Planificación del sistema integrado de gestión para el sector secundario (construcción) empresa de obras civiles

Se presenta el desarrollo de la implementación del sistema integrado de gestión de una empresa del sector secundario (construcción) dedicado a obras civiles. En la Parte Administrativa cuenta con un sistema de iluminación tanto natural como artificial en buenas condiciones, manteniendo una temperatura y humedad ambiente normal para las personas que se encuentran dentro de las instalaciones, el nivel sonoro en la oficina es de un nivel bajo, las instalaciones eléctricas se encuentran técnicamente distribuidas y en buenas condiciones de seguridad. La ubicación del personal operativo depende en términos generales de las zonas de trabajo de los clientes donde se presta el servicio; estos sitios cuentan con puestos de trabajos adecuados para el cumplimiento seguro de las actividades de su trabajo.The development of the planning of the integrated management system for a company in the secondary sector (construction) dedicated to civil works is presented. In the Administrative Part it has a lighting system both natural and artificial in good condition, maintaining a normal room temperature and humidity for people that are inside the facilities, the noise level in the office is of a low standard, the electrical installations are are technically distributed and in good working order. security. The location of the operational staff depends in terms general of the work areas of the clients where the service is provided service; these sites have suitable jobs for the safe performance of their work activities

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Combined searches for the production of supersymmetric top quark partners in proton-proton collisions at root s=13 TeV

A combination of searches for top squark pair production using proton-proton collision data at a center-of-mass energy of 13 TeV at the CERN LHC, corresponding to an integrated luminosity of 137 fb(-1) collected by the CMS experiment, is presented. Signatures with at least 2 jets and large missing transverse momentum are categorized into events with 0, 1, or 2 leptons. New results for regions of parameter space where the kinematical properties of top squark pair production and top quark pair production are very similar are presented. Depending on themodel, the combined result excludes a top squarkmass up to 1325 GeV for amassless neutralino, and a neutralinomass up to 700 GeV for a top squarkmass of 1150 GeV. Top squarks with masses from 145 to 295 GeV, for neutralino masses from 0 to 100 GeV, with a mass difference between the top squark and the neutralino in a window of 30 GeV around the mass of the top quark, are excluded for the first time with CMS data. The results of theses searches are also interpreted in an alternative signal model of dark matter production via a spin-0 mediator in association with a top quark pair. Upper limits are set on the cross section for mediator particle masses of up to 420 GeV

Observation of tW production in the single-lepton channel in pp collisions at root s=13 TeV

A measurement of the cross section of the associated production of a single top quark and a W boson in final states with a muon or electron and jets in proton-proton collisions at root s = 13 TeV is presented. The data correspond to an integrated luminosity of 36 fb(-1) collected with the CMS detector at the CERN LHC in 2016. A boosted decision tree is used to separate the tW signal from the dominant t (t) over bar background, whilst the subleading W+jets and multijet backgrounds are constrained using data-based estimates. This result is the first observation of the tW process in final states containing a muon or electron and jets, with a significance exceeding 5 standard deviations. The cross section is determined to be 89 +/- 4 (stat) +/- 12 (syst) pb, consistent with the standard model.Peer reviewe

Measurement of the top quark mass using events with a single reconstructed top quark in pp collisions at root s=13 TeV

Abstract:A measurement of the top quark mass is performed using a data sample en-riched with single top quark events produced in thetchannel. The study is based on proton-proton collision data, corresponding to an integrated luminosity of 35.9 fb−1, recorded at√s= 13TeV by the CMS experiment at the LHC in 2016. Candidate events are selectedby requiring an isolated high-momentum lepton (muon or electron) and exactly two jets,of which one is identified as originating from a bottom quark. Multivariate discriminantsare designed to separate the signal from the background. Optimized thresholds are placedon the discriminant outputs to obtain an event sample with high signal purity. The topquark mass is found to be172.13+0.76−0.77GeV, where the uncertainty includes both the sta-tistical and systematic components, reaching sub-GeV precision for the first time in thisevent topology. The masses of the top quark and antiquark are also determined separatelyusing the lepton charge in the final state, from which the mass ratio and difference aredetermined to be0.9952+0.0079−0.0104and0.83+1.79−1.35GeV, respectively. The results are consistentwithCPTinvariance

Measurements of Higgs boson production cross sections and couplings in the diphoton decay channel at root s=13 TeV

Measurements of Higgs boson production cross sections and couplings in events where the Higgs boson decays into a pair of photons are reported. Events are selected from a sample of proton-proton collisions at root s = 13TeV collected by the CMS detector at the LHC from 2016 to 2018, corresponding to an integrated luminosity of 137 fb(-1). Analysis categories enriched in Higgs boson events produced via gluon fusion, vector boson fusion, vector boson associated production, and production associated with top quarks are constructed. The total Higgs boson signal strength, relative to the standard model (SM) prediction, is measured to be 1.12 +/- 0.09. Other properties of the Higgs boson are measured, including SM signal strength modifiers, production cross sections, and its couplings to other particles. These include the most precise measurements of gluon fusion and vector boson fusion Higgs boson production in several different kinematic regions, the first measurement of Higgs boson production in association with a top quark pair in five regions of the Higgs boson transverse momentum, and an upper limit on the rate of Higgs boson production in association with a single top quark. All results are found to be in agreement with the SM expectations.Peer reviewe

