Condiciones para que perduren las tiendas por departamentos en el sector retail colombiano

Esta investigación busca identificar los componentes que permiten que las organizaciones del segmento tiendas por departamento del sector retail en Colombia perduren; para ello analiza la definición alcanzada por la Universidad del Rosario en 2009 y la contrasta con estudios teóricos anteriores y posteriores a esta, entrevistas en profundidad a algunos de los actores del segmento en el país, e información sobre el tema publicada en medios de comunicación. A partir de la triangulación de estos datos se concluye que, en tanto el sector tiene las mismas problemáticas y criterios de evaluación de cualquier empresa, le son aplicables los mismos criterios de perdurabilidad.

Valores de referencia de hemoglobinemia en población Colombiana de 1 a 18 años por género y altitud

Introducción: La concentración de hemoglobina total es uno de los indicadores más comúnmente medidos en sangre. Sin embargo, sus valores varían de acuerdo con la altitud, sexo y edad, entre otros, por lo cual es necesario contar con valores de referencia ajustados para estas condiciones con el fin de establecer adecuadamente el diagnóstico tanto de anemia como eritrocitosis. El objetivo de este estudio fue establecer los valores de referencia para hemoglobinemia en la población colombiana entre 1 y 18 años, de acuerdo con la edad, sexo y altitud del lugar de residencia. Materiales y métodos: A partir de la encuesta nacional de salud (ENDS) y de situación nutricional (ENSIN) Colombia 2010, se analizaron los valores de hemoglobinemia provenientes de los individuos de 1 a 18 años, tras haber excluido a los sujetos con condiciones inflamatorias (proteína C reactiva >1,2 mg/ml) y con depleción de las reservas de hierro (ferritina sérica <22 μg/l), de acuerdo con la edad, sexo y altitud del lugar de residencia, utilizando el paquete estadístico IBM SPSS Statistics 21.0. Resultados y discusión: En la población seleccionada se encontró una prevalencia de anemia ferropénica entre 0% y 50%; una prevalencia de anemia no ferropénica de 0% a 18,8%. Se observaron incrementos significativos en la hemoglobinemia de acuerdo con edad, sexo y altitud a partir de 500 msnm, y para estos últimos los valores encontrados fueron superiores a los establecidos por la Organización Mundial de Salud. También se encontraron diferencias significativas en la hemoglobinemia de acuerdo con la etnia.

Integración de las técnicas de mercadeo y la relación estratégica comunitaria

Con el siguiente proyecto se pretende explicar cómo se realiza la integración de las técnicas de mercadeo y la relación estratégica comunitaria, debido a que las organizaciones utilizan conceptos comunitarios. Se analizan las principales estrategias de mercadeo como marketing mix, geomarketing, mercadeo de servicios, mercadeo relacional y mercadeo social. Se explican las técnicas de mercadeo como mercadeo directo, diferenciación de productos, segmentación de mercado, investigación de mercados, inteligencia de mercados, optimización de canales de distribución y comercio electrónico. Adicionalmente, se exponen las estrategias comunitarias como coaliciones comunitarias, organizaciones de base, liderazgo comunitario y empoderamiento. La metodología implementada para este proyecto es de tipo teórico-conceptual y reúne los aportes de varios documentos científicos de diversas áreas del conocimiento. Las fuentes de información, conceptos y teorías se seleccionan según el criterio del investigador en función de las posibilidades descriptivas de la integración propuesta. En esta investigación se concluye que las técnicas y las estrategias de mercadeo permiten la comunicación entre las organizaciones y las comunidades. Esto posibilita que exista participación entre ambas partes y es un factor clave para el surgimiento de la relación estratégica comunitaria. Se recomienda realizar investigaciones posteriores sobre la relación estratégica comunitaria, aplicadas a organizaciones y comunidades.

TIMESAFE

TimeSafe es una aplicación móvil diseñada especialmente para las tiendas Carulla, la cual tiene como finalidad introducir una nueva modalidad de compra en el mercado. A diferencia de las formas tradicionales de compra, TimeSafe le permitirá al usuario estar presente en el supermercado para hacer sus compras, dándole la autonomía para registrar sus productos, pero el principal diferenciador será que el usuario tendrá la posibilidad de realizar el pago online, sin tener la necesidad de pasar por una registradora.

