Otras infancias. Entre el niño emblema y el niño abandonable

The article has the purpose of reviewing elements that can be founders to support the research line on Childhood and Family, specific to doctoral research programs in the institution where the authors are enrolled, but which is also at the service of inquiry on the subject at different levels of training in the city and regional context. The methodological approach is made from a hermeneutic perspective with comprehensive reach through a documentary review of classic and contemporary authors, through which a discursive network emerges that contains and supports the research line and the categories it groups. In conclusion, this research work allows theoretical space to other types of childhoods, which have been historically made invisible because they do not fit into the paradigm of childhood as the emblem of the future. We are referring here to children's groups cataloged as non-futurizable, children who can be forsaken/abandoned.   Keywords: history of childhood, Latin America, biopolitics, post-structuralism, other childhoods.El artículo tiene el propósito de revisar elementos que pueden ser fundantes para sustentar la línea de investigación sobre Infancia y Familia, propia de programas de investigación doctoral en la institución donde se inscriben los autores, pero que está también al servicio de la indagación sobre el tema en diferentes niveles de formación en la ciudad y en el contexto regional. El abordaje metodológico se hace desde una perspectiva hermenéutica con alcances comprensivos, mediante una revisión documental de autores clásicos y contemporáneos a través de los cuales emerge un entramado discursivo que contiene y da sustento a la línea en mención y las categorías que agrupa. A manera de conclusión este trabajo le da espacio teórico a otro tipo de infancias, aquellas que han sido históricamente invisibilizadas porque no caben en el paradigma de la niñez en tanto emblema del futuro; nos referimos aquí a los cuerpos infantiles catalogados como no futurizables, niños que pueden ser abandonables.   Palabras clave: historia de la infancia, Latinoamérica, biopolítica, posestructuralismo, otras infancias

Una llamativa nueva especie de Pristimantis (Anura: Terrana: Strabomantidae) de las estribaciones noroccidentales de los Andes de Ecuador

We describe a new species of the diverse genus Pristimantis. The new species is characterized by having a green dorsum with reddish marks, acuminate snout with papilla at tip, conical ulnar and tarsal tubercles, and by lacking cranial crests. The new species inhabits the northwestern Andean slopes of Ecuador.Describimos una nueva especie de rana del diverso género Pristimantis. La nueva especie se caracteriza principalmente por tener una coloración dorsal verde con manchas rojizas, rostro acuminado con papila en la punta, tubérculos cónicos ulnares y tarsales, y por la ausencia de crestas craneales. La especie se distribuye en la vertiente noroccidental de los Andes del Ecuador

Reemplazo del nombre Pristimantis viridis Valencia, Yánez-Muñoz, Betancourt-Yépez, Terán-Valdez y Guayasamin, 2010

Recently, Valencia et al. [1] we described a new species of Pristimantis from the northwestern foothills of Ecuador. However, we made a mistake in using a specific epithet previously occupied for a frog of eastern and western foothills of Antioquia, Colombia [2]. Under Chapter 12, Article 53.3 of the International Code of Zoological Nomenclature ICZN, Pristimantis viridis Valencia, Yánez-Muñoz, Betancourt-Yépez, Terán-Valdezy Guayasamin, 2010 is considered a junior homonym. To solve this problem, and following the provisions of Art. 60.3 of ICZN [3], we propose the name Pristimantis rufoviridis nomen novum replacing Pristimantis viridis Valencia, Yánez-Muñoz, Betancourt-Yépez, Terán-Valdez y Guayasamin. The specific epithet rufoviridis comes from the combination of words in Latin rufus (red, reddish) and viridis (green), and refers to the greenish color with red spots on the back of this frog. The rufoviridis epithet is used as a noun in apposition. Although the color pattern is green in the two species, P viridis has a pale green or “apple green” immaculate without obvious stains [2], as opposed to P rufoviridis which has obvious reddish spots. As P rufoviridis, P viridis has no clear phylogenetic position within the genre Pristimantis [2].Recientemente, Valencia et al. [1] describimos una nueva especie de Pristimantis de las estribaciones noroccidentales de Ecuador. Sin embargo, cometimos un error al utilizar un epíteto específico previamente ocupado para una rana de las estribaciones occidentales y orientales de Antioquia, Colombia [2]. Según el Capítulo 12, Artículo 53.3 del Código Internacional de Nomenclatura Zoológica ICZN, Pristimantis viridis Valencia, Yánez-Muñoz, Betancourt-Yépez, Terán-Valdezy Guayasamin, 2010 es considerado como un homónimo júnior. Para solucionar este problema, y siguiendo lo estipulado en el Art. 60.3 del ICZN [3], proponemos el nombre Pristimantis rufoviridis nomen novum en reemplazo de Pristimantis viridis Valencia, Yánez-Muñoz, Betancourt-Yépez, Terán-Valdez y Guayasamin. El epíteto específico rufoviridis proviene de la combinación de palabras en latín rufus (rojo, rojizo) y viridis (verde), y hace referencia a la coloración verdosa con manchas rojizas del dorso de esta especie de rana. El epíteto rufoviridis es utilizado como sustantivo en aposición. Aunque el patrón de coloración es verde en las dos especies, P viridis presenta una coloración verde pálida o verde “manzana” inmaculado sin manchas evidentes [2], contrario a P rufoviridis el cual tiene evidentes manchas rojizas. Al igual que P rufoviridis, P viridis no tiene una posición filogenètica clara dentro del género Pristimantis [2]

