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1. Reina, Nicolas. Les contraintes de charge asymétriques chez l'homme moderne : étude microCT sur l'os trabéculaire : Asymmetric loading on modern humans : micro-CT study on trabecular bone.

Degree: Docteur es, Anthropobiologie, 2017, Université Toulouse III – Paul Sabatier

L'étude de l'os est d'un intérêt majeur en Anthropologie. Constituant la charpente des vertébrés, le squelette est le reflet de l'activité motrice. En effet, chaque élément du squelette a une fonction dictée par sa forme et un rôle autorisé par sa morphologie. C'est l'illustration la plus visible de l'adaptation. Ce processus est largement étudié dans la lignée humaine et ce dogme est au cœur de nombreuses recherches en Anthropobiologie. Ces caractères sont inscrits dans la forme de l'os. Chaque courbure, apophyse ou crête témoignent au moins en partie de l'action d'un muscle ou d'une fonction dictée par un lent processus évolutif voire adaptatif. Cette évolution se fait par l'évolution de caractères externes de l'os par sa forme ou l'anatomie " visible " d'une part et par l'évolution de caractères plus internes, subtils et directement lié aux propriétés biomécaniques de l'os à savoir l'os trabéculaire. L'os trabéculaire est un matériau plus fragile, déformable que l'os cortical. Il constitue une trace indirecte des contraintes appliquées squelette. C'est ainsi que les activités locomotrices, alimentaires ou occupationnelle seront inscrite dans l'endostructure osseuse. C'est la théorie développée par Wolff dès 1870 dans " The law of bone remodelling ". Il développa cette conception d'un processus actif, évolutif par l'observation macroscopique des travées de l'extrémité supérieure du fémur chez l'homme. Si la contrainte exercée sur un os en particulier augmente, il va se remodeler pour devenir plus rigide et résister à la charge dans ce segment d'os particulier et pour cette force particulière de contrainte. Nous avons étudié cette théorie sur deux modèles chez le vivant au niveau du membre supérieur et au niveau du membre inférieur pour caractériser les contraintes asymétriques appliquées à l'os trabéculaires. La latéralité ou préférence manuelle est un exemple d'activité asymétrique. Ses effets sur l'os sont bien connus lors de la pratique de sports intensifs ou d'activités très latéralisées. Cependant peu de données existent sur les activités usuelles et la préférence manuelle de l'homme jeune sans activité particulière. Par une étude en microscanner avec des coupes de 41 microns, des volumes d'intérêt dans les os du squelette carpien radial ont été réalisés sur des individus d'âge jeune sans antécédent particulier de façon bilatérale. Plusieurs variables cliniques et anthropométriques ont également été recueillis. Nous avons pu mettre en évidence des caractères endostructuraux expliquant la variabilité interindividuelles en les comparant avec des éléments anthropomorphiques et la force de serrage manuelle. Par ailleurs, les défauts d'axe en varus ou en valgus exercent des contraintes asymétriques également sur les articulations portantes. La chirurgie prothétique du genou croit ces dernières années de façon exponentielle par un effet conjoint de l'amélioration des techniques, et l'augmentation de l'incidence de l'arthrose.

The study of bone is of major interest in Anthropology. The skeleton is an image of…

Advisors/Committee Members: Braga, José (thesis director).

Subjects/Keywords: Latéralité; Chargement asymétrique; Os trabéculaire; Force de prise; Arthrose; Adaptation osseuse; Laterality; Asymetrical loading; Trabecular bone; Grip Strength; Osteoarthritis; Bone adaptation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Reina, N. (2017). Les contraintes de charge asymétriques chez l'homme moderne : étude microCT sur l'os trabéculaire : Asymmetric loading on modern humans : micro-CT study on trabecular bone. (Doctoral Dissertation). Université Toulouse III – Paul Sabatier. Retrieved from http://www.theses.fr/2017TOU30002

Chicago Manual of Style (16th Edition):

Reina, Nicolas. “Les contraintes de charge asymétriques chez l'homme moderne : étude microCT sur l'os trabéculaire : Asymmetric loading on modern humans : micro-CT study on trabecular bone.” 2017. Doctoral Dissertation, Université Toulouse III – Paul Sabatier. Accessed October 22, 2019. http://www.theses.fr/2017TOU30002.

MLA Handbook (7th Edition):

Reina, Nicolas. “Les contraintes de charge asymétriques chez l'homme moderne : étude microCT sur l'os trabéculaire : Asymmetric loading on modern humans : micro-CT study on trabecular bone.” 2017. Web. 22 Oct 2019.

Vancouver:

Reina N. Les contraintes de charge asymétriques chez l'homme moderne : étude microCT sur l'os trabéculaire : Asymmetric loading on modern humans : micro-CT study on trabecular bone. [Internet] [Doctoral dissertation]. Université Toulouse III – Paul Sabatier; 2017. [cited 2019 Oct 22]. Available from: http://www.theses.fr/2017TOU30002.

