825 research outputs found

    An Architecture for Biometric Electronic Identification Document System Based on Blockchain †

    Get PDF
    This paper proposes an architecture for biometric electronic identification document (e-ID) system based on Blockchain for citizens identity verification in transactions corresponding to the notary, registration, tax declaration and payment, basic health services and registration of economic activities, among others. To validate the user authentication, a biometric e-ID system is used to avoid spoofing and related attacks. Also, to validate the document a digital certificate is used with the corresponding public and private key for each citizen by using a user’s PIN. The proposed transaction validation process was implemented on a Blockchain system in order to record and verify the transactions made by all citizens registered in the electoral census, which guarantees security, integrity, scalability, traceability, and no-ambiguity. Additionally, a Blockchain network architecture is presented in a distributed and decentralized way including all the nodes of the network, database and government entities such as national register and notary offices. The results of the application of a new consensus algorithm to our Blockchain network are also presented showing mining time, memory and CPU usage when the number of transactions scales up

    Proyecto de emprendimiento social de mujeres para la producción de panela en la vereda el banco del Municipio de Yacopí Cundinamarca

    Get PDF
    Encuesta realizada el 10 de junio 2022 para conocer la necesidad del consumo de la panelaEl siguiente proyecto analiza la viabilidad de la realización de un emprendimiento social Panelgrup en la vereda el Banco, del municipio de Yacopi Cundinamarca, una empresa que valora el esfuerzo y habilidades de las mujeres cabeza de hogar, empoderándolas para que obtengan ingresos y apoyen en la economía del hogar, sobre todo es involucrar a las regiones en el crecimiento económico. Yacopí es un municipio del departamento de Cundinamarca donde su problemática ha sido el deterioro de las vías de acceso a la región y a las escasas oportunidades laborales de sus pobladores. por tanto, la Asociación de Mujeres busca que esta región fabrique y comercialice la panela y se aprovechen los recursos que esta vereda brinda, ya que los campesinos cosechan en sus fincas la caña de azúcar y luego la procesan para obtener este gran producto energético de esta manera se dará a conocer el municipio por su fabricación de panela y liderazgo en emprendimientos sociales de la región.The following project analyzes the feasibility of carrying out a PANELGRUP SOCIAL enterprise in the village of El Banco, in the municipality of Yacopi Cundinamarca, a company that values the effort and skills of women heads of household, empowering them to obtain income and support in home economics, above all is to involve the regions in economic growth. Yacopi is a municipality in the department of Cundinamarca where its problem has been the deteroration of the access roads to the region and the few job opportunities for its inhabitants. Therefore, the women s Association seeks that this region manufactures and markets panela and takes advantage of the resources that this village provides, since the peasants harvest sugar cane on their farms and then process it to obtain this great energy product from this region. In this way, municipality will be known for its manufacture of panela and leadership in social enterprises in the region

    Development and Metrological Characterization of a Multi-sensor Device for Indoor Environmental Quality (IEQ) monitoring

    Get PDF
    Indoor Environmental Quality (IEQ), which affects people's health, comfort, well-being and productivity, combines thermal, visual, acoustic and air quality conditions. This work deals with design, development and metrological characterization of a low-cost multi-sensor device that is able to detect the quality conditions of indoor environments for IEQ purposes. The device, hereafter referred as PROMET&O (PROactive Monitoring for indoor EnvironmenTal quality & cOmfort) embeds a set of low-cost sensors that measure air temperature and relative humidity, illuminance, sound pressure level, carbon monoxide, carbon dioxide, particulate matter, formaldehyde, and nitrogen dioxide. The basic architecture of the device is described and the design criteria that are related to the measurement requirements are highlighted. Particular attention has been paid towards the traceability assurance of the measurements provided by PROMET&O by means of specifically conceived calibration procedures, which have been tailored to the requirements of each measurement quantity. The calibration is based on the comparison to reference standards following commonly employed or ad-hoc developed technical procedures. The defined calibration procedures can be applied both for the single sensors and for the set of sensors integrated in the multi-sensor case. For the latter, the effects of the percentage of permeable case surface and the sensors allocation are also investigated. A preliminary uncertainty evaluation of the proposed multi-sensor device is reported for the carbon dioxide and the illuminance sensors taking the defined calibration procedures into account

