Thematische Bibliographien / Dynamická SIMS

Inhaltsverzeichnis

Zeitschriftenartikel
Dissertationen
Bücher
Buchteile
Konferenzberichte
Berichte der Organisationen

Auswahl der wissenschaftlichen Literatur zum Thema „Dynamická SIMS“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 9. Februar 2022

Geben Sie eine Quelle nach APA, MLA, Chicago, Harvard und anderen Zitierweisen an

Wählen Sie eine Art der Quelle aus:

Machen Sie sich mit den Listen der aktuellen Artikel, Bücher, Dissertationen, Berichten und anderer wissenschaftlichen Quellen zum Thema "Dynamická SIMS" bekannt.

Neben jedem Werk im Literaturverzeichnis ist die Option "Zur Bibliographie hinzufügen" verfügbar. Nutzen Sie sie, wird Ihre bibliographische Angabe des gewählten Werkes nach der nötigen Zitierweise (APA, MLA, Harvard, Chicago, Vancouver usw.) automatisch gestaltet.

Sie können auch den vollen Text der wissenschaftlichen Publikation im PDF-Format herunterladen und eine Online-Annotation der Arbeit lesen, wenn die relevanten Parameter in den Metadaten verfügbar sind.

Zeitschriftenartikel zum Thema "Dynamická SIMS"

Linton, Richard W. „Direct Imaging of Trace Elements, Isotopes, and Molecules Using Mass Spectrometry“. Microscopy and Microanalysis 4, S2 (Juli 1998): 124–25. http://dx.doi.org/10.1017/s1431927600020742.

Der volle Inhalt der Quelle

Annotation:

Secondary ion mass spectrometry (SIMS) is based upon the energetic ion bombardment of surfaces resulting in in the emission of sputtered particles, including both atomic and molecular ions. The use of mass spectrometric detection provides a highly versatile and sensitive tool for surface and thin film microanalysis. The scope of the technique includes a diversity of analysis modes including:1.Elemental Depth Profiling (dynamic SIMS),2.Laterally Resolved Imaging (ion microprobe or ion microscope analysis),3.Image Depth Profiling (combination of modes 1 and 2 providing 3-D images),4.Molecular Monolayer Analysis and Imaging (static SIMS),5.Sputtered Neutral Mass Spectrometry (post-ionization).Much of the early work in dynamic SIMS centered on depth profiling and imaging techniques, with an emphasis on applications to electronic materials. SIMS has made extensive contributions to semiconductor materials science since the 1960's, including the development of new devices and processes, and in failure analysis.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Linton, Richard W. „Secondary ion mass spectroscopy in the biological and materials sciences“. Proceedings, annual meeting, Electron Microscopy Society of America 51 (01.08.1993): 498–99. http://dx.doi.org/10.1017/s0424820100148320.

Der volle Inhalt der Quelle

Annotation:

Secondary ion mass spectrometry (SIMS) is based upon energetic ion bombardment of surfaces resulting in in the emission of sputtered particles, including both atomic and molecular ions. The use of mass spectrometric detection provides a highly versatile and sensitive tool for surface and thin film chemical analysis. In recent years, the scope of the technique has broadened to include a variety of analysis modes including:1.Elemental Depth Profiling (dynamic SIMS),2.Laterally Resolved Imaging (ion microprobe or ion microscope analysis),3.Image Depth Profiling (combination of modes 1 and 2 providing 3-D images),4.Molecular Monolayer Analysis (static SIMS),5.Sputtered Neutral Mass Spectrometry (post-ionization).Much of the early work in dynamic SIMS centered on the development of depth profiling and imaging techniques, with an emphasis on applications to electronic materials. SIMS has made extensive contributions to semiconductor materials science since the 1960's, including the development of new devices and processes, and in failure analysis.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Singh, Saurabh Kumar, Tulika Gupta, Maheswaran Shanmugam und Gopalan Rajaraman. „Unprecedented magnetic relaxation via the fourth excited state in low-coordinate lanthanide single-ion magnets: a theoretical perspective“. Chem. Commun. 50, Nr. 98 (2014): 15513–16. http://dx.doi.org/10.1039/c4cc05522e.

Der volle Inhalt der Quelle

Annotation:

How to enhance the barrier heights in lanthanide based SIMs? Using ab initio calculations, we have explored the role of symmetry and the coordination number on the magnetization dynamics of four three-coordinate Ln(iii) SIMs.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Lakens, Daniël, und Kirsten I. Ruys. „The dynamic interaction of conceptual and embodied knowledge“. Behavioral and Brain Sciences 33, Nr. 6 (Dezember 2010): 449–50. http://dx.doi.org/10.1017/s0140525x10001329.

Der volle Inhalt der Quelle

Annotation:

AbstractWe propose the SIMS model can be strengthened by detailing the dynamic interaction between sensorimotor activation and contextual conceptual information. Rapidly activated evaluations and contextual knowledge can guide and constrain embodied simulations. In addition, we stress the potential importance of extending the SIMS model to dynamic social interactions that go beyond the passive observer.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Fahey, A. J. „Isotopic Measurements of Inorganic Material by Time-Of-Flight SIMS“. Microscopy and Microanalysis 4, S2 (Juli 1998): 412–13. http://dx.doi.org/10.1017/s1431927600022182.

