Fortaleciendo los procesos de escritura de las letras d y b a partir de estrategias cognitivas para un aprendizaje significativo en los estudiantes del grado primero de la instituci?n educativa Jorge Eli?cer Gait?n

91 p. Recurso Electr?nicoel presente documento es el resultado del trabajo de investigaci?n formativa desarrollado en la I.E Jorge Eliecer Gait?n de la ciudad de Ibagu? dentro del grado primero de primaria a trav?s de un proceso de investigaci?n formativa y empleado la metodolog?a cualitativa de corte etnogr?fico as? como la investigaci?n- acci?n; centrado en la importancia de la implementaci?n de estrategias cognitivas como medio para fortalecer los procesos de escritura de las letras d y b para un aprendizaje significativo en el estudiante. Dentro del proyecto se incluyen una serie de propuestas basadas en fundamentos te?ricos que aportan al desarrollo integral, pedag?gico y metodol?gico en el aula a trav?s de diversas actividades y abarcando espec?ficamente la multiplicidad de las t?cnicas propias de la psicomotricidad fina y gruesa, discriminaci?n visual, percepci?n, entre otras. Lo trazado pone en evidencia no solamente la realidad del contexto socio educativo donde se realiz? el proceso de investigaci?n sino tambi?n las distintas t?cnicas e instrumentos de recolecci?n de datos e informaci?n como la observaci?n, la entrevista, diarios de campo, revisiones documentales pertenecientes a la investigaci?n cualitativa, aplicados a docentes, padres y estudiantes, y los objetivos enfocados en cada uno de los actores objeto de estudio; que a su vez orientaron la acci?n formativa desarrollada con la comunidad educativa vinculada al proceso, y quienes a trav?s de un trabajo mancomunado participaron y aportaron para consolidarla. Con la puesta en marcha de esta investigaci?n, se espera contribuir al fortalecimiento de los procesos de escritura de las letras b y d en primero de primaria y facilitar la creaci?n de estrategias eficaces por parte del docente. Palabras claves: procesos de escritura, cognitivas, investigaci?n.This present documet is result of formative research work developed at the institution educative Jorge Eliecer Gait?n from Ibagu? city into the first primary grade through of a process formative research and using the qualitative methodology of ethnographic cut, like research - action; centered in the importance of the implemetation of cognitive strategies as a means to strengthen processes writing of the letters d and b for a significant learning in the student. In this project are included a serie of proposals based in teoric fundamentals that provide at integral development, pedagogical and methodological in classroom across of different activities and covering multiplicity of tecnics own of thin and thick psychomotor, visual discrimination , perception, among other techniques. the exposed not only evidence the reality of the the social and educational context where he was held the research process but also the different techniques and tools for data collection and information as the observation was made context, interviews, field notes, documentary belonging to research qualitative, applied to teachers, parents and students, and objectives focused on each of the actors under study which in turn they guided the formative action developed with the educational community linked to the process, and they participated and contributed to consolidate. With the startup of this research it is expected to contribute to strengthening the process of writing the letters b and d in first grade and facilitate the creation of effective strategies by the teacher. Keywords: writing processes, cognitive, research

Evaluaci?n de los patrones fenol?gicos floraci?n, fructificaci?n y su relaci?n con los par?metros meteorol?gicos precipitaci?n y temperatura, para dos bosques ubicados en dos jardines bot?nicos en la ciudad de Ibagu?

163 p. Recurso Electr?nicoSe pretendi? evaluar el comportamiento de algunos patrones fenol?gicos, en este caso floraci?n y fructificaci?n de dos Jardines Bot?nicos de la ciudad de Ibagu? y su relaci?n con los factores meteorol?gicos temperatura y precipitaci?n. Dichos sitios corresponden al ecosistema de bosque subandino; para ello se utiliz? la metodolog?a de transectos fenol?gicos, para lo cual se realizaron observaciones quincenales y se georeferenciaron los ?rboles con GPS teniendo como referencia caminos previamente establecidos. En la parte de la floraci?n s?lo se tuvo en cuenta qu? individuos ten?an presencia de flores y en qu? ?poca, de la misma manera se colectaron muestras bot?nicas las cuales fueron procesadas en el laboratorio de Dendrolog?a de la Facultad de Ingenier?a Forestal de la Universidad del Tolima, enriqueciendo la colecci?n de dicho lugar; algunos frutos se pesaron y se secaron, tambi?n se hizo el respectivo tratamiento para su conservaci?n. Se obtuvieron datos que ayudaron a establecer un patr?n de comportamiento fenol?gico en los dos lugares del estudio y de la misma manera se ampli? la informaci?n existente en este campo para la zona, realizando los respectivos an?lisis estad?sticos que permitieron establecer la relaci?n entre los diferentes patrones encontrados; todo esto entre los meses de octubre de 2012 a septiembre de 2013 a lo largo de transectos ya demarcados en los sitios en una longitud de 3550 m en el jard?n bot?nico san Jorge y 1500 m en el jard?n bot?nico Alejandro von Humboldt. Palabras claves: Patrones fenol?gicos, precipitaci?n, temperatura, fructificaci?n, floraci?n.It aimed to assess the behavior of some phenological patterns, in this case flowering and fruiting of two botanical gardens in the city of Ibague and their relationship with meteorological factors temperature and precipitation. These sites correspond to the ecosystem of sub-Andean forest, phenological transects was the methodology used, for which, biweekly observations were made and trees were located with GPS with reference to previously established roads. On flowering only took into account that individuals had the presence of flowers and what time, just as botanical specimens were collected and processed in Dendrology lab of the Forest Engineering Faculty in Universidad del Tolima enriching the collection of that place; some fruit were weighed and dried, the respective treatment to preserve is also made. Obtained data helped to establish a behavioral phenology pattern in the two study sites were obtained and in the same way the existing information in this field was extended to the area, performing the respective statistical analysis allowed to establish the relationship between different patterns found; all this since October 2012 to September 2013 along demarcated transects in the sites along 3550 m in the St. George Botanical Garden and 1500 m in Alexander von Humboldt Botanical Garden. Key words: Phenological patterns, rainfall, temperature, fruiting, flowering

