The demarcation problem aims to articulate the boundary between science and pseudoscience. Solutions to the problem have been notably raised by the logical positivists (verificationism), Karl Popper (falsificationism), and Imre Lakatos (methodology of research programmes). Due, largely, to the conclusions drawn by Larry Laudan, in a pivotal 1981 paper which dismissed the problem of demarcation as a “pseudo-problem”, the issue was brushed aside for years. Recently, however, there has been a revival of attempts to reexamine the demarcation problem and synthesize new solutions. My aim is to survey two of the contemporary attempts and to assess these approaches over and against the broader historical trajectory of the demarcation problem. These are the efforts of Nicholas Maxwell (aim-oriented empiricism), and Paul Hoyningen-Huene (systematicity). I suggest that the main virtue of the new attempts is that they promote a self-reflexive character within the sciences. A modern demarcation criterion should be sensitive towards the dynamic character of the sciences. Using, as an example, a case study of Traditional Chinese Medicine, I also suggest that the potential for conflict between demarcation conclusions and the empirical success of a pseudoscientific discipline is problematic. I question whether it is sensible to reject, as pseudoscientific, a discipline which seems to display empirical success in cases where the rival paradigm, contemporary western medicine, is not successful. Ultimately, I argue that there are both good theoretical and good pragmatic grounds to support further investigation into a demarcation criterion and that Laudan’s dismissal of the problem was premature. / Graduate / 0422 / 0402

The demarcation problem aims to articulate the boundary between science and pseudoscience. Solutions to the problem have been notably raised by the logical positivists (verificationism), Karl Popper (falsificationism), and Imre Lakatos (methodology of research programmes). Due, largely, to the conclusions drawn by Larry Laudan, in a pivotal 1981 paper which dismissed the problem of demarcation as a “pseudo-problem”, the issue was brushed aside for years. Recently, however, there has been a revival of attempts to reexamine the demarcation problem and synthesize new solutions. My aim is to survey two of the contemporary attempts and to assess these approaches over and against the broader historical trajectory of the demarcation problem. These are the efforts of Nicholas Maxwell (aim-oriented empiricism), and Paul Hoyningen-Huene (systematicity). I suggest that the main virtue of the new attempts is that they promote a self-reflexive character within the sciences. A modern demarcation criterion should be sensitive towards the dynamic character of the sciences. Using, as an example, a case study of Traditional Chinese Medicine, I also suggest that the potential for conflict between demarcation conclusions and the empirical success of a pseudoscientific discipline is problematic. I question whether it is sensible to reject, as pseudoscientific, a discipline which seems to display empirical success in cases where the rival paradigm, contemporary western medicine, is not successful. Ultimately, I argue that there are both good theoretical and good pragmatic grounds to support further investigation into a demarcation criterion and that Laudan’s dismissal of the problem was premature. / Graduate / 0422 / 0402

「歷史決定論」(Historicism)最初並非是歷史學範疇當中的概念，而是源於哲學範疇中的學說。哲學範疇中的「決定論」(determinism)。決定論的思想內容，有「因果性」、「必然性」、「規律性」等可以清楚指稱的特徵，並且也有著認識與指導的作用存在。隨著各個時代裏的思想家對其內涵詮釋的轉換，才逐漸演變成處理社會歷史發展的歷史學問題。 經由馬克思（Karl Max, 1818-1883）的發揚光大，「歷史決定論」從歷史學中理論性的問題，又擴展到了政治哲學中關於政治實踐與行動的問題。「歷史決定論」與政治實踐與行動的結合，對於人類的歷史發展產生了重大的影響，卡爾‧波柏（Karl R. Popper, 1902-1994）與以賽亞‧伯林（Isaiah Berlin, 1909-1997）兩位二十世紀的著名思想家，注意到了其重大的影響當中之於人類的惡毒影響與嚴重的歷史後果。對於「歷史決定論」，波柏從「歷史決定論不符合科學方法的知識論層面切入，反駁歷史決定論試圖預測歷史是不可能的；伯林從「歷史決定論」是一種幻覺，預設一個烏托邦的美好未來卻造成二十世紀人類的極大災難，反駁歷史決定論將人類對於價值與生活目標的追求歸結為一的可怕後果。 波柏與伯林對於「歷史決定論」的批判引起了主張歷史決定論者之批評，波柏被批判為只從理論而非從實踐的角度，並且誤解了科學方法；伯林被批判為是一種虛無飄渺的相對主義。 儘管主張「歷史決定論」之批判從理據上言之亦有理，然而波柏與伯林對於「歷史決定論」的批判仍然足以引發世人對於「歷史決定論」與政治實踐與行動相結合之可能惡毒影響與嚴重的歷史後果。 對於波柏與伯林之於「歷史決定論」之討論，除了使人對於「歷史決定論」進行反思之外，亦可見「歷史決定論」之於兩位思想家之政治思想體系之重要性。