Der volle Inhalt der Quelle

Annotation:

Isotopic measurements via Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) have generally not been considered as practical because of the low duty cycle at which ToF-SIMS instruments operate and the corresponding low data rate. The recent discovery of pre-solar material in meteorites has shown that large variations in isotopic ratios (several orders of magnitude for some elements) exist in small (∼1 μm), refractory meteoritic grains. These grains are ideal candidates for ToF-SIMS, which consumes little sample material, compared to dynamic, magneticsector SIMS. ToF-SIMS also allows for parallel detection of all species present in the sample; thus, multiple isotopic systems can be studied in one measurement. As a prerequisite to studying the isotopic composition of meteoritic materials, preliminary determinations of ratios for a number of elements have been made on materials of known isotopic composition. This allows us to investigate problems that may be unique to ToF-SIMS for the measurement of isotopic ratios.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Lodding, A. „SIMS of Biomineralized Tissues: Present Trends and Potentials“. Advances in Dental Research 11, Nr. 4 (November 1997): 364–79. http://dx.doi.org/10.1177/08959374970110040101.

Der volle Inhalt der Quelle

Annotation:

The technique of dynamic secondary ion mass spectrometry (SIMS) has, during the 1980s, become a firmly established tool in the microanalytical and microstructural characterization of dental hard tissues. SIMS has proved to be outstandingly suited for charting the distributions of most elements, even at extremely low concentrations, in tooth and bone materials. In-depth concentration profiles as well as surface distribution maps of elements have been recorded with excellent (sub-micron) morphologic resolution. In spite of documented success, only relatively few teams, in a handful of countries, are presently engaged, to any significant extent, in conducting tooth or bone research by the application of SIMS. For dental-medical-surgical laboratories, a partial reason for non-communication is a lack of information about SIMS and its particular assets. Another reason may be connected with an essentially groundless reputation, among non-specialists, of SIMS being an exclusive and expensive technique. Among SIMS laboratories, on the other hand, the inertia in tackling biomineralization is partly due to some particular artifacts of analysis, hitherto not generally known and controlled. The present paper briefly sketches the chief principles of modem SIMS, emphasizing factors of special relevance in the characterization of biomineralized tissues. Examples of recent applications are provided. Present procedures and their limitations are discussed, especially with regard to elemental quantification and imaging. Suggestions for relatively simple modifications to existing routines are offered with the aim of enhancing the ease and availability of SIMS in odontological and surgical research.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Alzbutas, R., und V. Janilionis. „THE SIMULATION OF DYNAMIC SYSTEMS USING COMBINED MODELLING“. Mathematical Modelling and Analysis 5, Nr. 1 (15.12.2000): 7–17. http://dx.doi.org/10.3846/13926292.2000.9637123.

Der volle Inhalt der Quelle

Annotation:

The new approach to the problems of dynamic systems simulation is proposed. The analytical and imitation modelling of non‐linear complex dynamic systems which comprise simulation of continuous and discrete processes with constant and variable parameters, are investigated. The aggregate mathematical modelling scheme [1] and the method of control sequences for discrete systems specification and simulation are used as well as the dynamic mathematical modelling scheme for continuous process formalization and modelling. According to them the investigated systems are presented as the set of interacting piecewise linear aggregates, which can include processes described with differential equations. The above mentioned approach is used in developing software for the construction and research of the models. The modelling of the dynamic systems’ control is also analyzed and developed software for the dynamic systems’ simulation is presented. It is related to the proposed combined modelling methodology. The developed dynamical simulation system ADPRO (Automatic Differentiation PROgram) extends applicability of the system SIMAS (SIMulation of the Aggregate Systems) [2] with dynamical simulation means realized with APL2 (A Programming Language 2) and based on automatic differentiation [3]. The created model of service process and its control can be used as a base for other models of wide class complex dynamics’ systems [4], the parts of which are described with differential equations.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Martinez-Limia, Alberto, Peter Pichler, Christian Steen, Silke Paul und Wilfried Lerch. „Modeling of the Diffusion and Activation of Arsenic in Silicon Including Clustering and Precipitation“. Solid State Phenomena 131-133 (Oktober 2007): 277–82. http://dx.doi.org/10.4028/www.scientific.net/ssp.131-133.277.

Der volle Inhalt der Quelle

Annotation:

We have developed a diffusion and activation model for implanted arsenic in silicon. The model includes the dynamic formation of arsenic-vacancy complexes (As4V) as well as the precipitation of a SiAs phase. The latter is mandatory to correctly describe concentrations above solid solubility while the former are needed to describe the reduced electrical activity as well as the generation of self-interstitials during deactivation. In addition, the activation state after solid-phase epitaxy and the segregation at the interface to SiO2 are taken into account. After implementation using the Alagator language in the latest version of the Sentaurus Process Simulator of Synopsys, the parameters of the model were optimized using reported series of diffusion coefficients for temperatures between 700 °C and 1200 °C, and using several SIMS profiles covering annealing processes from spike to very long times with temperatures between 700 °C and 1050 °C and a wide distribution of implantation energies and doses. The model was validated using data from flash-assisted RTP and spike annealing of ultra-low energy arsenic implants.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Lee, J. J., J. L. Hunter, W. J. Lin und R. W. Linton. „Three-Dimensional Display of Secondary Ion Images“. Proceedings, annual meeting, Electron Microscopy Society of America 48, Nr. 2 (12.08.1990): 344–45. http://dx.doi.org/10.1017/s0424820100135320.

