A new application model of building ventilation with light shafts: a proposal based on case study assessment     

Miguel Ángel Padilla-Marcos  Alberto Meiss  Jesús Feijó-Muñoz 《浙江大学学报(A卷英文版)》2018,19(10):796-810

There is a lack of studies concerning both the quality of air entering buildings from light shafts and its impact on energy consumption. A combined isothermal analysis of several factors such as urban environment and wind, along with the dimensional conditions of the building, facilitated the assessment of the light shaft to promote air change. The aim of this study was on the impact of architectural design on the quality of the incoming air from light shafts. The capacity of light shafts to provide air change with urban air was evaluated using the concept of air change efficiency. This is determined by the environment, the dimensions, and the proportions of the building containing a light shaft. These were simulated using computation fluid dynamics (CFD) techniques which were experimentally validated. This concept requires the definition of an ideal control domain for comparative evaluation in different cases. For the case studies evaluated, it was verified through numerical analysis that the longer the light shaft in the wind direction was, the better the air change efficiency. It was confirmed that light shafts up to 12 m high and with height/length (H/L) rates lower than 3 were those achieving the best efficiency. The study provided several evaluation tools of a design of this type of outdoor space according to the criteria of air change content. An equation is presented defining the value of the air change efficiency for the outline of architectural design strategies intended for buildings with air shafts.  相似文献   

From gap gazing to promising cases: Moving toward equity in urban education reform*     

Alberto J. Rodriguez 《科学教学研究杂志》2001,38(10):1115-1129

A case analysis of the Miami‐Dade Urban Systemic Initiative is presented in this article, citing this initiative as one of the sites with the greatest promise for affecting equity issues. Using a grounded‐theory methodological approach, a general framework for systemic reform was developed as a tool to examine the particulars of systemic reform initiatives and their potential to impact the teaching and learning of science and mathematics in diverse school contexts. It was found that to better understand the effectiveness of systemic reform initiatives requires answering two basic questions: What is the (pedagogical and ideological) systemic conceptual clarity guiding the reform efforts? And, what is the operational approach? Once answers to these questions are found, it becomes easier to explore how key officials are implementing or not implementing other aspects of systemic reform. The article also explains why less attention should be given to student outcomes (based on standardized tests) as the main indicator of success in systemic reform. Instead, it is proposed that insights gained from studying the particulars of promising initiatives can help others stimulate systemic reform in their own contexts, especially in urban contexts, which usually have few resources and a large population of students who are traditionally underserved. © 2001 John Wiley & Sons, Inc. J Res Sci Teach 38: 1115–1129, 2001  相似文献   

The impact of programme accreditation on Portuguese higher education provision   总被引：1，自引：0，他引：1  

Cristina Sin  Orlanda Tavares  Alberto Amaral 《Assessment & Evaluation in Higher Education》2017,42(6):860-871

The paper analyses the impact of programme accreditation in Portugal further to the operations of the Agency for Assessment and Accreditation of Higher Education, which were initiated in 2009. Tracking the evolution of study programmes, the paper found that, out of the initial 5262 programmes on offer in 2009/2010, 40% have been either discontinued or not accredited as of July 2015. The analysis revealed differences between the private and the public sectors, with higher proportions of discontinuations and closures in the former. For the discipline with the highest percentage of non-accredited programmes (Law), the main reasons for denied accreditation were analysed. The identified reasons were related to a lack of academic quality, for example, the programmes’ lack of compliance with legal requirements regarding teaching staff qualifications and full-time employment, the blurred identity of programmes, undifferentiated between university and polytechnic sectors, or curricular inconsistencies. The paper suggests that the identified reasons are likely to be symptomatic of the quality shortcomings in the provision of higher education programmes in Portugal. The data provide evidence that programme accreditation has had a powerful impact, reducing the number of programmes, increasing the number of PhD holders among teaching staff and raising institutional awareness of quality.  相似文献   

The Relationship Between School Composition, School Process and Mathematics Achievement in Secondary Education in Argentina     

Rubén Alberto Cervini Iturre 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2005,10(4):173-200

Using data from the 1998 High School National Census from the Ministry of Education and Culture of Argentina, the present study examines relationships between school composition, some characteristics of schooling (such as institutional culture and climate), and students’ achievement in Mathematics in the last year of high school. The study applies multilevel linear modeling on the levels of student, school and state. It finds a close relationship between achievement in Mathematics and the variables of school composition and schooling processes. It shows that when both variables act together, the effect of all other variables significantly decreases. The variables of schooling processes, however, even when diminished in influence, nonetheless notably continue to affect students’ achievements. The study also identifes a reference model for future studies evaluating other institutional factors of learning.  相似文献   

Maximum Likelihood Estimation of Structural Equation Models for Continuous Data: Standard Errors and Goodness of Fit     

