Inferring User Personality from Twitter

Personality affects how a person behaves when interacting with people and computer systems. It can determine one’s needs and preferences in different contexts, which is especially useful for adaptive and recommender systems. Personality questionnaires are widely used to acquire information about user personality. However, filling in them can be tedious. Analyzing the user interactions can be another way of obtaining that information. Since personality has an impact on the way a person interacts with others, and social networks are widely used for this purpose, information about user interactions through social networks can give a clue about their personality. In this paper, we present a system able to obtain data about user interactions in Twitter and analyze them in order to infer user personality. The system has been used not only to infer personality but also to compare and evaluate different user models, classifiers and personality dimensionsThis work has been funded by the BLIND, project BLIND (BLIND) and by BLIND, project BLIND (BLIND). We also thank all the people that participated in this research fulfilling the personality test

Serious Games for Training Myoelectric Prostheses through Multi-Contact Devices

In the medical context, designing and developing myoelectric prostheses has made it possible for patients to regain mobility lost due to amputations; however, their use requires intensive training. Serious games through multi-touch devices can serve as a complement to the activities carried out during face-to-face sessions with occupational therapists and physiotherapists, as a useful resource to engage patients, especially children, and make them enjoy training. In this paper, we describe our work to support the training of myoelectric prostheses through digital serious games. Firstly, we studied the needs of children with myoelectric prostheses and the way they perform rehabilitation. Secondly, we designed specific games to support training accordingly. Thirdly, we developed a system able to generate variations of these games dynamically, adapting the elements at each round to the needs and progress of each child. The interfaces are simple, friendly, and based on tablets to favor autonomy. Finally, we assessed the potential of the use of these games for rehabilitation. Specialists in Physiotherapy, Occupational Therapy, Medicine and Special Education collaborated as experts; they agreed that SilverTouch is good for myoelectric prosthetic training and confirmed its potential to be widely used in this context.This research was co-funded by the Spanish Ministry of Science and Innovation, project IndiGo! number PID2019-105951RB-I00 and the Structural Funds FSE and FEDER, project e-MadridCM number S2018/TCS-4307

An object-oriented approach to Task Tree Management in the TANGOW system

This paper describes the object-oriented features of TANGOW (Task-based Adaptive learNer Guidance On the WWW), a tool for developing Internet-based courses. This system facilitates the construction of adaptive learning environments for the WWW and is able to guide the students during their learning process based on student profiles and previous actions. In the TANGOW system, the course contents is modelled in terms of objects and relationships among them. This allows the course designer to reuse the same descriptive objects in different sections of the same course, or even in completely different courses. In addition, information about the student and his/her actions when interacting with the system is also stored as dynamic objects, which are instantiated at runtime. This makes it easy to access and update student related data.Sociedad Argentina de Informática e Investigación Operativ

Ultrasound-assisted enzymatic indirect determination of total 3-monochloropropane-1,2-diol esters in canned fish oil fraction

A novel, fast, and cost-effective indirect enzymatic method was successfully developed to assess the total 3-monochloropropane-1,2-diol (3-MCPD) in canned food's oil fraction by the action of Burkholderia cepacia lipase. The total 3-MCPD were derivatized with n-Heptafluorobutyrylimidazole (HFBI) for GC–MS analysis during dispersive liquid–liquid microextraction (DLLME). An asymmetrical 2213//8 screening design was used to study the influence of critical factors on the method's effectiveness. The analytical features of the proposed method were assessed following Food and Drug Administration (FDA) guidelines using extra virgin olive oil (EVOO) as a blank sample. Outstanding results were achieved in terms of linearity (r2 = 0.9995), sensitivity, precision (2.1 % to 10.4 % RSD), and accuracy (98.7 % ≤ recovery ≤ 101.9 %). Method efficacy was tested by comparing the results of 10 edible oils for total 3-MCPD with those reported in previous works. A total of 41 samples were analyzed. The lowest 3-MCPD content was found in samples of albacore canned in EVOO oil, while the highest amounts were found in albacore, mackerel, and Atlantic saury samples, all preserved in refined sunflower oilThis work was supported by the Spanish Ministry of Science, Innovation, and Universities (Project RTI2018‐096450‐B‐I00) and FEDER fundsS

