Mediaciones tecnológicas: el entramado invisible del ciberespacio

Las nuevas tecnologías de la información y la comunicación (NTIC) abren un panorama más abarcador para el desarrollo social de los individuos, desde diferentes ámbitos sociales: educación, seguridad, economía, trabajo, esparcimiento, entre otros. Vivimos en una sociedad interconectada, traspasando barreras de tiempo y espacio; conviviendo entre certezas e incertidumbres, inmersos en un proceso de aceleración histórica, que tiene como elemento estable justa-mente “el cambio”. Hallamos nuevas maneras de conducta de las personas, nuevos modelos sociales y las tecnologías sustituyen a otras formas de intercambio tecnológico y social. Por ello es necesario conocer el papel que tiene la comunicación tecnológica en procesos de ajuste al cambio social y para ello se plantean los mecanismos de mediación que suceden en la sociedad y que determinan la capacidad de producción y reproducción de los sistemas sociales. En tiempos de Internet, de una cibercultura con ventajas y des-ventajas, ubicuidad, rapidez, simultaneidad, información producida al infinito y posibilidades de encontrar ilícitos también; planteamos una mediación tecnológica, como elemento para amalgamar estos temas, a la luz de los nuevos paradigmas sociales.The new information and communication technologies (ICT) open a wider range of possibilities for the social development of individuals from different social contexts: education, security, economy, work, leisure, among others. We live in an interconnected society, going beyond time and space boundaries; coexisting among certainties and uncertain-ties, and involved in a process of historical acceleration which has “change” as stable element. We find new behaviours in people, new social models, and technologies replace other ways of technological and social exchange. This is why it is necessary to know the role of technological communication in processes of adjustment to social change. We present the mediation mechanisms that take place in society and determine the production and reproduction capacity of the social systems. In times of the Internet, of a cyber-culture with advantages and disadvantages, ubiquity, speed, simultaneousness, information produced to the infinite and possibilities of finding illegalities as well; we pose a technological mediation, as an element to mix these topics, in light of the new social paradigms

Self-consistent description of nuclear photoabsorption cross sections

Several approaches to photonuclear reactions, based on the time-dependent density-functional theory, have been developed recently. The standard linearization leads to the random-phase approximation (RPA) or the quasiparticle-random-phase approximation (QRPA). We have developed a parallelized QRPA computer program for axially deformed nuclei. We also present a feasible approach to the (Q)RPA calculation, that is the finite amplitude method (FAM). We show results of photoabsorption cross sections for deformed nuclei using the QRPA and FAM calculations. Finally, the canonical-basis approach to the time-dependent Hartree-Fock-Bogoliubov method is presented, to demonstrate its feasibility and usefulness.Comment: 10 pages, 4 figures, Presented at Zakopane Conference of Nuclear Physics 201

Quantum calculation of vortices in the inner crust of neutron stars

We study, within a quantum mechanical framework based on self-consistent mean field theory, the interaction between a vortex and a nucleus immersed in a sea of free neutrons, a scenario representative of the inner crust of neutron stars. Quantal finite size effects force the vortex core outside the nucleus, influencing vortex pinning in an important way