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1
Heßke, Holger. "Car-Parrinello Moleküldynamik-Simulationen zur Hydratisierung und Protonierung von Aminen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2008. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1200758724333-78070.
Full textAbstract:
Ziel dieser Arbeit war die Untersuchung des Hydratationsverhaltens von alkylsubstituierten Aminen und deren korrespondierenden Ammoniumionen mit Hilfe von Car-Parrinello-Moleküldynamik Simulationen (CPMD). Dabei konnten Fragestellungen hinsichtlich der Koordinationszahlen, des Lösungsmittelaustausches und der molekülspezifischen pKB-Werte beantwortet werden. Des Weiteren lässt die Arbeit Aussagen über einen Zusammenhang von Hydratation und anormaler Basiszitätsreihenfolge der Amine zu und ermöglicht zusätzlich die Beschreibung von Systemen mit mehreren Aminfunktionen durch die Anwendung der gewählten Bedingungen. Zur Simulation des Hydratationsverhaltens wurden Wasser enthaltende Lösungsmittelboxen erstellt, bei denen das zu untersuchende Molekül zentral angeordnet war. Nach dem Ausschluss dimensionsabhängiger Effekte durch die Equilibrierung auf Grundlage einer kraftfeldbasierten Moleküldynamik, konnte eine geeignete Boxgröße bestimmt werden, die neben der Berechnung der ersten Hydratationssphäre auch die Beschreibung einer möglichen zweiten Hydratationssphäre erlaubt. Anhand der erhaltenen CPMD-Trajektorien aus den erfolgreichen Simulation wurden Verteilungsfunktionen berechnet. Der Vergleich dieser Ergebnisse mit experimentell bekannten Werten und Berechnungen an reinem Wasser zeigte, dass das System real vorliegende Bedingungen wiedergibt. Die ermittelten gNO(r) -Verteilungsfunktionen der Amine bzw. deren korrespondierender Ammoniumionen weisen signifikante Unterschiede auf und spiegeln einen grundsätzlich verschiedenen Aufbau der Hydratationssphären wieder. Dabei besitzen alle freien Amine eine starke Wasserstoffbrückenbindung unter Einbeziehung des freien Elektronenpaares am Stickstoffatom, während sich an den Aminwasserstoffatomen nur sehr schwache Wechselwirkungen beobachten ließen. Abgesehen vom Trimethylamin sind die Hydratationssphären der Amine wenig strukturiert und der Wasseraustausch zwischen erster und zweiter Hydratationssphäre verläuft sehr schnell. Im Gegensatz dazu ist die Umgebung der Ammoniumionen stark strukturiert. Alle Ammoniumwasserstoffatome sind in Wasserstoffbrückenbindungen einbezogen und es existiert ein vergleichsweise langlebiger Käfig aus Wassermolekülen um das Ammoniumion. Zusätzlich befindet sich zeitweise ein weiteres, wesentlich mobileres Wassermolekül in der ersten Hydratationssphäre, das in der Lage ist einen Wasseraustausch einzuleiten. Dabei konnten für das Ammoniumion und das Methylammoniumion konkrete Mechanismen des Wasseraustausches bestimmt werden. Die Berechnung der pKB- bzw. pKA -Werte für die untersuchten Systeme war ein weiterer Bestandteil der Arbeit. Dazu wurde ein statistischer Ansatz zur Ermittlung der freien Energie herangezogen, bei dem die Mittelwerte der Verteilungsfunktionen verwendet werden, so dass die zu erwartende Genauigkeit eng mit der Simulationszeit verknüpft ist. Auf Grundlage von Strukturoptimierungen an Ammoniumionen, die mit wenigen Wassermolekülen umgeben waren, konnten unter Variation der NH-Bindungslängen Energiegradienten ermittelt werden, die eine Aussage über die möglichen Übergangszustände bei der Deprotonierung lieferten. Als gute Näherung des Übergangszustandes kann demnach für alle Methylammoniumionen eine NH-Bindungslänge von 1,22 Ǻ in Betracht gezogen werden. Mit Hilfe dieser Bindungslänge wurde die Wahrscheinlichkeit der Deprotonierung für alle Ammoniumionen berechnet, wobei Simulationen bei denen ein spontaner Protonenübergang auftrat keine Berücksichtigung fanden. Die Ergebnisse der methylsubstituierten Amine zeigen eine gute Übereinstimmung mit den experimentellen Werten mit einer Abweichung von maximal +0,3 pK-Einheiten. Diese Abweichung entspricht in etwa 1,5 kJ/mol, was für theoretische Arbeiten einen sehr kleinen Fehler darstellt. Auf Grund der gewählten Bedingungen ist beim Ammoniumion die Wahrscheinlichkeit für die Deprotonierung unterschätzt wurden. Dadurch ist der entsprechende pKB -Wert kleiner als der experimentell ermittelte Wert. Im Verlauf der Arbeit konnte weiterhin gezeigt werden, dass das Verfahren und die gewählten Bedingungen auch für ethylsubstituierte Alkylamine und deren korrespondierende Ammoniumionen angewendet werden können. Die Genauigkeit der Ergebnisse hängt dabei hauptsächlich von der Simulationszeit ab. Ein entscheidender Punkt der Arbeit ist der Nachweis, das mit Hilfe dieser Moleküldynamik-Simulationen auch Moleküle mit mehreren Aminfunktionen berechnet werden können. Es ist somit möglich Differenzierungen in der Protonierung und Hydratation der einzelnen Aminfunktionen vorherzusagen.
2
Heßke, Holger. "Car-Parrinello Moleküldynamik-Simulationen zur Hydratisierung und Protonierung von Aminen." Doctoral thesis, Technische Universität Dresden, 2007. https://tud.qucosa.de/id/qucosa%3A24040.
Full textAbstract:
Ziel dieser Arbeit war die Untersuchung des Hydratationsverhaltens von alkylsubstituierten Aminen und deren korrespondierenden Ammoniumionen mit Hilfe von Car-Parrinello-Moleküldynamik Simulationen (CPMD). Dabei konnten Fragestellungen hinsichtlich der Koordinationszahlen, des Lösungsmittelaustausches und der molekülspezifischen pKB-Werte beantwortet werden. Des Weiteren lässt die Arbeit Aussagen über einen Zusammenhang von Hydratation und anormaler Basiszitätsreihenfolge der Amine zu und ermöglicht zusätzlich die Beschreibung von Systemen mit mehreren Aminfunktionen durch die Anwendung der gewählten Bedingungen. Zur Simulation des Hydratationsverhaltens wurden Wasser enthaltende Lösungsmittelboxen erstellt, bei denen das zu untersuchende Molekül zentral angeordnet war. Nach dem Ausschluss dimensionsabhängiger Effekte durch die Equilibrierung auf Grundlage einer kraftfeldbasierten Moleküldynamik, konnte eine geeignete Boxgröße bestimmt werden, die neben der Berechnung der ersten Hydratationssphäre auch die Beschreibung einer möglichen zweiten Hydratationssphäre erlaubt. Anhand der erhaltenen CPMD-Trajektorien aus den erfolgreichen Simulation wurden Verteilungsfunktionen berechnet. Der Vergleich dieser Ergebnisse mit experimentell bekannten Werten und Berechnungen an reinem Wasser zeigte, dass das System real vorliegende Bedingungen wiedergibt. Die ermittelten gNO(r) -Verteilungsfunktionen der Amine bzw. deren korrespondierender Ammoniumionen weisen signifikante Unterschiede auf und spiegeln einen grundsätzlich verschiedenen Aufbau der Hydratationssphären wieder. Dabei besitzen alle freien Amine eine starke Wasserstoffbrückenbindung unter Einbeziehung des freien Elektronenpaares am Stickstoffatom, während sich an den Aminwasserstoffatomen nur sehr schwache Wechselwirkungen beobachten ließen. Abgesehen vom Trimethylamin sind die Hydratationssphären der Amine wenig strukturiert und der Wasseraustausch zwischen erster und zweiter Hydratationssphäre verläuft sehr schnell. Im Gegensatz dazu ist die Umgebung der Ammoniumionen stark strukturiert. Alle Ammoniumwasserstoffatome sind in Wasserstoffbrückenbindungen einbezogen und es existiert ein vergleichsweise langlebiger Käfig aus Wassermolekülen um das Ammoniumion. Zusätzlich befindet sich zeitweise ein weiteres, wesentlich mobileres Wassermolekül in der ersten Hydratationssphäre, das in der Lage ist einen Wasseraustausch einzuleiten. Dabei konnten für das Ammoniumion und das Methylammoniumion konkrete Mechanismen des Wasseraustausches bestimmt werden. Die Berechnung der pKB- bzw. pKA -Werte für die untersuchten Systeme war ein weiterer Bestandteil der Arbeit. Dazu wurde ein statistischer Ansatz zur Ermittlung der freien Energie herangezogen, bei dem die Mittelwerte der Verteilungsfunktionen verwendet werden, so dass die zu erwartende Genauigkeit eng mit der Simulationszeit verknüpft ist. Auf Grundlage von Strukturoptimierungen an Ammoniumionen, die mit wenigen Wassermolekülen umgeben waren, konnten unter Variation der NH-Bindungslängen Energiegradienten ermittelt werden, die eine Aussage über die möglichen Übergangszustände bei der Deprotonierung lieferten. Als gute Näherung des Übergangszustandes kann demnach für alle Methylammoniumionen eine NH-Bindungslänge von 1,22 Ǻ in Betracht gezogen werden. Mit Hilfe dieser Bindungslänge wurde die Wahrscheinlichkeit der Deprotonierung für alle Ammoniumionen berechnet, wobei Simulationen bei denen ein spontaner Protonenübergang auftrat keine Berücksichtigung fanden. Die Ergebnisse der methylsubstituierten Amine zeigen eine gute Übereinstimmung mit den experimentellen Werten mit einer Abweichung von maximal +0,3 pK-Einheiten. Diese Abweichung entspricht in etwa 1,5 kJ/mol, was für theoretische Arbeiten einen sehr kleinen Fehler darstellt. Auf Grund der gewählten Bedingungen ist beim Ammoniumion die Wahrscheinlichkeit für die Deprotonierung unterschätzt wurden. Dadurch ist der entsprechende pKB -Wert kleiner als der experimentell ermittelte Wert. Im Verlauf der Arbeit konnte weiterhin gezeigt werden, dass das Verfahren und die gewählten Bedingungen auch für ethylsubstituierte Alkylamine und deren korrespondierende Ammoniumionen angewendet werden können. Die Genauigkeit der Ergebnisse hängt dabei hauptsächlich von der Simulationszeit ab. Ein entscheidender Punkt der Arbeit ist der Nachweis, das mit Hilfe dieser Moleküldynamik-Simulationen auch Moleküle mit mehreren Aminfunktionen berechnet werden können. Es ist somit möglich Differenzierungen in der Protonierung und Hydratation der einzelnen Aminfunktionen vorherzusagen.