Measurements of the Electroweak Diboson Production Cross Sections in Proton-Proton Collisions at root s=5.02 TeV Using Leptonic Decays

The first measurements of diboson production cross sections in proton-proton interactions at a center-of-mass energy of 5.02 TeV are reported. They are based on data collected with the CMS detector at the LHC, corresponding to an integrated luminosity of 302 pb(-1). Events with two, three, or four charged light leptons (electrons or muons) in the final state are analyzed. The WW, WZ, and ZZ total cross sections are measured as sigma(WW) = 37:0(-5.2)(+5.5) (stat)(-2.6)(+2.7) (syst) pb, sigma(WZ) = 6.4(-2.1)(+2.5) (stat)(-0.3)(+0.5)(syst) pb, and sigma(ZZ) = 5.3(-2.1)(+2.5)(stat)(-0.4)(+0.5) (syst) pb. All measurements are in good agreement with theoretical calculations at combined next-to-next-to-leading order quantum chromodynamics and next-to-leading order electroweak accuracy

Search for lepton-flavor violating decays of the Higgs boson in the mu tau and e tau final states in proton-proton collisions at root s=13 TeV

A search is presented for lepton-flavor violating decays of the Higgs boson to mu t and et. The dataset corresponds to an integrated luminosity of 137 fb(-1) collected at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV. No significant excess has been found, and the results are interpreted in terms of upper limits on lepton-flavor violating branching fractions of the Higgs boson. The observed (expected) upper limits on the branching fractions are, respectively, B(H -> mu t) e tau) < 0.22(0.16)% at 95% confidence level.Peer reviewe

De la Constitución de 1991 a la realidad. Debates políticos, jurídicos, territoriales e internacionales

Este libro presenta las reflexiones que sobre los efectos de la Constitución de 1991 y sus modificaciones han hecho profesores e investigadores de las facultades de Ciencia Política y Gobierno de la Universidad del Rosario, así como de la Facultad de Jurisprudencia de esta misma institución, expertos del Centro Colombiano de Derecho Procesal Constitucional y personalidades reconocidas de la vida nacional, en cuanto al equilibrio de poderes y el poder de reforma, las políticas públicas y la participación política, el Estado Social de Derecho, la perspectiva de nuestras relaciones internacionales y el ordenamiento territorial. Como todo texto jurídico-político, la Constitución Política de 1991 cobra vida y revela sus complejidades a través de su aplicación material día a día, práctica mucho más compleja que la original enunciación de sus contenidos escritos. Dos décadas del nuevo ordenamiento constitucional, de su ejecución dentro del propósito de impulsar el Estado Democrático Constitucional Social de Derecho, nos permiten reflexionar acerca de múltiples logros pero también de las enormes inquietudes y discusiones que hemos expuesto, las cuales serán revisadas y profundizadas a lo largo del presente estudio.This book presents the reflections on the effects of the 1991 Constitution and its modifications have been made by professors and researchers from the Faculties of Political Science and Government of the Universidad del Rosario, as well as from the Faculty of Jurisprudence of this same institution, experts from the Colombian Center for Constitutional Procedural Law and recognized personalities of national life, regarding the balance of powers and the power of reform, public policies and political participation, the Social State of Law, the perspective of our international relations and territorial ordering . Like any legal-political text, the 1991 Political Constitution comes to life and reveals its complexities through its day-to-day material application, a practice much more complex than the original enunciation of its written contents. Two decades of the new constitutional order, of its execution within the purpose of promoting the Constitutional Social Democratic State of Law, allow us to reflect on multiple achievements but also on the enormous concerns and discussions that we have exposed, which will be reviewed and deepened as throughout the present study

Search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector boson pairs in proton-proton collisions at root s=13 TeV

A search for charged Higgs bosons produced in vector boson fusion processes and decaying into vector bosons, using proton-proton collisions at root s = 13 TeV at the LHC, is reported. The data sample corresponds to an integrated luminosity of 137 fb(-1) collected with the CMS detector. Events are selected by requiring two or three electrons or muons, moderate missing transverse momentum, and two jets with a large rapidity separation and a large dijet mass. No excess of events with respect to the standard model background predictions is observed. Model independent upper limits at 95% confidence level are reported on the product of the cross section and branching fraction for vector boson fusion production of charged Higgs bosons as a function of mass, from 200 to 3000 GeV. The results are interpreted in the context of the Georgi-Machacek model.Peer reviewe