22 research outputs found

    Supply chain management SCM

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    Nuevas alternativas organizativas emergen para atender los retos y una de ellas, es la de competencia entre redes de valor, a partir de estructuras federadas y extendidas. Supply Chain es la estructura, Supply Chain Management la gestión de las relaciones o enlaces entre las empresas del Supply Chain o Red de Valor, y Logística, lo que dinamiza dichas relaciones. Con este curso de logística aprendimos a manejar el conjunto de herramientas sistematizadas, las cuales son las más utilizadas en los principales sistemas y procesos de gestión logística. Dominando la técnica de planificar, implementar y controlar las operaciones que se diseñan creando valor en productos y servicios. Esta concepción organizativa además de crear altos niveles de complejidad, especialmente en el modelaje del Supply Chain, la definición de las relaciones y el diseño del sistema logístico, exige un tratamiento igualmente complejo con respecto al cambio, porque propone virar de una cultura imperante, a otra fundamentada en Supply Chain Management y Logística, desde una perspectiva moderna, la cual va más allá de la traducción literal (cadena de suministro), sino Red de Valor; ya que no son actividades logísticas aisladas, sino como una función de soporte al Supply Chain; ya no es un enfoque logístico fundamentado en la masa, sino fundamentado en la velocidad y la exactitud; el flujo de los materiales es jalonado por el mercado y no buscando producir para almacenar, el sistema organización no es funcional, sino por proceso. De acuerdo a esta nueva perspectiva resulta evidente que Supply Chain, Supply Chain Management, y Logística, enfrentan un acelerado cambio de contexto, exigiendo de los Ingenieros Industriales, respuestas en cada uno de los nodos que hacen parte de la red desde el punto de vista estratégico, táctico y operativo a lo largo de esta. El curso está enfocado a proveer a los estudiantes, de manera práctica y clara, las oportunidades que tienen nuestras organizaciones, con la implementación de estrategias en Supply Chain Management, y del conocimiento de los diferentes procesos logísticos como el aprovisionamiento, el transporte y la distribución y la gestión de almacenes e inventarios, como soporte a la gestión de la red de valor en una compañía para que pueda responder a las exigencias actuales de los mercados.New emerging organizational alternatives to address the challenges and one of them, is the competition between value networks, from federated and extended structures. Supply Chain is the structure, Supply Chain Management the management of relationships or links between the companies of Supply Chain or Value Network, and Logistics, which dynamizes these relationships. With this course of logistics you will learn to manage the set of systematized tools, which are the most used in the main systems and logistics management processes. Mastering the technique of planning, implementing and controlling the operations that are designed creating value in products and services. This organizational conception, in addition to creating high levels of complexity, especially in the modeling of the supply chain, the definition of relationships and the design of the logistics system, demands a complex work with respect to change, because it proposes to change from a prevailing culture , another one based on Supply Chain Management and Logistics, from a modern perspective, which beyond the literal translation, but Network of Value; since there are no isolated logistic activities, but as a function of support to the Supply Chain; it is no longer a logistic approach based on mass, but based on speed and accuracy; the flow of materials is marked by the market and can not be produced to store, the organization system is not functional, but by process. According to this new perspective it is evident that Supply Chain, Supply Chain Management, and Logistics, and a change of context, demanding from the industrial engineers, answers in each of the nodes that are part of the red from the strategic point of view , tactical and operative throughout this. The course is focused on providing students, in a practical and clear manner, the opportunities that our organizations have, with the implementation of strategies in Supply Chain Management, and the knowledge of the different logistic processes such as provisioning, transportation and distribution. and the management of warehouses and inventories, as a support to the management of the value network in a company so that it responds to the current demands of the markets

    Ten golden rules for optimal antibiotic use in hospital settings: the WARNING call to action

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    Antibiotics are recognized widely for their benefits when used appropriately. However, they are often used inappropriately despite the importance of responsible use within good clinical practice. Effective antibiotic treatment is an essential component of universal healthcare, and it is a global responsibility to ensure appropriate use. Currently, pharmaceutical companies have little incentive to develop new antibiotics due to scientific, regulatory, and financial barriers, further emphasizing the importance of appropriate antibiotic use. To address this issue, the Global Alliance for Infections in Surgery established an international multidisciplinary task force of 295 experts from 115 countries with different backgrounds. The task force developed a position statement called WARNING (Worldwide Antimicrobial Resistance National/International Network Group) aimed at raising awareness of antimicrobial resistance and improving antibiotic prescribing practices worldwide. The statement outlined is 10 axioms, or “golden rules,” for the appropriate use of antibiotics that all healthcare workers should consistently adhere in clinical practice

