159 research outputs found

    AUTO CONCEPTO: UNA MIRADA DESDE EL DESEMPEÑO OCUPACIONAL DEL ADOLESCENTE EN CONFLICTO CON LA LEY

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    Este estudio se basó en Analizar la relación existente entre el Autoconcepto y el Desempeño Ocupacional del Adolescente en Conflicto con la ley de las Fundaciones Familiar Faro y Crecer en Familia de la Ciudad de Cúcuta, de acuerdo a los instrumentos aplicados durante la investigación (Escala de Autoconcepto desde Terapia Ocupacional, y la Medida de Desempeño Ocupacional Canadiense) estableciendo su posible relación. Método: Diseño Mixto, Tipo Exploratorio, Descriptivo, Correlacional, Corte Transversal. Población: Adolescentes de las Fundaciones Faro y Crecer en Familia, de las modalidades preventivo, Cae, y Cae Casa de Egreso. Muestra: No Probabilística con Muestreo Intencional. Instrumentos: Escala de Autoconcepto desde Terapia Ocupacional del adolescente en Conflicto con la ley (Bohorquez, D. C. & Vargas, L. E. 2014) y la Medida de Desempeño Ocupacional Canadiense (COPM)

    Corporate Taxes and Firms’ Performance: Evidence from an Emerging Economy

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    Corporate taxes play an important role in a firm’s decision-making as they are part of the cost of capital. Thus, understanding the effect of taxes on the performance of firms in the context of frequent tax reforms, as is the case of Colombia, is of great relevance. We used the meta-frontier stochastic techniques, which allow us to estimate in two steps the technical efficiency of firms within each economic sector and between economic sectors in relation to the set of firms in the country. Then, using quantile regression analysis, we estimate both the effect of corporate taxation on firm performance as well as the effect of efficiency on firms’ tax payments. Results indicate that firms in some economic sectors could be benefiting from better production conditions, and that the most efficient firms within each sector paid more taxes as a share of assets. However, when compared to the meta-frontier, firms with higher efficiency paid less taxes, suggesting differences in the firms’ tax burden across economic sectors

    Pretransplant CMV-Specific T-Cell Immunity But Not Dose of Antithymocyte Globulin Is Associated With Recovery of Specific Immunity After Kidney Transplantation

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    Background This is a prospective, multicenter, observational study in cytomegalovirus (CMV)-seropositive kidney transplant recipients with pretransplant CMV-specific cell-mediated immunity (CMV-CMI) receiving antithymocyte globulin (ATG). We aimed to investigate posttransplant CMV-CMI over time and the impact of the dose-dependent ATG. Methods CMV-CMI was assessed at days +30, +45, +60, and +90 after transplantation with the QuantiFERON-CMV assay. A reactive result (interferon-γ [IFN-γ] ≥ 0.2 IU/mL) indicated a positive CMV-CMI. Results A total of 78 positive CMV-CMI patients were enrolled in the study, of which 59.5% had a positive CMV-CMI at day +30 and 82.7% at day +90. Multivariate logistic regression analysis showed that ATG dose was not associated with positive CMV-CMI at any point. However, pretransplant IFN-γ level (>12 IU/mL vs ≤12 IU/mL) was associated with positive CMV-CMI at day +30 (odds ratio, 12.9; 95% confidence interval, 3.1–53.3; P < .001). In addition, all the patients who did not recover CMV-CMI at day +90 had a pretransplant IFN-γ level ≤12 IU/mL. Conclusions More than half of CMV-seropositive kidney transplant recipients receiving ATG recover (or maintain) CMV-CMI by the first month after transplantation. The pretransplant IFN-γ level, but not the ATG dose, shows a strong association with the kinetics of this recovery

    Consulta médica en población en edad productiva y contaminación atmosférica en bogotá: 2008 y 2010

