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Leonardo S. Fortes Dalton De Lima-Junior Lenamar Fiorese José R. A. Nascimento-Júnior Arnaldo L. Mortatti Maria E. C. Ferreira 《Journal of sports sciences》2020,38(5):552-558
ABSTRACTThe objective of this study was to analyse the effect of the use of social networks in smartphones or playing video games on the passing decision-making performance in professional soccer athletes. Participants were 25 male professional soccer athletes (mean ± SD: age 23.4 ± 2.8 years). The participants performed three randomised conditions divided into three groups: control (CON), smartphone (SMA), and video game (VID). Before and after each experimental condition, the Stroop Task assessed the level of induced mental fatigue. Then, the athletes performed a simulated soccer match. A CANON® camera recorded the matches for further analysis on passing decision-making performance. A group effect was identified (p < .01) with impairment on passing decision-making performance for the SMA (p = .01, ES = 0.5) and VID (p = .01, ES = 0.5) conditions. We concluded that the use of social networks on smartphones and/or playing video games right before official soccer matches might impair the passing decision-making performance in professional soccer athletes. 相似文献
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The AC electrothermal technique is very promising for biofluid micropumping, due to its ability to pump high conductivity fluids. However, compared to electroosmotic micropumps, a lack of high fluid flow is a disadvantage. In this paper, a novel AC multiple array electrothermal (MAET) micropump, utilizing multiple microelectrode arrays placed on the side-walls of the fluidic channel of the micropump, is introduced. Asymmetric coplanar microelectrodes are placed on all sides of the microfluidic channel, and are actuated in different phases: one, two opposing, two adjacent, three, or all sides at the same time. Micropumps with different combinations of side electrodes and cross sections are numerically investigated in this paper. The effect of the governing parameters with respect to thermal, fluidic, and electrical properties are studied and discussed. To verify the simulations, the AC MAET concept was then fabricated and experimentally tested. The resulted fluid flow achieved by the experiments showed good agreement with the corresponding simulations. The number of side electrode arrays and the actuation patterns were also found to greatly influence the micropump performance. This study shows that the new multiple array electrothermal micropump design can be used in a wide range of applications such as drug delivery and lab-on-a-chip, where high flow rate and high precision micropumping devices for high conductivity fluids are needed. 相似文献
5.
Adrienne Alton-Lee Christine Rietveld Lena Klenner Ngaio Dalton Cathy Diggins Shane Town 《International Journal of Inclusive Education》2013,17(3):179-210
This paper provides an account of a teacher's use of theory as a tool to develop inclusive practice through a social studies programme in a new entrant class. The account illustrates the ways in which the teacher drew on research to assist in the facilitation of an inclusive educational environment. Presented are research case studies the teacher encountered in an in-service teacher education programme, and the ‘social constructionist’ and ‘personal tragedy’ models that were used as theoretical tools to assist the teacher's planning and teaching practice. Mounted cameras, broadcast microphones and pre- and post-unit interviews with the teacher and students were used to explore the lived culture of the classroom, and the nature and effectiveness of the strategies the teacher used. An ‘interrupted narrative’ methodology engages the reader in the interplay between research and theory in the research case studies. Four major strategies used by the teacher have been identified and these are presented as theoretical tools for other teachers and teacher educators to use, critique and develop to support inclusive practice in their own contexts. 相似文献
6.
Marie Dalton 《Community College Journal of Research & Practice》2013,37(1):43-44
Learning assistance is in increasing demand in postsecondary institutions. This study investigates the students accessing the services offered by the Learning Skills Center (LSC) in a Canadian community college. Students are compared with the general student body. Results indicate that students requesting assistance tend to be predominantly female and in their first year of study. Mature students appear to use the Center more readily than younger students. The increasing number of students who speak English as a second language may place special demand on the instructional techniques used by LSC staff. Suggestions are provided for increasing the student demand from underrepresented groups. 相似文献
7.
Michelle Dalton Alexander Kouker Martin O'Connor 《New Review of Academic Librarianship》2016,22(2-3):148-159
ABSTRACTBlogging has been associated with the Library and Information Science (LIS) community for some time now. Libfocus.com is an online blog that was founded in 2011. Its goal was to create a communal communication space for LIS professionals in Ireland and beyond, to share and discuss issues and ideas. The content of the blog is curated by an editorial team and features guest bloggers from across all sectors and experience levels. Using a qualitative methodological approach, open-ended surveys were conducted with twelve previous guest bloggers, in order to explore how and why Irish-based LIS professionals choose to communicate through blogging. It is hoped that this evidence will provide a greater understanding of both the value and effectiveness of blogging as an outreach and communication tool within the profession, helping both libraries and librarians to be more strategic in their use of it as a medium. 相似文献
8.
A. J. Dalton 《英语沙龙》2010,(4):14-15
本刊从2010年第1期起辟专栏连载英国大使馆文化处提供的系列稿件,为读者介绍英国文化,内容涵盖了假日、饮食、酒吧和英国皇室等方面。本栏目除文章外,每期还附有趣味小练习,另外,wordoftheday板块每期为读者介绍一个俚语。读者在深入领略英国文化底蕴的同时,还可学习到原汁原味的英文。本期文章介绍的是：英国的酒吧文化源远流长,极具特色。 相似文献
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Leonardo S. Fortes José R. A. Nascimento-Júnior Arnaldo L. Mortatti Dalton Roberto Alvas Araújo de Lima-Júnior Maria E. C. Ferreira 《Research quarterly for exercise and sport》2018,89(3):332-339
It seems that dehydration may impair decision-making performance in athletes. Purpose: This study aimed to investigate the influence of dehydration on passing decision-making performance in soccer players. Method: Participants were 40 male soccer players (Mage = 22.3 ± 2.3 years) who agreed to participate in the study and were randomly assigned to the following conditions: control (CON), dehydration (DEH), and euhydration (EUH). The players played in 2 games of 90 min in duration (2 45-min halves) followed by 2 15-min halves (overtime) with and without proper hydration. The Game Performance Assessment Instrument (GPAI) was considered for the analysis of passing decision making. Results: The GPAI analysis indicated effective reduction in the decision-making index in the DEH condition compared with the EUH and CON conditions, F(2, 38) = 31.4, p < .05, ES = 0.8. Conclusions: In conclusion, dehydration may be considered a mediating factor in the passing decision-making performance of male soccer athletes. 相似文献
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