Dissertations / Theses on the topic 'Jorgensen'

En el presente trabajo sostenemos que si bien desde un sistema lógico hasta ahora no se ha logrado mostrar la existencia de una semántica de los enunciados imperativos, sin embargo sí demostramos que el problema que representa uno de los cuernos del dilema de Jørgensen no tiene la misma fuerza que cuando se planteó. Es así que enunciados de tipo “¡Juan, haz tus deberes!”, si bien no tienen un valor de verdad, esto no quiere decir que no tenga otro valor semántico, como el de justicia, por ejemplo. Para efectos del presente trabajo, nos restringiremos a una semántica bivalente justo/injusto, pues consideramos que si demostramos que dicha semántica le corresponde a los imperativos, recién cabe plantearse el estudio de una semántica polivalente de los imperativos. Por otro lado, metodológicamente, el presente trabajo se inserta dentro de la filosofía matemática. Cabe señalar que tal denominación no hace referencia a la filosofía de las matemáticas en absoluto, sino el mismo hace referencia al método de estudio de la filosofía. Así, la filosofía matemática es la investigación filosófica de un tema haciendo uso de herramientas formales (lógica y matemáticas). Esta forma de investigación es la que se realiza en el Munich Center for Mathematical Philosophy – MCMP (ver: http://www.mcmp.philosophie.uni-muenchen.de/index.html). Y que en nuestro país se hace en el Taller de Filosofía Matemática que funciona en la Facultad de Matemáticas de la Universidad Nacional Mayor de San Marcos, al cual pertenecemos. Al presente trabajo, le hemos agregado un vocabulario esencial de los términos más empleados en el curso de nuestra investigación y dos apéndices, que indican el contexto mayor dentro del cual se ubica la presente investigación. Ambos apéndices pueden ser vistos como los problemas que están pendientes de ser resueltos si se quiere contar con una auténtica y adecuada lógica de imperativos.
Tesis

Harsh realities exist in the South African Police Service (SAPS) that require concepts such as burnout and work engagement to be studied in the context of work-related well-being. Although these difficulties relate to police officials experiencing work-related trauma, more stressors seem to manifest on an organisational level, which in turn affects the psychological well-being of police officials. This study seeks to focus on the burnout and engagement of members of the Local Criminal and Record Centre (LCRC) in the SAPS. The members of the LCRC are exposed to severe occupational stressors relating to their job content, which necessitates research in occupational stress relating to the health of SAPS members. For the purposes of this study, the model of occupational stress, commitment and ill health of Cartwright and Cooper (2002) will be utilised to explain strain and organisational commitment. Work-related well-being, on the other hand, can best be explained by referring to the model of well-being developed by Schaufeli and Bakker (200 1 ). Since job demands play a central role in burnout, it is necessary to implement preventive organisationally-based strategies to address high job demands. Upon reviewing stress research, it became clear that a serious lack of intervention research exists. Little information is available about the work-related well-being of SAPS members, whilst no documented research could be found regarding the effects of an intervention programme on the work-related well-being of LCRC members. The study aimed at utilising three levels of intervention (primary, secondary and tertiary) on organisational and individual level. An integrated classification scheme of both the positive and negative aspects of work-related well-being on the organisational and individual level was developed and presented to members from the LCRC over a one-year period. The research method for each of the three articles of this study consisted of a brief literature review and an empirical study. An availability non-randomised sample was selected because the entire in-tact group of the LCRC of the SAPS (N=111) in the North West Province was included in the study. A survey design was used to achieve the research objectives of both Articles 1 and 2, whilst a longitudinal survey design was utilised in Article 3, where the same instruments were administered at two different times (over a one-year period) to the same group of participants. The measuring instruments used in this study are the Maslach Burnout Inventory-General Survey (MBI-GS), Utrecht Work Engagement Scale (UWES), Job Demands-Resources Scale (JDRS), Health subscales, Organisational Commitment subscales, the