Experiencia de usuario omnicanal en el sector de la moda

Este trabajo parte de la necesidad de conocer acerca de la estrategia omnicanal en el mercado minorista colombiano, teniendo en cuenta que en esta era, con continuos avances tecnológicos, el consumidor ha cambiado su proceso de compra y exige una experiencia consistente, personalizada, y única. Los consumidores pueden estar en contacto con una marca a través de dos o más canales al mismo tiempo, y durante todo su proceso de compra puede interactuar con ella diez o más veces. Con el fin de entender mejor la situación, se realizaron entrevistas semiestructuradas y a profundidad a 16 consumidores de vestuario de marcas de moda ubicadas en la ciudad, donde se identificaron cuatro etapas del proceso de compra: búsqueda, comparación, compra y poscompra, relevantes en la experiencia omnicanal. Además, por medio de varios conceptos abordados en esta investigación de tipo exploratorio, se identificó cualitativamente cuáles son las características y etapas de la experiencia de compra del consumidor de vestuario en Medellín, cuáles son los puntos de contacto del consumidor con la marca y cuáles son las particularidades del proceso de decisión de compra en un entorno omnicanal. Con los hallazgos, los comercios minoristas, las áreas de mercadeo y quienes están a cargo de la entrega del servicio al usuario pueden construir estrategias que contribuyan a ofrecer experiencias consistentes, coherentes y óptimas para los distintos usuarios, que se traduzcan en mejores relaciones con el consumidor, un excelente servicio y mayores ventas.This work starts from the need to know about the Omnichannel strategy in the Colombian retail market, taking into account that in this era, with continuous technological advances, the consumer has changed his purchasing process and demands a consistent, personalized, and unique experience. Consumers can be in contact with a brand through two or more channels at the same time, and throughout their purchase process they can interact with the brand 10 or more times. In order to understand better the situation, semi-structured, and detailed interviews were conducted with 16 fashion label consumers located in the city of Medellin, where 4 stages of the purchase process were identified: search, comparison, purchase and post purchase, all highly relevant to the omnichannel experience. In addition, through various concepts addressed in this exploratory research, it was qualitatively identified what are the characteristics and stages of the consumer’s experience of shopping clothes in Medellin, what are the consumer’s points of contact with the brand, and what are the particularities of the purchase decision process in an Omnichannel environment. Thanks to the collected findings, retailers, marketing areas, and those in charge of delivering the service to the user will be able to build strategies that contribute to give consistent, cohesive and optimal experiences for different users, which translate into better consumer relationships, an excellent service and increased sales

La uveítis, comportamiento clínico epidemiológico en Pinar del Río

Introducción: la uveítis es la forma principal de inflamación ocular y puede estar asociada a diferentes etiologías. Constituyen una causa de deterioro visual y de ceguera.Objetivos: determinar el comportamiento clínico-epidemiológico de la uveítis en Pinar del Río.Material y método: se realizó una investigación longitudinal, prospectiva, aplicada y descriptiva en los pacientes, que acudieron a consulta de Uveítis del Hospital General Abel Santamaría Cuadrado, de la Provincia Pinar del Río, durante el período de abril-septiembre de 2014.  El universo estuvo constituido por la totalidad de pacientes que acudieron a consulta, a los que se les diagnóstico uveítis (58), coincidiendo esta con la muestra. Para el análisis y elaboración de los datos obtenidos, se resumieron en cuadros estadísticos.  El procesamiento estadístico fue mediante técnicas de estadística descriptiva, utilizando el sistema Epi Info y los resultados se muestran en tablas y figuras, utilizando el método porcentual.Resultados: predominaron los pacientes en las edades comprendidas entre los 31 y 50 años de edad, con ligero predominio del sexo masculino, color de la piel blanca, en la población rural. Fue más frecuente la uveítis anterior, de forma aguda, con resolución del cuadro en menos de 3 meses. Predominó la forma no granulomatosa, unilateral, idiopática. Las principales complicaciones asociadas al proceso inflamatorio fueron: la hipertensión ocular y las sinequias posteriores. Conclusiones: valorar adecuadamente las manifestaciones clínicas y complicaciones que acompañan la uveítis permiten realizar un diagnóstico y tratamiento correcto de esta peculiar enfermedad ocular

