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排序方式: 共有186条查询结果,搜索用时 15 毫秒
31.
Antonio Mauricio F.L. Miranda de S Danton D. Ferreira Edson W. Dias Eduardo M.A.M. Mendes Leonardo B. Felix 《Journal of The Franklin Institute》2009,346(9):841-853
The present work deals with recent results on the sampling distribution of the magnitude-squared coherence (also called just coherence) estimate between a random (Gaussian) and a periodic signal, in order to obtain analytical critical values, alternative expressions for the probability density function (PDF) as well as the variance and bias of the estimate. A comparison with the more general case of coherence estimation when both signals are Gaussian was also provided. The results indicate that the smaller the true coherence (TC) values the closer both distributions become. The behaviour of variance and bias as a function of the number of data segments and the TC is similar for both coherence estimates. Additionally, the effect of a normalizing function (Fisher's z transform) in the coherence estimated between a random and a periodic signal was also evaluated and normality has been nearly achieved. However, the variance was less equalized in comparison with coherence estimate between two Gaussian signals. 相似文献
32.
This article presents and discusses the findings of a research project, the main objective of which is to identify curriculum components that promote personal development as a nuclear part of teacher professional identity formation through pre-service teacher education. Curriculum is viewed as an ecological scenario with different subsystems and both as formal and informal. Identity formation is conceived as an ever-provisional result of a double transaction: the biographical one and the relational one. The curricula of four different historical periods of pre-service teacher education in Portugal and the professional identity of teachers trained within them were characterised through collection and analysis of documents and biographical narratives. Crossing results from the four periods, the quality of school climate emerges as an important variable to the quality of the teachers’ identity. The lifelong learning ethos seems to emerge when the training curriculum connects everyday learning with everyday life, namely by urging the students’ involvement in school life, peer learning activities and peer and teacher educators’ informal learning activities. 相似文献
33.
Ana Cristina Torres Amélia Lopes Jorge M. S. Valente Ana Mouraz 《Teaching in Higher Education》2017,22(7):822-838
Peer Observation of Teaching has raised a lot of interest as a device for quality enhancement of teaching. While much research has focused on its models, implementation schemes and feedback to the observed, little attention has been paid to what the observer actually sees and can learn from the observation. A multidisciplinary peer observation of teaching program is described, and its data is used to identify the pedagogical aspects to which lecturers pay more attention to when observing classes. The discussion addresses the valuable learning opportunities for observers provided by this program, as well as its usefulness in disseminating, sharing and clarifying quality teaching practices. The need for further research concerning teacher-student relationships and students’ engagement is also suggested. 相似文献
34.
Silvia Casian Amélia Lopes Fátima Pereira 《The International Journal of Art & Design Education》2018,37(3):399-412
This article focuses on the emotions of 13 and 14 year‐old students related to visual art education activities. Our aim is to understand the interference of the students' emotions with the processes of the creation and reception of their own pictures, as well as their characteristics in an art education context. The article adopts a Vygotskian theoretical perspective about emotion and aesthetic education that refers to the biopsychological nature of emotion and its cultural determination. The need to transform emotions in art activities is stressed and the teenagers' pictures are interpreted as a means of communication. The data collection was based on questionnaires and interviews with seventh and eighth grade secondary school students. It is concluded that students' emotions are not only present in the creative process and in its result, but also that they could have a significant positive or negative impact on students' motivation and achievement behaviour in art education classes. In this context, the students' pictures, acting as stimuli, may evoke their emotions. 相似文献
35.
Lopes Henrique McKay Veronica 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2020,66(4):575-602
International Review of Education - In combating pandemics, more can be gained by changing citizens’ behaviours than by relying solely on the medical route. In the current COVID-19 pandemic,... 相似文献
36.
J. Bernardino Lopes Julia Branco Maria Pilar Jimenez-Aleixandre 《Research in Science Education》2011,41(5):787-809
According to the literature, there is a very important corpus of knowledge that allows for the investigation of some dimensions
of ‘learning experience’ provided to students, in relation to epistemic, pedagogical and meta-cognitive practices. However,
in the literature, there is little investigation into the invariance (or not) of the characteristics of students’ learning
experience while being taught a scientific subject by the same teacher. This paper suggests that the relationship between
the learning experience provided and the competences developed is not properly highlighted. This paper analyses the learning
experience provided to students in epistemic, pedagogical and meta-cognitive terms. The students were taught the proprieties
and applications of light by one teacher, in three classes, over 7 weeks. We analysed the data in each referred learning experience,
using a pre-defined category system. The students’ competences were evaluated by a competence test. The epistemic demand of
each item and the students’ performances were also analysed. Our findings point to the non invariance of learning experiences
provided to students and the influence of some dimensions of learning experiences provided in the development of certain competences.
