179 research outputs found

    Mecanismos de control para el cumplimiento de los objetivos en las organizaciones

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    Es de conocimiento general que para que las organizaciones puedan cumplir con su estrategia y generar utilidades, deben tener procesos que funcionen de manera óptima y estar constantemente actualizados acorde a la normativa, las nuevas tendencias y los cambios culturales y sociales. Esto no basta por sí solo, dado que al trabajar con seres humanos la tendencia al error es algo habitual y debe haber herramientas que controlen y corrijan las fallas que se presenten con el fin de ser más eficientes y prevenir riesgos, de la misma manera que es necesario hacer un seguimiento constante de la posición de la empresa y sus resultados para tomar decisiones que le permitan seguir avanzando; por lo que se hace necesario implementar mecanismos que le permitan a las compañías controlar de manera rigurosa sus procesos y seguir avanzando. Este proyecto de investigación pretende integrar algunas hipótesis enfocadas en los mecanismos de control que los gobiernos corporativos deben implementar en las organizaciones para mantener un adecuado funcionamiento de sus procesos, generar utilidades y crear valor.Universidad Libre Seccional Pereira - Ciencias Económicas, Administrativas y Contables - Especialización en Alta GerenciaIt is common knowledge that in order for organizations to fulfill their strategy and generate profits, they must have processes that work optimally and be constantly updated according to regulations, new trends and cultural and social changes. This is not enough on its own, since working with human beings the tendency to make mistakes is common and there must be tools to control and correct the failures that occur in order to be more efficient and prevent risks, in the same way that it is necessary to constantly monitor the position of the company and its results to make decisions that allow it to move forward; so it is necessary to implement mechanisms that allow companies to rigorously control their processes and move forward. This research project aims to integrate some hypotheses focused on the control mechanisms that corporate governments should implement in organizations to maintain a proper functioning of their processes, generate profits and create value

    Dysplasia in oral lichen planus: relevance, controversies and challenges. A position paper

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    Background: Patients with oral lichen planus (OLP) have an increased risk of oral cancer. For this reason, OLP is classified as an oral potentially malignant disorder. However, the precise personal (or individual) risk is unknown. Recent meta-analytical studies have reported that dysplastic OLP may transform to cancer in around 6% of cases, while the rate of transformation is lower (<1.5%) in non-dysplastic cases. The presence of epithelial dysplasia has emerged as the most powerful indicator for assessing cancer risk in oral potentially malignant disorders in routine practice. However, the general acceptance of epithelial dysplasia as an accompanying histologic feature in OLP is subject to great controversy. Many pathologists consider the presence of dysplasia as a criterion to exclude OLP when routinely reporting on this disease. This practice, widespread among oral pathology professionals, has resulted in the underestimation of the potential for malignancy of OLP. Material and Methods: A review of the literature was carried out in order to critically analyze the relevance, controversies and challenges encountered across the diagnosis of epithelial dysplasia in OLP. Results: 12 studies have been published examining dysplastic changes in OLP, reporting figures ranging from 0.54% to 25% of cases with dysplasia in the first diagnostic biopsy. The diagnosis of dysplasia in the OLP poses an additional difficulty due to the fact that the affected oral epithelium per se develops changes related to autoimmune aggression. Among the most frequent histological features of OLP that develops dysplasia are basal cell hyperplasia with basaloid appearance, loss of basal cells polarity, cellular and nuclear pleomorphism and irregular stratification. Conclusions: Epithelial dysplasia should not be considered an exclusion criterion for OLP; its evaluation requires experienced pathologists in this field

    A Review of A Priori Defined Oxidative Balance Scores Relative to Their Components and Impact on Health Outcomes

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    Oxidative Balance Scores (OBSs) are tools that have emerged to evaluate the global balance of individuals’ oxidation—reduction status. The aim was to compare OBSs available in the literature regarding their characteristics and associations with chronic diseases in epidemiological studies. Studies that developed OBSs were searched in PubMed until August 2018. A total of 21 OBSs were identified. These OBSs presented di erent scoring schemes and di erent types of anti- and pro-oxidant components, including dietary factors (dietary intake and/or nutrient biomarkers), lifestyle factors, and medications. Most OBSs were based on over 10 components, and some included only dietary factors. Few considered weighted components in the score. Only three OBSs were validated as potential surrogates of oxidative balance through inflammation and OS-related biomarkers. Notably, all the OBSs were associated—to a varying degree—with a reduced risk of cardiovascular diseases, chronic kidney disease, colorectal adenomas, and di erent cancer types (colorectal and breast cancer), as well as with all-cause and cancer-related mortality. For other outcomes, e.g., prostate cancer, contradictory results were reported. In summary, there is a great heterogeneity in the definition of OBSs. Most studies are concordant in supporting that excessive OS reflected by a lower OBS has deleterious e ects on health. Unified criteria for defining the proper OBSs, valuable to gauge OS-related aspects of the diet and lifestyle that may lead to adverse health outcomes, are needed.This research was co-funded by the Health Research Fund (FIS), Acción Estratégica en Salud (AES), of the Spanish Ministry of Economy and Competitiveness, grant number PI12/00002, and the European Regional Development Fund (ERDF)

