Recent experimental evidence about the possibility of "absolute negative temperature" states in physical systems has triggered a stimulating debate about the consistency of such a concept from the point of view of Statistical Mechanics. It is not clear whether the usual results of this field can be safely extended to negative-temperature states; some authors even propose fundamental modifications to the Statistical Mechanics formalism, starting with the very definition of entropy, in order to avoid the occurrence of negative values of the temperature tout-court. The research presented in this thesis aims to shed some light on this controversial topic. To this end, a particular class of Hamiltonian systems with bounded kinetic terms, which can assume negative temperature, is extensively studied, both analytically and numerically. Equilibrium and out-of-equilibrium properties of this kind of system are investigated, reinforcing the overall picture that the introduction of negative temperature does not lead to any contradiction or paradox.
Recent experimental evidence about the possibility of "absolute negative temperature" states in physical systems has triggered a stimulating debate about the consistency of such a concept from the point of view of Statistical Mechanics. It is not clear whether the usual results of this field can be safely extended to negative-temperature states; some authors even propose fundamental modifications to the Statistical Mechanics formalism, starting with the very definition of entropy, in order to avoid the occurrence of negative values of the temperature tout-court. The research presented in this thesis aims to shed some light on this controversial topic. To this end, a particular class of Hamiltonian systems with bounded kinetic terms, which can assume negative temperature, is extensively studied, both analytically and numerically. Equilibrium and out-of-equilibrium properties of this kind of system are investigated, reinforcing the overall picture that the introduction of negative temperature does not lead to any contradiction or paradox.
The purpose of this book is to explore what a liturgical approach to the Bible looks like and what hermeneutical implications this might have: How does the liturgy celebrate, understand, and communicate Scripture? The starting point is Pope Benedict's affirmation that "a faith-filled understanding of sacred Scripture must always refer back to the liturgy" (Verbum Domini 52). The first part of the book (based on SC 24) provides significant examples to demonstrate: The liturgical order of readings intertextually combines Old Testament and New Testament readings using manifold hermeneutical principles, specifically how the psalms show the wide range of interpretations the liturgy employs. Prayers are biblically inspired and help to appropriate Scripture personally. The hymns convey Scripture in a poetic way. Signs and actions such as foot-washing or the Ephphetha rite enact Scripture. The study considers the Mass, the sacraments and the Liturgy of the Hours. In the second part, Benini systematically focuses on the various dimensions of liturgical hermeneutics of the Bible, which emerge from the first part. The study reflects the approaches the liturgy offers to Scripture and its liturgical reception. It explores theological aspects such as the unity of the two Testaments in Christ's paschal mystery or the anamnesis as a central category in both Scripture and liturgy. The liturgy does not understand Scripture primarily as a document of the past, but celebrates it as a current and living "Word of the Lord," as a medium of encounter with God: Scripture is sacramental. Liturgical Hermeneutics of Sacred Scripture seeks to contribute not only to the comparison of the Roman, Ambrosian, and Byzantine Rite regarding the Word of God, but most of all to the overall "liturgical approach" to Scripture. As such, it promotes an interdisciplinary dialogue of liturgical and biblical studies.
En su novela El cielo protector, Paul Bowles distingue entre el turista y el viajero. Mientras el turista siempre sabe cuándo y cómo volverá a su hogar, el viajero se lanza a la aventura sin conocer exactamente ni su ruta ni siquiera si algún día regresará a su casa. En el mundo antiguo, el viaje tenía siempre un punto de descubrimiento, un componente intrínseco de aventura motivada por las condiciones de los desplazamientos y, muchas veces, por el desconocimiento de los lugares a los que el viajero pretendía arribar. El viaje en la Antigüedad fue el tema del que se ocupó el V Coloquio Internacional de Historia Antigua Universidad de Zaragoza, que se celebró entre los días 4 y 6 de junio de 2009 en la Biblioteca de Humanidades María Moliner de la Universidad de Zaragoza bajo el título Viajeros, peregrinos y aventureros en el mundo antiguo. En él participaron estudiosos procedentes de diversas universidades y centros de investigación españoles y extranjeros: Münster (Alemania), Ohio (Estados Unidos), Foggia (Italia), CSIC de Roma, Málaga, Vitoria, Salamanca, Madrid, Alcalá de Henares, Barcelona y Zaragoza. Desde diversas perspectivas todos ellos abordaron el tema del viaje y el viajero en la Antigüedad, y este volumen recoge las comunicaciones presentadas durante el coloquio, celebrado como viene siendo habitual con carácter bienal.
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