275 research outputs found
mohller/AstroPhoMes: AstroPhoMes v0.4
No full textThe code has been updated to reflect the state of the paper L. Morejon et al 2019 at the moment it was accepted for publication.
Changes from previous version:
Corrected in EmpiricalModel class the pion inclusive cross section treatment for energies above 1 GeV (see paper)
Included a test to evaluate the correctness of the implementation
Modifications to the Howto_example.ipynb notebook to be consistent with the rest of the changes
Further testing is ongoing..
Paralelepípedos: poesias
No full textParalelepípedos: poesias de Leonel Coelho is a work of poetry that is part of the Paraíba Literária collection of the Central Library of the Federal University of Paraíba. This book is a lyrical expression of life and culture in Paraíba, capturing the essence of the state through the lens of poetry. Leonel Coelho, an author from Paraíba, uses the metaphor of parallelepipeds to explore the complexity and beauty of everyday life. Each poem is like a parallelepiped, unique in its shape and texture, but together they form a path that takes us through human experiences. In short, Paralelepípedos: poesias is a work that celebrates life in all its forms. It is a valuable addition to the Paraíba Literária collection and a testament to the literary talent that flourishes in Paraíba. Recommended for anyone interested in poetry and the rich culture of the Brazilian Northeast.Paralelepípedos: poesias de Leonel Coelho é uma obra de poesia que faz parte da
coleção Paraíba Literária da Biblioteca Central da Universidade Federal da Paraíba. Este
livro é uma expressão lírica da vida e da cultura paraibana, capturando a essência do
estado através da lente da poesia.
Leonel Coelho, um autor paraibano, usa a metáfora dos paralelepípedos para explorar a
complexidade e a beleza da vida cotidiana. Cada poema é como um paralelepípedo,
único em sua forma e textura, mas juntos formam um caminho que nos leva através das
experiências humanas.
Em resumo, Paralelepípedos: poesias é uma obra que celebra a vida em todas as suas
formas. É uma adição valiosa à coleção Paraíba Literária e um testemunho do talento
literário que floresce na Paraíba. Recomendado para qualquer pessoa interessada em
poesia e na rica cultura do Nordeste brasileiro
AstroPhoMes: Photomeson models for UHECR interactions with photons
No full text<p>This is a code to calculate cross sections for photohadronic interactions in the photomeson regime. It is intended to be used in the simulation of sources and transport of Ultra-High Energy Cosmic Rays and the related production of neutrinos and secondary nuclei.</p>
New Interaction Models of Ultra-high-energy Cosmic Rays from a Nuclear Physics Approach
No full textDer Ursprung der ultrahochenergetischen kosmischen Strahlung (UHECRs) benötigt Modelle der photonuklearen kosmischen Strahlungsinteraktionen. In dieser Arbeit stelle ich Modelle vor, die drei Aspekte der Modellierung der Hochenergie-Astronuklearphysik verbessern: die Photomesonenproduktion durch Kerne der kosmischen Strahlung, die schwerer als Protonen sind, die Gammastrahlenemission von instabilen Kernen, die durch den Photodisintegrationsprozess der kosmischen Strahlung erzeugt werden, und die Simulation der extragalaktischen Ausbreitung von Kernen, die schwerer als Eisen sind (sogenannte superschwere Isotope). Das Photomesonenmodell ist das erste in der Literatur, das über das einfache Prinzip der Nukleonen-Superposition hinausgeht. Es liefert eine detailliertere Beschreibung der inelastischen Wirkungsquerschnitte und des emittierten Spektrums von Sekundärteilchen, einschließlich Isotopen und Pionen, die zu Photonen und Neutrinos führen. Die Auswirkungen des Modells werden in Simulationen von Gammastrahlenausbrüchen und Gezeitenstörungsereignissen gezeigt, und es beeinflusst signifikant die hochenergetische Neutrinoemission, die chemische Zusammensetzung und das Spektrum der emittierten UHECRs. Das zweite Modell beschreibt die Photoproduktion aus den De-Exzitationen und Zerfällen instabiler Kerne, die aus dem Photozerfall der kosmischen Strahlung in Wechselwirkung mit astrophysikalischen