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111.
Carl R. Ingling Eugenio Martinez-Uriegas Scott S. Grigsby 《Color research and application》1990,15(5):285-290
Rushtion and Baker have shown that the ratio of R to G cones varies between observers. We use this variability to ask if observers, say, who are rich in R-cone input to the flicker (VΛ) channel, are also likely to be rich in R-cone input to the long-wavelength half of the y-b channel. For the 8 observers tested, there is no correlation between cone inputs to +y and VΛ. 相似文献
112.
Andrea. Formisano Eugenio G. Omodeo Marta Simeoni 《Electronic Notes in Theoretical Computer Science》2003,44(3):153-174
Relational reasoning is concerned with relations over an unspecified domain of discourse. Two limitations to which it is customarily subject are: only dyadic relations are taken into account; all formulas are equations, having the same expressive power as first-order sentences in three variables. The relational formalism inherits from the Peirce-Schröder tradition, through contributions of Tarski and many others.Algebraic manipulation of relational expressions (equations in particular) is much less natural than developing inferences in first-order logic; it may in fact appear to be overly machine-oriented for direct hand-based exploitation.The situation radically changes when one resorts to a convenient representation of relations based on labeled graphs. The paper provides details of this representation, which abstracts w.r.t. inessential features of expressions.Formal techniques illustrating three uses of the graph representation of relations are discussed: one technique deals with translating first-order specifications into the calculus of relations; another one, with inferring equalities within this calculus with the aid of convenient diagram-rewriting rules; a third one with checking, in the specialized framework of set theory, the definability of particular set operations. Examples of use of these techniques are produced; moreover, a promising approach to mechanization of graphical relational reasoning is outlined. 相似文献
113.
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115.
Near Room‐Temperature Memory Devices Based on Hybrid Spin‐Crossover@SiO2 Nanoparticles Coupled to Single‐Layer Graphene Nanoelectrodes
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116.
Eugenio Cinquemani Mayank Agarwal Debasish Chatterjee John LygerosAuthor vitae 《Automatica》2011,47(9):2082-2087
We investigate constrained optimal control problems for linear stochastic dynamical systems evolving in discrete time. We consider minimization of an expected value cost subject to probabilistic constraints. We study the convexity of a finite-horizon optimization problem in the case where the control policies are affine functions of the disturbance input. We propose an expectation-based method for the convex approximation of probabilistic constraints with polytopic constraint function, and a Linear Matrix Inequality (LMI) method for the convex approximation of probabilistic constraints with ellipsoidal constraint function. Finally, we introduce a class of convex expectation-type constraints that provide tractable approximations of the so-called integrated chance constraints. Performance of these methods and of existing convex approximation methods for probabilistic constraints is compared on a numerical example. 相似文献
117.
Antonio Hernando Eugenio Roanes-Lozano Luis M. Laita 《Journal of Automated Reasoning》2011,46(2):205-221
This paper is concerned with a polynomial model (residue class ring) for a given q-valued propositional logic (where q is a power of a prime integer). This model allows to transfer logic problems into algebraic terms, resulting in an immediate
computational approach to Knowledge Based Systems based on multi-valued logics. By means of this new approach, we have extended
an already existent algebraic model to logics with a prime power number of truth values, while also getting more straightforward
proofs and a more direct enunciation of the central theorem of this model. 相似文献
118.
M. Dolores Molina-González Eugenio Martínez-Cámara María-Teresa Martín-Valdivia José M. Perea-Ortega 《Expert systems with applications》2013,40(18):7250-7257
Until now most of the published methods for polarity classification have been applied to English texts, but other languages are becoming increasingly important. This paper presents a new resource for the Spanish sentiment analysis research community. We have generated a new lexicon by translating into Spanish the Bin Liu English Lexicon. In order to assess the validity of the proposed lexicon a set of experiments on a Spanish review corpus are presented. In addition, the resource presented is compared with another existing Spanish lexicon. The results show that our resource outperforms the currently available Spanish lexicon for sentiment analysis. 相似文献
119.
Isabel Estrella Emilia Alonso Eugenio Revilla 《Zeitschrift für Lebensmitteluntersuchung und -Forschung A》1987,184(1):27-29
Summary The presence of free flavonol aglycones in three types of Sherry wines (Fino, Oloroso, and Amontillado) and the changes in their contents during ageing in eight Solera systems were studied. The samples of Fino wines present a small amount of quercetin and also very small quantities of kaempferol and isorhamnetin, and the contents of these compounds appear to decrease during ageing. On the other hand, these flavonols are absent in Oloroso and Amontillado wines. Such differences may have been due to the different processes that are involved in the ageing of these wines.
Aglykonflavonole im Sherry: Inhalt und Veranderung wahrend der Alterung des Weins
Zusammenfassung Es wurde das Vorhandensein von freien Aglykonflavonolen in drei verschiedenen Sherrysorten (Fino, Amontillado und Oloroso) und deren Veränderungen während des Alterungsprozesses an acht Solera-Vorrichtungen (Solera ist ein für den Sherry verwendetes Alterungssystem) festgestellt. Die Proben des Fino enthalten eine kleine Menge an Quercetin und noch weniger an Kaempferol sowie Isorhamnetin; die Menge dieser Substanzen scheint mit dem Alterungsprozeß abzunehmen. Andererseits sind these Substanzen bei den Sherrysorten Oloroso und Amontillado nicht vorhanden. Diese Unterschiede beruhen moglicherweise auf verschiedenen Alterungsprozessen.相似文献
120.
Eugenio Parente Himanshu PatelVeronica Caldeo Paolo PirainoPaul L.H. McSweeney 《Food chemistry》2012,131(4):1552-1560
Peptide profiling of cheese extracts by RP-HPLC is widely used to study cheese quality and authenticity. Repeatability, reproducibility and the contribution of differences in sample/treatment, extraction, and the effect of the chromatographic run was studied. Chromatograms (108) of pH 4.6-soluble extracts from 180 d Cheddar cheeses were used to evaluate the precision of the method and to quantify the effect of treatment and replicate cheese trial. Repeatability and reproducibility coefficient of variations of peaks/RT classes varied widely and no clear correlation was found between peak size and reproducibility. ANOVA of Principal Component Scores identified significant differences amongst cheeses and a trial effect. Partial Least Square Discriminant Analysis identified variables related to cheese treatment. Statistical process control methods were used to study the variability of replicate injections over the life of a single column showing the discriminatory power of RP-HPLC and giving possibilities to improve both process control and process optimisation. 相似文献