Educational Interventions to Improve Dental Anatomy Carving Ability of Dental Students: A Systematic Review     

Daniele B. Conte  Milena Zancanaro  André Guollo  Luana R. Schneider  Rafael G. Lund  Sinval A. Rodrigues-Junior 《Anatomical sciences education》2021,14(1):99-109

This systematic review aimed to identify the level of impact of educational strategies for teaching tooth carving on the carving ability of undergraduate dental students. The PubMed-NCBI, Cochrane-CENTRAL, LILACS, Ibecs, BBO, Web of Science, and Scopus databases were searched in May 2019, for randomized controlled trials (RCTs) and two-arm non-randomized studies of interventions (NRSI) addressing educational interventions toward the dental carving of undergraduate students. Studies from the year 2000 until the search date, written in English, Portuguese, and Spanish were included. Study screening and data extraction were performed in duplicate and blinded. The data were presented narratively, considering the dental carving ability of students the primary outcome. The risk of bias was assessed using the RoB tool 2.0 and ROBINS-I, and the level of evidence was determined with GRADE. Of 3,574 studies, 6 were included, with 3 RCTs and 3 NRSIs. Very low level of evidence was provided from the NRSIs that flipped classroom (1 study; n = 140) and a student-driven revised module (1 study; n = 264) improved the carving ability of students. Additionally, there was moderate evidence of online complementary material (1 RCT; n = 30) and reinforcement class improving the carving ability of students (1 RCT; n = 29). The replacement of traditional classes by an instructional DVD (1 RCT; n = 73) and assessment of carving projects through digital systems (1 NRSI; n = 79) did not enhance the carving ability of students. Study design, risk of bias, and imprecision downgraded the level of evidence. There was a very low to moderate evidence on the effectiveness of student-driven educational approaches and complementary classes of dental anatomy in improving the dental carving ability of students.  相似文献   

Adaptive control of printing devices using fractional-order hold circuits adjusted through neural networks     

Rafael Bárcena  Ainhoa Etxebarria 《Journal of The Franklin Institute》2007,344(6):801-812

A connectionist method for autotuning the free parameter of a fractional-order hold (FROH) circuit in order to improve the performance of the digitally controlled systems is proposed. Such a technique employs multilayer perceptrons to approximate the mapping between the sampling period/continuous-time parameters of the estimated plant and the optimal value of the FROH adjustable gain. In this way, adaptive discretization systems to improve the stability properties of the resulting discrete-time zeros are implemented. Simulation results are presented in order to illustrate the properties of the complete system applied to two actual digitally controlled printing devices (HP 7090A and low-cost computer printer).  相似文献   

The impact of bilingual preschool education on the language development of Spanish-speaking children     

James L Rodríguez  Rafael M. Díaz  David DuranLinda Espinosa 《Early childhood research quarterly》1995,10(4)

This study addressed the question of what effect bilingual preschool education has on the Spanish and English language development of Spanish speaking children. This question was addressed by measuring the language proficiency of children enrolled in a bilingual preschool program and children who stay at home during the day. Three dimensions of language proficiency were examined: language reception, production, and verbal complexity. Using a repeated measures design, it was found that children enrolled in preschool gained proficiency in English at a faster rate while maintaining a similar level of Spanish proficiency as those children who stay at home during the day. Results of this study are discussed in terms of current issues in the early childhood education of non-English-speaking children.  相似文献   

Pedagogical differences during a science and language intervention for English language learners     

Tiberio Garza  Margarita Huerta  Rafael Lara-Alecio  Beverly J. Irby  Fuhui Tong 《The Journal of educational research》2018,111(4):487-496

The purpose of this study was to compare and describe 8 fifth-grade classrooms by their teachers pedagogy during a quasiexperimental, longitudinal, and field-based project focused on increasing English language learners' (ELLs') achievement in science and language. The larger study found statistically significant and positive intervention effects in favor of the treatment group on measures of science and language achievement. This study adds an in-depth analysis of the teacher pedagogical practices contributing to students' science and language achievement as captured by an observational instrument used during the project. Results from the analysis show how treatment teachers, when compared to control teachers, focused on activities promoting verbal and written interaction among the students and dense cognitive language use during science inquiry instruction. The findings support the importance of effectively using language in the science classroom to improve ELLs' science and language achievement. Implications for future research and practice are discussed.  相似文献   

Teaching CAD/CAM/CAE tools with project-based learning in virtual distance education     

Sola-Guirado  Rafael R.  Guerrero-Vacas  Guillermo  Rodr&#;guez-Alabanda  &#;scar 《Education and Information Technologies》2022,27(4):5051-5073

Education and Information Technologies - Computer-aided design, manufacturing and engineering technologies (CAD/CAM/CAE) are a mainstay in today’s industry and therefore they should be an...  相似文献   

Effect of Dental Course Cycle on Anatomical Knowledge and Dental Carving Ability of Dental Students     

Ademar Fonseca  Victoria B. da S. Guimarães  Sinval A. Rodrigues-Junior  Alisson A.R. Fonseca  Renato A. de Azevedo  Marcos B. Corrêa  Rafael G. Lund 《Anatomical sciences education》2022,15(2):352-359

