205 research outputs found
Roland Reichenbach/Patrick Bühler (Hrsg.): Fragmente zu einer pädagogischen Theorie der Schule. Erziehungswissenschaftliche Perspektiven auf eine Leerstelle. Weinheim, Basel: Beltz Juventa 2017 (224 S.) [Rezension]
No full textRezension von: Roland Reichenbach/Patrick Bühler (Hrsg.): Fragmente zu einer pädagogischen Theorie der Schule. Erziehungswissenschaftliche Perspektiven auf eine Leerstelle. Weinheim, Basel: Beltz Juventa 2017 (224 S.; ISBN 978-3-7799-3746-3; 24,95 EUR)
Picus fuliginosus Reichenbach
No full textPicus fuliginosus Reichenbach Picus fuliginosus Lichtenstein, 1825 [Unpublished manuscript name.] Picus fuliginosus Lichtenstein, 1854: 75 [Nomen nudum; no description or indication.] Picus fuliginosus “Lichtst.” Reichenbach, 1854: 378, pl. DCXL, fig. 4269–4270. Now. Dendrocopos syriacus syriacus (Hemprich & Ehrenberg, 1833). See Hartert (1911: 911). Type series. Not specified by Reichenbach (1854). Lichtenstein (1825, 1854) studied both specimens upon which Hemprich and Ehrenberg (1833) based their Picus syriacus. The type series of Picus fuliginosus Reichenbach, 1854 is thus the same as for Picus syriacus Hemprich & Ehrenberg, 1833. Type locality. Same as for Picus syriacus. Remarks. Reichenbach (1854: 378) attributed this species name to Lichtenstein, but he is its author (ICZN 1999, Art. 51.1). Picus fuliginosus Reichenbach, 1854 is an objective junior synonym of Picus syriacus Hemprich & Ehrenberg, 1833 = Dendrocopos syriacus (Hemprich & Ehrenberg, 1833). See also under Picus syriacus Hemprich & Ehrenberg.Published as part of Mlíkovský, Jiří & Frahnert, Sylke, 2011, Type specimens and type localities of birds collected during the Hemprich and Ehrenberg expedition to Lebanon in 1824, pp. 1-29 in Zootaxa 2990 on page 5, DOI: 10.5281/zenodo.27840
Carlão Reichenbach
No full textEste artigo apresenta o cineasta Carlos Reichenbach pelo ponto de vista de seu ex-aluno, assistente e co-roteirista, numa análise inevitavelmente pessoal da obra e do artista, autor de filmes como O império do desejo, Filme demência, Alma corsária e Falsa loura. Reichenbach se adaptou como poucos aos ciclos e guinadas da produção cinematográfica brasileira. De 1968 a 2007 dirigiu 19 filmes de longa metragem, incluindo a participação em quatro longas de episódios. Foi roteirista, produtor, músico, ator, professor, crítico, programador e diretor de fotografia. Sua real importância para o cinema mundial ainda está por ser descoberta.This article presents the filmmaker Carlos Reichenbach from the point of view of his ex-student, assistant in four feature films and co-writer, in an unavoidably personal analysis of the films and the artist, author of O império do desejo (The Empire of Desire), Filme demência, Alma corsária (Buccaneer Soul) and Falsa loura (Fake Blonde), among others. Reichenbach knew as few others how to adapt to the cycles and turn-overs of the Brazilian cinematographic production. From 1968 to 2007 he directed 19 feature films, including episodes in four anthology films. He was a screenwriter, producer, musician, actor, critic, programmer and director of photography. His real importance to world cinema is yet to be discovered
Reichenbach, Prior and hybrid tense logic
No full textIn this paper we combine central insights of Prior and Reichenbach in the framework of hybrid tense logic. We do so in a way that overcomes a well-known defect of Reichenbach’s original tense schema, namely that it gives multiple representations to sentences in the Future perfect and the Future-in-the-past. Moreover, we define an iterative schema that allows for multiple points of reference, a possibility noted by Prior and demanded by Comrie, and sketch how this schema can be generalized to a shift-and-restrict paradigm in which special propositional symbols (for adverbials and indexicals) act as restrictors on the range of tense operators.In this paper we argue that Prior and Reichenbach are best viewed as allies, not antagonists. We do so by combining the central insights of Prior and Reichenbach in the framework of hybrid tense logic. This overcomes a well-known defect of Reichenbach’s tense schema, namely that it gives multiple representations to sentences in the future perfect and the future-in-the-past. It also makes it easy to define an iterative schema for tense that allows for multiple points of reference, a possibility noted by Prior and demanded by Comrie, and we sketch how this schema can be generalized to a shift-and-restrict pattern in which special propositional symbols (for adverbials and indexicals) act as restrictors on the range of tense operators.</p
Reichenbach: el empirismo se quedó sin inducción
No full textSer empirista consecuente significa tomar como base del conocimiento la experiencia, y si el empirista propone la inducción como método para conocer, entonces tiene que abandonar su “exceso” de experiencia y su empirismo radical. Esto se debe a que la inducción es un método no analítico que no puede ser considerado como un producto de la experiencia y, si no se basa en ella, entonces no es correcto afirmar que ésta sea la fuente exclusiva del conocimiento. De ahí su dilema: si admite el principio inductivo, debe abandonar su empirismo radical; si defiende su empirismo radical, debe abandonar el principio inductivo. Reichenbach aseveró que el abandono de la inducción por parte del empirista conduce a la aceptación de la imposibilidad de predicción. Por lo tanto, se le están poniendo límites al conocimiento y esto puede conducirnos al agnosticismo. En todo caso, Reichenbach no compartió el “quietismo” de Hume. La solución de Hume no fue correcta; fue psicológica, y si el problema de la inducción continuaba intacto, Reichenbach propuso aceptar la solución incorrecta de Hume y averiguar más bien si se trata de un buen o un mal hábito. Propuso utilizarla para validar teorías. Es decir, asoció la inducción al contexto de la validación. El autor propone que tal salida sigue siendo psicológica: se sigue huyendo del problema lógico para no renunciar a