Coupled KdV equations of Hirota-Satsuma type

It is shown that the system of two coupled Korteweg-de Vries equations passes the Painlev\'e test for integrability in nine distinct cases of its coefficients. The integrability of eight cases is verified by direct construction of Lax pairs, whereas for one case it remains unknown

A new photon recoil experiment: towards a determination of the fine structure constant

We report on progress towards a measurement of the fine structure constant to an accuracy of $5\times 10^{-10}$ or better by measuring the ratio of the Planck constant to the mass of the cesium atom. Compared to similar experiments, ours is improved in three significant ways: (i) simultaneous conjugate interferometers, (ii) multi-photon Bragg diffraction between same internal states, and (iii) an about 1000 fold reduction of laser phase noise to -138 dBc/Hz. Combining that with a new method to simultaneously stabilize the phases of four frequencies, we achieve 0.2 mrad effective phase noise at the location of the atoms. In addition, we use active stabilization to suppress systematic effects due to beam misalignment.Comment: 12 pages, 9 figure

Bi-Objective Community Detection (BOCD) in Networks using Genetic Algorithm

A lot of research effort has been put into community detection from all corners of academic interest such as physics, mathematics and computer science. In this paper I have proposed a Bi-Objective Genetic Algorithm for community detection which maximizes modularity and community score. Then the results obtained for both benchmark and real life data sets are compared with other algorithms using the modularity and MNI performance metrics. The results show that the BOCD algorithm is capable of successfully detecting community structure in both real life and synthetic datasets, as well as improving upon the performance of previous techniques.Comment: 11 pages, 3 Figures, 3 Tables. arXiv admin note: substantial text overlap with arXiv:0906.061

Improving emergency plans management with SAGA

[EN] Emergency plans are the tangible result of the preparedness activities of the emergency management lifecycle. In many countries, public service organizations have the legal obligation to develop and maintain emergency plans covering all possible hazards relative to their areas of operation. However, little support is provided to planners in the development and use of plans. Often, advances in software technology have not been exploited, and plans remain as text documents whose accessibility is very limited. In this paper, we advocate for the definition and implementation of plan management processes as the first step to better produce and manage emergency plans. The main contribution of our work is to raise the need for IT-enabled planning environments, either at the national or organization-specific levels, which can lead to more uniform plans that are easier to evaluate and share, with support to stakeholders other than responders, among other advantages. To illustrate our proposal, we introduce SAGA, a framework that supports the full lifecycle of emergency plan management. SAGA provides all the actors involved in plan management with a number of tools to support all the stages of the plan lifecycle. We outline the architecture of the system, and show with a case study how planning processes can benefit from a system like SAGA.We thank J. Marzal and R. Garrido, from the UPV Prevention Service, for their cooperation in the early design of SAGA. The work of J.H. Canós, M.C. Penadés, M. Llavador and A. Gómez is partially funded by the Spanish Ministerio de Educación y Ciencia (MEC) under grant TIPEx (TIN2010-19859-C03-03). The work of M.R.S. Borges is partially supported by grant nos. 560223/2010-2 and 308003/2011-0 from CNPq (Brazil) and grant no. E-26/103.076/2011 from FAPERJ (Brazil). The cooperation between the Brazilian and the Spanish research groups was partially sponsored by the CAPES/MECD Cooperation Program, Project #169/PHB2007-0064-PC.Canos Cerda, JH.; Borges, M.; Penadés Gramage, MC.; Gómez Llana, A.; Llavador Campos, M. (2013). Improving emergency plans management with SAGA. Technological Forecasting and Social Change. 80(9):1868-1876. https://doi.org/10.1016/j.techfore.2013.02.014S1868187680

What do young athletes implicitly understand about psychological skills?