ASSET questionnaire and a biographical questionnaire. Structural equation modelling was implemented to test a structural model of work-related wellbeing. A good fit was found for the model in which perceived job demands contributed to burnout which, in turn, impacted on ill health. Work wellness was determined by the relationship between two opposite constructs, namely burnout and engagement. The work-related well-being of members of the LCRC was affected by an environment of high job demands and inadequate resources. In Article 2, multiple regression analyses showed that occupational stress explained 19% of the variance in psychological ill health and 17% of the variance in physical ill health. A two-step multiple regression analysis conducted with the variables in their continuous form revealed that control was a statistically significant predictor of both physical and psychological ill health, while job overload statistically significantly predicted psychological ill health. Occupational stress also explained 17% of the variance in individual commitment and 16% of the variance in organisational commitment. It was concluded that individual commitment moderated the effects of stressful work relations on ill health. LCRC members portrayed a high risk to fall ill due to exhaustion; they were less enthusiastic about their job and tended to derive a lower sense of significance from their work. In addition, members showed a major risk for developing low affective commitment due to low work engagement. Exhaustion influenced the way members view their job demands, organisational and social support, as well as growth opportunities available to them. A lack of advancement opportunities and job insecurity contributed to feelings of exhaustion and cynicism. Another objective of this study was to evaluate interventions used to promote work-related wellbeing of LCRC members. Although no significant differences were found between the pre- and post-measurements, some positive aspects did flow from the interventions. For instance an active effort by management to address resource needs. Recommendations for future research were made.
Thesis (Ph.D. (Industrial Psychology))--North-West University, Potchefstroom Campus, 2007.

In this thesis, electron paramagnetic resonance (EPR) was utilized in measuring and characterizing the dopant ions in three samples of lithium niobate (LiNbO₃). The first sample was LiNbO₃ of congruent composition doped with 0.25% mol chromium (LiNbO₃:Cr). This sample was studied in detail using two microwave frequencies, 9.4 GHz and 34.4 GHz. It was also studied both at room temperature and at 10 K. Several centers including complexes of Cr-Cr pairs were observed in addition to the most prevalent axial Cr³⁺ center. The other two samples were LiNbO₃:Mg:Fe, one of congruent composition and the other of stoichiometric composition. The congruent composition contained 6% mol Mg and 0.02% mol Fe, while the stoichiometric sample contained 0.45% mol Mg and 0.01% mol Fe. The stoichiometric composition contains all the same centers observed in the congruent material, plus two additional centers. Since the stoichiometric material provides EPR spectra of much higher resolution, those centers existing in both compositions were characterized more accurately from the stoichiometric material. A discussion of models for dopant center symmetries, dopant positions in the LiNbO₃ lattice, and the charge compensators required by each center is provided. It is shown that charge compensators play an important role in explaining the existence of the additional centers observed in the stoichiometric material.

Christine Jorgensen is the first known American citizen undergo sexual reassignment surgery. After her medical operations in Denmark in 1952, during which George Jorgensen Jr., a twenty-six year old man from the Bronx, New York, became Christine Jorgensen, an attractive, feminine woman, Jorgensen returned home to face the curiosity and scrutiny of the American public. As the “first celebrity transsexual," Jorgensen sparked public controversy by questioning the gender expectations that structured society in mid-twentieth century America. Jorgensen’s gender presentation closely aligned to the idealized standards of womanhood reinforced by institutional forces during the 1950s. Due to the amount of public scrutiny she faced after her transition, Jorgensen had to conform to these expectations entirely in order to achieve social acceptance. Examining Jorgensen’s gender expression critically exposes the social limits for expression of gender as well as what forces were responsible for placing these limits on women.

