Corporate diversification and R&D intensity dynamics

We study the dynamic bidirectional relationship between firm R&D intensity and corporate diversification, using longitudinal data of Spanish manufacturing companies. Our empirical approach takes into account the censored nature of the dependent variables and the existence of firm-specific unobserved heterogeneity. Whereas we find a positive linear effect of R&D intensity on related diversification, the evidence about the effect of related diversification on R&D intensity takes the form of an inverted U. Hence, the effect of related diversification on R&D intensity is positive but marginally decreasing for moderate levels of related diversification, but such effect can turn out negative for high levels of related diversification. Additionally, the consequences of the dynamic relation are that the effects are substantially larger in the long-run than in the short-run

Corporate diversification and R&D intensity dynamics

We study the dynamic bidirectional relationship between firm R&D intensity and corporate diversification, using longitudinal data of Spanish manufacturing companies. Our empirical approach takes into account the censored nature of the dependent variables and the existence of firm-specific unobserved heterogeneity. Whereas we find a positive linear effect of R&D intensity on related diversification, the evidence about the effect of related diversification on R&D intensity takes the form of an inverted U. Hence, the effect of related diversification on R&D intensity is positive but marginally decreasing for moderate levels of related diversification, but such effect can turn out negative for high levels of related diversification. Additionally, the consequences of the dynamic relation are that the effects are substantially larger in the long-run than in the short-run.

¿Hacia dónde va el acogimiento residencial?

Los centros de menores, tanto ayer como hoy, han cumplido con una labor de sustitución familiar, con resultados y valoración en ocasiones muy controvertidos, Recientemente se ha producido en España un acalorado debate sobre la conveniencia, o no, de continuar con los centros de acogimiento residencial, siendo mayoritariamente partidarios, los expertos consultados, de su desaparición. Los resultados de esta investigación, y de otras en la misma línea, nos muestran un horizonte menos negativo del acogimiento residencial y con capacidad de ofrecer respuestas positivas para un sector concreto de población infanto-juvenil necesitada de protección.The centers of youth and children have fulfilling a work in the family situation, with very controversial outputs and assessments. Recently, an intense debate is taken place about the convenience or not in continuing with the residential centers in Spain. The experts consulted in this matter are exposing the need to disappear these centers. However, the results of this research, coinciding with other research works in the same field, show a less negative horizon in residential centers, where comes up their ability to offer positive responses to the children and youth who need this protection

Aplicación de la Webquest en Historia del Derecho, febrero 2007

Comunicación en las II Jornadas en Red sobre el Espacio Europeo de Educación Superior, titulada, Aplicación de la WebQuest en Historia del Derecho (UOC, 2007). La WebQuest es un tipo de actividad didáctica basado en la utilización de Internet. Optimiza las posibilidades educativas de la red y evita las deficiencias que genera una búsqueda de información no guiada. La WebQuest propone al estudiante una serie de tareas y procesos estructurados de forma motivante. Esta estructura está protocolizada universalmente y sirve para dinamizar el proceso de enseñanza y aprendizaje, así como para adquirir las competencias propias de cada estudio.Comunicació a les II Jornades en Xarxa sobre l'Espai Europeu d'Ensenyament Superior, titulada, Aplicació de la WebQuest en Història del Dret (UOC, 2007). La WebQuest és un tipus d'activitat didàctica basat en la utilització d'Internet. Optimitza les possibilitats educatives de la xarxa i evita les deficiències que genera una recerca d'informació no guiada. La WebQuest proposa a l'estudiant una sèrie de tasques i processos estructurats de forma motivant. Aquesta estructura està protocol·litzada universalment i serveix per a dinamitzar el procés d'ensenyament i aprenentatge, així com per adquirir les competències pròpies de cada estudi.Paper presented at the 2nd Network Conference on the European Higher Education Area (II Jornades en Xarxa sobre l'Espai Europeu d'Ensenyament Superior), entitled, Implementation of WebQuest in History of Law (UOC, 2007). WebQuest is a type of educational activity based on the use of the Internet. It optimizes the educational possibilities of the network and avoids the shortcomings that generate an unguided information search. The WebQuest offers the students a variety of tasks and structured processes in a more motivating manner. This structure is universally notarised and serves to streamline the process of teaching and learning, and to acquire the skills needed in each study

Preparación científica de CARMENES : caracterización de enanas M con espectroscopía de baja resolución y búsqueda de compañeros separados poco masivos de estrellas jóvenes

