Uso pedag?gico del celular en el aula

144 P?ginasRecurso Electr?nicoUso pedag?gico del celular en el aula es un estudio cuyo prop?sito fue estimar la tenencia de tel?fonos celulares por parte de estudiantes y profesores de la Instituci?n Educativa T?cnica Francisco Manzanera Henr?quez de la ciudad de Girardot, as? como caracterizar sus procesos de interacci?n social y de interactividad con la informaci?n. Para ello, se seleccion? una muestra al azar con 47.83% del total de estudiantes y 37.5% del total de profesores a quienes se les aplic? una encuesta para recuperar informaci?n sobre tales aspectos. Los hallazgos muestran que 64.7% de los estudiantes y 72.2% de los profesores cuentan con un tel?fono celular del tipo smartphone. Respecto a la interacci?n social, los estudiantes se?alaron las actividades para llegar a acuerdos, para organizar tareas y para aclarar aspectos escolares como las principales; mientras que los profesores utilizan dicho dispositivo para comunicarse con colegas o para acordar actividades con los estudiantes. Respecto a la interactividad con informaci?n, tanto estudiantes como profesores se?alaron la b?squeda y recuperaci?n como las principales actividades escolares realizadas desde su tel?fono celular. Se vislumbra un escenario id?neo para propiciar eventos de ense?anza-aprendizaje con mediaci?n de tales dispositivos. Sin embargo, es necesario ampliar las investigaciones para orientar la mediaci?n de estos dispositivos en el proceso educativo.ABSTRACT Pedagogical use of the phone in the classroom is a study whose purpose was to estimate the holding cell phones by students and teachers of the Instituci?n Eductaiva T?cnica Francisco Manzanera Henriquez of the Girardot city, as well as characterize the processes of social interaction and interaction with the information. For this, To do this, a random sample with 47.83% of students and 37.5% of teachers who were given a survey to retrieve information about such aspects were selected. The findings show that 64.7% of students and 72.2% of teachers have a cell phone type smartphone. Regarding social interaction, students signalized to reach agreements, organizing tasks and to clarify issues such as school principal while teachers use the device to communicate with colleagues or to arrange activities with students. Regarding the interaction with information, students and teachers showed that the search and retrieval as the main school activities from your cell phone. An ideal scenario is envisioned to promote teaching and learning events mediated by such devices. However, additional research is needed to guide the mediation of these devices in the educational process.INTRODUCCI?N 14 1. PLANTEAMIENTO DEL PROBLEMA 16 1.1 DESCRIPCI?N DEL PROBLEMA 16 1.1.1 Primera Generaci?n 16 1.1.2 Segunda Generaci?n 16 1.1.3 Tercera Generaci?n 16 1.1.4 Cuarta Generaci?n 16 2. ANTECEDENTES 20 2.1 ANTECEDENTES NACIONALES 20 2.1.1 Antecedentes Internacionales 22 2.2 PREGUNTA DE INVESTIGACI?N 23 3. OBJETIVOS 24 3.1 OBJETIVO GENERAL 24 3.2 OBJETIVOS ESPEC?FICOS 24 4. JUSTIFICACI?N 25 5. MARCO DE REFERENCIA 27 5.1 MARCO NORMATIVO O LEGAL 27 5.1.1 Telecomunicaciones en Colombia 27 5.1.1.1 Derechos de Autor 28 5.1.1.2 Protecci?n a la Propiedad Intelectual 28 5.1.1.3 Normatividad. 28 6 P?g. 6. MARCO TE?RICO 44 6.1 TECNOLOG?A MOTIVADORA 44 6.2 EL ESTUDIANTE ACTUAL EN LA NUEVA SOCIEDAD DE LA TECNOLOG?A. 48 6.3 RECONSIDERACIONES DE M?TODOS Y CONTENIDOS 50 6.3.1 Las Metodolog?as 52 6.3.2 Los Contenidos Curriculares 52 6.4 MARCO INSTITUCIONAL. 59 6.4.1 Identificaci?n del Plantel 59 6.4.2 Misi?n Institucional 61 6.4.3 Visi?n Institucional. 62 6.4.3.1 Perfil del Estudiante 62 6.4.3.2 Perfil del Docente. 63 7. METODOLOG?A 63 7.1 DISE?O METODOL?GICO DE LA INVESTIGACI?N 63 7.2 DESCRIPCI?N DE LA POBLACI?N 63 7.3 T?CNICAS E INSTRUMENTOS PARA REALIZAR EL SEGUIMIENTO 66 7.3.1 Enfoque Cualitativo de la Investigaci?n 66 7.3.2 T?cnica Cualitativa para el An?lisis del Discurso 70 7.4 PROCESO DE LA INVESTIGACI?N 73 7.5 UNIDAD DE AN?LISIS 75 7.6 UNIDAD DE TRABAJO 76 7.6.1 Caracterizaci?n de la Unidad de Trabajo 76 7.6.1.1 Fuentes de la Informaci?n 76 8. AN?LISIS DE LA INFORMACI?N 77 8.1 CARACTER?STICAS GENERALES DE LOS PARTICIPANTES 77 8.2 TENENCIA Y USO DE SMARTPHONES 79 7 P?g. 8.3 AN?LISIS POR GRADOS 81 8.3.1 Grados S?ptimos 93 8.3.2 Grados Octavos 98 8.3.3 Grados Novenos 103 8.3.3.1 Mayor Utilizaci?n del Potencial Intelectual 106 8.3.3.2 Motivaci?n Intr?nseca 106 8.3.4 Grados Decimos 108 8.3.5 Grados Onces 115 8.3.5.1 Ventajas del M-Learning 119 8.4 DOCENTES 121 8.5 HALLAZGOS 126 9. CONCLUSIONES 128 RECOMENDACIONES 130 REFERENCIAS 132 ANEXOS 13