3
Wang, S. Q. "Car-Parrinello Molecular Dynamics of Nanosized Graphene Sheets." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35242.
Full textAbstract:
Car-Parronello molecular dynamics simulations of twelve nanosized graphene sheets with a dozen to a hundred carbon atoms are performed using a mixed Gaussian and planewave approach within the frame-work of the density-functional theory. Two different origins for the rippled structure of graphene are found: the thermodynamic vibration of atoms and the local lattice defect. We suggest that the lattice defect, which changes the local atomic bonding state, should be responsible for the intrinsic ripples in graphene sheet.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35242
4
Patel, Chandan. "Hybrid molecular simulations of oxidative complex lesions." Thesis, Lyon, École normale supérieure, 2013. http://www.theses.fr/2013ENSL0835.
Full textAbstract:
L'ADN est en permanence exposé à un grand nombre d'événements dommageables déclenchées par des agents endogènes et exogènes. De nombreux travaux expérimentaux ont fourni des informations cruciales sur les propriétés structurelles et la réparation de certains des lésions de l'ADN. Cependant, il manque une vision mécanistique ou énergétique sur leur formation. La biochimie computationnelle a émergé comme un outil puissant pour comprendre les réactions biochimiques et les propriétés électroniques de systèmes complexes.Dans cette thèse, nous étudions la formation de lésions complexes intra-brin et inter-brin. Ces lésions tandem constituent une puissant menace à l'intégrité du génome, en raison de leur haute fréquence mutagenique. Tout d'abord, nous discutons l'attaque d'une liaison covalente entre un radical pyrimidinique. En comparant avec les bases isolees, nos simulations hybrides Car-Parrinello demontrent que la reactivité de la thymine et de la cytosine radicalaires sont inversees dans l'environnement B-helical. De plus, nos resultats montrent egalement une deformation plus importante pour la lesion G[8-5]C.Nous rationalisons également la plus grande réactivité des cytosines par rapport aux purines vers la formation multi-etapes de lésions complexes inter-brins par condensation avec un site C4' abasique. Ces résultats bases sur des simulations avec solvatation explicite et combines a la théorie de la fonctionnelle de la densité sont en accord avec les données expérimentalesDNA is continuously exposed to a vast number of damaging events triggered by endogenous and exogenous agents. Numerous experimental studies have provided key information regarding structural properties of some of the DNA lesions and their repair. However, they lack in mechanistic or energetic information pertaining to their formation. Computational Biochemistry has emerged as a powerful tool to understand biochemical reactions and electronic properties of large systems.In this thesis we study the formation of inter- and intra-strand cross-links. These tandem lesions pose a potent threat to genome integrity, because of their high mutagenic frequency. First, we discuss the formation of complex defects which arise from the attack of a pyrimidine radical onto guanine. In comparison with the reactivity of isolated nucleobases, our hybrid Car-Parrinello Molecular Dynamics simulations reveal that the reactivity of hydrogen-abstracted thymine and cytosine is reversed within a B-helix environment. Further, our data also suggest a more severe distortion of the B-helix for G[8-5]C.Second, we rationalize the higher reactivity of cytosine vs. purines toward the multistep formation of inter-strand crosslinks with a C4' oxidized a basic site, which is in qualitative agreement with experiments on isolated nucleobases, using explicit solvent simulations combined to density functional theory
5
Coiffier, Claire. "Approche Top-down pour la synthèse de substrats biologiquement actifs : analyse des conformations préférentielles de C-furanosides à l'aide de la chimie théorique." Thesis, Reims, 2011. http://www.theses.fr/2011REIMS021/document.
Full textAbstract:
Dans notre laboratoire rémois, le travail sur les sucres est à la base de toutes les recherches, que ce soit pour la synthèse de molécules d'intérêt biologique telles que des analogues du KRN 7000 (un glycolipide présentant une activité antitumorale), ou encore la mise en place de stratégies de synthèse (avec par exemple la stratégie NOE : addition nucléophile stéréosélective suivie d'une ouverture intramoléculaire régiosélective d'un époxyde). Mon trravail a consisté à étudier la flexibilité, et donc les conformations stables ou moins stables, de petites molécules que sont les C-furanosides, le but étant d'établir un certain nombre de règles permettant d'anticiper les questions concernant à la fois l'entrée et la pose de la structure dans un site actif. J'ai donc débuté avec une étude théorique dans le vide, puis j'ai considéré le milieu solvaté, l'objectif à long terme étant la prise en compte d'un site actif. Durant ces études, jai aussi eu la possibilité de réaliser un certain nombre de travaux en synthèse organique, allant jusqu'à l'établissement d'une voie de synthèse vers différents C-furanosides possédant un bras alcyne pouvant être personnalisé par notre partenaire lyonnais via une réaction de chimie click, pour la synthèse de molécules actives contre le diabèteIn our laboratory (in Reims), working on sugars is the base of all researches, whether for biologically interesting molecules synthesis as analogues of KRN 7000 (a glycolipid showing antitumor effects), or for the development of strategies for synthesis (for example the NEO stragegy : stereoselective nucleophilic addition followed by a regioselective intramolecular epoxide opening). My work was about studying the flexibility, and consequently stable and less stable conformations of small molecules : C-furanosides, the aim being the establishment of several rules anticipating the questions concerning the entry and the pose of the structure in an active site. So I have started with a theoretical study in vacuum, then I have considered solvation. The long term goal being the consideration of an active site. During these stdies, I have also realized several works in the field of organic chemistry, going to the establishment of a synthetic pathway to different C-furanosides with an alkyne arm, which could be functionalized by our partner (in Lyon) with a click reaction, for the synthesis of bioactive molecules against diabetes
6
Dupuis, Romain. "Calculs réalistes du fractionnement isotopique du silicium et du lithium pour des équilibres impliquant des phases liquides." Toulouse 3, 2014. http://thesesups.ups-tlse.fr/2732/.
Full textAbstract:
Le fractionnement des isotopes est utilisé comme marqueur d'évènements géochimiques pour de multiples applications. Les calculs permettent d'expliquer et de quantifier les mécanismes de fractionnement pour des conditions parfois difficiles à atteindre expérimentalement ; ils permettent de décomposer les mécanismes sous-jacents responsables du fractionnement mesuré. Au cours de cette étude, nous nous sommes intéressés aux isotopes du silicium - dans le quartz, la kaolinite, H4SiO4,aq et H3SiO4,aq - et du lithium - dans Li2O, la polylithionite et Li+ en solution. Nous avons mis en place des approches pour réaliser des calculs réalistes et, si possible, prédictifs afin de comprendre des fractionnements isotopique à l'équilibre impliquant au moins une phase liquide. D'une part, nous avons montré l'importance de la prise en compte du désordre configurationnel dans les liquides. D'autre part, nous avons montré qu'il est crucial de prendre en compte de l'anharmonicité, particulièrement pour l'étude d'un équilibre entre un minéral et une solution. Les résultats présentés dans ce manuscrit sont en bon accord avec les facteurs de fractionnement isotopique mesurés sur des échantillons naturels ou expérimentaux, ce qui met en avant l'intérêt d'utiliser ces nouvelles méthodesPlentiful applications of isotopes recently emerged in geology since the isotopic fractionation properties are markers of geochemical events. With calculations, one can explain and quantify a fractionation mechanism in conditions that can be challenging to achieve experimentally. Therefore, it is possible to decompose underlying mechanisms that lead to a measured fractionation factor. In the course of this study, we were interested in isotopes of silicon - in quartz, kaolinite, H4SiO4,aq and H3SiO4,aq - and of lithium - in Li2O, polylithionite and Li+ in solution. We took up methods that are well suited to perform realists and, if possible, predictive calculations for equilibriums implying at least one liquid phase. This study highlights the importance of the configurational disorder in liquids. We pointed at the necessity to take into account the effects of anharmonicity, in particular for the study of equilibria between a mineral and a solution. Moreover, results showed in this manuscript are in good agreement with the experimental and natural data that have been measured, which features the interest of these new methods
7
Merchant, Alexander Raymond. "An investigation of carbon nitride." Thesis, The University of Sydney, 2001. http://hdl.handle.net/2123/832.
