1,720,999 research outputs found
Determinación de la receptividad de un establecimiento de cría en Macha, provincia de Córdoba, Argentina
Get PDFTrabajo Final (Especialización en Alimentación de Bovinos) – UNC- Facultad de Ciencias Agropecuarias, 2019Fil: Márquez Massa, Fernando Javier. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina.Fil: Boetto, Graciela Catalina. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina.Fil: Boetto, Graciela Catalina. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; Argentina.Fil: Boetto, Graciela Catalina. MBG Ganadería; Argentina.En un establecimiento ganadero ubicado en Macha, norte de la provincia de Córdoba, no puede establecerse la receptividad del mismo, ya que, por un lado, se desconoce la oferta forrajera dada por los pastizales naturales y por las pasturas megatérmicas implantadas en el establecimiento; y por otro, tampoco se conocen los requerimientos de las distintas categorías que componen el rodeo. Por lo expresado, no puede establecerse una carga animal que permita sostener la condición corporal mínima de los vientres necesaria para una correcta producción. El establecimiento presenta áreas muy heterogéneas, con distinta condición edáfica, diferente accesibilidad por la presencia de renoval y distinta productividad, lo que determina una oferta forrajera difícil de cuantificar. El objetivo del trabajo es cuantificar la producción forrajera, cuantificar los requerimientos de los vientres según su demanda fisiológica durante un ciclo ganadero y establecer una estrategia para hacer coincidir los requerimientos nutricionales del rodeo de vientres con la oferta forrajera en cantidad y calidad.Fil: Márquez Massa, Fernando Javier. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina.Fil: Boetto, Graciela Catalina. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias; Argentina.Fil: Boetto, Graciela Catalina. Universidad Católica de Córdoba. Facultad de Ciencias Agropecuarias; Argentina.Fil: Boetto, Graciela Catalina. MBG Ganadería; Argentina
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
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
Application of clustering procedures for the elaboration of epidemiological profiles in sanitary studiesApplication of clustering procedures for the elaboration of epidemiological profiles in sanitary studies.
No full textEn el contexto de los estudios epidemiológicos, donde se indaga por las enfermedades no transmisibles (ENT), es práctica habitual utilizar variables categóricas para reflejar tanto la presencia de determinadas enfermedades como de comorbilidades o factores de riesgo (FR). En particular, dentro del ámbito de las patologías orales (PO),
las ENT también suelen ser consideradas como FR. En este sentido, existe la posibilidad de considerar el estado de salud global de los individuos, atendiendo simultáneamente la presencia de ENT, PO y FR. Entre los años 2015 y 2016 se llevó a cabo un estudio concerniente a las personas que demandaron asistencia en la Facultad de Odontología de la Universidad de la República, Uruguay. Dicho estudio tenía como objetivo investigar el vínculo entre los FR de las ENT más prevalentes y la salud bucal. Se propone la obtención de perfiles epidemiológicos bien diferenciados a partir de la determinación de tipologías de individuos, en base a atributos categóricos, referentes a ENT, las PO más frecuentes y los FR comunes a ambas. Se detectaron dos tipologías definidas, principalmente por las prevalencias de ENT y PO. Una de ellas se caracterizó por la coexistencia de PO, ENT y FR mientras que en la otra se observaron participantes con menores prevalencias de ENT. Adicionalmente se constató que el grupo de mayor carga de enfermedad estuvo compuesto por principalmente por mujeres y personas de edades más avanzadas, lo cual podría explicar la mayor prevalencia de ENT.In the context of epidemiological studies, where non-communicable diseases (NCDs) are investigated, it is common practice the use of categorical variables to reflect the presence of both certain diseases and comorbidities or risk factors (RF). Particularly, within the scope of oral pathologies (PO), NCDs are usually
considered as RF. In this sense, it is possible to consider the global health status of individuals while simultaneously taking into consideration the presence of NCDs, PO and RF. During years 2015 and 2016, a study was carried out concerning people who demanded assistance at the Facultad de Odontología of the Universidad de la República, Uruguay, which aimed to investigate the link between the RF of the most prevalent NCDs, and oral health. It is proposed to obtain well differentiated epidemiological profiles from the determination of typologies of individuals, based on categorical attributes, referring to NCDs, the most frequent OPs and the RF, common
to both.Two typologies were detected mainly defined by the prevalence of NCD and PO. One of them was characterized by the coexistence of PO, NCD and RF, while in the other participants with lower prevalence of NCD were observed. Additionally, it was found that the group with the highest burden of disease was mainly composed of women and people of more advanced ages, which could explain the higher prevalence of NCD
Alternative counting models for dfm components in an oral health survey in Montevideo, Uruguay.
No full textActualmente existen varios indicadores de las diferentes dimensiones que se determinan a nivel individual en salud oral desde una perspectiva epidemiológica. Dentro de los que corresponden a la patología Caries se consideran entonces los indicadores CPO, ceo, ICDAS entre otros. El CPO es un índice unidimensional que cuenta el número de dientes cariados C, perdidos P y obturados O y cuando debe ser evaluado en un contexto de regresión, es un caso particular de Modelo de Conteo, donde la variable de respuesta refiere al número de veces que un evento ocurre, siendo el evento de conteo la realización de una variable aleatoria no negativa, pudiéndose trabajar con el marco conceptual de la teoría de los Modelos Lineales Generalizados (MLG). En la revisión de la literatura en varios trabajos publicados en revista especializadas de Biomedicina y Epidemiología bien rankeadas no se le presta mucha atención a estos aspectos, donde no queda muchas veces claro porque se opta por alternativas al modelo de Poisson, sino que tampoco se trabaja la capacidad de ajuste (ver capacidad predictiva). Los autores muchas veces solamente se dedican a ver las variables y ajustar modelos, resolviéndose por aquellos donde aparecen variables significativas pero que podrían ser muy pobres prediciendo. Este último aspecto es relevante ya que en base a esos modelos los investigadores terminan elaborando teoría para explicar patologías en función de variables que no son buenas predictoras. Por estos motivos en este trabajo se presentan alternativas a los modelos de conteo básicos y se pone un especial énfasis en la capacidad predictiva de los mismos.Currently, there are several indicators of the different dimensions that are determined at the individual level in oral health from an epidemiological perspective. Among those that correspond to the Caries pathology, the DFM, ceo, ICDAS indicators are considered. DFM is a one-dimensional index that counts the number of teeth decayed D, filled F, missing M and when it should be evaluated in a regression context, is a particular case of a counting model, where the response variable refers to the number of times an event occurs; this counting event is the realization of a non-negative random variable, being able to work with the conceptual framework of the theory of the Generalized Linear Models (GLM). In the review of the literature in several papers published in well-ranked specialized journals of Biomedicine and Epidemiology, little attention is paid to these aspects,where it is not often clear why the authors opt for alternatives to the Poisson model, and they do not work on the adjustment capacity either. Authors often only look at the variables and adjust models, resolving themselves by those where significant variables appear but which could be very poor predicting. This last aspect is relevant since based on these models the researchers then in the discussion end up elaborating theory to explain pathologies based on variables that are not good predictors
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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