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Modernidades: ?anatema o reconciliación?
Marcón,Osvaldo;
Enfoques , 2009,
Abstract: does modernism still exist? moreover, did it exist as a universal phase or just as a reality for some human groups? how are its contradictions expressed to the inside of the various nation-states? to what extent this period contributed to strengthening the subject autonomy? which conceptual category is the most accurate for the current state of affairs? posmodernism, second modernism, demodernism, liquid modernity, or other? and who is the subject of the current technological context? the virtuality of relationships signs for a new kind of individualism which reveals itself on the individual rather than in the communal. this may be, however, an appearance which hides a new social project whose main features are still to be unraveled.
Los conflictos ambientales del gas boliviano
Gavaldá Palacín, Marc
Iconos : Revista de Ciencias Sociales , 2005,
Abstract: Los ajustes neoliberales introducidos en la legislación bolivana han facilitado la apropiación de los recursos hidrocarburíferos por parte de las transnacionales petroleras. Estas compa ías invaden territorios indígenas y áreas protegidas. En su accionar generan graves conflictos ambientales con las comunidades locales. La costrucción de los gasoductos Bolivia-Brasil, Cuiabá y Gasyrg así como la oposición de la población a exportar gas a Estados Unidos nos reflejan cómo la población se organiza para resistir al expolio de las compa ías petroleras. Las movilizaciones populares de La Guerra del gas , en octubre 2003 no han terminado, porque el gas sigue en manos extranjeras.
LA LARGA MARCHA DE LA ACCIóN AMBIENTAL EN LOS CENTROS EDUCATIVOS. UN ESTUDIO DE CASO EN ARAGóN
Carmelo Marcén Albero
PROFESORADO , 2012,
Abstract: La ambientalización curricular de los centros educativos es una tarea compleja. Se apoya en el crecienteinterés por las cuestiones ambientales pero tiene un difícil encaje en la metodología presente, muypreocupada por los contenidos. Aún así, es posible porque existe una cierta práctica profesional para trabajar determinadas cuestiones ambientales. Programar investigaciones para reconocer los rasgos de las actuaciones ambientalizadores presentes es un buen camino para construir a partir de ellas proyectos con nuevas dimensiones. Estas necesitan conocer los contenidos clave en la dinámica ambiental, dise ar los contextos de la intervención y concertar los procesos que se deberían recorrer para lograr una verdadera ambientalización. Ese es el camino que se recorrió en la investigación que aquí se presenta.
Una interpretación numérica de la crónica de Huamán Poma de Ayala
Marcín Mróz
Anthropologica , 1984,
Abstract: Retoma de uno de los temas que ha atraído especial atención de distintos estudiosos siguiendo una línea de análisis iniciada por Juan Ossio en su tesis de 1970. El autor del presente artículo realiza una interpretación numérica de las edades de la humanidad según el gran cronista indio.
La responsabilidad del ni?o que delinque
Marcón, Osvaldo Agustín;
Revista Katálysis , 2008, DOI: 10.1590/S1414-49802008000200009
Abstract: the discussion about how the prosecuted child should respond for criminal acts committed generates two dominant positions. one demands special 'punishments' while the other seeks 'social and psychological responsibilization'. this article discusses both positions in the search for a synthesis that maintains the best elements of each. it thus proposes to guarantee fair trials, restricting the traditional judicial discretion in this field, but simultaneously rejecting the entire system of special punishments as a route for the construction of social and subjective responsibility. the alternative proposed is inserted in the field of restorative justice, in opposition to the systems of juvenile penal responsibility. it defends the notion of 'co-responsibility sanction' to substitute that defined as 'responsibilization sanctions', and of integral 'guaranteeism' instead of the notion of 'penal guaranteeism'.
Penalización juvenil selectiva, prácticas educativas y estados guerreros
Osvaldo Agustín Marcón
POSTData : Revista de Reflexión y Análisis Político , 2011,
Abstract: Cíclicamente resurge el debate referido a cómo intervenir sobre situaciones de jóvenes en torno a los cuales se ha configurado un campo de conflicto penal. Múltiples dimensiones del mismo no son puestas en escena pues se prioriza, corrientemente, la mirada técnico-jurídica. La utilización del castigo o pena tiene fundamentos e implicancias políticas muy diversas. Está relacionada con, entre otras cosas, un modelo de Estado hacia el cual se avanza mediante políticas educativas (no sólo escolares) concordantes. Para ello previamente se caracteriza al mismo como Estado guerrero, aunque no necesariamente bélico en el sentido tradicional. Ejemplo de esto se puede encontrar en la comparación entre atenienses y espartanos o, por otro lado, aztecas y guaraníes. Así, la penalización adquiere ribetes no puestos habitualmente en escena. Cyclically reappears the discussion on how to manage situations of young people around whom a field of criminal conflict has been configurated. Multiple dimensions of it are not staged because usually priority is given to the legal-technical look. The use of punishment or penalty is baseless and has very different political implications. It is related to, inter alia, a given state model through educational policies. This is a warrior state, though not necessarily military in the traditional sense. The comparison between Athens and Sparta and, on the other hand, Aztecs and Guarani Indians can be helpful to illustrate this. Thus, penalty has dimensions not usually put on stage.
How does infliximab work in rheumatoid arthritis?
