Determining the superconducting gap structure in Sr2RuO4 from sound attenuation studies below Tc

This work presents a quantitative theoretical study of the sound attenuation in the unconventional multiband superconductor Sr2RuO4 below the superconducting transition temperature Tc. Sound attenuation in this material is shown to have the remarkable property of being able to identify different nodal structures on different bands. The nodal structures on the \gamma band on the one hand, and on the \alpha and \beta bands on the other, are both found to be characterized by the existence of point nodes, but are significantly different in their quantitative aspects.Comment: 7 pages, REVTe

Competing globally with cost accounting: a case study

In recent years, information has played a key role in business competitiveness, allowing not only to inform managers about external contexts, but also to internal problems. Thus, cost accounting has relevant tools, with the ability to provide information about how the resources of a company are used, making it possible to evaluate and improve their performance. The main goal of this research is to develop a different costing system model to a company, in order to provide distinct information on the costs of production processes, to help managers make better operational and strategic decisions. This company business is processing and packaging fruit and vegetables, in particular they are organized by three main sectors: fruit, potatoes and 4th range products. Those cost allocation methodologies could be identified, on one hand, the profitability of each product, helping to define the best medium-term strategy and, on the other hand, some operational faults. Basically, this work aims to prove the importance of costing models to improve the performance and the competitiveness in a real context.info:eu-repo/semantics/publishedVersio

Late-time Cosmic Dynamics from M-theory

We consider the behaviour of the cosmological acceleration for time-dependent hyperbolic and flux compactifications of M-theory, with an exponential potential. For flat and closed cosmologies it is seen that a positive acceleration is always transient for both compactifications. For open cosmologies, both compactifications can give at late times periods of positive acceleration. As a function of proper time this acceleration has a power law decay and can be either positive, negative or oscillatory.Comment: 10 pages, LaTeX, 2 figure

Managing complexity: a problem of chaos in fisheries policy

This work intends to present chaos theory (and dynamical systems such as the theories of complexity), in terms of interpretation of ecological phenomena. The chaos theory applied in the context of ecological systems, especially in the context of fisheries has allowed the recognition of the relevance of this kind of theories to explain fishing phenomena and fisheries policies. It has permitted new advances in the study of marine systems, contributing to the preservation of fish stocks. This paper deals with the way how to manage fisheries taking chaos in account of the problem.info:eu-repo/semantics/publishedVersio

USA: returning from China?

Nowadays, countries are fighting more than ever for international investments, and they have to provide interesting conditions for companies. Many international companies recognized China as very competitive place to install their factories. Often companies are now considering that the reduced costs (principally wages) in China are not anymore so attractive as before. These companies are returning back from China, finding domestically low wage costs making many investments interesting in their countries. An analysis of this new international scenario is made in this paper as much as a perspective for the future and the implications resulting from companies’ investment movements.info:eu-repo/semantics/publishedVersio

Fano-Andreev effect in a T-shaped Double Quantum Dot in the Coulomb blockade regime

We studied the effects of superconducting quantum correlations in a system consisting of two quantum dots, two normal leads, and a superconductor. Using the non-equilibrium Green's functions method, we analyzed the transmission, density of states, and differential conductance of electrons between the normal leads. We found that the superconducting correlations resulted in Fano-Andreev interference, which is characterized by two anti-resonance line shapes in all of these quantities. This behavior was observed in both equilibrium and non-equilibrium regimes and persisted even when Coulomb correlations were taken into account using the Hubbard-I approximation. It is worth noting that the robustness of this behavior against these conditions has not been studied previously in the literature.Comment: 14 pages, 12 figure

A research in sustainable competitive positional advantage of english dailies in Tamilnadu (India)

The aim of this study is to identify and to describe the sustainable competitive positional advantage of various English Dailies in Tamilnadu (India) in general. Cost leaderships (price) and the differentiations based on demographics, psychographics, reading activity, opinion and interest are particularly considered. In order to reach this scope a theory of sustainable competitive positional advantage is proposed, in the context of print media in India

Contribuição para o conhecimento biológico das águas interiores da Graciosa

XI Expedição Científica do Departamento de Biologia - Graciosa 2004.Das três pequenas lagoas permanentes existentes na ilha até meados do século passado, duas desapareceram e a terceira está completamente artificializada. Neste momento as zonas húmidas dulçaquícolas naturais da ilha Graciosa reduzem-se a dois pequenos charcos (Barreiro e Tanque), ambos fortemente eutrofizados. São apresentadas listas das espécies de algas, plantas vasculares, invertebrados bênticos e vertebrados aí encontrados

Palatability of the Asian clam Corbicula fluminea (Müller 1774) in an invaded system

Biotic interactions such as predation may influence the success of invasive alien species (IAS). Although the Asian clam Corbicula fluminea is recognized as one of the most problematic aquatic IAS, few studies have investigated its use as a food resource. In this study, we aimed to investigate (i) the palatability of C. fluminea under natural (Minho River) and laboratory conditions and (ii) if C. fluminea submitted to different conditions (individuals from Lima and Minho Rivers) vary in palatability. Soft tissues from different Corbicula populations, plus soft tissues from a native clam, tuna and Corbicula shell powder were offered to consumers. Field assays were performed seasonally and laboratory assays only in summer; both assays also tested possible differences during distinct periods of the day. Overall, in natural conditions, the treatments containing C. fluminea had a low palatability. In laboratory assays, higher consumption (almost two times) was observed for Cyprinus carpio and Anguilla anguilla. Also, C. fluminea palatability was different between populations, with the treatment Corbicula Lima being more consumed than Corbicula Minho. Despite the low values of consumption in the field, laboratory results suggest that C. fluminea soft tissues can be a food resource to some species.This study was conducted as part of the project FRESCHO: Multiple implications of invasive species on Freshwater Mussel coextinction processes, supported by FCT (contract: PTDC/AGRFOR/1627/2014). MI is supported by a Post-doc grant (SFRH/BPD/90088/2012) from the Portuguese Foundation for Science and Technology—FCT through POPH/FSE funds. RS also acknowledge the support of the strategic programme UID/BIA/04050/2013 (POCI-01-0145-FEDER007569) funded by national funds through the FCT I.P and by the ERDF through the COMPETE2020—Programa Operacional Competitividade e Internacionalização (POCI)