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Nomenclatura Unesco > (11) Lógica

Mostrando recursos 281 - 300 de 139,146

281. Translating Haskell to Isabelle - Paolo Torrini; Christoph Lueth; Christian Maeder; Till Mossakowski
Abstract. We present partial translations of Haskell programs to Is-abelle that have been implemented as part of the Heterogenous Tool Set. The the target logic is Isabelle/HOLCF, and the translation is based on a shallow embedding approach. 1

282. Concept Structure Analysis Method based on Integration of FLMP and ISM with Application in Equality Axiom Concepts - Yuan-horng Lin; Sen-chi Yu
Abstract: The purpose of this study is to provide an integrated method which aims to analyze individualized concept structure. This method integrates algorithm of fuzzy logic model of perception (FLMP) and interpretive structural modeling (ISM). The combined algorithm of this integrated model could analyze the individualized concepts structure based on the comparisons with expert. The authors provide the empirical data analysis of equality axiom testing for pupils. The results show that task-takers with different response patterns and total score own varied concept structures. Finally, based on the findings and results, some suggestions and recommendations for future research are provided. Key-Words:...

283. • Stjernfelt, Frederik (2007). Diagrammatology: An Investigation on the Borderlines of - Ahti-veikko Pietarinen
Professor Stjernfelt’s recent book sets a marvellous example of how artificial the analytic/continental divide in contemporary philosophy can be. The deep questions that arise in philosophy are seen to be of mutual concern for all, though the ways of implementing those insights have been differing considerably. The book is a balanced combination of mathematics, logic, phenomenology, biosemiotics, and the art and literature theory, just to mention the major ones from the wide range of disciplines it covers. Rarely in a single treatise does one encounter comparisons of Hilbert and Merleau Ponty, Zelaniec and Friedman, or Greimas and Ingarden, only to...

284. 9. Performing Organization Name and Address 1 10. Work Unit No. (TRAIS) 2. Government Accession No. - David W. Eby; Jonathon M. Vivoda; Linda L. Miller; Helen K. Spradlin; Author(s David W. Eby; Jonathon M. Vivoda; Linda L. Miller; K. Spradlin
This report presents the results of a functional evaluation of the ACTS tool. The tool is based on the concept that a community can assess its own traffic safety problems and resources and discover recommended programs using a single software tool combined with an active community coalition. In our evaluation of the ACTS components, we found that the software interface was acceptable, and we provided several suggestions for its improvement. We found the logic underlying ACTS to be reasonable. However, the functional implementation of this logic may mislead some communities regarding their assets and deficits. The survey data may not...

285. Almost everywhere elimination of probability quantifiers - H. Jerome; Keisler; Wafik Boulos Lotfallah
Abstract. We obtain an almost everywhere quantifier elimination for (the non-critical fragment of) the logic with probability quantifiers, introduced by the first author in [10]. This logic has quantifiers like ∃≥3/4y, which says that “for at least 3/4 of all y”. These results improve upon the 0-1 law for a fragment of this logic obtained by Knyazev [11]. Our improvements are: 1. We deal with the quantifier ∃≥ry, where y is a tuple of variables. 2. We remove the closedness restriction, which requires that the variables in y occur in all atomic subformulas of the quantifier scope. 3. Instead of...

286. MODELLING AND SIMULATING A SIMPLE VIRTUAL - Animat An; Artificial Fish; Anna Lombardi
Abstract: We present two different approaches to model the behaviour of a simple virtual animat. In particular, we consider an artificial fish moving in a physical environment with the aim of reaching food while attempting to escape dangers. A general structure of the control system is formulated where the stimuli of hunger and fear acting on the fish are computed at every time instant. The first approach is based on the notion of physical modelling where stimuli are seen as forces ruling the movement of the fish. In contrast, the second approach is based on a logical axiomatization describing the...

