Results for 'spin crisis'

991 found
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  1.  42
    Of Sophists and Spin-Doctors: Industry-Sponsored Ghostwriting and the Crisis of Academic Medicine.Leemon McHenry - 2010 - Mens Sana Monographs 8 (1):129.
    Ghostwriting for medical journals has become a major, but largely invisible, factor contributing to the problem of credibility in academic medicine. In this paper I argue that the pharmaceutical marketing objectives and use of medical communication firms in the production of ghostwritten articles constitute a new form of sophistry. After identifying three distinct types of medical ghostwriting, I survey the known cases of ghostwriting in the literature and explain the harm done to academic medicine and to patients. Finally, I outline (...)
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  2.  17
    The Spin Structure of the Nucleon; A COMPASS Perspective.Andrea Bressan - 2010 - Foundations of Physics 40 (7):1030-1041.
    The COMPASS experiment at CERN is carrying on an experimental investigation of the spin structure of the nucleon, covering both longitudinal and transverse spin phenomena. In the first case, the central topic is the direct measurement of the gluon polarisation with the hope to solve the spin crisis first observed by EMC. The result shows that Δg/g is small around x g ≃0.1, and its first moment should not be larger than 0.2—0.3 in absolute value. About (...)
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  3.  25
    Spinning Solitude: Coronavirus and the Philosopher.Sanjit Chakraborty - 2021 - Sophia 60 (3):769-774.
    This fictionalized script traces the contours of the conversation that seeks to fathom the crisis unleashed by the outbreak and global spread of the coronavirus and the ensuing anxieties created in our current social living. The scenario of deepened isolation of the self from the other is considered, and it is proposed that isolation, while an unavoidable requirement, does not mean it is some mental lassitude but rather may be seen as an enthusiastic concern toward recovering physical and mental (...)
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  4.  35
    The Academic Spin-Offs as an Engine of Economic Transition in Eastern Europe. A Path-Dependent Approach.Ivan Tchalakov, Tihomir Mitev & Venelin Petrov - 2010 - Minerva 48 (2):189-217.
    The paper questions some of the premises in studying academic spin-offs in developed countries, claiming that when taken as characteristics of ‘academic spin-offs per se,’ they are of little help in understanding the phenomenon in the Eastern European countries during the transitional and post-transitional periods after 1989. It argues for the necessity of adopting a path-dependent approach, which takes into consideration the institutional and organisational specificities of local economies and research systems and their evolution, which strongly influence the (...)
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  5.  59
    To Read More Papers, or to Read Papers Better? A Crucial Point for the Reproducibility Crisis.Thiago F. A. França & José M. Monserrat - 2019 - Bioessays 41 (1):1800206.
    The overflow of scientific literature stimulates poor reading habits which can aggravate science's reproducibility crisis. Thus, solving the reproducibility crisis demands not only methodological changes, but also changes in our relationship with the scientific literature, especially our reading habits. Importantly, this does not mean reading more, it means reading better.
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  6. Vigier III.Spin Foam Spinors & Fundamental Space-Time Geometry - 2000 - Foundations of Physics 30 (1).
  7. The contemporary.Crisis Of Marxism & Maxa Myers - 1987 - Thought: Fordham University Quarterly 62 (244):96.
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  8.  18
    Relativismo, verdad ycrisis de la epistemología.I. La Crisis de la Epistemología - 2005 - In Tobies Grimaltós & Julián Pacho (eds.), La Naturalización de la Filosofía: Problemas y Límites. Editorial Pre-Textos.
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  9.  5
    Kryzys estetyki?Maria Golszewska, International Conference on Aesthetics "A. Crisis in Aesthetics?" & Uniwersytet Jagiello Nski (eds.) - 1983 - [Kraków]: Państwowe Wydawn. Nauk..
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  10.  6
    From oversight to overkill: inside the broken system that blocks medical breakthroughs--and how we can fix it.Simon Whitney - 2023 - Irvington, NY: Rivertowns Books.
