How much energy is required to compute a bit of information? As the end of the CMOS scaling era approaches, this question becomes ever more important. A group at the Semiconductor Research Corporation (SRC) has postul...
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The proceedings contain 16 papers. The topics discussed include: biologically inspired models for swarming;classifying and evolving multi-agent behaviors from animal packs in search and tracking problems;developing AE...
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ISBN:
(纸本)0819466859
The proceedings contain 16 papers. The topics discussed include: biologically inspired models for swarming;classifying and evolving multi-agent behaviors from animal packs in search and tracking problems;developing AEA system-of-systems mission plans with a multi-objective genetic algorithm;evolutionary optimization of cooperative heterogeneous teams;the multi-objective constrained assignment problems;modeling and predicting abstract concept or idea introduction and propagation through geopolitical groups;modeling and predicting community responses to events using cultural demographics;modeling and predicting community responses to events using cultural demographics;bio-inspired large cellular neural networks;evolving military-grade image transforms using state-of-the-art variation operators;and object classification with recurrent feedback neural networks.
Over the past several decades, the philosophical community has witnessed the emergence of an important new paradigm for understanding the mind.(1) The paradigm is that of machine computation, and its influence has bee...
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Over the past several decades, the philosophical community has witnessed the emergence of an important new paradigm for understanding the mind.(1) The paradigm is that of machine computation, and its influence has been felt not only in philosophy, but also in all of the empirical disciplines devoted to the study of cognition. Of the several strategies for applying the resources provided by computer and cognitive science to the philosophy of mind, the one that has gained the most attention from philosophers has been the 'computational theory of Mind' (CTM). CTM was first articulated by Hilary Putnam (1960, 1961), but finds perhaps its most consistent and enduring advocate in Jerry Fodor (1975, 1980, 1981, 1987, 1990, 1994). It is this theory, and not any broader interpretations of what it would be for the mind to be a computer, that I wish to address in this paper. What I shall argue here is that the notion of 'symbolic representation' employed by CTM is fundamentally unsuited to providing an explanation of the intentionality of mental states (a major goal of CTM), and that this result undercuts a second major goal of CTM, sometimes refered to as the 'vindication of intentional psychology.' This line of argument is related to the discussions of 'derived intentionality' by Searle (1980, 1983, 1984) and Sayre (1986, 1987). But whereas those discussions seem to be concerned with the causal dependence of familiar sorts of symbolic representation upon meaning-bestowing acts, my claim is rather that there is not one but several notions of 'meaning' to be had, and that the notions that are applicable to symbols are conceptually dependent upon the notion that is applicable to mental states in the fashion that Aristotle refered to as paronymy. That is, an analysis of the notions of 'meaning' applicable to symbols reveals that they contain presuppositions about meaningful mental states, much as Aristotle's analysis of the sense of 'healthy' that is applied to foods reveals tha
An attempt is made to overview an emerging area of research devoted to analysis and design of control systems under constraints caused by limited information capacity of communication channels. The problem's prehi...
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An attempt is made to overview an emerging area of research devoted to analysis and design of control systems under constraints caused by limited information capacity of communication channels. The problem's prehistory dating back to the 1960s-1970s, as well as the new approaches that appeared during the last decade were analyzed. Much attention was paid to various versions of the celebrated data rate theorem. Consideration was given to the problems of control through the communication networks and some results obtained for the nonlinear systems. The basic application areas were listed in brief.
We present a multichannel reaction matrix theory for perturbed discrete and continuous spectra, using Hartree-Fock (HF) or MCHF-based configuration-interaction (CI) wavefunctions, in the Breit-Pauli approximation. The...