Council of Science Editors:

Reina N. Les contraintes de charge asymétriques chez l'homme moderne : étude microCT sur l'os trabéculaire : Asymmetric loading on modern humans : micro-CT study on trabecular bone. [Doctoral Dissertation]. Université Toulouse III – Paul Sabatier; 2017. Available from: http://www.theses.fr/2017TOU30002


Universidade do Rio Grande do Sul

2. Macêdo, Guilherme Ribeiro de. Análise da volatilidade de séries financeiras segundo a modelagem da família GARCH.

Degree: 2009, Universidade do Rio Grande do Sul

O conhecimento do risco de ativos financeiros é de fundamental importância para gestão ativa de carteiras, determinação de preços de opções e análise de sensibilidade de retornos. O risco é medido através da variância estatística e há na literatura diversos modelos econométricos que servem a esta finalidade. Esta pesquisa contempla o estudo de modelos determinísticos de volatilidade, mais especificamente os modelos GARCH simétricos e assimétricos. O período de análise foi dividido em dois: de janeiro de 2000 à fevereiro de 2008 e à outubro de 2008. Tal procedimento foi adotado procurando identificar a influência da crise econômica originada nos EUA nos modelos de volatilidade. O setor escolhido para o estudo foi o mercado de petróleo e foram escolhidas as nove maiores empresas do setor de acordo com a capacidade produtiva e reservas de petróleo. Além destas, foram modeladas também as commodities negociadas na Bolsa de Valores de Nova York: o barril de petróleo do tipo Brent e WTI. A escolha deste setor deve-se a sua grande importância econômica e estratégica para todas as nações. Os resultados encontrados mostraram que não houve um padrão de modelo de volatilidade para todos os ativos estudados e para a grande maioria dos ativos, há presença de assimetria nos retornos, sendo o modelo GJR (1,1) o que mais prevaleceu, segundo a modelagem pelo método da máxima verossimilhança. Houve aderência, em 81% dos casos, dos ativos a um determinado modelo de volatilidade, alterando apenas, como eram esperados, os coeficientes de reatividade e persistência. Com relação a estes, percebe-se que a crise aumentou os coeficientes de reatividade para alguns ativos. Ao se compararem as volatilidades estimadas de curto prazo, percebe-se que o agravamento da crise introduziu uma elevação média de 265,4% em relação ao período anterior, indicando um aumento substancial de risco. Para a volatilidade de longo prazo, o aumento médio foi de 7,9%, sugerindo que os choques reativos introduzidos com a crise, tendem a ser dissipados ao longo do tempo.

The knowledge of the risk of financial assets is of basic importance for active management of portfolios, determination of prices of options and analysis of sensitivity of returns. The risk is measured through the variance statistics and has in literature several econometrical models that serve to this purpose. This research contemplates the study of deterministic models of volatility, more specifically symmetrical and asymmetrical models GARCH. The period of analysis was divided in two: January of 2000 to the February of 2008 and the October of 2008. Such a proceeding was adopted trying to identify the influence of the economic crisis given rise in U.S.A. in the volatility models. The sector chosen for the study was the oil market and had been chosen the nine bigger companies of the sector in accordance with the productive capacity and reserves of oil. Beyond these, there were modeled also the commodities negotiated in the Stock Exchange of New York: the barrel of oil of the types Brent and WTI.…

Advisors/Committee Members: Galli, Oscar Claudino.

Subjects/Keywords: Volatility; Ativos financeiros : Precificação; GARCH models; Commodities : Investimento : Mercado de futuros; Análise financeira; Asymetrical; Risk; Standard deviation; Variance

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Macêdo, G. R. d. (2009). Análise da volatilidade de séries financeiras segundo a modelagem da família GARCH. (Thesis). Universidade do Rio Grande do Sul. Retrieved from http://hdl.handle.net/10183/15598

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Macêdo, Guilherme Ribeiro de. “Análise da volatilidade de séries financeiras segundo a modelagem da família GARCH.” 2009. Thesis, Universidade do Rio Grande do Sul. Accessed October 22, 2019. http://hdl.handle.net/10183/15598.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Macêdo, Guilherme Ribeiro de. “Análise da volatilidade de séries financeiras segundo a modelagem da família GARCH.” 2009. Web. 22 Oct 2019.

Vancouver:

Macêdo GRd. Análise da volatilidade de séries financeiras segundo a modelagem da família GARCH. [Internet] [Thesis]. Universidade do Rio Grande do Sul; 2009. [cited 2019 Oct 22]. Available from: http://hdl.handle.net/10183/15598.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Macêdo GRd. Análise da volatilidade de séries financeiras segundo a modelagem da família GARCH. [Thesis]. Universidade do Rio Grande do Sul; 2009. Available from: http://hdl.handle.net/10183/15598

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

3. Φαρμάκης, Λάμπρος. Φυσικοχημικός χαρακτηρισμός δειγμάτων αμύλου προερχόμενων από διάφορα δημητριακά με την τεχνική της μονοφασικής χρωματογραφίας πεδίου.