Ravinder N Maini, Marc Feldmann
Arthritis Research & Therapy , 2002, DOI: 10.1186/ar549
Abstract: Tumor necrosis factor alpha (TNFα) is the name given to a serum factor that was derived in 1975 from endotoxin-treated mice and found to be capable of inducing necrosis of a methylcholanthrene-induced murine sarcoma [1]. The molecular characterization of TNFα in the 1980s revealed that it is identical to cachectin, a previously described serum factor that was found to be responsible for weight loss and fever in experimental animal models [2,3]. The diverse biologic activities of TNFα soon became apparent. Aside from its tumoricidal property, it was recognized that, following injection into animals or humans, TNFα causes signs and symptoms of shock, including multi-organ damage via pro-inflammatory effects on vascular endothelium. The realization that TNFα may play a role in rheumatoid arthritis (RA) followed four demonstrations: firstly, its ability to degrade cartilage and bone in vitro; secondly, its arthritogenic properties in animal models; thirdly, its co-localization with TNF receptors in RA synovium and the pannus-cartilage junction; and fourthly, its pivotal role in regulating the production of interleukin (IL)-1 in cultured RA-derived synovial cells (a mixture of lymphoid cells, macrophages, dendritic cells, B cells, endothelial cells, and fibroblasts) [4,5].Support for the role of TNFα in RA, and hence its promise as a therapeutic target candidate, came from the observation that the clinical signs and tissue damage of collagen-induced arthritis in mice were ameliorated by administration of a monoclonal anti-TNFα antibody [6]. In 1992, 20 patients with active RA despite treatment with disease-modifying antirheumatic drugs were the first to be treated with an anti-TNFα agent, infliximab (Remicade?, Centocor, Inc, Malvern, Pa). In this open-label clinical trial by our group at the Kennedy Institute of Rheumatology Division, the safety and marked anti-inflammatory effect of intravenously administered infliximab was associated with a dramatic reduction in C-rea
Large-Angle Cosmic Microwave Background Anisotropies in an Open Universe
Marc Kamionkowski,David N. Spergel
Physics , 1993, DOI: 10.1086/174543
Abstract: If the Universe is open, scales larger than the curvature scale may be probed by large-angle fluctuations in the cosmic microwave background (CMB). We consider primordial adiabatic perturbations and discuss power spectra that are power laws in volume, wavelength, and eigenvalue of the Laplace operator. The resulting large-angle anisotropies of the CMB are computed. The amplitude generally increases as $\Omega$ is decreased, but decreases as $h$ is increased. Interestingly enough, for all three ansatzes, anisotropies on angular scales larger than the curvature scale are suppressed relative to the anisotropies on scales smaller than the curvature scale. Models with $0.2<\Omega h<0.3$ appear compatible with CMB fluctuations detected by COBE and Tenerife and with the amplitude and spectrum of fluctuations of galaxy counts in galaxy surveys. COBE normalization for these models yields $\sigma_8\simeq 0.5-0.7$. Models with smaller values of $\Omega h$ when normalized to COBE require bias factors in excess of 2 to be compatible with the observed galaxy counts on the $8/h$ Mpc scale. Requiring that the age of the universe exceed 10 Gyr implies that $\Omega>0.25$, while requiring that the age exceed 13 Gyr implies that $\Omega>0.35$. Unlike in the flat-Universe case where the anisotropy comes only from the last-scattering term in the Sachs-Wolfe formula, large-angle anisotropies come primarily from the decay of potential fluctuations at $z<1/\Omega$. Thus, if the Universe is open, COBE has been detecting fluctuations produced at moderate redshift rather than at $z\sim 1300$.
The Rate of the Proton-Proton Reaction
Marc Kamionkowski,John N. Bahcall
Physics , 1993, DOI: 10.1086/173612
Abstract: We re-evaluate the matrix element for the proton-proton reaction which is important for stellar-evolution calculations and for the solar-neutrino problem. We self-consistently determine the effect of vacuum polarization on the matrix element by first correcting the low-energy scattering data to account for vacuum polarization. We then calculate the proton-proton wave function by integrating the Schrodinger equation with vacuum polarization included. We use improved data for proton-proton scattering and for the deuteron wave function. We evaluate the uncertainties that are due to experimental error and estimate those that are due to theoretical inadequacies. We estimate the theoretical uncertainty by using six different deuteron potentials and five different proton-proton potentials. Vacuum polarization decreases the calculated value by $0.6_{-0.4}^{+0.1}$\%. The complete result is $\Lambda^2=6.92\times(1\pm0.002^{+0.014}_{-0.009})$ where the first uncertainty is due to experimental errors and the second uncertainty is due to theoretical uncertainties. Our value of $\Lambda^2$ is 2\% smaller than the value obtained in 1969 by Bahcall and May. The improved calculations of the rate of the $pp$ reaction described here increase slightly the predicted event rates for the chlorine and the Kamiokande solar-neutrino experiments.
Vacuum-Polarization Corrections to Solar-Fusion Rates
Marc Kamionkowski,John N. Bahcall
Physics , 1993, DOI: 10.1103/PhysRevC.49.545
Abstract: The vacuum-polarization corrections to rates for nuclear-fusion reactions in the $pp$ chain and in the CNO cycle are calculated. For the reactions of particular importance to the solar-neutrino problem, the $\Hethree$, $\Hefour$, $\Be$, and $\Ni$ reactions, we find the magnitude of the effect to be less than 2\%. The effect of VP on all the other reaction rates is expected to be of a similar order of magnitude. We discuss how these results affect the predicted fluxes of solar neutrinos.
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