Use of informal mobile telephony in low income households in Colombia

El acceso a la telefonía móvil en Colombia evidencia ciertas particularidades con respecto a otros países. En Colombia surgió una nueva alternativa de comunicación que consistía en la venta de minutos de celular en las calles y en pequeños negocios durante los primeros años de ésta década. En este documento se analizan las principales características de quienes usan esta modalidad de comunicación con base en una encuesta dirigida a usuarios y no usuarios de bajos ingresos. Se usa un modelo probabilístico para explicar las características de las personas que lo usan y se encuentra que las personas que están en la modalidad de contrato prepago y que viven en ciudades pequeñas tienen una mayor probabilidad de usar esta alternativa de comunicación. De otro lado se encuentra que quienes están con el operador dominante tienden a usar este servicio también de una forma más notoria. Estos resultados parecen indicar que los diferenciales de precios entre las llamadas off-net y on-net así como entre prepago y postpago son los que alimentaron el surgimiento de esta actividad

Caracterización de los hábitos alimentarios en población pediátrica de cuatro instituciones escolares

Introducción: La obesidad infantil ha venido en aumento en los últimos años y Colombia no es ajena a esta problemática. Uno de los lugares para intervención son los planteles educativos, en los cuales los escolares son quienes escogen sus alimentos. En el presente estudio se pretendió caracterizar los hábitos alimentarios de una población pediátrica en cuatro instituciones educativas, con el fin de conocer las prioridades infantiles en cuanto a la escogencia de los alimentos, y por ende generar recomendaciones. Metodología: Se realizó un estudio descriptivo multicéntrico que presenta los resultados de encuestas dirigidas a escolares entre 8 y 18 años, usuarios de tiendas escolares. Se realizó un análisis descriptivo de acuerdo a las preferencias de alimentación por institución, por género y por edad entre otros. Resultados: Se incluyeron un total de 512 escolares. La distribución por género y edad fue similar en las cuatro instituciones educativas. Entre los alimentos de preferencia predominaron los alimentos empaquetados, pizza, helados y en menor proporción las frutas. En cuanto a las bebidas predominó la gaseosa y té en botella. Entre las razones para escoger los alimentos predominó “el sabor” seguido de la “facilidad y rapidez” para su consumo; y la principal razón para no escoger los alimentos fue el precio. Discusión: Es necesario hacer intervención desde una temprana edad para generar hábitos de alimentación saludable y equilibrada, al igual que se debería tener un programa de detección de hábitos alimentarios inadecuados en las instituciones escolares para así poder combatirlos.

OpenSearch-geo: the simple standard for geographic web search engines

When publishing information on the web, one expects it to reach all the people that could be interested in. This is mainly achieved with general purpose indexing and search engines like Google which is the most used today. In the particular case of geographic information (GI) domain, exposing content to mainstream search engines is a complex task that needs specific actions. In many occasions it is convenient to provide a web site with a specially tailored search engine. Such is the case for on-line dictionaries (wikipedia, wordreference), stores (amazon, ebay), and generally all those holding thematic databases. Due to proliferation of these engines, A9.com proposed a standard interface called OpenSearch, used by modern web browsers to manage custom search engines. Geographic information can also benefit from the use of specific search engines. We can distinguish between two main approaches in GI retrieval information efforts: Classical OGC standardization on one hand (CSW, WFS filters), which are very complex for the mainstream user, and on the other hand the neogeographer’s approach, usually in the form of specific APIs lacking a common query interface and standard geographic formats. A draft ‘geo’ extension for OpenSearch has been proposed. It adds geographic filtering for queries and recommends a set of simple standard response geographic formats, such as KML, Atom and GeoRSS. This proposal enables standardization while keeping simplicity, thus covering a wide range of use cases, in both OGC and the neogeography paradigms. In this article we will analyze the OpenSearch geo extension in detail and its use cases, demonstrating its applicability to both the SDI and the geoweb. Open source implementations will be presented as well

Alterações nas queixas subjetivas de memória e na escala de depressão geriátrica em adultos e idosos em Portugal estão associadas a um suplemento alimentar

A perda de memória é uma das principais queixas entre a população idosa. Reivindicada para melhorar a função cognitiva e de fácil obtenção em farmácias e dietéticas, a suplementação com fosfolípidos produziu resultados mistos em vários estudos. Um grupo de adultos e idosos saudáveis (n = 522) com idade 65,84 ± 10,74 anos, e com um nível de escolaridade de 7,90 ± 4,90 anos participaram do estudo. Os participantes foram submetidos a Avaliação Breve do Estado Mental (ABEM), Escala de Queixas de Memória (EQM) e Escala de Depressão Geriátrica (EDG). Três indivíduos apresentaram disfunção cognitiva, 505 queixas de memória apresentadas e 257 estavam acima do ponto de corte para a EDG. Subsequentemente, um grupo de mulheres (n = 17) utilizaram a suplementação com fosfolípidos durante 4 semanas. Após o período de suplementação, foi observada uma diminuição nos valores médios de EQM e EDG. A suplementação de fosfolípidos, ao longo de 4 semanas reduziu significativamente os valores EQM (p <0,05) neste grupo de mulheres.

