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951.
    
The human immunodeficiency virus (HIV), the virus that leads to acquired immunodeficiency syndrome (AIDS), has been a part of American society for over two decades. Today, HIV/AIDS touches all demographic groups, including young children. It is for this reason that child care providers need to be informed about HIV/AIDS and related policies that impact their work with young children. The purpose of this study was to examine child care providers' use of different HIV/AIDS information sources in relationship to their knowledge about HIV/AIDS and their response to common childhood behaviors and classroom situations involving an HIV-infected child. Results suggest that different types of information sources are associated with different aspects of providers' knowledge about and response to pediatric HIV/AIDS. Implications for the planning and delivery of HIV/AID training involving child care providers are discussed.  相似文献   
952.
    
The paper considers the negative effects of the degeneration of the mathematics syllabus for engineering-oriented students into a collection of unconnected recipes, and presents a modernization of a linear algebra course to serve as a tool for the unification of the syllabus into a single transparent picture. The modernization is centred on the use of operator language as enabled by the incorporation of MATLAB-based applications into the theoretical part of the course.  相似文献   
953.
Abstract

This article presents the partial results of a study that analysed the barriers and means of support that students with disabilities find in classrooms and other university settings (offices, departments, libraries, etc.), using the biographical narrative method. The results of this article focus exclusively on the obstacles and means of support identified by humanities students, with the information organized in relation to the institution in general, infrastructures and architectural barriers, lecturers and their teaching methods, fellow students and proposals for improving universities and classrooms. Finally, the conclusion discusses the main findings regarding how the university facilitates or hinders the participants’ learning processes in this study. From this perspective, and taking the social model of disability as a reference, it is concluded that in order to become inclusive, the university must commit to adopting proactive measures that eliminate the barriers preventing these students from learning and from participating fully.  相似文献   
954.
955.
This work proposes a novel data-driven distributed formation-control approach based on multi-population evolutionary games, which is structured in a leader-follower scheme. The methodology considers a time-varying communication graph that describes how the multiple agents share information to each other. We present stability guarantees for configurations given by time-varying interaction networks, making the proposed method suitable for real-world problems where communication constraints change along the time. Additionally, the proposed formation controller allows for an agent to leave or enter the group without the need to modify the behaviors of other agents in the group. This game-theoretical approach is evaluated through numerical simulations and real outdoors experimental results using a fleet of aerial autonomous vehicles, showing the control performance.  相似文献   
956.
Research in Higher Education - Guided by Critical Consciousness Theory and the Multicontextual Model for Diverse Learning Environments, this research explored whether a critical reflection of...  相似文献   
957.
Resumen

Se revisan en este artículo los procesos de adquisición y uso del lenguaje y la lectoescritura en la escuela, como conformadores de los diversos mecanismos de comprensión. Se valora a continuación la aportación de los modelos teóricos de instrucción en la comprensión: esquemas, estrategias de resumen y extracción de ideas principales, técnicas de estudio y mecanismos metacognitivos de control, con vistas a una renovación de la didáctica de la lectoescritura.  相似文献   
958.
    
In this study, a novel nonautonomous version of autonomous Chua's circuit is presented. The proposed nonautonomous version of Chua's circuit was designed by placing a sinusoidal source to the inner structure of the nonlinear resistor, namely, Chua's diode. The circuit's chaotic dynamics have been investigated by PSpice simulations and laboratory experiments.  相似文献   
959.
    
While the call for interdisciplinary studies has been loud and clear over the last decade or so, the number of interdisciplinary publications in sport sciences is rather limited. One of the reasons for this scarcity is the complexity of the research process itself. Still, the combination and integration of information from different scientific disciplines seems to be important to better explain how elite performance comes about. In this article, we focus on this issue and discuss the advantages of interdisciplinary research for understanding how elite athletes are able to achieve such high-proficiency levels. The first section provides an overview of the studies that investigated elite performance in sports. In the second section, we focus on the issue of interdisciplinarity and illustrate how the ecological–dynamical approach and the concept of dimensional reduction can be used to explain how elite performers cope with the complex nature of sport skills. In the last section, we present a research outline and some practical considerations that can be helpful for researchers who aim to study sport skills from an interdisciplinary perspective.  相似文献   
960.
    
ABSTRACT

The aims of this study were (i) to examine the sedentary time (ST) during different time periods [i.e., weekend, out-of-school weekdays hours, school hours, recess, physical education classes (PEC)] in children and adolescents; (ii) to identify 2-year longitudinal changes in the ST for these periods; and (iii) to examine if ST at baseline is associated with ST 2 years later. This was a 2-year follow-up study with 826 (51.9% boys) children and 678 (50.7% boys) adolescents. Accelerometers were used to assess ST. Students spent more than 60% of their weekend, out-of-school hours and school hours in ST. During these periods, girls and adolescents were more sedentary than boys and children, respectively (p < 0.05). Over 2-year follow-up, ST increased during the weekend, out-of-school hours, school hours and recess in all subgroups studied (p < 0.001). ST during PEC declined 2% per year in children (p < 0.001) but it increased in adolescents (p < 0.05). ST during the periods analysed at baseline was lowly associated with ST during these periods 2 years later (intraclass correlations from <0.001 to 0.364). Interventions in these settings may be adequate if the intention is to avoid ST increase in students.  相似文献   
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