Toshiba GCS

ITESO, A.C

Toshiba Global Commerce

ITESO, A.C

Frequency of visualization of celiac ganglia by endoscopic ultrasound and its potential in assessing neural invasion in patients with pancreatic lesions

AbstractBackgroundCeliac ganglia (CG) can be seen by endoscopic ultrasound; they play an important role in pain management and are a potential site for extrapancreatic tumor neural invasion.AimsTo evaluate the frequency of CG visualization during endoscopic ultrasound examination and to evaluate the feasibility of this technique to identify extrapancreatic tumor neural invasion in patients with pancreatic lesions.MethodsWe retrospectively reviewed all endoscopic ultrasound studies performed between November 2007 and June 2010. Images of the celiac region were presented to an endosonographer, who reported the presence or absence of CG.ResultsWe included 31 cases. CG were identified in 14 (45%) cases. Average size was 10mm (range 4-25mm) by±1mm (range 1-7mm). In 2 cases, fine needle aspiration biopsy was performed and reported nerve cell bodies; in one case malignant cells were seen.ConclusionsCG were identified in 45% of the cases. Fine needle aspiration biopsy can detect unanticipated extrapancreatic tumor neural invasion in pancreatic malignancies

Estrategias de control de las derivas de las estructuras de altura activa. Sistema perimetral fachada rigidizadora

RESUMEN: El tema de esta investigación son las estrategias de rigidización de las edificaciones de gran altura, analizado desde la conceptualización de los sistemas estructurales de Altura Activa. En edificios de gran altura los daños provocados y la sensación de inseguridad por las derivas, consecuencia de cargas importantes como el sismo y la carga de viento obliga a establecer estrategias de control de derivas. Este control de las derivas se hace por métodos que se justifican desde la experiencia y los conocimientos de los ingenieros. En esta monografía se propone la estrategia de sistemas perimetrales de fachada rigidizadora a partir de modelos muy diferentes que permiten un análisis comparativo de los resultados de la deriva. Las variables principales para este estudio son la ubicación estratégica de elementos rigidizadores, en este caso diagonales que trabajan en conjunto con el sistema combinado de muros y pórticos. En la etapa práctica se hicieron cinco modelos, uno de ellos sin diagonales que favorezcan la rigidez lateral. Los otros cuatro modelos se construyen a partir del primero y se comparan los resultados de las derivas para analizar las diferencias porcentuales de deriva de cada uno de ellos. El ejercicio permitió concluir el efecto de estas configuraciones rigidizadoras de fachada y destacó el importante aporte de los muros para el control de las derivas. Palabras clave: Altura Activa, Fachada rigidizadora, Derivas, Sistema combinado, Pórticos con diagonales

Sistema de video-monitoreo remoto para hogares vía celular

Ingeniero (a) ElectrónicoPregrad

La calidad del servicio y su relación con la satisfacción de los usuarios de la secretaría de la Facultad de Ciencias Administrativas y Económicas en la Universidad Técnica de Cotopaxi”