Química Analítica : materiales docentes : grado de Ingeniería Química, 2º curso

El capítulo 1 está dedicado al proceso analítico y a las propiedades analíticas que afectan a la calidad del resultado y del procedimiento de análisis químico. El capítulo 2 describe el muestreo y diferentes procesos de preparación de muestra. El capítulo 3 trata de los diferentes métodos volumétricos de análisis, incluyendo las valoraciones ácido-base, de formación de complejos, en medio heterogéneo y de oxidaciónreducción. Los tres capítulos siguientes están relacionados con los métodos espectroscópicos. El capítulo 4 es un tema de introducción a los métodos instrumentales en el que se describen los métodos de calibración, las fuentes de ruido y las características, especificaciones y clasificación de los analizadores de procesos y incluyendo el analizador continuo de flujo no segmentado. El capítulo 5 describe los métodos espectroscópicos en UV-Visible e IR, sus principios básicos, IV Prólogo componentes, función y requerimientos. El capítulo 6 está dedicado a los métodos espectroscópicos de análisis molecular, fundamento, aplicaciones y manejo de instrumentos. En el capítulo 7 se describe las características generales y aplicaciones de las técnicas de espectroscopía atómica o elemental. El capítulo 8 se dedica a las generalidades de la cromatografía, incluyendo el fundamento y aplicaciones de la cromatografía de gases y la detección por espectrometría de masas. El capítulo 9 describe los aspectos básicos e instrumentación de la cromatografía de líquidos de alta resolución y su acoplamiento a espectrometría de masas. Finalmente, en el capítulo 10 se describe el fundamento clasificación y aplicaciones de los sensores electroanalíticos.En el marco del Espacio Europeo de Educación Superior (EEES), cobra especial relevancia el impacto de las Tecnologías de la Información y la Comunicación (TICs) con posibilidades tanto para la elaboración del conocimento como para su adquisición y transmisión, mediante métodos pedagógicos más innovadores, adcesibles e interactivos que se adapten a los diferentes tipos de estudiantes. El acceso a las redes de la información dotan al docente y al alumnado de poderosas herramientas que abren un gran abanico de posibilidades metodológicas. Siguiendo esta línea, el ámbito de aplicación de este material docente corresponde a la materia de enseñanza-aprendizaje de “Química Analítica” de segundo curso (primer semestre) de la titulación de Grado en Ingeniería Química impartida en la Escuela Técnica Superior de Ingeniería (ETSE) de la Universidad de Santiago de Compostela

Diseño de un curso interactivo y adaptativo de procesadores de lenguajes

El objetivo de este trabajo es describir una experiencia de innovación docente a través de la red que se está llevando a cabo en la Escuela Técnica Superior de Informática de la U. Autónoma de Madrid para la docencia de la asignatura de Procesadores de Lenguaje. Las características principales de esta experiencia son (a) la utilización de una herramienta para la creación de cursos adaptativos y (b) la incorporación de ejercicios sobre gramáticas que requieren una evaluación compleja

Efecto de la pre-digestión del sustrato sobre la fermentación in vitro en conejos

Los trabajos de fermentacion realizados en conejos empleando la tecnica de produccion de gas in vitro desarrollada por Menke et al. (1979) presentan grandes variaciones en lo que se refiere a los inoculos utilizados, el procesado de los sustratos, la relacion inoculo/sustrato y los modelos matematicos de ajuste. En muchos trabajos, los sustratos solo son molidos (Calabro et al., 1999; Bovera et al., 2006), mientras que en otros se utiliza el residuo insoluble procedente de una pre-digestion in vitro donde se Simula la digestion del estomago e intestino delgado (Bindelle et a/. 2007; Rodriguez-Romero et al., 2011). Sin embargo, al estudiar la fermentacion de alimentos fibrosos seria interesante conservar en la muestra la fraccion de la fibra que se solubiliza en el intestino delgado (Abad-Guaman et al., 2015). Por otra parte, en conejos se ha observado que el nivel y tipo de fibra de la dieta de los donantes influye sobre la fermentacion in vitro (Rodriguez-Romero et al., 2011). El presente trabajo compara la fermentacion in vitro de diferentes sustratos cuando se realiza una pre-digesti6n o se incuba directamente el sustrato utilizando cecotrofos procedentes de gazapos alimentados con dos niveles de fibra soluble (FS)