    Production of inclusive ϒ(1S) and ϒ(2S) in p–Pb collisions at √sNN = 5.02 TeV

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    We report on the production of inclusive Υ(1S) and Υ(2S) in p-Pb collisions at sNN−−−√=5.02 TeV at the LHC. The measurement is performed with the ALICE detector at backward (−4.46<ycms<−2.96) and forward (2.03<ycms<3.53) rapidity down to zero transverse momentum. The production cross sections of the Υ(1S) and Υ(2S) are presented, as well as the nuclear modification factor and the ratio of the forward to backward yields of Υ(1S). A suppression of the inclusive Υ(1S) yield in p-Pb collisions with respect to the yield from pp collisions scaled by the number of binary nucleon-nucleon collisions is observed at forward rapidity but not at backward rapidity. The results are compared to theoretical model calculations including nuclear shadowing or partonic energy loss effects

    Beauty production in pp collisions at √s = 2.76 TeV measured via semi-electronic decays

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    The ALICE collaboration at the LHC reports measurement of the inclusive production cross section of electrons from semi-leptonic decays of beauty hadrons with rapidity |y|<0.8 and transverse momentum 1<pT<10 GeV/c, in pp collisions at s√= 2.76 TeV. Electrons not originating from semi-electronic decay of beauty hadrons are suppressed using the impact parameter of the corresponding tracks. The production cross section of beauty decay electrons is compared to the result obtained with an alternative method which uses the distribution of the azimuthal angle between heavy-flavour decay electrons and charged hadrons. Perturbative QCD calculations agree with the measured cross section within the experimental and theoretical uncertainties. The integrated visible cross section, σb→e=3.47±0.40(stat)+1.12−1.33(sys)±0.07(norm)μb, was extrapolated to full phase space using Fixed Order plus Next-to-Leading Log (FONLL) predictions to obtain the total bb¯ production cross section, σbb¯=130±15.1(stat)+42.1−49.8(sys)+3.4−3.1(extr)±2.5(norm)±4.4(BR)μb

    Measurement of pion, kaon and proton production in proton-proton collisions at √s = 7 TeV

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    The measurement of primary π±, K±, p and p¯¯¯ production at mid-rapidity (|y|< 0.5) in proton-proton collisions at s√=7 TeV performed with ALICE (A Large Ion Collider Experiment) at the Large Hadron Collider (LHC) is reported. Particle identification is performed using the specific ionization energy loss and time-of-flight information, the ring-imaging Cherenkov technique and the kink-topology identification of weak decays of charged kaons. Transverse momentum spectra are measured from 0.1 up to 3 GeV/c for pions, from 0.2 up to 6 GeV/c for kaons and from 0.3 up to 6 GeV/c for protons. The measured spectra and particle ratios are compared with QCD-inspired models, tuned to reproduce also the earlier measurements performed at the LHC. Furthermore, the integrated particle yields and ratios as well as the average transverse momenta are compared with results at lower collision energies

    Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb–Pb collisions at √sNN = 2.76 TeV

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    The elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity (|y| < 0.7) is measured in Pb-Pb collisions at sNN−−−√=2.76 TeV with ALICE at the LHC. The particle azimuthal distribution with respect to the reaction plane can be parametrized with a Fourier expansion, where the second coefficient (v2) represents the elliptic flow. The v2 coefficient of inclusive electrons is measured in three centrality classes (0-10%, 10-20% and 20-40%) with the event plane and the scalar product methods in the transverse momentum (pT) intervals 0.5-13 GeV/c and 0.5-8 GeV/c, respectively. After subtracting the background, mainly from photon conversions and Dalitz decays of neutral mesons, a positive v2 of electrons from heavy-flavour hadron decays is observed in all centrality classes, with a maximum significance of 5.9σ in the interval 2< pT < 2.5 GeV/c in semi-central collisions (20-40%). The value of v2 decreases towards more central collisions at low and intermediate pT (0.5 < pT < 3 GeV/c). The v2 of electrons from heavy-flavour hadron decays at mid-rapidity is found to be similar to the one of muons from heavy-flavour hadron decays at forward rapidity (2.5 < y < 4). The results are described within uncertainties by model calculations including substantial elastic interactions of heavy quarks with an expanding strongly-interacting medium

