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    Geometrization Versus Transcendent Matter: A Systematic Historiography of Theories of Matter Following Weyl

    Sieroka, Norman
    The British Journal for the Philosophy of Science. - 2010/61/4/769-802
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    Titre: Geometrization Versus Transcendent Matter: A Systematic Historiography of Theories of Matter Following Weyl
    Auteur: Sieroka, Norman
    Sujet: Articles
    Description: This article investigates an intertwined systematic and historical view on theories of matter. It follows an approach brought forward by Hermann Weyl around 1925, applies it to recent theories of matter in physics (including geometrodynamics and quantum gravity), and embeds it into a more general philosophical framework. First, I shall discuss the physical and philosophical problems of a unified field theory on the basis of Weyl's own abandonment of his 1918 ‘pure field theory' in favour of an ‘agent theory' of matter. The difference between agent and field theories of matter is then used to establish a sort of dialectic meta-view. With reference to Weyl this view can be understood as being a particular Fichtean transcendental idealist approach which attempts to combine the strengths of the Husserlian phenomenology and Cassirer's neo-Kantianism. 1 Introduction 2 Weyl on Pure Field Physics and Agent Theories of Matter 2.1 Weyl's abandonment of pure field physics 2.2 The philosophical tradition of agent theories 3 A Weylian Classification of Recent Theories of Matter 3.1 Direct interparticle action 3.2 Wheeler's geometrodynamics 3.3 Geometrodynamics of gauge fields 3.4 Quantum gravity: quantum general relativity versus string theory 4 Wavering Between Freedom and Constraint
    Publication en relation: The British Journal for the Philosophy of Science. - 2010/61/4/769-802
    Document hôte: The British Journal for the Philosophy of Science
    Identifiant: 10.1093/bjps/axq007 (DOI)

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    Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland

    BUCHER-NURMINEN, K
    Journal of Petrology. - 1982/23/3/325-343
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    Titre: Mechanism of Mineral Reactions Inferred from Textures of Impure Dolomitic Marbles from East Greenland
    Auteur: BUCHER-NURMINEN, K
    Sujet: Articles
    Description: Mineral assemblages and chemical compositions of minerals found in impure dolomitic marbles embedded in gneisses and migmatites of the E. Greenland Caledonian fold belt (Scoresby Sund) suggest that the marbles were metamorphosed near 630 °C at 5 kb pressure. The analysis of complex textural and mineralogical relations among minerals such as dolomite, calcite, forsterite, pargasite, chlorite, spinel, diopside and phlogopite led to the conclusion that the major mineralogical features of the rocks were probably caused by sodium metasomatism at constant temperature and pressure. The effect of the inferred sodium metasomatism may be summarized by three schematic reactions all involving modal changes of excess dolomite, calcite, forsterite, chlorite and spinel: (a) nucleation and growth of pargasite, (b) resorption of phlogopite, and (c) growth of pargasite from phlogopite
    Publication en relation: Journal of Petrology. - 1982/23/3/325-343
    Document hôte: Journal of Petrology
    Identifiant: 10.1093/petrology/23.3.325 (DOI)

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    Recent Developments of Swiss Federalism

    Fleiner, Thomas
    Publius: The Journal of Federalism. - 2002/32/2/97-124
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    Titre: Recent Developments of Swiss Federalism
    Auteur: Fleiner, Thomas
    Sujet: Articles
    Description: Since the year 2000, Switzerland has had a totally revised constitution. The main changes deal with issues of federalism. Globalization has and will have strong centralizing effects, although localization might trigger emotional and nationalistic reactions within the different ethnic communities of Switzerland. The growing mobility of people and the important percentage of foreigners living in Switzerland (20 percent) are additional challenges to the already existing but constitutionally provided diversity. This article explains the new constitution within this framework of the modem world. In particular, it focuses on the specificity of Swiss diversity and the new balance between self-rule and shared rule
    Publication en relation: Publius: The Journal of Federalism. - 2002/32/2/97-124
    Document hôte: Publius: The Journal of Federalism
    Identifiant: 10.1093/oxfordjournals.pubjof.a004949 (DOI)