Photonen resultieren sollen. Ihre Wirkung wird am Photoemissionsspektrum des Kerns von Centaurus A veranschaulicht und mit ähnlichen Arbeiten verglichen, mit denen es Unstimmigkeiten gibt. Schließlich wird der Photodesintegration von UHECR überschweren Kernen diskutiert. Eine Wechselwirkungstabelle wird unter Verwendung von Querschnitten aus TALYS konstruiert, und die Wechselwirkungsraten werden im Zusammenhang mit der extragalaktischen Ausbreitung berechnet. Überschwere Kerne breiten sich in bestimmten Energiebereichen weiter aus als leichtere Kerne.The origin of the ultra-high-energy cosmic rays (UHECRs) is still unknown. Photonuclear interactions of cosmic rays are key to understanding this problem in a multimessenger context. Nuclear physics insights are crucial in building accurate models to interpret the data that indicates UHECR can be heavier than protons. This thesis presents models that improve three aspects of high-energy astronuclear physics modelling: photomeson production by cosmic-ray nuclei heavier than protons, gamma-ray emission from unstable nuclei created by the photodisintegration of cosmic rays, and the simulation of extragalactic propagation of nuclei heavier than iron (so-called superheavy isotopes). The photomeson model is the first in the literature to go beyond the simple principle of nucleon superposition. It provides a more accurate description of the inelastic cross sections, and the emitted spectrum of secondary particles, including isotopes and pions which lead to photons and neutrinos.The model’s impact is shown in simulations of gamma-ray bursts and tidal disruption events, and it affects significantly the high-energy neutrino emission, the chemical composition and the spectrum of the emitted UHECRs. The second model describes photoproduction from de-excitations and decay of unstable nuclei, which are expected to be produced in photo-disintegration of cosmic rays interacting with astrophysical photons. Its impact is illustrated in the photo-emission from the core of the Centaurus A and compared to similar works with which is in disagreement. This supports the need for sufficiently accurate models. Lastly, the photodisintegration of UHECR superheavy nuclei is discussed. An interaction table is produced with cross sections obtained from TALYS and the interaction rates computed in the context of extragalactic propagation. Superheavy nuclei propagate further than lighter nuclei in certain energy ranges. The models developed are publicly available as open-source software
mohller/AstroPhoMes: AstroPhoMes v0.2
No full text<p>Release for production, with updates on file structure, license and readme files.</p>
La ecopoesía etnocultural en Leonel Lienlaf: interpretaciones ecocríticas en algunas de sus poesías
No full textThis article will analyse from an ecocritical perspective poems written by Mapuche poet Leonel Lienlaf. Several poems from Se ha despertado el ave de mi corazón (autotranslated into Spanish by the author) will be examined to underline the importance of the intricate connection between human and nature. The symbolic dimension used by the author intertwines with the ethnocultural dimension of the mapuches, which will however remain of secondary importance for the investigation. The article aims to emphasize the centrality of communication between nature and the human that Lienlaf conveys through his poems, one that ultimately becomes a coexistence with the enviroment.Este artículo analiza la poesía de Leonel Lienlaf, poeta mapuche, desde una óptica ecocrítica. Para ello, se toman varias poesías del poemario Se ha despertado el ave de mi corazón (autotraducidas al español por el autor) con el fin de subrayar la importancia de la relación hombre-naturaleza. La dimensión simbólica utilizada por el autor se conecta directamente con la dimensión etnocultural del pueblo mapuche que, si bien no es el objeto principal del análisis, será igualmente importante considerarla. El artículo quiere destacar el diálogo con la naturaleza queLienlaf pone de manifiesto en sus poesías y que se convierte, en última instancia, en una coexistencia con el medio ambiente.
