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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
191

Systematics of late Cambrian (Sunwaptian) trilobites from the St. Charles Formation, southeastern Idaho

Hegna, Thomas Arthur 01 January 2006 (has links)
Previously unreported silicified trilobite faunas occur in a narrow stratigraphic interval of the Upper Cambrian (Sunwaptan) St. Charles Formation in the Bear River Range of southeastern Idaho. The faunas occur in four closely spaced rudstones and trilobite packstones indicating deposition in a shallow subtidal setting above storm wave base. At least 23 species are represented, included two undescribed genera and several undescribed species. The faunas are notable for their high trilobite abundance and pervasive silicification. Most coeval faunas have been described on the basis of small numbers of "crack-out" specimens, and the new material reveals many details of anatomy, including knowledge of most exoskeletal sclerites. The four trilobite-yielding beds contain markedly different taxon-abundance profiles, yet most species are shared between them. This suggests multiple, taphonomically-controlled samples of a similar underlying distribution, though true ecological variation cannot be discounted.
192

Freedwomen in pursuit of liberty: St. Louis and Missouri in the age of emancipation

Romeo, Sharon Elizabeth 01 December 2009 (has links)
This dissertation is a social and legal history of St. Louis and Missouri in the Civil War and Reconstruction eras. The study examines African American women's individual and collective struggles for freedom and civil status in the Age of Emancipation. By mining the records of the local military police in Missouri, this project finds that freedwomen, and even enslaved women, used military courts to seize rights during the Civil War. African American women entered this legal system as petitioners and claimed specific rights, including the right to paid labor, the right to state protection from bodily assault, and the right to custody of their children. The project identifies a number of key points when emancipation took a gendered path. Union officers were more likely to allow fugitive men into their camps, as they viewed women as unfit for military work. Mothers with children were particularly unwanted in military camps and forts throughout the state. After slave enlistment began in Missouri, men were freed in return for their military service but their female relatives had to find a separate path out of slavery. As part of the process of emancipation, freedwomen developed and asserted their own beliefs regarding marital rights and obligations. These marital claims were made in dialogue with the Union army, the Military Pension Bureau, divorce law, and the African American church and community. In the crisis of the Civil War, freedwomen developed a gendered conception of citizenship that was firmly rooted in their wartime struggle to destroy slavery. By considering the claims women made before military and civil officials, we can see in detail how African American women fought for national inclusion and, furthermore, that freedwomen's claims derived from a political philosophy that fueled their visions of freedom. The struggles of this population clarify the central role of the legacy of slavery, and the process of slave emancipation, in the construction of American citizenship rights.
193

Endocrine Interrelationships During Early Postpartum In St. Croix Sheep

Anderson, Richard Michael 01 May 1990 (has links)
The relationships of estradiol-17-beta, progesterone, and LH in the early postpartum St. Croix ewe were monitored during the breeding season in 1988. A second group of non-postpartum, ovariectomized St. Croix ewes were used to determine non-ovarian levels of progesterone for comparison. Results of this study indicate that: 1. The short duration rise in progesterone exhibited by some ewes is indicative of an ovulation. 2. Ewes that do exhibit a short luteal phase prior to the first "normal" luteal phase have a longer period from parturition to the first "normal" luteal phase. 3. Serum levels of LH increase beginning 3 days postpartum. 4. There is a strong relationship between the concentration of estradiol and the exhibition of behavioral estrus in the postpartum ewe. 5. There appears to be a definite but somewhat irregular pulsatile release pattern of estradiol from the follicle of the postpartum ewe. The ability of the endocrine system of the St. Croix to return to functional levels of production and release during the first 15 days postpartum is likely related to their relatively short postpartum intervals and subsequent pregnancies.
194

Improving LiDAR Data Post-Processing Techniques for Archaeological Site Management and Analysis: A Case Study from Canaveral National Seashore Park

Griesbach, Christopher James 03 March 2015 (has links)
Methods used to process raw Light Detection and Ranging (LiDAR) data can sometimes obscure the digital signatures indicative of an archaeological site. This thesis explains the negative effects that certain LiDAR data processing procedures can have on the preservation of an archaeological site. This thesis also presents methods for effectively integrating LiDAR with other forms of mapping data in a Geographic Information Systems (GIS) environment in order to improve LiDAR archaeological signatures by examining several pre-Columbian Native American shell middens located in Canaveral National Seashore Park (CANA).
195

