Promoción de la lectura desde la radio pública en el Estado de México. Una experiencia

Se hizo una reflexión sobre la experiencia de promoción de la lectura en la radio pública, específicamente la llevada a cabo por Radio Mexiquense. Se describieron los antecedentes del proyecto, así como los productos que se lograron. Se destacó la confluencia de voluntades, creatividad y trabajo de quienes buscan fomentar en el público radioescucha el gusto por la lectura y la apreciación de las artes en general

Effectiveness of Different Kidney Exchange Mechanisms on Improving Living Donor Transplantation in Chile

Chile has a very low cadaveric organ donation rate; at the same time, living donor transplantation activity is low. The purpose of this paper is to analyze the impact on the number and quality of transplants of the potential application of different mechanisms for kidney exchange from living donors to patients on Chile’s waiting list.Organ Donation Rate, living kidney donation, kidney exchange mechanisms

Thermal Pions ns Isospin Chemical Potential Effects

The density corrections, in terms of the isospin chemical potential $\mu_I$, to the mass of the pions are investigated in the framework of the SU(2) low energy effective chiral invariant lagrangian. As a function of temperature and $\mu_I =0$, the mass remains quite stable, starting to grow for very high values of $T$, confirming previous results. However, the dependence for a non-vanishing chemical potential turns out to be much more dramatic. In particular, there are interesting corrections to the mass when both effects (temperature and chemical potential) are simultaneously present. At zero temperature the $\pi ^{\pm}$ should condensate when $\mu_{I} = \mp m_{\pi}$. This is not longer valid anymore at finite $T$. The mass of the $\pi_0$ acquires also a non trivial dependence on $\mu_I$ at finite $T$.Comment: 5 pages, 2 figures. To appear in the proceedings of the International High-Energy Physics Conference on Quantum Chromodynamics QCD02, Montpellier, 2-9 July (2002

Vector Meson Dominance, Axial Anomaly and the Thermal behavior of gρωπ(T)g_{\rho \omega \pi}(T)

By using a thermal Finite Energy QCD Sum Rule, we are able to establish the temperature dependence of the $g_{\omega \rho \pi}(T)$ strong coupling. It turns out that this coupling decreases as a function of temperature, vanishing at the critical temperature. This corresponds to a possible deconfining phenomenological signal. This result, together with the Vector Meson Dominance (VMD) expression for the amplitude $\pi ^{0} \to \gamma \gamma$, allows us to establish that this amplitude also vanishes at the critical temperature, in agreement with previous independent analysis. This results supports, once again, the validity of VMD at finite temperature. Several posssible scenarios are discussed. However, if VMD would not hold at finite temperature, then we will not be able to find a prediction for the thermal behavior of the $\pi ^{0} \to \gamma \gamma$ amplitude.Comment: Talk given at the QCD Euroconference, Montpellier July 2000 5 page

Impact of emotional states on the effective range of electric vehicles

Over the last decade, a large interest in reducing transportation dependence on fossil fuels as well as the cost reduction in battery technologies, have driven the electric cars market uptake. However, information is scarce about factors that affect the driving range. Besides the battery’s capacity, other factors may affect the overall vehicle’s range, for instance: driving behavior, fluctuations in temperature, number of battery cycles, etc. Accordingly, this paper proposes an approach to evaluate the impact of emotions and driving behavior on the range of electric cars using physiological signals and vehicle performance features. This work was developed in three stages. During the first stage, the heart rate and galvanic skin response of 20 volunteers were recorded from biosensors. The vehicle’s data was obtained from a driving simulator. Afterward, the driving profile was used as an input source to simulate an object-oriented electric vehicle model to estimate the driving range. Finally, during the third stage, feature selection techniques and subject-dependent classifiers were evaluated using metrics such as the accuracy and the area under the curve. Support-vector machines with radial kernel and tree-bagged models provided the best global performance with the bio-signals and driving performance subsets to discriminate between calm and aggressive driving. Results showed that driving behavior could be evaluated from physiological and vehicle features. Furthermore, the subjects’ statements showed that users’ beliefs, thoughts, and prior social contexts influence the way they perceive driving behavior. Reductions in the range of up to 68% when driving aggressively compared to a calm manner were found. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature

Effect of influenza-induced fever on human bioimpedance values

BACKGROUND AND AIMS: Bioelectrical impedance analysis (BIA) is a widely used technique to assess body composition and nutritional status. While bioelectrical values are affected by diverse variables, there has been little research on validation of BIA in acute illness, especially to understand prognostic significance. Here we report the use of BIA in acute febrile states induced by influenza. METHODS: Bioimpedance studies were conducted during an H1N1 influenza A outbreak in Venezuelan Amerindian villages from the Amazonas. Measurements were performed on 52 subjects between 1 and 40 years of age, and 7 children were re-examined after starting Oseltamivir treatment. Bioelectrical Impedance Vector Analysis (BIVA) and permutation tests were applied. RESULTS: For the entire sample, febrile individuals showed a tendency toward greater reactance (p=0.058) and phase angle (p=0.037) than afebrile individuals, while resistance and impedance were similar in the two groups. Individuals with repeated measurements showed significant differences in bioimpedance values associated with fever, including increased reactance (p<0.001) and phase angle (p=0.007), and decreased resistance (p=0.007) and impedance (p<0.001). CONCLUSIONS: There are bioelectrical variations induced by influenza that can be related to dehydration, with lower extracellular to intracellular water ratio in febrile individuals, or a direct thermal effect. Caution is recommended when interpreting bioimpedance results in febrile states