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We present a multichannel reaction matrix theory for perturbed discrete and continuous spectra, using Hartree-Fock (HF) or MCHF-based configuration-interaction (CI) wavefunctions, in the Breit-Pauli approximation. The function space is divided into two parts, P and Q, computed separately for different configurations in a state-specific quasirelativistic framework. The Q functions are correlated low-lying, inner-hole and valence-excited states, whilst the P functions are symmetry-adapted products of correlated (N-1) electron cores with Rydberg and scattering HF or MCHF orbitals. Energy dependent, smooth reaction matrices are found, from which the total wavefunctions are constructed. Calculations very close to and on threshold present no problems. Application is made to the (AlD)-D-2 spectrum, for which quantum defects, oscillator strengths and fine structure (FS) are calculated. The latter was calculated and measured by Buurman and coworkers, who disagreed with earlier theoretical results of Weiss and others. Our results do not confirm their conclusion. Furthermore, the treatment of FS and the good agreement with experiment show that, the inclusion of coupling of '3s3p(2)' D-2 and '3s3pnp' D-2 states is crucial. The contribution of other nonrelativistic terms is insignificant. Our results for oscillator strengths below and above threshold, agree with available experimental values and earlier theoretical results, but disagree with the most recent results and conclusions by Taylor and co-workers who treated this spectrum by a large scale, full CI calculation.
We define a class of recursive functions on the reals analogous to the classical recursive functions on the natural numbers, corresponding to a conceptual analog computer that operates in continuous time. This class t...
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We define a class of recursive functions on the reals analogous to the classical recursive functions on the natural numbers, corresponding to a conceptual analog computer that operates in continuous time. This class turns out to be surprisingly large, and includes many functions which are uncomputable in the traditional sense. We stratify this class of functions into a hierarchy, according to the number of uses of the zero-finding operator mu. At the lowest level are continuous functions that are differentially algebraic, and computable by Shannon's general purpose analog computer. At higher levels are increasingly discontinuous and complex functions. We relate this mu-hierarchy to the arithmetical and analytical hierarchies of classical recursion theory.
In this work, a recently proposed nonlocal theory of bending is used in the analysis of eigenfrequencies of single-walled carbon nanotubes (SWCNTs). The nanotube vibration is analyzed in the form of a homogenized cont...
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In this work, a recently proposed nonlocal theory of bending is used in the analysis of eigenfrequencies of single-walled carbon nanotubes (SWCNTs). The nanotube vibration is analyzed in the form of a homogenized continuum. Classical treatment where a nanotube is approximated by standard beam theory, is replaced by the more sophisticated nonlocal method of material interactions where a nonlocal parameter is used. The eigenfrequencies are computed by the combination of analytical as well as numerical methods for four different carbon nanotube (CNT) supports. Various types of supports are considered for the analysis: fixed-simply supported, fixed-free, simply-simply supported and fixed-fixed. Due to the huge amount of computed data, only outcomes of eigenfrequency computations for the nanobeams of armchair type with fixed and simply supported ends, and different nonlocal parameters are represented in the form of graphs at the end of the article. The study shows how the nanotube eigenfrequencies depend on nonlocal parameters as well as on the length and diameter of CNTs. The obtained results are in good agreement with the results published in papers which were gained by different procedures.
theory and Applications of Models of computation (TAMC) is an international conference series with an interdisciplinary character bringing together researchers working in computer science, mathematics (especially logi...
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theory and Applications of Models of computation (TAMC) is an international conference series with an interdisciplinary character bringing together researchers working in computer science, mathematics (especially logic) and the physical sciences. This interdisciplinary approach, with an emphasis on the theory of computation in a broad sense, gives the series its special appeal within China and internationally. At a time when the pressures are increasingly towards narrowly ad hoc research, and scientific fragmentation, meetings that reassert the importance of theory, fundamental concepts and a wider perspective have an important role to play.
"The principle of divergence is simplicity itself: the more the coinhabitants of an area differ from each other in their ecological requirements, the less they will compete with each other; therefore natural sele...
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ISBN:
(纸本)9781450392686
"The principle of divergence is simplicity itself: the more the coinhabitants of an area differ from each other in their ecological requirements, the less they will compete with each other; therefore natural selection will tend to favor any variation toward greater divergence" (Mayr, 1992)
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