364 research outputs found

    Siegfried Frech/Michael Haspel (2005): Menschenrechte. Schwalbach/Ts.: Wochenschau Verlag, 285 S. [Rezension]

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    Rezension zu: Siegfried Frech/Michael Haspel (2005): Menschenrechte. Schwalbach/Ts.: Wochenschau Verlag, 285 S., ISBN 3-89974218-

    The Right to City in Argentina: Building Capacity through Hecho en Buenos Aires, a Street Newspaper

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    As the new millennium unfolds, many activists and scholars have responded to enduring inequality in urban environments by embracing French philosopher Henri Lefebvre\u27s writings on the right to the city as a rallying cry and demand. In an effort to contribute to this dialogue, this thesis explores the concept of the right to the city by operationalizing it as a theoretical framework rooted in Lefebvre’s original writings and applying it o a grounded examination of the street newspaper Hecho en Buenos Aires to examine the intersection of right to the city theory and practice. This investigation finds that the organization seems to advance the right to the city in Buenos Aires albeit without embracing its rhetoric. The organization does this, first, by developing the individual capacity of individuals in situación de calle through integrated, holistic programs that promote autogestión and, second, by creating opportunities for those same individuals to appropriate urban space and participate in urban processes - two actions key to Lefebvre\u27s radical and transformative right to the city. The investigation finds evidence, moreover, to suggest that the organization as a whole seeks radical, transformative change in alignment with Lefebvre\u27s conceptualization of the right to the city. These preliminary findings are closely contextualized by the historical specificity of Argentina, but may be used to inform the work of other street newspaper organizations operating in other Latin American countries or even in other developing world regions

    Akzeptanz, Lernprozess und Lernerfolg in virtuellen Seminaren - Wirkungsanalyse eines problemorientierten Seminarkonzepts

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    This study deals with the learning effects of a problem oriented virtual seminar concept that is part of the regular study program of the Ludwig Maximilian University of Munich and of the Bavarian Virtual University. First, we describe the design principles of problem-based learning environments and their possible implementations in virtual seminars. Two virtual seminars designed according to this concept and with different contents, „The Design and Evaluation of Virtual Learning Environments“ and „Introduction to the Knowledge Management from Educational and Psychological Perspective“ are being evaluated. Therefore acceptance, learning process and learning outcome are investigated. It is shown that the seminar concept takes full advantage of the problem-based learning: The learners accept the virtual seminars to a high degree; their high motivation and their perceptions of the discussed problems correlate highly with each another; they evidently acquire domain knowledge and skills. However, as known from research literature, problem-based learning seems to support the acquisition of skills more than the acquisition of theoretical knowledge, which raises questions about the further development of the seminar concept.Der vorliegende Beitrag beschäftigt sich mit der Wirkung eines problemorientierten virtuellen Seminarkonzepts, das integraler Bestandteil des regulären Studienangebots der Ludwig-Maximilians-Universität München und der Virtuellen Hochschule Bayern ist. Zunächst werden die Gestaltungsprinzipien problemorientierter Lernumgebungen und deren Umsetzungsmöglichkeiten in virtuellen Seminaren erläutert. Zwei nach diesem Konzept gestaltete Seminare aus unterschiedlichen Domänen („Gestaltung und Evaluation problemorientierter Lernumgebungen“ und „Einführung in das Wissensmanagement aus pädagogisch-psychologischer Perspektive“) sollen vorgestellt werden. Zur Wirkungsanalyse dieser beiden Seminare werden die Akzeptanz, der Lernprozess und der Lernerfolg erhoben. Die Ergebnisse der Analyse weisen darauf hin, dass die Lernenden die virtuellen Seminare in hohem Maße akzeptieren. Ebenfalls positive Befunde können in Hinblick auf den Lernprozess (auf motivationaler, kognitiver und sozialer Ebene) bescheinigt werden. Theoretisches Fakten- und Konzeptwissen sowie Anwendungswissen werden von den Lernenden nachweislich erworben. Letzteres zeigt im Vergleich zu Fakten- und Konzeptwissen jedoch auffallend höhere Scores, was Fragen hinsichtlich der Weiterentwicklung des Seminarkonzepts aufwirft

    Steady-state evoked potentials possibilities for mental-state estimation

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    The use of the human steady-state evoked potential (SSEP) as a possible measure of mental-state estimation is explored. A method for evoking a visual response to a sum-of-ten sine waves is presented. This approach provides simultaneous multiple frequency measurements of the human EEG to the evoking stimulus in terms of describing functions (gain and phase) and remnant spectra. Ways in which these quantities vary with the addition of performance tasks (manual tracking, grammatical reasoning, and decision making) are presented. Models of the describing function measures can be formulated using systems engineering technology. Relationships between model parameters and performance scores during manual tracking are discussed. Problems of unresponsiveness and lack of repeatability of subject responses are addressed in terms of a need for loop closure of the SSEP. A technique to achieve loop closure using a lock-in amplifier approach is presented. Results of a study designed to test the effectiveness of using feedback to consciously connect humans to their evoked response are presented. Findings indicate that conscious control of EEG is possible. Implications of these results in terms of secondary tasks for mental-state estimation and brain actuated control are addressed

    Detektion och kvantifiering av mögel på spannmål med realtids PCR

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    Tillväxt av mögel och jäst är ett problem vid lagring av spannmål ensilage och andra fodermedel. Traditionella metoder för identifiering och kvantifiering av sådana mikrosvampar är tidskrävande och mödosamma. Det finns därför ett behov för att utveckla nya, snabba och pålitliga förfaranden för identifiering och kvantifiering. Vi har utvecklat en molekylär metod som kan används för kvantifiering av mögel och jäst som växer på spannmål eller andra fodermedel. Förfarandet är baserat på direkt isolering av mikroorganismernas DNA från spannmål och kvantifiering av organismspecifika gener med realtids-PCR. Metoden utprovades i ett projekt för odling av mycelväxade svamp (Rhizopus oligosporus) och jäst (Saccharomyces cerevisiae) på korn. En enkel DNA-extraktion var effektiv för mögel, jäst och även mjölksyrabakterier. Koncentrationen av organismspecifika gener (determinerade i realtids PCR) korrelerade med ergosterolhalten (som indikerar svamptillväxt) i R. oligosporus ren kultur och med antal kolonibildande enheter av jäst och mjölksyrabakterier. Detektionen var mycket specifik för de testade organism, och ingen korsdetektion upptäcktes. Förfarandet är snabbt och pålitligt med möjlighetet till analys av 50 prover under två dagar. Metoden kan antagligen användas för detektion och kvantifiering av även andra mögelarter på andra sorts spannmål. Man kan även identifiera specifika gener, t.ex. gener som är involverade i mykotoxinproduktionen
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