It also contains data reduction packages for Gemini, HST, JWST and other observatories, alongside various complementary tools.

  17. Formación y evolución de planetas gigantes

    NASA Astrophysics Data System (ADS)

    Benvenuto, O. G.; Brunini, A.

    Presentamos el estado actual del trabajo que estamos realizando en el estudio de la formación de planetas gigantes. Detallamos los algoritmos numéricos necesarios para realizar este tipo de cálculo. Presentamos algunos resultados de la formación de objetos con masas de hasta una docena de veces la del planeta Júpiter, resaltando las principales caracteríticas. Finalmente detallamos los problemas que pensamos abordar en un futuro cercano en este tema de investigación.

  18. The Hysteresis and Incremental Collapse of Complex Structures: A paradigm for the Fatigue Failure of Materials

    DTIC Science & Technology

    1991-03-01

    for public release; distribution is unlimited A D-A 34 B 1 E~S) . MONITORING ORGANIZATION REPORT NUM3ER(S)AD-A234 831 C I( 4 . 6b. OFFICE SYMBOL 7a...Code) 10.’SOURCE OF FUNDING N1BERS Bolling Air Force Base PROGRAM PROJECT ITASK WORK UNIT ELEMENT NO. j NO. NO. ACCESSION NO. Washington, DC 20332...VARYING NUMBER OF CYCLES LIST OF FIGURES A. ASTM Type 2 Axial Load Tension Specimen B . Axial Load Fatigue Specimen 1. Typical Stress-Strain Loop for

  19. France’s War in Mali: Lessons for an Expeditionary Army

    DTIC Science & Technology

    2014-01-01

    Charles Grémont, Tuaregs et Arabes dans les forces armées colo- niales et maliennes: Une histoire en trompe-l’œil, Note de l’Ifri, Paris: Ifri, 2010...Serval: Le retour de la manœuvre aéroterrestre dans la profondeur, Réflexions Tactiques, Numéro Spécial, Paris: Armée de terre , Centre de doctrine...interarmes à dominante infanterie, Armée de terre , 2001, p. 15. 37 Opération Serval, p. 4. 14 France’s War in Mali: Lessons for an Expeditionary Army

  20. Application of Dual-Tree Complex Wavelet Transforms to Burst Detection and RF Fingerprint Classification

    DTIC Science & Technology

    2009-09-01

    with One Detected Pulse Per Row. % When Variable Width Pulses are Detected , ALL % Non -MaxWidth Pulses are Zero - Padded in last Columns.% 45 % PlsWdth... Pad /Extend length of processed ’TmpZ ’ by 2*PlsMax to help % mitigate pulse detection issues the end of input Signal ’Z’ ExtZ=round (2*PlsMax); 65...B_range % burst Data = Signal(b,:); Data = [zeros (1 ,1000),Data ,zeros (1 ,1000)]; % Zero pad data ... prior to filtering 35 Data = filtfilt(num

  1. Aircraft Trajectories Computation-Prediction-Control (La Trajectoire de l’Avion Calcul-Prediction-Controle). Volume 3

    DTIC Science & Technology

    1990-05-01

    modble d’avion type, par comparaison avec lea lois optimales en boucle ouverte obtenues par un algorithme num~rique de gradient projet6, sans ... sans subir les d6routements et modifica- tions de profil de vol qu’impose la planification a court terme et qui perturbent tant la fluidit6 du trafic...l’intdgration des diff~rentes phases de contr6le depuis le depart jusqu𔃾 l’arriv6e. A cette fin, il faut que les s6quences d’arriv6e et les s6quences de

  2. Population Genetics of Hemoglobin E, Thalassemia and Related Genetic Polymorphisms in Thailand.

    DTIC Science & Technology

    1978-03-01

    Work Unit 123, Population genetics of hemoglobin B, thalass ia , and related genetic poly- morphisms in Thailan d Literatu re Cited. 1. Reference...r~P It $T I CATALOG NUM SIR _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ( / ) 4. TI tLE (.14Sl4.Hf s) I . 1~~~~~~~P RIPa *14 ,~~~~~~~~vER (D ~ ‘ ) Population ... Genetics of H uoglobin E, Thalasseutia ) Final Rep.rt ’ and Related Genetic Polymorphisms in Thailand. / 1 l96S~ -~ l97Qr .~ S. P~~~unMnta oae. nuript

  3. Origen de los rayos cósmicos a las más altas energías

    NASA Astrophysics Data System (ADS)

    Horvath, J. E.; Gouveia dal Pino, E. M.; Medina Tanco, G. A.

    Discutimos en este trabajo la identificación de las fuentes de rayos cósmicos de las más altas energías observadas (E >= 1020 eV). Presentamos los resultados de varias simulaciones numéricas 3-D donde se calcula explícitamente el ángulo de desviación α del primario por efecto de los campos magnéticos ambientes. Con estos resultados investigamos las hipótesis de un origen extragaláctico local y halo galáctico.

  4. European Science Notes, Volume 40, Number 7.

    DTIC Science & Technology

    1986-07-01

    as Director of Research, the Queen’s ture and evolution of the 5S ribosomal Medical Center, Honolulu, Hawaii, and RNA ( 5S rRNA ). In the molecular...such as the Max Planck Institute for structural and functional study. Molecular Genetics, the Fritz Haber 5S rRNA is an integral part of the...for 5S rRNA tute of Biochemistry are funded not only which is in agreement with a large num- by the Free University of Berlin, but ber of physical

  5. Fotometría de imágenes CCD insuficientemente muestreadas

    NASA Astrophysics Data System (ADS)

    Ostrov, P. G.

    Se enfrenta el problema de la fotometría de imágenes CCD con una escala inadecuada (fwhm menor o igual que el tamaño de un pixel) y psf fuertemente variable con la posición. Se analiza, en particular, la aplicabilidad de una táctica propuesta por Massey, consistente en eliminar las vecinas débiles (utilizando una psf rudimentaria) para luego efectuar una fotometría de apertura sobre las estrellas brillantes. Se determina, mediante experimentos numéricos, la precisión alcanzada mediante esta técnica.

  6. A Note on the Stability of the Job Descriptive Index (J. D. I.).

    DTIC Science & Technology

    1978-05-01

    Center , University of Mary land , College Park 19. KEY WOR DS (Con t inue on re v e rse aids II necalaary ~ td ident ify by block num ber) Attitudes...agreement across the f i r s t and second admin is t ra t ion of the JOl and ove r the five dimens ion s of the JO l. Di scr iminant stability is...by its capacity to distinguish between the five dimensions of satisfactions , that the method bias of the JO t is relative l y insignificant , and tha

  7. Property Screening and Evaluation of Ceramic Turbine Materials

    DTIC Science & Technology

    1984-04-01

    mailing list, or if the addressee is no longer employed by your organization please notify AFWAL/MLLM, W-PAFB, OH 45433 to help us maintain a current...NUMw-i-R ___ M06054-48 7. AUIŕH(,v) q CO0.4 FRACT OR GRANT NUM AF,(7) D. C. Larsen and J. W. Adams F33615-79-C-5100 9. Pzý.woFR0mHg, ORGANIZATION NAME...Thanks are due the organizations that have contributed test samples to this program. The various .personnel in the organi- zations that have contributed

  8. Direct Measurements of Edge Diffraction from Soft Underwater Acoustic Panels

    DTIC Science & Technology

    1994-06-01

    AD- A 2 83 198 UMENTATION PAGE Form Approved rn eu to h ou r P er 0 in~ g d w * ii. fat re wle 0O M B N o . 0 7 0 4 - 1 8 8 = "rt W o00MoG&t of...SPONSORING/MONITORING ]k• •.,(•. t z ,. .•AGENCY REPORT NUMBER OFFICE OF NAVAL RESEARCH 1 AGENC REOR NUM- BOER 800 N. QUINCY ST. WSL 2 - ARLINGTON, VA 22217...kHz. (a) Directly radiated waveform. This waveform was captured with the bydrophone (b) ( O ) situated at the nominal 5-cm oflet positioa however, the

  9. The F100 Engine Purchasing and Supply Chain Management Demonstration: Findings from Air Force Spend Analyses

    DTIC Science & Technology

    2006-01-01

    spend for both spares and repairs went to the top five suppli- ers (see Table 4.1). Only two of the five, AB SKF and MPB Corpora- tion (Timken),3 were...tracts Number of NSNsa 1 United Technologies Corp. 3.8 37 96 4 16 2 AB SKF (MRC Bearings)b 1.6 16 13 10 9 3 MPB Corp. (Timken)b 1.5 15 3 5 5 4 Canadian...of Dollars Spent with Sole- Source Contracts Num- ber of Con- tracts Number of NSNs 1 AB SKF (MRC Bearings)a 4.4 24 19 31 27 2 Honeywell

  10. On the Synthesis and Characterization of Novel Aluminum-Arsenic Compounds; Crystal Structure of Et2AlAs(SiMe3)22

    DTIC Science & Technology

    1991-10-03

    ARSENIC COMPOUNDS; CRYSTAL STRUCTURE OF [Et2AIAs(SiMe 3 )2 ]2 12 PERSONAL AUTHOR(S) :ells, A.T. McPhail, and T. M. Speer 13a. ’YPE OF REPORT 13b. riME...synthesis, crystal structure , ring compound 19 ABSTRACT (Continue on reverse ir necessary &nd iaenrtiy by 6lOCK numOer) See attached. 91-12706 ITu 20...DU/DC/TR-24 ON THE SYNTHESIS AND CHARACTERIZATION OF NOVEL ALUMINUM-ARSENIC COMPOUNDS- CRYSTAL STRUCTURE OF [Et 2 A1As(SiMe 3)21 2 by R. L. Wells, A. T

  11. A Methodology for the Analysis of Programmer Productivity and Effort Estimation within the Framework of Software Conversion.

    DTIC Science & Technology

    1984-05-01

    TEST CH~ART NAT ONAL BQREAu Or s T AADS-963-’ 82 The coefficient of KCA(programmer’s knowledge of the program) initially seemed to be an error...productivity, as expected. An interesting manifestation, supporting a discovery by Oliver, was exhibited by the rating of a programmer’s knowledge of...ACCESSION NO. 3. RECIPIENT’S CATALOG NUM13ER 10 AFIT/CI/NR 84-44D _ _ ___)___________ 4. TITLE (.,d S ..benli) PR#fQP6rV/rV S . TYPE OF REPORT A PERIOD

  12. Integral Glass Covers for Silicon Solar Cells

    DTIC Science & Technology

    1974-10-31

    inorganic giass development resulting in the formulation of numerous compositions for direct fusio•n to silicon solar cells was conducted . The glasses were...glass development resulting in the formulation of num6rous compositions for direct fusion to silicon solar cells was conducted . The glasses were...2 CM EQUIV.) !0 0 Soo 5oo.00 5.00 0.000 1o.o0o kQUA•TITY 2 X 2 C &4 Figure 3. Solar cell coverglass p-orice versus quantity (Reference 1) J

  13. Applications of Numerical Conformal Mapping.

    DTIC Science & Technology

    1980-07-01

    Al A095 886 CAMBRIDGE HYDRODYNAMICS INC MA F/ A2 - APPL ICAI IONS OF NUMERICAL CONFORMAL MAPPING U) JUL AD D I MEIRON , S A ORSZAG. M ISRAELI NOI0iN...CLASSIFICATION OF THIS1 PAGE flle Dol Sneered) Q___Y , REPORT OCUMENTATION PAGE ~RAD ISTRUCTIONS~ I. REPORT NUM@Et is GOVT ACCESSION No. S . RECIPIENT’S...CATALOG NMER-...o . __ , 4. TITLE (and S uo) As O L Tm U #o V Cambridge Hydrodynamics Report No..34 Interim /echnical /pm t. Applications of Numerical

  14. The mitochondria-plasma membrane contact site.

    PubMed

    Westermann, Benedikt

    2015-08-01

    Mitochondria are dynamic organelles that are highly motile and frequently fuse and divide. It has recently become clear that their complex behavior is governed to a large extent by interactions with other cellular structures. This review will focus on a mitochondria-plasma membrane tethering complex that was recently discovered and molecularly analyzed in budding yeast, the Num1/Mdm36 complex. This complex attaches mitochondria to the cell cortex and ensures that a portion of the organelles is retained in mother cells during cell division. At the same time, it supports mitochondrial division and integrates mitochondrial dynamics into cellular architecture. Recent evidence suggests that similar mechanisms might exist also in mammalian cells.

  15. Predicting the Effects of Sugar-Sweetened Beverage Taxes on Food and Beverage Demand in a Large Demand System.

    PubMed

    Zhen, Chen; Finkelstein, Eric A; Nonnemaker, James; Karns, Shawn; Todd, Jessica E

    2014-01-01

    A censored Exact Affine Stone Index incomplete demand system is estimated for 23 packaged foods and beverages and a numéraire good. Instrumental variables are used to control for endogenous prices. A half-cent per ounce increase in sugar-sweetened beverage prices is predicted to reduce total calories from the 23 foods and beverages but increase sodium and fat intakes as a result of product substitution. The predicted decline in calories is larger for low-income households than for high-income households, although welfare loss is also higher for low-income households. Neglecting price endogeneity or estimating a conditional demand model significantly overestimates the calorie reduction.

  16. Characterization of Submerged-Arc and Gas-Metal-Arc Weldments in HY-100 Steel.

    DTIC Science & Technology

    1983-12-01

    RD-R14i 939 CHARACTERIZATION OF SUBMERGED-ARC AND GAS-METAL-ARC / WELDMENTS IN HY-IBB STEEL (U) NAVAL POSTGRADUATE SCHOOL MONTEREY CA R E THERRIEN DEC...100 Steel 6. PIERFORMING ORG. REPORT NUM11ER I.7. AUTHOW) 11. CONTRACT OR GRANT NuMMER(.) Alfred E. Therrien _O P O R ME E E T R J C .T S’ .~ S...weld toughness in submerged arc welded (SAW) 4- HY-100 steel weldments precludes this process from large 4. scale HY-100 shipbuilding production

  17. Safety Evaluation of Cannon and Recoilless Weapons

    DTIC Science & Technology

    1977-07-12

    34. REPORT NUMDER 2. GOVT ACCESSION NO. 3. RIECIPIEIT’S CATALOG NUM TdP-3-2-8051 Ř. TITLE (and Subtia.) T".YPE OF REPORT G Pf.,o1• •l U. S . AMY...TEST AND EVALUA _.---.- ’ P_ E TIONS PROC ’SAFETY .EVALUATION OF FinaL -* .ANON AND .,-OILLESS - APONS, 6. PERFORMING ORG. REPORT NUMBER 7. AUTHOR( s ) ’I...CONTRACT OR GRIANT NUMBER( s ) 9. PERFORMING ORGANIZATION NAME AND AODRESS 10. PROGRAM! ._L-MNT. PROJECT. TASK U. S . ARMY ABERDEEN PROVING GROUND

  18. Combustion of Solid Propellants (La Combustion des Propergols Solides)

    DTIC Science & Technology

    1991-07-01

    on peut s’interroger sur l’adquation des moyens engages ausceptiblea do se manifester naturellement au cours du A Ia complexit6 du probl~me... capteur d’Helmoltz; de pression lorsque Ia fr~quence vanet. Calcul num~rique et mithode expdrimentale donnent des irdsultats en bon accord, c’cst-i... naturellement , avec des niveaux stabilis~s moddr~s. mod~le de combustion (r~f. 30) et des limites de L’opinion est r~pandue que la segmentation peut l’approche

  19. Characteristics of an Atmospheric Discharge Plasma as an RF Antenna

    DTIC Science & Technology

    1982-05-27

    continuing PLASMA AS AN RF ANTENNA problem 6. PERFORMIN4G ORO . REPORT NUM99fR 7. AUTNOR(j .C ONTRACT OR GRANT MUMDERp(s) T. Dwyer, J1. R. Greig. D. P. Murphy...path) of the plasma antenna and energy to create and sustain the plasma were supplied directly in the form of an electric discharge a totally new balance...the ground plane, G. The lead was terminated in a corona ball with a small protrusion sticking out towards the laser-designated path. The end of the

  20. CHORDS: A New Temperature or Sound Speed Profile Thinning Algorithm.

    DTIC Science & Technology

    1984-05-01

    applications while reducing the number of profile points by a factor of 10. A zero value of the tolerance limit will force the subroutine to halt the...subroutine, a zero value will be returned for the number of output points (NR). 11LANK 11. DETAILED FUNCTIONAL DESCRIPTION In the following...REAL INTERP 0043 DIMENSION DIFF(MPNTS),NUM(MPNTS) 0044 DATA DIFFLT/-999V9./ 0045 NOLINuMPNTS-1 0046 C 0047 C ZERO ARRAYS 0048 C 0049 DO 9999 J=.,MPNTS

  1. Revegetation Study of Adobe Dam, Phoenix, Arizona. Task 6. Evaluation of Three Watering and Mulching Techniques on Transplanted Trees at Adobe Dam.