Tesis inédita de la Universidad Complutense de Madrid, Facultad de Ciencias Físicas, Departamento de Física de la Tierra, Astronomía y Astrofísica II (Astrofísica y Ciencias de la Atmósfera), leída el 05-11-2015.Depto. de Física de la Tierra y AstrofísicaFac. de Ciencias FísicasTRUEunpu

Model and management indicators in industrial omnichannel (B2B)

The COVID-19 pandemic has driven increases in the provision of services through digital channels, even by more traditional companies. An Omnichannel model of service provision poses new management challenges for companies. This research reviews the literature on Omnichannel Management by companies whose clients are other companies (B2B) and classifies the different areas of research to date. The principal finding is that, despite considerable academic interest in Omnichannel management, there have been few studies of Omnichannel in the B2B field. This emphasizes a significant research gap to address. We have also outlined the Research Agenda to highlight future lines of research

Validación experimental de un modelo de músculo activado de forma artificial

Postprint (published version

Design of a patient-tailored active knee-ankle-foot orthosis to assist the gait of spinal cord injured subjects

—This paper presents the main design steps in the development of an active knee-ankle-foot orthosis (KAFO) conceived to assist the gait of incomplete spinal cord injured (SCI) subjects. The design approach is based on the idea of modifying the available passive orthoses by adding adaptable mechatronic modules at the joints. This approach has resulted in a prototype that has been tested on SCI patients. The design and control problems found and their adopted solutions are thoroughly described.Postprint (published version

A comparison among different Hill-type contraction dynamics formulations for muscle force estimation

El músculo es un tipo de tejido capaz de contraerse y, por lo tanto, acortarse, produciendo una fuerza capaz de generar movimiento. El análisis de su actividad es esencial para entender cómo se genera la fuerza para realizar un movimiento y cómo esa fuerza puede ser estimada a partir de las medidas directas o indirectas. El modelo muscular Hill-tipo es uno de los modelos más utilizados para describir el mecanismo de producción de fuerza. Está compuesto por diferentes elementos que describen el comportamiento del músculo contráctil (serie, paralelo y elástica elemento elástico) y el tendón. En este trabajo analizamos las diferencias entre diferentes formulaciones encontradas en la literatura para estos elementos. Para evaluar las diferencias, un flexo-movimiento de extensión del brazo se realiza, utilizando como entrada a los distintos modelos de electromiografía de superficie de la señal grabada y del músculo-tendón longitudes y por las velocidades de contracción obtenida a partir del análisis dinámico inverso. Los resultados muestran que la fuerza predicha por los diferentes modelos es similar y las principales diferencias en la predicción de la fuerza muscular se observaron en la flexión completa. Se espera que los resultados contribuyan a seleccionar las diferentes formulaciones del modelo muscular tipo Hill para resolver un problema específico.Muscle is a type of tissue able to contract and, thus, shorten, producing a pulling force able to generate movement. The analysis of its activity is essential to understand how the force is generated to perform a movement and how that force can be estimated from direct or indirect measurements. Hill-type muscle model is one of the most used models to describe the mechanism of force production. It is composed by different elements that describe the behaviour of the muscle (contractile, series elastic and parallel elastic element) and tendon. In this work we analyze the differences between different formulations found in the literature for these elements. To evaluate the differences, a flexo-extension movement of the arm was performed, using as input to the different models the surface electromyography signal recorded and the muscle-tendon lengths and contraction velocities obtained by means of inverse dynamic analysis. The results show that the force predicted by the different models is similar and the main differences in muscle force prediction were observed at full-flexion. The results are expected to contribute in the selection of the different formulations of Hill-type muscle model to solve a specific problem.• Ministerio de Economía y Competitividad y Fondos FEDER. Proyecto DPI2012-38331-C03 • Unión Europea. Fondos FEDERpeerReviewe

Related diversification and R&D intensity dynamics

Using longitudinal data of Spanish manufacturing companies, we study the dynamic, bidirectional relationship between firm research and development (R&D) intensity and corporate diversification in an organic growth setting. Our empirical approach accounts for the different sources of endogeneity. Although we find a positive linear effect of R&D intensity on related diversification, the effect of related diversification on R&D intensity assumes the form of an inverted U. Thus, the effect of related diversification on R&D intensity is positive, but marginally decreases for moderate levels of related diversification. Such an effect can become negative, however, for high levels of related diversification. Additionally, as a consequence of dynamics, the effects after one year are substantially lower than the overall effects that occur over several years.Both authors acknowledge financial support from the Spanish Ministry of Science and Innovation, Grants No. ECO2009-11165 and ECO2009-10358Publicad