In this Master disertation the autor focuses on the great cello virtuoses of the 19. century and their technical studies. The first part is about their lives. Second one introduces the etudes and contains short subjective comparison. At the end is the list of the sources.

On peut sapercevoir, dans lhistoire de la philosophie, deux sens apparemment égaux mais réellement différents dans lemploi de lexpression sens commun. On propose de nommer sens commun naturel à lun deux et, à lautre, sens commun culturel, pour unifier raisonnablement chaque sens à lintérieur de sa pente, en considérant quil y a quelque chose de concret qui correspond à lun et à lautre, réciproquement, selon des définitions strictes. À partir de ces définitions, on étudie les rapports entre la philosophie et le sens commun, cherchant à établir jusquà quel point il sagit dune relation dantagonisme ou de dépendance, à la quête dune vraie connaissance. / Verifica-se, no correr da história da filosofia, dois sentidos próximos, mas divergentes, no emprego da expressão senso comum. Propõe-se a designação de senso comum natural para um e a de senso comum cultural para o outro, designações estas que unificam razoavelmente, dentro de suas próprias vertentes, os conceitos de senso comum e às quais corresponde algo de concreto, segundo definições estritas. A partir dessas definições, estuda-se o relacionamento entre a filosofia e o senso comum, procurando estabelecer até que ponto se trata de uma relação de antagonismo ou de dependência, na busca de um conhecimento que possa ser tido por verdadeiro.

Made available in DSpace on 2017-07-10T18:26:07Z (GMT). No. of bitstreams: 1 Jose Provetti Junior.pdf: 967352 bytes, checksum: a11663adac9c9ac85b4c09cdc68fc5cc (MD5) Previous issue date: 2014-05-30 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This dissertation proposes to present the results of a survey around the philosophical foundations of popperian view of knowledge, because assumed through the work of Popper: The world of Parmenides: essays on the presocratic illustration (TWP), the idea of returning to the Greeks as regards the originated attitude of these as philosophy. Initiators of discursive rational mode opened in Archaic Hellas, and that proved the source of the rich array of later scientific and rational development. Popper raises the question of criticism of the inductive method of science positivism, locating it historically in what he called baconian myth , as a certain Aristotle's bias to create the inductive method based on the socratic elencho. It is supposed to understand the relevance of Popper's invitation to return as the Greeks and their originates motivation on the cosmology and the theory of knowledge by being able to better understand popperian logic of scientific inquiry; investigating the historical and philosophical foundations of his argument as it is believed, is set directly on the shaft of the presocratic thought. What make possible to understand the whole popperian work as the philosopher's attempt to build a truly foundational cosmological system, aligned with the archaic Hellenic philosophizing, aiming the challenges of contemporary philosophy and science with respect to Epistemology. / Essa dissertação propõe-se a apresentar os resultados de uma pesquisa em torno das bases filosóficas da visão popperiana do conhecimento, pois se supõe, através da obra de Popper, O Mundo de Parmênides: ensaios sobre a ilustração pré-socrática (TWP), a ideia de retorno aos gregos no que respeita à atitude originária destes quanto à filosofia. Iniciadores do modo discursivo racional, inaugurado na Hélade Arcaica e que se mostraram a fonte da rica matriz do desenvolvimento racional e científico posterior. Popper levanta a questão da crítica ao método indutivo da ciência positivista, localizando-o historicamente, tanto no que denominou mito baconiano quanto em certa tendenciosidade de Aristóteles ao criar o método indutivo, com base no procedimento socrático do elencho. Supõe-se compreender a relevância do convite de Popper quanto ao regresso aos gregos e sua motivação originária quanto à cosmologia e à teoria do conhecimento, através da possibilidade de melhor compreender a lógica da pesquisa científica popperiana, investigando as bases histórico-filosóficas de sua argumentação que, conforme se acredita, está diretamente estabelecida no veio do pensamento pré-socrático. O que possibilita compreender o conjunto da obra popperiana como sendo uma tentativa do filósofo em construir um sistema cosmológico autenticamente fundante, alinhado com o filosofar helênico arcaico, com vista aos desafios da filosofia e da ciência contemporâneos, no que se refere à Epistemologia.

