1,198 research outputs found
Javier LOZANO BARRAGÁN (ed.), La evangelización fundante en América Latina, (Estudio histórico del siglo XVI), CELAM, (Departamento de Educación), Bogotá 1990, 417 pp., 14 x 21. [RECENSIÓN]
Antonin Dalmace SERTILLANGES, S. Tommaso d'Aquino, 4° ed. italiana con introduzione di A. Piolanti, Ed. Vaticana («Classici del tomismo», 3), Città del Vaticano 1988, 126 pp., 17 x 24. [RECENSIÓN]
H. MCKENNIE GOODPASTURE (ed.), Cross and Sword. An Eyewitness History of Christianity in Latin America, Orbis Books, Maryknoll, New York 1989, 314 pp., 15 x 23,5. [RECENSIÓN]
José Ignacio SARANYANA (dir.), Evangelización y Teología en América (siglo XVI). Actas del X Simposio Internacional de Teología de la Universidad de Navarra, Servicio de Publicaciones de la Universidad de Navarra, Pamplona 1990, 2 vols., 1584 pp., 16 x 24. [RECENSIÓN]
Jorge M. AYALA, Gracián: vida, estilo y reflexión, Ed. Cincel («Historia de la Filosofía», 37), Madrid 1987, 190 pp., 11 x 18,5. [RECENSIÓN]
Rate of Convergence to Barenblatt Profiles for the Fast Diffusion Equation
We study the asymptotic behaviour of positive solutions of the Cauchy problem
for the fast diffusion equation near the extinction time. We find a continuum
of rates of convergence to a self-similar profile. These rates depend
explicitly on the spatial decay rates of initial data
Experimental Estimation of Slipping in the Supporting Point of a Biped Robot
When developing a gait cycle on a low-friction surface, a biped robot eventually tends to slip. In general, it is commonto overcome this problem by means of either slow movements or physical adaptations of the robot at the contact pointwith the walking surface in order to increase the frictional characteristics. In the case of slipping, several types ofsensors have been used to identify the relative displacement at the contact point of the supporting leg with the walkingsurface for control purposes. This work is focused on the experimental implementation of a low-cost force sensor as ameasurement system of the slipping phenomenon. It is shown how, supported on a suitable change of coordinates,the force measurement at the contact point is used to obtain the total displacement at the supporting point due to thelow-friction conditions. This is an important issue when an accurate Cartesian task is required
Somatic education approaches in piano studies: A snapshot of Spanish conservatoire practices
Somatic education in professional instrumental teaching is an emerging field in Spanish conservatoire culture. Although we find that the Alexander Technique was included in some European institutions since the middle of the XXth Century, this was not the case in the Spanish context. By means of a qualitative study, through document analysis and fifteen in-depth interviews with somatic teachers, the statutory frameworks of professional Piano studies and teaching plans related to somatic education in Spanish conservatoires, the principles that support them and the current practices that are undertaken in professional piano studies were analyzed. We found that there are eclectic approaches and practices in correlation with the background of the teachers in charge of the courses. Four main orientations can be described: somatic education per se; ergonomics and postural technique; body communication, training and technique; and mental and concentration control techniques. Further research to explore the interrelationships between somatic approaches and instrumental teaching would greatly benefit the fieldS
Effect of high-pressure processing of Atlantic mackerel (Scomber scombrus) on biochemical changes during commercial frozen storage
This research focuses on biochemical changes related to quality losses observed in Atlantic mackerel (Scomber scombrus) muscle stored under commercial frozen storage conditions (9 months, −18 °C) when subjected to highhydrostatic pressure (HHP) treatments (125, 150, 175, and 200 MPa for 0 min) before freezing. After freezing, free fatty acid (FFA) formation (lipid hydrolysis assessment) showed a marked inhibition in HHP-treated fish and during frozen storage of samples treated at 175 MPa. Fluorescence ratio (FR) assessment of tertiary lipid oxidation showed a partial inhibitory effect during the 0–9-month period for samples treated at 175 and 200 MPa. After a 3-month storage of samples treated at these pressure levels, one-dimensional SDS-PAGE analysis of the sarcoplasmic protein fraction revealed the disappearance of a band; additionally, samples treated at 150 MPa showed the same effect at month 9. After gel excision, trypsin
digestion, tandem mass spectrometry (MS/MS), and sequence database analysis, the band was identified as phosphoglycerate mutase 2 (28.7 kDa). On the other hand, HHP processing did not show a significant effect on trimethylamine (TMA) values, primary and secondary lipid oxidation, PUFA levels, 1-D myofibril protein pattern, and the activity of acid phosphatase and cathepsins B and D. Biochemical quality indices such as FFA, TMA, and FR and the activity of acid phosphatase and cathepsin B showed a progressive increase throughout the frozen storage of all samples
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