Thin-disk laser pump schemes for large number of passes and moderate pump source quality

Novel thin-disk laser pump layouts are proposed yielding an increased number of passes for a given pump module size and pump source quality. These novel layouts result from a general scheme which bases on merging two simpler pump optics arrangements. Some peculiar examples can be realized by adapting standard commercially available pump optics simply by intro ducing an additional mirror-pair. More pump passes yield better efficiency, opening the way for usage of active materials with low absorption. In a standard multi-pass pump design, scaling of the number of beam passes brings ab out an increase of the overall size of the optical arrangement or an increase of the pump source quality requirements. Such increases are minimized in our scheme, making them eligible for industrial applicationsComment: 16 pages, 9 figure

Compact 20-pass thin-disk amplifier insensitive to thermal lensing

We present a multi-pass amplifier which passively compensates for distortions of the spherical phase front occurring in the active medium. The design is based on the Fourier transform propagation which makes the output beam parameters insensitive to variation of thermal lens effects in the active medium. The realized system allows for 20 reflections on the active medium and delivers a small signal gain of 30 with M$^2$ = 1.16. Its novel geometry combining Fourier transform propagations with 4f-imaging stages as well as a compact array of adjustable mirrors allows for a layout with a footprint of 400 mm x 1000 mm.Comment: 7 pages, 6 figure

Deconstructing the Subject Condition in terms of cumulative constraint violation

Chomsky (1973) attributes the island status of nominal subjects to the Subject Condition, a constraint specific to subjects. English and Spanish are interesting languages for the comparative study of extraction from subjects, because subjects in English are predominantly preverbal, whereas in Spanish they can be either preverbal or postverbal. In this paper we argue that the islandhood of subject DPs in both English and Spanish is not categorical. The degradation associated with extraction from subjects must be attributed to the interplay of a range of more general constraints which are not specific to subjects. We argue that the interaction of these constraints has a cumulative effect whereby the more constraints that are violated, the higher the degree of degradation that results. We also argue that some speakers have a greater tolerance for constraint violations than others, which would account for widespread inter-speaker judgment variability

Numerical simulation of dark lanes in post-flare supra-arcade

We integrate the MHD ideal equations to simulate dark void sunwardly moving structures in post--flare supra--arcades. We study the onset and evolution of the internal plasma instability to compare with observations and to gain insight into physical processes and characteristic parameters of these phenomena. The numerical approach uses a finite-volume Harten-Yee TVD scheme to integrate the 1D1/2 MHD equations specially designed to capture supersonic flow discontinuities. The integration is performed in both directions, the sunward radial one and the transverse to the magnetic field. For the first time, we numerically reproduce observational dark voids described in Verwichte et al. (2005). We show that the dark tracks are plasma vacuums generated by the bouncing and interfering of shocks and expansion waves, upstream an initial slow magnetoacoustic shock produced by a localized deposition of energy modeled with a pressure perturbation. The same pressure perturbation produces a transverse to the field or perpendicular magnetic shock giving rise to nonlinear waves that compose the kink--like plasma void structures, with the same functional sunward decreasing phase speed and constancy with height of the period, as those determined by the observations.Comment: Accepted MNRAS, 6 pages, 7 figure

Drug and xenobiotic biotransformation in the blood–brain barrier: a neglected issue