    DTIC Science & Technology

    1983-08-18

    34 " . . . . ... . .. ... . . . . . R !!.:.iD I -’:’co- s ONSPAGE BEFORE COMPLETING FORM 1RIE]ORT NUM ERt411110 2. GOVT ACCESSION NO. 3. RECIPIENT*S CATALOG NUMUER 4. TITLE (and...Department of Transportation, minning companies in the Phoeniz area, and the Desert Botarial Gardon . Task No. 4 "Site Characteristics." This report...USA. Harris, R . W. 1967. Factors influencing root development of container-grown trees. Proceedings of the International Shade Tree Conference 43:304

  2. Materials Evaluation in the Tri-Service Thermal Radiation Test Facility.

    DTIC Science & Technology

    1981-02-28

    AD-AI05 Off DAYTON UNIY 04N F/O 20/13 MATERIALS EVALUATION IN THE TRI-SERVICE THERMAL RADIATION TEST -"ETC(U) FEB 1 D ERODEMAN. S H WILT, R A SERVAIS...RPORT DOCUMENTATION PAGE READ INSTRUCTIONSBEFORE COMPLETING FORM "~1.REP R NUM 1.2. GOVT ACCESSION NO. 3.RECIPIENT’S CATALOG NUMBER y NAERIALS...EAB ATION INSTE - ’-LYT125 Jan 80-28 Feb 81,- 7.AUTHO- R (s Dnnis dem_ De Ged n Nichola 5N70lsonF 5 DNA I~-BY-C- 128 VaiLRR414...~ ~O NAME AN DRS q

  3. Investigation of Flight Data Recorder Fire Test Requirements

    DTIC Science & Technology

    1994-10-01

    because they are considered essential’ to the objective of this report. AD Num-- R DATE,/ 9 DTIC ACCESSION "ii) 94 NOTICE 94, 0392 .U1I I REPORT...PREPARED UNDER CCNTRACT NUMBER N 6,8O-, 2 DISTRIBUTION STATEMENT R .!ý. I SAsvg AD fV•,foe, OTICDEC 9T 50 PREvIOU$ EDITIONS ARE OBSOLETE DEC...instrumentation utilized in this senes consisted of chromel-alumel Type K thermocouples and a Gardon gauge total heat flux calorimeter. This phase also provided

  4. Consideration of Receiver Interest for IP Multicast Delivery

    DTIC Science & Technology

    2000-01-01

    A. Setup Overhead Based on current IETF standards, a common IP multicast ar- chitecture includes IGMP , PIM-SM, and MSDP; in the future a combination...of MAAA, IGMP , PIM-SM, and BGMP will be more common. Alternatives to PIM include MOSPF and DVMRP. Setting up new multicast groups in IP requires a...num- ber of steps. First, a class-D address is chosen randomly by the source. Next, hosts join the group by using IGMP to signal their local router. The

  5. FIEStool: Automated data reduction for FIber-fed Echelle Spectrograph (FIES)

    NASA Astrophysics Data System (ADS)

    Stempels, Eric; Telting, John

    2017-08-01

    FIEStool automatically reduces data obtained with the FIber-fed Echelle Spectrograph (FIES) at the Nordic Optical Telescope, a high-resolution spectrograph available on a stand-by basis, while also allowing the basic properties of the reduction to be controlled in real time by the user. It provides a Graphical User Interface and offers bias subtraction, flat-fielding, scattered-light subtraction, and specialized reduction tasks from the external packages IRAF (ascl:9911.002) and NumArray. The core of FIEStool is instrument-independent; the software, written in Python, could with minor modifications also be used for automatic reduction of data from other instruments.

  6. Polynomial Approximation Techniques for Differential Equations in Electrochemical Problems

    DTIC Science & Technology

    1981-01-15

    PRRMNOGRERTUBR Problems 6 ETRIG~.RPR U~3 7. AUTHON(s) P . CONTRACT OR GRANT NUM-4VICR) B. Stanley Pons NO00014-80-6-0107 9. PEFRIGOGNZTO AEADADES10...PROGRAM ELEMENT. PROJECT, TASK P ~flOR’INGORGAIZAIONNAMEANDADDESSAREA & WORK( UNIT NUMBERS Department of Chemistry University of Alberta NR 359-7.1.8/7...we have c = cBJ) = c B (24) Note that we have combined distance and time into one new in- dependent variable p . 10 f From the nature of the model, the

  7. Image Segmentation by Texture Using Pyramid Node Linking.

    DTIC Science & Technology

    1981-02-01

    7. ATNIC~m)TR-1008 1. A1I4O~aJa. CONTRACT on 3RAwr NumUeame) Matti Pietikainen Azriel Rosenfeld AFOSR-77-3271 S. PCNPORIMAG ORGANIZATION NAME A140... PIETIKAINEN , A ROSENFELD AFOSR-77-3271 UNCLASSIFIED TR-1008 AFOSR-TR-81-0366 NL 4 // MW .. AFOSR-TR. 81 -03 6 - LEVEL COMPUTER SCIENCE TECHNICAL REPORT... Matti Pietikdinen* Azriel Rosenfeld Computer Vision Laboratory Computer Science Center University of Maryland College Park, MD 20742 ABSTRACT In a

  8. PRESTO Digital Computer Code User’s Guide. Volume I. System Overview. Revision A.

    DTIC Science & Technology

    1980-10-31

    RELEASE; I DISTRIBUTION UNLIMITED. I f THIS WORK SPONSORED BY THE DEFENSE NUCLEAR AGENCY UNDER RDT&E RMVSS CODES 8363080464 099QAXCE50201 H25900D7j...is no longer needed. Do not return to sender. PLEASE NOTIFY THE DEFENSE NUCLEAR AGENCY, ATTN: STTI, WASHINGTON, D.C. 20305, IF YOUR ADDRESS IS...Defense Nuclear Agency 1 NUM berO18E Washington, D.C. 20305 34 74. -MONITORING AGENCY NAME & ADDRESS(I different from Controlling Office) IS

  9. Viscoelastic Behavior of High-Copper Dental Amalgam Alloys,

    DTIC Science & Technology

    1980-07-24

    A0AO87 895 ARMY INST OF DENTAL RESEARCH WASHINGTON DC F/6 6/5 wISCOELASTIC B HAVIO OF HIGH-COPPER DENTAL AMALGAM ALLOYS. (Ul UNLSIID JUL 80 E F...R - . OVT ACCESSION NO 3. RECIPIENT’S cArALCG NUM.R #t_. TILE(Zn uS. TYPE OF REPORT 6 PERIOD COVEREO ( Viscoelastic Behavior of High-Copper Dental ...f - LaA zlo B./de Simon X " J..RFORMING ORGANIZATION NAME AND ADORESS SO. PROGRA14 ,".LEET. PROJECT, TASIK ARE-. mumaiRs Division of Dental Materials

  10. The Nagant (Revolver) and the TT (Pistol)

    DTIC Science & Technology

    1974-05-20

    made to Verit) 1h1 ,iturt s l .i ins stdiciIent ton ta d herein. Thil ra:istioin is published with A Im num il .op) editing mid grphics lrcimrAtion ii...given way to a more modern weapon -- the self- loading TT pistol. Automatic pistols appeared at the end of the last century. Designers were attracted... designers had to solve a complicated problem. The new pistolj made for a 7.62-mm caliber cartridge, had to provide greater stopping power, kill a live

  11. Software Design Document Vehicle Simulation CSCI (5). Volume 3, Sections 2.5.4 - 2.6.18.12.1

    DTIC Science & Technology

    1991-06-01

    al/sim types.h heightjfield pointer to register terrainloc.h BBN HEIGHT INFO Internal Variables Variable Type Where Typedef Declared vert pointer to...vertexlist pointer to R4P3D /simnet/common/include/glob al/dai stdp.h num verts int Standard 1149 BBN Systems and Technologies Vehicles CSCI Internal Variables...Vutlble Type Where Typedef Declared x REAL /simnet/commoninclude/glob al/sim types.h y REAL /simnet/common/include/glob I al/sim types.h vert cnt

  12. DoD Electronic Data Interchange (EDI) Convention: ASC X12 Transaction Set 858 Freight Government Bill of Lading Shipment Information (Version 003010)

    DTIC Science & Technology

    1993-02-01

    shipper orders dromedary , the carrer may supply a trailer to convey the dromedary equipment. The trailer is con- sidered secondary equipment. The...Qualify in REF01. The tractor num- ber carried in this data element is the power unit for the trailer described in the N7 segment of the same equipment loop...1248 TTS 8 The identifying marks assigned to a power unit (tractor). REF03 352 Description C AN 1/80 10.7.50 930210 DEPARTMENT OF DEFENSE GOVERNMBENT

  13. SpacePy: Python-Based Tools for the Space Science Community

    NASA Astrophysics Data System (ADS)

    Morley, Steve; Koller, Josef; Welling, Dan; Larsen, Brian; Niehof, Jon

    2014-01-01

    SpacePy provides data analysis and visualization tools for the space science community. Written in Python, it builds on the capabilities of the NumPy and MatPlotLib packages to make basic data analysis, modeling and visualization easier. It contains modules for handling many complex time formats, obtaining data from the OMNI database, and accessing the powerful Onera library. It contains a library of commonly used empirical relationships, performs association analysis, coordinate transformations, radiation belt modeling, and CDF reading, and creates publication quality plots.

  14. Airborne Measurement of Aerosol Size Distributions over Northern Europe. Volume 1. Spring and Fall 1976, Summer 1977

    DTIC Science & Technology

    1980-05-29

    index extremes that could occur in the atmosphere (1. 33-0. 0 i for water and 1. 95-0. 66 i for carbon) could induce a maxi~num sizing error of about a... Atmospheric Quantities in Europe), a two- to three-year effort by eight NATO countries, as members of Research Study Group-S (h:: -8), Panel IV, AC-243, NATO...Defense Research Group, was develoned to document atmospheric electro-optical transmission properties in western and central Europe. OPAQUE

  15. Study of Raster Metafile Formats.

    DTIC Science & Technology

    1985-01-01

    Transfer Standards Virtual Device Metafile (VI)M) Metafiles Raster Reformatting System (RRS) - 20. ABSTRACT (CEm s ot neon and Idenr by block num6).. This...z44 AAAA1 i 6 8 A it* ai. A Ao a,4 -I I V- 40.044 d6 .4. aN. " m 16 uu mus UM 0 0 W 100 o 00 boIs . lw 00 0 ~6 .4 .4. ’. A ..u 1 A U m "I 1 .a 0. a4 NM

  16. Principles of Work Sample Testing. 1. A Non-Empirical Taxonomy of Test Uses

    DTIC Science & Technology

    1979-04-01

    ARI TECHNICAL REPORT TR-79-A8 Principles of Work Sample Testingi I. A Non-Empirical Taxonomy of Test Uses b y Robert M. Guion BOWLING GREEN STATE...EIODCOVERED 7. A NON-EMPtiGXAL TAXONOMY OF TEST USES 15Nv,6-1 u 7 𔄀’iPERF-ORMINGO-RG R’FEPORT Num&ER 7. AUTHOR(#) 8. CONTRACT OR GRANT NUMBER(&) 10Robert...theory, psychometrics, work sample testing , validity, content- referenced testing , criterion-refere’ced testing , latent trait theory

  17. Uncooled Infrared Imaging Face Recognition Using Kernel-Based Feature Vector Selection

    DTIC Science & Technology

    2006-09-01

    elements matrix check for correct classification end % McNemar 2by2 matrix % recall and,or,xor tables %%%n00 %number of examples...misclassified by FVS but not by GDA n10=Test_Class_Size*Num_Class-n00-n01-n11; % McNemar 2by2 matrix Table1(:,:,replications)=[n00+n01;n10+n11...diagonal elements matrix check for correct classification end % McNemar 2by2 matrix 130 % recall and,or,xor tables %%%n00 %number of

  18. Experimental Support for Evaluation of the Victoria Class Virtual Submarine (VCVS)

    DTIC Science & Technology

    2012-03-01

    Document Number: 5283-001 (Version 03) Contract Project Manager : Kelly Forbes, 613 247-0342 PWGSC Contract Number: W7711-06911 CSA: Dr. Lochlan E...SP a participé à la réalisation du projet . L’évaluation du SVCV a été menée conformément au numéro de protocole L-809 (Magee, Cain et Thompson...Resource Manager , CAE Professional Services (Canada) Inc. y R E V I S I O N H I S T O R Y Revision Reason for Change Origin Date

  19. ML-PMHT Track Detection Threshold Determination for K-Distributed Clutter

    DTIC Science & Technology

    2014-05-15

    2) Convolution to get batch PDF Calculate num samples M Gumbel params ν, β from M Calculate batch CDF Clutter peak PDF — Eq. (5) Figure 1. Framework...measurement PDF of W N − 1 times (the PDF of a sum of two independent RVs is just the convolution of the individual RV PDFs). This “batch PDF...interpretations of K-distributed reverberation ,” IEEE Journal of Oceanic Engineering, vol. 27, no. 4, pp. 800–813, 2002. 2This transformation is not

  20. Research Directions in Database Security, II

    DTIC Science & Technology

    1990-11-01

    WILLIAMS Burke Ct 286 WOLCOTT 9th Rd 795 WOOD 25th St 520 YANCEY Motley St 398 ZUZACK Arden Rd LDV> : The style of the prototype is such that the...WOLCOTT Fin Clk YANCEY Dept Mgr ZUZACK Proc Anal LDV> ;RR3: S (sortrel (project (njoin (project employee-base ’(Department Employee-Name Employee-Num...Proc Anal PROC MAHONEY Secy PROC YANCEY Dept Mgr PROC ZUZACK Proc Anal SEC BRIMER DMSO SEC FALBO Secy SEC HILL Dept Mgr SEC MITCHELL Ast DBSO SEC THOMAS

  1. Experimental Investigation of the Strength of Damaged Pressure Hulls - Phases 5 & 6: The Influence of Out-of-Circularity on Collapse

    DTIC Science & Technology

    2011-03-01

    Right of Canada, as represented by the Minister of National Defence, 2011 © Sa Majesté la Reine (en droit du Canada), telle que représentée par le... critique . Des dommages supplémentaires ont été infligés à six des cylindres d’essai, sous forme d’amincissement par corrosion artificielle, réalisée... critique n=3. L’analyse des données expérimentales reste à faire, ainsi que les simulations numériques des essais d’affaissement. Ceci fait, RDDC

  2. Survey of Pre- and Postprocessing Structural Anlaysis Software.

    DTIC Science & Technology

    1980-08-05

    first element. Page - 7 Gray et al.[28 describe two methods for automatic :enumbering of nodes for water network analysis. The method can be extended...Nat’l. Conf., ACM, Publication, Z. 69, 1969. 28. R.K.L. Gay, K.K. Chin, S.S. Chua, C.H. Chan and S.Y. So, Node Reordering Algorithms for Water ... Network Analysis, :nt. J. for Num. Meth. in Engng., Vol. 12, p. 1241-1259, 1978. 29. Preiss, K., Checking of the Topological Consistency of a Finite Element

  3. Diagnosis of Group A Streptococcal Infections Directly From Throat Gargle.

    DTIC Science & Technology

    1981-06-01

    Streptococcal Infection Strep Throat Latex agglutination 20. ARVAT(Continue an revere side it neessar and identify by block num~ber) The diagnosis of... THROAT GARGLE ,-I E. A. EDWARDS, 1. A. PH1WPS & W. C. SUITER REPORT NO. 81-20 DTIC IELECTE VAL A11OCT I lSlt P.O. BOX 8022 SAN DIEGO, CALIFORNIA 92138...AVAL MICAL RESEARCH AND DEVELOPMENT COMMAND BE0hESDA, MARYLAND £ 81 9 30 069 (. DIAGNOSIS OF QROUP A STREPTOCOCCAL INFECTIONS ~1IRECTLY FROM ThROAT

  4. Dynamic Weapon-Target Assignment Problems with Vulnerable C2 Nodes

    DTIC Science & Technology

    1988-06-01

    Approved for public release; distribution. U.4 unlimited 4. P5RrORMING ORGANIZATION REPORT NUM&ER( M 5 5 S . MONITORING ORGANIZATION REPORT NUMBE!SS) LIDS-P...WTA Problem Maino ioM with the cornespondin stadtc problem. Swc l s C a nod m ncded Mn e f a Te above resoue allocation problem will ypicaly be In the...the M4aximum Margina Return ri~ithm. works byasiinth phaos e of the Sfe Dfns Syspem. 1a this - m vrwuaip~ s quendialy ’With Z weapom beingasne to the fth

  5. Ambulatory Care Data Base (ACDB) Data Dictionary Sequential Files of Phase 1

    DTIC Science & Technology

    1989-11-01

    code DX1 DATA ELEMR1, NUMBER FOR~MAT RECORD POSITION 30 char715 IOCCURRENCESB 3,1FDEFINITION:t Primary diagnosis code taken from ICD-9-CM manual or codes...diagnosis codes taken from the ICD-9-CM manual or codes modified for the study. CODES AND VALUES See Appendix B for a listing of diagnosis codes as...POSITION 33 Num 107-171 _1_ 5 OCCURRENCES 13 DEFINITION: Procedure codes as taken from the CPT-4 manual . Modified codes for the study are included. CODES

  6. A Review of Fatigue Crack Growth of Pressure Vessel and Piping Steels in High-Temperature, Pressurized Reactor-Grade Water.

