An analysis of the fluctuations of the geomagnetic dipole

The time evolution of the strength of the Earth's virtual axial dipole moment (VADM) is analyzed by relating it to the Fokker-Planck equation, which describes a random walk with VADM-dependent drift and diffusion coefficients. We demonstrate first that our method is able to retrieve the correct shape of the drift and diffusion coefficients from a time series generated by a test model. Analysis of the Sint-2000 data shows that the geomagnetic dipole mode has a linear growth time of 13 to 33 kyr, and that the nonlinear quenching of the growth rate follows a quadratic function of the type [1-(x/x0)^2]. On theoretical grounds, the diffusive motion of the VADM is expected to be driven by multiplicative noise, and the corresponding diffusion coefficient to scale quadratically with dipole strength. However, analysis of the Sint-2000 VADM data reveals a diffusion which depends only very weakly on the dipole strength. This may indicate that the magnetic field quenches the amplitude of the turbulent velocity in the Earth's outer core.Comment: 11 pages, 6 figure

Filmografía

Genover, J. (1992). Filmografía. Nosferatu. Revista de cine. (10):76-77. http://hdl.handle.net/10251/40836.Importación Masiva76771

Un original tratamiento del espacio fílmico

Hernandez, J. (1992). Un original tratamiento del espacio fílmico. Nosferatu. Revista de cine. (10):34-39. http://hdl.handle.net/10251/40830.Importación Masiva34391

Architecture in a Mode of Distraction: Eight Takes on Jacques Tati’s Playtime

La oscuridad, la inquietud y la calidad de la dislocación de la relación entre el cine y la arquitectura son revelados por su opuesto, de forma divertida, en la secuencia del principio del filme Playtime de Jacques Tati, en la cual un hospital y un aeropuerto son vistos como sinónimos arquitectónicos. La ciudad visitada desde este aeropuerto-hospital, situada en la periferia de París, sirve ahora como substituto de la experiencia real de París. Buscar diferencias sólo sirve para advertir su divertido juego, desestabilizador, de semejanzas recogido en este ensayo.ENG: The dark, disquieting, and dislocating quality of the relationship between film and architecture is revealed in its opposite light, amusingly teased out, in Jacques Tati’s opening sequence to the film Playtime, in which hospital and an airport are seen as architecturally synonymous. The city that this airport-cum-hospital serves is itself, in the periphery of Paris that now substitutes for the real experience of Paris. The overlay of seeming differences only serves to point out their amusing, if unsettling, similarities gathered in this essay.Peer Reviewe

Monsieur Hulot frente a las nuevas tecnologías de la imagen

Quintana, A. (1992). Monsieur Hulot frente a las nuevas tecnologías de la imagen. Nosferatu. Revista de cine. (10):40-47. http://hdl.handle.net/10251/40831.Importación Masiva40471

M. Hulot y los ridículos preciosos

Haro Tecglen, E. (1992). M. Hulot y los ridículos preciosos. Nosferatu. Revista de cine. (10):14-17. http://hdl.handle.net/10251/40827.Importación Masiva14171

Arrhythmogenic right ventricular cardiomyopathy/dysplasia: Analysis based on six cases

Background: We sought to investigate the profile of symptoms and results of investigations among six cases of suspected arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D). Methods: The diagnosis of ARVC/D was made on the basis of standardised diagnostic criteria proposed by the study group on ARVC/D of the European Society of Cardiology. A study was conducted involving six patients with suspected ARVC/D that were diagnosed and treated at our centre in the years 1992-2004. Results: All patients presented with a typical history and with similar complaints and symptoms: limitation of exercise toleration, palpitations, dizziness, presyncope and syncope. In all six cases ECG abnormalities were detected, namely T wave inversion, prolonged QRS complexes in V1-V3 or/and epsilon waves. Echocardiographic abnormalities were also detected in all cases in the form of global or segmental dilation and a reduction in right ventricular ejection fraction, morphological irregularity of the endocardium and tricuspidal valve insufficiency. On the basis of diagnostic criteria we diagnosed ARVC/D in four cases and the borderline variant of ARVC/D in the remaining two. Conclusions: ARVC/D is a heart muscle disease with varied and complex presentation. The profile of symptoms and the results of investigations and diagnostic procedures are varied and can assume various combinations. Accurate diagnosis can be established in most cases as a result of the non-invasive and widely-used techniques of ECG, 24-hour Holter monitoring and echocardiography. (Cardiol J 2007; 14: 396-401

Crisis global y crisis rural: movimientos sociales y alternativas hacia la sustentabilidad

Trabajo sobre los diferentes movimientos sociales que buscan construir alternativas donde la noción de sustentabilidad rural ocupa un lugar importante.ITESO, A.C

Beyond the Physical:Exploring the Function of Disease in Selected Words of 19th- and 20th- Century French Literature

My thesis, Beyond the Physical, is a project that aims to investigate the function of disease in 19th and 20th century French literature through the analysis of the narrative techniques of three fictional novels and secondary sources. This work is an interdisciplinary study that combines the social and scientific aspects of Public Health with literary elements present in French and Francophone Studies. In La Cousine Bette (1847), a Realist novel by Honoré de Balzac, Valérie Marneffe\u27s obsession with greed and attention leads her to pursue various extramarital affairs in her efforts to augment her financial status. Her death by syphilis eliminates her ability to use sex and beauty to attract men only after she has settled on a wealthy entrepreneurial lover. Nana (1880), by Émile Zola, is a Naturalist novel about a young Parisian prostitute who dies from small pox, a 19th- century epidemic, after she uses her body to exploit and manipulate high society men in her endeavors of social mobility and status. Both La Cousine Bette and Nana employ disease to objectively comment on the interactions and lifestyles of the bourgeois and lower classes and the consequence of altering one\u27s reality. Le Protocol Compassionnel (1991), by Hervé Guibert, shows a shift in the conversation about disease. Rather than observing the interactions of the infected individual in a social setting, the genre of AIDS literature switches from the he/she to the I to offer readers an intimate account of one\u27s existence. In these three novels, disease takes on many different functions, but what all of these works share is the treatment and discussion of illness beyond its physical and biological roles