Case Retrieval Nets as a Model for Building Flexible Information Systems

Lenz, Mario 16 July 1999 (has links)
Im Rahmen dieser Arbeit wird das Modell der Case Retrieval Netze vorgestellt, das ein Speichermodell für die Phase des Retrievals beim fallbasierten Schliessen darstellt. Dieses Modell lehnt sich an Assoziativspeicher an, insbesondere wird das Retrieval als Rekonstruktion des Falles betrachtet anstatt als eine Suche im traditionellen Sinne. Zwei der wesentlichen Vorteile des Modells sind Effizienz und Flexibilität: Effizienz beschreibt dabei die Fähigkeit, mit grossen Fallbasen umzugehen und dennoch schnell ein Resultat des Retrievals liefern zu können. Im Rahmen dieser Arbeit wird dieser Aspekt formal untersucht, das Hauptaugenmerk ist aber eher pragmatisch motiviert insofern als der Retrieval-Prozess so schnell sein sollte, dass der Benutzer möglichst keine Wartezeiten in Kauf nehmen muss. Flexibilität betrifft andererseits die allgemeine Anwendbarkeit des Modells in Bezug auf veränderte Aufgabenstellungen, auf alternative Formen der Fallrepräsentation usw. Hierfür wird das Konzept der Informationsvervollständigung diskutiert, welches insbesondere für die Beschreibung von interaktiven Entscheidungsunterstützungssystemen geeignet ist. Traditionelle Problemlöseverfahren, wie etwa Klassifikation oder Diagnose, können als Spezialfälle von Informationsvervollständigung aufgefasst werden. Das formale Modell der Case Retrieval Netze wird im Detail erläutert und dessen Eigenschaften untersucht. Anschliessend werden einige möglich Erweiterungen beschrieben. Neben diesen theoretischen Aspekten bilden Anwendungen, die mit Hilfe des Case Retrieval Netz Modells erstellt wurden, einen weiteren Schwerpunkt. Diese lassen sich in zwei grosse Richtungen einordnen: intelligente Verkaufsunterstützung für Zwecke des E-Commerce sowie Wissensmanagement auf Basis textueller Dokumente, wobei für letzteres der Aspekt der Wiederbenutzung von Problemlösewissen essentiell ist. Für jedes dieser Gebiete wird eine Anwendung im Detail beschrieben, weitere dienen der Illustration und werden nur kurz erläutert. Zuvor wird allgemein beschrieben, welche Aspekte bei Entwurf und Implementierung eines Informationssystems zu beachten sind, welches das Modell der Case Retrieval Netze nutzt. / In this thesis, a specific memory structure is presented that has been developed for the retrieval task in Case-Based Reasoning systems, namely Case Retrieval Nets (CRNs). This model borrows from associative memories in that it suggests to interpret case retrieval as a process of re-constructing a stored case rather than searching for it in the traditional sense. Tow major advantages of this model are efficiency and flexibility: Efficiency, on the one hand, is concerned with the ability to handle large case bases and still deliver retrieval results reasonably fast. In this thesis, a formal investigation of efficiency is included but the main focus is set on a more pragmatic view in the sense that retrieval should, in the ideal case, be fast enough such that for the users of a related system no delay will be noticeable. Flexibility, on the other hand, is related to the general applicability of a case memory depending on the type of task to perform, the representation of cases etc. For this, the concept of information completion is discussed which allows to capture the interactive nature of problem solving methods in particular when they are applied within a decision support system environment. As discussed, information completion, thus, covers more specific problem solving types, such as classification and diagnosis. The formal model of CRNs is presented in detail and its properties are investigated. After that, some possible extensions are described. Besides these more theoretical aspects, a further focus is set on applications that have been developed on the basis of the CRN model. Roughly speaking, two areas of applications can be recognized: electronic commerce applications for which Case-Based Reasoning may provide intelligent sales support, and knowledge management based on textual documents where the reuse of problem solving knowledge plays a crucial role. For each of these areas, a single application is described in full detail and further case studies are listed for illustration purposes. Prior to the details of the applications, a more general framework is presented describing the general design and implementation of an information system that makes uses of the model of CRNs.
196

The stratigraphy and mangrove development of the Holocene shoreline north of Adelaide

Burton, Thomas Edward. January 1984 (has links) (PDF)
Folded map in pocket Bibliography: leaves 136-143
197

A Translation of The Quaestio Disputata de Spiritualibus Creaturis of St Thomas Aquinas, with Accompanying Notes

