IP Peg is a member of a family of star systems known as cataclysmic variable stars, CVs. CVs are star systems in which a red dwarf star orbits a white dwarf and mass transfer is taking place from the red dwarf to the white dwarf. The mass ratio of the two component stars has been found the most difficult parameter to determine. Tools used in the analysis of mass-ratio included the differential photometric light curve of IP Peg, Doppler tomograms, and spectral data covering the HP emission-line. The mass ratio was found to lie in the range, q = 0.44 ± 0.14. The inclination lies in the range i = 81.5° ± 8.5°. Finally, the accretion disk radius was 0.342 times the distance between the stars. The analysis of the parameters of eclipsing CV systems like IP Peg provides a rare opportunity that helps in the understanding of other CV systems. / Department of Physics and Astronomy

Thesis (M.S.)--Auburn University, 2007. / Abstract. Vita. Includes bibliographic references.

No description available.

Most universities have their own gift shop to represent the pride of the students who love university brand’s products. Some universities have created innovation gift shops with special features to differentiate themselves from ordinary traditional gift shops in order to promote their gifts and create university brand awareness. For example, Waseda University’s Co-Op stores that operates as the university’s gift shop is a combination between gift shop and coffee shop where Waseda students can come right in, order a cup of coffee and spend time to mingle with their peers. There is no doubt that when Waseda students are walking into the coffee shop, they will have a chance to see, and even be tempted to purchase, their university’s gifts and souvenirs. In Taiwan, we can say that National Cheng Chi University (NCCU) is one of the biggest and most famous universities in Taiwan. However, as of today NCCU gift shop is still operated under the name of Alumni service center, which is hardly capable of managing full operation to support sale and promotion of NCCU gifts and souvenirs. According to the survey conducted at NCCU, approximately 40 per cent of the sample group does not know where to buy gifts and souvenirs. Half of the group states that they are not planning go there. However, good news is that 80 per cent still wants to purchase NCCU gifts and souvenirs. All this information indicates that the demand for gifts and souvenirs is still high but NCCU still lacks a marketing initiative, clearly-identified sale channels and a suitable business model to support university gift shop. This new NCCU gift and coffee shop will beautifully offer a relaxing and serene space for both local and foreign NCCU students to do their studies, to meet with their friends or to exchange their worldviews, languages and cultures. This possible channel will also drive the number of students purchasing NCCU gifts and souvenirs. In addition, the new attraction will bring economic benefits to established stores. Creating a new sale channel and promoting products are primary keys to a successful business model, as it will guarantee long-term accomplishment of the NCCU gift shop and the sustainability of the model.

