Sistema de Informacion que Utiliza Datos del Proceso de Fabricacion de un Controlador Logico Programable

En la actualidad, las empresas requieren de la obtención de datos precisos, análisis que apoye en la toma de decisiones y en la mejora continua; estos procesos han llegado a formar parte de la visión de negocios de la gerencia empresarial sobre la cual están orientados los objetivos de negocios para poder ser y permanecer competitivos. Las empresas de manufactura tienen la necesidad de obtener y analizar datos relacionados a los procesos de producción para determinar el nivel de eficiencia de estos y en base a la información obtenida tomar decisiones que ayuden a la empresa a mejorar o corregir situaciones que puedan ser de carácter humano, operativo, procedural o de equipo. En este proyecto de desarrollo de software se ha diseñado e implementado un sistema de información, con el método de cascada, para una empresa de manufactura localizada en la frontera norte de México con Estados Unidos en el sector del cuidado de la salud; el sistema utiliza datos desde un controlador lógico programable, en el cual se obtienen datos para su monitoreo como: alarmas de la máquina, conteo de eventos, duración de cada alarma y velocidad de producción. Dando como resultado información de los códigos de producción, turno, día y hora; además de medir de forma precisa la eficiencia de la máquina, así como la detección de tendencias y la creación de alertas oportunas hacia personas técnicas para la solución de problemas. El sistema consta de un análisis de velocidad y carga de trabajo del procesador del PLC, desarrollo de la conexión entre el procesador y el sistema, preparación del sistema para el traspaso de información, programación de la base de datos en Access y el diseño de la interfaz gráfica en Visual Basic. Net. Entre los logros más importantes obtenidos de la implementación del sistema de información se encuentran: Disponibilidad de la información en tiempo real y obtención de datos históricos de las variables de producción del equipo, mejoramiento de las tareas de supervisión y control de procesos, así como el envío de alertas a usuarios específicos para reacción adecuada a eventos de fallas.   Currently, companies require obtaining accurate data, analysis that supports decision-making and continuous improvement; these processes have become part of the business management vision on which business objectives are oriented to be and remain competitive. Manufacturing companies have the need to obtain and analyze data related to production processes to determine their level of efficiency and based on the information obtained, make decisions that help the company improve or correct situations that may be of human, operational, procedural or equipment. In this software development project, with the cascade method, an information system has been designed and implemented, for a manufacturing company located on the northern border of Mexico with the United States in the health care sector; the system uses data from a programmable logic controller, in which data such as: machine alarms, event count, duration of each alarm, and production speed were obtained for monitoring. Resulting in information on the production codes, shift, day and hour; in addition to accurately measuring the efficiency of the machine, as well as the detection of trends and the creation of timely alerts to technical personnel for troubleshooting. The system consists of an analysis of the speed and workload of the PLC processor, development of the connection between the processor and the system, preparation of the system for the transfer of information, programming of the database and the design of a graphical interface in Visual Basic.Net . Among the most important achievements obtained from the implementation of the information system are: Availability of information in real time and obtaining historical data from production variables, improvement of supervision tasks and process control, as well such as sending alerts to specific users for adequate reaction to failure events

Standalone vertex finding in the ATLAS muon spectrometer

A dedicated reconstruction algorithm to find decay vertices in the ATLAS muon spectrometer is presented. The algorithm searches the region just upstream of or inside the muon spectrometer volume for multi-particle vertices that originate from the decay of particles with long decay paths. The performance of the algorithm is evaluated using both a sample of simulated Higgs boson events, in which the Higgs boson decays to long-lived neutral particles that in turn decay to bbar b final states, and pp collision data at √s = 7 TeV collected with the ATLAS detector at the LHC during 2011

Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC

Measurements are presented of production properties and couplings of the recently discovered Higgs boson using the decays into boson pairs, H →γ γ, H → Z Z∗ →4l and H →W W∗ →lνlν. The results are based on the complete pp collision data sample recorded by the ATLAS experiment at the CERN Large Hadron Collider at centre-of-mass energies of √s = 7 TeV and √s = 8 TeV, corresponding to an integrated luminosity of about 25 fb−1. Evidence for Higgs boson production through vector-boson fusion is reported. Results of combined fits probing Higgs boson couplings to fermions and bosons, as well as anomalous contributions to loop-induced production and decay modes, are presented. All measurements are consistent with expectations for the Standard Model Higgs boson

Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC

The uncertainty on the calorimeter energy response to jets of particles is derived for the ATLAS experiment at the Large Hadron Collider (LHC). First, the calorimeter response to single isolated charged hadrons is measured and compared to the Monte Carlo simulation using proton-proton collisions at centre-of-mass energies of sqrt(s) = 900 GeV and 7 TeV collected during 2009 and 2010. Then, using the decay of K_s and Lambda particles, the calorimeter response to specific types of particles (positively and negatively charged pions, protons, and anti-protons) is measured and compared to the Monte Carlo predictions. Finally, the jet energy scale uncertainty is determined by propagating the response uncertainty for single charged and neutral particles to jets. The response uncertainty is 2-5% for central isolated hadrons and 1-3% for the final calorimeter jet energy scale.Comment: 24 pages plus author list (36 pages total), 23 figures, 1 table, submitted to European Physical Journal

Measurement of the top quark pair cross section with ATLAS in pp collisions at √s=7 TeV using final states with an electron or a muon and a hadronically decaying τ lepton

A measurement of the cross section of top quark pair production in proton-proton collisions recorded with the ATLAS detector at the Large Hadron Collider at a centre-of-mass energy of 7 TeV is reported. The data sample used corresponds to an integrated luminosity of 2.05 fb -1. Events with an isolated electron or muon and a τ lepton decaying hadronically are used. In addition, a large missing transverse momentum and two or more energetic jets are required. At least one of the jets must be identified as originating from a b quark. The measured cross section, σtt-=186±13(stat.)±20(syst.)±7(lumi.) pb, is in good agreement with the Standard Model prediction

Measurement of the top quark-pair production cross section with ATLAS in pp collisions at \sqrt{s}=7\TeV

A measurement of the production cross-section for top quark pairs(\ttbar) in $pp$ collisions at \sqrt{s}=7 \TeV is presented using data recorded with the ATLAS detector at the Large Hadron Collider. Events are selected in two different topologies: single lepton (electron $e$ or muon $\mu$) with large missing transverse energy and at least four jets, and dilepton ($ee$, $\mu\mu$ or $e\mu$) with large missing transverse energy and at least two jets. In a data sample of 2.9 pb-1, 37 candidate events are observed in the single-lepton topology and 9 events in the dilepton topology. The corresponding expected backgrounds from non-\ttbar Standard Model processes are estimated using data-driven methods and determined to be $12.2 \pm 3.9$ events and $2.5 \pm 0.6$ events, respectively. The kinematic properties of the selected events are consistent with SM \ttbar production. The inclusive top quark pair production cross-section is measured to be \sigmattbar=145 \pm 31 ^{+42}_{-27} pb where the first uncertainty is statistical and the second systematic. The measurement agrees with perturbative QCD calculations.Comment: 30 pages plus author list (50 pages total), 9 figures, 11 tables, CERN-PH number and final journal adde

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