Validation, comparison, and combination of algorithms for automatic detection of pulmonary nodules in computed tomography images: The LUNA16 challenge

Automatic detection of pulmonary nodules in thoracic computed tomography (CT) scans has been an active area of research for the last two decades. However, there have only been few studies that provide a comparative performance evaluation of different systems on a common database. We have therefore set up the LUNA16 challenge, an objective evaluation framework for automatic nodule detection algorithms using the largest publicly available reference database of chest CT scans, the LIDC-IDRI data set. In LUNA16, participants develop their algorithm and upload their predictions on 888 CT scans in one of the two tracks: 1) the complete nodule detection track where a complete CAD system should be developed, or 2) the false positive reduction track where a provided set of nodule candidates should be classified. This paper describes the setup of LUNA16 and presents the results of the challenge so far. Moreover, the impact of combining individual systems on the detection performance was also investigated. It was observed that the leading solutions employed convolutional networks and used the provided set of nodule candidates. The combination of these solutions achieved an excellent sensitivity of over 95% at fewer than 1.0 false positives per scan. This highlights the potential of combining algorithms to improve the detection performance. Our observer study with four expert readers has shown that the best system detects nodules that were missed by expert readers who originally annotated the LIDC-IDRI data. We released this set of additional nodules for further development of CAD systems

¡El pueblo no se rinde en la pandemia!

El 2020 estuvo marcado por el número de medidas restrictivas emitidas para enfrentar la pandemia del Covid-19[1], fortalecer y preparar el sistema de salud nacional y proteger la salud de los colombianos. Además de la evidente crisis en el sistema de salud, dada su incapacidad para atender un número significativo de ciudadanos, las medidas de confinamiento adoptadas por las autoridades nacionales, regionales y municipales produjeron una crisis social y económica nunca antes vista. Amplios sectores de la sociedad colombiana se quedaron sin empleo o fuente de ingresos. En este sentido, la privación de recursos para el sostenimiento de las familias fue extendida a varios estratos del país. Las carencias económicas para cubrir las necesidades básicas de los hogares colombianos se sintieron tanto en los sectores populares, como en las clases medias y profesionales del país

Comparing algorithms for automated vessel segmentation in computed tomography scans of the lung: the VESSEL12 study

The VESSEL12 (VESsel SEgmentation in the Lung) challenge objectively compares the performance of different algorithms to identify vessels in thoracic computed tomography (CT) scans. Vessel segmentation is fundamental in computer aided processing of data generated by 3D imaging modalities. As manual vessel segmentation is prohibitively time consuming, any real world application requires some form of automation. Several approaches exist for automated vessel segmentation, but judging their relative merits is difficult due to a lack of standardized evaluation. We present an annotated reference dataset containing 20 CT scans and propose nine categories to perform a comprehensive evaluation of vessel segmentation algorithms from both academia and industry. Twenty algorithms participated in the VESSEL12 challenge, held at International Symposium on Biomedical Imaging (ISBI) 2012. All results have been published at the VESSEL12 website http://vessel12.grand-challenge.org. The challenge remains ongoing and open to new participants. Our three contributions are: (1) an annotated reference dataset available online for evaluation of new algorithms; (2) a quantitative scoring system for objective comparison of algorithms; and (3) performance analysis of the strengths and weaknesses of the various vessel segmentation methods in the presence of various lung diseases.Rudyanto, RD.; Kerkstra, S.; Van Rikxoort, EM.; Fetita, C.; Brillet, P.; Lefevre, C.; Xue, W.... (2014). Comparing algorithms for automated vessel segmentation in computed tomography scans of the lung: the VESSEL12 study. Medical Image Analysis. 18(7):1217-1232. doi:10.1016/j.media.2014.07.003S1217123218