No sul do Brasil, zonas de cisalhamento tem um papel importante na geração e posicionamento de magmas graníticos e básicos. As zonas de cisalhamento transcorrentes Quitéria-Serra do Erval (ZCQSE) e Dorsal de Canguçu (ZCTDC) fazem parte do Cinturão de Cisalhamento Sul brasileiro (CCSb), uma descontinuidade formada no Neoproterozoico, que compreende zonas de cisalhamento kilométricas, anastomosadas, de escala crustal, com cinemática predominantemente transcorrente, e estão relacionadas com a construção de um extenso batólito de quase 1000 Km (650-575Ma). Seu desenvolvimento iniciou após a colisão principal (ca. 650 Ma) entre os cratons Rio de La Plata e Kalahari. A ZCQSE controlou o posicionamento do Granodiorito Cruzeiro do Sul (635Ma) e dos Diques Tardios granodioríticos a monzograníticos (605Ma), dos granitoides de afinidade tholetítica, Arroio Divisa (625Ma), e seu pulso mais evoluído, os Granitoide Sanga do Areal (620Ma). A presença de enclaves máficos contemporâneas com esses granitoides, indicam que fontes mantélicas foram ativas durante seus posicionamentos. Valores de ƐNd entre -3.32 a -10.93 e razões de 87Sr/86Sr(i) entre 0.7048 to 0.7223 obtidas para os granitoides da QSESZ sugerem fontes mantélicas com alguma componente crustal. Xenólitos das rochas encaixantes, como as do Complexo Arroio dos Ratos (2.14Ga), são interpretadas como parte da contaminação crustal. Os padrões geoquímicos dos granitoides da ZCQSE indicam fontes e processos de diferenciação similares para todas as unidades. Dados geocronológicos dos magmatismos shoshoniticos com idades entre 635 e 605 Ma definem o período mínimo de atividade tectônica e magmática da ZCQSE, assim como expandem o intervalo do magmatismo shoshonítico no sul do Brasil, indicando uma ativação precoce de fontes mantélicas no Batólito Pelotas. Estes magmatismos de natureza shoshonítica e tholeítica registram os estágios iniciais do CCSb (640 630Ma), em um ambiente pós-colisional, logo após a colisão principal (650Ma) no ciclo Brasiliano / Pan-Africano. Neste trabalho, complexos processos de fusão parcial de fontes mantélicas e crustais envolvendo influxo de água, fluxo de calor adicional através de injeções félsicas e máficas, mixing, mingling, e descompressão relacionada a atividade de zonas de cisalhamento durante mais de 30 Ma, são sugeridos. O magmatismo ao longo da ZCTDC teve seu início com o Granito Quitéria e foi seguido pelo Granito Arroio Francisquinho, o primeiro de derivação mantélica e o segundo de fusão crustal. Novos dados U-Pb SHRIMP do Granito Quitéria apontam uma idade de 634 Ma, interpretada como idade de cristalização. Para o Granito Arroio Francisquinho, a idade de cristalização obtida em monazita e nas bordas de zircões, foi cerca de 610 Ma. Estas idades definem o período principal da atividade tectônica e magmática da ZCTDC. Uma compilação extensiva de dados isotópicos do magmatismo dentro e fora dos três batólitos que compõe o CCSb e do seu embasamento, permitiu estimar o intervalo do magamtismo pós-colisional no sul do Brasil entre 640 e 560Ma, e o intervalo dos picos termais causados por esse magmatismo no embasamento, entre 650 e 560 Ma. As idades de cristalização, heranças e os dados de Sr-Nd compilados, levaram a conclusão que estes três segmentos devem ser tratados como um único batólito. / Crustal-scale shear zones play an important role in the generation and emplacement of granitic and basic magmatism within the Neoproterozoic post-collisional setting of southern Brazil. The strike-slip Quitéria-Serra do Erval Shear Zone (QSESZ) and the Dorsal de Canguçu Transcurrent Shear Zone (DCTSZ) are part of the Southern Brazilian Shear Belt (SBSB), a major crustal discontinuity formed in the Neoproterozoic, which comprises several km-wide, anastomosing shear zones of dominantly transcurrent kinematics and is related with the building of an extensive, nearly 1000 km long batholith (650-575Ma). Its development is thought to have initiated after the main collision (ca. 650 Ma) between the Río de la Plata and Kalahari cratons. The QSESZ has controlled the emplacement of the shoshonitic Cruzeiro do Sul Granodiorite (635Ma) and late granodiorite to monzogranite dikes (Late Dikes, 605Ma), the tholeiitic Arroio Divisa granitoids (625Ma) and its more evolved pulse, the Sanga do Areal (620Ma). The presence of mafic rocks coeval with each of these granite magmas, found as mingled mafic enclaves, indicates that mantle sources were active during their emplacement. ƐNd values of -3.32 to -10.93 and 87Sr/86Sr(i) ratios from 0.7048 to 0.7223 obtained for the QSESZ granitoids suggest mantle sources with some evolved sources such as old continental crust. Host-rock xenoliths of the Paleoproterozoic Arroio dos Ratos Complex (2.14 Ga) are interpreted as crustal contaminants. Geochemical trends indicate similar sources and processes of differentiation for the QSESZ granitoids. Geochronological data of the QSESZ shoshonitic magmatisms indicates ages between 635 and 605 Ma and defines the minimum period of magmatic and tectonic activity of the Quitéria-Serra do Erval Shear Zone, as well as expand the time span for the shoshonitic magmatism in southern Brazil indicating an early activation of mantle sources in the Pelotas Batholith. These magmatisms of shoshonitic and tholeiitic nature records the initial stages of the SBSB (640 - 630Ma) in a post-collisional period, just after the Brasiliano / Pan-African main collisional event (650Ma). A complex process of partial melting of mantle and crustal sources involving water influx, additional heat flux from felsic and mafic injections, mixing, mingling and decompression related to the shear zone activity over 30 Ma duration is suggested. Magmatism emplaced along the DCTSZ has started with the mantle-derived Quitéria Granite and was followed by crustal melts such as the Arroio Francisquinho Granite (AFG). New U-Pb SHRIMP zircon data from the Quitéria Granite yielded a value of 634 Ma, interpreted as its crystallization age. The AFG crystallization age obtained in monazite, and zircon outer rims is ca. 610 Ma. The ages of these granites define the main period of coeval tectonic and magmatic activity of the DCTSZ. An extensive isotope data compilation of the magmatism within and outside the SBSB three batholith segments and its basement allows to estimate the time span of postcollisional magmatism in southern Brazil from 640 to 560 Ma, and the interval of the main thermal effects on the basement between 650 and 560 Ma. The crystallization/inherited ages and the Sr-Nd isotope data, lead to conclude that three segments should be addressed as a single batholith.

