This paper uses the notion of Galois-connection to examine the relation between valuation-spaces and logics. Every valuation-space gives rise to a logic, and every logic gives rise to a valuation space, where the resulting pair of functions form a Galois-connection, and the composite functions are closure-operators. A valuation-space (resp., logic) is said to be complete precisely if it is Galois-closed. Two theorems are proven. A logic is complete if and only if it is reflexive and transitive. A valuation-space is complete (...) if and only if it is closed under formation of super-valuations. (shrink)

Gastrulation is the process of early development that reorganizes cells into the three fundamental tissue types of ectoderm, mesoderm, and endoderm. It is a coordinated series of morphogenetic and molecular changes that exemplify many developmental phenomena. In this review, we explore one of the classic developmental systems, the sea urchin embryo, where investigators from different backgrounds have converged on a common interest to study the origin, morphogenesis, and developmental regulation of the endoderm. The sea urchin embryo is remarkably plastic in (...) its developmental potential, and the endoderm is especially instructive for its morphological and molecular responsiveness to inductive cell interactions. We start by examining and integrating the several models for the morphogenetic mechanisms of invagination and tissue elongation, the basic processes of endoderm morphogenesis in this embryo. We next critique the proposed mechanisms of inductive gene regulation in the endoderm that exemplifies a concept of modular transcriptional regulation. Finally, we end with an examination of the current molecular models to explain cell fate determination of the endoderm. Recent progress at the molecular level should soon allow us to explain the seminal experimental observations made in this embryo over a hundred years ago. BioEssays 21:459–471, 1999. © 1999 John Wiley & Sons, Inc. (shrink)

In a recent Article Carla Kary attempts to show that there should be a significant moral difference between instances of killing and letting die. I shall maintain in Section I that Kary's argument is somewhat weakened by the failure to note an important ambiguity in the notion of killing a person. I shall also argue in Section II that a similar ambiguity affects the notion of letting someone die, and that the failure to note this latter ambiguity also weakens the (...) position developed by Robert Coburn with regard to defective newborns. CiteULike Connotea Del.icio.us What's this? (shrink)

The interpretation of quantum mechanics is discussed from the viewpoint of quantum logic (QL). QL is understood to concern the possible properties that can be ascribed to a physical system SYS. The micro-state of SYS at any given moment t is identified with the set of all properties actualized by SYS at time t. Minimal adequacy requirements are proposed for all interpretations of micro-states. A strict interpretation is defined to be one according to which the properties ascribable to SYS are (...) individuated by the projection operators on the associated Hilbert space. Two strict interpretations are examined. Kochen's interpretation is also discussed, and it is argued that it is not a strict interpretation. (shrink)

In the present paper I describe a general formal semantic scheme for the interpretation of quantum mechanics (QM), and on the basis of this scheme I examine the modal interpretation of QM — both the Copenhagen and the anti-Copenhagen variants — proposed by van Fraassen [19, 20, 21], This is intended to be a fragment of a larger work [12] which additionally investigates a number of closely related interpretations, including ones proposed by Bub and Demopoulos [1, 2, 3, 4], Fine (...) [5, 6], and Krips [16, 17].Formal semantically speaking (see, e.g., Thomason [18]), a logic L may be characterized as an ordered pair, where SYN is the underlying syntax (language) of L, and SEM is the semantics of L, which consists of a class of semantic assignments on SYN. (shrink)

Management plays an important role in reinforcing ethics in organizations. To support this aim, managers must use incentive and goal programs in ethical ways. This study examines experimentally the potential ethical costs associated with incentive-driven and goal-induced employee behavior from a managerial perspective. In a quasi-experimental setting, 243 MBA students with significant professional work experience evaluated a hypothetical employee’s ethical behavior under incentive pay systems modeled on a business case. In the role of the employee’s manager, participants evaluated the ethicality (...) of the employee’s incentive-driven and goal-induced ethical/unethical behavior and the outcomes of behavior, with consequences that were either favorable or unfavorable to the organization. The results indicated that participants discounted the ethical considerations of incentive-driven and goal-induced behavior when consequences were favorable to the organization. Participants’ morals and outcome orientations were also significantly related to their ethical judgments and intentions to intervene. The implications of these findings for research and practice are discussed. (shrink)

Volume 35 contains papers and commentaries presented to the Boston Area Colloquium in Ancient Philosophy during academic year 2018-19. Works: Commentary on _De Anima_, Nicomachean Ethics. Topics: Humean motivation, memory-oblivion & myth, final causality and ontology of life.