    DTIC Science & Technology

    1980-09-19

    DISTRUM~ONSREPORT DOCUMENTATION P BEFORE COMPLETING FORM I. REPORT NUM2ER. GOVT ACCESSION NO. S. RECIPIENT’S CATALOG NUMBER NUREG /CR-1576 f 4 NRL...Pipe Rupture Study Progress Report No. 40, April-June 1977, GEAP- NUREG -10207-40 (Aug. 1977). 116 26. D. A. Hale, J. Yuen and T. Gerber, "Fatigue...J. Loss, NUREG /CR 0943, NRL Memorandum Report 4064 (Sept. 1979). 35. W. H. Cullen, Jr., H. E. Watson, V. Provenzano, "Results of Cyclic Crack Growth

  7. Software Quality Metrics Enhancements. Volume 1

    DTIC Science & Technology

    1980-04-01

    W h e . D E . RE eAeDd I N S T R U C T I REPORT DOCUMENTATION PAGE BEFORE COMPLETING FORM . R OTRN80-109 V f . GOVT ACCESSION NO 2. RECIPIENT’S...Project Engineer: Daniel E. Hocking (AIRMICS) 404 894-3111 IS. KEY WORDS (C’otthe on teverve aide ifnoc.savy aid identiv W block nu=m60) Software Quality...Inspection .. 2-5 2.5 Metrics as a Quality Assurance MIS . . . . . . . . 2-9 3.0 ANALYSIS OF METRIC CONCEPTS IN OTHER ENVIRONMENTS . .3-1 3.1 Approach

  8. NetStat: A Probabilistic Network Connectivity Analysis Tool,

    DTIC Science & Technology

    1993-02-01

    of Invulnerable Communication Nets . IEEE Trans. on Circuit TheoryMay 1970 [14] Ed. Boesch, F.,et. al., Networks, An International Journal . New York...Wiley Journals , Vol. 15, Num. 2, Summer 1985 [15] Ed. Boesch, F., Large Scale Networks, Theory and Design. New York: IEEE Press, 1976 APPENDIX A...Npd..Bpd: RNumloString(DEFNODE..PD. SirnStrArrii)); $pd. Opd: RNumToSIting(DEF...LINK_.PO. SimStrAnrfi)); ?tr. .Dst: csea ((ord(i) -ord(Npd)) mod 3

  9. System Control for the Transitional DCS.

    DTIC Science & Technology

    1979-07-01

    F SYSTEM CONTROL FOR THE TRANSITIONAL OCS.(U) UN DJL 79 F C ANNAND, D E DOTY .R V KRZYZANOWSI DCAIOO-78-C-0017 WICLASSIFIED SBIE-AD-EIOO 329 M...AUTHOR(a) 0. CONTRACT OR GRANT NUM F . C. Annand, R. V. Krzyzanowski D. E. Doty DCA 100-78-C-0017 9. PERFORMING ORGANIZATION NAME AND ADDRESS 10. PROGRAM...VA 22090 2,7 14. MONITORING AGENCY NAME & ADDRESS( f different from Controlliln Office) 15. SECURITY CLASS. (of this r UNCLASSIFIED IS&. DECLASSI

  10. Metal/Ceramic Interfaces: Relationships Between Structure and Chemistry

    DTIC Science & Technology

    1992-12-31

    IT 5AI&A sof 120 I 5TRIIDUTION WOE 13 . AU I HAUT (MaXimUm 200 WOrdM) SEE ATTACHED EXECUTIVE SUMMARY 14. bU•U..UlI IiHM5 I. NUM-N UIO PA(I. Metal...mental routes such as diffusion bonding [9, 10, 16], internal oxidation [ 13 -15], and epitaxial growth of niobium overlayers on A120 3 substrates [1-8, 11...or epitaxial relationships develop after internal oxidation or epitax- ial growth respectively. Mader [ 13 , 14] and Kuwabara et al. [15] observed that

  11. Performance and Long Duration Test of a 30 kw Thermal Arcjet Engine.

    DTIC Science & Technology

    1987-11-01

    Continue on reuere if necessry and iden tify by block num ber) ’FIELD GROUP SUB. GR. Electric Propulsion, Are Electrothermal ArcJet , 21 03 Space...Performance and Long Duration for the period 28 Decemberl1984to Test of a 30 kw Thermal Arcjet 30 November 1986 E gn SJAN 2b𔄀 November 1987 Authors: Jet...performance of a 30-kWe constricted arc ammonia arcjet . This engine was based on a design developed by Avco Corporation in 1963 that delivered 978 seconds

  12. Radome Boresight Error Assessment and Systems Evaluation Test Chamber Improvements.

    DTIC Science & Technology

    1983-04-01

    DEC A ;ADJUST EXP BNE FPT5 ;DR THRU LOOP UNLESS BIN PT ADJSTED FPT7 LDA A 1IX ;GET BIN FRACTION IN ACCA LDA B 2.X I(MOD 1.4) PSH A ISAVE A PSH B ;SAVE...ll;;!a j;a a ,a;;lllllll ;;llll ; ;;alll sI "SINBCDED"-SUBROUTINE 11 BINARY TO FACYED BCD CONVERSION ROUTINE 11 ;3 LOAD ACCA ,ACCB WITH A 16 BIT BIN...NUM U LOAD INDEX REG WITH ADDRESS OF MS BYTE OF WHERE PUT PACKED BCD ANS; C-27 RETURNS WITH PAC.ED INFO IN SPEC LOCATION AND IN ACCA ,ACCB : THE LEAST

  13. No Chemisorption on Ni(111): Coverage Effects, Site Preferences and Adsorption Geometry.

    DTIC Science & Technology

    1985-09-03

    U 01TECHNICAL REPORT No. 14 In NO CHEMISORPTION ON Ni(111): COVERAGE EFFECTS, SITE PREFERENCES AND ADSORPTION GEOMETRY by Shen-Shu Sung, Roald ...Adsorption Geometry 6. pER Op ,,GoRG. R --OAT NUmSER 7. ;.-.; T) hOR ( 2) .\\B. CONTRACT OR GRANT N’,UMaEA.I) Shen-Shu Sung, Roald Hoffman and Patricia...PREFERENCES AND ADSORPTION GEOMETRY Shen-Shu Sung , Roald Hoffmann and Patricia A. ThielT t Departent of Chemistry, Cornell University, Ithaca, NY 14853

  14. Sobre os sistemas de referência celeste

    NASA Astrophysics Data System (ADS)

    Poppe, P. C. R.; Martin, V. A. F.

    2003-02-01

    Apresentamos neste trabalho, algumas discussões sobre os sistemas de referência utilizados em Astronomia. Claramente, não é possível esgotar todo este assunto num único texto, mas esperamos, contudo, que o presente material possa ser apreciado nos cursos de Introdução à Astronomia, que estão cada vez mais presentes nas atuais propostas curriculares das graduações de Física. As discussões pertinentes às "Bases de Referência Celeste", serão apresentadas em um outro trabalho.

  15. JetCurry: Modeling 3D geometry of AGN jets from 2D images

    NASA Astrophysics Data System (ADS)

    Li, Kunyang; Kosak, Katie; Avachat, Sayali S.; Perlman, Eric S.

    2017-02-01

    Written in Python, JetCurry models the 3D geometry of AGN jets from 2-D images. JetCurry requires NumPy and SciPy and incorporates emcee (ascl:1303.002) and AstroPy (ascl:1304.002), and optionally uses VPython. From a defined initial part of the jet that serves as a reference point, JetCurry finds the position of highest flux within a bin of data in the image matrix and fits along the x axis for the general location of the bends in the jet. A spline fitting is used to smooth out the resulted jet stream.

  16. Development of Chemical-Vapor-Deposited Diamond for Infrared Optical Applications. Status Report and Summary of Properties

    DTIC Science & Technology

    1994-07-01

    SPONSORING/MONITORING AGENCY NAMES(S) AND ADORESS(ES) 10. SPONSORINGUMONiBERING Office of Naval Research AGENCY REPORT NUMBER 800 North Quincey Street...FiURE 22. inf-ared AbWpi of aytheUon CVD) Diamond Speckren D)383-02 (0.75 num thick) (Courtesy M. E. Thomas , Applied Physics Laboratory, Larl, Md...1079 cm- 1 are laser calorimetry measurements on Type Ha diamond (Table 2). The smooth curve is from Equation 10 (Courtesy M. E. Thomas , Applied

  17. Army Logistician. Volume 40, Issue 4, July-August 2008

    DTIC Science & Technology

    2008-08-01

    structure is work- ing pretty well—but we know we didn’t get it exactly right (which we knew would be the case), and a num- ber of refinements are...with less” since the 1930s. Since transforming from the Soviet-era doctrine of heavy units with little mobil- ity to the HBCT format, the interest in...their inside knowledge of culture. They can spot a non-Iraqi instantly through little cues. At other times, this local knowledge holds them back

  18. Quantitative Sensory Testing of the Effect of Desensitizing Treatment After Dental Bleaching.

    PubMed

    Rahal, Vanessa; Gallinari, Marjorie O; Perdigão, Jorge; Cintra, Luciano T A; dos Santos, Paulo H; Briso, André L F

    2015-12-01

    The aim of this study was to quantify tooth sensitivity during bleaching and after a desensitizing treatment. Sensitivity was measured with a new device, TSA-II, which uses thermal stimuli for Quantitative Sensory Testing (QST). Ten patients underwent bleaching treatment using Whiteness HP Maxx (FGM Produtos Odontológicos Ltda) containing 35% hydrogen peroxide. After the bleaching session, the teeth were cleaned with air/water spray and the product Desensibilize KF 2% (FGM Produtos Odontológicos Ltda) was applied to the upper left teeth. Saline solution at room temperature was applied in the upper right teeth. QST was performed before bleaching, immediately after bleaching, and immediately after desensitizing treatment. In order to standardize tooth analysis, a 100% ethylene copolymer and vinyl acetate tray with circular perforations was used during measurements. Analysis of variance and the Student's t-test were used (a=0.05). Mean temperatures (SD) of cold sensation threshold for the upper right quadrant were: BB-13.898 (4.81), AB- 19.241 (3.68), AD-20.646 (3.72) and for the upper left quadrant they were: BB-14.102 (3.22), AB-19.646 (4.82), AD- 13.835 (3.63). Dental bleaching with highly concentrated peroxides changed dental cold sensation thresholds, but the topical desensitizer changed the immediate cold sensation thresholds produced by the cold stimulus.

  19. Analysis of cytokine profile and growth factors in platelet-rich plasma obtained by open systems and commercial columns.

    PubMed

    Pochini, Alberto de Castro; Antonioli, Eliane; Bucci, Daniella Zanetti; Sardinha, Luiz Roberto; Andreoli, Carlos Vicente; Ferretti, Mario; Ejnisman, Benno; Goldberg, Anna Carla; Cohen, Moisés

    2016-01-01

    To evaluate growth factors and cytokines in samples of platelet-rich plasma obtained by three different centrifugation methods. Peripheral blood of six individuals with no hematological diseases, aged 18 to 68 years, was drawn to obtain platelet-rich plasma, using the open method and commercial columns by Medtronic and Biomet. The products obtained with the different types of centrifugation were submitted to laboratory analysis, including pro-inflammatory cytokines and chemokines by flow cytometry assays, the concentration of fibroblast growth factors-2 (FGF-2) and transforming growth factor-beta1 (TGF-β1). The diverse separation methods generated systematically different profiles regarding number of platelets and leukocytes. The Medtronic system yielded a product with the highest concentration of platelets, and the open method, with the lowest concentration of platelets. The results of cytokine analysis showed that the different types of centrifugation yielded products with high concentrations of interleukin 8, interleukin 1β. The open system resulted in a product with high levels of interleukin 6. Other cytokines and chemokines measured were similar between systems. The product obtained with the open method showed higher levels of TGF-β1 in relation to other systems and low FGF-2 levels. The formed elements, growth factors and cytokines in samples of platelet-rich plasma varied according to the centrifugation technique used. Avaliar fatores de crescimento e citocinas em amostras de plasma rico em plaquetas obtidas por três diferentes métodos de centrifugação. Foi coletado sangue periférico de seis indivíduos, sem doença hematológica, com idades entre 18 e 68 anos, para obtenção de plasma rico em plaquetas, utilizando o método aberto e sistemas comerciais das empresas Medtronic e Biomet. Os produtos obtidos com os diferentes tipos de centrifugação foram submetidos às análises laboratoriais, incluindo citocinas próinflamatórias e quimiocinas

  20. La historia orbital de Deimos y la oblicuidad de Marte

    NASA Astrophysics Data System (ADS)

    Brunini, A.; Yokoyama, T.

    Recientemente, se ha demostrado mediante extensas integraciones numéricas, que la rotación de Marte pasó repetidamente por estados caóticos de movimiento, debido al pasaje por zonas de resonancia spin - órbita. En dichas circunstancias, la oblicuidad marciana pudo haber sufrido grandes excursiones de varias decenas de grados. Las consecuencias de dichas variaciones son de extrema importancia en el contexto de la búsqueda de manifestaciones de vida fósil en dicho planeta. El estudio de la dinámica orbital del satélite más exterior de Marte, Deimos, nos ha permitido comprobar, en el marco de las distintas teorías sobre su orígen, que la oblicuidad de Marte dificilmente pudo haber sufrido variaciones que la aparten más de 10o respecto de actual valor. Este resultado parece ser mucho más robusto que las simulaciones numéricas de Touma y Wisdom asi como las de Laskar y Robutel, lo que permite poner cotas más severas a la evolución paleoclimática de Marte.

  1. MDAnalysis: a toolkit for the analysis of molecular dynamics simulations.

    PubMed

    Michaud-Agrawal, Naveen; Denning, Elizabeth J; Woolf, Thomas B; Beckstein, Oliver

    2011-07-30

    MDAnalysis is an object-oriented library for structural and temporal analysis of molecular dynamics (MD) simulation trajectories and individual protein structures. It is written in the Python language with some performance-critical code in C. It uses the powerful NumPy package to expose trajectory data as fast and efficient NumPy arrays. It has been tested on systems of millions of particles. Many common file formats of simulation packages including CHARMM, Gromacs, Amber, and NAMD and the Protein Data Bank format can be read and written. Atoms can be selected with a syntax similar to CHARMM's powerful selection commands. MDAnalysis enables both novice and experienced programmers to rapidly write their own analytical tools and access data stored in trajectories in an easily accessible manner that facilitates interactive explorative analysis. MDAnalysis has been tested on and works for most Unix-based platforms such as Linux and Mac OS X. It is freely available under the GNU General Public License from http://mdanalysis.googlecode.com. Copyright © 2011 Wiley Periodicals, Inc.

