783 research outputs found
Towards the cloudification of the social networks analytics
In the last years, with the increase of the available data from social networks and the rise of big data technologies, social data has emerged as one of the most profitable market for companies to increase their benefits. Besides, social computation scientists see such data as a vast ocean of information to study modern human societies. Nowadays, enterprises and researchers are developing their own mining tools in house, or they are outsourcing their social media mining needs to specialised companies with its consequent economical cost. In this paper, we present the first cloud computing service to facilitate the deployment of social media analytics applications to allow data practitioners to use social mining tools as a service. The main advantage of this service is the possibility to run different queries at the same time and combine their results in real time. Additionally, we also introduce twearch, a prototype to develop twitter mining algorithms as services in the cloud.Peer ReviewedPostprint (author’s final draft
Arreglos domésticos en parejas del mismo sexo, hacia la deconstrucción de la heteronormatividad
El presente documento contiene la investigación “Arreglos domésticos en parejas del mismo sexo, hacia la deconstrucción de la heteronormatividad,” el proyecto esboza un tema poco estudiado en Latinoamérica, el cual busca entender los roles y las funciones que se construyen en el cohabitar entre las parejas homoeróticas en la ciudad de Pereira. En esta investigación están presentes las categorías de arreglos domésticos, cohabitación, y homoerótismo, se busca comprender los roles y funciones que emergen cuando conviven parejas del mismo sexo; los nuevos modos de vida que se producen desde su interior y su visibilización en la vida pública, este estudio será referenciado bajo investigaciones realizadas por Gabriel Gallego Montes (2013), Sebastián Giraldo Aguirre (2011), Christopher Carrington (1999), y Guillermo Núñez Noreña (1997) sobre arreglos domésticos por parte de las parejas del mismo sexo y patrones heteronormativos realizados en países como Colombia, México, Estados Unidos, y Canadá
Control de robot de doble brazo mediante estructura corporal sensorizada
[ES] El objetivo es medir los ángulos de los principales grados de libertad de los brazos de una persona. Para ello, a lo largo de este trabajo se realizará el diseño mecánico de una estructura que se acoplará a los brazos y que será capaz de captar los cambios en los ejes de cada brazo. También se seleccionará e implementará la electrónica de sensorización y comunicación que irá acoplada a la estructura mecánico. Finalmente, se implementará el software necesario tanto en el robot como en un sistema empotrado para realizar el control y la comunicación entre ellos.[EN] The aim is to measure the angles of the main degrees of freedom of a person's arms. For this, throughout this work the mechanical design of a structure that will be coupled to the arms and that will be able to capture the changes in the axes of each arm will be made. It will also select and implement the electronics for sensorization and communication that will be coupled to the mechanical structure. Finally, the necessary software will be implemented both in the robot and in a built-in system to perform the control and communication between them.Conesa Guerrero, E. (2019). Control de robot de doble brazo mediante estructura corporal sensorizada. Universitat Politècnica de València. http://hdl.handle.net/10251/131355TFG
Conflict-free strides for vectors in matched memories
Address transformation schemes, such as skewing and linear transformations, have been proposed to achieve conflict-free access to one family of strides in vector processors with matched memories. The paper extends these schemes to achieve this conflict-free access for several families. The basic idea is to perform an out-of-order access to vectors of fixed length, equal to that of the vector registers of the processor. The hardware required is similar to that for the access in order.Peer ReviewedPostprint (author's final draft
Microbial ecology evaluation of an iberian pig processing plant through implementing sch sensors and the influence of the resident microbiota on Listeria monocytogenes
This study was supported by Research Project grants RTI2018-098267-R-C32 from the Spanish Ministerio de Ciencia, Innovaci?n y Universidades. Acknowledgments: The authors thank Dolors Busquets Soler for her technical assistance in the laboratory and Sarah Davies for the English grammar review.There is a whole community of microorganisms capable of surviving the cleaning and disinfection processes in the food industry. These persistent microorganisms can enhance or inhibit biofilm formation and the proliferation of foodborne pathogens. Cleaning and disinfection protocols will never reduce the contamination load to 0; however, it is crucial to know which resident species are present and the risk they represent to pathogens, such as Listeria monocytogenes, as they can be further used as a complementary control strategy. The aim of this study was to evaluate the resident surface microbiota in an Iberian pig processing plant after carrying out the cleaning and disinfection processes. To do