4,038 research outputs found

    A new look at localic interpolation theorems

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    This paper presents a new treatment of the localic Katetov-Tong interpolation theorem, based on an analysis of special properties of normal frames, which shows that it does not hold in full generality. Besides giving us the conditions under which the localic Katetov-Tong interpolation theorem holds, this approach leads to a especially transparent and succinct proof of it. It is also shown that this pointfree extension of Katetov-Tong theorem still covers the localic versions of Urysohn's Lemma and Tietze's Extension Theorem.http://www.sciencedirect.com/science/article/B6V1K-4GWBDP0-3/1/c51690ad60d2e54badeac9b463852c5

    Editorial

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    Número en homenaje a Luis Ric

    On extended frames

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    summary:Some aspects of extended frames are studied, namely, the behaviour of ideals, covers, admissible systems of covers and uniformities

    Characterization of sex, age, and breed for a population of canine leishmaniosis diseased dogs.

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    Our study of a large canine population investigated whether the development of symptomatic canine leishmaniosis revealed any predilection for sex, age, or breed. Included in the study were 390 leishmaniosis-affected dogs that had been treated at the Hospital Clínic Veterinari attached to the Universitat Autònoma de Barcelona. Of the diseased dogs, 238 were male (61%) and 152 were females (39%), whereas percentages for males and females in the overall reference population of dogs treated at this unit were 53% and 47%, respectively, (P<0.05). Age distribution was bimodal, with the highest prevalence of the disease occurring at 2-4 years of age and a secondary peak occurring at seven years or over. The over represented breeds were the German shepherd (13.6% versus 6.35%, P<0.001), the Rottweiler (13.1% versus 3.0%, P<0.001), and the Boxer (7.9% versus 4.7%, P=0.002), whereas the underrepresented breeds were the Yorkshire terrier (0.5% versus 6.5%, P<0.001), and the Poodle (0.3% versus 3.0%, P<0.001)

    Representation Independent Analytics Over Structured Data

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    Database analytics algorithms leverage quantifiable structural properties of the data to predict interesting concepts and relationships. The same information, however, can be represented using many different structures and the structural properties observed over particular representations do not necessarily hold for alternative structures. Thus, there is no guarantee that current database analytics algorithms will still provide the correct insights, no matter what structures are chosen to organize the database. Because these algorithms tend to be highly effective over some choices of structure, such as that of the databases used to validate them, but not so effective with others, database analytics has largely remained the province of experts who can find the desired forms for these algorithms. We argue that in order to make database analytics usable, we should use or develop algorithms that are effective over a wide range of choices of structural organizations. We introduce the notion of representation independence, study its fundamental properties for a wide range of data analytics algorithms, and empirically analyze the amount of representation independence of some popular database analytics algorithms. Our results indicate that most algorithms are not generally representation independent and find the characteristics of more representation independent heuristics under certain representational shifts

    Weil uniformities for frames

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    summary:In pointfree topology, the notion of uniformity in the form of a system of covers was introduced by J. Isbell in [11], and later developed by A. Pultr in [14] and [15]. Another equivalent notion of locale uniformity was given by P. Fletcher and W. Hunsaker in [6], which they called “entourage uniformity”. The purpose of this paper is to formulate and investigate an alternative definition of entourage uniformity which is more likely to the Weil pointed entourage uniformity, since it is expressed in terms of products of locales. We show that our definition is equivalent to the previous ones by proving that our category of Weil uniform frames is isomorphic to the one defined in [6]