Convergent genetic and expression data implicate immunity in Alzheimer's disease

Background Late–onset Alzheimer's disease (AD) is heritable with 20 genes showing genome wide association in the International Genomics of Alzheimer's Project (IGAP). To identify the biology underlying the disease we extended these genetic data in a pathway analysis. Methods The ALIGATOR and GSEA algorithms were used in the IGAP data to identify associated functional pathways and correlated gene expression networks in human brain. Results ALIGATOR identified an excess of curated biological pathways showing enrichment of association. Enriched areas of biology included the immune response (p = 3.27×10-12 after multiple testing correction for pathways), regulation of endocytosis (p = 1.31×10-11), cholesterol transport (p = 2.96 × 10-9) and proteasome-ubiquitin activity (p = 1.34×10-6). Correlated gene expression analysis identified four significant network modules, all related to the immune response (corrected p 0.002 – 0.05). Conclusions The immune response, regulation of endocytosis, cholesterol transport and protein ubiquitination represent prime targets for AD therapeutics

ECMO for COVID-19 patients in Europe and Israel

Since March 15th, 2020, 177 centres from Europe and Israel have joined the study, routinely reporting on the ECMO support they provide to COVID-19 patients. The mean annual number of cases treated with ECMO in the participating centres before the pandemic (2019) was 55. The number of COVID-19 patients has increased rapidly each week reaching 1531 treated patients as of September 14th. The greatest number of cases has been reported from France (n = 385), UK (n = 193), Germany (n = 176), Spain (n = 166), and Italy (n = 136) .The mean age of treated patients was 52.6 years (range 16–80), 79% were male. The ECMO configuration used was VV in 91% of cases, VA in 5% and other in 4%. The mean PaO2 before ECMO implantation was 65 mmHg. The mean duration of ECMO support thus far has been 18 days and the mean ICU length of stay of these patients was 33 days. As of the 14th September, overall 841 patients have been weaned from ECMO support, 601 died during ECMO support, 71 died after withdrawal of ECMO, 79 are still receiving ECMO support and for 10 patients status n.a. . Our preliminary data suggest that patients placed on ECMO with severe refractory respiratory or cardiac failure secondary to COVID-19 have a reasonable (55%) chance of survival. Further extensive data analysis is expected to provide invaluable information on the demographics, severity of illness, indications and different ECMO management strategies in these patients

Juxtaposing BTE and ATE – on the role of the European insurance industry in funding civil litigation

One of the ways in which legal services are financed, and indeed shaped, is through private insurance arrangement. Two contrasting types of legal expenses insurance contracts (LEI) seem to dominate in Europe: before the event (BTE) and after the event (ATE) legal expenses insurance. Notwithstanding institutional differences between different legal systems, BTE and ATE insurance arrangements may be instrumental if government policy is geared towards strengthening a market-oriented system of financing access to justice for individuals and business. At the same time, emphasizing the role of a private industry as a keeper of the gates to justice raises issues of accountability and transparency, not readily reconcilable with demands of competition. Moreover, multiple actors (clients, lawyers, courts, insurers) are involved, causing behavioural dynamics which are not easily predicted or influenced. Against this background, this paper looks into BTE and ATE arrangements by analysing the particularities of BTE and ATE arrangements currently available in some European jurisdictions and by painting a picture of their respective markets and legal contexts. This allows for some reflection on the performance of BTE and ATE providers as both financiers and keepers. Two issues emerge from the analysis that are worthy of some further reflection. Firstly, there is the problematic long-term sustainability of some ATE products. Secondly, the challenges faced by policymakers that would like to nudge consumers into voluntarily taking out BTE LEI

Search for stop and higgsino production using diphoton Higgs boson decays

Results are presented of a search for a "natural" supersymmetry scenario with gauge mediated symmetry breaking. It is assumed that only the supersymmetric partners of the top-quark (stop) and the Higgs boson (higgsino) are accessible. Events are examined in which there are two photons forming a Higgs boson candidate, and at least two b-quark jets. In 19.7 inverse femtobarns of proton-proton collision data at sqrt(s) = 8 TeV, recorded in the CMS experiment, no evidence of a signal is found and lower limits at the 95% confidence level are set, excluding the stop mass below 360 to 410 GeV, depending on the higgsino mass