Der volle Inhalt der Quelle

Annotation:

Since the sample surface region is continuously sputtered in dynamic secondary ion mass spectrometry (SIMS), three dimensional (3D) chemical maps can be obtained by acquiring a series of two dimensional (2D) images. Owing to the limitations of the ion beam sputtering technique, SIMS analysis artifacts resulting from factors such as surface roughness, matrix effects, and atomic mixing are present in the 3D volume data. One potential advantage of using 3D display is to provide visual feedback regarding the elimination of artifacts by utilizing correction algorithms as well as correlative information obtained from other surface imaging techniques. In this paper, SIMS 3D maps are displayed by a volume rendering technique in which more information is retained in the image processing steps.Various 3D display methods have been proposed for SIMS and other microscopic imaging techniques. Some of the previous methods can not display the complete 3D spatial distribution of mass-selected ion intensities.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Frickel, Scott, und Neil Gross. „A General Theory of Scientific/Intellectual Movements“. American Sociological Review 70, Nr. 2 (April 2005): 204–32. http://dx.doi.org/10.1177/000312240507000202.

Der volle Inhalt der Quelle

Annotation:

The histories of all modern scientific and intellectual fields are marked by dynamism. Yet, despite a welter of case study data, sociologists of ideas have been slow to develop general theories for explaining why and how disciplines, subfields, theory groups, bandwagons, actor networks, and other kindred formations arise to alter the intellectual landscape. To fill this lacuna, this article presents a general theory of scientific/intellectual movements (SIMs). The theory synthesizes work in the sociology of ideas, social studies of science, and the literature on social movements to explain the dynamics of SIMs, which the authors take to be central mechanisms for change in the world of knowledge and ideas. Illustrating their arguments with a diverse sampling of positive and negative cases, they define SIMs, identify a set of theoretical presuppositions, and offer four general propositions for explaining the social conditions under which SIMs are most likely to emerge, gain prestige, and achieve some level of institutional stability.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Mehr Quellen

Dissertationen zum Thema "Dynamická SIMS"

Janák, Marcel. „Diagnostika polovodičů a monitorování chemických reakcí metodou SIMS“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443241.

Der volle Inhalt der Quelle

Annotation:

Hmotnostná spektrometria sekundárnych iónov s analýzou doby letu (TOF-SIMS) patrí vďaka vysokej citlivosti na prvkové zloženie medzi významné metódy analýzy pevných povrchov. Táto práca demonštruje možnosti TOF-SIMS v troch odlišných oblastiach výskumu. Prvá časť práce sa zaoberá lokalizáciou defektov vysokonapäťových polovodičových súčiastok, ktorá je nevyhnutná k ich ďalšiemu skúmaniu metódou TOF-SIMS. Bola navrhnutá experimentálna zostava s riadiacim softvérom umožňujúca automatizované meranie záverného prúdu v rôznych miestach polovodičový súčiastok. Druhá časť práce sa zaoberá kvantifikáciou koncentrácie Mg dopantov v rôznych hĺbkach vzoriek AlGaN. Kvantifikácia je založená na metóde RSF a umožňuje charakterizáciu AlGaN heteroštruktúr určených na výrobu tranzistorov s vysokou elektrónovou mobilitou (HEMT) alebo na výrobu rôznych optoelektronických zariadení. Sada 12 AlGaN kalibračných vzoriek dopovaných Mg, určených na kvantifikáciu hĺbkových profilov, bola pripravená metódou iónovej implantácie. Posledná časť práce demonštruje možnosti metódy TOF-SIMS vo výskume heterogénnej katalýzy. Hlavným objektom nášho výskumu je dynamika oxidácie CO na oxid uhličitý na polykryštalickom povrchu platiny za tlakov vysokého vákua. V tejto práci prezentujem prvé TOF-SIMS pozorovanie časopriestorových vzorov v reálnom čase, ktoré vznikajú v dôsledku rôzneho pokrytia povrchu Pt reaktantmi. Výsledky TOF-SIMS experimentu boli porovnané s výsledkami podobného experiment v rastrovacom elektrónovom mikroskope (SEM).

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Holkovič, Martin. „SDN řízené pomocí identity uživatelů“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2015. http://www.nusl.cz/ntk/nusl-235018.

Der volle Inhalt der Quelle

Annotation:

The aim of this work is to connect dynamic identity management system developed under the project Sec6Net with a control of SDN network. The controller Pyretic is used for network control, which allows application development by using the match-action rules. Interface between the identity management system and controller Pyretic is designed and implemented in both systems. To prove the concept, selected use cases related to security, routing and accounting are created. The use cases are implemented as applications for Pyretic controller. All programs were tested in networking laboratory according to the possibilities. The main contribution of this work is to simplify and improve the management of computer networks while providing new capabilities to administrators of these networks and ultimately their users.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Sims, Kirk [Verfasser]. „Dynamics of international mission in the Methodist Church Ghana / Kirk Sims“. Frankfurt a.M. : Peter Lang GmbH, Internationaler Verlag der Wissenschaften, 2018. http://d-nb.info/1173660690/34.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Zhuang, Lili. „Bayesian Dynamical Modeling of Count Data“. The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1315949027.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Jana, Arindam. „Collage et adhérence de particules dans le domaine de la sous-monocouche“. Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0074/document.