287. On the computational complexity of spatio-temporal logics - David Gabelaia; Roman Kontchakov; Agi Kurucz; Frank Wolter; Michael Zakharyaschev
Recently, a hierarchy of spatio-temporal languages based on the propositional temporal logic PTL and the spatial lan-guages RCC-8, BRCC-8 and S4u has been introduced. Al-though a number of results on their computational properties were obtained, the most important questions were left open. In this paper, we solve these problems and provide a clear picture of the balance between expressiveness and ‘computa-tional realisability ’ within the hierarchy.

288. $rec.titulo - P. Camino; B. Quertier; A. Baudry; G. Comoretto; D. Dallet
Abstrac t- The main goal of this study is to reduce the power dissipation of the 2-stage digital filter used in the ALMA Correlator system. This has been achieved by optimizing the number of FPGA logic elements used for the filter implementation. We have investigated the implementation of various structures based on the Cascaded Integrator Comb (CIC) filter in order to replace the present first filter stage, a 32-time demultiplexed input decimation filter. We conclude that a CIC filter cascaded with a quarter-band filter significantly improves the overall power dissipation and thus the FPGA thermal behaviour and reliability. This new...

289. Maître de conférence - Les Logiques; Pragmatique Oriente Marche; Patrick Gabriel; Iut Quimper
Au concept marketing historique faisant la promotion d’un état d’esprit unique dans la réalisation des échanges marchands s’oppose aujourd’hui une multiplication des manières d’appliquer le marketing, provoquant en retour un vieillissement du concept. La logique économique des entreprises évolue, multipliant les formes et la nature des relations de l’entreprise avec son environnement, et diversifiant les rôles impartis au marketing sans toutefois renforcer son orientation client ou consommateur. To the historical marketing concept making promotion of a single state of mind in the realization of commercial exchanges is opposed today a multiplication of the ways marketing is applying, causing in return...

290. On regular temporal logics with past - Christian Dax; Felix Klaedtke; Martin Lange
Abstract. The IEEE standardized Property Specification Language, PSL for short, extends the well-known linear-time temporal logic LTL with so-called semi-extended regular expressions. PSL and the closely related SystemVerilog Assertions, SVA for short, are increasingly used in many phases of the hardware design cycle, from specification to verification. In this paper, we extend the common core of these specification lan-guages with past operators. We name this extension RTL. Although all ω-regular properties are expressible in PSL, SVA, and RTL, past opera-tors often allow one to specify properties more naturally and concisely. In fact, we show that RTL is exponentially more succinct...

291. The Universally-Supreme Scientific Ethical Values of Logic The Objectively Greatest Common Good is the Logically-Fundamental Heart of Science - Conrad Schneiker
1. What’s the biggest source of cultural insanity?...................................................... 2 2. How can we amplify the power of conventional logic?........................................... 2 3. Why learn about the innate scientific ethics of logic?............................................ 2 4. Towards the universal ethical values of logic.......................................................... 3

292. Stabilization of Autonomous Bicycle using Fuzzy Controller with Maximum Allowable Lean Constraint - Himanshu Dutt Sharma; Umashankar N
The authors have developed an intelligent control system for stabilizing autonomously running bicycle by controlling its lean alone. The controller is developed using fuzzy logic approach with a maximum allowable lean of ± 0.05 radians i.e. ± 2.87º wherein the rule set is designed using the inherent-characteristic relationship of lean and steer present in a bicycle. The Lagrangian mechanics based bicycle model along with the controller is simulated in MATLAB and the results confirm that the controller effort successfully stabilizes the bicycle at various velocities.

293. MATERIALS AND METHODS - Harold L. Rosenthal; Helen I. Cundiff; Biuret Reagent
HE BIURET REACTION has become an important analytic procedure for rapid and accurate determinations of protein concentrations in bio-logic fluids. Since the initial reports of Riegler (1), Autenrieth and Mink (2), and Autenrieth (3), who showed that proteins react with alkaline copper solutions to yield a violet-blue color, many modifications have appeared to improve the stability of alkaline copper solutions and to define optimal conditions for the reaction. These studies have resulted in biuret procedures for serum protein that yield results equivalent to those obtained by micro-Kjeldahl analysis (4-9). In applying the biuret procedure (10) to cerebrospinal fluid protein determinations,...

