Seguridad basada en parámetros sim para entornos de comercio electrónico móvil

Los requerimientos de seguridad son los más exigentes en el dominio del comercio electrónico. Cuando se ha-bla de comercio electrónico móvil los requisitos a nivel de seguridad no solo conservan su nivel de exigencia, sino que se debe mantener un equilibrio entre el grado de seguridad que se requiere y las capacidades de los dispositivos, tanto a nivel hardware como de usabilidad. Estas características exigen el diseño de modelos con un esquema simple de autenticación y autorización transparente para los usuarios, que además garantice la integridad de la información que se intercambia durante cualquier transacción electrónica. Como respuesta a esta necesidad, el Grupo de Interés en el Desarrollo de Aplicaciones Móviles e Inalámbricas W@PColombia, ha desarrollado la plataforma P3SIM con el objeto de brindar las facilidades necesarias para la construcción de aplicaciones móviles seguras basadas en parámetros SIM; a través de un framework, un ambiente de compilación y de simulación como sus principales componentes, la plataforma P3SIM combina las ventajas de identificación que proporciona el módulo SIM con las capacidades que en materia de seguridad ofrecen API como SATSA y JavaCard en el entorno Java ME, una de las plataformas más utilizadas en el desarrollo de aplicaciones para dispositivos móviles. Igualmente, a través del desarrollo de un prototipo aplicado al contexto del comercio elec-trónico móvil, no solo se demuestran las facultades de la plataforma para operar en ambientes seguros sino también su capacidad de adaptación a los requerimientos de seguridad fijados por el entorno.Security requirements are more demanding in the e-commerce domain. However, mobile e -commerce settings not only insist on security requirements, they also require balance between security levels and hardware and usability device ability. These features require designing models having simple authentication and authorisation scheme which also ensures information integrity for each e -transaction. The Mobile and Wireless Applications’ Development Interest Group W@Pcolombia thus developed the P3SIM platform so that mobile applications might include SIM parameter-based security features. The P3SIM platform’s framework and compilation and simulation settings combines the advantages of identification provided by the SIM module with the security features provided by SATSA and Java Card APIs for Java ME environments, one of the most-used platforms for mobile application development. Developing an m-commerce-based prototype not only shows the platform’s ability to operate in secure environments, it also shows its ability to comply with environmental security requirements

Los Batanes: A trap for the Pyrenean wild goat during the Late Pleistocene (Spain)

Los Batanes cave (1025 m.a.s.l.) is a karstic system formed by pressure ducts, near the locality of Biescas in the Upper Gallego Valley (Huesca, Spain). Many fossil remains were retrieved from the cave sediments. The minimum sediment calendar age was determined to be 12.770 ± 60 BP. This date indicates that the deposit was formed before the Late Pleistocene-Early Holocene transition at the Pyrenees. Here we analyze the faunal assemblage of the site that is only conformed by remains of Pyrenean wild goat (Capra pyrenaica pyrenaica), which is a recently extinct subspecies of Iberian wild goat (C. pyrenaica). In the site, 1079 remains of Iberian wild goat have been recovered being one of the most numerous both in minimum number of individuals (MNI) and number of identified specimens (NISP) recovered until now in a natural trap in the Spanish Pyrenees. The population of Los Batanes shows a wide range of ages between juvenile and senile individuals and the MNI estimated from the number of right metatarsus is nine. The taphonomic features indicate that the cave acted as a trap for the goats which inhabited the vicinity of the cave. These goats probably stumbled and fell to the bottom of the pit and they could not get out, dying inside. Due to the origin of the accumulation numerous complete bones have been recovered. These fossil allow us to perform a biometric analysis that indicates that population of Los Batanes is in the range size of other goats from Late Pleistocene of Iberian Peninsula

Role of age and comorbidities in mortality of patients with infective endocarditis

Purpose: The aim of this study was to analyse the characteristics of patients with IE in three groups of age and to assess the ability of age and the Charlson Comorbidity Index (CCI) to predict mortality. Methods: Prospective cohort study of all patients with IE included in the GAMES Spanish database between 2008 and 2015. Patients were stratified into three age groups:<65 years, 65 to 80 years, and = 80 years.The area under the receiver-operating characteristic (AUROC) curve was calculated to quantify the diagnostic accuracy of the CCI to predict mortality risk. Results: A total of 3120 patients with IE (1327 < 65 years;1291 65-80 years;502 = 80 years) were enrolled.Fever and heart failure were the most common presentations of IE, with no differences among age groups.Patients =80 years who underwent surgery were significantly lower compared with other age groups (14.3%, 65 years; 20.5%, 65-79 years; 31.3%, =80 years). In-hospital mortality was lower in the <65-year group (20.3%, <65 years;30.1%, 65-79 years;34.7%, =80 years;p < 0.001) as well as 1-year mortality (3.2%, <65 years; 5.5%, 65-80 years;7.6%, =80 years; p = 0.003).Independent predictors of mortality were age = 80 years (hazard ratio [HR]:2.78;95% confidence interval [CI]:2.32–3.34), CCI = 3 (HR:1.62; 95% CI:1.39–1.88), and non-performed surgery (HR:1.64;95% CI:11.16–1.58).When the three age groups were compared, the AUROC curve for CCI was significantly larger for patients aged <65 years(p < 0.001) for both in-hospital and 1-year mortality. Conclusion: There were no differences in the clinical presentation of IE between the groups. Age = 80 years, high comorbidity (measured by CCI), and non-performance of surgery were independent predictors of mortality in patients with IE.CCI could help to identify those patients with IE and surgical indication who present a lower risk of in-hospital and 1-year mortality after surgery, especially in the <65-year group