La ecopoesía etnocultural en Leonel Lienlaf: interpretaciones ecocríticas en algunas de sus poesías
No full textThis article will analyse from an ecocritical perspective poems written by Mapuche poet Leonel Lienlaf. Several poems from Se ha despertado el ave de mi corazón (autotranslated into Spanish by the author) will be examined to underline the importance of the intricate connection between human and nature. The symbolic dimension used by the author intertwines with the ethnocultural dimension of the mapuches, which will however remain of secondary importance for the investigation. The article aims to emphasize the centrality of communication between nature and the human that Lienlaf conveys through his poems, one that ultimately becomes a coexistence with the enviroment.Este artículo analiza la poesía de Leonel Lienlaf, poeta mapuche, desde una óptica ecocrítica. Para ello, se toman varias poesías del poemario Se ha despertado el ave de mi corazón (autotraducidas al español por el autor) con el fin de subrayar la importancia de la relación hombre-naturaleza. La dimensión simbólica utilizada por el autor se conecta directamente con la dimensión etnocultural del pueblo mapuche que, si bien no es el objeto principal del análisis, será igualmente importante considerarla. El artículo quiere destacar el diálogo con la naturaleza que Lienlaf pone de manifiesto en sus poesías y que se convierte, en última instancia, en una coexistencia con el medio ambiente
La ecopoesía etnocultural en Leonel Lienlaf: interpretaciones ecocríticas en algunas de sus poesías
No full textThis article will analyse from an ecocritical perspective poems written by Mapuche poet Leonel Lienlaf. Several poems from Se ha despertado el ave de mi corazón (autotranslated into Spanish by the author) will be examined to underline the importance of the intricate connection between human and nature. The symbolic dimension used by the author intertwines with the ethnocultural dimension of the mapuches, which will however remain of secondary importance for the investigation. The article aims to emphasize the centrality of communication between nature and the human that Lienlaf conveys through his poems, one that ultimately becomes a coexistence with the enviroment.Este artículo analiza la poesía de Leonel Lienlaf, poeta mapuche, desde una óptica ecocrítica. Para ello, se toman varias poesías del poemario Se ha despertado el ave de mi corazón (autotraducidas al español por el autor) con el fin de subrayar la importancia de la relación hombre-naturaleza. La dimensión simbólica utilizada por el autor se conecta directamente con la dimensión etnocultural del pueblo mapuche que, si bien no es el objeto principal del análisis, será igualmente importante considerarla. El artículo quiere destacar el diálogo con la naturaleza queLienlaf pone de manifiesto en sus poesías y que se convierte, en última instancia, en una coexistencia con el medio ambiente.
Numerical studies of a layered lithium-boron target for laser-driven aneutronic fusion reactions
No full textThis paper explores a novel target design for laser-driven, aneutronic, proton-boron and proton-lithium fusion reactions consisting of a stack of boron and lithium foils. In contrast to a homogeneous target, this multi-layer setup provides additional fusion channels in the different materials. The composition of the layers is chosen in descending order of the fusion reactions\u27 thresholds, facilitating the fusion of protons that penetrate further into the material despite their energy losses due to electronic and nuclear stopping power. We employ a combination of Fluka simulations and additional numerical computations to evaluate thousands of target configurations. Four different beam energy distributions are considered: two Gaussian distributions with 6~MeV and 10~MeV mean energies, respectively, a Maxwell-Boltzmann distribution and a power law distribution. We explore the production of energy in a range of layer thicknesses motivated by the proton ranges based on ionization losses. The configuration which maximizes the produced energy for each beam type is reported. The production of fusion energy ranges from hundreds to thousands of millijoules for proton bunches of having mean energies between 2-10 MeV
A religião e a formação do cidadão: um estudo sobre a obra Ensino religioso e ensino leigo de Leonel Franca
No full textO objetivo desse trabalho é discutir a importância do Ensino Religioso nas escolas públicas brasileiras a partir da obra Ensino Religioso e Ensino Leigo de Leonel Franca publicada em 1931 com a finalidade de garantir constitucionalmente o retorno do Ensino Religioso nas escolas. Leonel Franca empenhou-se a fim de reinseri-lo nos bancos escolares por acreditar que tal ensino é indispensável à formação moral do cidadão. Sua obra traz elementos acerca da educação moral e de sua interferência no âmbito social. Utiliza pesquisas empíricas e deixa sempre em evidência que as sociedades adeptas ao Ensino Religioso tinham números de criminalidade muito baixos em comparação com as escolas laicizadas, resultado de uma educação integral que auxilia na formação da consciência moral sendo esta uma questão ético-religiosa que repercute na vida social. Desse modo é imprescindível que o aluno encontre respostas a questionamentos que todo o ser humano se faz durante a sua vida, no que se refere a sua finalidade, destino e além-túmulo. Esse trabalho preocupou-se em considerar o contexto ao qual o autor esteve inserido, bem como as principais influências que nortearam o seu trabalhoThe objective of this paper is to discuss the importance of the religious teaching in Brazilian public schools based on the book "Lay Religious Education and Teaching" by Leonel Franca, published in 1931 in order to constitutionally guarantee the return of religious education in schools. Leonel Franca strove to reinsert religious education believing that the religious teaching is indispensable for the moral formation of the citizen. His work brings elements about moral education and it s interference in social scope. It uses empirical research and leaves in evidence showing a society that had religious teachings had a low index of criminal activity compared to the ones which did not. The result of a comprehensive education like this helps in the formation of moral conscience, thus being an ethical-religious question that resonates in social life. Therefore, it is essential for the student to find answers to the questions that every human being asks themselves during their lives pertaining to life s end, our destiny and afterlife. This work was concerned with considering the context in which the author used; and also the main influences that guided his workCoordenação de Aperfeiçoamento de Pessoal de Nível Superio
- …
