Role of the Undergraduate Student Research Assistant in the New Millennium   总被引：1，自引：0，他引：1  

Thais Dutra Nascimento Silva  Lúcia Cristina da Cunha Aguiar  Jaqueline Leta  Dilvani Oliveira Santos  Fernanda Serpa Cardoso  Lúcio Mendes Cabral  Carlos Rangel Rodrigues    Helena Carla Castro 《CBE life sciences education》2004,3(4):235-240

In this study, we analyze the contribution of the undergraduate student who participates in the process of generating scientific data and developing a research project using Brazilian research as an example. Historically, undergraduate students have performed the critical role of research assistants in developing countries. This aspect has been underappreciated as a means of generating scientific data in Brazilian research facilities. Brazilian educational institutions are facing major age-related generational changes among the science faculty within the next 5–10 yr. A lack of adequate support for graduate students leads to a concern that undergraduates will not be interested in choosing research assistant programs and, subsequently, academic research careers. To remedy this situation it is important to focus on ways to encourage new research careers and enhance university–industry collaborations.  相似文献   

Environmental education research in Brazil     

Flávia Torreão Thiemann  Luiz Marcelo de Carvalho  Haydée Torres de Oliveira 《Environmental Education Research》2018,24(10):1441-1446

Abstract

This Editorial to the current collection provides a brief historical, cultural, regional and contemporary picture of environmental education research in Brazil. Its main purpose is to offer readers a short background and orientation to the collection, and in so doing, illustrate how its contributions relate to some wider tendencies, trends and issues in environmental education, as well as to different locales of research and knowledge generation in the country. Of particular note for environmental education in Brazil are: the effects of social and political backdrops and issues, the unique environments on which environmental education is grounded, and how environmental education research, in turn, may echo or influence particular educational and public policies.  相似文献   

Revealing the decision-making of dribbling in the sport of futsal     

Umberto Cesar Corrêa  Silvia Teixeira de Pinho  Silvia Letícia da Silva  Fabian Alberto Romero Clavijo  Thiago de Oliveira Souza  Go Tani 《Journal of sports sciences》2016,34(24):2321-2328

ABSTRACT

This study aimed to investigate why futsal players decide to dribble. For this purpose, we analysed 396 trials comprising the dribbles (n = 132), passes (n = 131) or shots (n = 133), performed by 70 male futsal players. Passing and shooting angles, and interpersonal distance, including their rates of change (velocity and variability), were regarded as measures of interpersonal coordination tendency and a comparison was made among dribbling, passing and shooting situations. In addition, the variables identified as constraints on deciding to dribble were analysed in relation to age categories, dribbling outcomes and futsal court zone. Results revealed that passing and shooting angles, and interpersonal distance showed higher variability in dribbling than in passing and shooting situations. The findings allowed us to conclude that decision-making on dribbling was influenced by the variabilities of passing angles as well as shooting and interpersonal distance, and that success in dribbling was affected by the variability of interpersonal distance. Such variabilities were interpreted concerning their meaning of risk and/or uncertainty in the execution of motor skills.  相似文献   

Effects of fast-velocity eccentric resistance training on early and late rate of force development     

Anderson Souza Oliveira  Rogério Bulhões Corvino  Fabrizio Caputo  Per Aagaard 《European Journal of Sport Science》2016,16(2):199-205

This study examined whether short-term maximal resistance training employing fast-velocity eccentric knee extensor actions would induce improvements in maximal isometric torque and rate of force development (RFD) at early (<100 ms) and late phases (>100 ms) of rising torque. Twenty healthy men were assigned to two experimental groups: eccentric resistance training (TG) or control (CG). Participants on the TG trained three days a week for a total of eight weeks. Training consisted of maximal unilateral eccentric knee extensors actions performed at 180°s-1. Maximal isometric knee extensor torque (MVC) and incremental RFD in successive 50 ms time-windows from the onset contraction were analysed in absolute terms (RFD_INC) or when normalised relative to MVC (RFD_REL). After eight weeks, TG demonstrated increases in MVC (28%), RFD_INC (0–50 ms: 30%; 50–100 ms: 31%) and RFD_REL (0–50 ms: 29%; 50–100 ms: 32%). Moreover, no changes in the late phase of incremental RFD were observed in TG. No changes were found in the CG. In summary, we have demonstrated, in active individuals, that a short period of resistance training performed with eccentric fast-velocity isokinetic muscle contractions is able to enhance RFD_INC and RFD_REL obtained at the early phase of rising joint torque.  相似文献   

萝卜硫烷对脑线粒体的影响:机理观点和未来发展方向     

Fernanda Rafaela JARDIM  Fhelipe Jolner Souza de ALMEIDA  Matheus Dargesso LUCKACHAKI  Marcos Roberto de OLIVEIRA 《Journal of Zhejiang University. Science. B》2020,21(4):263-279

有机硫化物萝卜硫烷(SFN)是一种有效的细胞保护剂,在体外和体内实验模型中均可促进抗氧化、抗炎、抗糖化和抗菌作用。因为氧化磷酸化系统的存在,所以线粒体是三磷酸腺苷(ATP)的主要产生部位。同时,线粒体也是具核人体细胞中产生活性氧的主要场所。线粒体损伤在多种人类疾病中起着重要作用,包括神经退行性病变和代谢异常。本文描述和讨论了SFN调节哺乳动物细胞中线粒体功能和动力学的作用和机理,以及其对肿瘤细胞中线粒体促凋亡途径的促进作用。SFN对线粒体的调节作用使得它在一定程度上被认为是一种细胞保护剂。本文还指出了几个需要通过进一步实验解决的问题,即未来的可能研究方向,这可能会对该领域的研究人员具有指导作用。  相似文献   