This dissertation is original in using the contrasting ideas of two leading 20th century philosophers of science, Karl Popper and Thomas Kuhn, to provide a philosophical understanding, firstly, of the shift from traditional software methodologies to the so-called Agile methodologies, and, secondly, of the values, principles and practices underlying the most prominent of the Agile methodologies, Extreme Programming (XP). This dissertation will take a revisionist approach, following Fuller—the founder of social epistemology—in reading Popper against Kuhn's epistemological hegemony. The investigations in this dissertation relate to two main branches of philosophy— epistemology and ethics. The epistemological part of this dissertation compares both Kuhn and Popper's alternative ideas of the development of scientific knowledge to the Agile methodologists' ideas of the development of software, in order to assess the extent to which Agile software development resembles a scientific discipline. The investigations relating to ethics in this dissertation transfer concepts from social engineering—in particular, Popper's distinction between piecemeal and utopian social engineering—to software engineering, in order to assess both the democratic and authoritarian aspects of Agile software development and management. The use of Kuhn's ideas of scientific revolutions and paradigm shift by several leading figures of the Agile software methodologies—most notably, Kent Beck, the leader of the most prominent Agile software methodology, Extreme Programming (XP)—to predict a fundamental shift from traditional to Agile software methodologies, is critically assessed in this dissertation. A systematic investigation into whether Kuhn's theory as a whole, can provide an adequate account of the day-to-day practice of Agile software development is also provided. As an alternative to the use of Kuhn's ideas, the critical rationalist philosophy of Karl Popper is investigated. On the one hand, this dissertation assesses whether the epistemological aspects of Popper's philosophy—especially his notions of falsificationism, evolutionary epistemology, and three worlds metaphysics—provide a suitable framework for understanding the philosophical basis of everyday Agile software development. On the other hand, the aspects of Popper's philosophy relating to ethics, which provide an ideal for scientific practice in an open society, are investigated in order to determine whether they coincide with the avowedly democratic values of Agile software methodologies. The investigations in this dissertation led to the following conclusions. Firstly, Kuhn's ideas are useful in predicting the effects of the full-scale adoption of Agile methodologies, and they describe the way in which several leaders of the Agile methodologies promote their methodologies; they do not, however, account for the detailed methodological practice of Agile software development. Secondly, several aspects of Popper's philosophy, were found to be aligned with several aspects of Agile software development. In relation to epistemology, Popper's principle of falsificationism provides a criterion for understanding the rational and scientific basis of several Agile principles and practices, his evolutionary epistemology resembles the iterative-incremental design approach of Agile methodologies, and his three worlds metaphysical model provides an understanding of both the nature of software, and the approach advocated by the Agile methodologists' of creating and sharing knowledge. In relation to ethics, Popper's notion of an open society provides an understanding of the rational and ethical basis of the values underlying Agile software development and management, as well as the piecemeal adoption of Agile software methodologies. / Dissertation (MSc)--University of Pretoria, 2009. / Computer Science / unrestricted

