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121.
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
122.
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
123.
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
124.
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
125.
Abstract We analyse the solution of the coined quantum walk on a line. First, we derive the full solution, for arbitrary unitary transformations, by using a new approach based on the four ‘walk fields’ which we show determine the dynamics. The particular way of deriving the solution allows a rigorous derivation of a long wavelength approximation. This long wavelength approximation is useful as it provides an approximate analytical expression that captures the basics of the quantum walk and allows us to gain insight into the physics of the process. 相似文献
126.
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129.
Fernando Salazar Rafael Morán Miguel Á. Toledo Eugenio Oñate 《Archives of Computational Methods in Engineering》2017,24(1):1-21
Predictive models are an important element in dam safety analysis. They provide an estimate of the dam response faced with a given load combination, which can be compared with the actual measurements to draw conclusions about dam safety. In addition to numerical finite element models, statistical models based on monitoring data have been used for decades for this purpose. In particular, the hydrostatic-season-time method is fully implemented in engineering practice, although some limitations have been pointed out. In other fields of science, powerful tools such as neural networks and support vector machines have been developed, which make use of observed data for interpreting complex systems. This paper contains a review of statistical and machine-learning data-based predictive models, which have been applied to dam safety analysis. Some aspects to take into account when developing analysis of this kind, such as the selection of the input variables, its division into training and validation sets, and the error analysis, are discussed. Most of the papers reviewed deal with one specific output variable of a given dam typology and the majority also lack enough validation data. As a consequence, although results are promising, there is a need for further validation and assessment of generalisation capability. Future research should also focus on the development of criteria for data pre-processing and model application. 相似文献
130.