A Influência da Inteligência Emocional (IE) nos Comportamentos de Cidadania Organizacional (CCO) dos trabalhadores do Intermarché do Distrito de Leiria: um estudo exploratório

O objetivo desta investigação foi verificar se existia uma relação entre a inteligência emocional e o desempenho dos comportamentos de cidadania organizacional em trabalhadores de Intermarché. Participaram, neste estudo 108 colaboradores de várias lojas de Intermarché do distrito de Leiria (14 do género masculino e 94 do género feminino) com uma média de idades de 33 anos. Os instrumentos utilizados foram os questionários de Medidas Sociodemográficas, de Inteligência Emocional de Rego e Fernandes (2005) e o de Comportamentos de Cidadania Organizacional de Rego (1999). Os resultados demonstraram não haver uma relação condicionante, evidente, entre estas duas variáveis bem como em relação às medidas sociodemográficas.

Lipid metabolism in women

Differences in whole-body lipid metabolism between men and women are indicated by lower-body fat accumulation in women but more marked accumulation of fat in the intra-abdominal visceral fat depots of men. Circulating blood lipid concentrations also show gender-related differences. These differences are most marked in premenopausal women, in whom total cholesterol, LDL-cholesterol and triacylglycerol concentrations are lower and HDL-cholesterol concentration is higher than in men. Tendency to accumulate body fat in intra-abdominal fat stores is linked to increased risk of CVD, metabolic syndrome, diabetes and other insulin-resistant states. Differential regional regulation of adipose tissue lipolysis and lipogenesis must underlie gender-related differences in the tendency to accumulate fat in specific fat depots. However, empirical data to support current hypotheses remain limited at the present time because of the demanding and specialist nature of the methods used to study adipose tissue metabolism in human subjects. In vitro and in vivo data show greater lipolytic sensitivity of abdominal subcutaneous fat and lesser lipolytic sensitivity of femoral and gluteal subcutaneous fat in women than in men. These differences appear to be due to fewer inhibitory alpha adrenergic receptors in abdominal regions and greater a adrenergic receptors in gluteal and femoral regions in women than in men. There do not appear to be major gender-related differences in rates of fatty acid uptake (lipogenesis) in different subcutaneous adipose tissue regions. In visceral fat rates of both lipolysis and lipogenesis appear to be greater in men than in women; higher rates of lipolysis may be due to fewer alpha adrenergic receptors in this fat depot in men. Fatty acid uptake into this depot in the postprandial period is approximately 7-fold higher in men than in women. Triacylglycerol concentrations appear to be a stronger cardiovascular risk factor in women than in men, with particular implications for cardiovascular risk in diabetic women. The increased triacylglycerol concentrations observed in women taking hormone-replacement therapy (HRT) may explain the paradoxical findings of increased rates of CVD in women taking HRT that have been reported from recent primary and secondary prevention trials of HRT.

Alternatives to linear analysis of energy balance data from lactating dairy cows

The current energy requirements system used in the United Kingdom for lactating dairy cows utilizes key parameters such as metabolizable energy intake (MEI) at maintenance (MEm), the efficiency of utilization of MEI for 1) maintenance, 2) milk production (k(l)), 3) growth (k(g)), and the efficiency of utilization of body stores for milk production (k(t)). Traditionally, these have been determined using linear regression methods to analyze energy balance data from calorimetry experiments. Many studies have highlighted a number of concerns over current energy feeding systems particularly in relation to these key parameters, and the linear models used for analyzing. Therefore, a database containing 652 dairy cow observations was assembled from calorimetry studies in the United Kingdom. Five functions for analyzing energy balance data were considered: straight line, two diminishing returns functions, (the Mitscherlich and the rectangular hyperbola), and two sigmoidal functions (the logistic and the Gompertz). Meta-analysis of the data was conducted to estimate k(g) and k(t). Values of 0.83 to 0.86 and 0.66 to 0.69 were obtained for k(g) and k(t) using all the functions (with standard errors of 0.028 and 0.027), respectively, which were considerably different from previous reports of 0.60 to 0.75 for k(g) and 0.82 to 0.84 for k(t). Using the estimated values of k(g) and k(t), the data were corrected to allow for body tissue changes. Based on the definition of k(l) as the derivative of the ratio of milk energy derived from MEI to MEI directed towards milk production, MEm and k(l) were determined. Meta-analysis of the pooled data showed that the average k(l) ranged from 0.50 to 0.58 and MEm ranged between 0.34 and 0.64 MJ/kg of BW0.75 per day. Although the constrained Mitscherlich fitted the data as good as the straight line, more observations at high energy intakes (above 2.4 MJ/kg of BW0.75 per day) are required to determine conclusively whether milk energy is related to MEI linearly or not.