This thesis aims to broaden the discussion about the origins of some of the fundamental theoretical sources for Hayek’s ideas regarding freedom and the state. It focuses on the debates between the Austrian School of Economics and the German Historical School of Economics, as well as the works of Popper, Mill, Humboldt and Hegel in order to identify their positive and negative influences on Hayek’s views of freedom and the state. The originality of the thesis relates to the examination of Humboldt’s political philosophy in terms of its influence over the formation of the components of Hayek’s account of freedom, such as spontaneous order, the rule of law, the role of the state, and the nature of human knowledge. These components have assisted in Hayek’s efforts to prove the superiority of open societies over totalitarian regimes. The thesis explains that Hayek’s intellectual collaboration with Popper played a significant role in identifying many enemies of open societies. Both theorists agreed that historicism was a method commonly used and promoted by the enemies of open society; specifically, they accused Hegel of promoting historicism and, as a result, of being an enemy of open societies. However, this thesis disputes these accusations and argues that Popper and Hayek did not possess adequate knowledge of Hegel’s theoretical work to make such claims. In actuality, Hegel was not an enemy of open societies, he recognized the potential devastating outcomes associated with them and sought solutions. The thesis also explores the idea that Mill was also worried about the detrimental features of industrial capitalism and, as a result, attributed a prominent role to “state activity” in securing the conditions of positive freedom. Hayek, meanwhile, viewed such forms of state interference as obstacles to attaining freedom. This thesis examines the topic whether or not Hayek actually sought to formulate a genuine form of freedom or if he merely valued freedom as a tool for the promotion of open societies over centrally planned economies.

Rapporten syftar till att beskriva och problematisera kvalitet i idéburen, social välfärd. Ansatsen är att utmana antagandet att idéburen verksamhet drivs av goda intentioner och därför levererar omsorgstjänster av god kvalitet. Resultatet visar att idéburna organisationer erbjuds en särställning i välfärden tack vare sina särdrag. Genom Idéburna Offentliga Partnerskap (IOP) kan de undgå ordinarie kvalitetskrav, samtidigt som det saknas empiriska belägg för att särdragen leder till kvalitet. Idéburen omsorg är av god kvalitet enligt människors uppfattningar, men inte alltid enligt dess faktiska kvalitetsarbete. Rapporten är en teoretisk dokumentstudie och behandlar tidigare forskning, politiska skrivelser och partnerskapsdokument från IOP i en kommun. Resultatet har analyserats med stöd av Webers idealtyper. Författaren utgår från en kritisk rationalistisk grund och rapporten har två inriktningar. Dels är den en förberedande undersökning om kvalitet i idéburen välfärd, och dels är den en vetenskapsteoretisk reflektion och modellutveckling av Webers idealtyper. Rapporten kan därför läsas utifrån ett intresse för idéburen välfärdsverksamhet men även utifrån ett intresse för vetenskapsteori och metodologi.

