131 research outputs found

    ORGANIZATIONAL BEHAVIOR AS A FACTOR OF COMPETITIVENESS IN FAMILY COMPANIES OF THE SERVICE SECTOR IN TIJUANA, B.C., MEXICO

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    Purpose: The present study contemplates an investigation to know the relationship that exists between the organizational behavior as the factor of competitiveness in the familiar companies of the service sector in Tijuana, B.C.; the fact that companies have an organizational climate not only benefits the human resource itself but also the company conjointly as it generates profits, while raising the quality of human resources and forging an organization with strengths that position it into the market as a competitive company Methodology: 168 representative surveys were carried out on the employees of the family service sector companies registered in the Mexican Business Information System (SIEM), corresponding to Tijuana in Baja California, Mexico. The survey was conducted in the last eight months of 2016 and the first four months of 2017. The quantitative research is applied through survey applications, by questionnaires to the employees of family companies in the service sector to obtain the results. Main Findings: The factors of autonomy, teamwork, support, communication, pressure, recognition, equity, innovation, perception of the organization, motivation, remuneration, training and development, physical and cultural environment, vision, general satisfaction, promotion and career have a direct impact on organizational behavior, as factors of competitiveness in Tijuana, BC, Mexico Implications/Applications: Organizational behavior is important for family businesses and due to the difficult environment faced by family businesses in order to be competitive in our country and in global markets; a good option for owners is to invest in organizational behavior as a market strategy

    Editor for creating and applying computerise surveys

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    The parallel development of the psychometric assessments and the computer technologies determined a big revolution regarding the construction and the application of psychological and educational tests. This report describes a computerized system that allows researchers to creating, applying, and tabulating surveys and paper instruments in an automatized way. Many studies describe the use of this tool, highlighting its main characteristics. This system can be considered a useful tool, since it permits to input data with higher precision and no need for previous codifications. Further, it allows researchers to know the latency period from the answer to each and every item. The prospects about new versions of the system stress on: extending the number of measured topics; creating automatic corrections systems; managing data via internet; and selecting the most valid items to measure each matter or specific groups of persons

    Oxidative stress, lipid metabolism, and neurotransmission in freshwater snail (Pomacea patula) exposed to a water-accommodated fraction of crude oil

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    Background. Crude oil is a super mixture of chemical compounds and is commonly found in aquatic environments. The tegogolo (Pomacea patula Baker, 1922) is a Mexican freshwater snail endemic to Lake Catemaco in Veracruz; currently, however, its distribution has expanded to many freshwater ecosystems that suffer the impact of crude oil spills and oil byproducts like fuels. Goals. To assess a series of biomarkers involved in oxidative stress, neurotransmission, and fatty acid metabolism in tegogolos exposed to the water-accommodated fraction (WAF) of Maya crude oil (MCO). Methods. Tegogolo specimens were exposed to WAF of MCO obtained from loads of 0.1, 1, 10 and 100 mg/L. We evaluated ROS ( O2 -* and H2O2), oxidative stress (TBARS and RC=O), enzymes involved in antioxidant defense (SOD, CAT, and GPx), some enzymes involved in neurotransmission (AChE, GDA, and CbE activities), and biomarkers of fatty acids metabolism (fatty acids levels and AOX activity). Results. Clear biomarkers responses were observed only in some tissues. ROS were clearly higher than controls in the foot, head, and kidney; however, others biomarkers of oxidative stress remain statistically unchanged. SOD response was irregular with respect to controls and treatments. In contrast, CAT (foot) and GPx (foot and intestine) were the more active enzymes and their activities were higher than in controls. The responses of some enzymes involved in neurotransmission suggest that compensation mechanisms exist between AChE and GDA in the foot and head. Fatty acids metabolism increased with exposure to WAF; however, these types of biomarkers seem unsuitable for monitoring the toxic effects produced by WAF at low environmental concentrations. Conclusions. We can conclude that under the exposure conditions discussed herein, the tegogolos showed acclimation to WAF of Maya crude oil by complex mechanisms.Background. Crude oil is a super mixture of chemical compounds and is commonly found in aquatic environments. The tegogolo (Pomacea patula Baker, 1922) is a Mexican freshwater snail endemic to Lake Catemaco in Veracruz; currently, however, its distribution has expanded to many freshwater ecosystems that suffer the impact of crude oil spills and oil byproducts like fuels. Goals. To assess a series of biomarkers involved in oxidative stress, neurotransmission, and fatty acid metabolism in tegogolos exposed to the water-accommodated fraction (WAF) of Maya crude oil (MCO). Methods. Tegogolo specimens were exposed to WAF of MCO obtained from loads of 0.1, 1, 10 and 100 mg/L. We evaluated ROS ( O2-* and H2O2), oxidative stress (TBARS and RC=O), enzymes involved in antioxidant defense (SOD, CAT, and GPx), some enzymes involved in neurotransmission (AChE, GDA, and CbE activities), and biomarkers of fatty acids metabolism (fatty acids levels and AOX activity). Results. Clear biomarkers responses were observed only in some tissues. ROS were clearly higher than controls in the foot, head, and kidney; however, others biomarkers of oxidative stress remain statistically unchanged. SOD response was irregular with respect to controls and treatments. In contrast, CAT (foot) and GPx (foot and intestine) were the more active enzymes and their activities were higher than in controls. The responses of some enzymes involved in neurotransmission suggest that compensation mechanisms exist between AChE and GDA in the foot and head. Fatty acids metabolism increased with exposure to WAF; however, these types of biomarkers seem unsuitable for monitoring the toxic effects produced by WAF at low environmental concentrations. Conclusions. We can conclude that under the exposure conditions discussed herein, the tegogolos showed acclimation to WAF of Maya crude oil by complex mechanisms.Background. Crude oil is a super mixture of chemical compounds and is commonly found in aquatic environments. Thetegogolo (Pomacea patula Baker, 1922) is a Mexican freshwater snail endemic to Lake Catemaco in Veracruz; currently,however, its distribution has expanded to many freshwater ecosystems that suffer the impact of crude oil spills and oilbyproducts like fuels. Goals. To assess a series of biomarkers involved in oxidative stress, neurotransmission, and fatty acidmetabolism in tegogolos exposed to the water-accommodated fraction (WAF) of Maya crude oil (MCO). Methods. Tegogolospecimens were exposed to WAF of MCO obtained from loads of 0.1, 1, 10 and 100 mg/L. We evaluated ROS ( O2-* and H2O2),oxidative stress (TBARS and RC=O), enzymes involved in antioxidant defense (SOD, CAT, and GPx), some enzymes involvedin neurotransmission (AChE, GDA, and CbE activities), and biomarkers of fatty acids metabolism (fatty acids levels and AOXactivity). Results. Clear biomarkers responses were observed only in some tissues. ROS were clearly higher than controls inthe foot, head, and kidney; however, others biomarkers of oxidative stress remain statistically unchanged. SOD response wasirregular with respect to controls and treatments. In contrast, CAT (foot) and GPx (foot and intestine) were the more activeenzymes and their activities were higher than in controls. The responses of some enzymes involved in neurotransmission suggestthat compensation mechanisms exist between AChE and GDA in the foot and head. Fatty acids metabolism increasedwith exposure to WAF; however, these types of biomarkers seem unsuitable for monitoring the toxic effects produced by WAFat low environmental concentrations. Conclusions. We can conclude that under the exposure conditions discussed herein,the tegogolos showed acclimation to WAF of Maya crude oil by complex mechanisms

