1,721,076 research outputs found
Hipocalcemia puerperal : variaciones de minerales en el periparto y evaluación de tratamientos
Get PDFLa Hipocalcemia puerperal es una enfermedad de la vaca lechera caracterizada por un cuadro clínico nervioso al periparto. En el país se han realizado variados tratamientos para su prevención. Como objetivos se estudiaron variaciones de Ca total e iónico y otros parámetros sanguíneos, fisiológicos y clínicos del pre y periparto en vacas lecheras, determinando el efecto del tratamiento preventivo con sales aniónicas y geles de calcio orales y con administración parenteral de fósforo y de P+Mg. En un tambo se seleccionaron 50 vacas, dividas en 4 grupos tratados y 1 testigo. Se controlaron clínicamente: distocia, hipocalcemia, retención placentaria, producción láctea y porcentaje de preñez. Se analizaron los iones Ca, K, Na y pH sanguíneos entre -90 a +2 días y Ca, P y Mg en el periparto. Los niveles de Ca iónico, Ca total, P, K+ y Na+ demostraron una variación fisiológica significativa en el periparto y un efecto vaca individual. Las variaciones sanguíneas mostraron correlaciones significativas de Ca total con Ca iónico, P y K. No se encontraron diferencias significativas de Ca total e iónico contra todos los tratamientos pero sí disminución fisiológica al día del parto. Entre los días 0 al +2 posparto se observó que sólo Mg varió significativamente y con el tratamiento de P+Mg La producción láctea a 135 días posparto fue superior significativamente con los tratamientos de sales aniónicas y P+Mg, pero no en parto-concepción o variables clínicas. Se concluye que hubo efectos fisiológicos, individuales y de tratamiento sobre los parámetros sanguíneos y productivos
The International Fund for Cultural Diversity: a new tool for cooperation in the audiovisual field
Get PDFThis paper analyses the implementation of the International Fund for Cultural Diversity (IFCD), emerged from the Convention on the Protection and Promotion of the Diversity of Cultural Expressions (UNESCO 2005). The uniqueness of this multilateral fund is that most of its resources are aimed at supporting actions of non-governmental organizations functioning within the fields of cultural policy and cultural industries in developing and underdeveloped countries. Through a thorough study of different decisions and documents, this text analyses the IFCD’s funding, the results of the first calls for initiatives and the support obtained by projects focused on the audiovisual industry. Conceived as an instrument to implement initiatives whose goal is to strengthen the cultural sphere of the poorest countries, the hitherto modest IFCD faces now questions about its future growth and effectiveness in terms of changing the existing imbalance at work within the flows of audiovisual content both regionally and internationally.Fil: Albornoz, Luis Alfonso. Universidad Carlos III de Madrid. Instituto de Salud; España. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Ten years after the entry into force of the Convention on Cultural Diversity: Imbalances in the international market for cultural goods and services, and the digital challenge
No full textA casi una década de la entrada en vigor de la Convención sobre la diversidad de las expresiones culturales (Unesco, 2005) se impone conocer en qué medida este nuevo tratado internacional, que propugna un mayor equilibrio entre países desarrollados y países en desarrollo en materia cultural, ha logrado transformar los flujos internacionales de comercialización de bienes y servicios culturales. Basándose en datos de fuentes públicas (OMC, ISU) y privadas, el presente artículo demuestra el férreo dominio que continúan detentando las industrias culturales de los países desarrollados. Finalmente se considera la magnitud de uno de los grandes desafíos que hoy debe enfrentar la Convención: la concreción de sus postulados en el paisaje que dibujan las tecnologías digitales.Près d'une décennie après l'entrée en vigueur de la Convention sur la diversité des expressions culturelles (Unesco, 2005) s’impose la nécessité de savoir dans quelle mesure ce nouveau traité international, qui appelle à un meilleur équilibre entre les pays développés et les pays en développement en matière culturelle, a réussi à transformer les flux internationaux du commerce des biens et services culturels. Sur la base des données provenant de sources publiques (OMC, ISU) et privées, cet article démontre le fort contrôle que continuent d'exercer les industries culturelles appartenant à des pays développés. Enfin, est envisagée l'ampleur de l'un des plus grands défis actuels de la Convention : la réalisation de ses principes dans le cadre de l’avancée des technologies numériques.Almost a decade after the entry into force of the Convention on the Diversity of Cultural Expressions (Unesco, 2005) is imposed to know to what extent this new international treaty, which calls for a better balance in cultural matters between developed countries and developing countries, it has succeeded in transforming international flows of trade of cultural goods and services. Based on data from public (WTO, UIS) and private sources, this article demonstrates the strong control that cultural industries of developed countries still have nowadays. Finally, the following pages consider the magnitude of one of the great challenges that the Convention must face today: the realization of its principles in the landscape drawn by digital technologies.Fil: Albornoz, Luis Alfonso. Universidad Carlos III de Madrid. Instituto de Salud; España. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ciencias Sociales. Instituto de Investigaciones "Gino Germani"; Argentin
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
- …