Der volle Inhalt der Quelle

Annotation:

Au cours d’un traitement de surface de type dépôt assisté par plasma, les caractéristiques et propriétés de l’interface entre le dépôt et le substrat sont déterminées par la première couche atomique du dépôt, voire les premiers atomes qui commencent à recouvrir la surface du substrat. Aussi, la parfaite connaissance du comportement des particules incidentes et du réarrangement des atomes suite à l’impact d’une particule du plasma est-elle un élément essentiel à la description du comportement de la surface en cours de traitement et donc de ses propriétés ultérieures. Au cours de cette thèse, nous avons entrepris d’étudier, par une approche combinant expériences et simulation numérique par dynamique moléculaire, l’interaction d’espèces (C, Ti, W) avec une surface de silicium en fonction de paramètres tels que l’énergie, la fluence ou encore l’incidence des particules arrivant sur la surface. Une part importante de ce travail a consisté à adapter les codes de dynamique moléculaire (utilisation des champs de force réactifs) aux systèmes étudiés. La partie expérimentale a nécessité la mise en place de procédures spécifiques pour l’utilisation de l’équipement Storing Matter. Les résultats montrent que, quelles que soient l’espèce incidente, parmi celles étudiées, le coefficient de collage (SC) est dans la gamme [0.7 – 1] ; dans le cas de W, quasiment tous les atomes incidents restent sur la surface (SC~~1). Outre la détermination du coefficient de collage, pour différentes conditions initiales des espèces incidentes (énergie, incidence, fluence) les modifications apportées à la surface ont également été déterminées en termes d’implantation et de trajectoire dans le matériau des espèces incidentes, et de pulvérisation de la surface du substrat
During plasma assisted deposition, properties of the coating substrate interface depend on the first atomic layer of the deposit, or the atoms that first start to cover the surface. Therefore the good knowledge of the sticking coefficient and the reorganization of the surface following particle impact is an essential issue to achieve the description of the behavior of the processed surface and, therefore, its expected properties. Consequently, we investigated the interaction between incoming particles (C, Ti, W) and a silicon surface by using an approach combining molecular dynamic simulations and experiments. Various initial conditions were studied, energy, fluence and incidence angle of the incoming particles. An important part of this work has consisted in adapting the molecular dynamic codes (using reactive force fields) to the investigated systems. Meanwhile, experimental procedure specifically devoted to the use of the Storing Matter facility was also developed. Results show that the sticking coefficient (SC) value is in the range [0.7 – 1] irrespectively of the incoming species; in the case of W, almost all atoms stick on the surface (SC~~1). Besides the determination of sticking coefficient, the surface modification resulting from the particles impingement were determined for various initial conditions (energy, fluence, angle) in terms of implantation and displacement of the incoming species, and surface sputtering as well

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Kalathingal, Sajith. „Transforming TLP into DLP with the dynamic inter-thread vectorization architecture“. Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1S133/document.

Der volle Inhalt der Quelle

Annotation:

De nombreux microprocesseurs modernes mettent en œuvre le multi-threading simultané (SMT) pour améliorer l'efficacité globale des processeurs superscalaires. SMT masque les opérations à longue latence en exécutant les instructions de plusieurs threads simultanément. Lorsque les threads exécutent le même programme (cas des applications SPMD), les mêmes instructions sont souvent exécutées avec des entrées différentes. Les architectures SMT traditionnelles exploitent le parallélisme entre threads, ainsi que du parallélisme de données explicite au travers d'unités d'exécution SIMD. L'exécution SIMD est efficace en énergie car le nombre total d'instructions nécessaire pour exécuter un programme est significativement réduit. Cette réduction du nombre d'instructions est fonction de la largeur des unités SIMD et de l'efficacité de la vectorisation. L'efficacité de la vectorisation est cependant souvent limitée en pratique. Dans cette thèse, nous proposons l'architecture de vectorisation dynamique inter-thread (DITVA) pour tirer parti du parallélisme de données implicite des applications SPMD en assemblant dynamiquement des instructions vectorielles à l'exécution. DITVA augmente un processeur à exécution dans l'ordre doté d'unités SIMD en lui ajoutant un mode d'exécution vectorisant entre threads. Lorsque les threads exécutent les mêmes instructions simultanément, DITVA vectorise dynamiquement ces instructions pour assembler des instructions SIMD entre threads. Les threads synchronisés sur le même chemin d'exécution partagent le même flot d'instructions. Pour conserver du parallélisme de threads, DITVA groupe de manière statique les threads en warps ordonnancés indépendamment. DITVA tire parti des unités SIMD existantes et maintient la compatibilité binaire avec les architectures CPU existantes
Many modern microprocessors implement Simultaneous Multi-Threading (SMT) to improve the overall efficiency of superscalar CPU. SMT hides long latency operations by executing instructions from multiple threads simultaneously. SMT may execute threads of different processes, threads of the same processes or any combination of them. When the threads are from the same process, they often execute the same instructions with different data most of the time, especially in the case of Single-Program Multiple Data (SPMD) applications.Traditional SMT architecture exploit thread-level parallelism and with the use of SIMD execution units, they also support explicit data-level parallelism. SIMD execution is power efficient as the total number of instructions required to execute a complete program is significantly reduced. This instruction reduction is a factor of the width of SIMD execution units and the vectorization efficiency. Static vectorization efficiency depends on the programmer skill and the compiler. Often, the programs are not optimized for vectorization and hence it results in inefficient static vectorization by the compiler.In this thesis, we propose the Dynamic Inter-Thread vectorization Architecture (DITVA) to leverage the implicit data-level parallelism in SPMD applications by assembling dynamic vector instructions at runtime. DITVA optimizes an SIMD-enabled in-order SMT processor with inter-thread vectorization execution mode. When the threads are running in lockstep, similar instructions across threads are dynamically vectorized to form a SIMD instruction. The threads in the convergent paths share an instruction stream. When all the threads are in the convergent path, there is only a single stream of instructions. To optimize the performance in such cases, DITVA statically groups threads into fixed-size independently scheduled warps. DITVA leverages existing SIMD units and maintains binary compatibility with existing CPU architectures

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Panetier, Clémentine. „Étude des mécanismes de migration du césium dans le dioxyde d'uranium stoechiométrique et sur-stoechiométrique : influence du molybdène“. Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1248/document.