Individual variance in the attributes of Clusia salvinii Donn. Smith associated with the attraction of frugivores in the dispersal of fruits and seeds

Seed dispersal is one of the processes of plant-frugivore interactions that involves characteristics specific to the plant effecting the attraction of frugivores. In this paper, the individual variance in the attributes of Clusia salvinii in relation to the attraction of frugivores and its effect on the dispersal of fruits and seeds in the Reserva de Nanchititla, State of Mexico was studied. The morphometric characteristics of 25 trees of the C. salvinii species were evaluated (height, coverage, number of fruit, number of seeds per fruit, and fruit below the canopy). The removal of fruits and seeds (dispersal) was also estimated, as well as some of its attributes as estimators of the quantity of biomass assigned to the reproduction or as compensation for the dispersers (average weight per tree, average weight of the arils per tree). According to the results, tree height and harvest size or fruit production have an effect on the removal of seeds. On the other hand, the mass of the fruit, aril and seed had no relation to the removal of the fruit. Tree height and the quantity of fruit play an important role in the attraction of dispersers

Un modelo inspirado en DEA para evaluar la eficiencia de la educación en los países de la OCDE

In this paper empirical application to the study about the efficiency of the performance of the educational systems across countries is developed. With the information published in the PISA 2015, Data Envelopment Analysis methodology is considered to evaluate the efficiency in the use of the resources devoted to education by OECD countries. Similar to previous studies, the main resources needed for learning, financial, human resources, material and time have been considered. Alternatively to previous proposals, the mean scores have not been included as the output of the process. Instead of that, to quantify the results of the learning process, the percentages of students in each proficiency level of the PISA test have been computed.An ad hoc model based on the Additive DEA-model is proposed, adapting the formulation to the particular features of the vector of outputs considered. Considering that the aggregate value of output is fixed and that the relative weight of the outputs differs, inefficient units improve their performance by reallocating that fixed value among different outputs, moving units from the less valued to the most valued ones.En el presente trabajo se presenta un modelo para el estudio de la eficiencia de los sistemas educativos de los países de la OCDE. A partir de la información publicada en el informe PISA 2015, se utiliza la metodología del Análisis Envolvente de Datos (DEA) para analizar la eficiencia en el uso de los recursos destinados a la educación en los países OCDE. Siguiendo la línea de anteriores estudios, se consideran los principales recursos destinados a la educación, esto es, recursos materiales, recursos humanos y tiempo dedicado a la enseñanza. De manera alternativa a los estudios anteriores, no se consideran las puntuaciones medias de los exámenes como las salidas del sistema. En nuestro estudio, la cuantificación de los resultados se realiza a través de los porcentajes de estudiantes que alcanzan cada nivel de desempeño en las pruebas normalizadas realizadas en PISA. Se desarrolla un nuevo modelo de evaluación basado en el modelo aditivo dentro de la metodología DEA, en el que tanto la formulación como los objetivos se adaptan a las características de las variables propuestas. Considerando que el valor agregado de las salidas está fijado y que los pesos que deben asignarse a cada output deben estar ordenados, el modelo evalúa los posibles movimientos de outputs desde las categorías menos valoradas a las más valoradas.Universidad Pablo de Olavid

Thermal Pions at Finite Isospin Chemical Potential

The density corrections, in terms of the isospin chemical potential $\mu_I$, to the mass of the pions are studied in the framework of the SU(2) low energy effective chiral lagrangian. The pion decay constant $f_{\pi}(T, \mu_{I})$ is also analized. As a function of temperature for $\mu_I =0$, the mass remains quite stable, starting to grow for very high values of $T$, confirming previous results. However, there are interesting corrections to the mass when both effects (temperature and chemical potential) are simultaneously present. At zero temperature the $\pi ^{\pm}$ should condensate when $\mu_{I} = \mp m_{\pi}$. This is not longer valid anymore at finite $T$. The mass of the $\pi_0$ acquires also a non trivial dependence on $\mu_I$ due to the finite temperature.Comment: 13 pages, 5 figure

Propuesta del perfeccionamiento del contrato electrónico frente a la manifestación de la voluntad en el Perú

El presente trabajo de investigación tuvo como objetivo general analizar el perfeccionamiento del contrato electrónico frente a la manifestación de la voluntad; se realizó el estudio a base de la normativa peruana e internacional, relacionada a la forma en cómo se vienen celebrando dichos contratos. La investigación fue tipo básica, con diseño jurídico-propositivo. Para la elaboración del estudio, se tuvo como categorías contratos y la manifestación de la voluntad, como subcategorías de contratos, contratos electrónicos y acto jurídico; respecto de la segunda categoría, voluntad de las partes. Asimismo, se utilizaron las técnicas e instrumentos contenidos en las guías de entrevista, cuestionario y análisis documental; producto del análisis se determinó que no existe una normativa que regule los medios para la manifestación de la voluntad en la celebración del contrato electrónico. De tal manera, se concluyó que, era necesario incorporar al Título XIV en la Sección Segunda del Código Civil un estipulado que defina, regule y formalice los contratos electrónicos frente a la manifestación de la voluntad