3,911 research outputs found
Nuclear track detectors: threshold behaviour
No full textEn el presente trabajo se analiza el comportamiento de un detector polimérico de trazas nucleares (policarbonato Makrofol E), en respuesta a irradiación con distintos iones para un amplio rango de energía.(desde 0.01 MeV/amu hasta 7 MeV/amu). Se estudia la existencia de un umbral de detección en este material, mediante observación de las trazas realizada con microscopio electrónico de transmisión, y la posible relación entre el umbral y las especies químicas producidas por la irradiación (fragmentos moleculares y radicales libres). Se analizan los resultados a la luz de los criterios existentes y de parámetros propios. Se extiende significativamente el rango de observabilidad de las trazas nucleares, indicando una limitación observacional mas que un umbral fisico del daño en la traza. Se establece que no es posible un criterio único para las altas y las bajas energías.We herein analyze the behaviour of a polymeric track detector (polycarbonate Makrofol E) exposed to ion beam irradiations within a wide energy range (0.0] to 7 MeV/amu). The existence of a detection threshold is evaluated by observation of the tracks by electron microscopy. Furthermore, we examined the association between the threshold and the chemical species induced by irradiation (molecular fragments and free radicals). The results were analyzed in keeping with accepted criteria and parameters developed by us. The observation range was significantly increased. These findings would indicate that the detection limits depend on constraints related to observation rather than to a physical threshold for damage resulting in track formation. The present study shows that a single criterion cannot be applied to both high and low energies.Fil:Saint Martín, María Laura Gisela. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina
Innovative technology and mental health care: Survey on the usage of WhatsApp among Argentinian psychiatrists and psychologists
No full textObjetivos: La comunicación entre pacientes y profesionales de la salud mental mediante plataformas de mensa- jería en el intervalo entre encuentros presenciales o virtuales se convirtió en una modalidad de teleconsulta asincrónica (TA) cuya utilidad y efecto en la carga de trabajo de los profesionales de salud mental no se han explorado. Método: Profesionales del campo de la salud mental que trabajan en Argentina fueron invitados a responder a una encuesta que exploraba la intensidad y utilidad de la TA, y la sobrecarga resultante. Resultados: Se recibieron un total de 527 respuestas de profesionales que trabajan en todo el país. El 69 % de los encuestados mensajes con un promedio de 1-10 pacientes/día y el 31 % con más de 10 pacientes/día; el 75 % respondió mensajes por teléfono móvil los fines de semana. Mientras que el 68 % calificó estas interacciones como positivas para el seguimiento clínico, el 47 % las consideró una fuente de sobrecarga laboral. Conclusiones: La adopción generalizada de la TA puede requerir una autorregulación adicional por parte de los profesionales y un seguimiento regular de los niveles de sobrecarga (especialmente, entre los psiquiatras) para que su práctica clínica diaria sea eficiente y sostenible.Objective: Communication between patients and mental health professionals by means of messaging platforms in the interval between synchronous encounters became a kind of asynchronous teleconsultation (AT) whose usefulness and effect on providers’ workload have not been explored. Method: Mental health providers working in Argentina were invited to answer a survey exploring the intensity and usefulness of AT, and the resulting overload. Results: A total of 527 responses from professionals working throughout the country were received. As much as 69% of respondents exchanged messages with a mean of 1-10 patients/day and 31% with more than 10 patients/day; 75% answered messages over mobile phones on weekends. While 68% rated these interactions as positive for clinical follow-up, 47% considered them as a source of work overload. Conclusions: The generalized adoption of AT may require additional self-regulation by clinicians and regular monitoring of overload levels (particularly, among psychiatrists) to make their daily clinical practice efficient and sustainable.Fil: Agrest, Martín. Proyecto Suma; ArgentinaFil: Matusevich, Leon Daniel. Instituto Universidad Escuela de Medicina del Hospital Italiano; ArgentinaFil: Nemirovsky, Martín. Proyecto Suma; ArgentinaFil: Wikinski, Silvia Ines. Universidad de Buenos Aires. Facultad de Medicina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay; Argentin
The Sources of Quality in the Pharmaceutical Industry
No full textThis paper analyzes the sources of quality of a pharmaceutical product. After identifying eight quality dimensions, a framework of hypothetical sources that contribute the most to shape those dimensions is established. The framework, based on Garvin’s pioneering work, is applied to case studies of laboratories operating in Argentina. Framework relevance is considered using correlation analysis. Laboratories are ranked through expert opinion by the quality of its products using the eight dimensions mentioned above; it is observed that there is no perfect parallelism in ranking along all dimensions, possibly revealing different managerial priorities and uses of resources among laboratories, as well as different sources of quality and different business strategies. Correlation analysis also suggests that the study of a pharmaceutical product is a complex task when a modern concept of quality is considered. Once the existence of different quality dimensions is accepted, the following two questions are investigated: (1) Are there specific sources of quality that support some dimensions (and not others) and that are based on identifiable organizational aspects or specific technologies? (2) What are the generic sources of quality (affecting all dimensions) and in what way do they contribute to improve performance or highlight quality dimensions? It is assumed as a starting point that among the sources of quality there are generic sources, affecting all dimensions, and specific sources, which affect only some dimensions. In concrete cases, specific quality sources are identified, although the search for specific quality sources for each dimension is not conclusive. The study of generic quality sources, however, suggests that corporate systems, corporate culture, and management policies contribute to incorporate quality in a product. Thus quality results from the interaction between generic and specific sources. In the final part of the paper, recommendations for academics and industrialists are provided, as well as some conclusions.Pharmaceutical product, Garvin’s quality dimensions, quality sources, pharmaceutical laboratories in Argentina, corporate systems, corporate culture.