    Eye Movement Desensitization and Reprocessing desde la Propuesta de Valoración de Mario Bunge

    Get PDF
    The practice of psychological intervention should be based on the best scientific evidence about its efficacy. The objective of this study was to analyze the attitude, validity and scientific domain possessed by the psychotherapy of Eye Movement Desensitization and Reprocessing (EMDR) based on a scientific realism approach proposed by Bunge in his comparison table of scientific attitudes and pseudoscientific. The methodological design included linguistic and cultural adaptation, content validation with the criteria of judges, from the Bunge table; the bibliographic search of articles between 2016-2020, in the Scopus and Web of Science databases, with experimental and quasi-experimental study designs related to EMDR. The findings evidenced 2417 publications, 38 of which meet the criteria indicated, where it is indicated that EMDR reflects the criteria to be considered a science, sustaining its effectiveness.La práctica de la intervención psicológica debería estar basada en las mejores evidencias científicas acerca de su eficacia. El objetivo de este estudio fue analizar la actitud, validez y dominio científico que posee la psicoterapia de la Desensibilización y Reprocesamiento por los Movimientos Oculares (EMDR) con base en un enfoque de realismo científico propuesto por Bunge en su tabla de comparación de las actitudes científicas y pseudocientíficas. El diseño metodológico incluyó la adaptación lingüística y cultural, la validación de contenido con el criterio de jueces, de la tabla de Bunge; la búsqueda bibliográfica de artículos entre 2016-2020, en las bases de datos de Scopus y Web of Science, con diseños de estudio experimentales y cuasiexperimentales relacionados al EMDR. Los hallazgos evidenciaron 2417 publicaciones, 38 de las cuales cumplen con los criterios señalados, en donde se indica que la EMDR reflejan los criterios para considerarse una ciencia, sosteniendo su eficacia

    Development and validation of HERWIG 7 tunes from CMS underlying-event measurements

    Get PDF
    This paper presents new sets of parameters (“tunes”) for the underlying-event model of the HERWIG7 event generator. These parameters control the description of multiple-parton interactions (MPI) and colour reconnection in HERWIG7, and are obtained from a fit to minimum-bias data collected by the CMS experiment at s=0.9, 7, and 13Te. The tunes are based on the NNPDF 3.1 next-to-next-to-leading-order parton distribution function (PDF) set for the parton shower, and either a leading-order or next-to-next-to-leading-order PDF set for the simulation of MPI and the beam remnants. Predictions utilizing the tunes are produced for event shape observables in electron-positron collisions, and for minimum-bias, inclusive jet, top quark pair, and Z and W boson events in proton-proton collisions, and are compared with data. Each of the new tunes describes the data at a reasonable level, and the tunes using a leading-order PDF for the simulation of MPI provide the best description of the dat

    MUSiC : a model-unspecific search for new physics in proton-proton collisions at root s=13TeV

    Get PDF
    Results of the Model Unspecific Search in CMS (MUSiC), using proton-proton collision data recorded at the LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.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

    Get PDF
    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

    Measurement of prompt open-charm production cross sections in proton-proton collisions at root s=13 TeV

    Get PDF
    The production cross sections for prompt open-charm mesons in proton-proton collisions at a center-of-mass energy of 13TeV are reported. The measurement is performed using a data sample collected by the CMS experiment corresponding to an integrated luminosity of 29 nb(-1). The differential production cross sections of the D*(+/-), D-+/-, and D-0 ((D) over bar (0)) mesons are presented in ranges of transverse momentum and pseudorapidity 4 < p(T) < 100 GeV and vertical bar eta vertical bar < 2.1, respectively. The results are compared to several theoretical calculations and to previous measurements.Peer reviewe

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

    Get PDF
    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

    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

    Get PDF
    Peer reviewe
    corecore