so, surface sensors were implemented, sampled, and evaluated by culture plate count. Further, isolated microorganisms were identified through biochemical tests. The results show that the surfaces are dominated by Bacillus spp., Pseudomonas spp., different enterobacteria, Mannheimia haemolytica, Rhizobium radiobacter, Staphylococcus spp., Aeromonas spp., lactic acid bacteria, and yeasts and molds. Moreover, their probable relationship with the presence of L. monocytogenes in three areas of the plant is also explained. Further studies of the resident microbiota and their interaction with pathogens such as L. monocytogenes are required. New control strategies that promote the most advantageous profile of microorganisms in the resident microbiota could be a possible alternative for pathogen control in the food industry. To this end, the understanding of the resident microbiota on the surfaces of the food industry and its relation with pathogen presence is crucial
Exposición a la violencia e ideación suicida en jóvenes de la comunidad LGBT+ de ciudad de Chiclayo
La investigación que se detalla planteó como objetivo determinar la relación entre
exposición a la violencia e ideación suicida en jóvenes de la comunidad LGBT+ de
ciudad de Chiclayo. Se elaboró a partir de un enfoque cuantitativo y diseño no
experimental de tipo descriptivo – correlacional. Se contó con una muestra de 600
personas pertenecientes a la comunidad LGBT de Chiclayo. Las escalas utilizadas
para la medición fueron el Cuestionario de exposición a la violencia [CEV] creado por
Orure y Calvet (2010) y adaptado por Hernández et al. (2016); y el Inventario de
ideación suicida positiva y negativa [PANSI] creado por Osman (1998) y adaptado por
Villalobos (2010). En consecuencia, los resultados obtenidos comprobaron la
exposición a la violencia guarda relación altamente significativa con la ideación
suicida (p<0.01 ). Así mismo, se reportó que en el 52.3% de los evaluados manifiesta
un nivel medio de exposición a la violencia y el 79.0% presentan niveles medios de
ideación suicida
3D pore analysis of sedimentary rocks
A 3D representation of the internal structure and fabric of sedimentary rocks is of paramount interest to evaluate their structural parameters such as porosity, pore-size distribution and permeability. The classical experimental technique to evaluate the pore space volume and pore size distribution is the Mercury Intrusion Porosimetry (MIP). Computer-based methods use 3D imaging technologies such as Computer Tomography (CT) scanned images to construct and evaluate a 3D virtual representation of the internal pore distribution. In this work, based on a three samples set of sandstone, we apply two numerical (computer-based) methods in order to reconstruct and analyse the internal pore network, and compare it with the results obtained by MIP analysis. The first numerical method performs a virtual simulation of MIP. The second one obtains a graph of pores using a sphere-filling based approach. For all methods, we compute the global porosity and the pore-size distribution. Moreover, with the numerical methods, we obtain the total porosity and a graph representing the pore space that can be visualized with 3D illustration techniques.Postprint (published version
Microscopic analysis and microstructural characterization of the organic and inorganic components of dairy fouling during the cleaning process
This study evaluated the organic residues of milk fouling using fluorescence and confocal laser scanning microscopy. The inorganic content was analyzed with energy-dispersive X-ray spectroscopy, complemented with inductively coupled plasma optical emission spectrometry. These techniques were applied to evaluate milk fouling cleanliness using an alkaline product and an enzymatic formulation based on protease and amylase. The results showed that the efficiency of enzymatic cleaning was 87.1% when it was evaluated at 55°C for 30 min, and with a medium of pH 8.5. No difference was found from the efficacy in eliminating dairy fouling observed for the chemical cleaning (86.9%). The fluorescence microscopy proved useful for determining the organic solid components in the outer layer of the dairy fouling. The fouling spatial disposition in 3 dimensions, obtained by confocal laser scanning microscopy, showed that it was formed of 51.3% sugars, 9.3% fats, and 39.4% proteins, with the enzymatic cleaning of these compounds being homogeneous, compared with chemical cleaning. The protein and lipid contents were in the surface layer, whereas sugars were located in the innermost part that contributes to the Maillard reaction during fouling formation. After enzymatic cleaning, the reduction in the concentration of Ca and P was 71.61 and 74.67%, respectively, compared with fouling intact. Thus, enzymatic cleaning, without the accumulation of Na from chemical cleaning, leaves 1.5 times less mineral than chemical cleaning. Knowing the content and structure of fouling in the industry helps to formulate better products to achieve proper levels of cleanliness. Additionally, studying the cleaning residues helps to avoid problems of cross-contamination between batches or subsequent microbial growths (biofilms) on surfaces with residuesinfo:eu-repo/semantics/acceptedVersio
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