Goodwin, Colin Robert, res.cand@acu.edu.au January 2002 (has links)
Scope of the work - This research project involves two components. The first is a translation from Latin into English of St Thomas Aquinas’s Quaestio disputata de spiritualibus creaturis. This is an important, though largely neglected, work of St Thomas dating from 1267- 68, dealing with a range of issues relating to the two categories of created spirits recognised by Thomas, viz. angels and human souls. The perspective of the Angelic Doctor is principally, though not exclusively, that of philosophy rather than of theology. What is found in the disputed question is the development of a number of arguments, and the consequent taking up of a number of positions, that are the immediate source of what St Thomas has to say about angels and the human soul in the first part (prima pars) of his Summa Theologiae - a part which was completed by 1268. What he has to say about the Averroistic view that there is only one receptive intellect, and only one agent intellect, for all human beings (see Articles 9 and 10 of the disputed question) prepared the way for his crucially important polemical treatise of 1270, the De unitate intellectus contra Averroistas. The project provides a complete translation of the Quaestio disputata de spiritualibus creaturis which extends across eleven ‘articles’ addressing selected questions concerning angels and/or human souls, viz. matter/form composition, modes of union with (or separation from) matter, specific differences between angels, receptive intellect and agent intellect in human beings, and the distinction between the soul and its powers. Pages vi- vii of the Introduction to the project discuss the way in which the translation of the text of St Thomas has been approached. To cite one sentence: “An attempt has been made at all times to use a style of translation that is pleasantly readable, non-jarring, and non-pedantic” - but one that is subject to total fidelity to expressing the philosophical meaning of St Thomas. The second component of the project is eleven sets of notes (one hundred and seven pages in all), each set of which belongs to one or other of the eleven articles making up the text of St Thomas as translated. There is a degree of cross-referencing between some of the notes belonging to particular articles. The notes are of varying length and are concerned to facilitate an understanding of what the Angelic Doctor has to say in his Quaestio disputata de spiritualibus creaturis. Most of the notes fall into one or other of the following categories: biographical (providing information about a number of persons whose names appear in Thomas’s text), historical (giving information about institutions and events connected with the time, or life, of St Thomas), exegetical (explaining why a particular English translation of Thomas’s Latin has been used, or illustrating a point in the text by citations from other works of the Saint, or on occasion taking issue with some feature of the critical Latin text of Leo Keeler, S.J., on which the translation has been based), and ‘philosophical extension’ notes (seeking to amplify what St Thomas has been arguing in the disputed question on created spirits by considering related issues in other works of his, or by further exploration of a concept or notion used in the text but not dwelt on by Thomas). 2 Aim of the work - The aim of the project has been to make available an accurate, and attractive, English translation from thirteenth century Latin of an important work of Thomas Aquinas, and to support this activity with accompanying sets of notes. The achievement of appropriate scholarly standards has been a pervasive intention in all that has been undertaken.
198

Effect of herbal medicines on the pharmacokinetics and pharmacodynamics of Warfarin in healthy subjects

