排序方式： 共有33条查询结果，搜索用时 609 毫秒
1.
2.
Mauricio Garzon Olivier Dupuy Laurent Bosquet Anil Nigam Alain Steve Comtois Martin Juneau 《European Journal of Sport Science》2017,17(3):310-316
This study compared heart rate recovery (HRR) after incremental maximal exercise performed at the same external power output (Pext) on dry land ergocycle (DE) vs. immersible ergocycle (IE). Fifteen young healthy participants (30?±?7 years, 13 men and 2 women) performed incremental maximal exercise tests on DE and on IE. The initial Pext on DE was 25?W and was increased by 25?W/min at a pedalling cadence between 60 and 80?rpm, while during IE immersion at chest level in thermoneutral water (30°C), the initial Pext deployment was at a cadence of 40?rpm which was increased by 10?rpm until 70?rpm and thereafter by 5?rpm until exhaustion. Gas exchange and heart rate (HR) were measured continuously during exercise and recovery for 5?min. Maximal HR (DE: 176?±?15 vs. IE 169?±?12?bpm) reached by the subjects in the two conditions did not differ (P?>?.05). Parasympathetic reactivation parameters (ΔHR from 10 to 300?s) were compared during the DE and IE HR recovery recordings. During the IE recovery, parasympathetic reactivation in the early phase was more predominant (HRR at Δ10–Δ60?s, P?<?.05), but similar in the late phase (HRR at Δ120–Δ300?s, P?>?.05) when compared to the DE condition. In conclusion, incremental maximal IE exercise at chest level immersion in thermoneutral water accelerates the early phase parasympathetic reactivation compared to DE in healthy young participants. 相似文献
3.
Measuring innovation processes is a major concern for academics and firm managers. This study proposes an innovation capacity (IC) measure framework based on a set of 15 innovation management practices. Every practice is subdivided into multiple criteria which are directly observable phenomena or facts. The statistical method of value test and a multi-criteria approach are adopted to propose a typology of four groups of innovative firms (proactive, preactive, reactive, passive). The features observed on these groups of firms allow the determination of the firms’ innovation capacity and are useful for providing recommendations and practical actions for them, with a view to reinforcing it. Data from a sample group of 39 small and medium sized enterprises (SMEs) in the manufacturing industry in Lorraine, France were collected via a field survey and were fed into the model to determine the innovation capacity of the companies. 相似文献
4.
Miller CJ Miller SR Bloom JS Jones L Lindstrom W Craggs J Garcia-Barrera M Semrud-Clikeman M Gilger JW Hynd GW 《Annals of dyslexia》2006,56(1):83-102
The double-deficit hypothesis of dyslexia posits that reading deficits are more severe in individuals with weaknesses in phonological awareness and rapid naming than in individuals with deficits in only one of these reading composite skills. In this study, the hypothesis was tested in an adult sample as a model of reading achievement. Participants were parents of children referred for evaluation of reading difficulties. Approximately half of all participants reported difficulty learning to read in childhood and a small subset demonstrated ongoing weaknesses in reading. Structural equation modeling results suggest that the double-deficit hypothesis is an accurate model for understanding adult reading achievement. Better reading achievement was associated with better phonological awareness and faster rapid automatized naming in adults. Posthoc analyses indicated that individuals with double deficits had significantly lower reading achievement than individuals with single deficits or no deficits. 相似文献
5.
Michael Canu Mauricio Duque Cécile de Hosson 《European Journal of Engineering Education》2017,42(1):32-44
ABSTRACTEngineering students on control courses lack a deep understanding of equilibrium and stability that are crucial concepts in this discipline. Several studies have shown that students find it difficult to understand simple familiar or academic static equilibrium cases as well as dynamic ones from mechanics even if they know the discipline’s criteria and formulae. Our aim is to study the impact of a specific and innovative classroom session, containing well-chosen situations that address students’ misconceptions. We propose an example of Active Learning experiment based both on the Didactical Engineering methodology and the Conceptual Fields Theory that aims at promoting a conceptual change in students. The chosen methodology allows, at the same time, a proper design of the student learning activities, an accurate monitoring of the students’ rational use during the tasks and provides an internal tool for the evaluation of the session’s efficiency. Although the expected starting conceptual change was detected, it would require another activity in order to be reinforced. 相似文献
6.