Botany and environmental education in elementary school in Brazil: articulating knowledge,values, and procedures     

Jerônimo de Oliveira Loureiro  Rossano André Dal-Farra 《Environmental Education Research》2018,24(12):1655-1668

Abstract

The increasing urbanization and alienation from nature reduce children’s opportunities to interact with plants and challenge teachers to devise educational practices that contribute to learning botany. This study presents the results of activities developed in a Brazilian school through explorations, drawings, dried and pressed specimens, and semi-structured interviews. The data were evaluated using mixed methods analysis. Leaves were the structure that was most frequently drawn by 1st- and 2nd-year students, followed by stems. Among students in their 3rd, 4th, and 5th years, more emphasis was on flowers and their detailed morphological structures. The 1st- and 2nd-year students included non-living elements and the surrounding environment in their drawings, whereas the older students focused on the plant itself. These particularities point to methods of teaching botany in context and link students’ specific knowledge to values and practices that contribute to an environmental education that aims to minimize the utilitarian view of nature and move towards a view of human beings as integrated and interdependent with other living and non-living elements.  相似文献   

Human Anatomy: Teaching–Learning Experience of a Support Teacher and a Student with Low Vision and Blindness     

Carolina Rodrigues Mendonça  Karla Tais de Oliveira Souza  Jalsi Tacon Arruda  Matias Noll  Nilza Nascimento Guimarães 《Anatomical sciences education》2021,14(5):682-692

In Brazil, a federal law ensures that all students with disabilities are entitled to enrollment in higher education institutions. Higher courses in human anatomy stand out for their complexity in both theoretical and practical contents. Therefore, adaptation is required to accommodate students with special educational needs. This study aimed to describe the experience of a Support Teacher in the development of inclusive pedagogical practices for the discipline of Human Anatomy offered in the physiotherapy course for a student with low vision and blindness. The challenges and learning difficulties faced by a visually impaired student are reported. Qualitative analysis was performed by interviewing a student with low vision and blindness and a Support Teacher. The audio recordings were transcribed, categorized, and analyzed using content analysis. The Support Teacher created schematics and drawings of anatomical structures, reviewed theoretical and practical contents, developed adaptations of the examinations, and applied palpatory anatomy to facilitate the student’s learning process. The findings illustrate that the student faced the greatest difficulty in dealing with the emotional aspects, due to the inability to visualize the anatomical details in human cadavers. Thus, the presence of a Support Teacher was fundamental to ensure that the student could learn the content and overcome this limitation. In conclusion, personalized adaptation, commitment, and collaborative work between the Support Teacher and students with low vision and blindness improve their learning conditions.  相似文献   

Students’ and teachers’ perspectives about quality of engineering education in Portugal     

Cristina G. Oliveira  Paulo C. Oliveira  Nilza Costa 《European Journal of Engineering Education》2012,37(1):49-57

Quality in higher education is a subject of increasing importance. This idea can be supported by looking at different sources, namely, the scientific literature, national and transnational governments’ policies, such as those emerging from the Bologna Process. Also, the internationalisation of higher education and, within it, students’ and staff mobility among institutions, has brought to the agenda the quality issue, particularly with regard to the teaching and learning process. Several authors argue that the meaning of quality depends on who defines it. This article focuses on a study that looks at how teachers and students in higher education institutions, in Portugal and in the domain of Engineering, see the quality issue. Data was collected through interviews to teachers (six) and students (38) in two different Portuguese institutions. The results indicate that, although teachers and students refer to the same dimensions that influence quality, they have different perspectives about their importance. From the point of view of the authors, this discrepancy requires some pedagogical actions in the context where the study was developed and, also, further research to see if the same tendency exists in different settings.  相似文献   

Three-feature model to reproduce the topology of citation networks and the effects from authors’ visibility on their h-index     

Diego Raphael Amancio  Osvaldo Novais Oliveira  Luciano da Fontoura Costa 《Journal of Informetrics》2012,6(3):427-434

Various factors are believed to govern the selection of references in citation networks, but a precise, quantitative determination of their importance has remained elusive. In this paper, we show that three factors can account for the referencing pattern of citation networks for two topics, namely “graphenes” and “complex networks”, thus allowing one to reproduce the topological features of the networks built with papers being the nodes and the edges established by citations. The most relevant factor was content similarity, while the other two – in-degree (i.e. citation counts) and age of publication – had varying importance depending on the topic studied. This dependence indicates that additional factors could play a role. Indeed, by intuition one should expect the reputation (or visibility) of authors and/or institutions to affect the referencing pattern, and this is only indirectly considered via the in-degree that should correlate with such reputation. Because information on reputation is not readily available, we simulated its effect on artificial citation networks considering two communities with distinct fitness (visibility) parameters. One community was assumed to have twice the fitness value of the other, which amounts to a double probability for a paper being cited. While the h-index for authors in the community with larger fitness evolved with time with slightly higher values than for the control network (no fitness considered), a drastic effect was noted for the community with smaller fitness.  相似文献   

Lie Acceptability: A Construct and Measure     

Carrie M. Oliveira  Timothy R. Levine 《Communication Research Reports》2013,30(4):282-288

People likely hold different opinions about deceptive communication. Lie acceptability refers to an individual's attitude about deceptive communication. A self-report measure of lie acceptability was updated and refined, and preliminary data (N = 312) consistent with validity were reported. CFA indicated acceptable fit to the a priori unidimensional model. As anticipated, the lie acceptability scale was positively related to narcissism and negatively associated with religiosity. The scale also predicted likelihood of use ratings of equivocal messages, deceptive omissions, and outright lies. An anticipated sex difference, however, was not replicated. The potential utility of the scale in communication research is discussed.  相似文献