Role of age and comorbidities in mortality of patients with infective endocarditis

[Purpose]: The aim of this study was to analyse the characteristics of patients with IE in three groups of age and to assess the ability of age and the Charlson Comorbidity Index (CCI) to predict mortality. [Methods]: Prospective cohort study of all patients with IE included in the GAMES Spanish database between 2008 and 2015.Patients were stratified into three age groups:<65 years,65 to 80 years,and ≥ 80 years.The area under the receiver-operating characteristic (AUROC) curve was calculated to quantify the diagnostic accuracy of the CCI to predict mortality risk. [Results]: A total of 3120 patients with IE (1327 < 65 years;1291 65-80 years;502 ≥ 80 years) were enrolled.Fever and heart failure were the most common presentations of IE, with no differences among age groups.Patients ≥80 years who underwent surgery were significantly lower compared with other age groups (14.3%,65 years; 20.5%,65-79 years; 31.3%,≥80 years). In-hospital mortality was lower in the <65-year group (20.3%,<65 years;30.1%,65-79 years;34.7%,≥80 years;p < 0.001) as well as 1-year mortality (3.2%, <65 years; 5.5%, 65-80 years;7.6%,≥80 years; p = 0.003).Independent predictors of mortality were age ≥ 80 years (hazard ratio [HR]:2.78;95% confidence interval [CI]:2.32–3.34), CCI ≥ 3 (HR:1.62; 95% CI:1.39–1.88),and non-performed surgery (HR:1.64;95% CI:11.16–1.58).When the three age groups were compared,the AUROC curve for CCI was significantly larger for patients aged <65 years(p < 0.001) for both in-hospital and 1-year mortality. [Conclusion]: There were no differences in the clinical presentation of IE between the groups. Age ≥ 80 years, high comorbidity (measured by CCI),and non-performance of surgery were independent predictors of mortality in patients with IE.CCI could help to identify those patients with IE and surgical indication who present a lower risk of in-hospital and 1-year mortality after surgery, especially in the <65-year group

Clasificación y análisis de los modelos de fuentes de video sobre internet

El video es en la actualidad uno de los servicios más importantes y apreciados por el ser humano. A lo largo de las últimas décadas el tráfico de video ha fluido a través de distintos tipos de redes usando diversos sistemas de codificación. En años recientes la masificación de Internet, los esfuerzos de algunas entidades de estandarización y la evolución propia de las redes (con los respectivos aumentos en ancho de banda) han fijado las nuevas bases que han hecho que los variados tipos de fuentes de video converjan y sean cada vez más compatibles con la red de redesMagíster en Ingeniería ElectrónicaMaestrí

Seguridad basada en parámetros SIM para entornos de comercio electrónico móvil

Los requerimientos de seguridad son los más exigentes en el dominio del comercio electrónico. Cuando se ha-bla de comercio electrónico móvil los requisitos a nivel de seguridad no solo conservan su nivel de exigencia, sino que se debe mantener un equilibrio entre el grado de seguridad que se requiere y las capacidades de los dispositivos, tanto a nivel hardware como de usabilidad. Estas características exigen el diseño de modelos con un esquema simple de autenticación y autorización transparente para los usuarios, que además garantice la integridad de la información que se intercambia durante cualquier transacción electrónica. Como respuesta a esta necesidad, el Grupo de Interés en el Desarrollo de Aplicaciones Móviles e Inalámbricas W@PColombia, ha desarrollado la plataforma P3SIM con el objeto de brindar las facilidades necesarias para la construcción de aplicaciones móviles seguras basadas en parámetros SIM; a través de un framework, un ambiente de compilación y de simulación como sus principales componentes, la plataforma P3SIM combina las ventajas de identificación que proporciona el módulo SIM con las capacidades que en materia de seguridad ofrecen API como SATSA y JavaCard en el entorno Java ME, una de las plataformas más utilizadas en el desarrollo de aplicaciones para dispositivos móviles. Igualmente, a través del desarrollo de un prototipo aplicado al contexto del comercio elec-trónico móvil, no solo se demuestran las facultades de la plataforma para operar en ambientes seguros sino también su capacidad de adaptación a los requerimientos de seguridad fijados por el entorno

Ordenación territorial: una revisión desde los objetivos de desarrollo sostenible

Esta obra está integrad por diecisiete capítulos de libro que se organizan en tres partes: los servicios ecosistémicos; vulnerabilidad; y sostenibilidad, en el marco de los Objetivos de Desarrollo Sostenible