Alba E. Mustaca Fabian Gabelli Mauricio R. Papini Peter Balsam 《Learning & behavior》1991,19(2):125-138
Appetitive contextual conditioning in rats and ringdoves was investigated in six experiments. In Experiment 1, differential contextual training produced greater anticipatory activity in rats in the presence of a context paired with food than it did in rats in the presence of a different context in which food was never presented. Furthermore, the rats showed a preference for the context associated with food when they were given a simultaneous choice test between contexts. In Experiment 2, rats were more active in and preferred a context associated with a variable-time 30-sec (VT30) schedule as opposed to a VT180 schedule. Experiment 3 was a between-subjects replication of the previous experiment. As expected, rats exhibited significantly more anticipatory activity in a context in which food had been presented on a VT30 schedule than they did in a context in which food had been presented on a VT180 schedule. Experiment 4 showed that anticipatory activity was a reflection of context-US associations in ringdoves, and in Experiments 5 and 6, ringdoves also exhibited an inverse relationship between the. amount of anticipatory activity and the length of the interreinforcement interval (IRI). These results reveal a relation between ERI and contextual conditioning opposite from that obtained in studies of aversive conditioning. 相似文献
7.
Ivã Gurgel Mauricio Pietrocola Graciella Watanabe 《Cultural Studies of Science Education》2016,11(2):349-370
In recent decades, changes in society have deeply affected the internal organization and the main goals of schools. These changes are particularly important in science education because science is one of the major sources of change in peoples’ lives. This research provided the opportunity to investigate how these changes affect the way teachers develop their classroom activities. In this work, we focus on science as part of the cultural identity of a society and how this identity affects the process of teaching and learning inside the classroom. Other works have shown that certain social characteristics such as gender, race, religion, etc., can create a cultural barrier to learning science. This results in an obstacle between those particular students and the science that is taught, hindering their learning process. We first aim to present the notion of identity in education and in other related fields such as social psychology and sociology. Our main purpose is to focus on identity in a school setting and how that identity affects the relationship students have with the science content. Next, we present and analyze an intervention in the subject of Modern and Contemporary Physics composed by a sequence of activities in a private school in the region of Sao Paulo State, Brazil. This intervention serves to illustrate how scientific topics may be explored while considering aspects of cultural differences as an obstacle. The intervention was completed in two steps: first, in the classroom with a discussion concerning scientific works and nationality of scientists, with one being a Brazilian physicist; second, taking students to visit a particle collider at the University of São Paulo. One of the results of our research was realizing that students do not perceive science as something representative of the Brazilian cultural identity. At the same time, the activity gave the students the opportunity to make the connection between doing physical sciences at an international level and the national level in Brazil. The findings of this study suggest that it is possible to reshape the cultural identity of Brazilian students. 相似文献
8.
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
9.
10.
Lezama‐Solano Adriana Castro Mauricio Chambers Delores Timberg Loreida Koppel Kadri Chambers Edgar Huizi Yu 《Journal of Food Science Education》2019,18(4):78-86
A globalized world requires research to transcend geographical boundaries; this includes training students in international collaborative research. The purpose of this project was to identify the benefits, opportunities, and challenges of students from two universities (Kansas State Univ. and Tallin Univ. of Technology) working on an international research project together. For this purpose, six graduate students from the Center for Sensory Analysis and Consumer Behavior, Kansas State Univ., partnered with 20 Food Science major students from a Product Development class at Tallinn Univ. of Technology. Students worked together by distance in a partnership developing a rye bread sensory lexicon for systematically understanding the sensory properties of this product category, conducting Landscape analysis by using sensory mapping techniques on rye bread products from Northeast Europe for capturing the market complexity and to identify opportunity for new product development and new products concepts. Students from Kansas then went to Estonia for further meetings. After the trip, students and professors were asked for their feedback. Results showed that students identify learning food trends from another country as the main benefit of their international collaboration, followed by intercultural skills and knowledge transfer. Language and difference in time zones, as well as educational backgrounds, were identified by students as the main challenges of the collaboration. When US students were asked to rate the learning outcomes stated in the syllabus, understanding the cultural characteristics of Estonia was the one scored highest. Professors mentioned this opportunity is unique because it gives a cultural component programs usually not only an offer and a chance to develop time management skills by working across divergent time zones, but also to practice options for managing language barriers. This project shows that it is possible to setup a partnership between students across different countries and have a positive outcome that includes unique learning experiences for students; especially in terms of time and project management. 相似文献