    Electrochemical sensors modified with combinations of sulfur containing phthalocyanines and capped gold nanoparticles: A study of the influence of the nature of the interaction between sensing materials

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    Producción CientíficaVoltametric sensors formed by the combination of a sulfur-substituted zinc phthalocyanine (ZnPcRS) and gold nanoparticles capped with tetraoctylammonium bromide (AuNPtOcBr) have been developed. The influence of the nature of the interaction between both components in the response towards catechol has been evaluated. Electrodes modified with a mixture of nanoparticles and phthalocyanine (AuNPtOcBr/ZnPcRS) show an increase in the intensity of the peak associated with the reduction of catechol. Electrodes modified with a covalent adduct-both component are linked through a thioether bond-(AuNPtOcBr-S-ZnPcR), show an increase in the intensity of the oxidation peak. Voltammograms registered at increasing scan rates show that charge transfer coefficients are different in both types of electrodes confirming that the kinetics of the electrochemical reaction is influenced by the nature of the interaction between both electrocatalytic materials. The limits of detection attained are 0.9 × 10−6 mol∙L−1 for the electrode modified with the mixture AuNPtOcBr/ZnPcRS and 1.3 × 10−7 mol∙L−1 for the electrode modified with the covalent adduct AuNPtOcBr-S-ZnPcR. These results indicate that the establishment of covalent bonds between nanoparticles and phthalocyanines can be a good strategy to obtain sensors with enhanced performance, improving the charge transfer rate and the detection limits of voltammetric sensors.Ministerio de Economía, Industria y Competitividad - Fondo Europeo de Desarrollo Regional (projects RTI2018-097990-B-I00 / CTQ2017-87102-R)Junta de Castilla y Leon - Fondo Europeo de Desarrollo Regional (project VA275P18

    POLÍTICAS PARA COMBATIR A LOS GRUPOS ARMADOS POSDESMOVILIZACIÓN EN LOS GOBIERNOS DE ÁLVARO URIBE VÉLEZ Y JUAN MANUEL SANTOS

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    El artículo discute la coherencia entre las políticas públicas formuladas y las acciones efectivamente desarrolladas por los gobiernos de Uribe y Santos, con el fin de combatir a los grupos armados que surgen después de la desmovilización paramilitar. Para cumplir este objetivo, en primer lugar, se revisan las políticas de seguridad de los respectivos gobiernos, así como las diferentes concepciones sobre la naturaleza de los grupos posdesmovilización. En segundo lugar, se analizan las acciones adelantadas por cada gobierno, a partir de una revisión de prensa donde se registran las noticias que contienen información sobre el accionar del Estado en contra de las mencionadas estructuras.The article discusses the coherence between public policies formulated and actions effectively developed to combat armed groups which emerged after demobilization of paramilitary groups by the Uribe and Santos governments. In order to accomplish the foregoing, first, security policies of the respective governments as well as the different conceptions concerning the nature of post-demobilization groups are reviewed and then, actions taken by each of the governments are analyzed on the basis of media reports memorializing information concerning related State action

    Descripción de índices basados en la adhesión al patrón dietético mediterráneo: una revisión

