Modelo de negocio enfocado a empresas START UP que prestan servicios de logística de transporte de mercaderías en el municipio de San Salvador, departamento de San Salvador.

En los últimos años el servicio de logística de transporte de mercaderías en el municipio de San Salvador departamento de San Salvador, ha sido un factor fundamental para aquellas empresas que se ven en la necesidad de contratar dicho servicio para trasladar sus mercancías, sin embargo, este ha venido teniendo una serie de dificultades para que el servicio sea prestado de manera adecuada, dificultades como, manejo inadecuado de los bienes, robo, mercancías no son sean entregadas en fecha y tiempo establecido, en muchas ocasiones dichos inconvenientes genera deficiencia en sus operaciones lo cual les afecta sus resultados con mayores costo y gastos y por consiguiente bajos ingresos. El presente trabajo se desarrolla en una Start Up de Logística de Transporte que presta servicios de transporte de mercadería para abastecer a Ferreterías, Almacenes, Farmacias y Supermercados, por medio de una aplicación móvil se inicia el proceso de solicitud del servicio. El problema radica en lo que representa en costo y el desabastecimiento de las bodegas de los clientes, por los servicios recibidos de las empresas de logística de transporte tradicionales, en donde lo importante es el cumplimiento del tiempo y la entrega de mercadería en perfectas condiciones. Este documento tiene como objetivo primordial el diseño de un modelo de negocio enfocado a empresas Start Up de logística de transporte de mercaderías el municipio de San Salvador departamento de San Salvador, para que a través del nuevo modelo de negocio las empresas como: ferreterías, almacenes, farmacias y supermercados ii que demandan dicho servicio puedan acceder a una aplicación móvil que les permita contratar el servicio de logística de transporte de mercaderías de una forma fácil y segura que les garantice que las mercancías transportadas no corren riesgo alguno así como que esta nueva modalidad será beneficioso para la operación del negocio, con una mayor eficiencia y a la vez les permita reducir costos. La metodología de la investigación utilizada es bajo el método hipotético deductivo, las unidades de análisis son las empresas que prestan servicios de logística y transporte de forma convencional en el municipio de San Salvador, departamento de San Salvador; la técnica utilizada es la encuesta y la observación; el instrumento para recolección de datos es el cuestionario. Los resultados obtenidos muestran que el sector que más demanda el servicio de logística y transporte es el sector industrial, para la salvaguarda de la mercancía se contratan a empresas de seguros, todos utilizan dispositivos GPS, la vía de comunicación que más se utiliza es la llamada telefónica, la principal dificultad para la prestación de servicio es la delincuencia, dentro de los servicios de logística el servicio de transporte representa mayores ingresos y lo que representa mayores costos es el almacenamiento, la mayoría ha presentado incumplimiento en las fechas de entrega, lo que tiene como consecuencia de incumplimiento contractual lo que se traduce a reembolso proporcional. Las principales conclusiones que se mencionan son las siguientes: El servicio de logística de transporte de mercadería tradicional en el municipio de San Salvador departamento de San Salvador presenta una serie de dificultades, como lo iii es una eficiencia baja del servicio recibido, manejo inadecuado de las mercancías transportadas y aumento de costos para el usuario que contrata dicho servicio. Las Tecnologías de Información y Comunicación” (TIC´s), resultan un recurso muy importante para diseñar nuevos modelos de negocios que faciliten el realizar actividades comerciales entre proveedores y clientes. Tomando en cuenta las conclusiones antes mencionadas se recomienda diseñar un modelo de negocio de logística de transporte a través de una Start up, que sea capaz de solucionar los problemas mencionados y que, a la vez, este a la medida para aquellos usuarios que demanda el servicio de logística de transporte de mercadería, de modo que se aprovechen al máximo los recursos tecnológicos

Measurement of the W gamma Production Cross Section in Proton-Proton Collisions at root s=13 TeV and Constraints on Effective Field Theory Coefficients

A fiducial cross section for W gamma production in proton-proton collisions is measured at a center-of-mass energy of 13 TeV in 137 fb(-1) of data collected using the CMS detector at the LHC. The W -> e nu and mu nu decay modes are used in a maximum-likelihood fit to the lepton-photon invariant mass distribution to extract the combined cross section. The measured cross section is compared with theoretical expectations at next-to-leading order in quantum chromodynamics. In addition, 95% confidence level intervals are reported for anomalous triple-gauge couplings within the framework of effective field theory.Peer reviewe

