Learn to use and use to learn: Technology in virtual collaboration experience     

Elena Karpova  Ana-Paula Correia  Evrim Baran 《The Internet and Higher Education》2009,12(1):45-52

This study examined how global learning teams utilized technology in a virtual collaboration to solve complex problems. The study offers an in-depth explanation of why and how the learning teams used technology to support computer-mediated communication. A model of technology application at different stages of virtual collaborative process is proposed. The model can be used to maximize potential of global teams and facilitate further integration of virtual collaboration into university curricula. Time difference and lack of nonverbal cues were identified as challenges the global teams faced. The benefits of virtual collaboration were the opportunities to: learn how to use technology in a meaningful way; practice using technology to solve problems; and broaden one's perspective by communicating with people from different cultures.  相似文献   

On becoming a civic‐minded instructional designer: An ethnographic study of an instructional design experience     

Farrah Dina Yusop  Ana‐Paula Correia 《British journal of educational technology : journal of the Council for Educational Technology》2014,45(5):782-792

This ethnographic study took place in a graduate course at a large research university in the Midwestern United States. It presents an in‐depth examination of the experiences and challenges of a group of four students learning to be Instructional Design and Technology professionals who are concerned with the well‐being of all members of a society, and wish to utilize their knowledge and skills to help solve social problems and improve people's lives. Building on the results of previous research, findings indicate that the course, designed using the Civic‐Minded Instructional Designers (CMID) framework, succeeded in enhancing students' civic‐minded agency, the group's purposeful and reflective acts that aim at addressing the educational needs of community members. The course was designed to mimic a small, multiteam Instructional Design and Technology consulting company offering professional‐level services free of charge. Community partners consisted of four real‐world clients to whom students addressed an instructional issue. Data were collected from observations, focus groups, individual interviews with students and community partners, and analyses of course artifacts and students' reflections. Students were found to diligently address community members' needs, give voice to their community partners, address sustainability of their projects, be sensitive to their community partners' perspectives and acknowledge their community partners as design partners. Challenges encountered include reconfiguring students' roles and building trustful relationships with their community partners. This study contributes a deeper understanding of the roles of instructional design professionals within larger social contexts. Lessons learned can inform the implementation of the CMID framework in other educational programs.  相似文献   

Ageing of brazilwood dye in wool – a chromatographic and spectrometric study     

Ana Manhita  Vanda Santos  Helena Vargas  António Candeias  Teresa Ferreira  Cristina Barrocas Dias 《Journal of Cultural Heritage》2013,14(6):471-479

Brazilwood was used in this work to dye wool mordanted with different amounts of copper(II) sulfate, alum and iron(II) sulfate. Two different dyeing methods were used: premordanting (MD) and simultaneous mordanting (M+D) procedures. In order to evaluate the influence of the mordant ion in the brazilein chromophore photodegradation, samples were subjected to artificial light ageing. Color measurements were made and, for the first time, LC-DAD-ESI-MS was used for chromophore analysis of the dyed fibers before and after light exposure. Mordant ion quantification was done after fiber acid digestion, by inductively coupled plasma-optical emission spectroscopy (ICP-OES) and flame atomic absorption spectroscopy (FAAS). Mordant metal ion, mordant bath concentration and dyeing procedure were found to have strong influence in the wool fiber hues. Color variation was more pronounced in the alum dyed samples. Overall, mordant quantification showed that the amount of metal ions found in the fibers is very small when compared to the original concentrations of the dyeing bath, being Cu the ion with greater affinity for the wool fibers. MD dyeing procedure yielded fibers with larger amounts of mordant metal ions and higher chromophore peak areas. Higher amounts of brazilein were extracted from wool mordanted with copper(II) sulfate. Finally, chromatographic analysis of the brazilwood dyed samples before and after light exposure resulted in the detection of Type C compound as an outcome of the photodegradation process.  相似文献   

The civic‐minded instructional designers framework: An alternative approach to contemporary instructional designers' education in higher education     

Farrah Dina Yusop  Ana‐Paula Correia 《British journal of educational technology : journal of the Council for Educational Technology》2012,43(2):180-190

This paper argues that an emphasis on training‐for‐the‐job approaches has distracted designers from thinking about the meaning of their profession and the grand purpose of practising instructional design. Drawing from literature in the fields of sociology and educational technology, this paper synthesises discourses on civic professionalism in instructional design and technology, and proposes a conceptual framework that highlights the roles and qualities of a civic‐minded instructional designer. It is claimed that a critical discussion on civic professionalism in the field of educational technology can offer an alternative perspective on educating instructional designers, and have practical implications on instructional design and technology curricula in higher education.  相似文献   