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    ON THE HOMOTOPY SET [Bπ, BG] WITH π FINITE AND G A COMPACT CONNECTED LIE GROUP

    MISLIN, G
    THOMAS, C
    The Quarterly Journal of Mathematics. - 1989/40/1/65-78
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    Titre: ON THE HOMOTOPY SET [Bπ, BG] WITH π FINITE AND G A COMPACT CONNECTED LIE GROUP
    Auteur: MISLIN, G
    Contributeur: THOMAS, C
    Sujet: Articles
    Publication en relation: The Quarterly Journal of Mathematics. - 1989/40/1/65-78
    Document hôte: The Quarterly Journal of Mathematics
    Identifiant: 10.1093/qmath/40.1.65 (DOI)

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    Lyusternik-Schnirelman Theory for Flows and Periodic Orbits for Hamiltonian Systems on Tn × Rn

    Josellis, Frank W
    Proceedings of the London Mathematical Society. - 1994/s3-68/3/641-672
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    Titre: Lyusternik-Schnirelman Theory for Flows and Periodic Orbits for Hamiltonian Systems on Tn × Rn
    Auteur: Josellis, Frank W
    Sujet: Articles
    Description: We present a Lyusternik-Schnirelman approach for flows which generalizes the classical result concerning the number of critical points for a differentiable function on a compact manifold. This method can also be extended to special gradient-like flows on non-compact manifolds. Our main goal is the application to the existence and multiplicity of critical points for certain strongly indefinite functions of the form f: M × E → R, where M is a compact manifold and E is a Hilbert space. The case M = Tn of the n-dimensional torus arises in the study of periodic solutions of Hamiltonian systems which are global perturbations of completely integrable systems. For a large class of Hamiltonian systems on T*Tn we prove the existence of at least n + 1 forced oscillations in every homotopy class of loops in T*Tn. Moreover, there exist at least n + 1 periodic solutions having an arbitrarily prescribed rational rotation vector
    Publication en relation: Proceedings of the London Mathematical Society. - 1994/s3-68/3/641-672
    Document hôte: Proceedings of the London Mathematical Society
    Identifiant: 10.1112/plms/s3-68.3.641 (DOI)

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    NEIGHBORHOOD PRODUCTION STRUCTURES, WITH AN APPLICATION TO THE THEORY OF INTERNATIONAL TRADE

    JONES, RONALD W
    KIERZKOWSKI, HENRYK
    Oxford Economic Papers. - 1986/38/1/59-76
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    Titre: NEIGHBORHOOD PRODUCTION STRUCTURES, WITH AN APPLICATION TO THE THEORY OF INTERNATIONAL TRADE
    Auteur: JONES, RONALD W
    Contributeur: KIERZKOWSKI, HENRYK
    Sujet: Articles
    Publication en relation: Oxford Economic Papers. - 1986/38/1/59-76
    Document hôte: Oxford Economic Papers
    Identifiant: 10.1093/oxfordjournals.oep.a041732 (DOI)

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    Non‐Inferentialism about Justification-The Case of Aesthetic Judgements

    Dorsch, Fabian
    The Philosophical Quarterly. - 2013/63/253/660-682
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    Titre: Non‐Inferentialism about Justification-The Case of Aesthetic Judgements
    Auteur: Dorsch, Fabian
    Sujet: Articles
    Description: In this article, I present two objections against the view that aesthetic judgements - that is, judgemental ascriptions of aesthetic qualities like elegance or harmony - are justified non‐inferentially. The first is that this view cannot make sense of our practice to support our aesthetic judgements by reference to lower‐level features of the objects concerned. The second objection maintains that non‐inferentialism about the justification of aesthetic judgements cannot explain why our aesthetic interest in artworks and other objects is limited to only some of their lower‐level features that realise their higher‐level aesthetic qualities. Although my concern with the view that aesthetic judgements are subject to non‐inferential justification is very general, my discussion is primarily structured around Sibley's well‐developed and influential version of this view
    Publication en relation: The Philosophical Quarterly. - 2013/63/253/660-682
    Document hôte: The Philosophical Quarterly
    Identifiant: 10.1111/1467-9213.12063 (DOI)