The present investigative work is focused on determining the relationship that exists between the quality of the service with the satisfaction of the users, in the Secretariat of the Faculty of Administrative and Economic Sciences of the Technical University of Cotopaxi, Canton Latacunga, for the purpose it was used a quantitative research methodology with a non-experimental descriptive-correlational design, which is adapted to the research. The techniques that were used were the observation and the survey while the instruments to determine the relationship that exists between variables were the observation sheet and the questionnaires, the latter was applied to the staff and users of the Faculty Secretariat, and it was developed following the "SERVQUAL" tool of five dimensions composed of 20 items of expectations and perceptions, with an aggregate of 7 items from the instrument called "Consumer Satisfaction", finally there is the questionnaire for the staff of the Secretariat with 13 items entitled "Job satisfaction questionnaire s10/12". The study population was 1697 users and the sample was 314, distributed among the staff, teachers, students and external users of the Faculty. As results, it was determined that the quality of service presented a low rating in the elements of reliability, security and tangibles; with the exception of the sensitivity and empathy dimensions, since it showed an impartial result. In relation to user satisfaction, an average rating was obtained, showing that there are opinions that are not inclined for or against the service. Finally, the observation sheet and the questionnaire applied to the staff of the Secretariat showed a high-medium result in terms of environment and job satisfaction, concluding that the expectations expected by users are greater than those received. Finally, it is determined that there is a relationship between the two variables under study.El presente trabajo investigativo está enfocado a determinar la relación que existe entre la calidad del servicio con la satisfacción de los usuarios, en la Secretaría de la Facultad de Ciencias Administrativas y Económicas de la Universidad Técnica de Cotopaxi, Cantón Latacunga, para el efecto se empleó una metodología de investigación cuantitativa con un diseño no experimental de tipo descriptivo – correlacional, que se adapta a la investigación. Las técnicas que se utilizaron fueron la observación y la encuesta mientras que los instrumentos para determinar la relación que existe entre variables fueron la ficha de observación y los cuestionarios, este último se aplicó al personal y a los usuarios de la Secretaría de la Facultad, y se desarrolló siguiendo la herramienta “SERVQUAL” de cinco dimensiones compuestas por 20 ítems de expectativas y percepciones, con un agregado de 7 ítems provenientes del instrumento denominado “Satisfacción de los consumidores”, por último se encuentra el cuestionario para el personal de la Secretaría con 13 ítems titulado “Cuestionario de satisfacción laboral s10/12”. La población de estudio fue de 1697 usuarios y la muestra de 314, distribuidos entre el personal, docentes, estudiantes y usuarios externos de la Facultad. Como resultados se determinó que la calidad de servicio presentó una calificación baja en los elementos de fiabilidad, seguridad y tangibles; con excepción de las dimensiones sensibilidad y empatía ya que demostró un resultado imparcial. Con relación a la satisfacción de los usuarios, se obtuvo una calificación media demostrando que existen opiniones que no se inclinan a favor o en contra del servicio. Por último, la ficha de observación y el cuestionario aplicado al personal de la Secretaría expusieron un resultado alto-medio en cuanto al ambiente y satisfacción laboral, concluyendo que las expectativas esperadas por los usuarios son mayores a las recibidas. Finalmente se determina que si existe una relación entre las dos variables sometidas a estudio

Livelihood Capitals, Income Inequality, and the Perception of Climate Change: A Case Study of Small-Scale Cattle Farmers in the Ecuadorian Andes

The Sustainable Development Goals (SDG) of 2015 identify poverty, growth, and inequality as three key areas of intervention towards the UN 2030 Agenda for human well-being and sustainability. Herein, the predominant objectives are: (a) To determine the poverty groups by quintiles through the cattle income in households of small milk producers; (b) To characterize rural livelihoods by using capital theory; and (c) To assess the perception of climate change (CC) and the willingness to accept adaptation as well as mitigation measures. The current study was performed in communities that are located in the Ecuadorian Andes, where some 178 surveys were conducted with indigenous Kichwa and mestizo heads of households. From the total net income determined, five groups were organized. The Lorenz curve was applied as a general indicator of the relative inequality, as well as the Gini coefficient (G). On the basis of the theory of capital, the human, social, natural, physical, and financial characteristics were determined, and seven variables were considered to evaluate the perception and willingness to accept mitigation and adaptation actions of the given quintiles. The result of the Gini coefficient was 0.52, which indicates that the poorest 20% of the population only receives 3.40% of the income, while the richest 20% of the quintile obtain about 54% of the total income. It is evident that most producers know little about CC, but that they are willing to receive strengthening programs. Therefore, it is essential to establish strategic guidelines from public policy in order to reduce inequality and to improve the social welfare of producers, with a transversal axis in the strengthening of the capacities on the impact, mitigation, and adaptation to CC, as well as the provision of several tools, such as access to climate information

Productive Livestock Characterization and Recommendations for Good Practices Focused on the Achievement of the SDGs in the Ecuadorian Amazon

The increase in livestock production in the Ecuadorian Amazon Region has caused an increase in deforestation and the advance of the agricultural frontier. The aim of the current study was to conduct a socioeconomic and productive characterization in Andean-Amazonian livestock systems in Ecuador. The study area was part of the Sumaco Biosphere Reserve (SBR) and three other zones: low (400 to 700 masl), middle (701 to 1600 masl), and high (701 to 1600 masl). Data were collected from 167 ranching households. There are significant differences (p ≤ 0.001) in the results. It was identified that 56.1% of the producers in the middle zone are indigenous (Kichwa). The largest (p ≤ 0.01) average household size (6.7 household members) and the highest level of household heads without schooling (16%) were found in the same area. Heads of households over 54 years of age were reported throughout the gradient. The largest farms were also found in the middle zone, with an average of 62.3 ha, of which an average of 32.9 ha is native forest, 2.1 ha is agricultural land, and 27.2 ha is cattle pasture. The household economy is driven by a greater investment in livestock in the upper area, and therefore their annual gross income has a high impact on their economy. With these results, this study presents recommendations to achieve the Sustainable Development Goals

Autoencoded DNA methylation data to predict breast cancer recurrence: Machine learning models and gene-weight significance