  2. Optimal Rate Allocation in Cluster-Tree WSNs

    PubMed Central

    Morell, Antoni; Vicario, Jose Lopez; Vilajosana, Xavier; Vilajosana, Ignasi; Seco-Granados, Gonzalo

    2011-01-01

    In this paper, we propose a solution to the problem of guaranteed time slot allocation in cluster-tree WSNs. Our design uses the so-called Network Utility Maximization (NUM) approach as far as we aim to provide a fair distribution of the available resources. From the point of view of implementation, we extend here the authors’ proposed Coupled-Decompositions Method (CDM) in order to compute the NUM problem inside the cluster tree topology and we prove the optimality of this new extended version of the method. As a result, we obtain a distributed solution that reduces the total amount of signalling information in the network up to a factor of 500 with respect to the classical techniques, that is, primal and dual decomposition. This is possible because the CDM finds the optimal solution with a small number of iterations. Furthermore, when we compare our solution to the standard-proposed First Come First Serve (FCFS) policy, we realize that FCFS becomes pretty unfair as the traffic load in the network increases and thus, a fair allocation of resources can be considered whenever the price to pay in terms of signalling and computational complexity is controlled. PMID:22163812

  3. Applying different inversion techniques to retrieve stand variables of summer barley with PROSPECT + SAIL

    NASA Astrophysics Data System (ADS)

    Vohland, M.; Mader, S.; Dorigo, W.

    2010-04-01

    This study describes the retrieval of state variables (LAI, canopy chlorophyll, water and dry matter contents) for summer barley from airborne HyMap data by means of a canopy reflectance model (PROSPECT + SAIL). Three different inversion techniques were applied to explore the impact of the employed method on estimation accuracies: numerical optimization (downhill simplex method), a look-up table (LUT) and an artificial neural network (ANN) approach. By numerical optimization (Num Opt), reliable estimates were obtained for LAI and canopy chlorophyll contents (LAI × Cab) with r2 of 0.85 and 0.94 and RDP values of 1.81 and 2.65, respectively. Accuracies dropped for canopy water (LAI × Cw) and dry matter contents (LAI × Cm). Nevertheless, the range of leaf water contents ( Cw) was very narrow in the studied plant material. Prediction accuracies generally decreased in the order Num Opt > LUT > ANN. This decrease in accuracy mainly resulted from an increase in offset in the obtained values, as the retrievals from the different approaches were highly correlated. The same decreasing order in accuracy was found for the difference between the measured spectra and those reconstructed from the retrieved variable values. The parallel application of the different inversion techniques to one collective data set was helpful to identify modelling uncertainties, as shortcomings of the retrieval algorithms themselves could be separated from uncertainties in model structure and parameterisation schemes.

  4. Streptococcus orisasini sp. nov. and Streptococcus dentasini sp. nov., isolated from the oral cavity of donkeys.

    PubMed

    Takada, Kazuko; Saito, Masanori; Tsudukibashi, Osamu; Hiroi, Takachika; Hirasawa, Masatomo

    2013-08-01

    Four Gram-positive, catalase-negative, coccoid isolates that were obtained from donkey oral cavities formed two distinct clonal groups when characterized by phenotypic and phylogenetic studies. From the results of biochemical tests, the organisms were tentatively identified as a streptococcal species. Comparative 16S rRNA gene sequencing studies confirmed the organisms to be members of the genus Streptococcus. Two of the isolates were related most closely to Streptococcus ursoris with 95.6 % similarity based on the 16S rRNA gene and to Streptococcus ratti with 92.0 % similarity based on the 60 kDa heat-shock protein gene (groEL). The other two isolates, however, were related to Streptococcus criceti with 95.0 and 89.0 % similarities based on the 16S rRNA and groEL genes, respectively. From both phylogenetic and phenotypic evidence, the four isolates formed two distinct clonal groups and are suggested to represent novel species of the genus Streptococcus. The names proposed for these organisms are Streptococcus orisasini sp. nov. (type strain NUM 1801(T) = JCM 17942(T) = DSM 25193(T)) and Streptococcus dentasini sp. nov. (type strain NUM 1808(T) = JCM 17943(T) = DSM 25137(T)).

  5. Streptococcus oriloxodontae sp. nov., isolated from the oral cavities of elephants.

    PubMed

    Shinozaki-Kuwahara, Noriko; Saito, Masanori; Hirasawa, Masatomo; Takada, Kazuko

    2014-11-01

    Two strains were isolated from oral cavity samples of healthy elephants. The isolates were Gram-positive, catalase-negative, coccus-shaped organisms that were tentatively identified as a streptococcal species based on the results of biochemical tests. Comparative 16S rRNA gene sequence analysis suggested classification of these organisms in the genus Streptococcus with Streptococcus criceti ATCC 19642(T) and Streptococcus orisuis NUM 1001(T) as their closest phylogenetic neighbours with 98.2 and 96.9% gene sequence similarity, respectively. When multi-locus sequence analysis using four housekeeping genes, groEL, rpoB, gyrB and sodA, was carried out, similarity of concatenated sequences of the four housekeeping genes from the new isolates and Streptococcus mutans was 89.7%. DNA-DNA hybridization experiments suggested that the new isolates were distinct from S. criceti and other species of the genus Streptococcus. On the basis of genotypic and phenotypic differences, it is proposed that the novel isolates are classified in the genus Streptococcus as representatives of Streptococcus oriloxodontae sp. nov. The type strain of S. oriloxodontae is NUM 2101(T) ( =JCM 19285(T) =DSM 27377(T)).

  6. Difusión de Arnold en un modelo simple

    NASA Astrophysics Data System (ADS)

    Cincotta, P. M.; Nuñez, J. A.; Miloni, O.

    Investigadores como Merritt, Valluri, Pfenniger o Contopoulos (por citar los más relevantes) consideran seriamente la hipótesis que la difusión de Arnold juega un rol importante en la evolución dinámica de los sistemas estelares y planetarios. Sin embargo no existe ninguna evidencia. El mayor problema para investigar fenómenos como éste es que uno debe estudiar numéricamente sistemas multidimensionales (más de dos grados de libertad) y visualizar de alguna manera el espacio de fases (más de cuatro dimensiones). Más complicado aún es el caso de difusión de Arnold, donde deben considerarse tiempos de movimiento extremadamente largos y tratar con parámetros exponencialmente pequeños. El propósito de este trabajo es estudiar, en un modelo simple 3D, la existencia o no de difusión de Arnold mediante experimentos numéricos y estimaciones analíticas. Siguiendo los trabajos de Cincotta (2000) y Cincotta, Nuñez y Simo (2000), aquí se pretende ``visualizar" la difusión y, a la vez, determinar la escala de tiempo en la que ésta se podría manifestar. Este trabajo es el escalón inicial para luego abordar este problema en modelos.

  7. ObsPy: a bridge for seismology into the scientific Python ecosystem

    NASA Astrophysics Data System (ADS)

    Krischer, Lion; Megies, Tobias; Barsch, Robert; Beyreuther, Moritz; Lecocq, Thomas; Caudron, Corentin; Wassermann, Joachim

    2015-01-01

    The Python libraries NumPy and SciPy are extremely powerful tools for numerical processing and analysis well suited to a large variety of applications. We developed ObsPy (http://obspy.org), a Python library for seismology intended to facilitate the development of seismological software packages and workflows, to utilize these abilities and provide a bridge for seismology into the larger scientific Python ecosystem. Scientists in many domains who wish to convert their existing tools and applications to take advantage of a platform like the one Python provides are confronted with several hurdles such as special file formats, unknown terminology, and no suitable replacement for a non-trivial piece of software. We present an approach to implement a domain-specific time series library on top of the scientific NumPy stack. In so doing, we show a realization of an abstract internal representation of time series data permitting I/O support for a diverse collection of file formats. Then we detail the integration and repurposing of well established legacy codes, enabling them to be used in modern workflows composed in Python. Finally we present a case study on how to integrate research code into ObsPy, opening it to the broader community. While the implementations presented in this work are specific to seismology, many of the described concepts and abstractions are directly applicable to other sciences, especially to those with an emphasis on time series analysis.

  8. Adapted G-mode Clustering Method applied to Asteroid Taxonomy

    NASA Astrophysics Data System (ADS)

    Hasselmann, Pedro H.; Carvano, Jorge M.; Lazzaro, D.

    2013-11-01

    The original G-mode was a clustering method developed by A. I. Gavrishin in the late 60's for geochemical classification of rocks, but was also applied to asteroid photometry, cosmic rays, lunar sample and planetary science spectroscopy data. In this work, we used an adapted version to classify the asteroid photometry from SDSS Moving Objects Catalog. The method works by identifying normal distributions in a multidimensional space of variables. The identification starts by locating a set of points with smallest mutual distance in the sample, which is a problem when data is not planar. Here we present a modified version of the G-mode algorithm, which was previously written in FORTRAN 77, in Python 2.7 and using NumPy, SciPy and Matplotlib packages. The NumPy was used for array and matrix manipulation and Matplotlib for plot control. The Scipy had a import role in speeding up G-mode, Scipy.spatial.distance.mahalanobis was chosen as distance estimator and Numpy.histogramdd was applied to find the initial seeds from which clusters are going to evolve. Scipy was also used to quickly produce dendrograms showing the distances among clusters. Finally, results for Asteroids Taxonomy and tests for different sample sizes and implementations are presented.

  9. The perception of Cantonese lexical tones by early-deafened cochlear implantees

    NASA Astrophysics Data System (ADS)

    Ciocca, Valter; Francis, Alexander L.; Aisha, Rani; Wong, Lena

    2002-05-01

    This study investigated whether cochlear implant users can identify Cantonese lexical tones, which differ primarily in their F0 pattern. Seventeen early-deafened deaf children (age=4 years, 6 months to 8 years, 11 months; postoperative period=11-41 months) took part in the study. Sixteen children were fitted with the Nucleus 24 cochlear implant system; one child was fitted with a Nucleus 22 implant. Participants completed a 2AFC picture identification task in which they identified one of the six contrastive Cantonese tones produced on the monosyllabic target word /ji/. Each target stimulus represented a concrete object and was presented within a carrier phrase in sentence-medial position. Group performance was significantly above chance for three contrasts. However, the cochlear implant listeners performed much worse than a 6<num>1num>2-year-old, moderately hearing impaired control listener who was tested on the same task. These findings suggest that this group of cochlear implant users had great difficulty in extracting the pitch information needed to accurately identify Cantonese lexical tones.

  10. Evaluation of sound fields in a concert hall involving scattered reflections applying the subjective preference theory

    NASA Astrophysics Data System (ADS)

    Suzumura, Yukio

    2003-08-01

    Convex tilted rear walls in a stage enclosure, an array of circular columns installed in front of walls, and triangular reflectors above the stage were newly adopted as scattering obstacles in an acoustic design of Tsuyama Music Cultural Hall, called ``Bell Fole‸t Tsuyama.'' The fundamental shape of the hall was designed using the theory of subjective preference. To calculate the effects of scattered reflections on a sound field in a real concert hall is extremely laborious. For this reason, the evaluation of effects of scattered reflections on the sound field in the hall was made experimentally by use of a <num>1num>10 acoustical scale. After construction of the hall, therefore, sound fields of the hall, which involves scattered reflections caused by the tilted convex rear, by the array of circular columns, and by the triangular reflectors, were measured using four orthogonal physical factors (LL, Δt1, Tsub, IACC) described in the theory and the acoustical character of these scattering obstacles was clarified. Results clearly showed that these new attempts on scattered reflections substantially improved the quality of the sound field in the hall. Thesis advisor: Yoichi Ando Copies of this thesis written in English can be obtained from Yukio Suzumura. E-mail address: ysuzu11@lapis.plala.or.jp

  11. Convergence and optimization of the parallel method of simultaneous directions for the solution of elliptic problems

    NASA Astrophysics Data System (ADS)

    Galo, J. R.; Albarreal, I. I.; Calzada, M. C.; Cruz, J. L.; Fernández-Cara, E.; Marín, M.

    2008-12-01

    For the solution of elliptic problems, fractional step methods and in particular alternating directions (ADI) methods are iterative methods where fractional steps are sequential. Therefore, they only accept parallelization at low level. In [T. Lu, P. Neittaanmäki, X.C. Tai, A parallel splitting-up method for partial differential equations and its applications to Navier-Stokes equations, RAIRO Modél. Math. Anal. Numér. 26 (6) (1992) 673-708], Lu et al. proposed a method where the fractional steps can be performed in parallel. We can thus speak of parallel fractional step (PFS) methods and, in particular, simultaneous directions (SDI) methods. In this paper, we perform a detailed analysis of the convergence and optimization of PFS and SDI methods, complementing what was done in [T. Lu, P. Neittaanmäki, X.C. Tai, A parallel splitting-up method for partial differential equations and its applications to Navier-Stokes equations, RAIRO Modél. Math. Anal. Numér. 26 (6) (1992) 673-708]. We describe the behavior of the method and we specify the good choice of the parameters. We also study the efficiency of the parallelization. Some 2D, 3D and high-dimensional tests confirm our results.

  12. Auditory target detection in reverberation

    NASA Astrophysics Data System (ADS)

    Zurek, Patrick M.; Freyman, Richard L.; Balakrishnan, Uma

    2004-04-01

    Measurements and theoretical predictions of auditory target detection in simulated reverberant conditions are reported. The target signals were pulsed <num>1num>3-octave bands of noise and the masker signal was a continuous wideband noise. Target and masker signals were passed through a software simulation of a reverberant room with a rigid sphere modeling a listener's head. The location of the target was fixed while the location of the masker was varied in the simulated room. Degree of reverberation was controlled by varying the uniform acoustic absorption of the simulated room's surfaces. The resulting target and masker signals were presented to the listeners over headphones in monaural-left, monaural-right, or binaural listening modes. Changes in detection performance in the monaural listening modes were largely predictable from the changes in target-to-masker ratio in the target band, but with a few dB of extra masking in reverberation. Binaural detection performance was generally well predicted by applying Durlach's [in Foundations of Modern Auditory Theory (Academic, New York, 1972)] equalization-cancellation theory to the direct-plus-reverberant ear signals. Predictions in all cases were based on a statistical description of room acoustics and on acoustic diffraction by a sphere. The success of these detection models in the present well-controlled reverberant conditions suggests that they can be used to incorporate listening mode and source location as factors in speech-intelligibility predictions.

  13. Audiogram of a striped dolphin (Stenella coeruleoalba)

    NASA Astrophysics Data System (ADS)

    Kastelein, Ronald A.; Hagedoorn, Monique; Au, Whitlow W. L.; de Haan, Dick

    2003-02-01

    The underwater hearing sensitivity of a striped dolphin was measured in a pool using standard psycho-acoustic techniques. The go/no-go response paradigm and up-down staircase psychometric method were used. Auditory sensitivity was measured by using 12 narrow-band frequency-modulated signals having center frequencies between 0.5 and 160 kHz. The 50% detection threshold was determined for each frequency. The resulting audiogram for this animal was U-shaped, with hearing capabilities from 0.5 to 160 kHz (8 <num>1num>3 oct). Maximum sensitivity (42 dB re 1 μPa) occurred at 64 kHz. The range of most sensitive hearing (defined as the frequency range with sensitivities within 10 dB of maximum sensitivity) was from 29 to 123 kHz (approximately 2 oct). The animal's hearing became less sensitive below 32 kHz and above 120 kHz. Sensitivity decreased by about 8 dB per octave below 1 kHz and fell sharply at a rate of about 390 dB per octave above 140 kHz.

  14. ASME Nuclear Crane Standards for Enhanced Crane Safety and Increased Profit

    NASA Astrophysics Data System (ADS)

    Parkhurst, Stephen N.

