Comunicación, conflictos y paz: una agenda pendiente

El tema de La Comunicación, Los Conflictos y La Paz se nos presenta como un complejo conceptual de gran importancia en la actualidad. Las crisis y los conflictos a nivel global, y en particular en un país como Venezuela, plantean un panorama que coloca a la paz como tema urgente en la agenda comunicacional del entendimiento y las acciones para la buena convivencia. La paz se entiende hoy como mucho más que ausencia de guerra o violencia, y se percibe como acciónes sostenidas y crecientes para la buena convivencia y el bienestar, basadas en principios de equidad, respeto, tolerancia, y confianza (UNESCO, 1994)

Multidifferential study of identified charged hadron distributions in ZZ-tagged jets in proton-proton collisions at s=\sqrt{s}=13 TeV

Jet fragmentation functions are measured for the first time in proton-proton collisions for charged pions, kaons, and protons within jets recoiling against a $Z$ boson. The charged-hadron distributions are studied longitudinally and transversely to the jet direction for jets with transverse momentum 20 $< p_{\textrm{T}} < 100$ GeV and in the pseudorapidity range $2.5 < \eta < 4$. The data sample was collected with the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.64 fb$^{-1}$. Triple differential distributions as a function of the hadron longitudinal momentum fraction, hadron transverse momentum, and jet transverse momentum are also measured for the first time. This helps constrain transverse-momentum-dependent fragmentation functions. Differences in the shapes and magnitudes of the measured distributions for the different hadron species provide insights into the hadronization process for jets predominantly initiated by light quarks.Comment: All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-013.html (LHCb public pages

Study of the B−→Λc+Λˉc−K−B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-} decay

The decay $B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-}$ is studied in proton-proton collisions at a center-of-mass energy of $\sqrt{s}=13$ TeV using data corresponding to an integrated luminosity of 5 $\mathrm{fb}^{-1}$ collected by the LHCb experiment. In the $\Lambda_{c}^+ K^{-}$ system, the $\Xi_{c}(2930)^{0}$ state observed at the BaBar and Belle experiments is resolved into two narrower states, $\Xi_{c}(2923)^{0}$ and $\Xi_{c}(2939)^{0}$, whose masses and widths are measured to be $$m(\Xi_{c}(2923)^{0}) = 2924.5 \pm 0.4 \pm 1.1 \,\mathrm{MeV}, \\ m(\Xi_{c}(2939)^{0}) = 2938.5 \pm 0.9 \pm 2.3 \,\mathrm{MeV}, \\ \Gamma(\Xi_{c}(2923)^{0}) = \phantom{000}4.8 \pm 0.9 \pm 1.5 \,\mathrm{MeV},\\ \Gamma(\Xi_{c}(2939)^{0}) = \phantom{00}11.0 \pm 1.9 \pm 7.5 \,\mathrm{MeV},$$ where the first uncertainties are statistical and the second systematic. The results are consistent with a previous LHCb measurement using a prompt $\Lambda_{c}^{+} K^{-}$ sample. Evidence of a new $\Xi_{c}(2880)^{0}$ state is found with a local significance of $3.8\,\sigma$, whose mass and width are measured to be $2881.8 \pm 3.1 \pm 8.5\,\mathrm{MeV}$ and $12.4 \pm 5.3 \pm 5.8 \,\mathrm{MeV}$, respectively. In addition, evidence of a new decay mode $\Xi_{c}(2790)^{0} \to \Lambda_{c}^{+} K^{-}$ is found with a significance of $3.7\,\sigma$. The relative branching fraction of $B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-}$ with respect to the $B^{-} \to D^{+} D^{-} K^{-}$ decay is measured to be $2.36 \pm 0.11 \pm 0.22 \pm 0.25$, where the first uncertainty is statistical, the second systematic and the third originates from the branching fractions of charm hadron decays.Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-028.html (LHCb public pages

Measurement of the ratios of branching fractions R(D∗)\mathcal{R}(D^{*}) and R(D0)\mathcal{R}(D^{0})