Full textAbstract:
This thesis employs experimental and theoretical methods to characterise carbon nitride solids and proposes a generalstructural model for amorphous carbon nitride (a-C:N). It finds that a-C:N deposited by several methods is essentially identical, with similar bonding environments for carbon and nitrogen atoms. Using evidence from several techniques, the saturation of nitrogen in an sp2 carbon matrix is discussed. The experimental studies on a range of carbon nitride solids show no evidence for a crystalline form of carbon nitride. In addition to the experimental characterisation of a-C:N, ab initio molecular dynamics were used to investigate bonding and structure in carbon nitride. These simulations show that the most common form of nitrogen bonding was three-fold sites with a lone pair of electrons. Two-fold nitrogen sites were also found in agreement with experimental findings. An increase of nitrogen in a-C:N decreases the sp3-carbon fraction, but this is not localised on the nitrogen and the effect is most severe at high densities. A simulation of a low density/high nitrogen content network shows that the nitrogen saturation seen experimentally may be due to the formation of N2 dimers and C-N molecules which are easily driven out of the structure. The ab initio simulations also explore the nature of charged nitrogen and carbon sites in a-C:N. An analysis based on Wannier Function centres provided further information about the bonding and allowed for a detailed classification of these sites. The removal of electrons from the networks caused structural changes that could explain the two-state conductivity in ta-C:N memory devices. Finally, a theoretical study of the electron energy-loss near-edge structure (ELNES) calculated using multiple scattering theory is presented. The calculated ELNES of diamond, graphite and boron, silicon and carbon nitride structures compare well to experiment and supports the experimental finding that no crystalline carbon nitride had (or has) been produced. These ELNES calculations will however, provide a means of identifying crystalline beta-C3N4 should it be synthesised.
8
Merchant, Alexander Raymond. "An investigation of carbon nitride." University of Sydney. Physics, 2001. http://hdl.handle.net/2123/832.
Full textAbstract:
This thesis employs experimental and theoretical methods to characterise carbon nitride solids and proposes a generalstructural model for amorphous carbon nitride (a-C:N). It finds that a-C:N deposited by several methods is essentially identical, with similar bonding environments for carbon and nitrogen atoms. Using evidence from several techniques, the saturation of nitrogen in an sp2 carbon matrix is discussed. The experimental studies on a range of carbon nitride solids show no evidence for a crystalline form of carbon nitride. In addition to the experimental characterisation of a-C:N, ab initio molecular dynamics were used to investigate bonding and structure in carbon nitride. These simulations show that the most common form of nitrogen bonding was three-fold sites with a lone pair of electrons. Two-fold nitrogen sites were also found in agreement with experimental findings. An increase of nitrogen in a-C:N decreases the sp3-carbon fraction, but this is not localised on the nitrogen and the effect is most severe at high densities. A simulation of a low density/high nitrogen content network shows that the nitrogen saturation seen experimentally may be due to the formation of N2 dimers and C-N molecules which are easily driven out of the structure. The ab initio simulations also explore the nature of charged nitrogen and carbon sites in a-C:N. An analysis based on Wannier Function centres provided further information about the bonding and allowed for a detailed classification of these sites. The removal of electrons from the networks caused structural changes that could explain the two-state conductivity in ta-C:N memory devices. Finally, a theoretical study of the electron energy-loss near-edge structure (ELNES) calculated using multiple scattering theory is presented. The calculated ELNES of diamond, graphite and boron, silicon and carbon nitride structures compare well to experiment and supports the experimental finding that no crystalline carbon nitride had (or has) been produced. These ELNES calculations will however, provide a means of identifying crystalline beta-C3N4 should it be synthesised.
9
Bouzid, Assil. "First-principles investigation of binary and ternary amorphous chalcogenide systems." Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAE029/document.
Full textAbstract:
Ce travail de thèse s’inscrit dans le cadre d'études théoriques ayant pour but l’établissement de la structure des chalcogénures binaires et ternaires sous différentes conditions thermodynamiques. Des techniques de modélisation numérique ab-initio ont été employées. En particulier, nous avons utilisé la dynamique moléculaire par premiers principes selon l’approche de Car et Parrinello ainsi que sa version dite "deuxième génération". La première partie est consacrée à l’étude des chalcogénures binaires, notamment les verres GeSe2 et GeSe4 sous pression ainsi qu'à l’étude des effets des forces de van der Waals et des fonctionnelles d’échange et corrélation DFT sur la structure de l’amorphe GeTe4. Dans la deuxième partie, l’intérêt a été porté à l’étude d'un matériau à changement de phase récemment proposé par les expérimentateurs comme un bon candidat pour le stockage de données, le ternaire Ga4Sb6Te3This thesis reflects efforts toward an accurate understanding of the atomic scale structure of chalcogenide glasses. These compounds have an impact on electronics, optoelectronics and memory devices. I resorted to the most advanced first-principles molecular dynamics simulations such as the standard Car-Parrinello method as well as its second generation version. In the first part of this thesis we provide a detailed study of the topological changes undergone under pressure by glassy GeSe2 and by glassy GeSe4. Structural transition and bonding features are described and compared to the results of neutron and X-ray diffraction experiments. Furthermore, in the case of glassy GeTe4 we demonstrated that the inclusion of van der Waals forces leads to substantial improvements in the description of the structure. In the second part of this thesis, we established the atomic-scale organization of a promising candidate for phase change memory applications, glassy Ge4Sb6Te3
10
Holroyd, Leo. "Mutagenicity of 5-bromouracil : quantum chemical study." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/7063.
Full textAbstract:
This thesis describes a computational investigation of the mutagenicity of 5-bromouracil (BrU). In Chapter 1, three models of spontaneous and BrU-induced base mispairing (rare tautomer, wobble pair, and ion) are reviewed. Chapter 2 presents the computational techniques used: electronic structure methods (Hartree–Fock-based and density functional theory) and molecular dynamics. Chapter 3 presents optimisations of the keto and enol tautomers of BrU and uracil (U) in water clusters. The enol tautomer of BrU is found to be more stable than that of U. Chapter 4 is a molecular dynamics study of the keto-enol tautomerism of BrU and U in a periodic water box. The pKₐ of BrU at N3 is found to be lower than that of U. Chapter 5 is a study of stacked base dimers containing BrU, U, or thymine (T) stacking with natural bases. Some structures were taken from the Protein Data Bank, while others were generated using an in-house methodology. BrU is found to stack more strongly than T in vacuo, but solvation and thermal effects nullify this difference. Chapter 6 discusses the significance of the results in Chapters 3–5 in terms of BrU-induced mutagenesis. Appendices A and B–D provide supplementary material to Chapters 2 and 5, respectively. Appendix E is an investigation of the “base flipping” pathway of 2-aminopurine (2AP). Both 2AP/N and A/N dinucleosides (N = thymine or guanine) are found to adopt a wide range of energy-minimum conformations – not only stacked and “flipped”, but also intermediate – and the stacked are not the most favourable by free energy. Appendix F is a list of publications and papers in preparation. One publication concerns BrU stacking. The other is a conformational study of the dipeptide tyrosine-glycine: the theoretical results are shown to be consistent with experiment (R2PI spectra) if thermal effects are taken into account.
11
PIMENTEL, CECILIO JOSE LINS. "PERFORMANCE OF CPM AND CPM COMBINED WITH CONVOLUTIONAL CODES SYSTEMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1990. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=9263@1.
Full textAbstract:
Este trabalho apresenta o desenvolvimento de um modelo, em
tempo discreto, para a análise através de simulação em
computador digital do desempenho de um sistema de
comunicações móveis via satélite que utiliza modulação CPM
(Continuous Phase Modulation)
Esquemas que combinam códigos convolucional e CPM (CC/CPM)
foram também examinados. Estes sistemas, conforme se pode
observar, apresentam maior eficiência em termos da
utilização de faixa de freqüência e potência, com relação
ao esquema CPM puro. A seleção do esquema CC/CPM ótimo foi
realizada utilizando um algoritmo eficiente para o cálculo
da distância Euclideana mínima (d2min ). Novos códigos com
d2min melhores foram obtidos com o emprego do codificador
convolucional com realimentação.
Por fim é examinada a decodificação de esquemas
Codificador Convolucional/Modulador CPM combinados
utilizando-se o Algoritmo-M, um Algoritmo subótimo em que
a busca da seqüência transmitida é limitada. São
realizadas simulações com o Algoritmo-M e compara-se com o
Algoritmo ótimo (Algoritmo de Viterbi). Verifica-se que o
Algoritmo M é bastante mais eficiente que o Algoritmo de
Viterbi.This work presents a model for performance analysis of a Mobile Satellite Communication system which incorporates Continuous Phase Modulation (CPM) codes. The analysis is carried out by computer simulation, using a discrete-time baseband model of the communication system. The case of convolutional codes combined with CPM schemes (CC/CPM) is also examined. New codes CC/CPM with better minimum Euclidean distance were obtained with a feedback convolutional encoder. Comparison of CC/CPM and pure CPM, constrained to the same complexity, shows that the former has better performance. The performance of a system which uses CC/CPM schemes, over an additive white Gaussian noise (AWGN) channel, with M-algorithm decoding ( a limited search algorithm) is evaluated by computer simulation. The simulation results also corroborate the fact that the M- Algorithm is far more efficient than the Viterbi Algorithm.
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Montague, Nicholas Patrick. "Development of CPMV-based particle technology." Thesis, University of East Anglia, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439927.
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Suhail, Saad A. "CPM/LOB : new methodology to integrate CPM and line of balance." Thesis, Loughborough University, 1995. https://dspace.lboro.ac.uk/2134/25619.
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In 1963 the United States Federal Government established a Line of Balance Coordinating Committee to study LOB's applicability and its ties with network scheduling. Ever since many researchers and practitioners attempted to integrate the merits of CPM and LOB in graphical, operational research, and activity-dominated network scheduling. Nevertheless, the obstacles were not truly eliminated in a simple and practical way that was good enough to be accepted and adopted by the construction industry. This work presents CPM/LOB, a new methodology integrating both methods in a network context. It is simple to comprehend and apply using available commercial CPM computer programs, and does not require elaborate training. The method overcomes the vulnerability of CPM to changes in the sequence of work and inability to maintain work continuity for the working squads of the repetitive activities. It introduces float into LOB and revives LOB by creating access to it by commercially available and popular CPM packages. Several additional features are introduced to facilitate the management of planning and control of repetitive projects, such as identifying and quantifying progress that contradicts network logic, evaluating the effect of discrete activities, and measuring the progress regularity on multiple large housing contracts as well as single and small repetitive projects. The principles of the method have been published in Journal of Constructing Engineering and Management of the American Society of Civil Engineers in September 1994. Its practical application on projects in Kuwait and the United States is demonstrated by three case studies.