    2000-01-01

    The ASME NOG-1 standard, 'Rules for Construction of Overhead and Gantry Cranes', covers top running cranes for nuclear facilities; with the ASME NUM-1 standard, 'Rules for Construction of Cranes, Monorails, and Hoists', covering the single girder, underhung, wall and jib cranes, as well as the monorails and hoists. These two ASME nuclear crane standards provide criteria for designing, inspecting and testing overhead handling equipment with enhanced safety to meet the 'defense-in-depth' approach of the United States Nuclear Regulatory Commission (USNRC) documents NUREG 0554 and NUREG 0612. In addition to providing designs for enhanced safety, the ASME nuclear crane standards provide a basis for purchasing overhead handling equipment with standard safety features, based upon accepted engineering principles, and including performance and environmental parameters specific to nuclear facilities. The ASME NOG-1 and ASME NUM-1 standards not only provide enhanced safety for handling a critical load, but also increase profit by minimizing the possibility of load drops, by reducing cumbersome operating restrictions, and by providing the foundation for a sound licensing position. The ASME nuclear crane standards can also increase profit by providing the designs and information to help ensure that the right standard equipment is purchased. Additionally, the ASME nuclear crane standards can increase profit by providing designs and information to help address current issues, such as the qualification of nuclear plant cranes for making 'planned engineered lifts' for steam generator replacement and decommissioning.

  15. Distributed Optimal Power and Rate Control in Wireless Sensor Networks

    PubMed Central

    Tang, Meiqin; Bai, Jianyong; Li, Jing; Xin, Yalin

    2014-01-01

    With the rapid development of wireless sensor networks, reducing energy consumption is becoming one of the important factors to extend node lifetime, and it is necessary to adjust the launching power of each node because of the limited energy available to the sensor nodes in the networks. This paper proposes a power and rate control model based on the network utility maximization (NUM) framework, where a weighting factor is used to reflect the influence degree of the sending power and transmission rate to the utility function. In real networks, nodes interfere with each other in the procedure of transmitting signal, which may lead to signal transmission failure and may negatively have impacts on networks throughput. Using dual decomposition techniques, the NUM problem is decomposed into two distributed subproblems, and then the conjugate gradient method is applied to solve the optimization problem with the calculation of the Hessian matrix and its inverse in order to guarantee fast convergence of the algorithm. The convergence proof is also provided in this paper. Numerical examples show that the proposed solution achieves significant throughput compared with exiting approaches. PMID:24895654

  16. Simulaciones hidrodinámicas de flujos complejos

    NASA Astrophysics Data System (ADS)

    María Ibáñez Cabanell, José

    Son muchos los escenarios astrofísicos en que los procesos hidrodinámicos juegan un papel clave. En la complejidad que encierra la descripción de dichos procesos destaca el de la correcta simulación de flujos complejos donde la presencia de ondas de choque fuertes que, eventualmente, interaccionan entre ellas o también la presencia de inestabilidades (Kelvin-Helmholtz, Rayleigh-Taylor, etc.) suponen un verdadero desafío numérico. Los códigos hidrodinámicos basados en la solución de un problema de valores iniciales discontinuo (problema de Riemann) son, en la actualidad, los más robustos en el campo de la dinámica de fluidos computacional. En esta charla se dará un resumen de los fundamentos de dichas técnicas numéricas (esquemas de alta resolución de captura de choques) y se ilustrará su potencialidad mostrando una amplia gama de resultados en diferentes aplicaciones astrofísicas.

  17. Equivalent Thermal Conductivities for Twisted Flat Windings

    NASA Astrophysics Data System (ADS)

    Glises, R.; Bernard, R.; Chamagne, D.; Kauffmann, J. M.

    1996-10-01

    The authors of this paper intend to develop a method of determination of equivalent thermal conductivities for twisted flat windings. The conductivities determined are radial and parallel to the principal directions of the windings. A design has been realized thanks to the thermal modulus of the computation software Flux2D using a finite elements method. Following that phase, numerical correlations permitting to express the radial conductivities as a function of temperature, filling rate and insulation conductivities are proposed. Les auteurs de cet article se proposent de développer une étude de détermination de conductivités thermiques équivalentes d'empilements de bobinages plats torsadés. Les conductivités sont déterminées dans le plan radial (perpendiculaire à l'axe des bobinages) et parallèlement aux directions principales de la structure. La méthode utilisée est exclusivement numérique et est réalisée à l'aide du logiciel de calculs bidimensionnels par éléments finis Flux2D. Des corrélations numériques exploitables permettent d'obtenir directement les conductivités radiales en fonction du taux de remplissage, de la température du milieu et des conductivités des isolants électriques.

  18. Distributed optimal power and rate control in wireless sensor networks.

    PubMed

    Tang, Meiqin; Bai, Jianyong; Li, Jing; Xin, Yalin

    2014-01-01

    With the rapid development of wireless sensor networks, reducing energy consumption is becoming one of the important factors to extend node lifetime, and it is necessary to adjust the launching power of each node because of the limited energy available to the sensor nodes in the networks. This paper proposes a power and rate control model based on the network utility maximization (NUM) framework, where a weighting factor is used to reflect the influence degree of the sending power and transmission rate to the utility function. In real networks, nodes interfere with each other in the procedure of transmitting signal, which may lead to signal transmission failure and may negatively have impacts on networks throughput. Using dual decomposition techniques, the NUM problem is decomposed into two distributed subproblems, and then the conjugate gradient method is applied to solve the optimization problem with the calculation of the Hessian matrix and its inverse in order to guarantee fast convergence of the algorithm. The convergence proof is also provided in this paper. Numerical examples show that the proposed solution achieves significant throughput compared with exiting approaches.

  19. Modélisation des profils de raie dans les plasmas : PPP nouvelle version

    NASA Astrophysics Data System (ADS)

    Calisti, A.; Ferri, S.; Mossé, C.

    2006-12-01

    Le code de calcul de profils de raie PPP a été développé à l'origine avec l'objectif de synthétiser les raies spectrales émises par les plasmas et ce pour n'importe quel émetteur et n'importe quelles conditions de plasmas. Les motivations de ce travail ont été d'une part le diagnostic et d'autre part les études de la dynamique non linéaire des charges dans les plasmas. Le code numérique basé sur des modèles originaux met en jeu des algorithmes qui réalisent le meilleur compromis entre précision et rapidité. En particulier, le mouvement des charges perturbatrices est pris en compte par le Modèle de Fluctuation de Fréquences qui transforme le profil statique en profil dynamique. Ce code a été sans cesse amélioré au cours des dix dernières années avec l'aide d'une technique de simulation numérique basée sur la méthode de dynamique moléculaire qui fournit des profils dits de référence.

  20. Visual analogue thermometer: a valid and useful instrument for measuring pain in burned patients.

    PubMed

    Choinière, M; Auger, F A; Latarjet, J

    1994-06-01

    This study assessed the psychometric qualities of a new pain rating instrument--the visual analogue thermometer (VAT)--which was developed to measure pain in burned patients. The validity and utility of the VAT was assessed and compared with a conventional numeric (NUM) and adjective pain scale (ADJ) with a group of 103 burned patients and 51 nurses. Analyses of the results support the concurrent and construct validity of the VAT as a pain measure. Furthermore, the VAT gave more sensitive and precise pain measures than the ADJ and/or NUM scales. No major difference between the three scales emerged in the patients' preference. The same was true for the nurses' evaluation except for those who had more clinical experience with the VAT and who tended to prefer this scale for its accuracy and ease of utilization. The VAT appears to be a valid, sensitive and clinically useful tool to measure pain in burned patients. A systematic pain assessment procedure which can be easily implemented in burn care facilities is presented.

  1. Modelo de galaxia disco

    NASA Astrophysics Data System (ADS)

    Ledesma, M.; Mosconi, M.

    El objetivo de este trabajo es estudiar la formación de galaxias anillo, a través de simulaciones numéricas. En el estudio numérico es necesario construir el modelo de una galaxia disco normal, en condición de equilibrio estable, que se ajuste a los parámetros observacionales disponibles de estos objetos. En dicho modelo se considera la galaxia constituída por un halo de materia oscura, un bulge y el disco propiamente dicho. A partir de perfiles de densidad obtenidos de las observaciones, se lleva a cabo la distribución espacial de las partículas, a través del ``Método del rechazo". La asignación de velocidades se realiza considerando que las partículas del disco están aproximadamente en equilibrio rotacional, y se agregan dispersiones de velocidad de acuerdo con el parámetro de Toomre Q=1.5.

  2. Written Materials for the IYA

    NASA Astrophysics Data System (ADS)

    Fierro Gossman, Julieta

    2008-05-01

    In the poster presentation I shall describe the written materials we have edited for the IYA. The first is a book written for general public about Galileo's life and research. The rest are a series of articles for teachers so that they include hands-on astronomy activities in their classroom including a star party. All these materials are written in Spanish, that is a language spoken is large areas of the world. I believe science is better understood in the mother tong so that many of these materials will be also useful for countries where Spanish is a second language. References Hector Dominguez y Julieta Fierro Galileo y el telescopio, 400 anios de ciencia Uribe y Ferrari Editores, 2007 ISBN 970 756 238-2 Hector Dominguez y Julieta Fierro Newton, la luz y el movimiento de los cuerpos Uribe y Ferrari Editores, 2007 ISBN 970 756 238 2 Hector Dominguez y Julieta Fierro, Galileo para Maestros I Correo del Maestro, Núm. 133, p. 15-26, Anio 12, Junio 2007. Hector Dominguez y Julieta Fierro, Galileo para Maestros II Correo del Maestro, Num. 134, p. 17-26, Anio 12, 2007. Hector Dominguez y Julieta Fierro, Galileo para Maestros III Correo del Maestro, Num. 135, p. 10-18, Anio 12, 2007. Hector Dominguez y Julieta Fierro Experimentos sobre la caida de los cuerpos El Correo del Maestro, anio 12 Numero 142, p. 5-18, 2008.

  3. Condiciones Físicas en Nebulosas Gaseosas

    NASA Astrophysics Data System (ADS)

    Luridiana, V.

    1999-03-01

    El presente trabajo se ha enfocado a determinar y entender las condiciones físicas en una variedad de objetos nebulares, prestando particular atención al problema de la determinación de las abundancias químicas. Para este fin, hemos utilizado métodos analíticos en algunos casos, y modelos numéricos de fotoionización en otros. El objetivo general del trabajo es proveer de una visión amplia de las herramientas teórico-observacionales que se utilizan para la determinación de la estructura de temperatura y densidad de las regiones fotoionizadas, poniendo en evidencia posibles fuentes de errores sistemáticos y sus consecuencias para la determinación de las abundancias químicas, y proponiendo métodos para corregirlos. Los resultados principales de este trabajo est´n listados a continuación: a) Se discute el problema de la discrepancia entre T(C III) y T(O III) en las nebulosas planetarias, y se muestra como tal discrepancia implica probablemente la presencia de fluctuaciones de temperatura. Debido a que la temperatura de O++ es muy afectada por fluctuaciones de temperatura, se recomienda usar la temperatura de C++ para determinar la abundancia de carbono. b) Presentamos dos nuevos métodos para determinar la temperatura electrónica en nebulosas planetarias, basados en la medición de las intensidades de las líneas de He I. Las temperaturas que se obtienen a partir de estos métodos son menores que aquellas que se obtienen a partir de las líneas de [O III], implicando la presencia de fluctuaciones espaciales de temperatura. Despreciando las fluctuaciones de temperatura, se obtienen valores sesgados de las abundancias químicas. Determinamos las abundancias en las nebulosas planetarias de tipo I de algunos de los elementos más importantes, tomando en cuenta las fluctuaciones de temperatura. c) Presentamos modelos numéricos de las dos regiones H II extragalácticas gigantes NGC 2363 y NGC 5461. Con el modelaje numérico, pretendemos acotar las car

  4. Cohort profile update: The 1993 Pelotas (Brazil) birth cohort follow-up visits in adolescence.

    PubMed

    Gonçalves, Helen; Assunção, Maria Cf; Wehrmeister, Fernando C; Oliveira, Isabel O; Barros, Fernando C; Victora, Cesar G; Hallal, Pedro C; Menezes, Ana Mb

    2014-08-01

    In this paper we update the profile of the 1993 Pelotas (Brazil) Birth Cohort Study, with emphasis on a shift of priority from maternal and child health research topics to four main categories of outcome variables, collected throughout adolescence: (i) mental health; (ii) body composition; (iii) risk factors for non-communicable diseases (NCDs); (iv) human capital. We were able to trace 81.3% (n = 4106) of the original cohort at 18 years of age. For the first time, the 18-years visit took place entirely on the university premises, in a clinic equipped with state-of-the-art equipment for the assessment of body composition. We welcome requests for data analyses from outside scientists. For more information, refer to our website (http://www.epidemio-ufpel.org.projetos_de_pesquisas/estudos/coorte_1993) or e-mail the corresponding author. © The Author 2014. Published by Oxford University Press on behalf of the International Epidemiological Association.

  5. [Programa de saúde: a case of book censorship during the Brazilian military dictatorship].

    PubMed

    Reimão, Sandra

    2013-11-30

    Some documents produced by the government during the Brazilian military dictatorship have been made available for reference, including censors' reports on television and radio programs, plays, films, songs, advertisements and printed matter. Of the 500 or so reports on books, there is one that vetoes Programa de saúde: projetos e temas de higiene e saúde, an educational work that proposed actions to help students understand their sanitary conditions and acquire knowledge about health and health-promoting habits in this area. The argument for vetoing it was that the information could fall into the hands of poorly trained teachers, who could distort its content, causing serious damage to Brazilian youth. In this report we see evidence of the obscurantist, elitist posture adopted by the Department of Censorship of Public Entertainment, which aimed to restrict the circulation of information and curb debate.

  6. Chebyshev acceleration for lambda mode calculations

    SciTech Connect

    Belchior, A. Jr.; Moreira, J.M.L. )

    1992-01-01

    Coordenadoria para Projetos Especals (COPESP) has been making an effort to develop a power distribution mapping system utilizing self-powered neutron detectors. The scheme adopted to estimate the power distribution is based on an expansion of lambda modes for a given reactor state. Two-dimensional lambda modes were obtained previously with a modified version of the CITATION code. The method was based on the orthogonality properties of the lambda modes. Several modes could be obtained, but the convergence was slow because of the lack of an appropriate accelerating scheme in the CITATION code for calculating lambda modes. This work presents the acceleration scheme implemented into the CITATION code to obtain lambda modes.

  7. ASSESSMENT FORM - NEW IMPROVEMENT OF ACTIONS: CONCENTRATION AND RESEARCH AREAS / CURRICULUM STRUCTURE / FUNDRAISING.

    PubMed

    Calderon, Iracema Mp

    2015-01-01

    This review aims to develop a critical and current analysis of the basic structure of a Postgraduate program for proposing improvement actions and new evaluation criteria. To examine the items that are areas of concentration (AC), research lines (LP), research projects (PP), curricular structure and fundraising were consulted the Area Document, the 2013 Evaluation Report and the Assessment Sheets of Medicine III programs, evaluated in the 2010-2012 period. Consistency is recommended especially among AC, LP and PP, with genuine link between activities and permanent teachers skills and based on structured curriculum in the education of the student. The Program Proposal interfere, and much, in qualifying a program. The curriculum should provide subsidy to the formation of the researcher, through the core subjects, and development of PP, being the concept of disciplines to support lines and research projects. Fundraise should be set out in research projects and in the CV-Lattes. The area recommended that at least 40-50% of permanent teachers present fundraising and the minimum 20-25% of these teachers to have productivity scholarship PQ / CNPq during the triennium. It is necessary to promote wide discussion and find a consensus denominator for these issues. The actions should contribute to the improvement of evaluation forms and certainly for the qualification of the programs but graduate. Essa revisão tem como objetivo elaborar uma análise crítica e atual da estrutura básica de um programa de Pós-Graduação para a proposição de ações de aperfeiçoamento e novos critérios de avaliação. Para analisarem-se os itens áreas de concentração (AC), linhas de pesquisa (LP), projetos de pesquisa (PP), estrutura curricular e captação de recursos/fomentos foram consultados o documento de área, o relatório de avaliação 2013 e as fichas de avaliação dos programas da Medicina III, avaliados no triênio 2010-2012. A coerência é recomendada especialmente entre

  8. Mapping of land use and geomorphology in the APAPORE project area by LANDSAT satellite data, volume 1

    NASA Technical Reports Server (NTRS)

    Parada, N. D. J. (Principal Investigator); Dossantos, A. P.; Kux, H. J.; Sausen, T. M.; Bueno, A. M. T. R.; Desouza, L. F.; Nunes, J. S. D.