The ratios of branching fractions $\mathcal{R}(D^{*})\equiv\mathcal{B}(\bar{B}\to D^{*}\tau^{-}\bar{\nu}_{\tau})/\mathcal{B}(\bar{B}\to D^{*}\mu^{-}\bar{\nu}_{\mu})$ and $\mathcal{R}(D^{0})\equiv\mathcal{B}(B^{-}\to D^{0}\tau^{-}\bar{\nu}_{\tau})/\mathcal{B}(B^{-}\to D^{0}\mu^{-}\bar{\nu}_{\mu})$ are measured, assuming isospin symmetry, using a sample of proton-proton collision data corresponding to 3.0 fb${ }^{-1}$ of integrated luminosity recorded by the LHCb experiment during 2011 and 2012. The tau lepton is identified in the decay mode $\tau^{-}\to\mu^{-}\nu_{\tau}\bar{\nu}_{\mu}$. The measured values are $\mathcal{R}(D^{*})=0.281\pm0.018\pm0.024$ and $\mathcal{R}(D^{0})=0.441\pm0.060\pm0.066$, where the first uncertainty is statistical and the second is systematic. The correlation between these measurements is $\rho=-0.43$. Results are consistent with the current average of these quantities and are at a combined 1.9 standard deviations from the predictions based on lepton flavor universality in the Standard Model.Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-039.html (LHCb public pages

Search for gravitational-lensing signatures in the full third observing run of the LIGO-Virgo network

Gravitational lensing by massive objects along the line of sight to the source causes distortions of gravitational wave-signals; such distortions may reveal information about fundamental physics, cosmology and astrophysics. In this work, we have extended the search for lensing signatures to all binary black hole events from the third observing run of the LIGO--Virgo network. We search for repeated signals from strong lensing by 1) performing targeted searches for subthreshold signals, 2) calculating the degree of overlap amongst the intrinsic parameters and sky location of pairs of signals, 3) comparing the similarities of the spectrograms amongst pairs of signals, and 4) performing dual-signal Bayesian analysis that takes into account selection effects and astrophysical knowledge. We also search for distortions to the gravitational waveform caused by 1) frequency-independent phase shifts in strongly lensed images, and 2) frequency-dependent modulation of the amplitude and phase due to point masses. None of these searches yields significant evidence for lensing. Finally, we use the non-detection of gravitational-wave lensing to constrain the lensing rate based on the latest merger-rate estimates and the fraction of dark matter composed of compact objects

Creación de una empresa dedicada a la prestación del servicio de acondicionamiento físico on-line para mujeres en el municipio de Cereté, Córdoba

Empresa: Gymline Ltda. Ubicación: Cereté-Córdoba. Servicio: acondicionamiento físico online. Oportunidad de negocio: se identifica como oportunidad de negocio las tendencias de comportamiento de la sociedad actual, orientada hacia el uso de la tecnología en su vida cotidiana, la creciente adopción de la telemedicina como herramienta para la adquisición de servicios relacionados con la salud. Sumada a la necesidad de la sociedad actual de llevar una vida sana, disminuir el sedentarismo y disminuir los índices de sobrepeso y obesidad que aquejan a gran parte de la población mundial. Competidores: no existe en el municipio una empresa que ofrezca un servicio de acondicionamiento físico, que incluya acompañamiento en elaboración y ejecución de rutinas de ejercicio, planes nutricionales y evaluación médica y cuya adquisición no requiera el traslado físico a un establecimiento. Por lo tanto, se puede afirmar que no existen actualmente competidores directos del servicio. Inversión fija: $164.130.271 Capital de trabajo:$33.833.416 TIR: 33,27% VPN: $ 55.405.045,29 RB/C: 2,34Introducción 1Resumen ejecutivo 41 Referente teórico y conceptual 51.1 Marco teórico 51.2 Marco conceptual 92 Módulo de mercado 122.1 Servicio 122.1.1 Características del servicio 122.1.2 Usos del servicio 122.1.3 Beneficios 132.1.4 Productos y/o servicios sustitutos 142.1.5 Productos y/o servicios complementarios 142.2 Consumidor final 142.2.1 Segmentación del mercado 152.2.1 Características socioculturales 162.3 Delimitación del área geográfica 162.4 Análisis de la demanda 172.4.1 Diseño muestral 172.4.1 Instrumento para recolectar la información 192.4.2 Análisis de los resultados 202.4.3 Cálculo de la demanda actual 372.4.4 Proyección de la demanda 392.5 Análisis de la oferta 402.5.1 Cálculo de la oferta actual 402.5.2 Proyección de la oferta 412.6 Determinación del tipo de demanda 422.6.1 Proyección de la demanda insatisfecha 422.7 Análisis de precios 432.8 Canales de comercialización 432.9 Imagen del servicio 442.10 Estrategia de publicidad 453 Módulo técnico 473.1 Tamaño del proyecto 473.2 Localización 483.2.1 Macrolocalización 493.2.2 Microlocalización 503.3 Distribución en planta 513.4 Ficha técnica 523.5 Proceso de prestación del servicio 543.5.1 Descripción del proceso de prestación del servicio 553.6 Cotización 574 Módulo organizacional 614.1 Naturaleza jurídica 614.2 Direccionamiento estratégico 624.2.1 Misión 624.2.2 Visión 634.2.3 Valores y principios 634.3 Organigrama 634.4 Manual de funciones 655 Módulo de impacto social, económico y ambiental 735.1 Impacto social 735.2 Impacto Económico 745.3 Impacto ambiental 756 Módulo financiero 766.1 Inversiones fijas 766.2 Inversiones diferidas 786.3 Distribución de costos 786.4 Punto de equilibrio 836.5 Capital de trabajo 856.6 Flujo neto de inversión 866.7 Proyecciones financieras 876.8 Flujo neto de operación 906.9 Flujo neto del plan de negocios 916.10 Evaluación financiera: VPN, TIR, RB/C 917 Fuentes de financiación 938 Conclusiones 949 Recomendaciones 9610 Bibliografía 9711 Anexos 103PregradoAdministrador(a) en Finanzas y Negocios InternacionalesCreación de empres