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    Introduction: diet quality indexes are tools are aimed at quantifying the compliance to a defined dietary pattern. These indexes are a combined measure of dietary factors (food groups, foods, nutrients and ratios) and/or lifestyles factors. The Mediterranean Diet (MD) is a dietary pattern characterized by their positive effects against chronic diseases. There have been many indexes proposed for the assessment of this dietary pattern. An evaluation of their composition and health benefits is therefore convenient. Objective: the objective is to evaluate indexes of adherence to the MD with regard to their definition, methodological issues and validation as reported in epidemiological studies. Methods: we searched in PubMed for studies that developed MD Indexes up to October 2014. Results: a total number of 22 indexes were identified, with differences regarding the number of components (7-28), scoring (0, 1, 2, 3, 4, 5, 8 or 10, in case of compliance), range (0-100) and type of components (which could be food groups/foods or their combination, with nutrients). Among the positive components, fruits and vegetables were the most common and meats, among the negative components. There were also differences with regard to their composition and evaluation (e.g. criteria of moderate alcohol consumption), as well as with the scoring system (in medians, terciles or established servings).Conclusions: this review suggests that since there is great heterogeneity in the definition of MD. It would be therefore convenient to establish more clearly the components to be included and to establish commonly defined criteria to quantify this dietary pattern.Introducción: los índices de calidad la de dieta son herramientas que sirven para cuantificar el cumplimiento de un patrón dietético definido. Estos índices son una medida combinada de factores dietéticos (grupos alimenticios, alimentos, nutrientes y ratios) y/o estilos de vida. La dieta mediterránea (DM) es un patrón dietético que se caracteriza por sus efectos positivos contra ciertas enfermedades crónicas. Existen numerosos índices propuestos para la valoración de este patrón dietético. Es por lo tanto conveniente una evaluación de su composición y sus efectos sobre la salud. Objetivo: el objetivo es evaluar los índices de adhesión al patrón dietético mediterráneo en cuanto a su definición, aspectos metodológicos y validación en estudios epidemiológicos. Métodos: se buscaron en PubMed estudios que desarrollaron índices de DM hasta octubre de 2014. Resultados: se identificaron un total de 22 índices, con diferencias en cuanto al número de componentes (7-28), puntuación (0, 1, 2, 3, 4, 5, 8 o 10, en el caso de cumplimiento), rango (0-100) y tipo de componentes (grupos de alimentos/alimentos o su combinación con nutrientes). Entre los componentes positivos, los más comunes fueron frutas y verduras, y carnes entre los negativos. También hubo diferencias con respecto a su composición y evaluación (p. ej. criterios de consumo moderado de alcohol), así como con el sistema de puntuación (en medianas, terciles o raciones establecidas). Conclusiones: esta revisión sugiere que existe una gran heterogeneidad en la definición de DM. Sería por tanto apropiado establecer con mayor claridad los componentes que deben incluirse, así como definir criterios comunes para cuantificar este patrón dietético.This work was supported by the Spanish Ministry of Health. Health Research Fund. PI12/00002, co-funded ERDF and It’s part of the doctoral thesis named: “Relación entre ingesta y acumulación de productos de Maillard de la dieta con el status endógeno antioxidante/oxidativo/ inflamatorio individual (“Indice de balance oxidativo”) y con la calidad de la dieta

    Improving the performance of electrochemical sensors by means of synergy. Combinations of gold nanoparticles and phthalocyanines

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    Producción CientíficaVoltammetric sensors chemically modified with combinations of two electrocatalytic materials: tetraoctylammonium bromide capped gold nanoparticles (AuNPNBr) and a sulphur containing zinc phthalocyanine derivative (ZnPcRS) are reported. The electrocatalytic effects in the detection of catechol have been analyzed in sensors obtained by direct mixing (AuNPNBr/ZnPcRS) and in sensors modified with an adduct where both components are linked covalently (AuNPNBr-S-ZnPcR). Results demonstrate that the nature of the interaction between both components modifies the electrocatalytic properties. The AuNPNBr/ZnPcRS mixture improves the electron transfer rate of the catechol reduction, with limits of detection of 10−6 M. The covalent adduct AuNPNBr-S-ZnPcR enhances the response rate of the oxidation of the catechol with limits of detection of 10−7 M.Ministerio de Economía y Empresa-FEDER (AGL2015-67482-R)Junta de Castilla y Leon - FEDER (VA-032U13)Junta de Castilla y Leon, (grant BOCYL-D-4112015-9

    Role of young university professionals in organizations. A Europe/Latin-America comparative study

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    Licencia Creative Commons Attribution 3.0 Unported (CC BY 3.0)[ES] Las exigencias de los puestos de trabajo están evolucionando, y en la actualidad demandan cambios en las competencias profesionales y personales. Estos cambios afectan a aspectos actitudinales, operativos, estratégicos y organizacionales. En este artículo se analiza el papel desarrollado por los profesionales universitarios en las organizaciones en donde trabajan. Para ello se analiza una amplia muestra de jóvenes graduados universitarios de Europa y Latinoamérica. Los resultados muestran que existen entornos económicos y socio-culturales diferentes y que los graduados adaptan su actividad a estos entornos.[EN] Job requirements have evolved, asking for changes in required professional and personal competencies. These changes affect attitudinal, operative, strategic and organizational aspects. In this paper we analyze the role developed by young university graduates in the organizations where they work. For this purpose a sample of young university graduates in Europe and Latin America are analyzed. The results show the existence of different economic and socio-cultural environment and how young graduates adapt its activity to these environments.Grisales Del Rio, AM.; Carrión García, A.; Mora Ruiz, JG. (2015). El Rol de los Jóvenes Profesionales Universitarios en las Organizaciones. Estudio Comparativo Europa/ Latinoamérica. Scientia Et Technica. 20(2):146-154. http://hdl.handle.net/10251/63804S14615420