    1982-01-01

    The results of a land use and geomorphological mapping of the so-called Projeto APAPORE area, at Mato Grosso do Sul State are presented. The study was carried out using multispectral scanner (MSS) and return beam vidicon LANDSAT images (channels 5 and 7 for the MSS) at the scale of 1:250,000 from 1980 through visual interpretation. The results indicate that pastureland is the most widespead class and that the agricultural areas re concentrated in the north of the area under study. The area covered with cerradao (arboreous savanna type) has a great areal extention, thus permitting the advance of the agricultural frontier. The geomorphological mapping can be useful to regional planning of future land use within the studied area.

  9. Contaminant concentrations, biochemical and hematological biomarkers in blood of West Indian manatees Trichechus manatus from Brazil.

    PubMed

    Anzolin, D G; Sarkis, J E S; Diaz, E; Soares, D G; Serrano, I L; Borges, J C G; Souto, A S; Taniguchi, S; Montone, R C; Bainy, A C D; Carvalho, P S M

    2012-07-01

    The West Indian manatee Trichechus manatus is threatened with extinction in Brazil, and this study focused on nondestructive blood samples analyzed for metals, polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs), as well as biochemical and hematological biomarkers. Studied manatees were kept at Projeto Peixe-Boi headquarters in Pernambuco State, and at two natural areas in estuaries where they are released to the wild. Manatees kept at the natural estuary in Paraiba State have blood concentrations of Al, Pb, Cd, Sn that are 11, 7, 8 and 23 times greater, respectively, than the concentrations found in blood of animals from the same species in Florida, USA. An inhibition of butyrylcholinesterase in manatees kept at the two reintroduction sites in Alagoas and Paraiba States indicated possible exposure of the animals to cholinesterase inhibitor insecticides. PCBs and OCPs were not detected. Results from this study will help delineate conservation efforts in the region.

  10. [Public health and chemical-pharmaceutical companies].

    PubMed

    Ribeiro, M A

    This article is concerned with the establishment of the Brazilian pharmaceutical industry. It addresses some issues of relevance to social-economic history, such as the emergence of the public health system, procedures for combating infectious disease, the relations between disinfection campaigns and the chemical industry, serotherapy and the production of serums and vaccines by public research institutions and private pharmaceutical companies. Focusing on the private pharmaceutical industry in Brazil, with special reference to the Instituto Pinheiros - Produtos Terapêuticos S.A., this article highlights the relations between scientists technology and product development. It also considers the debate which involved the scientific community and some governmental research institutions for public health policy development in the state of São Paulo.

  11. Molluscicidal activity of Physalis angulata L. extracts and fractions on Biomphalaria tenagophila (d'Orbigny, 1835) under laboratory conditions.

    PubMed

    dos Santos, José Augusto A; Tomassini, Therezinha Coelho B; Xavier, Deise Cristina Drummond; Ribeiro, Ivone Maria; da Silva, Melissa Teixeira G; de Morais Filho, Zenildo Buarque

    2003-04-01

    The main objective of this research is to evaluate the molluscicide activity of Physalis angulata L. Biomphalaria tenagophila specimens under laboratory conditions. Extracts and fractions were supplied by the Laborat rio de Qu mica de Produtos Naturais, Farmanguinhos-Fiocruz. Experiments were performed according to the methodology described by the World Health Organization for molluscicide tests using the concentrations from 0.1 to 500 mg/l of the extracts, fractions and of a pool of physalins modified steroids present in this species. The results show that ethyl acetate and acetone extracts from the whole plant, the ethanolic extracts of the roots and the physalins pool from stems and leaves were active. Only the whole plant extracts were available in sufficient quantity for the determination of LD50 and LD90 values.

  12. A constitutive-relationship model for film flow on rough fracture surfaces

    NASA Astrophysics Data System (ADS)

    Liu, H. H.

    Film flow on fracture surfaces may be an important mechanism for fast flow in unsaturated fractured rocks. Incorporating this mechanism into a numerical model requires knowledge of constitutive relationships for film flow. Based on fractal concepts and a conceptual argument of Tokunaga et al. that water films could be treated as analogues to water in unsaturated porous media, a simple constitutive-relationship model has been developed. The validity of the model is supported by excellent agreements between calculation results and experimental observations for two different fracture surfaces. L'écoulement en film sur les surfaces de fracture peut être un mécanisme important pour l'écoulement rapide dans les roches fracturées non saturées. L'incorporation de ce mécanisme dans un modèle numérique nécessite la connaissance des relations fondamentales pour l'écoulement en film. Basé sur des concepts fractals et sur un argument conceptuel de Tokunaga et al. selon lequel des films d'eau peuvent être considérés comme des analogues de l'eau en milieu poreux non saturé, un modèle simple des relations fondamentales a été développé. La validité de ce modèle est confirmée grâce à une excellente concordance entre les résultats du calcul et les observations expérimentales pour deux surfaces différentes de fractures. El flujo pelicular en la superficie de las fracturas puede ser un mecanismo importante para el flujo rápido en rocas fracturadas no saturadas. Incorporarlo en un modelo numérico requiere conocer las relaciones constitutivas del flujo pelicular. Se ha desarrollado un modelo de una relación constitutiva sencilla partiendo de conceptos fractales y de un argumento conceptual de Tokunaga et al., según el cual las películas de agua pueden ser tratadas como análogos del agua en medios porosos no saturados. La validez del modelo es corroborada por los excelentes ajustes entre los resultados numéricos y las observaciones experimentales en dos

  13. Computing the Probability of RNA Hairpin and Multiloop Formation

    PubMed Central

    Ding, Yang; Lorenz, William A.; Dotu, Ivan; Senter, Evan

    2014-01-01

    Abstract We describe four novel algorithms, RNAhairpin, RNAmloopNum, RNAmloopOrder, and RNAmloopHP, which compute the Boltzmann partition function for global structural constraints—respectively for the number of hairpins, the number of multiloops, maximum order (or depth) of multiloops, and the simultaneous number of hairpins and multiloops. Given an RNA sequence of length n and a user-specified integer 0 ≤ K ≤ n, RNAhairpin (resp. RNAmloopNum and RNAmloopOrder) computes the partition functions Z(k) for each 0 ≤ k ≤ K in time O(K2n3) and space O(Kn2), while RNAmloopHP computes the partition functions Z(m, h) for 0 ≤ mm ≤ M multiloops and 0 ≤ h ≤ H hairpins, with run time O(M2H2n3) and space O(MHn2). In addition, programs such as RNAhairpin (resp. RNAmloopHP) sample from the low-energy ensemble of structures having h hairpins (resp. m multiloops and h hairpins), for given h, m. Moreover, by using the fast Fourier transform (FFT), RNAhairpin and RNAmloopNum have been improved to run in time O(n4) and space O(n2), although this improvement is not possible for RNAmloopOrder. We present two applications of the novel algorithms. First, we show that for many Rfam families of RNA, structures sampled from RNAmloopHP are more accurate than the minimum free-energy structure; for instance, sensitivity improves by almost 24% for transfer RNA, while for certain ribozyme families, there is an improvement of around 5%. Second, we show that the probabilities p(k)=Z(k)/Z of forming k hairpins (resp. multiloops) provide discriminating novel features for a support vector machine or relevance vector machine binary classifier for Rfam families of RNA. Our data suggests that multiloop order does not provide any significant discriminatory power over that of hairpin and multiloop number, and since these probabilities can be efficiently computed using the FFT, hairpin and multiloop formation probabilities could be added to other features in

  14. Le syndrome de la pince aorto-mésentérique chez l'enfant: à propos d'un cas primitive

    PubMed Central

    Fall, Mbaye; Bâ, Papa Abdoulaye; Touré, Fodé Baba; Mbaye, Pape Alassane; Ngom, Gabriel

    2014-01-01

    Le syndrome de la pince aorto-mésentérique résulte de la compression du troisième duodénum entre l'artère mésentérique supérieure et l'aorte. Elle détermine un tableau d'occlusion intestinale haute aiguë ou chronique. Nous faisons une revue de la littérature à partir d'un cas de syndrome de la pince aorto-mésentérique. Il s'agit d'un nourrisson de 16 mois suivi pour des vomissements alimentaires évoluant depuis l’âge de 03 mois et rebelles au traitement médical. Il s'agit de vomissements postprandiaux tardifs d'apparition intermittente, améliorés par la position de décubitus ventral. Le bilan radiologique composé d'une radiographie de l'abdomen sans préparation, d'un transit oeso-gastroduodénal (TOGD) et d'un angioscanner a permis d'aboutir au diagnostic d'obstruction extrinsèque et incomplète du 3ème duodénum par la pince aorto-mésentérique. Une dérivation interne par duodéno-jéjunostomie sur anse en oméga a permis de contourner l'obstacle vasculaire avec des suites simples. Le TOGD de contrôle du 9ème jour postopératoire a montré une bonne perméabilité de l'anastomose duodéno-jéjunale. Les vomissements ont disparu et on note un gain pondéral de 2 kg en 3 mois. Les vomissements chroniques chez le nourrisson sont d’étiologies variées. L'obstacle siégeant au 3ème duodénum est le plus souvent dû à une pince aorto-mésentérique. Malheureusement ce diagnostic est rarement porté surtout en Afrique probablement du fait de l'insuffisance des moyens diagnostiques en particulier dans les zones reculées. Le traitement peut être fait par les moyens chirurgicaux ou nutritionnels. PMID:25767670

  15. Finite analytic numerical solution of heat transfer and flow past a square channel cavity

    NASA Technical Reports Server (NTRS)

    Chen, C.-J.; Obasih, K.

    1982-01-01

    A numerical solution of flow and heat transfer characteristics is obtained by the finite analytic method for a two dimensional laminar channel flow over a two-dimensional square cavity. The finite analytic method utilizes the local analytic solution in a small element of the problem region to form the algebraic equation relating an interior nodal value with its surrounding nodal values. Stable and rapidly converged solutions were obtained for Reynolds numbers ranging to 1000 and Prandtl number to 10. Streamfunction, vorticity and temperature profiles are solved. Local and mean Nusselt number are given. It is found that the separation streamlines between the cavity and channel flow are concave into the cavity at low Reynolds number and convex at high Reynolds number (Re greater than 100) and for square cavity the mean Nusselt number may be approximately correlated with Peclet number as Nu(m) = 0.365 Pe exp 0.2.

  16. Radiation Scanning Methods for Ship-to-Rail Intermodal Cargo Containers

    SciTech Connect

    Reichmuth, Barbara A.; Stansbury, Paul S.; Taira, Randal Y.; Sanquist, Thomas F.; Collins, Robert

    2009-05-11

    The Department of Homeland Security’s (DHS) Domestic Nuclear Detection Office (DNDO) runs the Rail Test Center (RTC) at the Port of Tacoma (POT). The RTC affords DNDO with the opportunity to test radiological and nuclear threat detection systems associated with the unique on-dock rail environment while in an operational seaport. DNDO selected the Pacific Northwest National Laboratory (PNNL) to manage the RTC. The RTC is conducting various evaluation studies to assess scanning opportunities in terms of their affects on the num-ber of container moves required and the affect that the scanning opportunity has on the time it takes to move a container through the on-dock transfer process from ship to rail. The velocity and the number of container moves are directly associated with incremental costs to the terminal operators; increases in either of these parameters help in-form the potential for incremental costs that would result from the implementation of the opportunity.

  17. Double contrast X-ray examination of stomach.

    PubMed

    Wiljasalo, M; Wiljasalo, S; Valle, M; Tallroth, K; Korhola, O; Somer, K

    1977-01-01

    A comparison was made between three double contrast methods and the conventional method of X-ray examination of the stomach. 106 patets received ordinary barium sulphate together with effervescent granules. 119 patients were examined with a special barium sulphate preparation containing dissolved carbon dioxide (Baritop). The third group, 100 patients, received Baritop and effervescent granules, and 100 patients a conventional barium meal. The films were analyzed as to the quality of mucosal pattern demonstration, mucosal affinity of the contrast medium, and the degree of dilatation of the stomach and duo8num. In addition, the degree of interference by gas bubbles was estimated. The best results were obtained with the contrast medium containing carbon dioxide (Baritop).

  18. New version of hex-ecs, the B-spline implementation of exterior complex scaling method for solution of electron-hydrogen scattering

    NASA Astrophysics Data System (ADS)

    Benda, Jakub; Houfek, Karel

    2016-07-01

    We provide an updated version of the program hex-ecs originally presented in Comput. Phys. Commun. 185 (2014) 2903-2912. The original version used an iterative method preconditioned by the incomplete LU factorization (ILU), which-though very stable and predictable-requires a large amount of working memory. In the new version we implemented a "separated electrons" (or "Kronecker product approximation", KPA) preconditioner as suggested by Bar-On et al., Appl. Num. Math. 33 (2000) 95-104. This preconditioner has much lower memory requirements, though in return it requires more iterations to reach converged results. By careful choice between ILU and KPA preconditioners one is able to extend the computational feasibility to larger calculations. Secondly, we added the option to run the KPA preconditioner on an OpenCL device (e.g. GPU). GPUs have generally better memory access times, which speeds up particularly the sparse matrix multiplication.

  19. Evaluation of the Criterion Task Set. Part 1. Appendices A and B. Univariate Summaries

    DTIC Science & Technology

    1990-01-01

    Appendices A and B - Univariate Summaries (U) 12. PERSON~i. AUTHOR(S) Schlegel, Robert E. Ph.D. and Gilliland, Kirby Ph.D. 134, TYPE OF REPORT 1b. TIMRE...AISTRAC Cosnea eEef eEeyi fy by blok fut) " This report summarites the’dtevelopment and analysis of a comprehensive standardization data base for tho USAF...190.758 CSS 4.3908T CV 15.3807 STD MEAN 0.00853542 T:MEAN=O 1019T95 PROB>ITI 0.0001 SGN RAMiE 15190.5 PROB)ISI 0.0001 NUM 0 46 O:NORfAL 0.190657 PROO>D

  20. Variable focal lens controlled by an external voltage: An application of electrowetting

    NASA Astrophysics Data System (ADS)

    Berge, B.; Peseux, J.

    2000-10-01

    We use electrocapillarity in order to change the contact angle of a transparent drop, thus realizing a lens of variable focal length (B. Berge, J. Peseux, Patent deposited in Grenoble France, October 8th 1997, numéro d'enregistrement national 97 12781). The key point is the application of gradients of wettability, which control the shape of the drop edge, in our case a centered circle of variable radius. The quality and reversibility of the lens are surprisingly good. The optical power variation can be 5 to 10 times the one of the human eye, for a comparable diameter, with a typical response time of 0.03 s and a dissipated power of a few mW.

  1. Xarray: multi-dimensional data analysis in Python

    NASA Astrophysics Data System (ADS)

    Hoyer, Stephan; Hamman, Joe; Maussion, Fabien

    2017-04-01

    xarray (http://xarray.pydata.org) is an open source project and Python package that provides a toolkit and data structures for N-dimensional labeled arrays, which are the bread and butter of modern geoscientific data analysis. Key features of the package include label-based indexing and arithmetic, interoperability with the core scientific Python packages (e.g., pandas, NumPy, Matplotlib, Cartopy), out-of-core computation on datasets that don't fit into memory, a wide range of input/output options, and advanced multi-dimensional data manipulation tools such as group-by and resampling. In this contribution we will present the key features of the library and demonstrate its great potential for a wide range of applications, from (big-)data processing on super computers to data exploration in front of a classroom.

  2. Nonlinear Theory of The Geostrophic Adjustment

    NASA Astrophysics Data System (ADS)

    Zeitlin, V.

    Nonlinear geostrophic adjustment and splitting of the fast and slow dynamical vari- ables are analysed in the framework of multi-layer and continuously stratified prim- itive equations by means of the multi-scale perturbation theory in the Rossby num- ber applied to localized initial disturbances. Two basic dynamical regimes: the quasi- geostrophic (QG) and the frontal geostrophic (FG) with small and large deviations of the isopycnal surfaces, respectively, are considered and differences in corresponding adjustment scenarios are displayed. Decoupling of the fast component of the flow is proven up to the third order in Rossby number and long-time corrections to the stan- dard balanced QG and FG models are found. Peculiarities of splitting in the FG regime due to the quasi-inertial oscillations are displayed and a Schrodinger-like modulation equations for the envelope of these latter are derived.

  3. Predicting the Effects of Sugar-Sweetened Beverage Taxes on Food and Beverage Demand in a Large Demand System

    PubMed Central

    Zhen, Chen; Finkelstein, Eric A.; Nonnemaker, James; Karns, Shawn; Todd, Jessica E.