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    Reliability of growth prediction with hand-wrist radiographs

    Verma, Damian
    Peltomäki, Timo, Jäger, Andreas
    The European Journal of Orthodontics. - 2009/31/4/438-442
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    Titre: Reliability of growth prediction with hand-wrist radiographs
    Auteur: Verma, Damian
    Contributeur: Peltomäki, Timo; Jäger, Andreas
    Sujet: Articles
    Description: The aim of this study was to investigate the validity of hand-wrist radiographic analysis in estimating the amount of remaining craniofacial growth. The material compromised cephalograms of 22 males and 27 females with a Class I malocclusion. The median age of the females at the beginning (T1) was 11 years 10 months and of the males 12 years 6 months and at the end (T2) of treatment 14 years 7 months and 15 years 3 months, respectively. Statural height was measured and a lateral cephalogram was obtained for every patient at T1 and T2. A hand-wrist radiograph was taken only at T1. The cephalograms were scanned and analyzed. Relative dimensional growth changes in statural height as well as of the length of the cranial base (N-S), the maxilla (Ptm-A), and the dimensions of the mandible (Co-Gn, Go-Gn, and Co-Gn) from T1 to T2 were determined and statistically compared (Pearson's correlation coefficients) with the growth prediction assessed with the help of hand-wrist radiographs according to Greulich and Pyle. The results showed a highly significant correlation between statural growth increases and growth prediction assessed from the hand-wrist radiographs (females: r = 0.68; males: r = 0.7). Concerning craniofacial structures, the increase in mandibular corpus showed the highest correlation with growth prediction (females: r = 0.21; males: r = 0.52), but this association would not allow a reliable growth prediction. There was no significant correlation between growth increases of the cranial base, the maxilla, the ramus, and the effective length of the mandible and growth prediction assessed with the help of hand-wrist radiographs. As each patient has an individual growth pattern and different craniofacial structures show individual growth potential, it is questionable if quantitative craniofacial growth prediction with the help of hand-wrist radiographs is reliable. However, in an individual case for the assessment of the timing of the growth process, a hand-wrist radiograph can contribute to treatment planning
    Publication en relation: The European Journal of Orthodontics. - 2009/31/4/438-442
    Document hôte: The European Journal of Orthodontics
    Identifiant: 10.1093/ejo/cjp015 (DOI)

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    The Guide and the Asymptote

    EISENBERG, THEODORE
    DREYFUS, TOMMY
    Teaching Mathematics and its Applications: An International Journal of the IMA. - 1993/12/1/40-42
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    Titre: The Guide and the Asymptote
    Auteur: EISENBERG, THEODORE
    Contributeur: DREYFUS, TOMMY
    Sujet: Articles
    Publication en relation: Teaching Mathematics and its Applications: An International Journal of the IMA. - 1993/12/1/40-42
    Document hôte: Teaching Mathematics and its Applications: An International Journal of the IMA
    Identifiant: 10.1093/teamat/12.1.40 (DOI)

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    The Effects of Disequilibrium and Deformation on the Mineralogical Evolution of Quartz Diorite During Metamorphism in the Eclogite Facies

    KOONS, P. O
    RUBIE, D. C, FRUCH-GREEN, G
    Journal of Petrology. - 1987/28/4/679-700
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    Titre: The Effects of Disequilibrium and Deformation on the Mineralogical Evolution of Quartz Diorite During Metamorphism in the Eclogite Facies
    Auteur: KOONS, P. O
    Contributeur: RUBIE, D. C; FRUCH-GREEN, G
    Sujet: Articles
    Description: In the Sesia Zone, Western Alps, a large volume o