Der volle Inhalt der Quelle

Annotation:

Dans le combustible nucléaire UO2, utilisé dans les réacteurs à eau pressurisée (REP), le Cs, élément volatil compte parmi les produits de fission (PF) les plus abondamment produits. De plus, l’isotope 137Cs est connu pour être particulièrement radiotoxique. En cas d’accident, le relâchement de cet isotope est donc problématique et son étude est cruciale pour la sûreté nucléaire. En France, l’IRSN (Institut de Radioprotection et de sureté nucléaire) développe des codes de prédictions du relâchement des PF depuis le combustible, tels que MFPR (Module for Fission Product Release). Ces codes nécessitent d’être alimentés par des données fondamentales sur le comportement des PF. Ainsi, la connaissance des coefficients de diffusion de ces éléments dans la matrice combustible en fonction de la température et de l’atmosphère (pouvant oxyder le combustible en UO2+x) est primordiale. Dans ce contexte, l’objectif de cette thèse, menée en collaboration avec l’IRSN, est d’étudier la migration du Cs dans le dioxyde d’uranium stœchiométrique et sur-stœchiométrique, en conditions représentatives d’un fonctionnement normal et accidentel d’un REP, avec et sans la présence de Mo. Ce dernier est un PF abondamment produit qui agit comme tampon d’oxydation du combustible et est capable d’avoir des interactions chimiques avec le césium. De telles interactions pourraient affecter le comportement du Cs, et donc son relâchement depuis le combustible. Il a donc été nécessaire d’envisager les éventuelles interactions entre le Cs et le Mo dans le cadre de notre étude. La démarche expérimentale a consisté à simuler la présence de Cs et/ou Mo dans des pastilles d’UO2 ou d’UO2+x. par implantations ioniques des isotopes stables 133Cs et/ou 95Mo. Des recuits à haute température (950-1600°C) sous atmosphère contrôlée ou des irradiations en régime électronique couplées en température ont ensuite été réalisés, permettant d’induire la migration du Cs et du Mo. La spectrométrie de masse à ionisation secondaire (SIMS) a été utilisée pour suivre l’évolution des profils de concentration des éléments implantés, permettant d’extraire les coefficients de diffusion apparents du Cs dans UO2 et UO2+x en fonction des différents traitements. Une étude complémentaire de la microstructure a été réalisée par spectroscopie Raman et microscopie électronique en transmission (MET). Le Cs est très mobile dans UO2 sous atmosphère réductrice même si une partie et piégée sous forme de bulles à faible profondeur. Nous avons mis en évidence que la présence de Mo diminuait fortement cette mobilité. La même tendance est observée dans UO2+x sous atmosphère oxydante. Néanmoins les mécanismes d’immobilisation du Cs par le Mo diffèrent selon les conditions redox de recuit. En atmosphère réductrice, les expériences MET ont montré la formation de paires bulles de Cs-précipités métalliques de Mo dans les échantillons co-implantés. En atmosphère oxydante, l’absence de mobilité du Cs pourrait être liée à l’oxydation du Mo rendant possible des interactions chimiques Cs-Mo. Pour la première fois, des potentiels semi-empiriques ont été utilisés pour réaliser des calculs de dynamique moléculaire sur la diffusion du Cs et du Mo dans UO2 et UO2+x. Ces calculs nous ont aussi permis de caractériser les mécanismes de diffusion de l’oxygène dans ces matériaux en présence de ces deux PF
In the nuclear fuel UO2, which is widely used in Pressurized Water Reactor (PWR), Cs is a volatile element and is one of the most abundant fission product (FP). Furthermore, 137Cs is known to be highly radiotoxic. During a hypothetical accident, release of Cs would be particularly problematic for the environment. Hence, study of this element is of major concern for nuclear safety. To assess this issue, the French nuclear safety institute (IRSN) develops codes to predict FP release from nuclear fuel in normal and accidental conditions. This code requires fundamental data on FP behavior such as diffusion coefficient of these elements in UO2 as a function of temperature and atmosphere conditions (leading to UO2+x formation in oxidative conditions). The aim of this PhD, supported by the IRSN, is to study Cs migration in stoichiometric and hyper-stoichiometric uranium dioxide with and without the presence of Mo, in normal and accidental conditions of a PWR. This latter element is also an abundant FP, which is important to consider because it acts as an oxygen buffer in the fuel and may interact chemically with Cs. Such interactions may affect Cs behavior, hence its release from the fuel. Therefore, Cs-Mo interactions are considered in our study. The experimental procedure consists in simulating the Cs and/or Mo presence in UO2 and UO2+x pellets by ion implantation of stable isotopes 133Cs and/or 95Mo. Then, high temperature annealing (950 °C - 1600 °C) under controlled atmosphere or electronic excitations induced by irradiation coupled with temperature are performed to induce Cs and Mo migration. Secondary Ion Mass Spectrometry (SIMS) is used to follow the concentration profile evolution of these elements, allowing extracting effective diffusion coefficients of Cs in UO2 and UO2+x as a function of irradiation or thermal treatment. Microstructure characterizations were made by Raman spectroscopy and transmission electron microscopy (TEM). We show that Cs is mobile in UO2 under reducing atmosphere, even though some of the Cs is trapped in Cs-bubbles located near the surface. We evidence that Mo presence prevents Cs to be mobile. The same tendency is observed in UO2+x under oxidizing atmosphere. Nevertheless, Cs immobilization mechanisms in presence of Mo vary upon redox conditions used during annealing. In reducing conditions, TEM experiments showed formation of Cs bubbles associated with Mo metallic precipitates in co-implanted samples. In oxidative conditions, absence of Cs mobility could be explained by Mo oxidation leading to possible Cs-Mo chemical interactions. For the first time, semi-empirical potentials were used to perform molecular dynamic (MD) calculations on Cs and Mo diffusion in UO2 and UO2+x. These simulations also allowed characterizing oxygen diffusion mechanisms in these matrixes in presence of Cs and Mo