Drug biotransformation is a crucial mechanism for facilitating the elimination of chemicals from the organism and for decreasing their pharmacological activity. Published evidence suggests that brain drug metabolism may play a role in the development of adverse drug reactions and in the clinical response to drugs and xenobiotics. The blood–brain barrier (BBB) has been regarded mainly as a physical barrier for drugs and xenobiotics, and little attention has been paid to the BBB as a drug-metabolizing barrier. The presence of drug-metabolizing enzymes in the BBB is likely to have functional implications because local metabolism may inactivate drugs or may modify the drug’s ability to cross the BBB, thus modifying drug response and the risk of developing adverse drug reactions. In this perspective paper, we discuss the expression of relevant xenobiotic metabolizing enzymes in the brain and in the BBB, and we cover current advances and future directions on the potential role of these BBB drug-metabolizing enzymes as modifiers of drug response

El arte una estrategia para descubrir el mundo interior del ni?o

388 p. Recurso Electr?nicoLa investigaci?n realizada ?El arte una estrategia para descubrir el mundo interior del ni?o?, tuvo como prop?sito la transformaci?n de las pr?cticas que circulan en las aulas, generando procesos significativos en los ni?os de 4 a 5 a?os. En la investigaci?n se expuso la est?tica y la art?stica, como uno de los medios que lleva al estudiante a pensar, a crear, a expresarse espont?neamente, percibir, pensar, expresar sus inquietudes y dar puntos de vista sobre lo que ve y lo que piensa. La investigaci?n fue posible por medio de la intervenci?n de tres n?cleos denominados la pintura, el paisaje y la escena, cada uno de estos con subactividades, que permitieron aflorar sentimientos en los ni?os, los cuales se hac?an evidentes en el placer que demostraban al ejecutarlas y al observar sus rostros de asombro frente a las creaciones y producciones realizadas por ellos mismos los cuales formulaban preguntas encaminadas al enriquecimiento de su imaginaci?n, curiosidad y creatividad. Esta propuesta fue realizada teniendo en cuenta la metodolog?a investigaci?n- acci?n- participaci?n de corte etnogr?fico, la cual, promueve y facilita la generaci?n de impacto, la transformaci?n de realidades inmediatas y la resoluci?n de problemas cotidianos teniendo en cuenta la participaci?n activa, la reflexi?n y la construcci?n colectiva de saberes.The investigation is called "The art as a strategy to discover the inner world of the child" which aims the transformation of the practices that circulate in classrooms generating significant processes in children 4-5 years old. In this research the aesthetic and artistic as one of the means that leads the student to think, to create, to express themselves spontaneously, perceive, think, express their concerns and give views on what he sees is exposed and what you think. The research was made possible through the intervention of three cores called the painting, the landscape and the scene with each of these sub-activities, which allowed out feelings in children, which were evident pleasure in showing to execute and observe their faces with astonishment at the creations and productions by themselves which formulated questions designed to enrich their imagination, curiosity and creativity. This proposal was made according the research-action-participation methodology ethnographic, which promotes and facilitates the generation of the impact, the transformation of immediate realities and solving everyday problems taking into account the active participation, reflection and the collective construction of knowledge. Keywords: research, aesthetic, artistic, thinking, painting, scene, scenery, imagination, creativity, action, participation

Enhanced frequency up-conversion in Rb vapor

We demonstrate highly efficient generation of coherent 420nm light via up-conversion of near-infrared lasers in a hot rubidium vapor cell. By optimizing pump polarizations and frequencies we achieve a single-pass conversion efficiency of 260% per Watt, significantly higher than in previous experiments. A full exploration of the coherent light generation and fluorescence as a function of both pump frequencies reveals that coherent blue light is generated close to 85Rb two-photon resonances, as predicted by theory, but at high vapor pressure is suppressed in spectral regions that do not support phase matching or exhibit single-photon Kerr refraction. Favorable scaling of our current 1mW blue beam power with additional pump power is predicted.Comment: 6 pages, 4 figures. Modified to include referees' improvement

Bloch oscillations of ultracold atoms: a tool for a metrological determination of h/mRbh/m_{Rb}

We use Bloch oscillations in a horizontal moving standing wave to transfer a large number of photon recoils to atoms with a high efficiency (99.5% per cycle). By measuring the photon recoil of $^{87}Rb$, using velocity selective Raman transitions to select a subrecoil velocity class and to measure the final accelerated velocity class, we have determined $h/m_{Rb}$ with a relative precision of 0.4 ppm. To exploit the high momentum transfer efficiency of our method, we are developing a vertical standing wave set-up. This will allow us to measure $h/m_{Rb}$ better than $10^{-8}$ and hence the fine structure constant $\alpha$ with an uncertainty close to the most accurate value coming from the ($g-2$) determination