We investigated the current-voltage I(V) characteristics of GaAs/AlAs double-barrier heterostructures. A fine periodic structure of the resonant tunnel current has been revealed. We attribute (...) class='Hi'>it to a sequence of the collective excitations, presumably of the coupled plasmon-phonon type, that are induced in the heavily doped collector region by hot electrons which escape from the quantum well. An oscillatory structure appears also in the valley regions of the I(V) curve under a high magnetic field parallel to the current. It is due to the off-resonance tunnelling between the Landau-quantized states of the emitter and quantum well. Particular phonon-assisted processes in the tunnelling have been identified. (shrink)
w a y s h a v e b e e n . W e a l l r e m e m b e r M a (...) class='Hi'> r x ' s p o l e m i c a g a i n s t P r o u d h o n , t h e Manifesto's critique of "historical action [yielding] to personal inventive action, historically created conditions of emancipation to fantastic ones, and the gradual spontaneous class organizations of the proletariat to an organization of society specially contrived by these inventors" (Marx and Engels, 1986, 64), and the numerous other occasions when the fathers of "scientific socialism" went a f t e r t h e " u t o p i a n s . " I n general this Marxian aversion to drawing up blueprints has been healthy, fueled at least in part by a respect for the concrete specificity of the revolutionary situation and for the agents engaged in revolutionary activity: it is not the business of Marxist intellectuals to tell the agents of revolution how they are to construct their postrevolutionary economy. (shrink)
Contemporary liberal democracy employs a conception of legitimacy according to which political decisions and institutions must be at least in principle justifiable to all citizens. This conception (...) of legitimacy is difficult to satisfy when citizens are deeply divided at the level of fundamental moral, religious, and philosophical commitments. Many have followed the later Rawls in holding that where a reasonable pluralism of such commitments persists, political justification must eschew appeal to any controversial moral, religious, or philosophical premises. In this way, the Rawlsian account of public political justification involves a politics of omission, where citizens are expected to bracket off their most fundamental commitments and seek justifications that draw only from uncontroversial premises. This politics of omission is necessary, Rawls argues, for political stability. But there is good social epistemic evidence for the view that the politics of omission encourages insularity among like-minded groups, and that this insularity in turn generates extremism. So omission is likely to lead to instability, not stability. (shrink)
<span class='Hi'>span><span class='Hi'>span><span class='Hi'>span><span class='Hi'>span><span class='Hi'>span><span class='Hi'>span><span class='Hi'>span> readers of Greek ethics tend to (...) class='Hi'> favour those accounts of the virtuous ideal according to which virtue involves the development of our non-rational—appetitive and emotional—<span class='Hi'>span> motivations as well as of our rational motivations.<span class='Hi'>span> So our contemporaries find much of interest and sympathy in Aristotle’s conception of virtue as a condition in which reason does not simply override our appetites and emotions,<span class='Hi'>span> but these non-rational motivations themselves <span class='Hi'>span>‘speak with the same voice as reason’<span class='Hi'>span>.2 By contrast,<span class='Hi'>span> the Stoic.<span class='Hi'>span>. (shrink)
The text on this website is copyright in the same way as any other publication. It is of course legitimate to make small quotations from it. A (...) link to this site should then be put in to acknowledge the origin of quoted text. For any more substantial use of the material on this site you should ask permission from me. You should also ask my permission to use any of the graphic icons or the images which are marked as being my photographs. (shrink)
Spade 1988 sugges t s tha t t he r e are ac tua l l y two theo r i e s t o address t (...) h i s ques t i o n t o , an ear l y one and a l a t e r one . 2 Most o f the presen t pape r i s a deve l o pmen t o f t h i s i dea . I sugges t tha t ear l y work by Sherwood and o the r s was a s tudy o f quan t i f i e r s : the i r semant i c s and t he e f f e c t s o f con t e x t on i n f e r e n ce s t ha t can be made f r om quan t i f i e d te rms . La te r , i n the hands o f Bur l e y and o the r s , i t changed i n t o a s tudy o f someth i n g e l se , a s tudy o f what I ca l l g loba l quan t i f i c a t i o n a l e f f e c t . In sec t i o n 1 , I exp l a i n what these two op t i o n s are. (shrink)