294. Logical rules and the a priori: good and bad questions - Jaroslav Peregrin
Abstract. Many philosophers ponder the question of the a priori status of logical rules like modus ponens. In this paper I argue that the way in which such questions are usually posed is misguided. I argue that to accept modus ponens is nothing else than to have an implication; hence that to ask how do we know that implication obeys modus ponens does not make sense. To ask whether modus ponens is a priori is to ask whether having implication is a priori. I argue that as one is not born with a language (but perhaps only with a predisposition...

295. A bytecode logic for JML and types (Isabelle/HOL sources) - Lennart Beringer; Martin Hofmann
This document contains the Isabelle/HOL sources underlying our paper A bytecode logic for JML and types [2], updated to Isabelle 2008. We present a program logic for a subset of sequential Java bytecode that is suitable for representing both, features found in high-level spec-ification language JML as well as interpretations of high-level type sys-tems. To this end, we introduce a fine-grained collection of assertions, including strong invariants, local annotations and VDM-reminiscent partial-correctness specifications. Thanks to a goal-oriented structure and interpretation of judgements, verification may proceed without recourse to an additional control flow analysis. The suitability for in-terpreting intensional type systems...

296. K.: University course timetabling with soft constraints - Keith Murray
Abstract. An extension of constraint logic programming that allows for weighted partial satisfaction of soft constraints is described and ap-plied to the development of an automated timetabling system for Purdue University. The soft constraint solver implemented in the proposed solu-tion approach allows constraint propagation for hard constraints together with preference propagation for soft constraints. A new repair search al-gorithm is proposed to improve upon initially generated (partial) assign-ments of the problem variables. The model and search methods applied to the solution of the large lecture room component are presented and discussed along with the computational results.

297. Reclaiming Aboriginal knowledge at the cultural interface. The Australian Education Researcher, 36(2), 55-72. Author contact details: Anthony McKnight: Please cite as - Tyson Yunkaporta; Sue Mcginty
Many studies and papers have explored and critiqued the “what ” and the “why ” of working at the cultural interface of mainstream curricula and local Indigenous knowledge, but this project sought to understand the “how”. Participants went beyond explorations of “cultural items ” and worked in the overlap between the New South Wales Department’s Quality Teaching Framework and Indigenous Pedagogies drawn from local lore, language and the sentient landscape. Indigenous knowledge was used not merely as content, but to provide innovative ways of thinking and problem solving in the field of design and technology. The methodology for the study...

298. Automated Data Fusion and Situation Assessment in Space Systems - Mark L. Hanson; Paul G. Gonsalves
Spacecraft are key components of military operations and everyday life. To achieve space situation awareness, human operators must monitor large numbers of parameters. During off-nominal conditions (e.g. severe space weather storm or onboard anomaly), it is difficult to cohesively monitor the data to develop an accurate tactical picture. To aid operators, we have developed a prototype Multi-Agent Satellite System for Information Fusion (MASSIF) for event detection and characterization. This system integrates a fuzzy logic system for semantic data processing and a Bayesian belief network system for multi-source data fusion and situation assessment. This paper describes initial research results.

299. A Leakage-Tolerant High Fan-in Dynamic Circuit Design Style - Hamid Mahmoodi-meim; Kaushk Roy
A leakage-tolerant design technique for high fan-in dynamic logic circuits is presented. An NMOS transistor with gate and drain terminals tied together (diode) is added in series with the evaluation network of standard domino circuits. Due to the stacking effect, the leakage of the evaluation path significantly decreases, thereby improving the robustness of the circuit against deep-submicron subthreshold leakage and input noise. To improve the speed of the circuit, a current mirror is also employed in the evaluation network to increase the evaluation current. The proposed technique (Diode-Footed Domino) exhibits considerable improvement in leakage and noise-immunity as compared to the...

300. FUZZY - M. V. C. Rao; V. Prahlad
sets and systems A tunable fuzzy logic controller for vehicle-active suspension systems


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