    Medical research saves lives--yet all too often, it is thwarted by a review system supposed to safeguard patients that instead creates needless delays and expense. Institutional Review Boards, which exist at every hospital and medical school that conducts medical research, have ended up imposing such complex, draconian conditions that research is frequently damaged, delayed, and distorted. This is why medical miracles like the COVID-19 vaccines, which were developed at warp speed, are far too rare. Instead, medical research in countless areas (...)
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  11. ‘Spirit’—or the Self-creating Life-form of Persons and its Constitutive Limits.Heikki Ikäheimo - 2021 - In Vojtěch Kolman & Tereza Matějčková (eds.), Perspectives on the Self: Reflexivity in the Humanities. De Gruyter.
    Australia experienced the most devastating bush-fire season in recorded history, and right after that the world economy stalled due to a global virus outbreak the severity of which has no modern precedent. Crises tend up speed paradigm shifts, and the one begun in 2020 certainly will. In this paper I will contribute to a shift that has been gathering momentum for some time now, the need for which the current crisis has made all too obvious. This is a shift (...)
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  12.  14
    The epistemology of genre.Jonathan Sadow - 2008 - In Alexander John Dick & Christina Lupton (eds.), Theory and Practice in the Eighteenth Century: Writing Between Philosophy and Literature. Pickering & Chatto.
    In “The Epistemology of Metaphor,” Paul De Man analyzes the problem of figural language in Locke, Condillac, and Kant, and suggests that the proliferation of figuration in language is a central difficulty for eighteenth-century philosophy. De Man, curiously enough, provides examples from philosophy while (aside from an oblique reference to the gothic novel) largely ignoring the "depository of the problem": Literature. And yet, readers of Sterne will find De Man's subject—the fear of metaphoric proliferation in eighteenth-century philosophy in general, and (...)
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  13.  3
    Уроки кризи української церкви XVI століття.Olga Nedavnya - 1999 - Ukrainian Religious Studies 9:9-14.
    Today, when Ukraine has entered the path of independence, on the way of joining the European community, it is worth scrutinizing self-critically, so that our course is not burdened and not confused with the burden of old mistakes and miscalculations. Ukrainian history appears as a story of a strict struggle of the nation for self-determination and existence in general. Can you imagine such a Ukrainian fate, spinning the early glorious pages of our writings? The New Christian Kievan Rus during the (...)
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  14. Spin as a Determinable.Johanna Wolff - 2015 - Topoi 34 (2):379-386.
    In this paper I aim to answer two questions: Can spin be treated as a determinable? Can a treatment of spin as a determinable be used to understand quantum indeterminacy? In response to the first question I show that the relations among spin number, spin components and spin values cannot be captured by a single determination relation; instead we need to look at spin number and spin value separately. In response to the second (...)
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  15.  34
    Spin and Wind Directions I: Identifying Entanglement in Nature and Cognition.Diederik Aerts, Jonito Aerts Arguëlles, Lester Beltran, Suzette Geriente, Massimiliano Sassoli de Bianchi, Sandro Sozzo & Tomas Veloz - 2018 - Foundations of Science 23 (2):323-335.
    We present a cognitive psychology experiment where participants were asked to select pairs of spatial directions that they considered to be the best example of Two different wind directions. Data are shown to violate the CHSH version of Bell’s inequality with the same magnitude as in typical Bell-test experiments with entangled spins. Wind directions thus appear to be conceptual entities connected through meaning, in human cognition, in a similar way as spins appear to be entangled in experiments conducted in physics (...)
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  16. Connecting Spin and Statistics in Quantum Mechanics.Arthur Jabs - 2014 - arXiv:0810.2399.
    The spin-statistics connection is derived in a simple manner under the postulates that the original and the exchange wave functions are simply added, and that the azimuthal phase angle, which defines the orientation of the spin part of each single-particle spin-component eigenfunction in the plane normal to the spin-quantization axis, is exchanged along with the other parameters. The spin factor (−1)2s belongs to the exchange wave function when this function is constructed so as to get (...)
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  17. The Spin-Echo Experiments and the Second Law of Thermodynamics.T. M. Ridderbos & M. L. G. Redhead - 1998 - Foundations of Physics 28 (8):1237-1270.