    Measurement of dijet kT in p–Pb collisions at √sNN = 5.02 TeV

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    A measurement of dijet correlations in p-Pb collisions at sNN−−−√=5.02 TeV with the ALICE detector is presented. Jets are reconstructed from charged particles measured in the central tracking detectors and neutral energy deposited in the electromagnetic calorimeter. The transverse momentum of the full jet (clustered from charged and neutral constituents) and charged jet (clustered from charged particles only) is corrected event-by-event for the contribution of the underlying event, while corrections for underlying event fluctuations and finite detector resolution are applied on an inclusive basis. A projection of the dijet transverse momentum, kTy=pch+neT,jetsin(Δφdijet) with Δφdijet the azimuthal angle between a full and charged jet and pch+neT,jet the transverse momentum of the full jet, is used to study nuclear matter effects in p-Pb collisions. This observable is sensitive to the acoplanarity of dijet production and its potential modification in p-Pb collisions with respect to pp collisions. Measurements of the dijet kTy as a function of the transverse momentum of the full and recoil charged jet, and the event multiplicity are presented. No significant modification of kTy due to nuclear matter effects in p-Pb collisions with respect to the event multiplicity or a PYTHIA8 reference is observed

    Two-pion femtoscopy in p–Pb collisions at √sNN = 5.02 TeV

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    We report the results of the femtoscopic analysis of pairs of identical pions measured in p-Pb collisions at sNN−−−√=5.02 TeV. Femtoscopic radii are determined as a function of event multiplicity and pair momentum in three spatial dimensions. As in the pp collision system, the analysis is complicated by the presence of sizable background correlation structures in addition to the femtoscopic signal. The radii increase with event multiplicity and decrease with pair transverse momentum. When taken at comparable multiplicity, the radii measured in p-Pb collisions, at high multiplicity and low pair transverse momentum, are 10-20% higher than those observed in pp collisions but below those observed in A-A collisions. The results are compared to hydrodynamic predictions at large event multiplicity as well as discussed in the context of calculations based on gluon saturation

    Forward-backward multiplicity correlations in pp collisions at √s = 0.9, 2.76 and 7 TeV

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    The strength of forward-backward (FB) multiplicity correlations is measured by the ALICE detector in proton-proton (pp) collisions at s√=0.9, 2.76 and 7 TeV. The measurement is performed in the central pseudorapidity region (|η|0.3 GeV/c. Two separate pseudorapidity windows of width (δη) ranging from 0.2 to 0.8 are chosen symmetrically around η=0. The multiplicity correlation strength (bcor) is studied as a function of the pseudorapidity gap (ηgap) between the two windows as well as the width of these windows. The correlation strength is found to decrease with increasing ηgap and shows a non-linear increase with δη. A sizable increase of the correlation strength with the collision energy, which cannot be explained exclusively by the increase of the mean multiplicity inside the windows, is observed. The correlation coefficient is also measured for multiplicities in different configurations of two azimuthal sectors selected within the symmetric FB η-windows. Two different contributions, the short-range (SR) and the long-range (LR), are observed. The energy dependence of bcor is found to be weak for the SR component while it is strong for the LR component. Moreover, the correlation coefficient is studied for particles belonging to various transverse momentum intervals chosen to have the same mean multiplicity. Both SR and LR contributions to bcor are found to increase with pT in this case. Results are compared to PYTHIA and PHOJET event generators and to a string-based phenomenological model. The observed dependencies of bcor add new constraints on phenomenological models

    Measurement of charm and beauty production at central rapidity versus charged-particle multiplicity in proton–proton collisions at √s = 7 TeV

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    Prompt D meson and non-prompt J/ψ yields are studied as a function of the multiplicity of charged particles produced in inelastic proton-proton collisions at a centre-of-mass energy of s√=7 TeV. The results are reported as a ratio between yields in a given multiplicity interval normalised to the multiplicity-integrated ones (relative yields). They are shown as a function of the multiplicity of charged particles normalised to the average value for inelastic collisions (relative charged-particle multiplicity). D0, D+ and D∗+ mesons are measured in five pT intervals from 1 to 20 GeV/c and for |y|1.3 GeV/c and |y|0. The fraction of non-prompt J/ψ in the inclusive J/ψ yields shows no dependence on the charged-particle multiplicity at central rapidity. Charm and beauty hadron relative yields exhibit a similar increase with increasing charged-particle multiplicity. The measurements are compared to PYTHIA 8, EPOS 3 and percolation calculations
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