This study assessed the effect of the course cycle on theoretical knowledge of dental morphology and the dental carving ability of dental students. Thirty-two dental students from the third semester (initial cycle) and 30 students from the eighth and tenth semesters of the dental course (end cycle) had their theoretical knowledge on dental morphology assessed using a questionnaire with ten closed questions. Their dental carving ability was also assessed using wax carvings in macro models of plaster (for the third [S3] and eight [S8] semesters) and natural-sized artificial teeth (for the tenth [S10] semester). The teeth chosen for the dental carving activity were #16 and #47. The scores were statistically analyzed using the t-test, Kruskal–Wallis test, and Mann–Whitney test (α = 0.05). Students from the initial cycle presented better theoretical knowledge than the other groups did (P < 0.007). No significant differences in carving score were found between the initial and end cycles (P > 0.05), although S10 students obtained a higher score for teeth #16 and #47 (P < 0.05). Natural-sized artificial teeth received a higher evaluation score in dental carvings than the macro models (P < 0.001). Within the limits of this study, it was possible to conclude that students from the initial cycle (S3) presented higher theoretical knowledge, whereas no difference in carving ability was observed between the initial and end cycles. The tenth semester (S10) students performed dental carvings with better quality. Furthermore, carvings in natural-sized artificial teeth presented better quality compared with the macro models.  相似文献   

Spanish Teachers' Epistemological and Scientific Conceptions: Implications for teacher education1     

Rafael Porlán Ariza  Rosa Martín Del Pozo 《欧洲师范教育杂志》2002,25(2-3):151-169

We present the theoretical framework, the central issues, bibliographic antecedents, and most relevant results of three studies concerning Spanish teachers' epistemological and scientific conceptions. The samples analysed present a majority tendency towards an absolutist view of knowledge and an empiricist conception of science. In our view, this represents a real obstacle to constructive and active professional development. Finally, we argue the need for an epistemological education of teachers that is closely linked to the design and development of the school curriculum, and that does not reproduce the traditional academicist-type models.  相似文献   

Examining entrepreneurial attributes of Latin American female university students     

Marcia Villasana  Rafael Alcaraz-Rodríguez  Mario Moisés Alvarez 《Gender and education》2016,28(1):148-166

The phenomenon of women engaging in entrepreneurship is expanding and becoming acknowledged as a valuable resource that must be institutionally and socially supported. Through entrepreneurship education, female students, as potential entrepreneurs, can develop and strengthen those skills and behaviours identified as characteristic of successful entrepreneurs. This paper explores four attributes associated with entrepreneurship (creativity, problem management, risk management, and self-confidence) of 1838 undergraduate students from 11 universities in Latin America (Mexico, Argentina, Brazil, Chile, Colombia, Costa Rica, El Salvador, Guatemala, and Uruguay) and one in Spain, used as a control group. By comparing the results for the male and female student population, self-confidence appears as an attribute that is present at the same level in both groups; statistically significant differences were reported for the other three attributes (creativity, problem management, and risk management). Entrepreneurship programmes can utilise such information to strengthen in female students those attributes for successful engagement in entrepreneurial activity.  相似文献   

Reading levels of Spanish deaf students     

Torres Monreal S  Santana Hernández R 《American annals of the deaf》2005,150(4):379-387

THE READING LEVELS of a population of 93 Spanish deaf students were examined. All study participants had prelingual profound hearing loss; their ages ranged from 9 to 20 years. All were enrolled in compulsory education during 2002-2003 in the Canary Islands (Spain). They were evaluated with sentence and text comprehension subtests from the Evaluation of Reading Processes of Primary Education Students, whose Spanish acronym is PROLEC (Cuetos, Rodríguez, & Ruano, 1996). A questionnaire on reading attitude was also used (Espín, 1987). Study results were consistent with those of previous research: Deaf students, at the end of their primary school education (mean age 13 years), have reading levels similar to or lower than the reading levels of hearing students at the onset of primary school education (mean age 7 years). These deaf students also have an indifferent attitude toward reading.  相似文献   

Psychometry of the Teacher's Sense of Efficacy Scale in Spanish Teachers' Education     

Rafael Burgueño  Alvaro Sicilia  Jesús Medina-Casaubón  Manuel Alcaraz-Ibañez  María-Jesús Lirola 《Journal of Experimental Education》2019,87(1):89-100

Our objective was to test the factorial validity of the different versions (TSES-24, TSES-12, and TSES-11) of the Teacher's Sense of Efficacy Scale in Spanish preservice teachers'. The participants were 358 preservice teachers. The confirmatory factor analysis showed inadequate fit indexes for both TSES-24 and TSES-12 but adequate fit indexes for TSES-11, which was invariant across gender. The reliability analysis showed appropriate values. The global factor for teachers' sense of efficacy and the three factors that constitute it positively predicted intrinsic motivation and life satisfaction. The global factor for sense of efficacy and the classroom management and student engagement factor negatively predicted amotivation. The results support the use of the TSES-11 three-factor model, rather than TSES-24 or TSES-12, for Spanish preservice teachers.  相似文献