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Le, Roux Patrick. "Suites régulières d'impulsions radio-fréquence en résonance magnétique : applications à l'IRM." Paris 11, 2006. https://tel.archives-ouvertes.fr/tel-00128349.
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Les séquences d'impulsions radiofréquence régulièrement espacées en Résonance Magnétique Nucléaire peuvent être abordées par des algorithmes simples de type polynomial (transformée en Z). Une simplification supplémentaire est apportée par l'utilisation de spineurs pour caractériser les rotations. On présente, comme première application, un algorithme de type effeuillage permettant la synthèse d'impulsions radiofréquence sélectives continues, plus particulièrement utilisé en IRM. Cet algorithme permet de s'affranchir de la non linéarité des équations de Bloch. Quelques détails d'implémentation non publiés sont donnés ainsi que quelques compléments théoriques comme la convergence de l'approximation par train d'impulsions dures et la prédiction de l'énergie déposée. On utilise ensuite les mêmes outils pour donner un modèle simplifiée des séquences CPMG et SSFP. On considère la rotation d'écho à écho et on explique la stabilisation naturelle des signaux par la dispersion de phase. Une caractérisation simplifiée mais d'usage assez large des processus de relaxation lors de telles séquences est également donnée. Le lien entre un algorithme polynomial de stabilisation des signaux de la séquence CPMG et une version discrétisée du principe adiabatique est proposée. Enfin un dernier chapitre aborde une séquence non-CPMG, basée sur une modulation quadratique de la phase du train d'impulsions, qui permet de s'affranchir de la sensibilité à la phase initiale de la séquence CPMGRegular RF pulse trains used in NMR can be studied with simple algorithms of polynomial type using the Z transform. Another simplification is brought by the use of spinors to model the rotations. The first application presented is a ‘peel-off' algorithm which permits the synthesis of selective radiofrequency pulses as the ones used in MRI. This algorithm makes the non linearity of the Bloch equations easy to handle. Some unpublished implementation details are given along with some theoretical results concerning the convergence of the hard pulse train approximation and the prediction of the energy deposition. The same tools are subsequently used to obtain a simplified model of the CPMG and SSFP sequences. The echo to echo rotation is studied and the natural stabilization of the signals is explained by the dispersion of phase. The relaxation processes during such sequences are also modelled in a simplified but widely applicable manner. A previous polynomials stabilization algorithm is explained in terms of a discrete version of the adiabatic principle. The last chapter tackles with a non-CPMG sequence which is insensitive to the initial phase of the magnetization. This sequence is based on a quadratic phase modulation of the RF pulse train
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Lafos, Marcel. "Komplementationsstudien der cpd-Mutante und Analyse der CPD-Interaktionspartner mittels reverser Genetik." [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=978805313.
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Full, Jürgen. "Ultrafast photodissociation dynamics of j5-CpMn(CO)3 [Eta-5-CpMn(CO3)](Cymantrene) theory for analysis and control /." [S.l. : s.n.], 2002. http://www.diss.fu-berlin.de/2002/215/index.html.
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Bergquist, Frans. "CPM for RLS system." Thesis, Linköping University, Department of Electrical Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8950.
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The main goal of this thesis is to create a continuous phase modulated radio system with a recursive least square equalizer. The two tested channel models are typical urban and rural area. The result of the performance of this radio system is displayed in Matlab plots as the bit error rate. Three error rates are displayed; with error correction, without error correction and the rate of received incorrect message bursts. Conclusions are also drawn of the performance of the radio system in kbit/sec of bandwidth when the different channel models are used. The performance is also divided into how the equalizer handles inter symbol interference or a fading channel without inter symbol interference.
I detta examensarbete har ett fasmodulerat radiosystem simulerats, fokusering ligger på kanalutjämnare som är av typen recursive least square (RLS). RLS utjämnaren har testats med två olika gsm kanalmodeler, dels typical urban som simulerar radioförbindelser i stadsmiljö den andra modellen är rural area där sändare och mottagare kan se varandra. Tre olika resultat presenteras; med felrättande koder, utan felrättande koder och mängden icke korrekta datapaket. Slutsatser dras om radiosystemets bandbredd när de olika kanalmodellerna används vid olika brusmängd. Även utjämnarens förmåga att hantera inter-symbol interference och fading utvärderas också.
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Rothwell, Andrew Trevor. "Professionals, CPD and employability." Thesis, Loughborough University, 2004. https://dspace.lboro.ac.uk/2134/11574.
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This thesis presents the findings of a study of U.K. Human Resources professionals, and factors relating to their Continuing Professional Development or CPD. The study has investigated their attitudes to CPD (CPDV), what CPD they actually engage in (CPDE), and the statistical relationships between employability, CPD, and a number of biographical and attitudinal variables. As a subsidiary aim, the study developed and tested a scale of employability, as no appropriate measure was discovered prior to the field research being undertaken. While the respondents engaged in CPD, they did so for reasons of professional commitment rather than a concern for their employability, and that the CPD undertaken tended to be either informal or organisationally-driven. Examination of relationships between the study variables using multiple hierarchical regression saw biographical variables explain 4.1 % of the variance in the perceived value of CPD, and attitudinal variables a further 13.5%. Biographical variables explained 10.7% of the variance in employability, and attitudinal variables a further 30.3%. The study has concluded that professional organisations may have some way to go before they achieve the comprehensive engagement with CPD that may become (and is already in some organisations) mandatory, and that this gap relates to individual's self perceived needs in addition to aspects of record keeping and attitudes to the profession generally. More encouraging has been the development of a new measure of individual employability that compares well against the limited empirical literature in the field, and appears to be a distinct construct to SUbjective career success. Overall, the study has contributed to our understanding of professionals, their attitudes and values, and especially their attitude to and engagement with CPD. Although it was not an original aim, the development of the scale of individual employability may well turn out to be the principal theoretical and practical contribution of this research, as a concept that becomes part of a new paradigm of the psychology of work in the 21st century.
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Aljabali, Alaa Ahmed. "CPMV as synthon and template in bionanotechnology." Thesis, University of East Anglia, 2011. https://ueaeprints.uea.ac.uk/37403/.
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Mirsakiyeva, Amina. "Electronic and optical properties of conducting polymers from quantum mechanical computations." Doctoral thesis, KTH, Materialfysik, MF, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214979.
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Conductive polymers are also known as "organic metals" due to their semiconducting properties. They are found in a wide range of applications in the field of organic electronics. However, the growing number of experimental works is not widely supported with theoretical calculations. Hence, the field of conductive polymers is experiencing lack of understanding of mechanisms occurring in the polymers. In this PhD thesis, the aim is to increase understanding of conductive polymers by performing theoretical calculations. The polymers poly(3,4-ethylenedioxythiophene) (PEDOT) together with its selenium (PEDOS) and tellurium (PEDOTe) derivatives, poly(p-phenylene) (PPP) and naphthobischalcogenadiazoles (NXz) were studied. Several computational methods were applied for analysis of mentioned structures, including density functional theory (DFT), tight-binding modelling (TB), and Car-Parrinello molecular dynamics (CPMD) calculations. The combination of CPMD and DFT calculations was applied to investigate the PEDOT, PEDOS and PEDOTe. The polymers were studied using four different functionals in order to investigate the full picture of structural changes, electronic and optical properties. Temperature effects were studied using molecular dynamics simulations. Wide statistics for structural and molecular orbitals analysis were collected. The TB method was employed for PPP. The formation and motion of the excitations, polarons and bipolarons, along the polymer backbone was investigated in presence of electric and magnetic fields. The influence of non-magnetic and magnetic impurities was determined. The extended π-conjugated structures of NXz were computed using B3LYP and ωB97XD functionals in combination with the 6-31+G(d) basis set. Here, the structural changes caused by polaron formation were analyzed. The combined analysis of densities of states and absorption spectra was used for understanding of the charge transition.QC 20170928
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Luken, Raymond C. "Fracture behavior of CPM 10V." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/90974.
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The effect of three heat treatments on plane-strain fracture toughness (K Ic), fatigue crack growth rate (da/dN), and tensile behavior of a commercial powder metal alloy, CPM 10V, was investigated. Fracture toughness was increased by increasing the tempering temperatures and decreased by increasing the austenitizing temperature. These changes were related to changes in yield strength and the resulting crack tip plastic zone sizes. Fracture toughness resulting from any of the three heat treatments was inversely related to the hardness. Fatigue crack growth followed the Paris Law for some portion of the curve and crack growth exponents, n, were virtually unchanged by the heat treatment. The linear portion of the growth curve was shifted to higher stress intensity ranges for heat treatments yielding higher fracture toughness. Fatigue crack growth behavior in the high growth region was determined mainly by the fracture toughness of the specific heat treatment.M.S.
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Nash, Christopher. "AUTOMATIC MODULATION RECOGNITION FOR CPM." International Foundation for Telemetering, 2016. http://hdl.handle.net/10150/624250.
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This paper uses detection and estimation theory techniques for automatic modulation recognition
of CPM signals. The CPM signals of interest are PCM/FM, SOQPSK-TG, and ARTM/CPM. The
modulation recognition problem is formulated as a hypothesis test with the test statistic computed
using samples of the observed signal. Using such techniques, simulation results show that correct
modulation can be achieved error free at a carrier-to-noise ratio of 19 dB for PCM/FM, 50 dB for
SOQPSK-TG, and 25 dB for ARTM CPM.
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Janata, Pavel. "Možnosti CPM řešení v bankovnictví." Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-15494.