    2013-01-01

    A censored Exact Affine Stone Index incomplete demand system is estimated for 23 packaged foods and beverages and a numéraire good. Instrumental variables are used to control for endogenous prices. A half-cent per ounce increase in sugar-sweetened beverage prices is predicted to reduce total calories from the 23 foods and beverages but increase sodium and fat intakes as a result of product substitution. The predicted decline in calories is larger for low-income households than for high-income households, although welfare loss is also higher for low-income households. Neglecting price endogeneity or estimating a conditional demand model significantly overestimates the calorie reduction. PMID:24839299

  4. A Unified Specification of Behavior for Requirements and Design

    DTIC Science & Technology

    2007-12-10

    5.3 Set HSI pointer 1 Note: The  DME  must be set to 555 actually in !DC Tstage! to allow the servos to settle  in time for !AC1 Tstage!. TABLE 9...Setting the HSI-1 and  DME  displays except *Grtest* MODES CONDITIONS All alignment and navigation  modes with no modes listed  below; !+Fly to num+! = 0... DME  display+! 0  !! DME  integer display!! TABLE 10. Setting the HSI-1 and  DME  displays for *Grtest MODES CONDITIONS *Grtest* !+test stage+! = $AC1

  5. Metrological characterization of the ADONIS system used in gamma-ray spectrometry.

    PubMed

    Plagnard, J; Morel, J; Tuan, A Tran

    2004-01-01

    In gamma-ray spectrometry, new acquisition systems based on digital signal processing are now commercially available. In order to determine their performance at high count rates, the Commissariat à l'Energie Atomique (CEA), Laboratoire National Henri Becquerel has tested several of these systems. These tests have clearly shown that the performance levels announced by the manufacturers were generally not met. It was therefore a logical step to include the Atelier de DévelOppement Numérique pour l'Instrumentation en Spectrométrie (ADONIS) system in these tests. ADONIS is the new numerical system for gamma-ray spectrometry, developed by the CEA Service d'Instrumentation et d'Application des Rayonnements.

  6. The atomic simulation environment-a Python library for working with atoms.

    PubMed

    Hjorth Larsen, Ask; Jørgen Mortensen, Jens; Blomqvist, Jakob; Castelli, Ivano E; Christensen, Rune; Dułak, Marcin; Friis, Jesper; Groves, Michael N; Hammer, Bjørk; Hargus, Cory; Hermes, Eric D; Jennings, Paul C; Bjerre Jensen, Peter; Kermode, James; Kitchin, John R; Leonhard Kolsbjerg, Esben; Kubal, Joseph; Kaasbjerg, Kristen; Lysgaard, Steen; Bergmann Maronsson, Jón; Maxson, Tristan; Olsen, Thomas; Pastewka, Lars; Peterson, Andrew; Rostgaard, Carsten; Schiøtz, Jakob; Schütt, Ole; Strange, Mikkel; Thygesen, Kristian S; Vegge, Tejs; Vilhelmsen, Lasse; Walter, Michael; Zeng, Zhenhua; Jacobsen, Karsten W

    2017-07-12

    The atomic simulation environment (ASE) is a software package written in the Python programming language with the aim of setting up, steering, and analyzing atomistic simulations. In ASE, tasks are fully scripted in Python. The powerful syntax of Python combined with the NumPy array library make it possible to perform very complex simulation tasks. For example, a sequence of calculations may be performed with the use of a simple 'for-loop' construction. Calculations of energy, forces, stresses and other quantities are performed through interfaces to many external electronic structure codes or force fields using a uniform interface. On top of this calculator interface, ASE provides modules for performing many standard simulation tasks such as structure optimization, molecular dynamics, handling of constraints and performing nudged elastic band calculations.

  7. Dielectric properties induced by hindered molecular motion in crystals and liquids

    NASA Astrophysics Data System (ADS)

    Bashirov, F. I.

    1999-09-01

    A united theoretical description of dielectric properties of molecular solids and liquids is developed. The numbering data are tabulated and some results are pictured. The theory expands the fundamental dispersion expressions of complex dielectric permeability, initiated by Debye for molecular liquids, to any condensed molecular medium. Une approche théorique unifiant les propriétés diélectriques des cristaux moléculaires et celles des liquides est développée. Les données numériques sont disposées et les résultats principaux sont imaginés. La théorie élargie les expressions fondamentales de dispersion de la permittivité complexe du diélectrique liquide moléculaire, initié par Debye, à tout milieu condensé moléculaire.

  8. Combustión turbulenta de materia nuclear en materia extraña

    NASA Astrophysics Data System (ADS)

    Vucetich, H.

    La simulación numérica de supernovas tipo II muestra que los mecanismos físicos convencionales no son suficientes como para producir la explosión. La detonación de materia nuclear en materia extraña es un mecanismo físico capaz de proveer la energía faltante en las simulaciones. En esta comunicación se muestra que la turbulencia en el corazón compacto de una supernova, después del primer choque, es capaz de transformar una combustión lenta en una detonación. Se concluye que, si la materia extraña existe, todas las ``estrellas de neutrones'' son, en realidad, ``estrellas extrañas''.

  9. Local Existence of Weak Solutions to Kinetic Models of Granular Media

    NASA Astrophysics Data System (ADS)

    Agueh, Martial

    2016-08-01

    We prove in any dimension {d ≥q 1} a local in time existence of weak solutions to the Cauchy problem for the kinetic equation of granular media, partial_t f+v\\cdot nabla_x f = {div}_v[f(nabla W *_v f)] when the initial data are nonnegative, integrable and bounded functions with compact support in velocity, and the interaction potential {W} is a {C^2({{R}}^d)} radially symmetric convex function. Our proof is constructive and relies on a splitting argument in position and velocity, where the spatially homogeneous equation is interpreted as the gradient flow of a convex interaction energy with respect to the quadratic Wasserstein distance. Our result generalizes the local existence result obtained by Benedetto et al. (RAIRO Modél Math Anal Numér 31(5):615-641, 1997) on the one-dimensional model of this equation for a cubic power-law interaction potential.

  10. Autopsy: Traditional Jewish laws and customs "Halacha".

    PubMed

    Goodman, Norman R; Goodman, Jeffrey L; Hofman, Walter I

    2011-09-01

    Judaism has many traditions, customs, rules, and laws, which relate to the proper and ethical disposition of a decedent when a Medical Examiner/ Coroner is involved. In almost all United States jurisdictions, statutes mandate the need to determine the cause and manner of death (Coroners' Act PA Pl. 323, num. 130, section 1237). This article is a review of some religious writings, legal precedents, and forensic authorities, which may help to assist the Medical Examiner/Coroner when confronted with a Jewish decedent. There can be flexibility as to the extent that such forensic studies can and should be performed. The final consent and interpretation of the rules, laws, traditions, and customs will rest with the courts and local rabbinic authority.

  11. The Python ARM Radar Toolkit (Py-ART), a library for working with weather radar data in the Python programming language

    DOE PAGES

    Helmus, Jonathan J.; Collis, Scott M.

    2016-07-18

    The Python ARM Radar Toolkit is a package for reading, visualizing, correcting and analysing data from weather radars. Development began to meet the needs of the Atmospheric Radiation Measurement Climate Research Facility and has since expanded to provide a general-purpose framework for working with data from weather radars in the Python programming language. The toolkit is built on top of libraries in the Scientific Python ecosystem including NumPy, SciPy, and matplotlib, and makes use of Cython for interfacing with existing radar libraries written in C and to speed up computationally demanding algorithms. As a result, the source code for themore » toolkit is available on GitHub and is distributed under a BSD license.« less

  12. Development of an EEG Artifact Correction Device

    DTIC Science & Technology

    1990-04-16

    data_buffer[2] (buffnot] [i_temp])*supgau[i_temp])/256); 204 2 ximag[itemp] = 0; 205 2 205 1 205 1 fft_for(); 206 1 if ( error 1= 0) 207 2 errfl; 208 2...tune-pt = 0; 351 5 new pt = BUFF_START; 352 5 buff num z0; 353 5 buff-not = 1; 354 5) 354 4 rep count = CAL_REP; 1* reset average counter * 355 4 for...DCW 2*90, 2*346, 2*218, 2*474, 2*58, 2*314 0270 74017403F400F402 207 DCW 2*186, 2*442, 2*122, 2*378, 2*250, 2*506 027C OCOOOC020CO10CO3 208 DCW 2*6, 2

  13. Network Properties of the Ensemble of RNA Structures

    PubMed Central

    Clote, Peter; Bayegan, Amir

    2015-01-01

    We describe the first dynamic programming algorithm that computes the expected degree for the network, or graph G = (V, E) of all secondary structures of a given RNA sequence a = a1, …, an. Here, the nodes V correspond to all secondary structures of a, while an edge exists between nodes s, t if the secondary structure t can be obtained from s by adding, removing or shifting a base pair. Since secondary structure kinetics programs implement the Gillespie algorithm, which simulates a random walk on the network of secondary structures, the expected network degree may provide a better understanding of kinetics of RNA folding when allowing defect diffusion, helix zippering, and related conformation transformations. We determine the correlation between expected network degree, contact order, conformational entropy, and expected number of native contacts for a benchmarking dataset of RNAs. Source code is available at http://bioinformatics.bc.edu/clotelab/RNAexpNumNbors. PMID:26488894

  14. Preliminary Problem Definition Study of 48 Munitions Related Chemicals. Volume I. Explosives Related Chemicals

    DTIC Science & Technology

    1978-04-01

    PAGE READ INSTRUCTIONSREPORT DOCUMENTATION PAEBEFORE COMPLETING FORM I. mPORT NUM10 N OVT ACCESSION NO. 3. PRECIPILNT’S CATALOG NUMNER 5 I L ( a n S u...PIN JC ps 1 10 "𔃻 06 (F- 04. PC CA Cu CAU CA= " uI 0%- -r -H C.C r4 F- 0) F- 0 4.4 =O QO Ř It Ai O0i 4-4 4-4C 4- (A 4- (n~ U% U0 0 1U * Q di 0 04 L .4...that additional experimental studies be conducted to clarify the environmental fate of l ,3-dinitrobenzene and the effectiveness of planned treatment

  15. Induced Smectic-G Phase through Intermolecular Hydrogen Bonding Part VIII: Phase and Crystallization Behaviours of 2-(p-n-heptyloxybenzyIidene imino)-5-chIoro-pyridine: p-n-alkoxybenzoic acid (HICP:n ABA) Complexes

    NASA Astrophysics Data System (ADS)

    Srinivasulu, M.; Satyanarayana, P. V. V.; Kumar, P. A.; Pisipatia, V. G. K. M.

    2001-10-01

    New intermolecular H-bonded liquid crystalline complexes, viz., 2-(p-n-heptyloxybenzylidene imi-no)-5-chloro-pyridine:p-/z-alkoxybenzoic acid; (HICP:nABA) (where n denotes the alkoxy carbon num­ bers 3 to 10 and 12) exhibiting smectic-F (n = 12) and smectic-G phases have been synthesized and char­ acterized by Thermal Microscopy and Differential Scanning Calorimetry (DSC). Detailed IR (solid and solution states) analysis confirms the existence of intermolecular H-bonding between the pyridyl nitro­ gen and the COOH group of the p-n-alkoxybenzoic acid moiety. The phase behaviour of the series is discussed in the light of reported data on free p-n-alkoxybenzoic acids. The crystallization kinetics of a representative complex, using the DSC technique, is discussed. The mechanism of the crystal growth of the new crystalline smectic-G phase is computed with the Avrami equation.

  16. Development and Evaluation of Soldier Symbology

    DTIC Science & Technology

    2009-03-01

    RÉSUMÉ On met au point des systèmes de combattant du futur qui peuvent indiquer la position géographique d’un soldat sur un écran numérique portable...sauf qu’une symbologie commune de l’OTAN n’existe pas pour l’affichage de ces soldats sur une carte. Le 1er Groupe de l’OTAN sur les capacités...terrestres (LCG 1) a cerné la nécessité de mettre au point et de valider une symbologie commune pour chaque soldat qui peut être affichée sur une grande

  17. SkData: data sets and algorithm evaluation protocols in Python

    NASA Astrophysics Data System (ADS)

    Bergstra, James; Pinto, Nicolas; Cox, David D.

    2015-01-01

    Machine learning benchmark data sets come in all shapes and sizes, whereas classification algorithms assume sanitized input, such as (x, y) pairs with vector-valued input x and integer class label y. Researchers and practitioners know all too well how tedious it can be to get from the URL of a new data set to a NumPy ndarray suitable for e.g. pandas or sklearn. The SkData library handles that work for a growing number of benchmark data sets (small and large) so that one-off in-house scripts for downloading and parsing data sets can be replaced with library code that is reliable, community-tested, and documented. The SkData library also introduces an open-ended formalization of training and testing protocols that facilitates direct comparison with published research. This paper describes the usage and architecture of the SkData library.

  18. Comportamiento dinámico de asteroides en la resonancia 2:1

    NASA Astrophysics Data System (ADS)

    López García, F.; Brunini, A.

    El propósito de este trabajo es mostrar los resultados obtenidos del estudio del movimiento de asteroides cercanos a la conmensurabilidad 2:1 con el movimiento medio de Júpiter, analizando el comportamiento de órbitas de asteroides reales y ficticios. Se analizan los tiempos de Lyapunov obtenidos a partir de la integración de las ecuaciones del movimiento. Se han estudiado la órbitas utilizando el modelo de cinco cuerpos y se han considerado los casos planar y espacial. Las simulaciones numéricas se realizaron utilizando integradores simpléticos y el intervalo de tiempo de integración fue de T = 107 años.

  19. Captura de galaxias enanas en cúmulos de galaxias

    NASA Astrophysics Data System (ADS)

    Bassino, L. P.; Muzzio, J. C.; Pérez, J.

    Se investiga el proceso de captura de galaxias enanas por parte de galaxias gigantes, en presencia de un campo externo causado por materia distribuída y otras galaxias pertenecientes al cúmulo en que se produce el fenómeno. Se trabaja mediante simulaciones numéricas, generando condiciones iniciales típicas de cúmulos de galaxias y representando, con un espectro de masas, a las galaxias más masivas y, como partículas de prueba, a las enanas. Se sigue la evolución del sistema empleando un código de integración de N-cuerpos y se analizan los resultados para determinar las capturas de galaxias enanas.

  20. Diffusion du champ électromagnétique dans une sphère ferromagnétique conductrice avec hystérésis

    NASA Astrophysics Data System (ADS)

    Saadi, M.; Jellali, F.; Quichaud, G.

    1995-09-01

    This paper deals with the numerical simulation of a hard steel sphere magnetization under a pulsed current through a solenoid. We could show that the association of the induced current and the magnetic hysteresis leads to a permanent trapped flux loop. We could also confirm the existence of this phenomenon by means of experiment. Cet article concerne la simulation numérique de l'aimantation d'une sphère en acier dur par une brève impulsion de courant dans un soléndide. On montre que les courants induits et l'hystérésis magnétique conduisent à un flux d'induction rémanent piégé d'une façon permanente dans cette sphère. On donne également une mise en évidence expérimentale de ce phénomène.

  1. Thermophysical and Electronic Properties of Foreign Stainless Steels, A Comprehensive Survey of the World Literature,

    DTIC Science & Technology

    1981-11-01

    AUJMI NUM. 6 2 327-S 196# .,.,iEV. e. V. StIVEDOV, L. 1. PAVLENKO, Z. C. 1 ENGLIS - TRANSLATION LF TEPLCFIZ. VYS. TEMP.. 6 .2. 2tTS, S. L.. 1 2 1, 340s-2...9s69 CA 72 81866 2 113-1. 1968 ENGLIS - TRANSLATIC. CF METALLOVED. TERM. OBRAIS. T62?MT.. (2) . 32-0., 1968; FOR ORIGINAL SEE 060023 3 -FFFCT CF SMALL...3-10-900 DEGREE K TE"I-ERATURE 19 C 1 ). 63-4. 1472. RAN’ E . C ENGLIS )H INANSLAT ICR CF TEPLCEER-ETIA. 19 1 1 I CCJ$KOrIS 01. V. YA. GENcASINA, 6. 2

  2. Interactive analysis and visualization of massive earth system models using VAPOR

    NASA Astrophysics Data System (ADS)

    Norton, Alan; Clyne, John

    2013-04-01

    Recent trends in earth system modeling are leading to a dramatic increase in the size of simulation outputs; however current visualization and analysis capabilities do not readily scale with the increased simulation size. VAPOR is a visualization and analysis package that was designed to enable interactive visualization and analysis of these large datasets, using a wavelet-based multiscale data model. VAPOR runs on Mac, Windows and Linux desktops, exploiting the power of modern graphics cards. VAPOR includes several features to facilitate interactive analysis of earth system data, such as built-in support for Python/NumPy scripting, streamlines, particle tracing and geo-referencing. In this presentation the capabilities of VAPOR will be described and applied to various earth system models. We shall show how to use VAPOR to interactively browse and analyze these large datasets, such as the results of the POP ocean model and the WRF-ARW weather model.

