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Behavioural and endocrine responses of companion dogs (Canis familiaris) to short separation-reunion wuth the owner in a novel environment
No full textSalivary Vasopressin as A Potential Non–Invasive Biomarker of Anxiety in Dogs Diagnosed with Separation–Related Problems
Full text linkPhysiological biomarkers of canine anxiety have not been extensively investigated to date. To identify new biomarkers in dogs, we compared behaviorally normal dogs (Control group, N = 13) to dogs diagnosed with separation problems (Case group, N = 13) as they were introduced into a novel environment in the presence of two strangers and subjected to a short episode of separation and reunion with the owner. During the separation phase, dogs in the Case group explored significantly less than controls and were significantly more persistent in expressing passive stress-coping strategies aimed at seeking proximity to their owners. When the owners returned, dogs with separation distress spent significantly more time jumping up on the strangers than control dogs did. Salivary oxytocin and vasopressin concentrations did not differ between samples taken before and after the separation. However, vasopressin concentrations immediately after separation were significantly higher in the Case than in the Control group and remained higher, although not significantly so, 10 minutes later. These results indicated that dogs with separation distress became more anxious than typical dogs when separated from their owner in an unfamiliar environment and provided preliminary support for the use of salivary vasopressin as a possible biomarker for anxiety-related responses in dogs
"Mobile cash" : la utilización de cajeros automáticos para la carga y extracción de efectivo en dispositivos móviles
Full text linkFil: Bossetti, Alejandra. Universidad de San Andrés. Escuela de Administración y Negocios; Argentina.El dinero en efectivo sigue siendo en el país el medio más utilizado para realizar pagos y para el intercambio entre particulares1. Para que esto pueda ser llevado a cabo el efectivo es transportado e intercambiado entre las distintas partes que intervienen en esa operación. El objetivo de este trabajo es proponer un medio para facilitar la incorporación de ese efectivo a una forma digital. Para esto es necesario contar con elementos que atiendan las tres etapas del ciclo de gestión del efectivo: ingreso, intercambio y extracción. El propósito es que por medio de la incorporación de ese efectivo se genere una adopción del método propuesto y de esta forma ampliar la incorporación de la utilización de métodos digitales de operación. La propuesta es utilizar componentes tecnológicos que están disponibles en la actualidad en el país, para dar respuesta a este ciclo. Los elementos son, por un lado, el cajero automático que permite el ingreso y extracción del efectivo y por otro, los dispositivos móviles que son el medio para el intercambio. Para realizar estas funciones se utilizan elementos que, adicionados a los cajeros automáticos, permiten el reconocimiento de efectivo en el momento del ingreso y de esta forma realizar la carga del monto en el momento en el dispositivo móvil del usuario. Como segundo evento el usuario puede enviar el monto digital del efectivo que tiene disponible a otro usuario del sistema. Finalmente este usuario destinatario de ese efectivo digital puede, también por medio de su dispositivo móvil, realizar la extracción del efectivo en otro cajero automático. En este trabajo se tomó como base información de experiencias internacionales, características tecnológicas de los componentes utilizados en la propuesta, la cobertura de las instalaciones de cajeros automáticos en el país, características del mercado móvil Argentino, información del efectivo circulante, funcionalidades desarrolladas con estas tecnologías, aspectos regulatorios nacionales y conocimientos individuales sobre este tipo de industria. Con este material se elaboró esta propuesta de servicio, donde una empresa, en este caso se propone los procesadores de las redes de cajeros automáticos nacionales, pueda combinar la utilización de los mismos con los dispositivos móviles que están en poder de los consumidores y generar una red para el intercambio del efectivo digital.Palabras clave: ATM Automatic Teller Machine, Digital Cash, Cajero Automático, Mobile, Mobile-Payments, No-bancarizado
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
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