This thesis examines the nature of war and its impact on society in the English civil war, known as the Barons’ War, which was waged from1264-67 between King Henry III and a baronial opposition led by Simon de Montfort, earl of Leicester. This is the first dedicated major study of the civil war as a war rather than as a political or constitutional event. While several of the war’s important campaigns have received individual study, the broader issues of the war, like the state and use of castles and town defences, guerrilla warfare and the impact of these on society have not received the same attention. Military history in general has received comparatively little study from the early to mid-thirteenth century and this thesis seeks to examine potential military developments between the civil war of 1215-17; the wars of Edward I in the late-thirteenth century and the Barons’ War’s possible impact upon these. Chapter one contextualizes the military experience and the types of men engaged in the civil war; the methods of recruitment and the general ‘customs of war’. This discussion will inform the discussion in the rest of the thesis. While castles were a crucial aspect of medieval warfare their role in 1263-1267 remains little studied, despite a considerable body of surviving documentation relating to them. Chapter two will therefore focus on the role, state and struggle for control of castles, particularly royal castles on the eve of the war. Chapter three will examine their use and effectiveness in warfare, the techniques and problems of besieging them and, in particular, will utilize a number of illustrative case studies of major sieges in the conflict. The fourth chapter will examine the previously unexamined role of town defences in the war, particularly their state and effectiveness. In chapter five, the thesis will bring a fresh focus by discussing the use of the wilderness by both sides as a tool of resistance, with its principal focus on the war waged by the Disinherited after the battle of Evesham until 1267 and its impact and significance. The final chapter examines the nature of warfare at a very local level, exploring how the issues and events described in the former chapters impacted on communities and also more local participation in waging war as well as examining the blurred lines between warfare and crime. The appendices include a discussion of the involvement of Robert de Ferrers, earl of Derby in the largely unexplored events of the siege of Gloucester in 1264.