Cette thèse s’inscrit dans le cadre de la thématique du Laboratoire de Pharmacognosie de l’UFR des Sciences de santé, au sein de l’Université de Bourgogne Franche-Comté et du Laboratoire de Produits Naturels de la Faculté de Sciences, au sein de l’Universidad Central de Venezuela. Elle vise essentiellement l’étude phytochimique des graines de Billia rosea (Planch. & Linden) C. Ulloa & P. Jørg, famille des Sapindaceae, qui est utilisé en médecine traditionnelle comme antidiabétique, analgésique et pour le traitement des hémorroïdes et de la fièvre. L'étude de cette espèce végétale a conduit à l’isolement et à la caractérisation de 10 saponines triterpéniques parmi lesquelles 5 sont de structure nouvelle (Billiosides A–E), un analogue connu et une structure a été proposée pour les 4 autres saponines qui devraient être vérifiées dans des études ultérieures.Les structures ont été élucidées principalement par l’utilisation de RMN 1D et 2D (1H, 13C, DEPT, COSY, TOCSY, NOESY, ROESY, HSQC, et HMBC) ainsi que la spectrométrie de masse comme (3β,21β,22α)-3-[(2-O-β-D-glucopyranosyl-O-[α-L-arabinopyranosyl-(1 / 4)]-β-D-glucopyranosyl)oxy]-21-[((2E,6S)-2,6-dimethyl-6-hydroxyocta-2,7-dienoyl)oxy]-22-(acetyloxy)-24-hydroxyolean-12-en-28-oic acid (Billioside A), (3β,21β,22α)-3-[(2-O-β-D-galactopyranosyl-β-D-glucopyranosyl)oxy]-21,22-dihydroxyolean-12-en-28-yl O-α-L-arabinopyranosyl-(1 → 4)-β-D-glucopyranoside (Billioside B), (3β,21β,22α)-3-[(2-O-β-D-galactopyranosyl-O-[α-L-arabinopyranosyl-(1 → 4)]-β-D-xylopyranosyl)oxy]-21,22-dihydroxyolean-12-en-28-yl O-β-D-glucopyranoside (Billioside C), (3β,21β,22α)-3-[(2-O-β-D-galactopyranosyl-O-[α-L-arabinopyranosyl-(1 → 4)]-β-D-glucopyranosyl)oxy]-21,22-dihydroxyolean-12-en-28-yl O-β-Dglucopyranoside (Billioside D), (3β,21β,22α)-3-[(2-O-β-D-galactopyranosyl-O-[α-L-arabinopyranosyl-(1 → 4)]-β-Dglucopyranosyl)oxy]-21,22-dihydroxyolean-12-en-28-yl O-β-D-glucopyranosyl-(1 → 6)-β-D-glucopyranoside (Billioside E), et dipteroside A.Les structures proposées pour les 4 autres saponines sont (3β,16α,21β,22α)-3-[(4-O-α-L-arabinopyranosyl-β-D-glucuronopyranosyl)oxi]-22-(acetyloxy)-16,24,28-trihidroxyolean-12-en-21-yl-O-(3,4-di-O-angeloyl)-6-Deoxy-β-D-glucopyranoside, es (3β,16α,21β,22α)-3-[(4-O-α-L- glucuronopyranosyl -β-D-glucuronopyranosyl)oxy]- 16,22,24,28-tetrahidroxyolean-12-en-21-yl-O-(3,4-di-O-angeloyl)-6-Deoxy-β-D-glucopyranoside, (3β,16α,21β,22α)-3-[(2-O- β-D-galactopyranosyl-β-D-glucuronopyranosyl)oxy]-22-(acetyloxy)-16,24,28-trihidroxyolean-12-en-21-yl-O-(3,4-di-O-angeloyl)-6-Deoxy-β-D-glucopyranoside et (3β,21β,22α)-3-[(2-O-β-D-galactopyranosyl-O-[α-L-arabinopyranosyl-(1→4)]-β-D-xylopyranosyl)oxy]-21-acetyl-22-hidroxyolean-12-en-28-yl-O-α-L-arabinopyranosyl-(1→4)-β-D-glucopyranoside.Billiosides B et C ont été testés en vue d’évaluer leurs capacité à inhiber l'absorption intestinale du glucose in situ dans des segments d'intestins de rat, et sa capacité à inhiber le glucose-6-phosphatase, enzyme impliquée dans la formation du glucose. Billiosides B et C ont montré des effets modérés dans les deux expériences