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This thesis addresses issues of measuring and managing the performance of commercial bank institutions by means of a system called Corporate Performance Management (CPM). The theoretical part of this work is devoted to introduction of banking industry and methods of performance measurement in commercial banks. It introduces a general concept and key components of CPM supported by Business Intelligence technology. In the practical part of this work there is introduced the design of two concrete CPM solutions which are being currently built in banks -- KPI processing and interest margin calculation. The main thesis contribution to the existing literature is a creation of complex material about relevant aspects of implementation CPM solutions in data warehouses of commercial banks and creation the conceptual design of a concrete solution.
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Tománek, Jiří. "Hodnocení CPM aplikací - analytických portálů." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-19157.
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This thesis is concerned with evaluation CPM applications -- Analytical Portals. Based on reading up the evaluation criteria from another authors in third chapter, are chosen own criteria for evaluation of application Microsoft Office SharePoint Server 2007, where are dashboards and reports created. The thesis consists of two general sections, theoretical and practical. The theoretical section describes division of CPM applications from particular vendors of software. In second chapter are explained the most important features of CPM applications and their submission into software portfolio particular vendors, which is the first target of this thesis. In the practical section are worked up the data of fictive company named Matastav into form, which is needed for creating dashboards and reports. After that in fourth chapter, are created dashboards and reports by software MOSS 2007. Here is explanation of the creation and of course the required hardware and software installation. The software and created dashboards and reports are evaluated in fifth chapter with own chosen criteria. That is the second target of this thesis.
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Hadjoudja, Abdelkader. "Macrogénération et prédiction temporelle sur les réseaux programmables CPLD." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0177.
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Cette these a essentiellement consiste a etudier la synthese et la generation de macros sur les cibles programmables hierarchique de type cpld. Cette etude porte surtout sur les operateurs arithmetiques de base (additionneurs, comparateur,. . . ). Il s'agit de choisir les architectures appropriees, de generer des equations parametrees, de mettre en place une optimisation utilisant au maximum les ressources specifiques des produits recents de ces composants (mach5 de vantis, et atf1500 d'atmel). Une facette importante de ce travail a concerne les predictions et evaluations temporelles incluant le lien entre l'optimisation et le plan de masse lors de l'implantation physique sur ces composants. Les resultats sont particulierement originaux.
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Senouci, Sid-Ahmed Benali. "Optimisation et prédiction temporelles sur les réseaux programmables CPLD." Ecully, Ecole centrale de Lyon, 1998. http://www.theses.fr/1998ECDL0051.
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L'avenement des technologies programmables au debut des annees 80 a marque l'evolution de la conception et du marche de l'electronique numerique. Cet essor exige des methodes de synthese et d'optimisation specifiques a chaque cible et a chaque architecture. C'est dans ce cadre, que cette these propose des methodes de manipulations booleennes et de floorplanning avec attention particuliere accordee aux aspects temporels. En effet, les contraintes des applications implantees sur les cibles cpld (complex programmable logic devices), sont d'ordre temporel. Outre la mise en oeuvre des dites methodes, l'estimation temporelle proposee n'a de valeur que si elle est credible. Pour cela, l'etude s'est etendue aux liens entre la synthese et le placement et routage. Les resultats experimentaux montrent que l'ensemble de l'approche forme un tout coherent, efficace et mathematiquement rigoureux. Les travaux presentes dans cette these font partie integrante des outils livres par les constructeurs de ces technologies a savoir atmel et vantis.
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Gajdošík, Petr. "Laboratorní přípravek pro vývoj aplikací obvodů CPLD firmy Altera." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219886.
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In this thesis I aim at a design of the laboratory kit and study ways how to programme CPLD devices made by Altera company. The product is used for development and demonstration of applications in CPLD devices made by Altera company. The kit is designed for Altera programming cables and Presto (made by ASIX). Input signals are implemented by a set of switches and buttons on the board. Output states are displayed by LED diods, possibly connected to multiplex the display. The user can connect to external devices via external inputs. Thesis is also aimed at the design PCB of the laboratory kit, subsequent production, recovery and verification of compatibility ALTERA and PRESTO programmers. End of the thesis aims on working with the Quartus II design environment. In particular, it is a guide to working with templates and simulation of VHDL designs.
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Wardle, Mason B. "A PAM Decomposition of Weak CPM." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd868.pdf.
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Tsiareshka, Siarhei G. "Vibrating CPD Chemical Degradation Oil Sensor." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/11636.
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Oil analysis is a broad field comprised of hundreds of individual tests that provide meaningful benefit by assessing one or more properties of lubricants or machines. Many tests are performed on new types of oil during research and development. The lubricants chemical, physical, or lubricating properties are validated for quality control purposes and product performance classification. Much of the research in this area is devoted to the online oil degradation systems which allow getting a prompt response about the condition of lubricant.
This thesis investigates the concept for monitoring oil degradation with a vibrating Kelvin probe technique. The Vibrating Kelvin probe method for measuring the work function of metals has been used since 1932. Among the applications of this technique are adsorption, corrosion, friction and other studies. A novel application of this method is proposed in this thesis. The vibrating Kelvin system was created with one static surface acting as a sampling surface and the other one electrically isolated. The interaction of the oil with one of the surfaces of a capacitor results in a signal which is synchronously measured. The oil molecules adsorb on the surface of one of the plates and form a space charge layer which changes the work function of that surface. Oil prepared by intentional oxidation was used to evaluate and to monitor the ability to see changes in oil.
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Flak, Kimberley. "Selinger's CPM construction and nuclear ideals." Thesis, University of Ottawa (Canada), 2006. http://hdl.handle.net/10393/27357.
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Monoidal categories have recently been seen to be appropriate structures for establishing abstract axioms for quantum physics. The tensor product in a monoidal category corresponds to the creation of a composite system obtained by joining two independent quantum systems. This correspondence is formalized in the work of Abramsky-Coecke and Selinger. From this point of view, the tensor product in a monoidal category is abstracting the tensor product of Hilbert spaces. The notion of a dagger compact closed category axiomatizes further structure in the Hilbert space category. In particular, the dagger is an abstraction of the familiar Hilbert adjoint. Peter Selinger associates to each dagger compact closed category C its category of completely positive maps, denoted CPM(C). He proves that the resulting category is again a dagger compact closed category. We seek a similar result for tensored †-categories equipped with nuclear ideals.
We establish an appropriate notion of completely positive maps in a nuclear ideal. We then define a CPM construction for tensored †-categories equipped with nuclear ideals. Analogous to Selinger's construction, given a nuclear ideal N for a tensored †-category C, our construction yields its category of completely positive maps, CPMN(C). We prove that CPM N(C). is again a tensored †-category. In the process, we also verify that our completely positive maps properly extend Selinger's notion of CPMs. In particular, they preserve nuclear-positive matrices, which are generalizations of von Neumann's positive density operators. As well, we characterize the completely positive maps for the nuclear ideal of Hilbert-Schmidt operators for Hilb and the nuclear ideal of finite relations for LFR. Our construction abstracts the passage from finite-dimensional Hilbert spaces to the category of all Hilbert spaces.
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Ong, Irene. "CPD for teachers and effective schools." Thesis, Durham University, 2004. http://etheses.dur.ac.uk/3098/.
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Purpose: In Singapore, serious attempts have been made by the Government to develop a many layered, multi-faceted response, changing and adapting to shape long-term and productive responses. Another major societal change that gives impetus to teachers’ staff development in Singapore is the changing scene of Singapore society in terms of social structure, norms, aspirations, behaviours and values. All these mean that Singapore teachers will need to assume responsibility to grow as adult learners by participating actively in different types of CPD activities (Formal, Informal, Self-Directed and Nonformal Activities), to change their mindsets, to think, and to tailor solutions with Principals to school problems in order to succeed in their role as lifelong learners and change agents. The main purpose of this study is to find out teachers' needs, and school and CPD factors that influence their participation in CPD. It is also intended that the empirical data from schools can be integrated with findings from literature, together with the personal philosophy of the writer, into a comprehensive and effective school programme that meets the needs of Singapore primary schools in the 21st century. Design of the Study: The instrument that was used to collect data was self-constructed and designed with input from teachers and information gathered about CPD from literature. Part Two No 2 (1) was adapted from the 'Assessment of Performance of Teaching' (NIE) and from the instrument that was self-developed by the researcher for her M Ed paper (University of Sheffield, 1999) on 'An Induction Programme for Beginning Teachers in Singapore Primary Schools'. The Role of Principals scale and the CPD Activities scale were adapted from readings by Wideen and Andrews (1987) and an instrument used by Fesslar (1990) for his study on Principal and teacher behaviours towards CPD activities. The rest of the questionnaire was self-constructed based on the researchers' literature review. The final questionnaire comprised three main measures: (1) Personal Factors Measure, (2) School Factors Measure, (3) CPD Activities Measure. Personal Factors Measure The Personal Factors Scale was developed to measure teachers' perceptions about their needs or skills by age, gender and years of teaching experience. This comprised thirty-six items on six aspects namely, planning, managing, instructional techniques, interaction, assessing and providing feedback and relations with community. Qualitative data was obtained through an open-ended item on teachers’ perceptions of Personal Qualities of Good Teachers. This would give added information on teachers' perceptions of needs (or skills) as well as knowledge, attitudes and values of teachers that can effectively manage the educational changes.
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Dewhirst, Claire. "Thinking practice : CPD as ethical work." Thesis, University of Stirling, 2013. http://hdl.handle.net/1893/19766.