Jiang, Xuemin January 2004 (has links)
Herbal medicines are widely used in our community. A survey of Australian consumers indicated that 60% had used complementary and/or alternative medicines in the past year with the majority not informing their doctor that they were using herbal medicines. Little is known about the potentially serious consequences of interactions between herbal and conventional medicines. Warfarin has an important role in treating people with heart disease, yet it has a narrow therapeutic range, is highly bound to plasma proteins, and is metabolised by cytochrome P450. This creates the potential for life-threatening interactions with other drugs and foods leading to excessive bleeding. Hence, warfarin is one of the most frequently investigated drugs for interaction studies. Early clinical reports suggest that there exists the potential for an interaction between warfarin and four herbal medicines: St John�s wort, ginseng, ginkgo and ginger. However, these herb-drug combinations have never been conclusively studied. The two clinical studies conducted as part of this research had an identical study design. Twenty-four healthy male subjects were recruited into the two separate studies. This was an open label, three-way crossover randomised study in twelve healthy male subjects, who received a single 25 mg dose of warfarin alone or after 14 days pre-treatment with St John�s wort, or 7 days pre-treatment with ginseng. Dosing with St John�s wort or ginseng was continued for 7 days after administration of the warfarin dose in study I or who received a single 25 mg dose of warfarin alone or after 7 days pre-treatment with recommended doses of ginkgo or ginger from single ingredient products of known quality. Dosing with ginkgo or ginger was continued for 7 days after administration of the warfarin dose in study II. Platelet aggregation, international normalised ratio (INR) of prothrombin time, warfarin enantiomer protein binding, warfarin enantiomer concentrations in plasma and S-7-hydroxywarfarin concentration in urine were measured in both studies. Statistical comparisons were made using ANOVA and 95% confidence interval (CI) for mean value and 90% CI for geometric mean ratio value are reported. n study I, the mean (95% CI) apparent clearance of S-warfarin after warfarin alone or with St John�s wort or ginseng were, respectively, 198 (174 � 223) ml/h, 269 (241 � 297) ml/h and 220 (201 � 238) ml/h. The respective apparent clearances of R-warfarin were 110 (94 � 126) ml/h, 142 (123 � 161) ml/h and 119 (106 � 131) ml/h. The mean ratio of apparent clearance for S-warfarin was 1.29 (1.16-1.46) and for R-warfarin was 1.23 (1.11-1.37) when St John�s wort was co-administered. The mean ratio of AUC0-168 of INR was 0.79 (0.70 - 0.95) when St John�s wort was co-administered. The urinary excretion ratio of S-7-hydroxywarfarin after administration of warfarin alone was 0.04 (0.03 � 0.06) mg/h and there was no significant difference following treatment with either St John�s wort 0.03 (0.02 � 0.04) mg/h or ginseng 0.03 (0.02 � 0.04) mg/h. The ratio of geometric means for S-7-hydroxywarfarin UER was 0.82 (0.61-1.12) for St John�s wort, and 0.68 (0.50-0.91) for ginseng. St John�s wort and ginseng did not affect the apparent volumes of distribution or protein binding of warfarin enantiomers. In study II, the mean (95% CI) apparent clearance of S-warfarin after warfarin alone, with ginkgo or ginger were 189 (167 � 210) ml/h, 200 (173 � 227) ml/h and 201 (171 � 231) ml/h, respectively. The respective apparent clearances of R-warfarin were 127 (106 � 149) ml/h, 126 (111 � 141) ml/h and 131 (106 � 156) ml/h. The mean ratio of apparent clearance for S-warfarin was 1.05 (0.98 -1.12) and for R-warfarin was 1.00 (0.93 -1.08) when co-administered with ginkgo. The mean ratio of AUC0-168 of INR was 0.93 (0.81 -1.05) when co-administered with ginkgo. The mean ratio of apparent clearance for S-warfarin was 1.05 (0.97 -1.13) and for R-warfarin was 1.02 (0.95 -1.10) when co-administered with ginger. The mean ratio of AUC0-168 of INR was 1.01 (0.93 -1.15) when co-administered with ginger. The urinary excretion ratio (UER) of S-7-hydroxywarfarin after administration of warfarin alone was 0.04 (0.03 � 0.05) mg/h and there was no significant difference following treatment with either ginkgo 0.04 (0.03 � 0.04) mg/h or ginger 0.03 (0.02 � 0.04) mg/h. The ratio of geometric means for S-7-hydroxywarfarin UER was 1.07 (0.69-1.67) for ginkgo, and 1.00 (0.64-1.56) for ginger. Ginkgo and ginger did not affect the apparent volumes of distribution or protein binding of either S-warfarin or R-warfarin. In conclusion, St John�s wort significantly induced the apparent clearance of both S-warfarin and R-warfarin, which in turn resulted in a significant reduction in the pharmacological effect of rac-warfarin. Ginseng, ginkgo and ginger at recommended doses affect neither clotting status, nor the pharmacokinetics or pharmacodynamics of either S-warfarin or R-warfarin in healthy subjects.
199

Faunal Remains from the Pine Hill Site (PS-6), St. Lawrence County, New York

Vavrasek, Jessica Lee 01 December 2010 (has links)
The Pine Hill collection was discovered in the archaeology lab at State University of New York College at Potsdam after remaining unstudied for over 30 years since its initial excavation in the 1960s and 1970s. Pine Hill has been identified as a fifteenth century St. Lawrence Iroquois village site, located in St. Lawrence County, New York. The faunal remains and bone tools from the site indicate food procurement strategies, seasonal activities, the presence of discrete activity areas at the site, and the production and use of a wide range of bone tools. Replication experiments conducted on several bone tool types provide insight about how these tools were made, used, and how quickly they might be discarded. As one of the first reports on a St. Lawrence Iroquois site in the region, this study presents important information about this group.
200

An examination of the factors affecting the sustainability of the Newfoundland & Labrador snow crab fishery /

Milley, Noel C., January 2005 (has links)
Thesis (M.M.S.)--Memorial University of Newfoundland, 2005. / Bibliography: leaves 85-91.

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