Search for Low-Mass Quark-Antiquark Resonances Produced in Association with a Photon at s =13 TeV

A search for narrow low-mass resonances decaying to quark-antiquark pairs is presented. The search is based on proton-proton collision events collected at 13 TeV by the CMS detector at the CERN LHC. The data sample corresponds to an integrated luminosity of 35.9 fb-1, recorded in 2016. The search considers the case where the resonance has high transverse momentum due to initial-state radiation of a hard photon. To study this process, the decay products of the resonance are reconstructed as a single large-radius jet with two-pronged substructure. The signal would be identified as a localized excess in the jet invariant mass spectrum. No evidence for such a resonance is observed in the mass range 10 to 125 GeV. Upper limits at the 95% confidence level are set on the coupling strength of resonances decaying to quark pairs. The results obtained with this photon trigger strategy provide the first direct constraints on quark-antiquark resonance masses below 50 GeV obtained at a hadron collider

Search for the standard model Higgs boson in the H to ZZ to 2l 2nu channel in pp collisions at sqrt(s) = 7 TeV

A search for the standard model Higgs boson in the H to ZZ to 2l 2nu decay channel, where l = e or mu, in pp collisions at a center-of-mass energy of 7 TeV is presented. The data were collected at the LHC, with the CMS detector, and correspond to an integrated luminosity of 4.6 inverse femtobarns. No significant excess is observed above the background expectation, and upper limits are set on the Higgs boson production cross section. The presence of the standard model Higgs boson with a mass in the 270-440 GeV range is excluded at 95% confidence level.Comment: Submitted to JHE

Azimuthal anisotropy of charged particles at high transverse momenta in PbPb collisions at sqrt(s[NN]) = 2.76 TeV

The azimuthal anisotropy of charged particles in PbPb collisions at nucleon-nucleon center-of-mass energy of 2.76 TeV is measured with the CMS detector at the LHC over an extended transverse momentum (pt) range up to approximately 60 GeV. The data cover both the low-pt region associated with hydrodynamic flow phenomena and the high-pt region where the anisotropies may reflect the path-length dependence of parton energy loss in the created medium. The anisotropy parameter (v2) of the particles is extracted by correlating charged tracks with respect to the event-plane reconstructed by using the energy deposited in forward-angle calorimeters. For the six bins of collision centrality studied, spanning the range of 0-60% most-central events, the observed v2 values are found to first increase with pt, reaching a maximum around pt = 3 GeV, and then to gradually decrease to almost zero, with the decline persisting up to at least pt = 40 GeV over the full centrality range measured.Comment: Replaced with published version. Added journal reference and DO

Constraints on the χ_(c1) versus χ_(c2) polarizations in proton-proton collisions at √s = 8 TeV

The polarizations of promptly produced χ_(c1) and χ_(c2) mesons are studied using data collected by the CMS experiment at the LHC, in proton-proton collisions at √s=8  TeV. The χ_c states are reconstructed via their radiative decays χ_c → J/ψγ, with the photons being measured through conversions to e⁺e⁻, which allows the two states to be well resolved. The polarizations are measured in the helicity frame, through the analysis of the χ_(c2) to χ_(c1) yield ratio as a function of the polar or azimuthal angle of the positive muon emitted in the J/ψ → μ⁺μ⁻ decay, in three bins of J/ψ transverse momentum. While no differences are seen between the two states in terms of azimuthal decay angle distributions, they are observed to have significantly different polar anisotropies. The measurement favors a scenario where at least one of the two states is strongly polarized along the helicity quantization axis, in agreement with nonrelativistic quantum chromodynamics predictions. This is the first measurement of significantly polarized quarkonia produced at high transverse momentum

Compressed representation of a partially defined integer function over multiple arguments

In OLAP (OnLine Analitical Processing) data are analysed in an n-dimensional cube. The cube may be represented as a partially defined function over n arguments. Considering that often the function is not defined everywhere, we ask: is there a known way of representing the function or the points in which it is defined, in a more compact manner than the trivial one

Measurement of the t t-bar production cross section in the dilepton channel in pp collisions at sqrt(s) = 7 TeV

The t t-bar production cross section (sigma[t t-bar]) is measured in proton-proton collisions at sqrt(s) = 7 TeV in data collected by the CMS experiment, corresponding to an integrated luminosity of 2.3 inverse femtobarns. The measurement is performed in events with two leptons (electrons or muons) in the final state, at least two jets identified as jets originating from b quarks, and the presence of an imbalance in transverse momentum. The measured value of sigma[t t-bar] for a top-quark mass of 172.5 GeV is 161.9 +/- 2.5 (stat.) +5.1/-5.0 (syst.) +/- 3.6(lumi.) pb, consistent with the prediction of the standard model.Comment: Replaced with published version. Included journal reference and DO