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This study draws upon a methodological approach based on the use of objects to explore the experiences of a group of teachers undertaking a Masters-level Continuing Professional Development programme. Eight Respondents were invited to bring three objects to their interview that represented significant aspects of their practice in relation to the course. These objects afforded an exploration of respondents’ views, experiences and consideration of the impact of the programme on their professional identities. In order to engage analytically with the data the work draws upon notions of spatiality as well as the later work of Foucault on truth and subject formation. The thesis considers the role of professional learning as shaped by the current policy process and, how professional learning is, in turn, shaped by the teachers undertaking the course. Such a consideration allows for a methodological take on the CPD process as one whereby people, as well as objects, such as ‘standards’, play equally important roles. In drawing upon the later work of Foucault (1984a, 1984b) analysis of the data considered the ways in which the practices of the course that the teachers engaged with (Askēsis) lead to a desire to speak their mind and express ideals of truth about educational practice (Parrhēsia). This means that in thinking about their practice through the activities and processes of the programme encourages the development of the ethical work of the teacher. In the light of such problematisation, this study encourages a rethinking of both policy and practice and argues for a change in the discourse of education from the concept of professional development to that of professional learning within a relational and ethical framing.
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Perrins, Erik. "AN ALTERNATE PROPOSAL FOR ARTM CPM." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/605802.
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International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, CaliforniaSince the Advanced Range Telemetry (ARTM) program first proposed the use of multi-h continuous phase modulation (ARTM CPM), there has been much work done to characterize the performance of this waveform. The ideal performance of ARTM CPM is well understood and has been shown to be close to that of PCM/FM and the Tier I modulations (FQPSK-B and SOQPSK). In practice, however, ARTM CPM is very sensitive to phase noise at the receiver and also requires very long synchronization times. These difficulties can be addressed with additional link margin. In this paper we propose an alternate set of modulation indexes which are approximately 2 dB superior in performance with respect to the original set (we use minimum distance concepts to characterize the performance of each set). Brief consideration is also given to frequency pulses other than the existing raised cosine (RC) pulse. We also characterize the effect these new parameters have on the signal spectrum. This 2 dB gain gives ARTM CPM some of the system flexibility currently enjoyed by PCM/FM and the Tier I modulations. One such option is to realize this 2 dB gain using low-complexity coherent detection schemes, which we demonstrate; we also show a noncoherent detection scheme that performs within 2 dB of optimum (or in other words, it has the same performance as the existing coherent detector for ARTM CPM). This is significant since noncoherent detection avoids some of the synchronization burdens that have plagued ARTM CPM thus far.
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Koucký, Jiří. "CPM a zavedení dashboardingu v praxi." Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-15555.
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Corporate Performance Management (CPM) is a broad concept focused on managing performance of companies and is related to information technologies like Business Intelligence (BI). CPM and its associated technologies are currently one of the most tracked areas in the field of business informatics. The reason is the growing market competition, globalization, the dynamic changes on the market and the growing need for companies to effectively manage their performance. The aim of the theoretical part of the thesis is to familiarize readers with this concept, with its components and link to business informatics. The work focuses on a specific area of CPM, which is monitoring and analysis, i.e. dashboarding. In the thesis there is analyzed monitoring and analytical functionality of the software Microsoft Office PerformancePoint Server 2007 (PPS). Furthermore, there are identified dashboard and scorecard concepts and analyzed the characteristics and categorization of dashboards. There are various best-practices approaches to deployment of dashboarding into business. In the thesis there are mentioned some of these practices and basic rules for proper dashboard design. At the end of the theoretical part of the thesis there are evaluated the world's leading suppliers of CPM solutions. The aim of the practical part of the thesis is design and documentation of CPM dashboarding solution based on the real business data of the company that provides consulting services and develops BI software. The solution is designed in the PPS software and its purpose is to support the company's management in terms of monitoring the effectiveness of internal and external projects and business activities of the company. The solution is not a definitive CPM solution, but a step by the company to reveal possible weaknesses in the organization and encourage efforts to develop its own holistic CPM solution.
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Pokorný, Jiří. "What-if analýza v nástroji CPM." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-76062.
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This thesis deals with the management approach in performance management, today known world by the concept of Corporate Performance Management. CPM describes the relationship to Business Intelligence and methodologies, processes, metrics and technologies that together form the concept. There is also a description of CPM applications which cover the five most commonly deployed areas. The second part is devoted to what-if analysis that is one of several methodologies which are part of the CPM package. It also contains the list of competing tools that cover this area. The following hypothetical example of putting what-if analysis, aimed at resolving issues of fictitious company, related to costs, revenue and profit. Example is based on technology developed at IBM Cognos TM1. During the example solutions are presented with all the basic functionality that this technology offers.
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Rubáš, Jan. "Řešení controllingových úloh na platformě CPM." Master's thesis, Vysoká škola ekonomická v Praze, 2011. http://www.nusl.cz/ntk/nusl-85259.
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This work deals with the principles and methods of executing common managerial accounting tasks using Corporate Performance Management tools and technologies. The aim of the work is to analyze different practices, compare them and assess them against non-CPM solutions, especially ERP and spreadsheet solutions. The selection of tasks is based on a survey conducted among Czech companies and includes planning, budgeting, cost allocations and variance analysis. Conclusions are derived from the managerial accounting theory, fundamental works of Business Intelligence and personal experience gained through twelve CPM implementation projects. The conclusions are mostly platform-independent since functionality of several diverse CPM products is taken into account. The work highlights not only advantages but also restrictions of CPM tools and technologies. Many of the conclusions can be directly applied in practice. Work may be beneficial especially for business consultants and for companies considering the implementation of CPM.
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Watters, Gráinne. "Understanding and creating CPD for and with teachers : the development and implementation of a model for CPD." Thesis, University of Newcastle upon Tyne, 2014. http://hdl.handle.net/10443/2577.
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This document consists of a Systematic Review, a Bridging Document and an Empirical Research report. The Systematic Review explores continuing professional development available to teachers, in particular considering what supports teachers to continually develop their practice. Taking a meta-ethnography approach the review examined seven studies. Synthesis and consequent mapping indicated three third order constructs necessary for teachers’ professional learning to occur; intersubjectivity, reflection and common goal. The review led to the development of a model with three overlapping constructs, needed for such professional learning to occur. The Bridging Document links the Systematic Review findings to the Empirical Research, giving critical justification for how and why decisions were made. It includes exploration of research foci, theoretical paradigm, methodology and analysis. A discussion of how ethics, reflexivity, ontology and epistemology are embedded throughout helps the reader further understand the research. In chapter three the Systematic Review model was used to plan an intervention for teachers. Action Research was carried out with four Heads of House. Semi-structured interviews were used before and after the Action Research cycles to explore the Heads of House experience. This intervention led to transformative learning for the group and analysis suggests that although the Systematic Review model is valid it is a dynamic interaction rather than a static model. Also it includes two additional themes – trust and otherness. The main findings were the change in talk from pre to post interview which highlighted a difference in agentic resources individually and collectively. Implications include highlighting the unique contribution educational psychologists can make and how teachers’ sense of agency can increase through collaborative problem solving. Possible future research is also explored.
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Toma, Daniela. "Análise da qualidade de óleos vegetais em sementes intactas por RMN de baixa resolução." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/75/75132/tde-26082009-093633/.
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O biodiesel vem sendo usado como uma alternativa ao diesel com vantagens ambientais. No entanto, existem duas questões que deverão difcultar a implantação deste combustível no Brasil: a não-sustentabilidade da produtividade desses vegetais, e a baixa qualidade dos óleos vegetais disponíveis, inviabilizando a utilização como combustível. Para atenuação destes problemas se faz necessário o melhoramento genético dos vegetais cultivados e seleção de plantas silvestres que podem possuir alta produtividade de óleo/ha/ano. Portanto, este trabalho teve como objetivo avaliar o uso da relaxometria por RMN em baixa resolução, através das técnicas CPMG (Carr-Purcell-Meiboom-Gill), que gera sinal dependente do tempo de relaxação T2 e CWFP (Continuous Wave Free Precession), que gera sinal dependente tanto de T2 quanto de T1. Os valores de T2 obtidos a partir dos dados de CPMG apresentaram alta correlação com a razão Mz/M0 (r= 0,93), T¤ (r= 0,94) e T2 calculado (r= 0,91), obtidos a partir dos dados CWFP, para as 31 amostras analisadas. T2 apresentou correlação inversa com a viscosidade do óleo e número de cetano, ambos com r ~ -0,63 e correlação direta com o índice de iodo (r= 0,64), quando foram retiradas as amostra de mamona e palmáceas, que possuem óleo diferente das outras sementes. Os dados obtidos a partir do sinal CWFP, T¤ e Mz/M0 também obtiveram correlação similar às observadas para T2. T2, T¤ e T2 calculado apresentaram alta correlação com o PC1, obtido pela análise de PCA e baixa correlação com PC2. T1 obteve boa correlação com PC2 dos dados CWFP. Com o acoplamento dessas metodologias não-destrutivas a um sistema de medidas on-line, essas medidas poderão ser obtidas rapidamente (cerca de 1 s por amostra) permitindo a análise de um grande número de amostras, necessárias para o desenvolvimento de sementes com óleo de alta qualidade. Este desenvolvimento é um dos gargalos para o uso de biodiesel em altas concentrações no diesel.Biodiesel is a highly promising renewable energy source that has gained widespread acceptance in recent years as an environmentally friendly substitute for petroleum diesel oil fuel. However, there are two questions that should diffcult the use of this fuel in Brazil in high quantity: the low plant productivity and the low quality of available vegetable oils. To attenuate these problems is necessary the genetic improvement of cultivated plants and the selection of wild plants that may have high productivity of oil/ha/year and high quality oils. To help to accelerate the genetic selection of high quality oil we are developing fast and non-destructive low resolution NMR methods based on relaxometry. These methods uses CPMG pulse sequence (Carr-Purcell-Meiboom-Gill), which generates a decay signal dependent of relaxation time T2, and CWFP (Continuous Wave Free Precession), which generates a decay signal dependent of both (T1 and T2) relaxation times. The T2 values obtained through CPMG data shows high correlation to Mz/M0 ratio (r= 0,93), T¤ (r= 0,94) and T2 calculated through CWFP data (r= 0,91), for the 31 analyzed samples. T2 shows inverse correlation to the kinematic oil viscosity and cetane number, both with r ~ 0,63, and direct correlation to iodine value (r= 0,64), when excluded the castor bean and palm samples, which have different oil composition of others seeds. Data obtained through CWFP signal, T¤ and Mz/M0, also have correlation similar to observed for T2. T2, T¤ and Mz/M0 shows high correlation to PC1 and low correlation to PC2, both obtained through PCA analysis. T1 shows some correlation to CWFP PC2. With the coupling of these non-destructive methodologies to a high-throughput on-line measurement system (about 1 s per sample) it will be possible to analyze thousands of samples per hour, allowing the identification of seeds with high quality vegetable oil, necessary for the genetic selection of plants, which is necessary to speed up the Brazilian biodiesel program.
