Estado del arte del diseño de ambientes virtuales de aprendizaje con sensibilidad a las variables culturales

This paper shows a state-of-the-art is pertinent to understanding the design, development, and operation of usable information systems. In short, social informatics is an interdisciplinary and transdisciplinary field that belongs to a larger body of socioeconomic research concerned with information and communications technology.Social information technology investigates the relations between systems development on the one hand, and decision making, power structures, legislation, learning effects, organizational aspects, education and media influence on the other. However, social information technology also takes careful consideration to specify contexts and situations.Esta revisión del estado del arte es pertinente para el entendimiento del diseño y desarrollo de los sistemas de información. Es decir la informatica social es campo interdisciplinario y transdisciplinario que pertenece a un gran cuerpo de investigación socioeconomico preocupado de las tecnologías de la información y la comunicación.La tecnologia de la información social investiga las relaciones entre los sistemas de desarrollo por un lado y la toma de decisiones, estructuras de poder, legislación, efectos del aprendizaje, aspectos organizacionales, educación e influencia de los medios por el otro lado. Como siempre la tecnología de la información social es importante considerar contextos especificos y situaciones

Estado del arte del diseño de ambientes virtuales de aprendizaje con sensibilidad a las variables culturales

This paper shows a state-of-the-art is pertinent to understanding the design, development, and operation of usable information systems. In short, social informatics is an interdisciplinary and transdisciplinary field that belongs to a larger body of socioeconomic research concerned with information and communications technology.Social information technology investigates the relations between systems development on the one hand, and decision making, power structures, legislation, learning effects, organizational aspects, education and media influence on the other. However, social information technology also takes careful consideration to specify contexts and situations.Esta revisión del estado del arte es pertinente para el entendimiento del diseño y desarrollo de los sistemas de información. Es decir la informatica social es campo interdisciplinario y transdisciplinario que pertenece a un gran cuerpo de investigación socioeconomico preocupado de las tecnologías de la información y la comunicación.La tecnologia de la información social investiga las relaciones entre los sistemas de desarrollo por un lado y la toma de decisiones, estructuras de poder, legislación, efectos del aprendizaje, aspectos organizacionales, educación e influencia de los medios por el otro lado. Como siempre la tecnología de la información social es importante considerar contextos especificos y situaciones

COMPUESTOS BIOACTIVOS Y PROPIEDADES SALUDABLES DEL TAMARINDO (Tamarindus indica L)/ BIOACTIVE COMPOUNDS AND HEALTH PROPERTIES OF TAMARIND (Tamarindus indica L)

El tamarindo (Tamarindus Indica L.) es un fruto procedente de África, cuya producción a nivel mundial se encuentra entre 400 y 500 mil ton, mientras que México produce alrededor de 39 mil ton anuales; este fruto es reconocido en la tradición popular por sus propiedades antioxidantes, posiblemente relacionadas con la presencia de compuestos bioactivos, principalmente compuestos polifenólicos. Al fruto de tamarindo se le han brindado distintas aplicaciones, desde medicinales hasta de ingrediente en la industria alimentaria. La presente revisión tiene la finalidad de recopilar y mostrar algunos de los estudios recientes de los efectos benéficos que se han reportado para la pulpa de este fruto. En los últimos tiempos se han acumulado evidencias de que algunos compuestos polifenólicos ingeridos con la dieta habitual pueden encontrarse asociados con la fibra dietética, por lo que en este trabajo se incluye la cuantificación de los compuestos polifenólicos y la actividad antioxidante en la pulpa del fruto, además de la cuantificación de los compuestos fenólicos que se encuentran potencialmente asociados a la fibra dietética del fruto. Esta evaluación fue realizada por medio de métodos in vitro. Esta sencilla pero novedosa revisión podrá brindar información adicional a la literatura que se encuentra disponible respecto a este fruto, el cual contiene fitoquímicos con bioactividad/ ABSTRACT Tamarind (Tamarindus indica L.) is a fruit from Africa with a worldwide production between 400 and 500 thousand ton, with 39 000 ton produced in Mexico; traditionally it is recognized for its antioxidant properties, possibly related to the presence of bioactive compounds, mainly polyphenols. Tamarind fruit has been given different applications from medicinal as well as an ingredient in the food industry. The present review aims to collect and display some of the recent studies of the beneficial effects that have been reported for the pulp of this fruit. However, in recent times there has been enough evidence which show that some polyphenols ingested with the daily diet may be associated with dietary fiber, so in this review the quantification of polyphenols and antioxidant activity in the fruit pulp was included in addition to the quantification of the phenolic compounds that are potentially associated with dietary fiber of the fruit. This evaluation was performed by in vitro methods. This simple but novel information may provide additional information to the literature that is available around the fruit, which contains phytochemicals with bioactivity

