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Univ., Diss.--Göttingen, 1996. / Literaturverz. S. 185 - 198.

Thesis (doctoral)--Augsburg, 2002. / Includes bibliographical references (p. 225-237) and index.

Thesis (doctoral)--Philipps-Universität, Marburg/Lahn. / Includes bibliographical references (p. [315]-327).

Keller's Personalized System of Instruction (PSI) uses small units of instruction, self-pacing, mastery learning, lectures for motivation, and proctors for immediate feedback. While highly successful in the early 1970's, PSI fell out of favor for a variety of reasons. This developmental dissertation resurrects Keller's system in its purest form and uses PSI for an online Master's program. Using Cold Fusion™ and Dreamweaver™ an online Keller experience was created. Experts of PSI reviewed the product to check for fidelity to Keller's ideas. Formative and summative evaluation showed that this system of instruction is viable for the online environment. Recommendations and implications for future use are discussed. / Ph. D.

Zugl.: Toronto, Univ., Diss.

Made available in DSpace on 2015-03-26T13:53:13Z (GMT). No. of bitstreams: 1 texto completo.pdf: 3214243 bytes, checksum: 9594a0e8832b60dfa2edda6f97dc2552 (MD5) Previous issue date: 2010-02-12 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / Located on Admiralty Bay, King George Island, Keller Peninsula has an area of approximately six square kilometers and there are records of presence of basalt, volcanic tuff, basalt-andesite and andesite in the geologic base. The latter two show veins of sulfides of late mineralizationhave high levels of sulfides, which shows a natural potential generation of acid rock drainage. In order to analyze the presence and influence of the acid rock drainage process on the availability of metals in water discharged into the sea in the Keller Peninsula, water samples at various points in watercourse to the sea, were collected during the months of February and March 2009, on different lithologies and drainage basin. Sediment samples were also collected from the bottom of the waterways. The water samples were acidified and filtered on cellulose ester membrane of porosity 0.45 μm. Were determined the following elements by Spectrophotometry of Optical Emission in Induzed Plasma: Al, As, B, Cd, Co, Cr, Cu, Fe, K, Mn, Mo, Ni, Pb, S, Ti, V, Zn. The chemical conditions of water samples showed pH values close to neutrality even in close proximity of sulfide deposits and in some places, even on these. It was observed that the drainage basin are divided between: a) basins strongly affected by sulfides oxidation; b) basins affected by sulfides oxidation and c) basins not affected by sulfides oxidation. It was also found that concentrations of ions in solution were always higher in the watershed affected by sulfides indicating a breakthrough in the chemical weathering process in these areas. Four sulfide deposits not previously reported in geological manuscripts were recorded and it was observed that these are always associated with geological faults. Among the secondary minerals dominated the species of the jarosite, as well as the Schwertmannite and other low crystallinity minerals. The presence of low crystallinity minerals, with high adsorption capacity minerals, founded too in beaches and marine terraces, suggests that a large portion of the concentration recorded in the waterways is not actually available in the pH environmental conditions recorded at the time of samples collection. Moreover, although the secondary minerals observed are of high instability it was not observed more crystalline forms of oxides and Iron oxyhydroxides. Due to the chemical conditions of pH of the samples recorded at the time of collection it is suggested that the term acid rock drainage is not suitable for this case. The process that occurs in the Keller Peninsula is the occasional generation of acidic waters influenced by the dynamics oxidation of sulfides, its soil gradation and mineral species, and against neutralization by melting and consumption of acidity by carbonates and silicates. / Localizada na Baía do Almirantado, Ilha Rei George, a Península Keller possui uma área de aproximadamente seis quilômetros quadrados e registra a presença de basaltos, tufos vulcânicos, basaltos-andesítos e andesitos em sua base geológica. As duas últimas apresentam veios de sulfetos de mineralização tardia, revelando um potencial natural de geração da drenagem ácida. Com o objetivo de analisar a presença e influência do processo de drenagem ácida sobre a disponibilidade de metais nas águas lançadas ao mar na Península Keller, foram coletadas, durante os meses de fevereiro e março de 2009, amostras de água em diversos pontos dos cursos d água até o mar, sobre diferentes litologias e bacias de contribuição. Também foram coletas amostras do sedimento de corrente dos canais. As amostras de água foram acidificadas e filtradas em membrana de ésteres celulose de porosidade 0,45 μm. Foram dosados os seguintes elementos por Espectofotômetria de Emissão Ótica em Plasma Induzido: Al, As, B, Cd, Co, Cr, Cu, Fe, K, S, Mn, Mo, Ni, Pb, S, Ti, V, Zn. Cloreto, brometo, fluoreto, e sulfato foram analisados em Cromatógrafo de Troca Iônica. As condições químicas das amostras de água revelaram valores de pH próximos da neutralidade mesmo em locais muito próximos dos depósitos sulfetados e, em alguns locais, mesmo sobre esses. Registrou-se que as bacias de contribuição dividem-se entre: a) fortemente afetadas pela oxidação de sulfetos; b) moderadamente afetadas pela oxidação de sulfetos, e; c) não afetadas pela oxidação de sulfetos. As concentrações dos íons em solução foram sempre maiores nas bacias afetadas por sulfetos, indicando um avanço do processo de intemperismo químico nessas áreas. Foram observados quatro depósitos de sulfetos não relatados anteriormente em registros geológicos da Península Keller. Os depósitos encontram-se sempre associados às falhas geológicas. Dentre os minerais secundários presentes, dominaram as espécies da família da jarosita, com destaque para a Schwertmanita, e outros minerais de baixa cristalinidade. A presença de minerais de baixa cristalinidade, com elevada capacidade de adsorção, encontrados também nas praias e terraços marinhos, sugere que grande porção da concentração iônica nas águas acidificadas não está efetivamente disponível nas condições ambientais de pH registradas em campo. Ademais, ainda que os minerais secundários constatados sejam de elevada instabilidade, não foram observados formas mais cristalinas de óxidos e óxihidróxidos de Ferro. Devido às condições químicas de pH encontradas em campo sugere-se que o termo drenagem ácida não é adequado a este estudo de caso. O processo que ocorre na Península Keller é a geração pontual de águas ácidas, influenciadas pela dinâmica de oxidação de sulfetos, sua granulometria e espécies minerais associados, e contra a neutralização por silicatos e carbonatos, bem como, diluição da acidez pelo degelo.