Importance of mycotoxins in food and feed in India

Various food and feed samples including groundnut seed, maize, sorghum, soyabean cake, groundnut cake, cotton cake, poultry feed, buffalo milk, cow milk and milk powders were collected from farmers' fields, farmer's stores, oil millers storage, traders' storage, retail shops and supermarkets. More than 2000 samples were analysed by ELISA and most of the commodities, with the exception of sorghum seed, contained high levels of aflatoxin. Groundnut cake was one of the major cattle feed ingredients in the peri-urban area of Hyderabad (Andhra Pradesh, India) and >75% of the samples contained >100 µg/kg aflatoxin, leading to a high level of aflatoxin M1, in milk samples. Strategies to reduce aflatoxin levels (especially in groundnut) by management interventions at preharvest, harvest and storage, are discussed.

Global iron-dependent gene regulation in Escherichia coli - A new mechanism for iron homeostasis

Organisms generally respond to iron deficiency by increasing their capacity to take up iron and by consuming intracellular iron stores. Escherichia coli, in which iron metabolism is particularly well understood, contains at least 7 iron-acquisition systems encoded by 35 iron-repressed genes. This Fe-dependent repression is mediated by a transcriptional repressor, Fur ( ferric uptake regulation), which also controls genes involved in other processes such as iron storage, the Tricarboxylic Acid Cycle, pathogenicity, and redox-stress resistance. Our macroarray-based global analysis of iron- and Fur-dependent gene expression in E. coli has revealed several novel Fur-repressed genes likely to specify at least three additional iron- transport pathways. Interestingly, a large group of energy metabolism genes was found to be iron and Fur induced. Many of these genes encode iron- rich respiratory complexes. This iron- and Fur-dependent regulation appears to represent a novel iron-homeostatic mechanism whereby the synthesis of many iron- containing proteins is repressed under iron- restricted conditions. This mechanism thus accounts for the low iron contents of fur mutants and explains how E. coli can modulate its iron requirements. Analysis of Fe-55-labeled E. coli proteins revealed a marked decrease in iron- protein composition for the fur mutant, and visible and EPR spectroscopy showed major reductions in cytochrome b and d levels, and in iron- sulfur cluster contents for the chelator-treated wild-type and/or fur mutant, correlating well with the array and quantitative RT-PCR data. In combination, the results provide compelling evidence for the regulation of intracellular iron consumption by the Fe2+-Fur complex.

Export of dissolved organic carbon from an upland peatland during storm events: implications for flux estimates

Most of the dissolved organic carbon (DOC) exported from catchments is transported during storm events. Accurate assessments of DOC fluxes are essential to understand long-term trends in the transport of DOC from terrestrial to aquatic systems, and also the loss of carbon from peatlands to determine changes in the source/sink status of peatland carbon stores. However, many long-term monitoring programmes collect water samples at a frequency (e.g. weekly/monthly) less than the time period of a typical storm event (typically <1–2 days). As widespread observations in catchments dominated by organo-mineral soils have shown that both concentration and flux of DOC increases during storm events, lower frequency monitoring could result in substantial underestimation of DOC flux as the most dynamic periods of transport are missed. However, our intensive monitoring study in a UK upland peatland catchment showed a contrasting response to these previous studies. Our results showed that (i) DOC concentrations decreased during autumn storm events and showed a poor relationship with flow during other seasons; and that (ii) this decrease in concentrations during autumn storms caused DOC flux estimates based on weekly monitoring data to be over-estimated, rather than under-estimated, because of over rather than under estimation of the flow-weighted mean concentration used in flux calculations. However, as DOC flux is ultimately controlled by discharge volume, and therefore rainfall, and the magnitude of change in discharge was greater than the magnitude of decline in concentrations, DOC flux increased during individual storm events. The implications for long-term DOC trends are therefore contradictory, as increased rainfall could increase flux but cause an overall decrease in DOC concentrations from peatland streams. Care needs to be taken when interpreting long-term trends in DOC flux rather than concentration; as flux is calculated from discharge estimates, and discharge is controlled by rainfall, DOC flux and rainfall/discharge will always be well correlated.