    We introduce a simple model for so-called spin-echo experiments. We show that the model is a mincing system. On the basis of this model we study fine-grained entropy and coarse-grained entropy descriptions of these experiments. The coarse-grained description is shown to be unable to provide an explanation of the echo signals, as a result of the way in which it ignores dynamically generated correlations. This conclusion is extended to the general debate on the foundations of statistical mechanics. We emphasize (...)
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  18.  33
    Spin-Statistics Transmutation in Quantum Field Theory.P. A. Marchetti - 2010 - Foundations of Physics 40 (7):746-764.
    Spin-statistics transmutation is the phenomenon occurring when a “dressing” transformation introduced for physical reasons (e.g. gauge invariance) modifies the “bare” spin and statistics of particles or fields. Historically, it first appeared in Quantum Mechanics and in semiclassical approximation to Quantum Field Theory. After a brief historical introduction, we sketch how to describe such phenomenon in Quantum Field Theory beyond the semiclassical approximation, using a path-integral formulation of euclidean correlation functions, exemplifying with anyons, dyons and skyrmions.
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  19.  16
    Spin and Wind Directions I: Identifying Entanglement in Nature and Cognition.Robrecht Vanderbeeken & Frederik Le Roy - 2018 - Foundations of Science 23 (2):323-335.
    We present a cognitive psychology experiment where participants were asked to select pairs of spatial directions that they considered to be the best example of Two different wind directions. Data are shown to violate the CHSH version of Bell’s inequality with the same magnitude as in typical Bell-test experiments with entangled spins. Wind directions thus appear to be conceptual entities connected through meaning, in human cognition, in a similar way as spins appear to be entangled in experiments conducted in physics (...)
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  20.  72
    The Spin-Echo System Reconsidered.D. A. Lavis - 2004 - Foundations of Physics 34 (4):669-688.
    Simple models have played an important role in the discussion of foundational issues in statistical mechanics. Among them the spin-echo system is of particular interest since it can be realized experimentally. This has led to inferences being drawn about approaches to the foundations of statistical mechanics, particularly with respect to the use of coarse-graining. We examine these claims with the help of computer simulations.
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  21.  31
    Spin-Statistics Connection for Relativistic Quantum Mechanics.A. F. Bennett - 2015 - Foundations of Physics 45 (4):370-381.
    The spin-statistics connection has been proved for nonrelativistic quantum mechanics . The proof is extended here to the relativistic regime using the parametrized Dirac equation. A causality condition is not required.
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  22.  54
    Spin and Wind Directions II: A Bell State Quantum Model.Diederik Aerts, Jonito Aerts Arguëlles, Lester Beltran, Suzette Geriente, Massimiliano Sassoli de Bianchi, Sandro Sozzo & Tomas Veloz - 2018 - Foundations of Science 23 (2):337-365.
    In the first half of this two-part article, we analyzed a cognitive psychology experiment where participants were asked to select pairs of directions that they considered to be the best example of Two Different Wind Directions, and showed that the data violate the CHSH version of Bell’s inequality, with same magnitude as in typical Bell-test experiments in physics. In this second part, we complete our analysis by presenting a symmetrized version of the experiment, still violating the CHSH inequality but now (...)
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  23. Higher Spin AdS.Cft Correspondence & Quantum Gravity Aspects Of Ads/cft - 2016 - In Piero Nicolini, Matthias Kaminski, Jonas Mureika & Marcus Bleicher (eds.), 1st Karl Schwarzschild Meeting on Gravitational Physics. Cham: Imprint: Springer.
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  24.  64
    Spin Path Integrals and Generations.Carl Brannen - 2010 - Foundations of Physics 40 (11):1681-1699.
    The spin of a free electron is stable but its position is not. Recent quantum information research by G. Svetlichny, J. Tolar, and G. Chadzitaskos have shown that the Feynman position path integral can be mathematically defined as a product of incompatible states; that is, as a product of mutually unbiased bases (MUBs). Since the more common use of MUBs is in finite dimensional Hilbert spaces, this raises the question “what happens when spin path integrals are computed over (...)