Ajuste cultural mediante la aceptación tecnológica en un entorno tecnosocial

Currently in Colombia, the programs developed to facilitate citizens appropriation of the Information and Communication Technologies (ICT) concentrate efforts on to increasing and to improving the ICT infrastructure (hardware-software). This tendency might be observed in the results presented by the government about ICT politics which register the number of given computers, the increase on information transmission/reception speed or the number of Internet connections enabled in the country, among others. However, the access to the Information Society, the knowledge construction and the development of cognitive processes result to be non reachable complex phases with just having more technology. This work proposes the consideration of variables linked to the cultural environment of the regions and the knowledge of its relationships, with the purpose of having a key factor to predict the technological acceptance and its impact in the culture of the inhabitants. If the multidimensional complex culture is not considered to implement the ICT in the society, the digital gap will increasingly be bigger and it will increase the inequality in the education and in the use of the technological resources giving at the end a bigger social inequity and poverty

Antioxidant activity and prevention of pork meat lipid oxidation using traditional Mexican condiments (pasilla dry pepper, achiote, and mole sauce)

Antioxidant activity and prevention of pork meat lipid oxidation using traditional Mexican condiments (pasilla dry pepper, achiote, and mole sauce

Nitrogen determination on tomato (Lycopersicon esculentum Mill.) seedlings by color image analysis (RGB)

In order to investigate the effectiveness of a new method based on color image analysis and the Minolta SPAD-502 chlorophyll meter for the diagnosis of nitrogen deficiencies of tomato seedlings, a field experiment was conducted. In this study, five levels of nitrogen fertilization were established so as to induce nitrogen deficiencies in tomato seedlings. Thirty-five days after sowing, total nitrogen was evaluated by laboratory analysis. The chlorophyll index was determined using a SPAD-502 chlorophyll meter. Also, color images were taken with a digital camera; the color images were processed in MATLAB in order to determine the averages of the red color, green color and the blue color. The relationships between variables were analyzed by linear regressions and a one way analysis of variance (p < 0.01). Results showed that color image analysis correlated better with the status of plant nitrogen than the SPAD. From the color image analysis, the red and blue colors were more accurate predictors of nitrogen status on plants with R2 above 0.89. Color image analysis provides an accurate and quick way for nitrogen estimation and can contribute for early detection of nitrogen deficiency in tomato seedlings. The SPAD method is not a reliable way to estimate the nitrogen status on tomato seedlings.Keywords: Color image analysis (RGB), chlorophyll meter, nitrogen deficiencyAfrican Journal of Biotechnology Vol. 9(33), pp. 5326-5332, 16 August, 201