This thesis was carried out in the the Laboratory of Pharmacognosy, in health department of the University of Burgundy and in the Laboratory of Natural products of Central University of Venezuela.This research work focused on the phytochemical study of the sedes of Billia rosea (Planch. & Linden) C. Ulloa & P. Jørg, Sapindaceae family. Billia rosea seeds have traditionally been used as antidiabetic, analgesic and for the treatment of hemorrhoids and fever. In the study of this plant was isolated and characterized 10 triterpene saponins, among which 5 has a new structure in the literature of natural products (Billiosides A–E), a known analogue and 4 proposals as possible structures to the remaining isolated saponins, which must be confirmed in subsequent studies.Their structures were elucidated on the basis of extensive 1D and 2D NMR experiments (1H, 13C, DEPT, COSY, TOCSY, NOESY, ROESY, HSQC, et HMBC) and mass spectrometry as (3β,21β,22α)-3-[(2-O-β-D-glucopyranosyl-O-[α-L-arabinopyranosyl-(1 / 4)]-β-D-glucopyranosyl)oxy]-21-[((2E,6S)-2,6-dimethyl-6-hydroxyocta-2,7-dienoyl)oxy]-22-(acetyloxy)-24-hydroxyolean-12-en-28-oic acid (Billioside A), (3β,21β,22α)-3-[(2-O-β-D-galactopyranosyl-β-D-glucopyranosyl)oxy]-21,22-dihydroxyolean-12-en-28-yl O-α-L-arabinopyranosyl-(1 → 4)-β-D-glucopyranoside (Billioside B), (3β,21β,22α)-3-[(2-O-β-D-galactopyranosyl-O-[α-L-arabinopyranosyl-(1 → 4)]-β-D-xylopyranosyl)oxy]-21,22-dihydroxyolean-12-en-28-yl O-β-D-glucopyranoside (Billioside C), (3β,21β,22α)-3-[(2-O-β-D-galactopyranosyl-O-[α-L-arabinopyranosyl-(1 → 4)]-β-D-glucopyranosyl)oxy]-21,22-dihydroxyolean-12-en-28-yl O-β-Dglucopyranoside (Billioside D), (3β,21β,22α)-3-[(2-O-β-D-galactopyranosyl-O-[α-L-arabinopyranosyl-(1 → 4)]-β-Dglucopyranosyl)oxy]-21,22-dihydroxyolean-12-en-28-yl O-β-D-glucopyranosyl-(1 → 6)-β-D-glucopyranoside (Billioside E), and dipteroside A.The proposed structures for the other 4 isolated saponins are (3β,16α,21β,22α)-3-[(4-O-α-L-arabinopyranosyl-β-D-glucuronopyranosyl)oxi]-22-(acetyloxy)-16,24,28-trihidroxyolean-12-en-21-yl-O-(3,4-di-O-angeloyl)-6-Deoxy-β-D-glucopyranoside, es (3β,16α,21β,22α)-3-[(4-O-α-L- glucuronopyranosyl -β-D-glucuronopyranosyl)oxy]- 16,22,24,28-tetrahidroxyolean-12-en-21-yl-O-(3,4-di-O-angeloyl)-6-Deoxy-β-D-glucopyranoside, (3β,16α,21β,22α)-3-[(2-O- β-D-galactopyranosyl-β-D-glucuronopyranosyl)oxy]-22-(acetyloxy)-16,24,28-trihidroxyolean-12-en-21-yl-O-(3,4-di-O-angeloyl)-6-Deoxy-β-D-glucopyranoside and (3β,21β,22α)-3-[(2-O-β-D-galactopyranosyl-O-[α-L-arabinopyranosyl-(1→4)]-β-D-xylopyranosyl)oxy]-21-acetyl-22-hidroxyolean-12-en-28-yl-O-α-L-arabinopyranosyl-(1→4)-β-D-glucopyranoside.Billiosides B and C exhibited moderate effects when tested as hepatic glucose-6-phosphatase inhibitors and as glucose intestinal absorption inhibitors, using in situ rat intestinal segments
Este trabajo de investigación, realizado en conjunto entre el Laboratorio de Farmacognosia de la Facultad de Ciencias de la Salud, de la Université de Bourgogne Franche-Comté y el Laboratorio de Productos Naturales de la Facultad de Ciencias de la Universidad Central de Venezuela; se centró en el estudio fitoquímico de las semillas de Billia rosea (Planch. & Linden) C. Ulloa & P. Jørg, perteneciente a la familia Sapindaceae, utilizada tradicionalmente como antidiabético, analgésico y para el tratamiento de hemorroides y fiebre. El estudio de esta especie vegetal condujo al aislamiento y caracterización de 9 saponinas triterpénicas, entre las cuales 5 poseen una estreuctura nueva en la literatura de productos naturales (Billiosidos A–E), un análogo conocido, además de 3 propuestas como posibles estructuras a las restantes saponinas aisladas, que