One reason sport psychologists teach psychological skills is to enhance performance in sport; but the value of psychological skills for young athletes is questionable because of the qualitative and quantitative differences between children and adults in their understanding of abstract concepts such as mental skills. To teach these skills effectively to young athletes, sport psychologists need to appreciate what young athletes implicitly understand about such skills because maturational (e.g., cognitive, social) and environmental (e.g., coaches) factors can influence the progressive development of children and youth. In the present qualitative study, we explored young athletes’ (aged 10–15 years) understanding of four basic psychological skills: goal setting, mental imagery, self-talk, and relaxation. Young athletes (n = 118: 75 males and 43 females) completed an open-ended questionnaire to report their understanding of these four basic psychological skills. Compared with the older youth athletes, the younger youth athletes were less able to explain the meaning of each psychological skill. Goal setting and mental imagery were better understood than self-talk and relaxation. Based on these findings, sport psychologists should consider adapting interventions and psychoeducational programs to match young athletes’ age and developmental level

Effects of own and spousal disability on loneliness among older adults

Objectives: This study examines the effects of own and spousal disability on social and emotional loneliness among married adults aged 65 and older. Method: Data from 710 men and 379 women of a Dutch community sample were analyzed with linear regression analyses. Results: For men, only their wives' disability was related to higher levels of social loneliness, whereas for women mainly their own disability was related to higher levels of social loneliness. Own disability and spousal disability were related to higher levels of emotional loneliness among both men and women. Effects of disability remained unaffected after controlling for characteristics of the social network and the marital relationship. Discussion: Findings underscore the importance of considering effects of both spouses' health on measures of individual well-being. Also, the traditional division of social roles makes older married men relatively vulnerable to social loneliness when their wives suffer from disability. © 2008 Sage Publications

AVALIAÇÃO HISTOPATOLÓGICA, HORMONAL E BACTERIOLÓGICA DA PIOMETRA NA CADELA

O presente estudo teve como objetivo analisar os níveis hormonais, as alterações histopatológicas e os agentes etiológicos encontrados na piometra aberta e fechada em cadelas. Foram colhidas 30 amostras de fêmeas ovariohisterectomizadas em clínicas veterinárias da cidade de Curitiba, no Estado do Paraná, no período de outubro de 2002 a maio de 2003. Procedeu-se a exames bacteriológicos, análises histopatológicas dos cornos uterinos e dosagem hormonal da progesterona e do estradiol pela quimioluminescência. A bactéria isolada em maior porcentagem (36%) foi a Escherichia coli, e a alteração histológica de hiperplasia cística endometrial encontrada variou do grau I ao grau III. A proporção entre a progesterona e estradiol teve uma variação significativa nos dois tipos de piometra, porém não foi possível relacionar o agente etiológico, o tipo de lesão e a dosagem hormonal com o tipo de piometra, aberta ou fechada. Histopathological, hormonal, bacterial evaluation in the bitch pyometra Abstract The aim of the present study was to carry out an evaluation of the hormone levels, the histological changes and the etiological agents found in the open and closed pyometra. The uterine horns were collected from 30 bitches subjected to ovariectomy in different veterinary clinics from Curitiba, State of Parana, during the period of October 2002 to May, 2003. Bacteriological cultures, histological analysis and assays of progesterone and estradiol by the chemoluminescent method were performed. Escherichia coli showed to be the most frequent (36%) of the isolated bateria. It has been found the histological analysis that cystic endometrial hyperplasia varied from type I to type III. The progesterone/ estradiol ratio showed a significant variation in regard to the two types of piometra. However, it was not possible to corrrelate the etiological agent, the lesion and the hormonal levels with the open or closed pyometra

'I like this interview; I get cakes and cats!':the effect of prior relationships on interview talk

Research interviews are a form of interaction jointly constructed by the interviewer and interviewee, what Silverman (2001: 104) calls 'interview-as-local-accomplishment'. From this perspective, interviews are an interpretative practice in which what is said is inextricably tied to where it is said, how it is said and, importantly, to whom it is said (Holstein and Gubrium, 2004). The relationship between interviewer and interviewee, then, is fundamental in research interviews. But what happens when the relationship between interviewer and interviewee is not only that of researcher-informant but also involves other roles such as colleague and friend? In this article we will show how prior relationships are invoked and made relevant by both parties during educational research interviews and how these prior relationships therefore contribute to the 'generation' (Baker, 2004: 163) of interview data. © 2010 The Author(s)