Gel-precipitated (U, Th) spheres produced at AERE Harwell, were investigated to study the development of the structure of the gel spheres at various stages of production. Various parameters including surface area, true (matrix) and geometric densities, porosity, crystallite size, compliance and related properties were investigated. A careful examination of whole and cleaved spheres by Scanning Electron Microscope was also carried out. The xerogel spheres were debonded in a tubular furnace in an atmosphere of CO[2] to remove or decompose the gelling agent (polymer) and other volatiles which might be present. The isothermal and constant-rate-of-heating (CRH) sintering behaviour of partially and fully debonded spheres were studied. In the latter work the shrinkage data of a batch of spheres were obtained from geometric (Hg) density measurements instead of the conventional dilatometric method used for pellets. The study has shown that ageing and heavy metal composition have a substantial influence on the structure of the debonded spheres, the rate of sintering, and the microstructure of the sintered products. Ageing and increasing amount of thorium generally retards sintering. Partially debonded (to 750°C) spheres sinter faster than fully debonded spheres and the former also develop larger grains on sintering. Gel-precipitation is a versatile technique which can be used to produce spheres which sinter to > 98% of the theoretical density at a comparatively low temperature (≈ 1400 C). Grain-boundary diffusion was found to be the probable dominant material transport mechanism in the sintering of (U, 30% Th)O[2].

La presente memoria muestra el diseño e implementación de un ambiente de trabajo, basado en tecnología web, que facilite el desarrollo de las actividades grupales requeridas en las actividades docentes de la Facultad de Ciencias Físicas y Matemáticas de la Universidad de Chile (FCFM). Inicialmente se realizó una encuesta dirigida a estudiantes y profesores usuarios de la plataforma web de apoyo a la docencia presencial U-Cursos. A partir de los resultados obtenidos, junto al análisis de un conjunto de entrevistas realizadas a diversas autoridades y académicos, se determinaron las especificaciones de diseño del sistema. Este estudio identificó tres aspectos fundamentales que debían ser cubiertos: las diversas formas de armar los grupos, los servicios disponibles para los grupos de estudiantes y la integración del sistema con U-Cursos. Posteriormente se realizó un análisis del diseño funcional de U-Cursos y de su modelo de datos. Con los requerimientos de diseño y análisis de la plataforma U-Cursos, se desarrolló un prototipo que fue validado por profesores y por el equipo de diseño del Área de Infotecnologías de la FCFM. Finalmente se construyó la primera versión de la solución, la cual fue aprobada en pre-producción. El diseño de la solución contempló un módulo para profesores y otro para estudiantes. En el primero los profesores pueden designar la forma de crear los grupos, crear grupos, modificar grupos, asignar integrantes, designar roles a los integrantes, ingresar notas grupales, enviar correos, entre otras funcionalidades. En el segundo, los estudiantes pueden inscribirse en los grupos, ver los grupos creados, entregar tareas de manera grupal, enviar correos a sus compañeros de grupos, compartir archivos en cualquier formatos, links de interés, abrir temas en el foro de grupos, hacer uso del calendario de actividades grupales, realizar votaciones al interior del grupo, entre otros. La solución diseñada permitirá mejorar la experiencia obtenida por estudiantes y profesores al desarrollar las actividades de trabajo grupal y, al mismo tiempo aportar al desarrollo de las habilidades de trabajo en equipo, elemento constituyente del perfil del ingeniero desarrollado por la Comisión de Desarrollo Docente de la FCFM.

The aim was to create a literature review on the site, to find sources of archival image, photo documentation of structure during repair, an overall analysis of the structure and classification according to the typology of the shape and type of construction and dendrochronological datig. When comparing literary and pictorial sources was agreed. Dendrochronological dating design provided an approximate date of construction. Shape classification structure has been successful design solution is beyond the commonly used methods.

The main objective of this work was to evaluate the dynamics of CO2 and CH4 emissions from wetland soil of the sedge-grass marsh, which belongs to large complex of wet meadows near Třeboň town. CO2 and CH4 emission measurements realized on six places, where gas emission collars permanently inserted. Finally, samples of air were taking with using manual emission gas chambers within period from April 25th to November 24th 2014. The highest fluxes of CO2 were recorded in June and July. The lowest water level was recorded in this period together with low fluxes of CH4. Methane emissions were higher in September and October at the time where water level was above soil surface. Range of CO2-C fluxes was -9.38 mg m-2 h-1 (consumption) to 147.84 mg m-2 h-1 (emission). Range of CH4-C fluxes was -14.94 ?g m-2 h-1 (consumption) to 5561.67 ?g m-2 h-1(emission).