  3. Open House at the ESO Headquarters

    NASA Astrophysics Data System (ADS)

    Madsen, C.

    2006-12-01

    On 15 October, the ESO Headquarters opened its doors to the public as part of the All-Campus Open House organised in connection with the inauguration of the extension of the underground line U6 from Munich to the Garching campus. The day was blessed with clear skies and plenty of sunshine, and a large number of citizens took advantage of the opportunity to visit the campus. The estimated number of visitors at ESO was close to 3000 people, a record number. Another record was set by the number of ESO staff who, in anticipation of the high num-ber of guests, volunteered to spend their Sunday at work to explain what ESO is doing and why it is important.

  4. La distribución de objetos en el Cinturón de Kuiper y la posible existencia de un nuevo planeta en el Sistema Solar

    NASA Astrophysics Data System (ADS)

    Brunini, A.

    A pesar de que la capacidad observacional no lo limita, no se han descubierto objetos en el Cinturón de Kuiper más allá de las 50 AU. Recientemente, hemos propuesto que un embrión planetario originalmente formado en la región de Urano-Neptuno, y posteriormente migrado hacia distancias mayores a 50-60 AU, puede explicar este hecho. Presentamos simulaciones numéricas de acreción del Sistema Solar exterior que muestran cómo, naturalmente, podriamos esperar que un planeta de este tipo se encuentre actualmente en regiones distantes del sistema solar. Analizamos además la posibilidad de detectarlo con instrumentos actuales.

  5. Catálogo de mapas de HI en Galaxias y análisis de los datos

    NASA Astrophysics Data System (ADS)

    Martín, M. C.

    Se presenta un catálogo de observaciones de HI en extenso en galaxias, publicadas en las principales revistas hasta 1993. Algunos de los mapas catalogados fueron analizados según simples modelos de distribución gausiana, con el objeto de conseguir un valor aproximado de la extensión real del gas. Así se ha encontrado que dicha extensión se relaciona con el tamaño óptico de la galaxia, y se ha obtenido una expresión numérica que permite estimar ``a priori" la dimensión de la componente gaseosa dentro de una galaxia, conociendo la emisión global del gas obtenida en una observación simple, y su dimensión óptica.

  6. Interactive High Resolution Force-on-Force Model. Main Battle Processor Source Code Listing.

    DTIC Science & Technology

    1994-04-01

    7ORAWMOC (E’~ 0Q.1 THEN V.j..S-i i...NUM-i)’&NR CC DEM&EN"OTM&I OP SEARCH MOOC kIF ALEADY IN C VOETM INF TARGET IS EXPOSED OR IN DEFILADE C SEARCH...2PLX1)--.5 COMMONIMANEUVER3XO20).2Y 2MTE(00MYPR20 C IN HOTR N TARGET ELEVATION &BV(0.)RV(0~)IP92QIPR20 is.NV(IX(S-04fIs DIMENSION SIG (1105.RA(40...ANGLE.ATAN(TOP/SOT) RANGE.RINGIOOO. DO020061..ESMSK C WRITE (.)( SIG (I).6-.40) SF (JSKIP.EO.0) GO TO300 C WRITE (.(AREA(I.6i~m0 CVCCLE THROUGH ALL ENGINE

  7. Sintetizadores de síntesis digital directa

    NASA Astrophysics Data System (ADS)

    Olalde, J. C.; Perilli, D.; Larrarte, J. J.

    Se describen las características e implementación de sintetizadores de alta resolución en frecuencia, <= 2 mHz, tiempos de conmutación rápidos, submicrosegundo, con posibilidad de control de fase basados en la técnica de síntesis digital directa. La implementación se realiza a partir del circuito integrado AD7008, que incluye un oscilador controlado numéricamente y un conversor analógico digital, y en el trabajo se dan pautas para la especificación de los filtros de reconstrucción. El instrumento implementado posee un módulo basado en un microcontrolador INTEL 8752 el cual provee la posibilidad de monitoreo, indicación visual y control en forma local a partir de un teclado; y remoto a partir de un ``host" con interfases RS232 y RS 485.

  8. PyTrilinos: Recent Advances in the Python Interface to Trilinos

    SciTech Connect

    Spotz, William F.

    2012-01-01

    PyTrilinos is a set of Python interfaces to compiled Trilinos packages. This collection supports serial and parallel dense linear algebra, serial and parallel sparse linear algebra, direct and iterative linear solution techniques, algebraic and multilevel preconditioners, nonlinear solvers and continuation algorithms, eigensolvers and partitioning algorithms. Also included are a variety of related utility functions and classes, including distributed I/O, coloring algorithms and matrix generation. PyTrilinos vector objects are compatible with the popular NumPy Python package. As a Python front end to compiled libraries, PyTrilinos takes advantage of the flexibility and ease of use of Python, and the efficiency of the underlying C++, C and Fortran numerical kernels. This paper covers recent, previously unpublished advances in the PyTrilinos package.

  9. Análisis del espectro infrarrojo del polvo interestelar asociado con cúmulos globulares y de su evolución temporal

    NASA Astrophysics Data System (ADS)

    Pellizza, L. J.; Forte, J. C.; Carpintero, D.

    El trabajo que se presenta investiga la dinámica de las partículas de polvo interestelar eyectadas por estrellas gigantes rojas en un cúmulo globular utilizando simulaciones numéricas de su interacción con el campo gravitatorio y con la radiación electromagnética de las estrellas. Se pretende con ello determinar la distribución espacial de ese material como una función del tiempo en un sistema similar a NGC 104 (47 Tuc). A partir de la distribución espacial resultante se obtuvo el espectro infrarrojo integrado el cual sugiere que el máximo contraste con la radiación estelar ocurre en longitudes de onda cercanas a 300 μm y que decrece rápidamente hacia longitudes de onda menores, en las que suelen realizarse las observaciones.

  10. Finite element analysis of a coupling eigenvalue problem on overlapping domains

    NASA Astrophysics Data System (ADS)

    Schepper, Hennie De

    2001-07-01

    In this paper, we consider a nonstandard elliptic eigenvalue problem on a rectangular domain, consisting of two overlapping rectangles, where the interaction between the subdomains is expressed through an integral coupling condition on their intersection. For this problem we set up finite element (FE) approximations, without and with numerical quadrature. The involved error analysis is affected by the nonlocal coupling condition, which requires the introduction and error estimation of a suitably modified vector Lagrange interpolant on the overall FE mesh. As a consequence, the resulting error estimates are sub-optimal, as compared to the ones established, e.g., in Vanmaele and van Keer (RAIRO - Math. Mod. Num. Anal 29(3) (1995) 339-365) for classical eigenvalue problems with local boundary or transition conditions.

  11. Intraerythrocytic Killing of Malaria Parasites

    DTIC Science & Technology

    1986-09-30

    NDEM CO WID F=r Detrick, Frularick, Nnyland 21701-W012 !> ELIEGT-~ ’-w York, New York 10016 -A012 S.....i,:t• Yor, • Yrk lols . MAR, 0 3 9, .• Aproe...release; distribution2 0. 0 1 C L W I A T O N I O W G A D I S 0 4 6 D U Li u n l i m i t e d 4 PIR•ORMING OfAN4IAPTION REPORT NUM641R4) S. MONITORING...ATTN: SGRD-RMA-RC ,4ev York, New York 10016 Fort Detrick, Frederick MD 21701-5014 &L ""AE Of PFUNOI GSPONSOINNG10 W& OFFICE SYMOI. 9. PROCUREMENT

  12. Investigation of Plume Induced Separation on a Full-Size Missile at Supersonic Velocities

    DTIC Science & Technology

    1980-06-20

    OAS CAl FORWARD SASI i.A 0 MON-THRUI RUN o THRUST RUN 14 C 0 0 0 0 0 0 0 ii 0 0 0 0 000 S12 Ii3 1A 1.i 1I PISlJ R AT LA FCMII FROM Sout MLACH NO. g...I jqeqdjt43piQ A~ranaI, Alambmmr 3900 I r 1U I1 FORM 1021. 1 JUL 79 PREVtOUS EDITION IS OW LET 1 2 ) 3 U. C) S DISPOSITION INSTRUCTIONS DESTROY THIS...MISSILETSPROI VELOCITId A_1REA1111 011 1OR UN T NUM1191S 9- PEROROLING OPPICSIO NMANZD ADDRESS 10. ROGRAM EDAIIT. R ..TS Cormmander, US Army Missile Command 20

  13. Meiosis specific coiled-coil proteins in Shizosaccharomyces pombe.

    PubMed

    Ohtaka, Ayami; Saito, Takamune T; Okuzaki, Daisuke; Nojima, Hiroshi

    2007-05-18

    Many meiosis-specific proteins in Schizosaccharomyces pombe contain coiled-coil motifs which play essential roles for meiotic progression. For example, the coiled-coil motifs present in Meu13 and Mcp7 are required for their function as a putative recombinase cofactor complex during meiotic recombination. Mcp6/Hrs1 and Mcp5/Num1 control horsetail chromosome movement by astral microtubule organization and anchoring dynein respectively. Dhc1 and Ssm4 are also required for horsetail chromosome movement. It is clear from these examples that the coiled-coil motif in these proteins plays an important role during the progression of cells through meiosis. However, there are still many unanswered questions on how these proteins operate. In this paper, we briefly review recent studies on the meiotic coiled-coil proteins in Sz. pombe.

  14. Meiosis specific coiled-coil proteins in Shizosaccharomyces pombe

    PubMed Central

    Ohtaka, Ayami; Saito, Takamune T; Okuzaki, Daisuke; Nojima, Hiroshi

    2007-01-01

    Many meiosis-specific proteins in Schizosaccharomyces pombe contain coiled-coil motifs which play essential roles for meiotic progression. For example, the coiled-coil motifs present in Meu13 and Mcp7 are required for their function as a putative recombinase cofactor complex during meiotic recombination. Mcp6/Hrs1 and Mcp5/Num1 control horsetail chromosome movement by astral microtubule organization and anchoring dynein respectively. Dhc1 and Ssm4 are also required for horsetail chromosome movement. It is clear from these examples that the coiled-coil motif in these proteins plays an important role during the progression of cells through meiosis. However, there are still many unanswered questions on how these proteins operate. In this paper, we briefly review recent studies on the meiotic coiled-coil proteins in Sz. pombe. PMID:17509158

  15. Resonancias en la región trans-neptuniana

    NASA Astrophysics Data System (ADS)

    Gallardo, T.; Ferraz-Mello, S.

    La expansión de la órbita del planeta Neptuno en la etapa de acreción del Sistema Solar exterior (Fernández e Ip 1984, 1996) parece ser un mecanismo eficiente para la captura de planetesimales en las resonancias exteriores con Neptuno (Malhotra 1995). Por otro lado, los estudios dinámicos realizados por varios autores indican que las resonancias son regiones de evolución estable, en contraste con el comportamiento caótico del resto de la región trans-neptuniana. Por estas razones, y si bien los datos observacionales son todavía muy limitados, se supone que los objetos descubiertos se encuentran en alguna de esas resonancias. En esta comunicación presentamos un estudio analítico y numérico de las principales resonancias exteriores con Neptuno.

  16. The atomic simulation environment—a Python library for working with atoms

    NASA Astrophysics Data System (ADS)

    Hjorth Larsen, Ask; Jørgen Mortensen, Jens; Blomqvist, Jakob; Castelli, Ivano E.; Christensen, Rune; Dułak, Marcin; Friis, Jesper; Groves, Michael N.; Hammer, Bjørk; Hargus, Cory; Hermes, Eric D.; Jennings, Paul C.; Bjerre Jensen, Peter; Kermode, James; Kitchin, John R.; Leonhard Kolsbjerg, Esben; Kubal, Joseph; Kaasbjerg, Kristen; Lysgaard, Steen; Bergmann Maronsson, Jón; Maxson, Tristan; Olsen, Thomas; Pastewka, Lars; Peterson, Andrew; Rostgaard, Carsten; Schiøtz, Jakob; Schütt, Ole; Strange, Mikkel; Thygesen, Kristian S.; Vegge, Tejs; Vilhelmsen, Lasse; Walter, Michael; Zeng, Zhenhua; Jacobsen, Karsten W.

    2017-07-01

    The atomic simulation environment (ASE) is a software package written in the Python programming language with the aim of setting up, steering, and analyzing atomistic simulations. In ASE, tasks are fully scripted in Python. The powerful syntax of Python combined with the NumPy array library make it possible to perform very complex simulation tasks. For example, a sequence of calculations may be performed with the use of a simple ‘for-loop’ construction. Calculations of energy, forces, stresses and other quantities are performed through interfaces to many external electronic structure codes or force fields using a uniform interface. On top of this calculator interface, ASE provides modules for performing many standard simulation tasks such as structure optimization, molecular dynamics, handling of constraints and performing nudged elastic band calculations.

  17. Shipboard Ammunition Management System: A Database Approach.

    DTIC Science & Technology

    1987-09-01

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  18. Computing Beyond the Church-Turing Limit

    NASA Astrophysics Data System (ADS)

    Jones, Robert

    2009-05-01

    Dershowitz and Gurevich claim to have proven the Church-Turing theorem starting from a set of 4 reasonable postulates. (Bulletin of Symbolic Logic, vol. 14, num. 3, Sept. 2008, pg. 299) But their postulate II assumes fixed vocabulary. Humans, however, change their vocabulary words (and concepts) over time. My Asa H artificial intelligence also changes its vocabulary. (Trans. of the Kansas Acad. of Sci., vol. 109, no. 3/4, pg 159, 2006, www.bioone.org/archive/0022- 8443/109/3/pdf/i0022-8443-109-3-159.pdf) Their postulate I excludes nondeterministic transitions between states. I don't know how often humans flip a coin but my Asa H does employ random transitions under certain circumstances. Perhaps humans and Asa H go beyond the Church-Turing limit. (Trans. Kansas Acad. of Sci., 108, 3/4, pg. 169, 2005)

  19. Beyond linear polarization in gyrokinetic theory

    NASA Astrophysics Data System (ADS)

    Brizard, Alain

    2012-10-01

    The concept of linear gyrocenter polarization in gyrokinetic theory is generalized to include contributions from guiding-center polarization as well as nonlinear (quadratic) gyrocenter polarization. The former polarization is obtained from Hamiltonian guiding-center theory in which higher-order corrections due to magnetic-field nonuniformity are retained [1]. The latter polarization can be derived either variationally from the cubic gyrocenter Hamiltonian [2] or directly by push-forward construction [3]. [4pt] [1] A.J. Brizard and N. Tronko, submitted for publication (2012).[0pt] [2] A. Mishchenko and A.J. Brizard, Phys. Plasmas 18, 022305 (2011).[0pt] [3] A.J. Brizard, Comm. Nonlin. Sci. Num. Sim. 13, 24 (2008).

  20. A New Approach to Inference from Accelerated Life Tests.

    DTIC Science & Technology

    1978-10-01

    Ft A 0 A065 325 0t0R6E WASHINGTON UNIV WASHINGTON D C F~G l’e/2A NEW APPROACH To INFERENCE FROM ACCELERATED LIFE TESTS.(U) OCT 78 F PROSCHAN. N 0...SINSPURWALLA N000 14_t7eC_ 0265 UNCLASSIFIED AFOSI—TR—79—0098 ML P p _____ A REPORT DOCUMENTATION PAGE I ~~~~~~~~~~~~~~~~~~~~~~ I. REPORT NUMBER / 2...GOVT ACCESSION 3. RECIPIENT S CATALOG NUM _ RAFOSR4R. 79-0095 1 4. TITLE (and Subtlt l .) 5~ , TYPE OF REPORT & PERIOD COVERED A NEW APPROACH TO