Marina Martín Garcia
No full textIsla Martín Garcia is founded on a rock outcrop in the Río de la Plata which is a natural protected area between Argentina and Uruguay. Due to the extension of the runway at the local airport, wetlands between Isla Timoteo Domínguez and Isla Martín Garcia developed during the last decades. The bay, where the old port was located, was loaded with sediment. After the waters between the two islands sedimented, Isla Hércules is formed and a channel is created. For the location of the marina, three possible options are selected: at the pier, south of Isla Hércules and in the sedimented bay north of Isla Martín Garcia. By using a multi criteria analysis, a marina at the pier is chosen as the best option because of its small dredging area and minor environmental impact. In consultation with the consultative authorities, a marina at the bay is chosen as the elaborated alternative. The recovery of the old situation in which the marina is located in the bay is the main reason for this choice.Implementation of the marina at Isla Martín Garcia involves cooperation between two parties: the government and a second investor. The government is responsible for the island, and a certain amount of liquidity is required to boost tourism on the island. A second party, like a private investor, is introduced for the maintenance and exploration of the project. This cooperation needs to invest 22.9 million dollars; this includes the 16.4 million dollars for the government and 6.5 million dollars for the second party. Without involving an external investor the internal rate of return (IRR) is 1.77% which is very low. When involving a private investor the IRR increases, the external investor receives an IRR of 7.71 % over the entire lifetime of the marina.Hydraulic EngineeringCivil Engineering and Geoscience
The next bibliometrics: ALMetrics (Author Level Metrics) and the multiple faces of author impact
No full textThe main goal of this article is to describe the purpose and content of a new branch of bibliometrics: ALMetrics (Author-Level Metrics). ALMetrics is focused on the quantitative analysis of an author's performance by measuring the dimensions of their intellectual activity as shown through varied metric indicators. This article will list, define, and classify the different metrics that are offered in newer information portals that showcase the scientific activity of authors. These metrics are grouped into five sets: bibliometrics (publication and citation), usage, participation, rating, social connectivity, and composite indicators. This new bibliometric specialty is necessary because of new trends in scientific assessment, which have moved analysis away from old bibliometrics (based on journal analysis and Impact Factor) towards new bibliometrics that analyze both documents and authors via a mix of indicators. Most importantly, ALMetrics responds to the researchers' desire for both knowledge and acknowledgement.Orduña Malea, E.; Martín-Martín, A.; Delgado-López-Cózar, E. (2016). The next bibliometrics: ALMetrics (Author Level Metrics) and the multiple faces of author impact. profesional de la información. 25(3):485-496. doi:10.3145/epi.2016.may.18S48549625
Carmen Martín Gaite: la escritura terapéutica = Carmen Martin Gaite: Therapeutic Writing
No full textThis article discusses the therapeutic power of the written and oral communication, as well as the benefit of reading literary texts proposed by the narrative of Carmen Martín Gaite. If the author prioritized spoken communication in her first novels, with the passing of time, defended her narrative writing versus orality, making it the vehicle of choice for characters to communicate and ultimately for herself, to find the healing through the wordEn este artículo se analiza el poder terapéutico de la comunicación oral y escrita, así como el beneficio de la lectura de textos literarios que propone la narrativa de Carmen Martín Gaite. Si la autora priorizó la comunicación hablada en su primeras novelas, con el paso del tiempo, su discurso narrativo defendió la escritura frente a la oralidad, convirtiéndola en el vehículo elegido por sus personajes para comunicarse y, en definitiva por ella misma, para buscar la curación a través de la
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The social class struggles concept with an interdisciplinary approach: a paramount concept for research in library and information science (LIS)