Quantificação da cultura no contexto da sociedade da informação

Culture is understood as a multidimensional construct which includes facets of artistic and spiritual expressions and intellectual and emotional values as well. The interpretation of culture has been an important factor in recent years to understand the relationships and the phenomena of social issues. This interpretation requires a model which implies the dimensions that make up the culture in order to facilitate their quantitative study and to support the popular qualitative descriptions. It is necessary to consider also the recognition of the remarkable influence of the information in the globalized society and the rapid advancement of the Information and Communication Technologies (ICT) and the increasing dependence of humanity on it. This work presents a recount of some of the models used for culture quantification, with the aim of giving support to an electronic government's architecture (Government to Citizens relationship), based on culture creation and refinement processes by means of the derived citizens behavior from technological acceptance approaches.La cultura es entendida como un constructo multidimensional que abarca facetas que van desde expresiones artísticas y espirituales hasta valores intelectuales y afectivos que distinguen a una comunidad de otra. Su interpretación ha sido un factor de especial importancia en los últimos años en el escenario mundial para el entendimiento de las relaciones y los fenómenos sociales. Por ello requiere de un modelo que indique las dimensiones que la conforman y que permiten abordar su estudio de forma cuantitativa, para dar soporte a las descripciones cualitativas ampliamente realizadas. Igualmente es necesario agregar a esta interpretación un elemento que surge de reconocer la notable influencia de la información en la sociedad globalizada, de evidenciar el acelerado avance de las Tecnologías de la Información y la Comunicación (TIC) y la creciente dependencia que está creando la humanidad con ellas. Este trabajo presenta un recuento de algunos de los modelos utilizados para la cuantificación de la cultura, con el objetivo de dar soporte a una arquitectura de gobierno electrónico orientado al ciudadano (G2C), basada en estrategias de creación y refinamiento de cultura, mediante el comportamiento ciudadano derivado de criterios de aceptación tecnológica.A cultura é entendida como um conceito multidimensional abrangendo aspectos que vão desde expressões artísticas e espirituais até os valores intelectuais e afetivos que distinguem uma comunidade de outra. Sua interpretação foi um fator particularmente importante nos últimos anos no cenário mundial para a compreensão das relações e fenômenos sociais. Portanto, exige de um modelo que indique as dimensões que a constituem e que permitem enfrentar seu estudo de forma quantitativa, para apoiar as descrições qualitativas amplamente realizadas. Também é necessário adicionar um elemento a essa interpretação proveniente do reconhecimento da influência significativa da informação na sociedade globalizada, de demonstrar a rápida evolução das Tecnologias da Informação e Comunicação (TIC) e a dependência crescente que a humanidade está criando com elas. Este trabalho apresenta um resumo de alguns dos modelos usados para a quantificação da cultura, a fim de apoiar uma arquitetura de governo eletrônico orientado para o cidadão (G2C) com base em estratégias de criação e refinamento da cultura, através do comportamento dos cidadãos derivado de critérios de aceitação tecnológica

Large trees drive forest aboveground biomass variation in moist lowland forests across the tropics, Global

ABSTRACT Aim Large trees (d.b.h. Ն 70 cm) store large amounts of biomass. Several studies suggest that large trees may be vulnerable to changing climate, potentially leading to declining forest biomass storage. Here we determine the importance of large trees for tropical forest biomass storage and explore which intrinsic (species trait) and extrinsic (environment) variables are associated with the density of large trees and forest biomass at continental and pan-tropical scales. Location Pan-tropical. Methods Aboveground biomass (AGB) was calculated for 120 intact lowland moist forest locations. Linear regression was used to calculate variation in AGB explained by the density of large trees. Akaike information criterion weights (AICcwi) were used to calculate averaged correlation coefficients for all possible multiple regression models between AGB/density of large trees and environmental and species trait variables correcting for spatial autocorrelation. Results Density of large trees explained c. 70% of the variation in pan-tropical AGB and was also responsible for significantly lower AGB in Neotropical [287.8 (mean) Ϯ 105.0 (SD) Mg ha ). Pan-tropical variation in density of large trees and AGB was associated with soil coarseness (negative), soil fertility (positive), community wood density (positive) and dominance of wind dispersed species (positive), temperature in the coldest month (negative), temperature in the warmest month (negative) and rainfall in the wettest month (positive), but results were not always consistent among continents. Main conclusions Density of large trees and AGB were significantly associated with climatic variables, indicating that climate change will affect tropical forest biomass storage. Species trait composition will interact with these future biomass changes as they are also affected by a warmer climate. Given the importance of large trees for variation in AGB across the tropics, and their sensitivity to climate change, we emphasize the need for in-depth analyses of the community dynamics of large trees. bs_bs_banner Global Ecology and Biogeography, (Global Ecol. Biogeogr.