Breast cancer is the most frequent cancer in women and the second most frequent overall after lung cancer. Although the 5-year survival rate of breast cancer is relatively high, recurrence is also common which often involves metastasis with its consequent threat for patients. DNA methylation-derived databases have become an interesting primary source for supervised knowledge extraction regarding breast cancer. Unfortunately, the study of DNA methylation involves the processing of hundreds of thousands of features for every patient. DNA methylation is featured by High Dimension Low Sample Size which has shown well-known issues regarding feature selection and generation. Autoencoders (AEs) appear as a specific technique for conducting nonlinear feature fusion. Our main objective in this work is to design a procedure to summarize DNA methylation by taking advantage of AEs. Our proposal is able to generate new features from the values of CpG sites of patients with and without recurrence. Then, a limited set of relevant genes to characterize breast cancer recurrence is proposed by the application of survival analysis and a pondered ranking of genes according to the distribution of their CpG sites. To test our proposal we have selected a dataset from The Cancer Genome Atlas data portal and an AE with a single-hidden layer. The literature and enrichment analysis (based on genomic context and functional annota tion) conducted regarding the genes obtained with our experiment confirmed that all of these genes were related to breast cancer recurrence.Ministerio de Economía y Competitividad TIN2014-55894-C2-RMinisterio de Economía y Competitividad TIN2017-88209-C2-2-

Caracterización fisicoquímica y microbiológica de residuos orgánicos generados en una plaza de mercado de Bogotá

The generation of waste is a problem that affects the population at a global and local level, which is why the search for alternative use has become a recurring source of study in recent decades. Taking into account that approximately 9 million plant waste is generated in Colombia, that the marketplaces in Bogotá are one of the largest generators of this type of waste and that the strategies for its use are scarce, this study has proposed the preliminary physicochemical and microbiological characterization of organic waste generated in a market place, with the aim of establishing biotechnological alternatives for its use. The characterization was carried out on six different types of waste, collected from the Restrepo marketplace - Bogotá D.C. Atthe physicochemical level, the percentage of moisture, ash, nitrogen, and proteins was determined. For the microbiological evaluation, the count of total, amylolytic, cellulolytic, ligninolytic, lipolytic and proteolytic bacteria was performed. It was found that the percentage of humidity of the waste was between 64.1209%misand 89.3089%, that of ashes between 0.4614% and 1.6517%, that of nitrogen was from 0.0976% to 0.2375% and that of proteins from 0.6098% to 1.4845%. The count for total mesophilic bacteria was 3.7x108 CFU / g. Lipolytic bacteria had the highest concentration (2.3x108 CFU / g), while proteolytic bacteria had the lowest count (1.3x108 CFU / g). Of the bacteria isolated from the residues, 24 proteolytic, 11 cellulolytic and 4 amylolytic strains were selected.La generación de residuos es una problemática que afecta la población a nivel mundial y local, razón por la cual la búsqueda de alternativas de aprovechamiento se ha convertido en las últimas décadas en una fuente recurrente de estudio. Teniendo en cuenta que en Colombia se generan aproximadamente 9 millones de residuos vegetales, que las plazas de mercado en Bogotá son uno de los mayores generadores de este tipo de residuos y que las estrategias para su aprovechamiento son escasas, en este estudio se ha propuesto la caracterización preliminar fisicoquímica y microbiológica de los residuos orgánicos generados en una plaza de mercado, con el ánimo de establecer alternativas biotecnológicas para su aprovechamiento. La caracterización se realizó en seis tipos de residuos diferentes, recolectados de la plaza de mercado del Restrepo – Bogotá D.C. A nivel fisicoquímico se determinó el porcentaje de humedad, cenizas, nitrógeno y proteínas. Para la evaluación microbiológica se realizó el recuento de bacterias totales, amilolíticas, celulolíticas, ligninolíticas, lipolíticas y proteolíticas. Se encontró que el porcentaje de humedad de los residuos estuvo entre 64,1209% y 89,3089%, el de cenizas entre 0,4614% y 1,6517%, el de nitrógeno fue de 0,0976% a 0,2375% y el de proteínas de 0,6098% a 1,4845%. El recuento para las bacterias mesófilas totales fue de 3,7x108 UFC/g. Las bacterias lipolíticas presentaron la mayor concentración (2,3x108 UFC/g), mientras que las proteolíticas presentaron el menor un recuento (1,3x108 UFC/g). De las bacterias aisladas a partir de los residuos se seleccionaron 24 cepas proteolíticas, 11 celulolíticos y 4 amilolíticas