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Fung, Wilson Wai Lun. „Dynamic warp formation : exploiting thread scheduling for efficient MIMD control flow on SIMD graphics hardware“. Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/2268.

Der volle Inhalt der Quelle

Annotation:

Recent advances in graphics processing units (GPUs) have resulted in massively parallel hardware that is easily programmable and widely available in commodity desktop computer systems. GPUs typically use single-instruction, multiple-data (SIMD) pipelines to achieve high performance with minimal overhead for control hardware. Scalar threads running the same computing kernel are grouped together into SIMD batches, sometimes referred to as warps. While SIMD is ideally suited for simple programs, recent GPUs include control flow instructions in the GPU instruction set architecture and programs using these instructions may experience reduced performance due to the way branch execution is supported by hardware. One solution is to add a stack to allow different SIMD processing elements to execute distinct program paths after a branch instruction. The occurrence of diverging branch outcomes for different processing elements significantly degrades performance using this approach. In this thesis, we propose dynamic warp formation and scheduling, a mechanism for more efficient SIMD branch execution on GPUs. It dynamically regroups threads into new warps on the fly following the occurrence of diverging branch outcomes. We show that a realistic hardware implementation of this mechanism improves performance by an average of 47% for an estimated area increase of 8%.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Johansson, David. „Modelling the Dynamics and Forcesof Wave Energy Converters using WEC-Sim“. Thesis, Uppsala universitet, Institutionen för fysik och astronomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-415841.

Der volle Inhalt der Quelle

Annotation:

The waves traveling on the surface of the world’s oceans carry atremendous amount of energy. The ability to convert this energy forhuman use has the potential to help solves the worlds energy problem. Adirect-drive linear generator point absorber is a wave energy converter(WEC) that aims to reduce the complexity of the overall system andshelter the most vulnerable parts of the system by placing them on theseabed. This concept builds around the buoy moving up and down indifferent sea-states which leads to a correlating vertical movement of thestroke in the generator resulting in the conversion of mechanical energyto power. This report aims to explore the possibility to use the open codeWEC-Sim to model the Uppsala University direct-drive linear generatorWEC in extreme sea states and to identify the resulting extreme loads. Theconstructed WEC-Sim model constrained the buoys motion in heave andsurge and limited its range of motion by modeling the generators upperend-stop spring. Simulations were run for different sea-states and theresulting forces on the system were analyzed. The peak line force for thedifferent sea states was calculated and compared to previous studies. Theresults validated the model as they showed a good correlation for mostsea-states. It was only for larger significant wave heights that there was adivergence compared to the results in previous studies.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Holewinski, Justin A. „Automatic Code Generation for Stencil Computations on GPU Architectures“. The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1354545992.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Mehr Quellen

Bücher zum Thema "Dynamická SIMS"

Rubenzer, Steven J. Assessing Negative Response Bias in Competency to Stand Trial Evaluations. Oxford University Press, 2018. http://dx.doi.org/10.1093/med-psych/9780190653163.001.0001.

Der volle Inhalt der Quelle

Annotation:

Assessing Negative Response Bias in Competency to Stand Trial Evaluations provides a comprehensive guide to assessing malingering, feigning, poor effort, and lack of cooperation in competency to stand trial (CST) examinations. It draws on both the author’s extensive experience as a CST examiner and the vast, dynamic professional literature from forensic psychology, clinical psychology, and neuropsychology on assessing response style. The assessment process is considered from beginning to report writing and testimony, with tips regarding interview strategies, fact patterns and behaviors suggestive of feigning, testing, and creative and ethical use of collateral data. Every major validity test used by CST examiners is thoroughly and critically reviewed, as are others that are promising and not yet widely adopted. This includes self-report inventories such as the MMPI-2, MMPI-2-RF, PAI, and SIMS; structured interviews like the SIRS, SIRS-2, and M-FAST; performance validity tests like the TOMM, VIP, 15 item Test, and WMT; and CST-specific tests like the ILK and ECST-R Atypical Presentation Scales. A complete chapter is devoted to means to summarize and combine data from different tests and sources, and another to special populations such as defendants who claim amnesia, are intellectually disabled, or are adolescents. Report writing and testimony considerations are discussed in detail, with implications for the assessment and practice. In Chapter 10, CST examiners’ practices, including preferences for tests and collateral sources, are reported along with the perceived prevalence of various invalid presentation styles. Finally, policy implications of feigning and suggestions for cost-effective practice are provided.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Bishop, H. E., P. R. Chalker und D. W. Smart. Dynamic SIMS Analysis of Nickel Sequentially Oxidised in [16]O[2] and [18]O[2] Atmospheres. AEA Technology Plc, 1987.