Taylor, R. A tribute.--Epistemology: Cornman, J. W. Chisholm on sensing and perceiving. Ross, J. F. Testimonial evidence. Lehrer, K. Reason and consistency. Keim, R. Epistemic values (...) class='Hi'>and epistemic viewpoints. Hanen, M. Confirmation, explanation, and acceptance. Canfield, J. V. "I know that I am in pain" is senseless. Steel, T. J. Knowledge and the self-presenting.--Metaphysics: Cartwright, R. Scattered objects. Duggan, T. J. Hume on causation. Arnaud, R. B. Brentanist relations. Johnson, M. L., Jr. Events as recurrables.--Ethics: Stevenson, J. T. On doxastic responsibility. Feldman, F. World utilitarianism. Lamb, J. W. Some definitions for the theory of rules. Donnelly, J. Suicide: some epistemological considerations. (shrink)
Chisholm, R. M. Sentences about believing.--Cornman, J. W. Intentionality and intensionality.--Marras, A. Intentionality and cognitive sentences.--Chisholm, R. M. Notes on the logic of believing.--Luce, (...) class='Hi'>D. R., Sleigh, R. C., and Chisholm, R. M. Discussion on "Notes on the logic of believing."--Lycan, W. G. On intentionality and the psychological.--Hempel, C. G. Logical analysis of psychology.--Carnap, R. Logical foundations of the unity of science.--Nagel, T. Physicalism.--Ryle, G. Dispositions.--Sellars, W. Empiricism and the philosophy of mind.--Chisholm, R. M. and Sellars, W. The Chisholm-Sellars correspondence on intentionality.--Aune, B. Thinking.--Bergmann, G. Intentionality.--Sellars, W. Notes on intentionality.--Frege, G. On sense and nominatum.--Russell, B. On denoting.--Carnap, R. The analysis of belief sentences.--Putnam, H. Synonymity, and the analysis of belief sentences.--Quine, W. V. O. Quantifiers and propositional attitudes.--Linsky, L. Substitutivity and descriptions.--Hintikka, J. Semantics for propositional attitudes.--Rosenthal, D. M. and Sellars, W. The Rosenthal-Sellars correspondence on intentionality.--Bibliography (p. 505-523). (shrink)
I T I S S T A R T L I N G T O realize that the concept of economic exploitation, which has been the focus (...) of intense philosophical debate for what seems like decades now, was barely touched on in John Rawls's 1971 masterwork, A Theory o f Justice, the book that ushered in the present era of Anglo - American social and political philosophy. The subject was broached just once by Rawls, and only to be dismissed as being of such secondary importance as to be "out of place here."1 The concept, however, had begun to attract the attention of a generation of students and young faculty who were rediscovering Marx, to the point that it could not much longer be ignored, not even in Harvard Yard. Robert Nozick, in his famous juniorcolleague, neoconservative rebuttal to the liberal Rawls, devoted a full nine pages to attacking "Marxian exploitation," concluding that "Marxian exploitation is the exploitation of people's lack of understanding of economics.". (shrink)
Mohanty, J.N. Understanding Husserl's transcendental phenomenology.--Fink, E. The problem of the phenomenology of Edmund Husserl. Operative concepts in Husserl's phenomenology.--Funke, G. A transcendental-phenomenological (...) investigation concerning universal idealism, intentional analysis, and the genesis of habitus: archē, phansis, hexis, logos.--Pentzopoulou-Valalas, T. Reflections on the foundation of the relation between the a priori and the eidos in the phenomenology of Husserl.--Landgrebe, L. Regions of being and regional ontologies in Husserl's phenomenology. The problem posed by the transcendental science of the a priori of the life world.--Wahl, J. Notes on the first part of Experience and judgment by Husserl.--Landgrebe, L. A letter from Ludwig Landgrebe to Jean Wahl.-- Wahl, J. A note on some empiricist aspects of the thought of Husserl.--Toulemont, R. The specific character of the social according to Husserl. (shrink)
Kraus, O. Biographical sketch of Franz Brentano.--Stumpf, C. Reminiscences of Franz Brentano.--Husserl, E. Reminiscences of Franz Brentano.--Gilson, E. Brentano's interpretation of medieval philosophy.--Gilson, L (...) class='Hi'>. Franz Brentano on science and philosophy.--Titchener, E. B. Brentano and Wundt: empirical and experimental psychology.--Chisholm, R. M. Brentano's descriptive psychology.--De Boer, T. The descriptive method of Franz Brentano.--Spiegelberg, H. Intention and intentionality in the scholastics, Brentano and Husserl.--Marras, A. Scholastic roots of Brentano's conception of intentionality.--Chisholm, R. M. Intentional inexistence.--McAlister, L. L. Chisholm and Brentano on intentionality.--Chisholm, R. M. Brentano's theory of correct and incorrect emotion.--Moore, G. E. Review of Franz Brentano's The origin of the knowledge of right and wrong.--Franks, G. Was G. E. Moore mistaken about Brentano?--Kotarbinski, T. Franz Brentano as reist.--Terrell, D.B. Brentano's argument for reismus.--Bergman, H. Brentano's theory of induction.--Kraus, O. Toward a phenomenognosy of time consciousness. (shrink)
