Newman and Twentieth-Century French Theology The presence of J. H. Newman in Y. M. Congar, H. de Lubac and J. Daniélou

En esta tesis se analiza la presencia de John Henry Newman en tres teólogos franceses del siglo XX, a saber: Yves-Marie Congar, Henri de Lubac y Jean Daniélou. En los tres primeros capítulos se traza la introducción del pensamiento de Newman en la teología católica, a través del mundo francófono. A pesar de los primeros intentos de mostrarlo –erróneamente– como el padre del modernismo, Newman gradualmente llegó a ser reconocido como teólogo innovador, pero ortodoxo. Sus contribuciones más importantes son en las áreas de desarrollo doctrinal y la racionalidad de la fe. El capítulo cuarto considera a Newman como profeta y a Congar como perito del Concilio Vaticano II. Los dos capítulos siguientes están dedicados a un análisis de citas de Newman por Congar, de Lubac y Daniélou. Los tres lo citan en sus obras, aunque Daniélou considerablemente menor que los otros dos. El último capítulo tiene un propósito cuádruple: en primer lugar, identificar las citas directas de Newman en discursos de los padres conciliares en el Vaticano II; en segundo lugar, recordar la importancia de Newman para varios peritos francófonos; en tercer lugar, comparar brevemente el pensamiento de Newman con la enseñanza conciliar; en cuarto lugar, estudiar algunas interpretaciones posconciliares de Newman. Se concluye que el ilustre pensador inglés influyó en el contenido del Concilio a través de intermediarios fieles –entre ellos sus verdaderos «intérpretes franceses »–, por estar realmente presente en sus conciencias mientras redactaban los textos del Concilio Vaticano II. Esta influencia newmaniana francesa sigue después del Concilio. -------------- In this thesis, we examine the presence of John Henry Newman in three twentieth-century French theologians, namely, Yves-Marie Congar, Henri de Lubac and Jean Daniélou. In the first three chapters we trace the introduction of Newman’s thought into Catholic theology, via the Francophone world. Despite early attempts to portray him –erroneously– as the father of modernism, Newman gradually came to be recognized as a highly innovative, yet orthodox theologian. His chief contributions are in the areas of doctrinal development and the rationality of the faith. Chapter four considers Newman as prophet and Congar as peritus of the Second Vatican Council. Two subsequent chapters are dedicated to an analysis of citations of Newman by Congar, de Lubac and Daniélou. All three cite him in their works, although Daniélou considerably less than the other two. The final chapter has a fourfold purpose: firstly, to identify direct citations of Newman in Council fathers’ addresses at Vatican II; secondly, to recall Newman’s importance to several Francophone conciliar periti; thirdly, to briefly compare Newman’s thought with conciliar teaching; fourthly, to survey some postconciliar interpretations of Newman. We conclude that the Englishman influenced the Council’s content through faithful intermediaries –among them his genuine «French interpreters»– by being really present in their consciences as they drafted Vatican II. This French Newmanian influence continues after the Council

Newman and Twentieth-Century French Theology. The Presence of J. H. Newman in Y. M. Congar, H. de Lubac y J. Daniélou [Crónica]

Texto leído en la defensa de la Tesis Doctoral el 19 de mayo de 2010 en la Facultad de Teología de la Universidad de Navarra, ante el siguiente tribunal: Prof. José Morales (Presidente), prof. Juan Luis Lorda, prof. Ramiro Pellitero, prof. Juan Alonso, prof. Pablo Martí (Secretario)

Lognormal Properties of SGR 1806-20 and Implications for Other SGR Sources

The time interval between successive bursts from SGR 1806-20 and the intensity of these bursts are both consistent with lognormal distributions. Monte Carlo simulations of lognormal burst models with a range of distribution parameters have been investigated. The main conclusions are that while most sources like SGR 1806-20 should be detected in a time interval of 25 years, sources with means about 100 times longer have a probability of about 5\% of being detected in the same interval. A new breed of experiments that operate for long periods are required to search for sources with mean recurrence intervals much longer than SGR 1806-20.Comment: 4 pages, latex with seperate file containing 2 uuencoded, gzip'ed, tarred, .eps figures. Replaced with file that does not use kluwer.sty to allow automatic postscript generation. To appear in proceedings of ESLAB 2

Multiple-Coincidence Active Neutron Interrogation of Fissionable Materials

In an extension of the Associated Particle Imaging technique that is used for the detection and imaging of hidden explosives, the present measurements use a beam of tagged 14.1 MeV neutrons in coincidence with two or more gammas to probe for the presence of fissionable materials. We have measured neutron-gamma-gamma coincidences with targets of depleted uranium, tungsten, lead, iron, and carbon and will present results that show the multiple-coincidence counting rate for the depleted uranium is substantially higher than any of the non-fissionable materials. In addition, the presence of coincidences involving delayed particle spectra provides a signature for fissionable materials that is distinct from that for non-fissionable ones. Information from the tagged neutron involved in the coincidence event is used to compute the position of the fissionable material in all three dimensions. The result is an imaging probe for fissionable materials that is compact and portable, and produces relatively low levels of background radiation. Simultaneous measurements on packages of interest for both explosives and fissionable materials are now feasible

