Ramsey's device [2], for eliminating theoretical terms from a theory assumes that the theory has only finitely many axioms. Paul Berent [1], has recently suggested a modification of Ramsey's method that is designed to cover the infinite case. But, his modified method is quite unlike Ramsey's in that it involves an ascent from the original theory to a suitable metatheory. Thus, it is perhaps of some interest to note that there is an extension of Ramsey's method that covers the infinite (...) case and at the same time is much closer in spirit to his original suggestion. (shrink)

In his essay "on likeness of meaning" nelson goodman proposed that two terms have the same meaning if and only if they have the same primary and secondary extensions. In a later essay "on some differences about meaning" he reformulates his proposal: two terms have the same meaning if and only if they have the same extension and certain of their parallel compounds have the same extension. First, I argue that because the first but not the second formulation allows for (...) interlinguistic meaning comparisons, Goodman proposed two theories on synonymy rather than one. Second, I argue that the first theory suffers from the fatal defect of entailing that any two coextensive terms are synonymous. (shrink)

Certain sections ofJosiah Willard Gibbs's thermodynamics papers might be applicable to biological equilibrium and growth, normal or abnormal.Gibbs added terms⌆ Μ i dm i to the differential of the internal energy dε=tdη−pdΝ, where μi=δεδmi is the potential of substancem i , to provide for chemical as well as thermal and mechanical equilibrium. In this article a further generalization is suggested, to include biological equilibrium by adding to de terms of the form GdN, the variableN being the number of cells, where (...) G=δεδN is a “growth potential” that measures exactly the resistance toward spontaneous growth. The functionG, likeΜ i is intensive in nature except for a conversion factor dMdN ,M=⌆m i , affording possible insight into why incipient abnormal growth is often independent of the number of cells. Useful applications might follow from identities between δGδη,δGδv , or δGδmi and δtδN,−δpδN or δμiδN respectively. The following new function is studied, ζ¯=ζ−GN , a natural generalization of theGibbs free energy function ζ, the possibility of measuring it electrically, and comparison of its role with that of ζ for the possible experimental determination ofG. Gibbs's necessary and sufficient conditions for heterogeneous equilibrium ofn components inm phases are generalized and also modified to include broader restraining conditions like ∑mi=1δNj⩾o ,j=1,f,n, the > being characteristic of only living cellular phases. Careful appraisal of the term “biological stability” is followed by new criteria for stability, instability, and limits of stability, in terms of derivatives ofG, with possible medical applications. Three different sections of Gibbs's works tend to indicate that, for a biological phase, lower pressure usually increases its stability. The equation p′′−p′=σ , where σ=surface tension,p′, p′ = pressures,r, r′=radii of curvature, is applied to possible control of tissue growth at interfaces. Methods of altering the equilibrum between three phasesA, B, C by varying the interfacial tensionsσ AB ,σ BC ,σ AC , using relations like AB <σ AC + BC for stability of theA, B interface, suggest different means for shifting biological equilibrium between normal and abnormal cells through the introduction of new third phases at the interface. Various devices are mentioned for possible control of growth through proper channeling of surface or other equivalent forms of energy. (shrink)

This book presents a collection of articles on applied general equilibrium analysis by major contributors to this field. This rapidly expanding method of analysis involves the use of computers to study entire economies and the interrelationships among firms, households and governments in these economies. There are also articles on the particular computational techniques involved in the numerical estimation of these equilibrium models and on several particular applications. Papers deal with the United States, Mexican and Australian economies. Other chapters provide an (...) analysis of long-run energy problems, fiscal federalism and economic planning. (shrink)

Excerpt from A Beginner's History of Philosophy About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, (...) repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works. (shrink)

In some cases people judge it morally acceptable to sacrifice one person’s life in order to save several other lives, while in other similar cases they make the opposite judgment. Researchers have identified two general factors that may explain this phenomenon at the stimulus level: (1) the agent’s intention (i.e. whether the harmful event is intended as a means or merely foreseen as a side-effect) and (2) whether the agent harms the victim in a manner that is relatively “direct” or (...) “personal”. Here we integrate these two classes of findings. Two experiments examine a novel personalness/directness factor that we call personal force, present when the force that directly impacts the victim is generated by the agent’s muscles (e.g., in pushing). Experiments 1a and b demonstrate the influence of personal force on moral judgment, distinguishing it from physical contact and spatial proximity. Experiments 2a and b demonstrate an interaction between personal force and intention, whereby the effect of personal force depends entirely on intention. These studies also introduce a method for controlling for people’s real-world expectations in decisions involving potentially unrealistic hypothetical dilemmas. (shrink)