Burns, C. R. Introduction.--Antiquity: Margalith, D. The ideal doctor as depicted in ancient Hebrew writings. Edelstein, L. The Hippocratic oath. Edelstein, L. The professional ethics of (...) class='Hi'>the Greek physician. Michler, M. Medical ethics in Hippocratic bone surgery. Maas, P. L., Oliver, J. H. An ancient poem on the duties of a physician.--The medieval era: Levey, M. Medical deontology in ninth century Islam. Bar-Sela, A., Hoff, H. E. Isaac Israeli's fifty admonitions of the physicians. Rosner, F. The physician's prayer attributed to Moses Maimonides. MacKinney, L. C. Medical ethics and etiquette in the early middle ages, the persistence of Hippocratic ideals. Welborn, M. C. The long tradition, a study in fourteenth-century medical deontology.--The modern period: Larkey, S. V. The Hippocratic oath in Elizabethan England. Pleadwell, F. L. Samuel Sorbiere and his Advice to a young physician. Clark, G. Bernard Mandeville, M.D., and eighteenth-century ethics. Burns, C. R. Thomas Percival, medical ethics or medical jurisprudence? Burns, C. R. Reciprocity in the development of Anglo-American medical ethics, 1765-1865. Williams, T. F. Cabot, Peabody, and the care of the patient. (shrink)
Morality and politics, by B. Blanshard.--Love and justice, by R. O. Johann.--Responsibility and freedom, by K. Baier.--The mental health ethic, by T. S. Szasz.--Respect (...) class='Hi'>for persons, by E. E. Harris.--Ethics and revolution, by H. Marcuse.--Morality and ideology, by H. D. Aiken.--Utility and moral reasoning, by A. I. Melden.--Ethical fallibility, by C. L. Stevenson. (shrink)
This paper explores the difference between Connectionist proposals for cognitive a r c h i t e c t u r e a n d t h (...) e s o r t s o f m o d e l s t hat have traditionally been assum e d i n c o g n i t i v e s c i e n c e . W e c l a i m t h a t t h e m a j o r d i s t i n c t i o n i s t h a t , w h i l e b o t h Connectionist and Classical architectures postulate representational mental states, the latter but not the former are committed to a symbol-level of representation, or to a ‘language of thought’: i.e., to representational states that have combinatorial syntactic and semantic structure. Several arguments for combinatorial structure in mental representations are then reviewed. These include arguments based on the ‘systematicity’ of mental representation: i.e., on the fact that cognitive capacities always exhibit certain symmetries, so that the ability to entertain a given thought implies the ability to entertain thoughts with semantically related contents. We claim that such arguments make a powerful case that mind/brain architecture is not Connectionist at the cognitive level. We then consider the possibility that Connectionism may provide an account of the neural (or ‘abstract neurological’) structures in which Classical cognitive architecture is implemented. We survey a n u m b e r o f t h e s t a n d a r d a r g u m e n t s t h a t h a v e b e e n o f f e r e d i n f a v o r o f Connectionism, and conclude that they are coherent only on this interpretation. (shrink)
Rene Descartes' Meditations on First Philosophy In Focus contains the excellent and popular Elizabeth S. Haldane and G.R.T. Ross translation of Rene Descartes' Meditations on First (...) class='Hi'> Philosophy . It also contains a portion of the Replies to Objections II, in which Descartes discusses how the method employed in the Meditations, which he calls "analysis," differs from the method of "synthesis" employed by the geometer. In his introduction, Stanley Tweyman provides a fresh and detailed discussion of the relationship between Descartes' Rules for the Direction of the Mind and the method of "analysis," and their applications to the Meditations . The six critical papers drawn together in this book present a broad and exegetical commentary on the Meditations and give an indication of the diversity of scholarly opinion which exists on the topic of method in Descartes' philosophy. An extensive bibliography is also included. Contributors: D. M. Clarke, E. Curley, D. Garber, L. Cohen, J. Hintikka, Georges Moyal, and Stanley Tweyman. (shrink)
Pa ul Boghos s i a n’ s ‘ Me mor y Ar gume nt ’ a l l ege dl y s hows , us i ng t (...) he f ami l i a r s l ow-switching scenario, that externalism and authoritative self-knowledge are incompatible. The aim of this paper is to undermine the argument by examining.. (shrink)