Search for top squark production in fully hadronic final states in proton-proton collisions at root s=13 TeV

A search for production of the supersymmetric partners of the top quark, top squarks, is presented. The search is based on proton-proton collision events containing multiple jets, no leptons, and large transverse momentum imbalance. The data were collected with the CMS detector at the CERN LHC at a center-of-mass energy of 13 TeV, and correspond to an integrated luminosity of 137 fb(-1). The targeted signal production scenarios are direct and gluino-mediated top squark production, including scenarios in which the top squark and neutralino masses are nearly degenerate. The search utilizes novel algorithms based on deep neural networks that identify hadronically decaying top quarks and W bosons, which are expected in many of the targeted signal models. No statistically significant excess of events is observed relative to the expectation from the standard model, and limits on the top squark production cross section are obtained in the context of simplified supersymmetric models for various production and decay modes. Exclusion limits as high as 1310 GeVare established at the 95% confidence level on the mass of the top squark for direct top squark production models, and as high as 2260 GeV on the mass of the gluino for gluino-mediated top squark production models. These results represent a significant improvement over the results of previous searches for supersymmetry by CMS in the same final state.Peer reviewe

Performance of the CMS muon trigger system in proton-proton collisions at √s = 13 TeV

The muon trigger system of the CMS experiment uses a combination of hardware and software to identify events containing a muon. During Run 2 (covering 2015-2018) the LHC achieved instantaneous luminosities as high as 2 × 10 cm s while delivering proton-proton collisions at √s = 13 TeV. The challenge for the trigger system of the CMS experiment is to reduce the registered event rate from about 40 MHz to about 1 kHz. Significant improvements important for the success of the CMS physics program have been made to the muon trigger system via improved muon reconstruction and identification algorithms since the end of Run 1 and throughout the Run 2 data-taking period. The new algorithms maintain the acceptance of the muon triggers at the same or even lower rate throughout the data-taking period despite the increasing number of additional proton-proton interactions in each LHC bunch crossing. In this paper, the algorithms used in 2015 and 2016 and their improvements throughout 2017 and 2018 are described. Measurements of the CMS muon trigger performance for this data-taking period are presented, including efficiencies, transverse momentum resolution, trigger rates, and the purity of the selected muon sample. This paper focuses on the single- and double-muon triggers with the lowest sustainable transverse momentum thresholds used by CMS. The efficiency is measured in a transverse momentum range from 8 to several hundred GeV

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

Search for long-lived particles decaying to jets with displaced vertices in proton-proton collisions at root s=13 Te V

A search is presented for long-lived particles produced in pairs in proton-proton collisions at the LHC operating at a center-of-mass energy of 13 TeV. The data were collected with the CMS detector during the period from 2015 through 2018, and correspond to a total integrated luminosity of 140 fb(-1). This search targets pairs of long-lived particles with mean proper decay lengths between 0.1 and 100 mm, each of which decays into at least two quarks that hadronize to jets, resulting in a final state with two displaced vertices. No significant excess of events with two displaced vertices is observed. In the context of R-parity violating supersymmetry models, the pair production of long-lived neutralinos, gluinos, and top squarks is excluded at 95% confidence level for cross sections larger than 0.08 fb, masses between 800 and 3000 GeV, and mean proper decay lengths between 1 and 25 mm.Peer reviewe

Search for new particles in events with energetic jets and large missing transverse momentum in proton-proton collisions at root s=13 TeV

A search is presented for new particles produced at the LHC in proton-proton collisions at root s = 13 TeV, using events with energetic jets and large missing transverse momentum. The analysis is based on a data sample corresponding to an integrated luminosity of 101 fb(-1), collected in 2017-2018 with the CMS detector. Machine learning techniques are used to define separate categories for events with narrow jets from initial-state radiation and events with large-radius jets consistent with a hadronic decay of a W or Z boson. A statistical combination is made with an earlier search based on a data sample of 36 fb(-1), collected in 2016. No significant excess of events is observed with respect to the standard model background expectation determined from control samples in data. The results are interpreted in terms of limits on the branching fraction of an invisible decay of the Higgs boson, as well as constraints on simplified models of dark matter, on first-generation scalar leptoquarks decaying to quarks and neutrinos, and on models with large extra dimensions. Several of the new limits, specifically for spin-1 dark matter mediators, pseudoscalar mediators, colored mediators, and leptoquarks, are the most restrictive to date.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

Probing effective field theory operators in the associated production of top quarks with a Z boson in multilepton final states at root s=13 TeV

Peer reviewe