The polynomial maps whose Jacobian determinant is equal to 1 are called Keller maps. The Keller Jacobian conjecture claims that every Kellermap is injective. This conjecture is true for polynomials whose degree is less than or equal to two. In this paper we prove that the general casereduces to the study of the injectivity of maps of the form z 7! z+H(z),where the nonzero components of H are homogeneous polynomials of degree three, and every Jacobian matrix DH(z) is nilpotent. / A las aplicaciones polinomiales con el determinante de su matriz jacobiana igual a 1 se las llama aplicaciones de Keller. Segun la conjetura jacobiana de Keller, cada aplicacion de Keller es inyectiva. Tal conjetura es verdadera para las aplicaciones polinomiales de grado menor o igual a dos. En el presente trabajo tambien se muestra que el caso general se reduce a estudiar la inyectividad de aplicaciones de la forma z 7! z +H(z); donde las componentes no nulas de H son polinomios homogéneos de grado tres y cada matriz Jacobiana DH(z) es nilpotente.

My dissertation, Ways of Living: An Ethical Realism in the Prose of Gottfried Keller, takes as its focus the extensive discourse in mid-nineteenth century German letters on what constitutes a properly “realist” work of literature. My study examines three major works by Gottfried Keller: Der grüne Heinrich, the Leute von Seldwyla cycle, and the political satire Martin Salander. I consider these prose works as a response firstly to the call by critics like Julian Schmidt and Gustav Freytag for a return to das Reale, as they called it, and secondly to the contemporaneous developments in the French and English novel. Keller, I argue, is less interested in offering a comprehensive social portrait of his native Switzerland than he is in exploring contrasting ethics, or modes of disposition towards the world: resentment and affirmation, parsimoniousness and wastefulness, sensuality and renunciation. To this end, Keller uses the familiar structures of Realist prose, like the construction of characters as types, the extensive description of physical objects, or the use of narrative topoi like the marriage plot, to dramatize conflicts between various Lebensarten: self-sacrifice in service of an unattainable ideal or fleeting happiness in the here and now, for example. For Keller, then, the “objectivity” championed by the Realists is above all a way of directing the reader’s attention towards the crises of value underpinning the most unremarkable of people and the most mundane of occupations. In Keller’s prose, I conclude, Realism is less an aesthetic program than a way of comporting oneself, a survival mechanism by means of which the hard truths of life, above all the vanity of human endeavor and the painful renunciations demanded by the world of work, are poeticized in order to make them bearable.

Many international higher education students do not study in their native languages. Unlike their peers who would only worry about the content of the course, they also struggle with the difficulties of the language of instruction. Flipped classrooms, providing students with the learning materials prior to the class, may assist in alleviating the academic burden and the language challenge the international students are experiencing. The purpose of this study was to gain insight into how flipped classrooms may help international students with course engagement and their adaptation processes. The conceptual framework was Keller's personalized system of instruction. The research questions in this basic qualitative study focused on understanding the experiences of international students with the flipped classroom. Semi-structured interviews were conducted with 12 international higher education students currently studying at a Polish university in a flipped classroom format. Data from the interviews were coded, and the following themes emerged during the analysis: international experience, flipped versus traditional, flipped classroom experience, and engagement in flipped classes. Results indicated a high approval rate of flipped classrooms among international students, and the PowerPoint presentations were the most preferred learning material during self-study. Hence, faculty members at Polish universities should consider the flipped classroom model to improve the learning experience for international students. Polish universities would benefit from an international student population and allowing them to overcome the initial language barriers and being successful will allow Poland access to potential employees with a global perspective.