2,236 research outputs found
Are there biological gender differences at the early stages of first language acquisition when producing double object constructions and to/for-datives?
Producción CientíficaThis study examines whether biological gender differences appear in the early stages of acquisition in the case of English dative alternation (DA) structures (double object constructions (DOCs) and to/for-datives). Girls have been found to show faster syntactic development when compared to boys (Lovas, 2011). In the case of the acquisition of DA, an order in the emergence and in the incidence of English DA would entail a syntactic derivational status between DOCs and to/for-datives with one being the original structure and the other the derived one (Gu, 2010). However, analogous ages of onset and fairly similar frequency rates in the production could suggest the construction of two underived structures. We investigate whether biological gender differences appear in the case of DOCs and to/for-datives. We also investigate whether the exposure to English DA (adult input) results in differences between the girls’ output and the boys’ output. We analyze data from eight monolingual English girls and five monolingual English boys, and the adults that interact with them, as available in CHILDES. Our findings reveal that monolingual girls and monolingual boys pattern closely in the acquisition of the syntactic non-derivational relationship between DOCs and to/for-datives, as seen in their similar emergence. Biological gender differences are not seen either in the acquisition of the additional properties of to/for-datives given their later onset and their lower incidence when compared to DOCs. These production patterns also correlate with the frequency with which these structures are heard in the adult input.Junta de Castilla y León (programa de apoyo a proyectos de investigación - Ref. VA009P17)Ministerio de Ciencia, Innovación y Universidades (ref. PGC2018-097693-B-I00
Smart-Cities urban mobility management architecture for electric vehicles
Improving efficiency is one of the most important objectives of the Smart Cities standards, and Electric Vehicles (EVs). TICS can help to soften one of their main limitations –autonomy– planning efficient driving strategies. This paper evaluates the physical variables that have an impact on the EV consumption and presents an electronic architecture to monitor them in an Experimental Ultralight Electric Vehicle. This system includes a set of very low cost sensors integrated with a data logger and a GPRS transmission system that can connect, in real time, with a control center where a route-finding reinforcement-learning algorithm that helps to find the most-effective route and reduce the time spent on urban environment tips.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech
Photovoltaic charging multi-station with modular architecture for Light Electric Vehicles
This paper deals with a modular architecture for recharging the batteries of light electric vehicles (LEVs) using a photovoltaic (PV) generator.
The architecture is divided into two hierarchical levels. At the top level (master), a microcontroller tracks the maximum power point of the PV generator. This microcontroller executes a PID control algorithm whose output is the setpoint of the microcontrollers of the lower level. At the lower level (slaves) there is a microcontroller for each vehicle charging station. Each microcontroller controls the recharge current of the vehicle battery connected to the station by executing another PID control algorithm. The modular architecture allows the number of charging stations to be extended to 112.
Other characteristics of the system are the automatic detection of the nominal voltage of the battery (it allows to recharge batteries of 24V, 36V or 48V, equally) and the inclusion of protection functions as battery overload or detection of not allowed batteriesUniversidad de Málaga. Campus de Excelencia Internacional Andalucía Tech
Optimization of a low weight electronic differential for LEVs
It is presented a performance analysis of an Electronic Differential (ED) system designed for Light Electric Vehicles (LEVs). We have developed a test tricycle vehicle with one front steering wheel and two rear fixed units is a same axis with a brushless DC integrated in each of them. Each motor has an independent controller unit and a common Arduino electronic CPU based that can plan specific speeds for each wheels as curves are being traced.
Different implementations of sensors (input current/torque, steering angle and speed of the wheels) are discussed related to hardware complexity, and performance obtained based on speed level requirements and slipping on the traction wheels.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech
La psicoterapia cognitivo conductual y algunas terapias alternativas complementarias (Propuesta de intervención).
En la presente investigación, se da una introducción a la terapia cognitivo conductual (TCC) desde la perspectiva de Ellis y Beck; así como la de algunas técnicas alternativas complementarias para el tratamiento psicológico; como son, la bioenergética, la Técnica de Campo Mental de Callahan, Flores de Bach y Aromaterapia.