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  25.  39
    Do Spin-Offs Make the Academics' Heads Spin?Arend H. Zomer, Ben W. A. Jongbloed & Jürgen Enders - 2010 - Minerva 48 (3):331-353.
    As public research organisations are increasingly driven by their national and regional governments to engage in knowledge transfer, they have started to support the creation of companies. These research based spin-off companies (RBSOs) often keep contacts with the research institutes they originate from. In this paper we present the results of a study of four research institutes within two universities and two non-university public research organisations (PROs) in the Netherlands. We show that research organisations have distinct motivations to support (...)
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  26. Magnets, spins, and neurons: The dissemination of model templates across disciplines.Tarja Knuuttila & Andrea Loettgers - 2014 - The Monist 97 (3):280-300.
    One of the most conspicuous features of contemporary modeling practices is the dissemination of mathematical and computational methods across disciplinary boundaries. We study this process through two applications of the Ising model: the Sherrington-Kirkpatrick model of spin glasses and the Hopfield model of associative memory. The Hopfield model successfully transferred some basic ideas and mathematical methods originally developed within the study of magnetic systems to the field of neuroscience. As an analytical resource we use Paul Humphreys's discussion of computational (...)
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  27.  23
    Spin Factors as Generalized Hermitian Algebras.David J. Foulis & Sylvia Pulmannová - 2009 - Foundations of Physics 39 (3):237-255.
    We relate so-called spin factors and generalized Hermitian (GH-) algebras, both of which are partially ordered special Jordan algebras. Our main theorem states that positive-definite spin factors of dimension greater than one are mathematically equivalent to generalized Hermitian algebras of rank two.
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  28.  16
    Spin and Wind Directions I: Identifying Entanglement in Nature and Cognition.Tomas Veloz, Sandro Sozzo, Massimiliano Sassoli de Bianchi, Suzette Geriente, Lester Beltran, Jonito Aerts Arguëlles & Diederik Aerts - 2018 - Foundations of Science 23 (2):323-335.
    We present a cognitive psychology experiment where participants were asked to select pairs of spatial directions that they considered to be the best example of Two different wind directions. Data are shown to violate the CHSH version of Bell’s inequality with the same magnitude as in typical Bell-test experiments with entangled spins. Wind directions thus appear to be conceptual entities connected through meaning, in human cognition, in a similar way as spins appear to be entangled in experiments conducted in physics (...)
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  29.  52
    Deriving Spin within a Discrete-Time Theory.Erasmo Recami & Giovanni Salesi - 2007 - Foundations of Physics 37 (2):277-294.
    We prove that the classical theory with a discrete time (chronon) is a particular case of a more general theory in which spinning particles are associated with generalized Lagrangians containing time-derivatives of any order (a theory that has been called “Non-Newtonian Mechanics”). As a consequence, we get, for instance, a classical kinematical derivation of Hamiltonian and spin vector for the mentioned chronon theory (e.g., in Caldirola et al.’s formulation). Namely, we show that the extension of classical mechanics obtained by (...)
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  30.  21
    Identifying spin in health management evaluations.Ariel Linden - 2011 - Journal of Evaluation in Clinical Practice 17 (6):1223-1230.
  31.  55
    Spin-1/2 Maxwell Fields.Rollin S. Armour - 2004 - Foundations of Physics 34 (5):815-842.
    Requiring covariance of Maxwell's equations without a priori imposing charge invariance allows for both spin-1 and spin-1/2 transformations of the complete Maxwell field and current. The spin-1/2 case yields new transformation rules, with new invariants, for all traditional Maxwell field and source quantities. The accompanying spin-1/2 representations of the Lorentz group employ the Minkowski metric, and consequently the primary spin-1/2 Maxwell invariants are also spin-1 invariants; for example, Φ2−A2, E2−B2+2iE⋅B−2. The associated Maxwell Lagrangian density (...)
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  32.  14
    Anti-crisis.Janet L. Roitman - 2013 - Durham: Duke University Press.