Projections for Total Ankle Arthroplasty based upon the National Inpatient Sample

Category: Ankle Arthritis Introduction/Purpose: The utilization of total ankle arthroplasty (TAA) has increased significantly over the past decade. While projections for hip and knee arthroplasty show an exponential increase in demand, there remains a paucity of literature on the projected demand for TAA. Outcomes for TAA show promising results at 10 year follow up and, as a result, the demand for TAA will likely see a significant increase over the next few decades. The purpose of this study is to assess the current trends and future demand of TAA utilization. Methods: National Inpatient Sample (NIS) data from 1997-2014 was used to identify trends in the utilization of TAA. United States Census Bureau data from 1997-2014 was used to identify historical population data and future population estimates. A linear regression model was created using Mathematica v11.3 to project future demand for total ankle arthroplasty. The data was stratified to show past and future trends based on gender and age. Results: The overall utilization rate of TAA increased from 232 procedures in 1997 to 4435 procedures in 2014. Based on our model, the overall demand for TAA is expected to increase by 174 percent to 12,161 procedures by 2045. Stratified by age groups, the number of procedures is predicted to increase by 69% in ages 18-44, 177% in ages 45-64, and 287% in ages 65-84 by 2045. Stratified by gender, males are projected to undergo 7,070 procedures and females are projected to undergo 6,114 procedures in 2045. Conclusion: Improvements in TAA techniques and implants are leading to better long term clinical outcomes following TAA. Based on our projection model, there is going to be a significant increase in demand for TAA by 2045

A 27-year Meta-analysis of Ankle Arthroplasty

Category: Ankle Arthritis Introduction/Purpose: Total ankle arthroplasty is an alternative to ankle arthrodesis for the treatment of end-stage arthritis while maintaining greater ankle motion and functionality. Early generation implants had unacceptably high complication rates. However, increasing surgical experience and newer third-generation designs have the potential to offer better outcomes. A previous systematic review reported results from studies published between 1990 and 2005, focusing on second-generation implants. We performed a systematic review of the literature addressing the intermediate-long-term outcomes of interest in total ankle arthroplasty studies published since 2006, and we compared our findings to those from earlier generation implants. Methods: A comprehensive search of MEDLINE for all articles published from 3/25/2006 to 2/1/2017 was conducted with a minimum two-year follow-up. Two reviewers evaluated each study to determine whether it was eligible for inclusion and abstracted the data of interest. Meta-analytic pooling of group results across studies was performed. The analysis focused on third-generation ankle implants. Results: The previous systematic review identified 10 studies (n=852), whereas we identified 40 studies (n=4835). The prior study showed a five and ten-year survival rate of 78% and 77%, respectively; respective rates were 86% (p=0.001) and 76% (p=0.53) in ours and similar to the previous study. The revision rate following TAR was 7% in the earlier review (loosening/subsidence, 28%). In ours, the revision rate following TAR was 9.6% (p=0.10) (component loosening, 37%); 3.4% (p=0.02) of ankles were converted to arthrodesis. The mean post-operative Ankle-Hindfoot score was 78.2 points in the prior review and 80.1 (p=0.20) points for ours. There is significant (p<0.0001) heterogeneity (I2=92.94%) between the studies; a meta-analysis of proportions showed that 81.6%of subjects had good outcomes while 46.6% had an excellent outcome. Conclusion: Based on these findings, the outcomes for third-generation total ankle arthroplasty have no significant differences in survival rates when compared to second-generation implants. However, functional scores, range of motion, and overall patient outcomes were significantly higher in the third-generation implants. However, data from early generation studies were sparse in comparison, so direct comparative studies are needed to strengthen this conclusion