    Desarrollo de Propuesta de Modelo de Negocio Digital: ZAR.ESA WALLET.

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    Las tecnologías de la información y comunicación han cambiado la vida de las personas y la forma de hacer negocios. Hoy en día, se acuerdan contratos, se adoptan decisiones, se facilita la vida cotidiana, se hacen transacciones de bienes y servicios a un menor costo de tiempo y dinero. En El Salvador se tiene muy claro que, con el comercio electrónico, se puede alcanzar nuevos mercados, operar a casi toda hora, todos los días, y llegar a más consumidores específicos o segmentados. También es necesario tener en cuenta los obstáculos para que se lleve a cabo el comercio electrónico. Determinado uno de los principales obstáculos en las transacciones electrónicas es la desconfianza por parte de los usuarios; el comercio electrónico necesita un nivel elevado de confianza por parte de los sujetos involucrado para poder desarrollarse y continuar expandiéndose tanto a nivel nacional y también internacional, debido a las diferentes culturas, situación que requiere de mucha atención y de acciones que cambien esta percepción de los usuarios. El emprendimiento ZAR.ESA Wallet, es una implementación de una billetera electrónica puesta a completa disposición de los usuarios de transacciones electrónicas, a manera de facilitar los pagos, a cualquier hora y en cualquier lugar sin perder tiempo. Dicha billetera permite el uso de monedas bitcoin y criptomonedas, por tanto, los usuarios pueden escoger según sea su conveniencia. La principal manera de obtener ingreso a través de la billetera ZARESA WALLET, es por medio de las comisiones que se recibirán en las transacciones que realicen los usuarios, definiendo un monto fijo de cobro sin importar la cantidad de dinero que se vaya a manejar

    Las Najadaceae de Cuba

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    This is a study of the family Najadaceae in Cuba. The presence of Najas marina, N. guadalupensis f. floridana and N. arguta var. arguta is confirmed, and the area of distribution of N. guadalupensis f. guadalupensis and N. wrightiana is extended. A general key, illustrations and distribution maps are included.Estudio de la familia Najadaceae en Cuba. Se confirma la presencia de Najas marina, N. guadalupensis f.floridana y N. arguta var. arguta, y se amplía la distribución de N. guadalupensis f. guadalupensis y N. wrightiana. Se presenta una clave general, ilustraciones y mapas de distribución