    Crisis demands -- Crisis narratives -- Crisis: refrain!
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  33.  40
    Spin-Dependent Bohmian Electronic Trajectories for Helium.J. A. Timko & E. R. Vrscay - 2009 - Foundations of Physics 39 (9):1055-1071.
    We examine “de Broglie-Bohm” causal trajectories for the two electrons in a nonrelativistic helium atom, taking into account the spin-dependent momentum terms that arise from the Pauli current. Given that this many-body problem is not exactly solvable, we examine approximations to various helium eigenstates provided by a low-dimensional basis comprised of tensor products of one-particle hydrogenic eigenstates.First to be considered are the simplest approximations to the ground and first-excited electronic states found in every introductory quantum mechanics textbook. For example, (...)
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  34.  10
    Connecting Spin and Statistics in Quantum Mechanics.Arthur Jabs - 2010 - Foundations of Physics 40 (7):776-792.
    The spin-statistics connection is derived in a simple manner under the postulates that the original and the exchange wave functions are simply added, and that the azimuthal phase angle, which defines the orientation of the spin part of each single-particle spin-component eigenfunction in the plane normal to the spin-quantization axis, is exchanged along with the other parameters. The spin factor 2s belongs to the exchange wave function when this function is constructed so as to get (...)
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  35.  12
    Spin and Contextuality in Extended de Broglie-Bohm-Bell Quantum Mechanics.Jeroen C. Vink - 2022 - Foundations of Physics 52 (5):1-27.
    This paper introduces an extension of the de Broglie-Bohm-Bell formulation of quantum mechanics, which includes intrinsic particle degrees of freedom, such as spin, as elements of reality. To evade constraints from the Kochen-Specker theorem the discrete spin values refer to a specific basis – i.e., a single spin vector orientation for each particle; these spin orientations are, however, not predetermined, but dynamic and guided by the wave function of the system, which is conditional on the realized (...)
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  36.  32
    The spin of the electron according to stochastic electrodynamics.L. de la Peña & A. Jáuregui - 1982 - Foundations of Physics 12 (5):441-465.
    By making use of the method of moments we study some aspects of the statistical behavior of the nonrelativistic harmonic oscillator according to stochastic electrodynamics. We show that the random rotations induced on the particle by the zero-point field account for the magnitude of the spin of the electron, the result differing from the correct one(3/4)h 2 by a factor of2. Assuming that the measurement of a spin projection may be effectively taken into account by considering the action (...)
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  37.  56
    Spin precession revisited.Ph A. Martin & M. Sassoli de Bianchi - 1994 - Foundations of Physics 24 (10):1371-1378.
    The passage of a spin-1/2neutral particle through a region of uniform magnetic field and the corresponding precession mechanism is analyzed from the viewpoint of scattering theory, with particular consideration of the role of the field boundaries.
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  38. Spin control.Alex Byrne - 1996 - In Enrique Villanueva (ed.), Perception. Ridgeview. pp. 261--74.
  39.  51
    Spin and Statistics and First Principles.Sergio Doplicher - 2010 - Foundations of Physics 40 (7):719-732.
    It was shown in the early seventies that, in Local Quantum Theory (that is the most general formulation of Quantum Field Theory, if we leave out only the unknown scenario of Quantum Gravity) the notion of Statistics can be grounded solely on the local observable quantities (without assuming neither the commutation relations nor even the existence of unobservable charged field operators); one finds that only the well known (para)statistics of Bose/Fermi type are allowed by the key principle of local commutativity (...)
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  40.  5
    Spin Glasses: Criticality and Energy Landscapes.Marco Baity Jesi - 2016 - Cham: Imprint: Springer.
    This thesis addresses the surprising features of zero-temperature statics and dynamics of several spin glass models, including correlations between soft spins that arise spontaneously during avalanches, and the discovery of localized states that involve the presence of two-level systems. It also presents the only detailed historiographical research on the spin glass theory. Despite the extreme simplicity of their definition, spin glasses display a wide variety of non-trivial behaviors that are not yet fully understood. In this thesis the (...)