    Oxidative Balance Scores (OBSs) Integrating Nutrient, Food and Lifestyle Dimensions: Development of the NutrientL-OBS and FoodL-OBS

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    This research was co-funded by the Health Research Found (FIS), Accion Estrategica en Salud (AES), of the Spanish Ministry of Economy and Competitiveness, grant number PI12/00002, and the European Regional Development Fund (ERDF).Oxidative Balance Scores (OBS) are tools that allow us to assess the individual's antioxidant state by ranking both antioxidant and pro-oxidant components of dietary and lifestyle factors. Our aim was to develop novel OBSs accounting for either the global supply of nutrient antioxidants in the diet, or the intake of antioxidant-rich foods, in combination with lifestyle factors. Pro-oxidant factors were also considered. Within two centers of the Spanish European Prospective Investigation into Cancer and Nutrition (EPIC) study, EPIC-Granada and EPIC-Gipuzkoa (N = 14,756 participants), we developed the Nurient, Food and Lifestyle OBS (NutrientL-OBS and FoodL-OBS), and their simplified versions (solely with dietary or lifestyle factors, the Nutrient-OBS, Food-OBS and L-OBS). Their antioxidant potential was evaluated considering their relationship with: (i) 20 scores of adherence to the Mediterranean Diet (MD); and, (ii) 25 biomarkers of antioxidant nutrients (ascorbic acid, beta-carotene, etc.), inflammation (CRP, TNF-alpha, etc.) and oxidative stress (uric acid), among 210 participants. Spearman correlation and multivariate linear regression analyses were applied to analyze these associations. Some statistically significant relationships were encountered between the NutrientL-OBS and the FoodL-OBS with the MD scores, and with ascorbic acid (per one-unit increase in OBS: beta = 0.012 and 0.015; p = 0.022 and 0.008, respectively) and CRP (per one-unit increase in both OBS: beta = -0.02; p = 0.02); the latter appeared to be restricted to the OBS ' s lifestyle components. In conclusion, the NutrientL- and FoodL-OBSs and their sub-versions are related to antioxidant-rich dietary patterns and to biomarkers of antioxidant nutrient intake and inflammation, supporting that these tools are valid to assess the individual ' s oxidative/antioxidant status.Health Research Found (FIS), Accion Estrategica en Salud (AES), of the Spanish Ministry of Economy and Competitiveness PI12/00002European Commissio

    Characterizing Meat- and Milk/Dairy-like Vegetarian Foods and Their Counterparts Based on Nutrient Profiling and Food Labels

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    Vegetarian foods are plant-based (PB) foods, often perceived as healthier foods than animalbased (AB) foods. The objective of this study was to analyze the nutritional quality of a set of PB foods (meat, milk and dairy products) marketed in Spain, and to compare their nutrient profiles with respect to some AB counterparts. Nutritional information per 100 g or mL, ingredients, and nutritional declarations, as well as the Nutri-Score, NOVA, and Eco-Score of each food were collected from Open Food Facts. Differences in the nutrient compositions between PB foods and their counterparts, and between the different groups of PB foods, were assessed at a 5% significance level. A total of 544 PB foods and 373 AB foods were identified. Overall, PB foods had a higher median content of fiber and carbohydrates, but a lower amount of proteins (except PB “meat” analogues: 14 g) and saturated fats (except PB “cheese alternatives”: 12.5 g), than the AB counterparts (p < 0.05). PB “milk alternatives”, particularly oat “milk”, showed a higher median content of total carbohydrates (8 g) and sugars (5.5 g) compared to cow milks (4.7 g carbohydrates/sugars, on average; p < 0.001). PB “meat alternatives” also had a significantly higher value of carbohydrates (9 g) than AB meats (2 g, on average; p < 0.001). PB foods were mostly classified as Nutri-Score A and B (86%). However, more than half of them were of NOVA groups 3 and 4. Thus, there is a great diversity of PB meat and milk/dairy product alternatives on the Spanish market. Despite being products of good nutritional quality compared to AB foods, they also carry drawbacks that could have an impact on nutritional health
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