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Monte, Josà Cleyton Vasconcelos. "Interfaces da corrupÃÃo polÃtica no Brasil: a CPMI dos correios." Universidade Federal do CearÃ, 2012. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=8212.
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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel SuperiorA pesquisa tem como objetivo compreender o fenÃmeno da corrupÃÃo polÃtica no Brasil. Inicialmente, traÃo os elementos que caracterizam essas prÃticas, discutindo as causas e consequÃncias do comportamento corrupto para a democracia, tomando como referÃncia as anÃlises internacionais e os principais estudos brasileiros sobre o tema. Em seguida, analiso o papel das comissÃes parlamentares de inquÃrito (CPIs), ressaltando seus maiores desafios e crÃticas, os discursos sobre corrupÃÃo na arena parlamentar e a relaÃÃo com o campo jornalÃstico. Partindo de matÃrias produzidas pela imprensa e, principalmente, do RelatÃrio Final elaborado pela CPMI dos Correios, que investigou nos anos de 2005 e 2006 o famoso escÃndalo do âmensalÃoâ, elaboro uma anÃlise sobre a relaÃÃo entre o sistema polÃtico brasileiro e as prÃticas de corrupÃÃo, destacando os principais pontos de discussÃo no perÃodo do referido escÃndalo: a questÃo do financiamento de campanha e a complexa relaÃÃo entre partidos, empresas privadas e estatais, tratados a partir do âvaleriodutoâ e o debate sobre a formaÃÃo e manutenÃÃo das coalizÃes parlamentares, abordado atravÃs do âmensalÃoâ. Na conclusÃo, chamo atenÃÃo para algumas propostas de reforma polÃtica, trazidas à tona no momento dos trabalhos de investigaÃÃo parlamentar e a necessidade de participaÃÃo por parte da sociedade civil, pensados como mecanismos para combater a corrupÃÃo.
The research aims to understand the phenomenon of political corruption in Brazil. Initially, I trace elements that characterize these practices, discussing the causes and implications of corrupt behavior to democracy, by reference to the international analysis and the main Brazilian studies on this topic. Next, we analyze the role of parliamentary committees of inquiry (PCI), highlighting its major challenges and critical discourse on corruption in the parliamentary arena and the relationship with the journalistic field. Based on material produced by the press and especially the Final Report prepared by the JPCI of the Post Office, which in 2005 and 2006 investigated famous scandal of the "monthly allowance", an elaborate analysis of the relationship between the Brazilian political system and corrupt practices highlighting the main points of discussion during the period of this scandal: the issue of campaign finance and the complex relationship between political parties, private and state companies, treated from the "valerioduct" and the debate on the formation and maintenance of parliamentary coalitions, approached through the "monthly allowance". In conclusion, it just draws attentions to some proposals for political reform, brought to the fore at the time of research and the need for parliamentary participation by civil society, conceived as mechanisms to combat corruption.
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Amoura, Aadil. "Synthese logique sur reseaux programmables de type FPGA et CPLD." Grenoble INPG, 1998. http://www.theses.fr/1998INPG0158.
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Cette these se situe dans le cadre de la synthese logique. L'objectif de ce travail est de resoudre des problemes fondamentaux de la synthese logique sur les reseaux programmables de type fpga et cpld, lies a la decomposition technologique et a la prediction temporelle sur ce type de boitiers. La premiere partie du travail s'interesse aux techniques de decomposition technologique permettant un ciblage heterogene sur les reseaux programmables de type fpga. Nous partons des techniques classiques, puis sont proposees des alternatives basees sur le principe de couverture des nuds et la decomposition de roth&karp. Nous presentons en outre des methodes de bi-decomposition booleenne en utilisant les operateurs logiques or et xor. Ces methodes sont particulierement interessantes pour permettre une meilleure exploitation des ressources des nouveaux cplds ainsi que les differentes configurations des blocs logiques des nouveaux fpgas. La derniere partie traite de la prediction temporelle sur des cibles hierarchiques. La modelisation des circuits en utilisant les structures de cones logiques, et leur classification temporelle permet d'orienter un decoupage du plan de masse, lequel guidera les outils de placement et routage.
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Kannat, Tarik. "Synthèse logique et topologique sur réseaux programmables du type CPLD." Grenoble INPG, 1999. http://www.theses.fr/1999INPG0124.
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Cette these s'interesse aux methodes de conception sur reseaux programmables. Les reseaux programmables sont des circuits dont la fonctionnalite peut etre programmee electriquement au moment de l'utilisation par l'utilisateur lui-meme. Certains de ces circuits sont programmables une seule fois, d'autres sont programmables plusieurs fois. Pour cette derniere classe, cette flexibilite donnant le droit a l'erreur au cours de la conception a valu a ces composants une grande popularite. La premiere partie propose un macrogenerateur parametre de blocs de base arithmetique et logique la deuxieme partie de la these concerne un flot de conception complet. Partant d'un ensemble de fonctions booleennes et d'une cible parametre, les etapes etudiees sont les suivantes : a) optimisation des fonctions booleennes il s'agit de les minimiser en complexite mais le but essentiel est l'obtention d'une granularite adapte au bloc pal. Une approche de factorisation, injection minimisation est donc appropriee. B) la generation d'un plan de masse cette etape consiste a assigner les macrocellules ou cellules de base aux plan pal (dans l'exemple de la these leur nombre est de 4). La difficulte est la prediction du routage. Il s'agit donc d'un travail volumineux dont le resultat est tangible.
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MONTE, José Cleyton Vasconcelos. "Interfaces da corrupção política no Brasil: a CPMI dos correios." http://www.teses.ufc.br, 2012. http://www.repositorio.ufc.br/handle/riufc/4513.
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MONTE, José Cleyton Vasconcelos. Interfaces da corrupção política no Brasil: a CPMI dos correios. 2012. 119f. Dissertação (Mestrado em Sociologia) – Universidade Federal do Ceará, Departamento de Ciências Sociais, Programa de Pós-Graduação em Sociologia, Fortaleza-CE, 2012.Submitted by Maria Josineide Góis (josineide@ufc.br) on 2012-07-31T12:16:37Z No. of bitstreams: 1 2012_Dis_JCVMonte.pdf: 1078237 bytes, checksum: 8ab49b48e37c939e47119b7ec8ce292d (MD5)
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The research aims to understand the phenomenon of political corruption in Brazil. Initially, I trace elements that characterize these practices, discussing the causes and implications of corrupt behavior to democracy, by reference to the international analysis and the main Brazilian studies on this topic. Next, we analyze the role of parliamentary committees of inquiry (PCI), highlighting its major challenges and critical discourse on corruption in the parliamentary arena and the relationship with the journalistic field. Based on material produced by the press and especially the Final Report prepared by the JPCI of the Post Office, which in 2005 and 2006 investigated famous scandal of the "monthly allowance", an elaborate analysis of the relationship between the Brazilian political system and corrupt practices highlighting the main points of discussion during the period of this scandal: the issue of campaign finance and the complex relationship between political parties, private and state companies, treated from the "valerioduct" and the debate on the formation and maintenance of parliamentary coalitions, approached through the "monthly allowance". In conclusion, it just draws attentions to some proposals for political reform, brought to the fore at the time of research and the need for parliamentary participation by civil society, conceived as mechanisms to combat corruption.
A pesquisa tem como objetivo compreender o fenômeno da corrupção política no Brasil. Inicialmente, traço os elementos que caracterizam essas práticas, discutindo as causas e consequências do comportamento corrupto para a democracia, tomando como referência as análises internacionais e os principais estudos brasileiros sobre o tema. Em seguida, analiso o papel das comissões parlamentares de inquérito (CPIs), ressaltando seus maiores desafios e críticas, os discursos sobre corrupção na arena parlamentar e a relação com o campo jornalístico. Partindo de matérias produzidas pela imprensa e, principalmente, do Relatório Final elaborado pela CPMI dos Correios, que investigou nos anos de 2005 e 2006 o famoso escândalo do “mensalão”, elaboro uma análise sobre a relação entre o sistema político brasileiro e as práticas de corrupção, destacando os principais pontos de discussão no período do referido escândalo: a questão do financiamento de campanha e a complexa relação entre partidos, empresas privadas e estatais, tratados a partir do “valerioduto” e o debate sobre a formação e manutenção das coalizões parlamentares, abordado através do “mensalão”. Na conclusão, chamo atenção para algumas propostas de reforma política, trazidas à tona no momento dos trabalhos de investigação parlamentar e a necessidade de participação por parte da sociedade civil, pensados como mecanismos para combater a corrupção.
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Braga, José Miguel Coutinho de Oliveira. "Avaliação do risco de cárie dentária na população pediátrica da clínica pedagógica da Faculdade de Ciências de Saúde da UFP." Master's thesis, [s.n.], 2015. http://hdl.handle.net/10284/5062.