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    Objetivo Explorar la relación de los actuales niveles de contaminación del aireen la ciudad para material particulado respirable (menor de 10 micras) PM10 y laconsulta médica en población en edad productiva (18 a 65 años).Métodos Se revisaron los datos de la red de monitoreo de calidad del aire de laciudad de Bogotá para los años 2008 y 2010, específicamente, niveles de PM10y los diagnósticos de consultas médicas que fueron realizadas en hospitalespúblicos de la ciudad.Resultados De acuerdo con los resultados reportados por la red de monitoreo decalidad del aire de la ciudad, ha habido una disminución de 8 μg/m3 en el promedioanual de PM10 del año 2008 al año 2010, que equivale a un 11,9 % y aunque elnúmero de consultas por motivos relacionados con contaminación atmosférica,aumentó del 2008 al 2010 en un 58,7 %, al comparar esta cifra con la cifra totalde consultas médicas en cada año, se observa una disminución global de 1,2 %.Conclusiones Se evidencia que una importante proporción de las atencionesmédicas generadas en la ciudad de Bogotá puede estar relacionada con su calidaddel aire y que el conjunto de políticas de control que desde hace algún tiempo sevienen desarrollando en la ciudad han permitido lograr una reducción importanteen los niveles de PM10

    Clinical factors associated with discontinuation of ts/bDMARDs in rheumatic patients from the BIOBADASER III registry

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    Altres ajuts: Spanish Agency of Medicines and Medical Devices (AEMPS); Biogen; Bristol Myers-Squibb (BMS); Celltrion Healthcare; Lilly; Merck; Novartis; Pfizer; Regeneron Pharmaceuticals; Samsung Bioepis.Biologic and targeted synthetic disease-modifying antirheumatic drugs (ts/bDMARDs) play a pivotal role in the treatment of rheumatoid arthritis (RA), psoriatic arthritis (PsA), and ankylosing spondylitis (AS). Persistence of therapy provides an index of a drug's overall effectiveness. The objective of the study was to identify factors associated with discontinuation of ts/bDMARDs in a real-world dataset. The study population comprised patients diagnosed with RA, PsA, and AS included in the BIOBADASER registry for whom follow-up data were available until November 2019. Patient features and treatment data were included in the analysis. The Kaplan-Meier method was used to study survival of the different drugs according to the reason for discontinuation. Factors associated with discontinuation were studied using Cox regression models and bivariate and multivariate analyses. P values of less than 0.05 were regarded as statistically significant. The study population comprised 4,752 patients who received a total of 8,377 drugs, of which 4,411 (52.65%) were discontinued. The Kaplan-Meier curves showed that survival for first-line treatment was greater in all 3 groups (p < 0.001). Patients with RA had a greater risk of discontinuation if they were younger (HR, 0.99; 95% CI 0.99-1.00), if they were receiving anti-TNFα agents (HR, 0.61; 95% CI 0.54-0.70), and if they had more comorbid conditions (HR, 1.09; 95% CI 1.00-1.17). Patients with PsA had a higher risk if they were women (HR, 1.36; 95% CI 1.15-1.62) and if they were receiving other ts/bDMARDs (HR, 1.29; 95% CI 1.05-1.59). In patients with AS, risk increased with age (HR, 1.01; 95% CI 1.00-1.02), as did the number of comorbid conditions (HR, 1.27; 95% CI 1.12-1.45). The factors that most affected discontinuation of ts/bDMARDs were line of treatment, age, type of drug, sex, comorbidity and the year of initiation of treatment. The association with these factors differed with each disease, except for first-line treatment, which was associated with a lower risk of discontinuation in all 3 diseases

    Health status and labor force participation : evidence for urban low and middle income individuals in Colombia

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    This paper analyzes the relationship between individual health status and labor force participation using the first wave of the Colombian Longitudinal Survey. The empirical modeling strategy accounts for the presence of potential endogeneity between these two variables. The results show that there is a positive relationship between health and labor force participation in both directions, indicating that better health is likely to lead to a higher probability of participation in the labor market, but also that individuals who participate in the labor market are more likely to report better health. Interesting differences are uncovered when comparing the results by gender and/or age groups. For instance, for younger females, health status and higher education positively affect the probability of labor participation, whereas having children under the age of 5 and being married reduce their probability of participation. Our findings also highlight the importance of public policy to guarantee good health conditions of the population which could also have a positive impact on labor productivity and consequently on long-run economic growth.info:eu-repo/semantics/publishedVersio

    Acute myocardial infarction as first manifestation of primary antiphospholipid syndrome in a twenty-four years old patient