Zur Präparation von hochwertigen Heterostrukturen aus Übergangsmetallperowskiten wurde eine Anlage zur metallorganischen Aerosol-Deposition mit Wachstumskontrolle durch in-situ Ellipsometrie aufgebaut. Durch numerische Anpassung der in-situ Ellipsometrie kann man den beim Wachstum stattfindenden Transfer der $ e_{g} $-Elektronen zwischen unterschiedlich dotierten Perowskit-Manganaten erfassen. Im Verlauf des Wachstums von Übergittern aus $ \mathrm{LaMnO_{3}} $ (LMO) und $ \mathrm{SrMnO_{3}} $ (SMO) variiert die Längenskala, über die die $ e_{g} $-Elektronen delokalisieren, in einem Bereich von $ 0.4\, \mathrm{nm} $ bis $ 1.4 \, \mathrm{nm} $. Mit der neu eingeführten Atomlagenepitaxie (ALE) kann man die Chemie von Perowskit-Grenzflächen vollständig definieren. Am Beispiel von gestapelten $ \mathrm{SrO-SrTiO_{3}} $ (STO) Ruddlesden-Popper-Strukturen und LMO/SMO-Übergittern wird dieses Verfahren erprobt. Mit der in-situ Ellipsometrie kann man Defekte in der SrO-STO-Abfolge vorhersagen, die in anschließenden strukturellen Untersuchungen mit Transmissionselektronenmikroskopie (TEM) erkennbar sind. Außerdem lässt sich die Sr/Ti-Stöchiometrie mit einer Genauigkeit von $ 1.5\, \mathrm{\%} $ festlegen. In Bezug auf das Wachstum von LMO und SMO kann man über die in-situ Ellipsometrie Veränderungen der Mn-Valenzen erkennen und so auf ein zweidimensionales Wachstum jeder halben Perowskitlage schließen. Die in dieser Arbeit etablierte Depositionstechnologie erlaubt das systematische Studium der magnetischen Eigenschaften von Heterostrukturen aus verschieden dotierten Lanthan-Strontium-Manganaten ($ \mathrm{La_{1-x}Sr_{x}MnO_{3}} $ (LSMO(x)). Zunächst wird das magnetische Verhalten von Doppellagen aus dem ferromagnetischen LSMO(0.3) und verschiedenen antiferromagnetischen LSMO(x)-Lagen ($ x=0.6-1.0 $) untersucht. Für $ x>0.6 $ beobachtet man ein erhöhtes Koerzitivfeld und eine Verschiebung der Hysterese entlang der Feldachse (exchange bias (EB)). Als Funktion der Sr-Dotierung zeigen die durch das STO-Substrat verspannten LSMO(x)-Filme einen Übergang vom Antiferromagneten des G-Typs ($ x>0.95 $) zum Antiferromagneten des A-Typs ($ x \leq 0.95 $). Dieser Übergang wird von einer Halbierung der EB-Amplitude begleitet. Für LSMO(0.3)/SMO-Strukturen registriert man eine Abnahme der EB-Amplitude, wenn die epitaktischen Verzerrungen mit zunehmender Dicke der SMO-Lagen relaxieren. Bei Änderungen der tetragonalen Verzerrung der Manganat-Filme kommt es zu einer Modifikation der Balance zwischen den magnetischen Kopplungen in der Filmebene und senkrecht dazu. Dadurch verändern sich die Eigenheiten des Spin-Glases an der Grenzfläche und damit das magnetische Verhalten der Heterostruktur. LMO/SMO-Übergitter auf STO (001) zeigen eine zuvor noch nicht beobachtete Phänomenologie. Wenn die LMO/SMO-Bilagendicke $ \Lambda $ 8 Monolagen übersteigt, bemerkt man zwei separate ferromagnetische Signaturen. Die Tieftemperaturphase (LTP) hat eine Curie-Temperatur $ T_{C}^{L}=180\, \mathrm{K}-300 \, \mathrm{K} $, die mit $ \Lambda $ kontinuierlich abfällt, die Hochtemperaturphase (HTP) hat eine Curie-Temperatur $ T_{C}^{H}=345 \, \mathrm{K} \pm 10 \, \mathrm{K} $, die keine systematische Abhängigkeit von $ \Lambda $ besitzt. LTP und HTP sind magnetisch entkoppelt. Das Skalierungsverhalten des magnetischen Momentes der HTP mit der Bilagendicke und der Zahl von Wiederholungen der LMO/SMO-Einheit deutet auf einen Grenzflächencharakter der HTP. Außerdem besitzt die HTP eine große magnetische Anisotropieenergie, die Literaturwerte für dünne Manganatfilme um zwei Größenordnungen übersteigt. Beim Wachstum auf $ \mathrm{(La_{0.3}Sr_{0.7}) (Al_{0.65}Ta_{0.35})O_{3}} $ (LSAT), das eine kleinere Gitterkonstante als STO besitzt, verschwindet die HTP. Zur Erklärung der HTP stellt man ein Modell vor, bei dem die HTP an der chemisch scharfen SMO/LMO-Grenzfläche lokalisiert ist. Das STO-Substrat führt zu epitaktischen Zugspannungen, die die $ e_{g} $-Elektronen in den an den SMO/LMO-Grenzflächen befindlichen $ \mathrm{MnO_{2}} $-Lagen auf die $ d_{x^{2}−y^{2}} $-Orbitale zwingen. Dadurch ist der Austausch zu den in c-Richtung benachbarten $ \mathrm{MnO_{2}} $-Lagen sehr schwach und der magnetische Austausch findet vorwiegend in der Ebene statt. Durch den Ladungstransfer liegt in der $ \mathrm{MnO_{2}} $-Lage an der SMO/LMO-Grenzfläche ein $ \mathrm{Mn^{4+}} $-Anteil von $ x \approx 0.4 $ vor. Durch den Doppelaustausch bildet sich in dieser Ebene dann eine zweidimensionale ferromagnetische Phase, die die HTP darstellt.