deben ser confirmadas en estudios posteriores. Las estructuras se elucidaros principalmente mediante el uso de RMN 1D y 2D (1H, 13C, DEPT, COSY, TOCSY, NOESY, ROESY, HSQC, et HMBC) y espectrometría de masa como ácido (3β,21β,22α)-3-[(2-O-β-D-glucopiranosil-O-[α-L-arabinopiranosil-(1→4)]-β-D-glucopiranosil)oxi]-21-[((2E,6S)-2,6-dimetil-6-hidroxiocta-2,7-dienoil)oxi]-22-(acetiloxi)-24-hidroxiolean-12-en-28-oico, (Billiosido A) (3β,21β,22α)-3-[(2-O-β-D-galactopiranosil-β-D-glucopiranosil)oxi]-21,22-dihidroxiolean-12-en-28-il-O-α-L-arabinopiranosil-(1 → 4)-β-D-glucopiranosido (Billiosido B), (3β,21β,22α)-3-[(2-O-β-D-galactopiranosil-O-[α-L-arabinopiranosil-(1→4)]-β-D-xilopiranosil)oxi]-21,22-dihidroxiolean-12-en-28-il-O-β-D-glucopiranosido (Billiosido C), (3β,21β,22α)-3-[(2-O-β-D-galactopiranosil-O-[α-L-arabinopiranosil-(1 → 4)]-β-D-glucopiranosil) oxi]-21,22-dihidroxiolean-12-en-28-yl-O-β-D-glucopiranosido (Billiosido D), (3β,21β,22α)-3-[(2-O-β-D-galactopiranosil-O-[α-L-arabinopiranosil-(1→4)]-β-D-glucopiranosil)oxi]-21,22-dihidroxiolean-12-en-28-il-O-β-D-glucopiranosil-(1→6)-β-D-glucopiranosido (Billiosido E) y Dipterosido A. Las estructuras propuestas para las otras 3 saponinas aisladas son (3β,16α,21β,22α)-3-[(4-O-α-L-arabinopiranosil-β-D-glucoronopiranosil)oxi]-22-(acetiloxi)-16,24,28-trihidroxiolean-12-en-21-il-O-(3,4-di-O-angeloil)-6-Deoxy-β-D-glucopiranosido, (3β,16α,21β,22α)-3-[(4-O-β-D-galactopiranosil-β-D-glucoronopiranosil)oxi]-22-(acetiloxi)-16,24,28-trihidroxiolean-12-en-21-il-O-(3,4-di-O-angeloil)-6-Deoxy-β-D-glucopiranosido y (3β,21β,22α)-3-[(2-O-β-D-galactopiranosil-O-[α-L-arabinopiranosil-(1→4)]-β-D-xilopiranosil)oxi]-21-acetil-22-hidroxiolean-12-en-28-il-O-α-L-arabinopiranosil-(1→4)-β-D-glucopiranosido. También se evaluó la actividad inhibitoria de los Billiosidos B y C sobre la absorción intestinal de glucosa in situ en segmentos de intestinos de ratas, además de la capacidad inhibitoria de estos compuestos sobre la enzima glucosa-6-fosfatasa, implicada en la formación de glucosa. Estos Billiosidos mostraron efectos moderados en estos dos experimentos

The next generation of Autonomous Underwater Vehicles (AUV) can impact our observation of the world. The flight simulation and full-envelope hydrodynamics modeling can improve the performance of AUVs in terms of control, navigation and positioning. In order to achieve agile maneuverability, a more accurate database of full-envelope hydrodynamic coefficients is supposed to be generated. Two semi-empirical methods, Jorgensen and DATCOM, and two numerical method, Computational Fluid Dynamics (CFD) and XFLR5 are used to push the boundaries of hydrodynamic coefficients: lift, drag and moment coefficients for flight-style AUVs at the Swedish Maritime Robotics Center (SMaRC). A comparison of different approaches and tools, and an analysis of the most appropriate approaches for different regions of a defined maneuver has been conducted in this thesis. A data confidence level was proposed as a way to estimate the accuracy of the data and a structured database was built in terms of data confidence level. Different components of the AUV such as the hull body and wings were analyzed separately. The new database is input to a 3DOF Simulink model and the 6DOF SMaRC hydrobatics simulator for flight dynamics simulations. Simulations show that the new database has a good applicability.