    Caracterización del Vehículo Eléctrico Aries C2, de la Empresa MINGHONG

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    El incremento porcentual de los vehículos de propulsión eléctrica en la matriz automotora a nivel mundial, y su necesaria introducción en Cuba impone la necesidad de disponer de toda la información técnica detallada para el soporte y mantenimiento de los sistemas eléctricosde los mismos, debido a que muchos de esos servicios dejan de ser aplicados por la falta de documentación. Por ese motivo, en el presente trabajo se define como objetivo principal la realización de una descripción técnica completa del funcionamiento de los sistemas eléctricos del vehículo Minghong, modelo Aries C2, así como los principales diagramas esquemáticos. Los aspectos detallados abarcan las etapas de potencia, sus correspondientes sistemas de control, y las interconexiones entre estos. De las mediciones realizadas, se presentaron varias formas de onda obtenidas en el cargador y el controlador del motor. Con estos resultados, se dispuso de un conocimiento detallado del funcionamiento de este medio de transporte, para futuras reparaciones, no solo en el modelo mencionado, sino en otros que circulan en el país basados en una tecnología similar

    Temporal patterns of active fire density and its relationship with a satellite fuel greenness index by vegetation type and region in Mexico during 2003-2014

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    Background: Understanding the temporal patterns of fire occurrence and their relationships with fuel dryness is key to sound fire management, especially under increasing global warming. At present, no system for prediction of fire occurrence risk based on fuel dryness conditions is available in Mexico. As part of an ongoing national-scale project, we developed an operational fire risk mapping tool based on satellite and weather information. Results: We demonstrated how differing monthly temporal trends in a fuel greenness index, dead ratio (DR), and fire density (FDI) can be clearly differentiated by vegetation type and region for the whole country, using MODIS satellite observations for the period 2003 to 2014. We tested linear and non-linear models, including temporal autocorrelation terms, for prediction of FDI from DR for a total of 28 combinations of vegetation types and regions. In addition, we developed seasonal autoregressive integrated moving average (ARIMA) models for forecasting DR values based on the last observed values. Most ARIMA models showed values of the adjusted coefficient of determination (R2 adj) above 0.7 to 0.8, suggesting potential to forecast fuel dryness and fire occurrence risk conditions. The best fitted models explained more than 70% of the observed FDI variation in the relation between monthly DR and fire density. Conclusion: These results suggest that there is potential for the DR index to be incorporated in future fire risk operational tools. However, some vegetation types and regions show lower correlations between DR and observed fire density, suggesting that other variables, such as distance and timing of agricultural burn, deserve attention in future studiesAntecedentes: Una adecuada planificación del manejo del fuego requiere de la comprensión de los patrones temporales de humedad del combustible y su influencia en el riesgo de incendio, particularmente bajo un escenario de calentamiento global. En la actualidad en México no existe ningún sistema operacional para la predicción del riesgo de incendio en base al grado de estrés hídrico de los combustibles. Un proyecto de investigación nacional actualmente en funcionamiento, tiene como objetivo el desarrollo de un sistema operacional de riesgo y peligro de incendio en base a información meteorológica y de satélite para México. Este estudio pertenece al citado proyecto Resultados: Se observaron en el país distintas tendencias temporales en un índice de estrés hídrico de los combustibles basado en imágenes MODIS, el índice “dead ratio” (DR), y en las tendencias temporales de un ìndice de densidad de incendios (FDI), en distintos tipos de vegetación y regiones del país. Se evaluaron varios modelos lineales y potenciales, incluyendo términos para la consideración de la autocorrelación temporal, para la predicción de la densidad de incendios a partir del índice DR para un total de 28 tipos de vegetación y regiones. Se desarrollaron además modelos estacionales autoregresivos de media móvil (ARIMA en inglés) para el pronóstico del índice DR a partir de los últimos valores observados. La mayoría de los modelos ARIMA desarrollados mostraron valores del coeficiente de determinación ajustado (R2 adj) por encima de 0.7 to 0.8, sugiriendo potencial para ser empleados para un pronóstico del estrés hídrico de los combustibles y las condiciones de riesgo de ocurrencia de incendio. Con respecto a los modelos que relacionan los valores mensuales de DR con FDI, la mayoría de ellos explicaron más del 70% de la variabilidad observada en FDI. Conclusiones: Los resultados sugirieron potencial del índice DR para ser incluido en futuras herramientas operacionales para determinar el riesgo de incendio. En algunos tipos de vegetación y regiones se obtuvieron correlaciones más reducidas entre el índice DR y los valores observados de densidad de incendios, sugiriendo que el papel de otras variables tales como la distancia y el patrón temporal de quemas agrícolas debería ser explorado en futuros estudiosFunding for this work was provided by CONAFOR-CONACYT Project 252620 “Development of a Fire Danger System for Mexico.” This work was also cofinanced by the Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria and European Social Fund (Dr. E. Jiménez grant)S
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