These findings and their implications are contextualized and discussed. 相似文献
37.
Performance equivalency between computer‐based and traditional pen‐and‐paper assessment: A case study in clinical anatomy 下载免费PDF全文
Bruno Guimarães José Ribeiro Bernardo Cruz André Ferreira Hélio Alves Ricardo Cruz‐Correia Maria Dulce Madeira Maria Amélia Ferreira 《Anatomical sciences education》2018,11(2):124-136
The time, material, and staff‐consuming nature of anatomy's traditional pen‐and‐paper assessment system, the increase in the number of students enrolling in medical schools and the ever‐escalating workload of academic staff have made the use of computer‐based assessment (CBA) an attractive proposition. To understand the impact of such shift in the assessment method, an experimental study evaluating its effect on students’ performance was designed. Additionally, students’ opinions toward CBA were gathered. Second‐year medical students attending a Clinical Anatomy course were randomized by clusters in two groups. The pen‐and‐paper group attended two sessions, each consisting of a traditional sectional anatomy steeplechase followed by a theoretical examination, while the computer group was involved in two similar sessions conducted in a computerized environment. At the end of each of the computer sessions, students in this group filled an anonymous questionnaire. In the first session, pen‐and‐paper group students scored significantly better than computer‐group students in both the steeplechase (mean ± standard deviation: 66.00 ± 14.15% vs. 43.50 ± 19.10%; P < 0.001) and the theoretical examination (52.50 ± 12.70% vs. 39.00 ± 21.10%; P < 0.001). In the second session, no statistically significant differences were found for both the steeplechase (59.50 ± 17.30% vs. 54.50 ± 17.00%; P = 0.085) and the theoretical examination (57.50 ± 13.70% vs. 54.00 ± 14.30%; P = 0.161). Besides, an intersession improvement in students’ perceptions toward CBA was registered. These results suggest that, after a familiarization period, CBA might be a performance equivalent and student accepted alternative to clinical anatomy pen‐and‐paper theoretical and practical examinations. Anat Sci Educ 11: 124–136. © 2017 American Association of Anatomists. 相似文献
38.
Omar Schneider Amarílio Ferreira Neto André da Silva Mello Wagner dos Santos Sebastião Josué Votre 《Sport, Education and Society》2016,21(7):1053-1070
This study investigates the American presence and influences in the physical education press to understand the way in which that presence influenced and contributed to the production of a sports culture in the first half of the twentieth century. As historical sources, the study uses periodicals in the field that were published in the period 1932–1950. As a theoretical frame of reference, it uses the repertoire of the New Cultural History in terms of strategy, tactics and devices. It is written in a narrative way, following Ginzburg's style, presenting data and contextualizing them with the historic scene. Clues enabled us to infer that the American presence, which was catalysed by the Brazilian Young Men's Christian Association (YMCA), sought to shape a sports culture from physical education and society. This effort reflected the yearning of Brazilian intellectuals for modernisation and an attempt at cultural colonisation by the government of the USA. 相似文献
39.
João Venâncio Diogo Lopes Joaquim Lourenço Fernando Ribeiro 《Sports biomechanics / International Society of Biomechanics in Sports》2016,15(2):162-168
This study aimed to compare knee joint position sense of roller hockey players with an age-matched group of non-athletes. Forty-three male participants voluntarily participated in this cross-sectional study: 21 roller hockey players (mean age: 23.2 ± 4.2 years old, mean weight: 81.8 ± 9.8 kg, mean height: 180.5 ± 4.1 cm) and 22 age-matched non-athletes (mean age: 23.7 ± 3.9 years old, mean weight: 85.0 ± 6.2 kg, mean height: 181.5 ± 5.0 cm). Knee joint position sense of the dominant limb was evaluated using a technique of open-kinetic chain and active knee positioning. Joint position sense was reported using absolute, relative and variable angular errors. The main results indicated that the group of roller hockey players showed significantly lower absolute (2.4 ± 1.2º vs. 6.5 ± 3.2º, p ≤ 0.001) and relative (1.7 ± 2.1º vs. 5.8 ± 4.4º, p ≤ 0.001) angular errors in comparison with the non-athletes group. In conclusion, the results from this present study suggest that proprioceptive acuity, assessed by measuring joint position sense, is increased in roller hockey players. The enhanced proprioception of the roller hockey players could contribute to injury prevention and improved performance during sporting activities. 相似文献
40.
Wendell Arthur Lopes Jo?o Carlos Locatelli Caroline Ferraz Sim?es Rogério Toshiro Passos Okawa 《运动与健康科学(英文)》2021,(4):507-509
We read with great interest the study by Way et al.1 pub-lished in this journal, which described and compared the acute changes in central arterial stiffness (A... 相似文献