Den vollen Inhalt der Quelle finden

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Seborg. Process Dynamics & Control with Using Process Simu Lators in Chemical Engineering V2.0 Set. John Wiley & Sons Inc, 2003.

Den vollen Inhalt der Quelle finden

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Aronson, Pamela. The Dynamics and Causes of Gender and Feminist Consciousness and Feminist Identities. Herausgegeben von Holly J. McCammon, Verta Taylor, Jo Reger und Rachel L. Einwohner. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780190204204.013.5.

Der volle Inhalt der Quelle

Annotation:

The development of consciousness or an activist identity is a precursor to activism on behalf of women’s issues. This chapter examines the dynamics and causes of women’s gender consciousness, feminist consciousness and feminist identities and argues that they should be understood on a continuum. Gender consciousness (awareness of women’s political and social interests as women) includes a wide range of activism. Feminist consciousness (awareness and critique of gender inequalities) sits in the middle of the continuum. It accounts for perspectives that are implicitly feminist while rejecting feminist identity, including those of contemporary young women, working class, or women of color who critique the women’s movement while simultaneously supporting feminist ideologies. Feminist identities are adopted when women develop alternative visions for gender relations based on a collective identity. Consciousness and identity are influenced by age, class, race and ethnicity, and sexual orientation and are thus diverse and changing historically.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Bittner, Edward A., und Shawn P. Fagan. The host response to trauma and burns in the critically ill. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0304.

Der volle Inhalt der Quelle

Annotation:

Following severe traumatic injury, patients enter a state of immune dysregulation consisting of both exaggerated inflammation and immune suppression. Traditionally, the host response has been viewed as an early systemic inflammatory response syndrome (SIRS) followed temporally by a compensatory anti-inflammatory or immune-suppressive response syndrome (CARS). While this paradigm has been widely accepted across both medical and scientific fields, recent advances have challenged this concept. The Glue grant investigators recently characterized both the initial inflammatory response to injury and the dynamic evolving recovery process. They found: (1) severe injury produces a rapid (< 12 hours) genomic reprioritization in which 80% of the leukocyte transcriptome is altered; (2) similarities in gene expression patterns between different injuries reveal an apparently fundamental response to severe inflammatory stress, which is far more common than different; (3) alterations in the expression of classical inflammatory and anti-inflammatory as well as adaptive immunity genes occur simultaneously, not sequentially after severe injury; (4) the temporal nature of the current SIRS/CARS paradigm is not supported at the level of the leukocyte transcriptome. Complications are not associated with genomic evidence of a ‘second hit’ and differ only in the magnitude and duration of this genomic reprioritization. Furthermore, the delayed clinical recovery with organ injury is not associated with dramatic qualitative differences in the leukocyte transcriptome. Finally, poor correlation between human and rodent inflammatory genomic responses will alter how the host response is studied in the future.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Buchteile zum Thema "Dynamická SIMS"

Hutter, Herbert. „Dynamic Secondary Ion Mass Spectrometry (SIMS)“. In Surface and Thin Film Analysis, 141–59. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2011. http://dx.doi.org/10.1002/9783527636921.ch8.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Jackson, David. „Change: Seven Sins, Seven Virtues“. In Dynamic Organisations, 158–68. London: Palgrave Macmillan UK, 1997. http://dx.doi.org/10.1007/978-1-349-14169-2_8.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Seifert, Michael, Mohammed Saleem, Daniel Breitenstein, Hans-Joachim Galla und Michaela C. Meyer. „ToF-SIMS Imaging of Lipid/Protein Model Systems“. In Structure and Dynamics of Membranous Interfaces, 19–43. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9780470388495.ch2.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Rajaji, R. „Dynamics of Stochastic SIRS Model“. In Trends in Mathematics, 415–23. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01120-8_46.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Krzikalla, Olaf, Florian Wende und Markus Höhnerbach. „Dynamic SIMD Vector Lane Scheduling“. In Lecture Notes in Computer Science, 354–65. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-46079-6_25.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Khurpia, Naman, Arunim Roy, Saransh Goyal und J. Saira Banu. „Simulation of MD Using OpenMP and OpenMP–SIMD“. In Advances in Fluid Dynamics, 519–27. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4308-1_40.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Karrenberg, Ralf. „Dynamic Code Variants“. In Automatic SIMD Vectorization of SSA-based Control Flow Graphs, 127–39. Wiesbaden: Springer Fachmedien Wiesbaden, 2015. http://dx.doi.org/10.1007/978-3-658-10113-8_7.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Chauhan, Sudipa, Sumit Kaur Bhatia und Nidhi Purohit. „Dynamics of Sirs Model with Single Time Delay“. In Industrial Mathematics and Complex Systems, 337–50. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-3758-0_24.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Vervisch, L., J. Réveillon, S. Melen und D. Vandromme. „Turbulent combustion modeling using complex chemistry on SIMD architecture“. In Computational Fluid Dynamics on Parallel Systems, 188–97. Wiesbaden: Vieweg+Teubner Verlag, 1995. http://dx.doi.org/10.1007/978-3-322-89454-0_18.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Dowsett, M. G., E. H. C. Parker und D. S. McPhail. „High Dynamic Range SIMS Depth Profiles for Aluminium in Silicon-on-Sapphire“. In Springer Series in Chemical Physics, 340–42. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-82724-2_90.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Konferenzberichte zum Thema "Dynamická SIMS"

Huang, Yanhua, Lei Zhu, Kenny Ong, Hanwei Teo und Younan Hua. „An Effective SIMS Methodology for GOI Contamination Analysis“. In ISTFA 2013. ASM International, 2013. http://dx.doi.org/10.31399/asm.cp.istfa2013p0427.