No full textThis paper analyses the social class struggles concept with an interdisciplinary approach to be used by theorists and practitioners of library and information science (LIS). This concept emerged as part of the theoretical framework employed by the author in his doctoral thesis (Muela-Meza, 2010): An Application of Community Profiling to Analyse Community Information Needs, and Providers: Perceptions from the People of the Broomhall Neighbourhood of Sheffield, UK. This concept is complemented from philosophy (Marx and Engels, [1848] 1976a), and the natural sciences (Hauser, 2006; Sagan and Druyan, 1992), and it served the author to understand better the bigger dimensions of the underlying issues behind social classes and human conflicts. It also served to understand better the contradictions between people (e.g. LIS users with contradictory and mutually exclusive information needs to be provided by libraries and other institutions of information recorded in documents), and how these intensify when these are interrelated with the social class they belong to (Muela-Meza, 2007). This paper also criticises some competing views whose proponents by pretending fallaciously and deceitfully to deny the presence of social class divides in society, such as those rhetorical ploys of post-modernism that propose capitalist-class-driven ideologues of “community cohesion” based on “social capital” (Putnam, 1999). It shows evidence of how those followers (e.g. Pateman, 2006; Contreras Contreras, 2004; Bryson, Usherwood and Proctor, 2003) of capitalist-class ideologues, by doing so they aligned their discourse to that of dominance hierarchies and hegemony against working class people, in LIS and other sciences, and the humanities. It also criticises the postmodern pseudoscience because it pretends to undermine the logical rationality fundamental in LIS and all other sciences. It recommends that LIS theorists and practitioners employ the social class struggles concept as configured here in order to understand better contradictions, conflicts, and struggles within LIS theory and practice, and also to search for broader epistemological aims such as justice and wisdom (Fleissner and Hofkirchner, 1998), concealed by the capitalist or bourgeois and middle classes for their benefit against working class
Literatura y filosofía: Sartre, Martín-Santos y Bartleby
No full textLuis Martín Santos has been, after his soon death, one of the most unfairly forgotten Spanish intellectuals. This situation happens to be even more unjust considering the success of his novel “Time of Silence” and his unfinished “Time of Destruction”. The works of this psychiatrist, philosophically formed in the existentialism tradition, tackle from psychiatric and medical studies to interpretations of Dilthey, Jaspers and Heidegger. Maybe the most important achievement made by Dr. Martín-Santos was the fact of pooling in his novels all the different fields he worked in, namely: existential philosophy, psychiatry and literature. This mutual influence leads to a clearly existential interpretation of the narrative subject and to a nihilist conception of freedom: the nothingness completely understood as Sartre did. And, consequently, the attractiveness of approaching the Spanish author through literary theories that are close to the French contemporary philosophy and the primacy, not only of the existential analysis in literature, but also of the influence of the literary character as a fiction that is able to create possible realities. That is why it is interesting to study “Bartleby the Scrivener” as a paradoxical example of the existential nothingness made flesh. To put it in a nutshell, the existential triviality, a sign of modern times, has been indeed very successfully portrayed by Martín-Santos.Luis Martín-Santos ha sido, tras su temprana muerte, uno de los grandes olvidados entre los intelectuales españoles del franquismo. Olvido especialmente injusto, teniendo en cuenta el éxito de su novela Tiempo de Silencio y su interesante proyecto inacabado Tiempo de Destrucción. La obra de este psiquiatra formado filosóficamente en el existencialismo abarca desde trabajos psiquiátricos relativos a la medicina hasta interpretaciones de Dilthey, Jaspers y Heidegger. Tal vez el mayor logro de Martín- Santos fuera el de aunar en sus novelas los diversos campos de investigación en los que trabajó, a saber: la filosofía existencial, la psiquiatría y la literatura. Esta influencia mutua conduce a una interpretación del sujeto narrativo netamente existencial y a una concepción nihilista de la libertad: la nada en su sentido más sartreano. De ahí el interés de abordar al autor español desde teorías literarias próximas al pensamiento francés contemporáneo y a hacer primar no sólo el análisis existencial del sujeto en la obra literaria, sino también estudiar la influencia del personaje literario como ficción generadora de realidades posibles. Por ello interesa a su vez la aproximación a Bartleby el escribiente como ejemplo paradójico del vacío existencial hecho carne, una inutilidad existencial signo de la modernidad
Tractado de alabança y murmuracion : en el qual se declara quando son merito, quando peccado venial, y quando mortal / compuesto por ... Martín de Azpilcueta Nauarro...
No full textMarca tip. al finEn port. grab. xil. ret. del autorEnc. Perg.Sign.: +4, a-z8, Aa-Ij8, Kk
El gobernador christiano : deducido de la vida de Moysen ...
No full textTít. na antep.: Tomo I. El gobernador christiano: que con el titulo de libro primero escribió su author y se ha dividio en esta impresion en dos tomos para mayor comodidad del publicoSign.: [], b-e, A-Z, 2A-2Z, 3A-3PErro tip. de sign.: b>22< ; 2N consta 2NTexto a dúas co
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