Casos de enseñanza como estrategia pedagógica en programas empresariales

Los estudios de caso se destacan como una metodología de pedagogía activa en la cual los estudiantes, si son orientados de manera adecuada, pueden tener un aprendizaje experiencial y significativo. El objetivo del presente artículo discute la importancia del método de caso como estrategia pedagógica para la formación gerencial e incluye una serie de pautas acerca de cómo escribir el material y como desarrollarlo dentro de un contexto de clase. Por último, se concluye que la casuística es una posibilidad pedagógica para que los estudiantes aprendan y comprendan de mejor forma las enseñanzas gerenciales frente a las tradicionales y dogmáticas que aún persisten en algunas escuelas de negocios

Search for squarks and gluinos in events with isolated leptons, jets and missing transverse momentum at s√=8 TeV with the ATLAS detector

The results of a search for supersymmetry in final states containing at least one isolated lepton (electron or muon), jets and large missing transverse momentum with the ATLAS detector at the Large Hadron Collider are reported. The search is based on proton-proton collision data at a centre-of-mass energy s√=8 TeV collected in 2012, corresponding to an integrated luminosity of 20 fb−1. No significant excess above the Standard Model expectation is observed. Limits are set on supersymmetric particle masses for various supersymmetric models. Depending on the model, the search excludes gluino masses up to 1.32 TeV and squark masses up to 840 GeV. Limits are also set on the parameters of a minimal universal extra dimension model, excluding a compactification radius of 1/R c = 950 GeV for a cut-off scale times radius (ΛR c) of approximately 30

Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at s√=8 TeV with ATLAS

Measurements of fiducial and differential cross sections are presented for Higgs boson production in proton-proton collisions at a centre-of-mass energy of s√=8 TeV. The analysis is performed in the H → γγ decay channel using 20.3 fb−1 of data recorded by the ATLAS experiment at the CERN Large Hadron Collider. The signal is extracted using a fit to the diphoton invariant mass spectrum assuming that the width of the resonance is much smaller than the experimental resolution. The signal yields are corrected for the effects of detector inefficiency and resolution. The pp → H → γγ fiducial cross section is measured to be 43.2 ±9.4(stat.) − 2.9 + 3.2 (syst.) ±1.2(lumi)fb for a Higgs boson of mass 125.4GeV decaying to two isolated photons that have transverse momentum greater than 35% and 25% of the diphoton invariant mass and each with absolute pseudorapidity less than 2.37. Four additional fiducial cross sections and two cross-section limits are presented in phase space regions that test the theoretical modelling of different Higgs boson production mechanisms, or are sensitive to physics beyond the Standard Model. Differential cross sections are also presented, as a function of variables related to the diphoton kinematics and the jet activity produced in the Higgs boson events. The observed spectra are statistically limited but broadly in line with the theoretical expectations

Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector

Results of a search for H → τ τ decays are presented, based on the full set of proton-proton collision data recorded by the ATLAS experiment at the LHC during 2011 and 2012. The data correspond to integrated luminosities of 4.5 fb−1 and 20.3 fb−1 at centre-of-mass energies of √s = 7 TeV and √s = 8 TeV respectively. All combinations of leptonic (τ → `νν¯ with ` = e, µ) and hadronic (τ → hadrons ν) tau decays are considered. An excess of events over the expected background from other Standard Model processes is found with an observed (expected) significance of 4.5 (3.4) standard deviations. This excess provides evidence for the direct coupling of the recently discovered Higgs boson to fermions. The measured signal strength, normalised to the Standard Model expectation, of µ = 1.43 +0.43 −0.37 is consistent with the predicted Yukawa coupling strength in the Standard Model

Measurement of the top pair production cross section in 8 TeV proton-proton collisions using kinematic information in the lepton plus jets final state with ATLAS

A measurement is presented of the $t\bar{t}$ inclusive production cross-section in $pp$ collisions at a center-of-mass energy of $\sqrt{s}=8$ TeV using data collected by the ATLAS detector at the CERN Large Hadron Collider. The measurement was performed in the lepton+jets final state using a data set corresponding to an integrated luminosity of 20.3 fb$^{-1}$. The cross-section was obtained using a likelihood discriminant fit and $b$-jet identification was used to improve the signal-to-background ratio. The inclusive $t\bar{t}$ production cross-section was measured to be $260\pm 1{\textrm{(stat.)}} ^{+22}_{-23} {\textrm{(syst.)}}\pm 8{\textrm{(lumi.)}}\pm 4{\mathrm{(beam)}}$ pb assuming a top-quark mass of 172.5 GeV, in good agreement with the theoretical prediction of $253^{+13}_{-15}$ pb. The $t\bar{t}\to (e,\mu)+{\mathrm{jets}}$ production cross-section in the fiducial region determined by the detector acceptance is also reported.Comment: Published version, 19 pages plus author list (35 pages total), 3 figures, 2 tables, all figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2013-06

Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using √s=8 TeV proton-proton collision data

A search for squarks and gluinos in final states containing high-p T jets, missing transverse momentum and no electrons or muons is presented. The data were recorded in 2012 by the ATLAS experiment in s√=8 TeV proton-proton collisions at the Large Hadron Collider, with a total integrated luminosity of 20.3 fb−1. Results are interpreted in a variety of simplified and specific supersymmetry-breaking models assuming that R-parity is conserved and that the lightest neutralino is the lightest supersymmetric particle. An exclusion limit at the 95% confidence level on the mass of the gluino is set at 1330 GeV for a simplified model incorporating only a gluino and the lightest neutralino. For a simplified model involving the strong production of first- and second-generation squarks, squark masses below 850 GeV (440 GeV) are excluded for a massless lightest neutralino, assuming mass degenerate (single light-flavour) squarks. In mSUGRA/CMSSM models with tan β = 30, A 0 = −2m 0 and μ > 0, squarks and gluinos of equal mass are excluded for masses below 1700 GeV. Additional limits are set for non-universal Higgs mass models with gaugino mediation and for simplified models involving the pair production of gluinos, each decaying to a top squark and a top quark, with the top squark decaying to a charm quark and a neutralino. These limits extend the region of supersymmetric parameter space excluded by previous searches with the ATLAS detector

Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector

The production of a W boson in association with a single charm quark is studied using 4.6 fb−1 of pp collision data at s√ = 7 TeV collected with the ATLAS detector at the Large Hadron Collider. In events in which a W boson decays to an electron or muon, the charm quark is tagged either by its semileptonic decay to a muon or by the presence of a charmed meson. The integrated and differential cross sections as a function of the pseudorapidity of the lepton from the W-boson decay are measured. Results are compared to the predictions of next-to-leading-order QCD calculations obtained from various parton distribution function parameterisations. The ratio of the strange-to-down sea-quark distributions is determined to be 0.96+0.26−0.30 at Q 2 = 1.9 GeV2, which supports the hypothesis of an SU(3)-symmetric composition of the light-quark sea. Additionally, the cross-section ratio σ(W + +c¯¯)/σ(W − + c) is compared to the predictions obtained using parton distribution function parameterisations with different assumptions about the s−s¯¯¯ quark asymmetry