Patterns of accelerometer-derived sedentary time across the lifespan     

Diana A. Santos  Pedro B. Júdice  João P. Magalhães  Inês R. Correia  Analiza M. Silva  Fátima Baptista 《Journal of sports sciences》2013,31(24):2809-2817

ABSTRACT

We aimed to describe ST and its patterns on a national level. A hip-worn accelerometer (ActiGraph GT1M) was used to collect data during waking hours from 4575 Portuguese’ participants from 2007–2009 (2683 females) aged 10–102 years old. Data was presented by sex, in 5-years age intervals, and by adolescents (n=2833), adults (n=1122), and older adults (n=620). Lambda-mu-sigma (LMS) smoothed percentile curves were estimated. Girls, women, and older women spent 61, 57, and 64% of wear time in ST, respectively. In males, ST represented 57, 60, and 62% of wear time respectively for boys, men, and older men. Comparing to other age groups, older adults spent a larger amount of ST in bouts ≥30-min (women: 33%, men: 39% of total ST). The number of breaks/ST hour were: 10.6 in girls, 11.7 in women, and 9.6 in older women. In males, the number of breaks/ST hour were: 11.2, 10.5, and 8.5 for boys, men, and older men. In conclusion, ST was not consistently higher at older ages. Instead, we found that the potential critical moments in which ST may be higher are during adolescence and in the transition from adulthood into older adulthood, which represents critical periods for interventions.  相似文献   

From recording discrete actions to studying continuous goal-directed behaviours in team sports     

Vanda Correia  Duarte Araújo  Luís Vilar  Keith Davids 《Journal of sports sciences》2013,31(5):546-553

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An epidemiological study of number processing and mental calculation in Greek schoolchildren     

Koumoula A  Tsironi V  Stamouli V  Bardani I  Siapati S  Annika G  Kafantaris I  Charalambidou I  Dellatolas G  von Aster M 《Journal of learning disabilities》2004,37(5):377-388

The aim of this study was to validate and standardize an instrument for the diagnosis of developmental dyscalculia (mathematics disorder) in a Greek population and to obtain relevant epidemiological data. We used the Neuropsychological Test Battery for Number Processing and Calculation in Children (NUCALC) in a community sample of 240 students ages 7 to 11 years from urban and rural schools. There were no differences between genders in arithmetical performance; however, the effects of grade and socioeconomic level were significant. Prevalence was higher in the rural than in the urban area. A cross-cultural comparison of the Greek data with those obtained with the same instrument in other countries in schoolchildren of the same age was performed.  相似文献   

Observing collaborative problem‐solving processes and outcomes     

Felicia L. Wilczenski  Terry Bontrager  Paula Ventrone  Margaret Correia 《Psychology in the schools》2001,38(3):269-281

This study examined the problem of assessing group process in a collaborative problem‐solving situation. Students in seven collaborative groups worked on a two‐part math and logic problem—first individually, then in groups, and finally, individually again. Groups engaging in behaviors that facilitated collaboration obtained higher group and individual accuracy scores on a challenging problem set. High‐achieving students were influential in group problem‐solving outcomes. Group scores did not reflect the individual achievement of low‐achieving students. Examining collaborative group process and outcomes offers a new direction in functional and contextualized assessment for school psychologists. © 2001 John Wiley & Sons, Inc.  相似文献   

Children’s writing of argumentative texts: Effects of indirect instruction     

Vanda Lucia Zammuner 《European Journal of Psychology of Education - EJPE》1991,6(2):243-256

This study reports on grade 4 children’s (Ss) knowledge of constraints and characteristics of persuasive written requests (RQ).

1. All Ss wrote a first RQ asking money to improve their computer lab.
2. Experimental (E) and control (C) Ss evaluated 4 different RQ.
3. selected and ordered, out of 30 scrambled sentences, those appropriate for a “good” RQ.
4. A week later, E Ss had a collective “training discussion” on requests.
5. A week later, E and C Ss wrote a second RQ asking money for their science lab.

Results pertaining to different aspects of the produced RQ showed that the training did have some effects but both groups improved in their II RQ. The results were interpreted as suggesting that both groups actually learned what an appropriate request is by carefully evaluating the 4 requests and by constructing a request from a sentence list.  相似文献   

Continental Drift: A Discussion Strategy for Secondary School     

Paixão  Isabel  Calado  Sílvia  Ferreira  Sílvia  Salves  Vanda  Smorais  Ana M. 《Science & Education》2004,13(3):201-221

The paper describes a discussion strategy for secondary schoolstudents. The strategy focus the various dimensions of Science, especially the internal sociological and philosophicaldimensions. Students are expected to learn more about Science, namely the role of controversy for scientific progress.The article contains key questions for the students and guidelines for the teacher and also an analysis of the strategyin terms of the construction of Science and of learning processes.  相似文献