Ética de la investigación con seres humanos en el Perú. Una tarea pendiente más.: Ethics of human research in Peru. Yet another pending task.

We are currently cruising through a second wave of cases during the pandemics of COVID-19 in Peru. Anonymous heroes leave their houses every day and keep offering their work to support their families and communities. After almost a year of the beginning of this Public Health Crisis, much more is being demanded from health and allied professionals. Important efforts leading to improvements on infrastructure and technical guidance for medical innovations have been forced to move forward and be implemented in unprecedented timelines, but their visibility is hindered by another pending task in the Peruvian Health System related to the Ethics of Human Research.Actualmente estamos atravesando una segunda ola de casos durante las pandemias de COVID-19 en Perú. Ya nos acostumbramos a ver héroes anónimos que salen de sus casas todos los días ofrecer su trabajo para apoyar a sus familias y comunidades. Después de casi un año del inicio de esta Crisis de Salud Pública, se está exigiendo mucho más a los profesionales de la salud y afines. Importantes esfuerzos encaminados a mejorar la infraestructura y la orientación técnica de las innovaciones médicas se han visto obligados a avanzar y ser implementados en plazos sin precedentes, pero su visibilidad se ve obstaculizada por otra tarea pendiente en el Sistema de Salud Peruano relacionada con la Ética de la Investigación con Seres Humanos

Monitoreo adecuado y comunicación inequívoca, son la mejor estrategia para proteger a las poblaciones afectadas por derrames de petróleo: Proper testing strategies and unambiguous communication is the best strategy to protect oil-spill affected populations

Dear Editor,Regarding the unfortunate oil spill occurred last January 15th on our coast, I would like to call the attention of your readership towards the need to formulate a proactive Plan of Action to address Environmental Health concerns and use the best practices to communicate risks for people whose livelihoods are closely intertwined with the affected areas.Estimado editor,Con respecto al lamentable derrame de petróleo ocurrido el pasado 15 de enero en nuestro mar y costa peruana, me gustaría comentar sobre la necesidad de formular un Plan de Acción proactivo para abordar las preocupaciones de Salud Ambiental a largo plazo y utilizar las mejores prácticas para comunicar los riesgos a las personas cuyos medios de subsistencia están estrechamente entrelazados con las áreas afectadas

A generalized Chudley-Elliott vibration-jump model in activated atom surface diffusion

Here the authors provide a generalized Chudley-Elliott expression for activated atom surface diffusion which takes into account the coupling between both low-frequency vibrational motion (namely, the frustrated translational modes) and diffusion. This expression is derived within the Gaussian approximation framework for the intermediate scattering function at low coverage. Moreover, inelastic contributions (arising from creation and annihilation processes) to the full width at half maximum of the quasi-elastic peak are also obtained.Comment: (5 pages, 2 figures; revised version

Consideraciones didácticas sobre la enseñanza de lenguas extranjeras asistida por ordenador.

El desarrollo de las nuevas tecnologías en las últimas décadas nos ha impulsado a reflexionar sobre las posibilidades que la tecnología multimedia puede aportar a la enseñanza de la lengua extranjera, con sus ventajas y limitaciones. Partiendo de la evolución de los distintos enfoques en este campo, examinamos algunos programas actuales en CD-ROM y evaluamos sus diferentes actividades y contenidos. También consideramos de qué manera Internet está cambiando la concepción de la enseñanza y el papel del profesor y del alumno

Stochastic theory of lineshape broadening in quasielastic He atom scattering with interacting adsorbates

The activated surface diffusion of interacting adsorbates is described in terms of the so-called interacting single adsorbate approximation, which is applied to the diffusion of Na atoms on Cu(001) for coverages up to 20% in quasielastic He atom scattering experiments. This approximation essentially consists of solving the standard Langevin equation with two noise sources and frictions: a Gaussian white noise accounting for the friction with the substrate, and a white shot noise characterized by a collisional friction simulating the adsorbate-adsorbate collisions. The broadenings undergone by the quasielastic peak are found to be in very good agreement with the experimental data reported at two surface temperatures 200 and 300 K.Comment: 6 pages, 3 figure

Vacuum fluctuations and the conditional homodyne detection of squeezed light

Conditional homodyne detection of quadrature squeezing is compared with standard nonconditional detection. Whereas the latter identifies nonclassicality in a quantitative way, as a reduction of the noise power below the shot noise level, conditional detection makes a qualitative distinction between vacuum state squeezing and squeezed classical noise. Implications of this comparison for the realistic interpretation of vacuum fluctuations (stochastic electrodynamics) are discussed.Comment: 14 pages, 7 figures, to appear in J. Opt. B: Quantum Semiclass. Op

The Agendas 21 of the Cordoba province. The identification of sustainability indicators, their diffusion and their impact on decision making

En la provincia de Córdoba se está consolidando la implantación de Agendas 21 tanto en lo que respecta a las Agendas 21 Locales como a la Agenda 21 Provincial. Una vez superadas las etapas iniciales, en la cuales se sientan las bases del proceso y se desarrolla la planificación estrategia hacia la sostenibilidad, resulta necesario plantear la puesta en valor de los logros alcanzados, sobre todo considerando la explotación de los indicadores de sostenibilidad ya determinadosIn the Cordoba province is consolidating the implenentation of Agenda 21 as in regard to Local Agenda 21 as to the Provincial. Once you get past the initial stages, in which the foundations of the process and develop the planning strategy towards sustainability, it is necessary to consider the enhancement of the achievements, above all considering the use of sustainability indicators already certainPeer Reviewe

Mechanisms for AAA and QoS Interaction

Proceedings of Third IEEE Workshop on Applications and Services in Wireless Networks, ASWN 2003. Bern, Switzerland, July 2-4, 2003.The interaction between Authentication, Authorization and Accounting (AAA) systems and the Quality of Service (QoS) infrastructure is to become a must in the near future. This interaction will allow rich control and management of both users and networks. DIAMETER and DiffServ are likely to turn into the future standards in AAA and QoS systems, but they are not designed to interact with each other. To face this, we propose a new Diameter-Diffserv interaction model and describe the Application Specific Module (ASM) implemented to allow this interaction. The ASM has been implemented and tested in a complete AAA-QoS IPv6 scenario

Frequency and phase synchronization of two coupled neurons with channel noise

We study the frequency and phase synchronization in two coupled identical and nonidentical neurons with channel noise. The occupation number method is used to model the neurons in the context of stochastic Hodgkin-Huxley model in which the strength of of channel noise is represented by ion channel cluster size of the initiation region of neuron. It is shown that frequency synchronization only was achieved at arbitrary value of couple strength as long as two neurons' channel cluster sizes are the same. We also show that the relative phase of neurons can display profuse dynamic behavior under the combined action of coupling and channel noise. Both qualitative and quantitative descriptions are applied to describe the transitions between those behaviors. Relevance of our findings to controlling neural synchronization experimentally is discussed.Comment: 8 pages, 10 figure