    Caracterização de Y3Fe5O12 preparado por sinterização e micro-ondas

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    Mestrado em Engenharia FísicaForam preparadas amostras de Y3Fe5O12, sintetizadas por dois métodos: sinterização convencional (forno) e usando um forno de micro-ondas. Foram utilizados, como precursores, a hematite (Fe2O3) e a ítria (Y2O3). Após moagem, as misturas obtidas foram sujeitas pelos dois métodos, a diferentes temperaturas e tempos de sinterização. Foram sintetizados no forno entre os 1350 ºC e os 1450 ºC, e tempos de sinterização de 4 h e 6 h. Em micro-ondas o intervalo de temperaturas utilizado situou-se entre 600 ºC e os 900 ºC, com tempo de sinterização de 15 minutos. Posteriormente realizaram-se as caracterizações estruturais por difração de Raios-X (DRX), as quais revelaram a presença maioritária das fases da granada de YIG. As amostras obtidas por sinterização convencional apresentaram uma maior cristalinidade. A cristalinidade aumentou para temperaturas de sinterização mais elevadas. Procedeu-se também à caracterização magnética e elétrica das amostras obtidas. Obteve-se para as amostras em estudo, a 300 K e 1 MHz, uma constante dielétrica entre 8,3 e 12,5 com perdas dielétricas menores que 1,6 × 10-1. Relativamente à magnetização obteve-se um valor máximo 40,32 emu/g, registado para a amostra sinterizada a 1450º C/ 6 h e o valor mais baixo foi registado para a amostra sinterizada a 900 ºC, com valor 15,42 emu/g, a 300 K.The ferrite Y3Fe5O12 were prepared by two methods: using a conventional oven and a micro-wave oven. The used precursors were hematite (Fe2O3) and yttria (Y2O3). After milling, the obtained mixtures were subjected to different temperatures and time of sintering in a conventional furnace and in a micro-wave oven. In the conventional oven the samples were synthesized between 1350 °C and 1450 °C, and sintering times of 4 and 6 hours. In the microwave oven the temperatures ranged between 600 °C and 900 °C with sintering time of 15 minutes. After the prepared samples are characterized by X-ray diffraction (XRD). The XRD revealed the presence of a majority of the YIG phase granade. The crystallinity of the samples obtained by conventional sintering increases with the increasing of the sintering temperatures. The magnetic and electrical properties of the samples were measured. The samples show at 300 K and 1 MHz, a dielectric constant between 8.3 and 12.5, with the dielectric losses lower than 1.6 × 10-1. The magnetization presents a maximum value of 40.32 emu / g for the sample sintered at 1450 °C / 6 h. A lower value was measured for the sample sintered at 900 °C, with a value 15.42 emu/g, at 300 K

    Los beneficios de integrar a la familia en la unidad de cuidados intensivos

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    Trabajo fin de grado en EnfermeríaIntroducción La familia es un elemento muy importante para el paciente pero aun así, en la actualidad, no está formando parte en el cuidado de los pacientes ingresados en la UCI. Objetivos Determinar las necesidades sentidas por los familiares en las UCIs, analizar si se integra a la familia en el proceso con medidas que fomenten la salud de la unidad familiar, conocer los factores que interfieren en la relación terapéutica entre enfermería y familia y describir si existe relación entre la intervención de la familia y la evolución del paciente. Con el objetivo principal de conocer los beneficios de integrar a la familia en las Unidad de Cuidados Intensivos. Método Revisión bibliográfica realizada en las siguientes bases de datos: Cuiden, Pubmed, Cinhal, Psycoinfo y Biblioteca Virtual en Salud. Palabras clave Familia, Cuidados Intensivos o UCI, Necesidades, Comunicación Terapéutica y Enfermería Resultados Del total de 24 artículos seleccionados se observa que la presencia de la familia en la UCI supone un beneficio tanto para ésta como para el paciente disminuyendo el estrés y la ansiedad que produce la hospitalización y las posteriores secuelas psicológicas, acelerando además la recuperación del paciente. Conclusiones Seguir desarrollando el proyecto HUCI (Humanización de las UCIs), y continuar formando a enfermeros comprometidos con su trabajo, para brindar un cuidado excelente ya que somos, por y para el paciente y no se integra a la familia en los cuidadosIntroduction Family is a crucial element for patients, however, they are not involved as part of the ICU patient’s care. Aims To identify the perceived needs of families in Intensive care units, to analyse if the family integrates in the process with measures that promote the health within the family unit, to know the key facts that interfere in the therapeutic relationship between the nursing staff and the family and to describe if a relationship exists between the involvement of the family and the recovery of the patient. The main objective will be to know the benefits of the family involvement in the Intensive Care Unit. Method The following investigation will be concluded with the use of the following databases: Cuiden, Pubmed, Cinhal, Psycoinfo y Biblioteca Virtual en Salud. Keywords Family, Intensive Care Unit or ICU, Needs, Therapeutic Communication and Nursing Results Out of a total of 24 selected articles, it is clear that the involvement of the family within the intensive care unit is beneficial, as it reduces the patient’s stress and anxiety levels which cause the hospitalization and subsequent psychological effect, and it speeds up the patient’s recovery Conclusions To continue developing the Project HUCI (Humanización de las UCIs), and to continue forming committed nursing staff in their job, to provide an excellent care now that we are there for the patient and the family is not involved in the care
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