Der volle Inhalt der Quelle

Annotation:

Abstract Contamination in the gate oxide layer is the most common effect which cause the gate oxide integrate (GOI) issue. Dynamic Secondary Ion Mass Spectrometry (SIMS) is a mature tool for GOI contamination analysis. During the sample preparation, all metal and IDL layers above poly should be removed because the presence of these layers added complexity for the subsequent SIMS analysis. The normal delayering process is simply carried out by soaking the sample in the HF solution. However, the poly surface is inevitably contaminated by surroundings even though it is already a practice to clean with DI rinse and tape. In this article, TOFSIMS with low energy sputter gun is used to clean the sample surface after the normal delayering process. The residue signals also can be monitored by TOF SIMS during sputtering to confirm the cross contamination is cleared. After that, a much lower background desirable by dynamic SIMS. Thus an accurate depth profile in gate oxide layer can be achieved without the interference from surface.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Frijns, Raymond, Hamed Fatemi, Bart Mesman und Henk Corporaal. „DC-SIMD : Dynamic communication for SIMD processors“. In Distributed Processing Symposium (IPDPS). IEEE, 2008. http://dx.doi.org/10.1109/ipdps.2008.4536274.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Juuso, Esko K. „Intelligent dynamic simulation of fed-batch fermentation processes“. In The 60th SIMS Conference on Simulation and Modelling SIMS 2019, August 12-16, Västerås, Sweden. Linköping University Electronic Press, 2020. http://dx.doi.org/10.3384/ecp20170132.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Vytvytskyi, Liubomyr, und Bernt Lie. „Structural analysis in Julia for dynamic systems in OpenModelica“. In The 60th SIMS Conference on Simulation and Modelling SIMS 2019, August 12-16, Västerås, Sweden. Linköping University Electronic Press, 2019. http://dx.doi.org/10.3384/ecp2017017.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Nordal, Helge, und Idriss El-Thalji. „Operations Dynamics of Gas Centrifugal Compressor: Process, Health and Performance Indicators“. In The 60th SIMS Conference on Simulation and Modelling SIMS 2019, August 12-16, Västerås, Sweden. Linköping University Electronic Press, 2020. http://dx.doi.org/10.3384/ecp20170229.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Clark, Nathan, Amir Hormati, Sami Yehia, Scott Mahlke und Krisztian Flautner. „Liquid SIMD: Abstracting SIMD Hardware using Lightweight Dynamic Mapping“. In 2007 IEEE 13th International Symposium on High Performance Computer Architecture. IEEE, 2007. http://dx.doi.org/10.1109/hpca.2007.346199.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Pagh Nielsen, Mads, und Kim Sørensen. „Dynamic modeling of heat pumps for ancillary services in local district heating concepts“. In SIMS Conference on Simulation and Modelling SIMS 2020, September 22-24, Virtual Conference, Finland. Linköping University Electronic Press, 2021. http://dx.doi.org/10.3384/ecp2017639.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Furuvik, Nora C. I. S., Rajan Jaiswal und Britt M. E. Moldestad. „Comparison of experimental and computational study of the fluid dynamics in fluidized beds with agglomerates“. In SIMS Conference on Simulation and Modelling SIMS 2020, September 22-24, Virtual Conference, Finland. Linköping University Electronic Press, 2021. http://dx.doi.org/10.3384/ecp20176414.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Meenakshi, T., und B. N. Rao. „On Comparison of Various Formulations for Evaluation of Dynamic SIFs in FGMs“. In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93755.

Der volle Inhalt der Quelle

Annotation:

This paper presents three interaction integrals for calculating dynamic stress-intensity factors (SIFs) for a crack in two-dimensional functionally graded materials of arbitrary geometry. The method involves the finite element discretization, where the material properties are smooth functions of spatial co-ordinates and three interaction integrals for mixed-mode dynamic fracture analysis. These integrals can also be implemented in conjunction with other numerical methods, such as meshless method, boundary element method, and others. Numerical examples involving mixed-mode problems are presented to evaluate the accuracy of dynamics SIFs calculated by the proposed interaction integrals. Comparisons have been made between the dynamic SIFs predicted by the proposed three interaction integrals and available reference solutions in the literature, generated either analytically or by finite element method using various other fracture integrals or analyses. An excellent agreement is obtained between the results of the proposed interaction integrals and the reference solutions.

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Oppegård, Emil, Asanthi Jinasena, Anders Hammer Strømman, Jon Are Suul und Odne Stokke Burheim. „Study of an Industrial Electrode Dryer of a Lithium-Ion Battery Manufacturing Plant: Dynamic Modeling“. In SIMS Conference on Simulation and Modelling SIMS 2020, September 22-24, Virtual Conference, Finland. Linköping University Electronic Press, 2021. http://dx.doi.org/10.3384/ecp2017677.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Berichte der Organisationen zum Thema "Dynamická SIMS"

Winter, L. SIM Grid Star Observations: Astrometry With a New High Dynamic Range Imaging Device. Fort Belvoir, VA: Defense Technical Information Center, März 2000. http://dx.doi.org/10.21236/ada435793.

Der volle Inhalt der Quelle

APA, Harvard, Vancouver, ISO und andere Zitierweisen

Wir bieten Rabatte auf alle Premium-Pläne für Autoren, deren Werke in thematische Literatursammlungen aufgenommen wurden. Kontaktieren Sie uns, um einen einzigartigen Promo-Code zu erhalten!