This dissertation consists of three solo recitals and one lecture recital. The repertoire of all programs is composed of music written specifically for the trombone plus two transcriptions of works for voice. The purpose of this paper is to investigate the use of selected vocal pedagogical material as a means of developing musicianship for the trombonist. The historical relationship of the voice and the trombone is traced through written documentation and musical composition. Similarities between the development of legato technique for the vocal student and the trombonist are examined. A brief history of the vocalise and its pedagogical function is presented. The development of expressive musical performance for the trombonist is explored through the use of examples from three different vocalises of Marco Bordogni.

The single most recognized transgender woman in the 1950s and throughout much of the 1960s, Christine Jorgensen symbolized in many ways the quintessential white, upper-middle-class woman and the medicalized standard by which other transgender women were measured, including poor transgender women and transgender women of color. In the late 1960s and 1970s, however, a new class of transgender women would come to denounce such an image. Holly Woodlawn, a cult icon in the late 1960s and early 1970s, for example, viewed Christine as outdated and out-of-sync with her own gendered desires for expression. Holly gained notoriety for her outrageous role in Andy Warhol's film Trash (1970). In the film, she plays the glamorous and co-dependent role of the counter-culture sex addicted welfare queen. In the film, she denounces traditional transsexual women narratives and engenders instead new forms of gendered expressions unencumbered by sex change anxieties. Christine and Holly are but two historical transgender icons, who, in the 1950s, 60s and 70s suggested new possibilities for gendered expressions. Their public personas historicize the construction of transgender identity, making visible the classed and racialized privileging of sex change surgery and the alternative expressions embodied by poor transgender women and transgender women of color. Although unable to afford sex change surgery, poor transgender women, in particular, transgender women of color, embodied new models of gender identity beyond the gendered constructs of whiteness.
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Bibliography: leaves 167-176.
xvi, 176 leaves : ill. ; 30 cm.
Title page, contents and abstract only. The complete thesis in print form is available from the University Library.
The aim of this thesis is to characterise a bacterial expression system for recombinant production of proteins with relevance to industry. Recombinant protein expression under control of stationary-phase inducible promoters is characterised, and the expression levels are quantitatively compared with those under control of IPTG-inducible promoters. A number of bacterial expression systems are constructed using promoter::cat transcriptional fusions.
Thesis (Ph.D.)--University of Adelaide, Depts. of Microbiology and Immunology and Chemical Engineering, 1997

Bibliography: leaves 167-176.
xvi, 176 leaves : ill. ; 30 cm.
The aim of this thesis is to characterise a bacterial expression system for recombinant production of proteins with relevance to industry. Recombinant protein expression under control of stationary-phase inducible promoters is characterised, and the expression levels are quantitatively compared with those under control of IPTG-inducible promoters. A number of bacterial expression systems are constructed using promoter::cat transcriptional fusions.
Thesis (Ph.D.)--University of Adelaide, Depts. of Microbiology and Immunology and Chemical Engineering, 1997