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  41.  17
    Electron spin-reversal noise in the gigahertz and terahertz ranges as a basis for tired-light cosmology.Donald Gilbert Carpenter - 1990 - Apeiron 6:7-11.
  42. Spin: All is not what it seems.Margaret Morrison - 2007 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 38 (3):529-557.
  43.  24
    Spin and Wind Directions II: A Bell State Quantum Model.Tomas Veloz, Sandro Sozzo, Massimiliano Sassoli de Bianchi, Suzette Geriente, Lester Beltran, Jonito Aerts Arguëlles & Diederik Aerts - 2018 - Foundations of Science 23 (2):337-365.
    In the first half of this two-part article, we analyzed a cognitive psychology experiment where participants were asked to select pairs of directions that they considered to be the best example of Two Different Wind Directions, and showed that the data violate the CHSH version of Bell’s inequality, with same magnitude as in typical Bell-test experiments in physics. In this second part, we complete our analysis by presenting a symmetrized version of the experiment, still violating the CHSH inequality but now (...)
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  44.  35
    Spin: All is not what it seems.Margaret Morrison - 2007 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 38 (3):529-557.
  45.  75
    Spinning strands into aspects: Realism, idealism, and finite modes in Spinoza.Noa Shein - 2020 - European Journal of Philosophy 28 (2):323-336.
    There is a long tradition of reading Spinoza as committed, perhaps unwillingly, to the non-reality of finite modes. While acknowledging that Spinoza does seem to rely on the reality of modes in certain places, Michael Della Rocca has called attention to what he labels an “idealist strand.” As a concluding remark in “Steps Toward Eleaticism in Spinoza's Philosophy of Action,” he claims that faced with these two conflicting strands, which are genuinely to be found in the text, it is better (...)
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  46.  30
    Spinning Threads: On Peacocke's Moderate Rationalism.Robert De Gaynesford - 2006 - Philosophical Books 47 (2):111-119.
  47.  58
    Spin-2 Fields and Helicity.H. I. Arcos, C. S. O. Mayor, G. Otalora & J. G. Pereira - 2012 - Foundations of Physics 42 (10):1339-1349.
    By considering the irreducible representations of the Lorentz group, an analysis of the different spin-2 waves is presented. In particular, the question of the helicity is discussed. It is concluded that, although from the point of view of representation theory there are no compelling reasons to choose between spin-2 waves with helicity σ=±1 or σ=±2, consistency arguments of the ensuing field theories favor waves with helicity σ=±1.
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  48.  89
    Bohm, spin, and the bell inequalities.Katherine Bedard - 1998 - Synthese 114 (3):405-444.
    In this paper I discuss how Bohm's interpretation models spin measurements and how the two ways in which spin is a contextual property pertains to the Kochen-Specker theorem. I then present locality principles from which a Bell Inequality can be derived, and I identify which of the locality principles Bohm's interpretation violates at which times. I also present reasons why the spin vector should not be attributed to the Bohmian particles.
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  49. Spinning the Wheel or Tossing a Coin?Robert Huseby - 2011 - Utilitas 23 (2):127-139.
    In the literature on the so-called numbers problem, some authors have recently argued that the individualist lottery (IL) avoids the flaws of the proportional lottery. This article first presents two recent defenses of the IL, and then argues that both are implausible if we focus, as we should, strictly on their non-consequentialist aspects. This conclusion holds even if we take account of the fact that the IL is arguably that solution to the numbers problem which best meets the marginal difference (...)
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  50.  52
    Spinning the Genome: Why Science Hype Matters.Timothy Caulfield - 2018 - Perspectives in Biology and Medicine 61 (4):560-571.
    Genetic research attracts significant attention from the popular press, and often these representations are less than ideal, skewing toward hyperbole and promises of near-future benefits. Indeed, revolutionary language has permeated public discourse since the start of the Human Genome Project in the early 1990s. If the near constant parade of enthusiastic headlines is to be believed, we have been in the midst of a "genetic revolution" for over three decades, yet, the promised revolutionary changes never fully materialize, at least not (...)
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