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    El síndrome antifosfolípido primario usualmente se manifiesta como trombosis venosa profunda, tromboembolismo pulmonar y como evento cerebrovascular en la circulación arterial. Se presenta el caso de un paciente joven previamente sano, con infarto agudo del miocardio como primera manifestación del síndrome antifosfolípido primario.Q4Presentación de casos135-139Primary antiphospholipid syndrome is usually manifested with deep venous thrombosis, pulmonary thromboembolism and arterial thrombosis, including cerebrovascular accidents. We report the case of a previously healthy young patient who suffered an acute myocardial infarction as the first manifestation of a primary antiphospholipid syndrome

    Cognitive radio technology in the UHF band

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    Las empresas de comunicaciones celulares móviles en Colombia requieren mayor recurso espectral para ampliar su portafolio de servicios; sin embargo, no hay frecuencias adicionales para tal fin, no obstante es conocido que existe infrautilización de muchas bandas licenciadas. Por esta razón nuevas tecnologías de radio son estudiadas para su implementación en búsqueda de solucionar este problema, ellas son: Radio Definida por Software (RDS ) [1], Radio Cognición (RC) [2] y Acceso Dinámico al Espectro (ADE) [3]. Estas estrategias proponen movilidad en todo el espectro de las comunicaciones de radio para suplir necesidades y lograr mayor eficiencia en la administración de dicho recurso. Desde esta perspectiva se presenta un estudio de caso para examinar los requisitos que se deben cumplir para la implementación de una red de radio cognitiva en Bogotá, para lo cual se evaluó la posibilidad de migración de las comunicaciones celulares desde sus bandas asignadas a las bandas de televisión UHF, y la coexistencia sin interferencias entre estos 2 servicios. El estudio arrojó viabilidad en dicha migración; sin embargo, la implementación de radio cognitiva compromete voluntades de los operadores y del Ministerio de Tecnologías de la Información y las Comunicaciones de Colombia, y demanda disponibilidad de hardware, software y plataformas de radio flexibles.Mobile cellular communication companies in Colombia require more spectrum resources to expand their portfolio of services. However, additional frequency bands for that particular purpose are scarce, yet it is well known that there are many underutilized licensed bands. Therefore new radio technologies are being studied in order to solve this problem, e.g. Software Defi ned Radio SDR [1] Cognitive Radio CR [2] and Dynamic Spectrum Access DSA [3]. These strategies recommend mobility across the radio spectrum to meet various needs and achieve greater effi ciency when managing such a scarce resource. In this context, a case study is presented in an attempt to examine the requirements that must be met for the implementation of cognitive radio networks in Bogota. The case study includes evaluation for the possibility of migration from cellular communications to cognitive radio since the bands assigned to UltraHigh Frequency UHF television offer possible free-of-interference coexistence between the two services (i.e. Cellular and TV). The study shows feasibility to migration; however, the implementations of cognitive radio need availability of hardware, software and flexible radio platforms

    A multiproxy study distinguishes environmental change from diagenetic alteration in the recent sedimentary record of the inner Cadiz Bay (SW Spain)

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    In this study, we reconstruct the recent environmental evolution of the inner Cadiz Bay using sedimentary records reaching back as far as AD 1700. We report lithological descriptions of the sediments and extensive mineralogical and geochemical analyses. An extraction technique that identifies different Fe phases provides an assessment of diagenetic alteration, which allows an estimation of the original organic matter inputs to the inner Cadiz Bay. Downcore variations in Corg/N ratios, δ13Corg and δ15N are related to changes in organic matter sources and the trophic state of the water column. The downcore records of selected trace metals (e.g. Pb, Zn and Cu) are interpreted to reflect changes in heavy metal pollution in the bay, while records of other elements (e.g. Mn and P) are likely overprinted by diagenetic alteration. Major environmental shifts took place during the 20th century, when the population around Cadiz Bay increased exponentially. Increases in sediment accumulation rates, organic matter inputs and heavy metal contents, in parallel with increases in δ13Corg and δ15N over this period, are interpreted as direct effects of the increasing anthropogenic influence in the area. The results of this study suggest that multiproxy approaches and detailed consideration of diagenetic overprinting are required to reconstruct past environmental conditions from coastal sediments
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