In this article, the author studies some central concepts in Avicenna's and sī's modal logics as presented in Avicenna's Al-Ish r t wa'l Tan (...) class='Hi'> īh t ( Pointers and Reminders ) and in sī's commentary. In this work, Avicenna introduces some remarkable distinctions in order to interpret Aristotle's modal syllogistic in the Prior Analytics . The author outlines a new interpretation of absolute sentences as temporally indefinite sentences and argues on the basis of this that Avicenna seems to subscribe to the Principle of Plenitude. He also shows that he has no valid proof of the modal conversion rules and that he uses some rather ad hoc distinctions to show that Aristotle's modal syllogistic is correct. The author also notes some interesting differences between Avicenna's and sī's approaches to modal logic. (shrink)
La mente non è sempre esistita ma è stata inventata: inventata nel senso che, a un certo punto, qualcuno ha introdotto il concetto di mente. Chi lo (...) abbia introdotto per primo è una questione controversa. Per esempio, Putnam a f f er ma c he , a nc he s e «i n que s t os e c ol os i pa r l a c ome s e l a me nt e f os s e qua s i un’ i de a autoevidente», nondimeno la nozione attuale di mente «non è molto antica, o almeno la sua Ce r t o, «l e pa r ol e ‘ me nt e ’ e ‘ a ni ma ’ , o a l me no i l or o a nt e na t i egemonia non è molto antica».1.. (shrink)
We investigate logical consequence in temporal logics in terms of logical consecutions. i.e., inference rules. First, we discuss the question: what does it mean for a (...) class='Hi'>logical consecution to be 'correct' in a propositional logic. We consider both valid and admissible consecutions in linear temporal logics and discuss the distinction between these two notions. The linear temporal logic LDTL, consisting of all formulas valid in the frame 〈L, ≤, ≥〉 of all integer numbers, is the prime object of our investigation. We describe consecutions admissible LDTL in a semantic way—via consecutions valid in special temporal Kripke/Hintikka models. Then we state that any temporal inference rule has a reduced normal form which is given in terms of uniform formulas of temporal degree 1. Using these facts and enhanced semantic techniques we construct an algorithm, which recognizes consecutions admissible in LDTL. Also, we note that using the same technique it follows that the linear temporal logic L (N) of all natural numbers is also decidable w.r.t. inference rules. So, we prove that both logics LDTL and L (N) are decidable w.r.t. admissible consecutions. In particular, as a consequence, they both are decidable (Known fact), and the given deciding algorithms are explicit. (shrink)
Theorem A. Suppose that T is superstable and p is a nontrivial type of U-rank 1. Then R(p, L, ∞) = 1. Theorem B. Suppose that T (...) is totally transcendental and p is a nontrivial type of U-rank 1. Then p has Morley rank 1. (shrink)
Let T be superstable. We say a type p is weakly minimal if R(p, L, ∞) = 1. Let $M \models T$ be uncountable and saturated, H = (...) class='Hi'>p(M). We say $D \subset H$ is locally modular if for all $X, Y \subset D$ with $X = \operatorname{acl}(X) \cap D, Y = \operatorname{acl}(Y) \cap D$ and $X \cap Y \neq \varnothing$ , dim(X ∪ Y) + dim(X ∩ Y) = dim(X) + dim(Y). Theorem 1. Let p ∈ S(A) be weakly minimal and D the realizations of $\operatorname{stp}(a/A)$ for some a realizing p. Then D is locally modular or p has Morley rank 1. Theorem 2. Let H, G be definable over some finite A, weakly minimal, locally modular and nonorthogonal. Then for all $a \in H\backslash\operatorname{acl}(A), b \in G\operatorname{acl}(A)$ there are a' ∈ H, b' ∈ G such that $a' \in \operatorname{acl}(abb' A)\backslash\operatorname{acl}(aA)$ . Similarly when H and G are the realizations of complete types or strong types over A. (shrink)
A chain-closed field is defined as a chainable field (i.e. a real field such that, for all n ∈ N, Σ K2n+1 ≠ Σ K2n) which (...) class='Hi'>does not admit any "faithful" algebraic extension, and can also be seen as a field having a Henselian valuation ν such that the residue field K/ν is real closed and the value group ν K is odd divisible with |ν K/2ν K| = 2. If K admits only one such valuation, we show that f ∈ K(X) is in $\mathbf{\Sigma} K(X)^{2n} \operatorname{iff}$ for any real algebraic extension L of $K, "f(L) \subseteq \mathbf{\Sigma}L^{2n}"$ holds. The conclusion is also true for K = R((t)) (a chainable but not chain-closed field), and in the case n = 1 it holds for several variables and any real field K. (shrink)