One group of commentators takes book 10 as determinative and thus tortures the text in book 1 to say the same thing. This position is described as intellectualist or exclusivist and produces certain puzzles in reading Aristotle’s ethical theory. These puzzles are not benign since the privileged position given wisdom in book 10 seems at odds with the discussion of virtue in book 1 and its development in the Nicomachean Ethics as a whole. Indeed, Aristotle appears inconsistent or even contradictory, (...) recommending in these two brief chapters of book 10 a life devoted to contemplation that only grudgingly allows for the necessity of the practical life discussed in such detail in the rest of his ethical works. If this is the case, under what conditions are we expected to forgo contemplation to engage in the various activities of the moral virtues? Since no conditions are spelled out in the text, the range of speculation is confused and ways around the apparent inconsistencies complex. (shrink)

This article examines happiness as an activity, modeled on pleasure in NE 10, 1-5. Aristotle is not proposing a choice, but defining the formal nature of happiness. Contemplation, as the activity of wisdom, constitutes happiness in the strict and formal sense. It has all the attributes of happiness, highest, most continuous, most pleasant, most self-sufficient, leisured, and an end in itself. Practical virtues are formally secondary, as including elements outside the activity of the best part and having leisure as their (...) end. Thus, amusements, practical activities and contemplation are integrated in the life of the sage, the contribution of each formally defined. (shrink)

This volume, the twenty-seventh year of published proceedings, contains papers and commentaries presented to the Boston Area Colloquium in Ancient Philosophy during academic year 2010-11. The papers treat thinkers ranging from Philolaus, Plato and Aristotle, to Plotinus.

Pickering & Garrod (P&G) consider the possibility that inner speech might be a product of forward production models. Here I consider the idea of inner speech as a forward model in light of empirical work from the past few decades, concluding that, while forward models could contribute to it, inner speech nonetheless requires activity from the implementers.

This article compares the thinking of Andrzej Walicki and Isaiah Berlin on the nineteenth-century Russian intelligentsia and on Soviet totalitarianism. It suggests that Berlin saw totalitarianism as an externally imposed political system, whereas Walicki understood totalitarianism to depend both on external pressure and inner coercion. The article draws on a variety of published and unpublished sources, including personal interviews with Walicki and Berlin’s archives at the New Bodleian Library in Oxford, England.

The great age of Russian philosophy spans the century between 1830 and 1930 - from the famous Slavophile-Westernizer controversy of the 1830s and 1840s, through the 'Silver Age' of Russian culture at the beginning of the twentieth century, to the formation of a Russian 'philosophical emigration' in the wake of the Russian Revolution. This volume is a major history and interpretation of Russian philosophy in this period. Eighteen chapters discuss Russian philosophy's main figures, schools and controversies, while simultaneously pursuing a (...) common central theme: the development of a distinctive Russian tradition of philosophical humanism focused on the defence of human dignity. As this volume shows, the century-long debate over the meaning and grounds of human dignity, freedom and the just society involved thinkers of all backgrounds and positions, transcending easy classification as 'religious' or 'secular'. The debate still resonates strongly today. (shrink)

The notion of relative compability is introduced, according to which compatibility is construed as relative to individual quantum states. The compatibility domain of two observablesA, B is defined to be the set com(A, B) of states relative to whichA andB are compatible. Three basic categories of relative compatibility are then defined according to the character of com(A, B): absolute compatibility (ordinary compatibility), absolute incompatibility, and partial compatibility. Then com(A, B) is seen to be a subspace of Hilbert space invariant underA (...) andB; being a subspace, it corresponds to a quantum binary observable (projection), denotedc(A, B). IfA andB are themselves binary observables, thenc(A, B) is expressible as a quantum logical compound ofA andB using the lattice operations meet, join, and orthocomplement. This suggests extending the notion of relative compatibility to the theory of orthomodular lattices, as well as to more general lattice-theoretic formulations of quantum mechanics. (shrink)