Degree: 2003, University of Patras; Πανεπιστήμιο Πατρών

Field Flow Fractionation (FFF) was applied for the analysis and the physicochemical characterization of starch granules emanating from various cereals. The source of origin of the sample and the dispersing medium of this constitute the decisive factors for the size and mass distribution of the starch granules. It was realised that the starch from barley presents either a trinomial or a bimodal distribution of the size of the particles depending on the variety of the origin. When the starch sample emanates from wheat, the starch granules present binomial size distribution, while the starch from maize presents a size distribution with big deviation. These observations are found in complete agreement with bibliographic reports. After that, and selecting to analyse a wheat starch sample, was studied the change of the average mass and number diameters, as well as the mass distribution of starch granules, concerning the dispersing medium of the sample that was used. Each time was altered either the pH, or the ionic strength of the dispersing medium. Were selected these two parameters, because their change influences immediately the potential energy of interaction not only between starch granules, but also between them and the channel wall of the FFF system that was used. Moreover, their values can easily be determined and altered experimentally. It was realised that in pH=7 - 11 of the dispersing medium, was caused no change in the size and mass distribution of starch granules. In pH<7 we cannot have reliable results, provided that the isoelectric point of the column is found to be in pH = 5.5 and influences drastically the particle - wall interactions. Maintaining the pH value of the dispersing medium constant and roughly equal to 9.5, we increase progressively the ionic strength with addition of suitable electrolyte. We observe that is caused reduction of mass percentage of the starch granules of small size with simultaneous corresponding increase of mass percentage of big granules. This means that the increase of the ionic strength of the dispersing medium leads to aggregation of starch granules of small size. The stability of the starch sample is influenced drastically by the presence or not and the nature of the surfactant in the dispersing medium. Thus, we studied the behaviour of the initial wheat starch sample and two fractions of the granules of the initial sample that resulted from application of SPLITT method in the initial sample. We proved that the absence of surfactant from the dispersing medium has as result the aggregation of small starch granules, which entails the reduction of the mass percentage of these particles. However, when the dispersing medium contains any surfactant, the nature of this has decisive importance. The most reliable results were received at the presence in the dispersing medium of the surfactant FL -70, a mix of anionic and non-ionic groups, as no phenomena of aggregation or adhesion of the starch granules in this case were observed. The use of Triton X -100, a non-ionic surfactant,…

Subjects/Keywords: Χρωματογραφία σε μία φάση - μονοφασική χρωματογραφία πεδίου; Μονοφασική χρωματογραφία φυγοκεντρικού πεδίου; Χαρακτηρισμός πολυδιασποράς κολλοειδών δειγμάτων; Χαρακτηρισμός δειγμάτων αμύλου; Προσδιορισμός κατανομής μεγέθους και μαζών σωματιδίων αμύλου; Μονοφασική χρωματογραφία πεδίου ασύμμετρης ροής; One-phase chromatography; Sedimentation FFF; Polydisperse colloids; Characterization of strarch granules; Determination of size and mass distribution of strarch granules; Study of the stability of strarch samples; Asymetrical flow FFF

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Φαρμάκης, . . (2003). Φυσικοχημικός χαρακτηρισμός δειγμάτων αμύλου προερχόμενων από διάφορα δημητριακά με την τεχνική της μονοφασικής χρωματογραφίας πεδίου. (Thesis). University of Patras; Πανεπιστήμιο Πατρών. Retrieved from http://hdl.handle.net/10442/hedi/14345

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Φαρμάκης, Λάμπρος. “Φυσικοχημικός χαρακτηρισμός δειγμάτων αμύλου προερχόμενων από διάφορα δημητριακά με την τεχνική της μονοφασικής χρωματογραφίας πεδίου.” 2003. Thesis, University of Patras; Πανεπιστήμιο Πατρών. Accessed October 22, 2019. http://hdl.handle.net/10442/hedi/14345.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Φαρμάκης, Λάμπρος. “Φυσικοχημικός χαρακτηρισμός δειγμάτων αμύλου προερχόμενων από διάφορα δημητριακά με την τεχνική της μονοφασικής χρωματογραφίας πεδίου.” 2003. Web. 22 Oct 2019.

Vancouver:

Φαρμάκης . Φυσικοχημικός χαρακτηρισμός δειγμάτων αμύλου προερχόμενων από διάφορα δημητριακά με την τεχνική της μονοφασικής χρωματογραφίας πεδίου. [Internet] [Thesis]. University of Patras; Πανεπιστήμιο Πατρών; 2003. [cited 2019 Oct 22]. Available from: http://hdl.handle.net/10442/hedi/14345.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Φαρμάκης . Φυσικοχημικός χαρακτηρισμός δειγμάτων αμύλου προερχόμενων από διάφορα δημητριακά με την τεχνική της μονοφασικής χρωματογραφίας πεδίου. [Thesis]. University of Patras; Πανεπιστήμιο Πατρών; 2003. Available from: http://hdl.handle.net/10442/hedi/14345

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.