Alberto Maydeu-Olivares 《Structural equation modeling》2017,24(3):383-394

Classical accounts of maximum likelihood (ML) estimation of structural equation models for continuous outcomes involve normality assumptions: standard errors (SEs) are obtained using the expected information matrix and the goodness of fit of the model is tested using the likelihood ratio (LR) statistic. Satorra and Bentler (1994) introduced SEs and mean adjustments or mean and variance adjustments to the LR statistic (involving also the expected information matrix) that are robust to nonnormality. However, in recent years, SEs obtained using the observed information matrix and alternative test statistics have become available. We investigate what choice of SE and test statistic yields better results using an extensive simulation study. We found that robust SEs computed using the expected information matrix coupled with a mean- and variance-adjusted LR test statistic (i.e., MLMV) is the optimal choice, even with normally distributed data, as it yielded the best combination of accurate SEs and Type I errors.  相似文献   

Music education for the improvement of coexistence in and beyond the classroom: a study based on the consultation of experts     

Alberto Cabedo-Mas  Maravillas Díaz-Gómez 《Teachers and Teaching》2016,22(3):368-386

This study examines theoretical principles and models of music education to promote interpersonal and social relations. It focuses on the primary and secondary stages of education in Spain. To this end, relevant national and international figures in education, music or critical thinking were consulted. Their responses to the consultation were treated qualitatively. The results highlight the need to promote participatory activity and to design alternative proposals for music learning that invite the student to gain positive musical experiences. This will help to recognise different musical identities, promote intercultural musical diversity and encourage positive coexistence in and beyond the music classroom.  相似文献   

Neural Correlates of Face Familiarity in Institutionally Reared Children With Distinctive,Atypical Social Behavior          下载免费PDF全文

Ana R. Mesquita  Jay Belsky  Alberto Crego  Inês Fachada  Paula Oliveira  Adriana Sampaio  Isabel Soares 《Child development》2015,86(4):1262-1271

Although the impact of early adverse experience on neural processing of face familiarity has been studied, research has not taken into account disordered child behavior. This work compared the neural processing of familiar versus strangers' faces in 47 institutionalized children with a mean age of 54 months to determine the effects of (a) the presence versus absence of atypical social behavior and (b) inhibited versus indiscriminant atypical behavior. Results revealed a pattern of cortical hypoactivation in institutionalized children manifesting atypical social behavior and that inhibited children displayed larger neural response to a caregiver's face than to the stranger's, while indiscriminant children did not discriminate between stimuli. These findings suggest that neural correlates of face familiarity are associated with social functioning in institutionalized children.  相似文献   

What about a dimension of engagement,equity, and diversity practices? A critique of the next generation science standards   总被引：1，自引：0，他引：1  

Alberto J. Rodriguez 《科学教学研究杂志》2015,52(7):1031-1051

  相似文献   

Memoria a corto plazo y modalidad sensorial en sujetos ciegos y videntes: efectos de la similitud auditiva y táctil     

Emilio Fernández  Esperanza Ochaita  Alberto Rosa 《Infancia y Aprendizaje》2013,36(41):63-77

Resumen

El presente artículo tiene como objetivo analizar los procesos de codificación y almacenamiento en tareas que implican el sistema de la MCP. Con este fin, hemos utilizado material verbal y hemos manipulado el grado de similitud táctil y fonética de los estímulos para estudiar su efecto en la retención a corto plazo. Los resultados de los dos experimentos indican, por un lado, que los ciegos se sirven de formatos de naturaleza diferente (táctil-fonémica) para mantener la información a corto plazo y, por otro lado, que incrementan su capacidad de almacenamiento con la edad.  相似文献   

Match activity and physiological load during a clay-court tennis tournament in elite female players     

Fernandez-Fernandez J  Sanz-Rivas D  Fernandez-Garcia B  Mendez-Villanueva A 《Journal of sports sciences》2008,26(14):1589-1595

The aim of this study was to determine the match activity and physiological demands of women's tennis during a 3-day clay-court tennis tournament. The activity profile of eight players was determined by filming each competitive match with video cameras. Metabolic-perceptual measurements--blood samples and individual ratings of perceived exertion (RPE)--were taken while the players were sitting during permitted changeover breaks in play. The activity profile of the players was as follows: strokes per rally, 2.5 +/- 1.6; rally duration, 7.2 +/- 5.2 s; rest time between rallies, 15.5 +/- 7.3 s; effective playing time, 21.6 +/- 6.1%; work-to-rest ratio, 1:2.1. Blood lactate concentration [2.2 +/- 0.9 mmol x l(-1) (n = 50) vs. 2.2 +/- 0.7 mmol x l(-1) (n = 48)] and RPE values [12.2 +/- 2.4 (n = 57) vs. 12 +/- 2.3 (n = 57)] were not significantly different (P = 0.65-0.78) between service and return games. The results highlight the importance of taking these factors (i.e. activity patterns and physiological profile) into account when planning training strategies for competitive females players. As such, tennis training regimes should be adapted to the specific demands imposed by match-play in female players on a clay-court surface.  相似文献