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Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina DentáriaA cárie precoce da infância é uma doença infecciosa, transmissível e multifactorial e é também a doença mais prevalente na cavidade oral das crianças. Além dos factores etiológicos, há um conjunto de variáveis como as condições sócio-económicas, a educação e a influência parental que podem influenciar a saúde oral das crianças. Assim, conhecer os principais factores de risco torna-se essencial para prevenir/controlar a progressão da cárie dentária. O presente estudo teve como principal objectivo a avaliação do risco e da experiência (cpod e CPOD) de cárie em pacientes pediátricos da Clínica Pedagógica da Faculdade de Ciências de Saúde da Universidade Fernando Pessoa. No total foram avaliadas 48 crianças (dos 4 aos 16 anos). Além da determinação dos valores de cpod e CPOD, as crianças foram avaliadas de acordo com um índice socio-económico (classificação de Graffar) e de acordo com a Circular Normativa nº 9/DSE de 19/7/2006 da DGS (como indicador de avaliação de risco de cárie dentária). No final foi determinada a associação/relação entre os factores de risco estudados e a classificação do risco/experiência de cárie nas crianças. Concluiu-se que valores médios de cpod e CPOD registados foram superiores aos valores médios nacionais dos estudos realizados pela DGS e que o nível sócio-económico das famílias das crianças observadas era maioritariamente de classe média-baixa e baixa. Foi observada uma associação significativa entre o risco/prevalência de cárie e a classificação sócio-económica, verificando-se que crianças de famílias com menores rendimentos apresentavam maior risco e experiência de cárie. Os hábitos alimentares (nomeadamente a ingestão de alimentos cariogénicos), a higiene oral e a prevenção/motivação para a saúde oral (da mãe, e por inerência da criança) também se reflectiram ao nível do risco/experiência de cárie das criança observadas. Este estudo indicou que a Classificação Social Internacional de Graffar e o Questionário do Programa Nacional de Saúde Oral relativamente ao risco reflectem os principais factores associados à cárie dentária e permitem caracterizar de uma forma eficiente o risco de cárie nas crianças. De futuro deverá alargar-se este tipo de estudos a uma amostra mais alargada de crianças e provenientes de várias áreas do País. Early childhood caries is an infectious, transmissible and multifactor disease and it is also the most prevalent oral disease in children. Along with aetiological factors there is a set of variables including socio-economic conditions, education and parental influence that can affect children’s oral health. Thus, the knowledge on most important risk factors is essential to prevent/control the progression of dental caries. The main objective of the present study was to evaluate dental caries risk and experience (“cpod” and “CPOD” indexes) in children at the “Clínica Pedagógica da Faculdade de Ciências de Saúde da Universidade Fernando Pessoa”. In total, 48 children (aged 4-16 years) were observed. Along with the determination of “cpod” and “CPOD” values, children were classified according to the socio-economic classification of Graffar and according to the “Circular Normativa nº 9/DSE de 19/7/2006” of DGS (as an indicator for dental caries risk). Finally, the association/relation between risk factors and the classification/ experience of risk in children were assessed. Results showed that mean cpod and CPOD values were above the Portuguese national average as determined in studies by the DGS and that the majority of children observed belonged to medium-low or low income families. A significant association between dental caries risk/ experience and the socio-economic classification was observed. In particular, children from lower income families presented higher risk/experience of caries. Dietary habits (namely ingestion of cariogenic food), oral hygiene as well as motivation for oral health (by the mother and inherently by the child) were also associated with childhood caries risk/ experience. This study suggested that the International Social Classification of Graffar as well as the “Questionário do Programa Nacional de Saúde Oral” relative to caries risk reflect the main factors associated with caries in children and are able to effectively characterize dental caries risk. In the future, such type of studies should include a larger number of children and should be performed at different geographical areas in Portugal.
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Mörch, Sophie. "Distribution Models for Chicago Pneumatic Division (CPD)." Thesis, Linköping University, Department of Science and Technology, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5852.
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Chicago Pneumatic Division is a division in the Atlas Copco Group consisting of five acquisitions now operating together. Due to the number of recent acquisitions by Chicago Pneumatic Division, the number of distribution centres has increased, making its structure more complex. The main question studied are how many distribution centres the division should operate and how the product companies best will supply the distribution centres, today as well as in the future. Four distribution models are created, with consideration to goods flow as well as financial and environmental aspects, both in present and future situation. The thesis also includes bench-marking with Atlas Copco Tools and Assembly Systems, Electrolux and Dell. The analysis showed that the division should operate three distribution centres, carrying inventory of products from all production companies. This model is also sustainable environmentally and brings the benefit of one consolidated shipment to the customers.
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Heale, Graham Stanley. "CPD and practice change : the chiropractors' perspective." Thesis, University of Portsmouth, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.500340.
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Continuing professional development (CPD) is now viewed as an integral part of professional practice and yet there is little evidence that traditional approaches to post-graduate learning result in changes to the way clinicians practise. Chiropractic is an independent primary contact profession with priorities and learning needs that are quite different from those practitioners working within the NHS. Evaluating the current level of continuing professional development by assessing the changes to practice introduced by chiropractors will assist in informing the future development of the profession.
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Temple, Kip. "ARTM CPM Receiver/Demodulator Performance: An Update." International Foundation for Telemetering, 2013. http://hdl.handle.net/10150/579654.
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ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NVSince the waveform was first developed by the Advanced Range Telemetry Program (ARTM) and adopted by the Range Commanders Council Telemetry Group (RCC/TG), receiver/demodulators for the ARTM Continuous Phase Modulation (CPM) waveform have undergone continued development by several hardware vendors to boost performance in terms of phase noise, detection performance, and resynchronization time. These same results were initially presented at the International Telemetry Conference (ITC) 2003 when hardware first became available supporting this waveform, at the time called ARTM Tier II. This paper reexamines the current state of the art performance of ARTM CPM receiver/demodulators available in the marketplace today.
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Perrins, Erik, and Michael Rice. "SURVEY OF DETECTION METHODS FOR ARTM CPM." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/605338.
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International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, CaliforniaThe ARTM Tier-2 waveform, called “ARTM CPM” in IRIG 106-04, has almost three times the spectral efficiency of PCM/FM and approximately the same detection efficiency. The improved spectral efficiency comes at the price of computational complexity in the receiver. The optimum receiver requires 128 real-valued matched filters and keeps track of the waveform state with a trellis of 512 states and 2048 branches. Various complexity reducing techniques are applied and the resulting loss in detection efficiency is quantified. It is shown that the full 512-state trellis is not required to achieve the desired detection efficiency: two different 32-state configurations were found to perform within one tenth of a dB of optimal. Noncoherent techniques are also evaluated. It is shown that the required complexity can be quite large to achieve a respectable detection efficiency. One noncoherent technique performed within 1.9 dB of the optimal with only 64 states, which is significant when considering the additional complexity savings of not having to track the carrier phase.
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Perrins, Erik. "COMPARISON OF RECEIVERS FOR MULTI-H CPM." International Foundation for Telemetering, 2002. http://hdl.handle.net/10150/606374.
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International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, CaliforniaA noncoherent receiver for the general case of M-ary partial response multi-h continuous phase modulation (CPM) is presented. The receiver operates on the principle of sequence estimation via the Viterbi Algorithm (VA). It offers a significant complexity reduction from the optimal coherent maximum likelihood sequence estimating (MLSE) receiver. The performance of the receiver is evaluated with computer simulations. It performs at a loss of 1–6 dB relative to the MLSE receiver for the CPM schemes considered in the simulations. The receiver shows promise in applications requiring reduced complexity and use of existing hardware.
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Čuka, Ondřej. "CPM a jeho efektivní podpora v IS." Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-3245.
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Diplomová práce popisuje moderní koncept řízení Corporate Performance Management a jeho efektivní podporu v informačních systémech organizace. První část práce se věnuje základním principům CPM, vycházejících ze současných manaţerských systémů, a jejich provázanosti na business intelligence technologie. Uvádí procesy, metriky, technologie, metodiky a přístupy, které se v rámci řízení výkonnosti a jeho zavádění v organizaci pouţívají. Druhá část práce se jiţ zabývá reálným projektem implementace řízení výkonnosti ve skupině RWE CZ. Popisuje průběh tohoto projektu a konfrontuje ho s doporučeními, která uvádí teorie. Pro jednotlivé fáze projektu jsou pak odvozeny kritické faktory úspěchu. V závěru práce je navrţena kategorizace těchto faktorů a ke kaţdému z faktorů je uvedeno doporučení pro jeho řešení.
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Gřešák, Ondřej. "Kritické faktory implementace Corporate Performance Management (CPM)." Master's thesis, Vysoká škola ekonomická v Praze, 2008. http://www.nusl.cz/ntk/nusl-6098.
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This thesis addresses a new management approach - "Corporate Performance Management" (CPM). It sets forth the concept of this new approach as a business performance monitoring and strategic support tool, its assumptions, framework, components, relationship to business intelligence, and related methodologies. Particular focus is placed on "key performance indicators" (KPI), their characteristics, segmentation, methods for their selection, and implementation procedures. The theoretical part of this work is devoted to creating a methodology by which CPM can be effectively implemented on projects in the financial sector with an emphasis on the critical success factors of such a project as a whole. The primary elements of this methodology are the selection of the best possible metrics, the project's overall success and the development of efficient reporting. The practical part of this work initially introduces "Project KPI 2008", which ran in Komerční banka (Czech Commercial Bank), then pits it against the theoretical methodologies defined in the theoretical section. The entire project is then assessed based on the results of the comparison, and finally, conclusions and recommendations are made for the future of this project. The main asset of this thesis is its creation of the afore-mentioned management methodologies and the ideal, course to be taken in implementing a KPI-focused project. This work is valuable not only for investigating key performance indicators themselves, but also as an informative tool for managers who would like to acquaint themselves with or learn more about the CPM concepts in general.