la inducción.For a true empiricist, knowledge can only be derived from experience. If an empiricist we- re to propose induction as a method for apprehending, then the experience “excess” of radical empiricism would be forsaken. This because induction is a non-analytic method that can- not be considered as a yield of sense experience, and if not based on experience, it would then be incorrect to advocate experience as the sole source of knowledge. Thus the dilemma of the radical empiricist: if the principie of induction is acknowledged, radical empiricism is abjured; if radical empiricism is upheld, then the principle of induction needs be abandoned. Reichenbach argued that by forsaking induction the empiricist must then accept prediction as impossible, thereby limiting knowledge and enticing agnosticism. In any case, Reichenbach did not acquiesce to Hume's “quietism”. Hume’s solution was not correct, it was psychological; wherefore the question of induction remained unaffected. Thus Reichenbach propounded to accept Hume’s incorrect solution at that, and in any case inquire whether induction was a good or a bad habit. Reichenbach’s proposal was to use induction to valídate theories, that is, he linked induction to the realm of validation. The author contends that this other solution is still psychological, and that the logical problem is being eluded in order not to relinquish induction
Euthanasia and the Active-Passive Distinction
No full textThe author examines various claimed differences between active and
passive euthanasia and, if there are differences, whether they are morally
significant. He refutes arguments based on acting vs. not acting, intention,
double effect, cause of death, and natural law theory. Reichenbach proposes
that the most helpful distinction is the one between intentional killing
(active euthanasia) and appropriate treatment for the dying or terminally ill
(passive euthanasia). Significant moral difference, however, rests on the
contention that intentional killing is always wrong and that, all else being
equal, dying by natural means is intrinsically good, whereas dying by
unnatural means is not. (KIE abstract
Reichenbach and the problem of induction
No full textThesis (M.A.)-- Wichita State University, College of Liberal Arts and Sciences, Dept. of PhilosophyThe research which resulted in this thesis began with the intention of providing an analysis of the general problem of justifying induction. The reading of a broad sample of the writings of a number of authors soon revealed, however, that an analysis of the general problem of the justification was too broad a topic for a Master's Thesis. However, this reading revealed that one author, Hans Reichenbach, had provided probably the most significant contribution on the problem since Hume. Thus, a decision was made to narrow the topic to a consideration of Reichenbach's theory of induction.
Biographical facts about Reichenbach include the following: He was born in Hamburg, Germany, in 1891, and he died in California in 1953. He successively served as Privatdozent of the College of Engineering at Stuttgart, Professor of philosophy in the universities of Berlin, Istanbul, and California. He has been recognized as the leading figure of the "Berlin group" in the development of recent logical empiricism.
All sources of material have been properly documented in the thesis, but one source should be emphasized. While I have not duplicated his arguments, several important ideas contained in Chapter Three were inspired by portions of Jerrold Katz's excellent book, The Problem of Induction and Its Solution. Even so, my conclusions are quite different from those reached by KatzI. Introduction -- II.Induction: The frequency interpretation -- III. Induction: The justification -- IV. Some concluding remak
Specific binding of telomeric G-quadruplexes by hydrosoluble perylene derivatives inhibits repeat addition processivity of human telomerase
No full textTelomerase is responsible for the immortal phenotype of cancer cells and telomerase inhibition may specifically target cancer cell proliferation. Ligands able to selectively bind to G-quadruplex telomeric DNA have been considered as telomerase inhibitors but their mechanisms of action have often been deduced from a non-quantitative telomerase activity assay (TRAP assay) that involves a PCR step and that does not provide insight on the mechanism of inhibition. Furthermore, quadruplex ligands have also been shown to exert their effects by affecting association of telomere binding proteins with telomeres. Here, we use quantitative direct telomerase activity assays to evaluate the strength and mechanism of action of hydrosoluble perylene diimides (HPDIs). HPDIs contain a perylene moiety and different numbers of positively charged side chains. Side chain features vary with regard to number and distances of the charges. IC50 values of HPDIs were in the low micromolar (0.5-5 mu M) range depending on the number and features of the side chains. HPDIs having four side chains emerged as the best compounds of this series. Analysis of primer elongation products demonstrated that at low HPDI concentrations, telomerase inhibition involved formation of telomeric G-quadruplex structures, which inhibited further elongation by telomerase. At high HPDI concentrations, telomerase inhibition occurred independently of G-quadruplex formation of the substrate. The mechanism of action of HPDIs and their specific binding to G-quadruplex DNA was supported by PAGE analysis, CD spectroscopy and ESI-MS. Finally, competition Telospot experiments with duplex DNA indicated specific binding of HPDIs to the single-stranded telomeric substrates over double stranded DNA, a result supported by competitive ESI-MS. Altogether, our results indicate that HPDIs act by stabilizing G-quadruplex structures in single-stranded telomeric DNA, which in turn prevents repeat addition processivity of telomerase. (C) 2011 Elsevier Masson SAS. All rights reserved
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