Determination of synthetic opioids in oral fluid samples using fabric phase sorptive extraction and gas chromatography-mass spectrometry

New psychoactive substances (NPS) continue to emerge in the drug market every year, becoming a global threat to public health and safety. These compounds are mostly synthetic cannabinoids and designer cathinones. However, synthetic opioids have appeared on the recreational drug markets in recent years, particularly fentanyl and its derivatives (“fentanyls”). Fentanyl and its analogs are related to harmful intoxications and an increase in opioid-related mortality in many countries, such as in the United States and Europe in the last years. Taking the drug related global crisis into consideration, this work developed and validated an effective and sensitive method based on fabric phase sorptive extraction (FPSE) followed by gas chromatography-mass spectrometry (GC-MS) for the simultaneous determination of 11 fentanyl analogs in oral fluid samples. The extraction was carried out using a sol-gel Carbowax 20 M sorbent immobilized on 100% cellulose fabric substrate and using ethyl acetate as the desorption solvent. The limits of detection (LODs) and quantification (LOQs) ranged from 1 to 15 ng mL−1 and 5 to 50 ng mL−1, respectively. Intra-day and inter-day precision were found within 8.2% and 8.6%, respectively, while accuracy ranged from -5.5 to 9.1%, in accordance with the established criteria. The absolute recovery values were in the range of 94.5%–109.1%. The validated method demonstrated its great potential to detect and quantify fentanyl analogs in possible forensic work and off-site analysis in road traffic casesThis work was supported by the Spanish Ministry of Science, Innovation, and Universities (Project RTI2018‐096450‐B‐I00) and FEDER fundsS

Un sistema de enseñanza adaptativa a distancia basado en tareas y reglas docentes

This paper describes how hypernedia-based adaptive courses accessible through Internet can be designed and executed. llie TANGOW (Task-based Adaptive learNer Guidance Qn the Web) system can be used for both pu?poses. TANGOW is an adaptive learning environment based on the Web that guides students during their learning process when following such courses. The guiding procedure allows that both the proposed learning itineraries and the contents presented to the students while interacting with the system are adaptad to the student pro file, the actions performed t the student during the learning process and the selected teaching strategy. This goal is achieved by establishing a clear separation between the course contents and its structure. The course structure is defined l means of a set of teaching tasks and rules that reflect the goals proposed by the teacher.Este artículo describe cómo construir y ejecutar cursos adaptativos accesibles a través de Internet. Para ambas tareas se utiliza el sistema TA.NGOW (Task-based Adaptive learNer Guidance Qn the Web), un sistema de enseñanza adaptativa basado en la Web que guía a los estudiantes durante la realización de esos cursos. El procedimiento de guía permite que tanto los itinerarios propuestos a los estudiantes como los contenidos mostrados durante la realización de un curso se adapten al perfil del estudiante, a sus acciones durante la interacción con el curso y a la estrategia de aprendizaje activa. Este objetivo se consigue mediante la separación entre el contenido de los cursos y la estructura de los mismos, articulándose ésta última como un con junto de tareas y reglas docentes que reflejan los objetivos propuestos por el profesor

Fermentación in vitro de pepsina/pancreatina con inóculos de conejos

The in vitro gas production of pepsin/pancreatin used in the determination of in vitro digestibility was evaluated using different inocula from rabbits (ileal, caecal and soft faeces from rabbits). In experiment 1 were used 3 different ileal and caecal inocula obtained each one from the combination of the digesta of 3 different 70 d old rabbits