Fission Detection Using the Associated Particle Technique

A beam of tagged 14 MeV neutrons from the deuterium-tritium (DT) reaction is used to induce fission in a target composed of depleted uranium. The generator yield is 107 neutrons/second radiated into a 4π solid angle. Two 4 in.×4 in. NaI detectors are used for gamma-ray detection. The fission process is known to produce multiple gamma-rays and neutrons. Triple coincidences (α-γ-γ) are measured as a function of neutron flight time up to 90 ns after fission, where the α-particle arises from the DT reaction. A sudden increase in the triple coincidence rate at the location of the material is used to localize and detect fission in the interrogated target. Comparisons are made with experiment runs where lead, tungsten, and iron were used as target materials. The triple coincidence response profile from depleted uranium is noted to be different to those observed from the other target materials. The response from interrogation targets composed of fissile material is anticipated to be even more unique than that observed from depleted uranium

Mass-luminosity relation for FGK main sequence stars: metallicity and age contributions

The stellar mass-luminosity relation (MLR) is one of the most famous empirical "laws", discovered in the beginning of the 20th century. MLR is still used to estimate stellar masses for nearby stars, particularly for those that are not binary systems, hence the mass cannot be derived directly from the observations. It's well known that the MLR has a statistical dispersion which cannot be explained exclusively due to the observational errors in luminosity (or mass). It is an intrinsic dispersion caused by the differences in age and chemical composition from star to star. In this work we discuss the impact of age and metallicity on the MLR. Using the recent data on mass, luminosity, metallicity, and age for 26 FGK stars (all members of binary systems, with observational mass-errors <= 3%), including the Sun, we derive the MLR taking into account, separately, mass-luminosity, mass-luminosity-metallicity, and mass-luminosity-metallicity-age. Our results show that the inclusion of age and metallicity in the MLR, for FGK stars, improves the individual mass estimation by 5% to 15%.Comment: 7 pages, 4 figures, 1 table, accepted in Astrophysics and Space Scienc

Multiple-Coincidence Active Neutron Interrogation of Fissionable Materials

Using a beam of tagged 14.1 MeV neutrons to probe for the presence of fissionable materials, we have measured n-γ-γ coincidences from depleted uranium (DU). The multiple coincidence rate is substantially above that measured from lead, tungsten, and iron. The presence of coincidences involving delayed gammas in the DU time spectra provides a signature for fissionable materials that is distinct from non-fissionable ones. In addition, the information from the tagged neutron involved in the coincidence gives the position of the fissionable material in all three dimensions. The result is an imaging probe for fissionable materials that is more compact and that produces much less radiation than other solutions

Habitable Zones of Host Stars During the Post-MS Phase

A star will become brighter and brighter with stellar evolution, and the distance of its habitable zone will become farther and farther. Some planets outside the habitable zone of a host star during the main sequence phase may enter the habitable zone of the host star during other evolutionary phases. A terrestrial planet within the habitable zone of its host star is generally thought to be suited to life existence. Furthermore, a rocky moon around a giant planet may be also suited to life survive, provided that the planet-moon system is within the habitable zone of its host star. Using Eggleton's code and the boundary flux of habitable zone, we calculate the habitable zone of our Solar after the main sequence phase. It is found that Mars' orbit and Jupiter's orbit will enter the habitable zone of Solar during the subgiant branch phase and the red giant branch phase, respectively. And the orbit of Saturn will enter the habitable zone of Solar during the He-burning phase for about 137 million years. Life is unlikely at any time on Saturn, as it is a giant gaseous planet. However, Titan, the rocky moon of Saturn, may be suitable for biological evolution and become another Earth during that time. For low-mass stars, there are similar habitable zones during the He-burning phase as our Solar, because there are similar core masses and luminosities for these stars during that phase.Comment: 6 pages, 7 figures. Accepted by Ap & S

Time and length scales in supercooled liquids

We numerically obtain the first quantitative demonstration that development of spatial correlations of mobility as temperature is lowered is responsible for the ``decoupling'' of transport properties of supercooled liquids. This result further demonstrates the necessity of a spatial description of the glass formation and therefore seriously challenges a number of popular alternative theoretical descriptions.Comment: 4 pages, 4 figs; improved version: new refs and discussion

The nature of slow dynamics in a minimal model of frustration-limited domains

We present simulation results for the dynamics of a schematic model based on the frustration-limited domain picture of glass-forming liquids. These results are compared with approximate theoretical predictions analogous to those commonly used for supercooled liquid dynamics. Although model relaxation times increase by several orders of magnitude in a non-Arrhenius manner as a microphase separation transition is approached, the slow relaxation is in many ways dissimilar to that of a liquid. In particular, structural relaxation is nearly exponential in time at each wave vector, indicating that the mode coupling effects dominating liquid relaxation are comparatively weak within this model. Relaxation properties of the model are instead well reproduced by the simplest dynamical extension of a static Hartree approximation. This approach is qualitatively accurate even for temperatures at which the mode coupling approximation predicts loss of ergodicity. These results suggest that the thermodynamically disordered phase of such a minimal model poorly caricatures the slow dynamics of a liquid near its glass transition