Así mismo, se plantea la necesidad de generar nuevas estrategias de trabajo en el ámbito de la Psicología, de acuerdo a las necesidades sociales de la actualidad, poniendo énfasis en los problemas relacionados a tiempo, espacio y economía
Transcritical Carbon Dioxide Charge-Discharge Energy Storage with Integration of Solar Energy
New and improved energy storage technologies are required to overcome
non-dispatchability, which is the main challenge for the successful integration of large
shares of renewable energy within energy supply systems. Energy storage is proposed to
tackle daily variations on the demand side, i.e., storing low-price energy during off-peak
or valley periods for utilization during peak periods. Regarding electrical energy storage,
several technologies are available with different potentials for scalability, density, and
cost. A recent approach for grid-scale applications is based on transcritical carbon
dioxide charge and discharge cycles in combination with thermal energy storage systems.
This alternative to pumped-hydro and compressed air energy storage has been discussed
in scientific literature, where different configurations have been proposed and their
efficiency and costs calculated. The potential of the concept has been demonstrated to be
an economical alternative, including hybrid concepts with solar thermal storage. Even at
low temperatures, the addition of solar energy has proved to be cost effective. This paper
explores the effect of introducing solar-based high temperature heat on the performance
of different configurations of “Transcritical carbon dioxide ‒ thermal energy storage
system” cycles. A base-cycle with 8-hour discharge time is compared with different
layouts. Discussions include details on the models, parametric analyses -including solar
technology alternatives-, and simulation results. Round trip efficiency of the base case,
without solar support and at pressure ratio of 9.4, is 52%. When solar input is considered,
the efficiency is above 60%, increasing the turbine inlet temperature to 950 K. Estimated
levelized cost of electricity values are in the range of pumped hydro and compressed air
energy storage, 90-140 USD/MWh in agreement with other works on this thermal storage
technology. The global analysis shows clear advantages for advancing in the study and
definition of this technology for exploitation of synergies at different power ranges,
integrated with mid/high temperature solar power plants and with smaller-scale
renewable installations.Unión Europea. Fondo Europeo de Desarrollo Regional SOE1 / P3 / P0429E
Educational Use of Social Media in Primary and Childhood Education Degrees at a Virtual University
The use of social networks is part of people's daily lives, and university students, in their academic life, make particularly intense use of them on a daily basis for different purposes. This research analyses the nature, intensity, and type of educational use of these social media by childhood and primary pre-teachers who are pursuing their studies online in Spain. To this end, we designed and validated an ad hoc questionnaire, obtaining 268 valid responses to research the specific characteristics of students studying for degrees in early childhood education and primary education and a double degree in early childhood and primary education at a university that is exclusively online. The results show that participants habitually use a variety of social media, but they only use some of them for educational purposes. General social networks offer future teachers versatility, the possibility to develop and leverage social capital, and opportunities to connect formal, non-formal and informal settings. The most used networks were WhatsApp, YouTube and above all Facebook, a reasonably large percentage use Instagram or Pinterest, and, to a lesser extent, Skype, and a lightly under half have Twitter. With regards to how they are used for educational purposes, a majority of respondents reported using them to find classroom activities, new ideas and material that might be of use in their academic work. It was also found that students consumed more information than what they produced, such that social capital is not used in an optimal way. It is concluded that in a university that operates exclusively online, the use of social networks fulfils the function of covering affective and social needs in an optimal way
Educational Use of Social Media in Primary and Childhood Education Degrees at a Virtual University
The use of social networks is part of people's daily lives, and university students, in their academic life, make particularly intense use of them on a daily basis for different purposes. This research analyses the nature, intensity, and type of educational use of these social media by childhood and primary pre-teachers who are pursuing their studies online in Spain. To this end, we designed and validated an ad hoc questionnaire, obtaining 268 valid responses to research the specific characteristics of students studying for degrees in early childhood education and primary education and a double degree in early childhood and primary education at a university that is exclusively online. The results show that participants habitually use a variety of social media, but they only use some of them for educational purposes. General social networks offer future teachers versatility, the possibility to develop and leverage social capital, and opportunities to connect formal, non -formal and informal settings. The most used networks were WhatsApp, YouTube and above all Facebook, a reasonably large percentage use Instagram or Pinterest, and, to a lesser extent, Skype, and a lightly under half have Twitter. With regards to how they are used for educational purposes, a majority of respondents reported using them to find classroom activities, new ideas and material that might be of use in their academic work. It was also found that students consumed more information than what they produced, such that social capital is not used in an optimal way. It is concluded that in a university that operates exclusively online, the use of social networks fulfils the function of covering affective and social needs in an optimal way
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