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1.
Undergraduate students in dyads (N = 72) were randomly and equally assigned to four groups, namely three teaching groups (General, Infusion, and Immersion) and the control group. Students were initially administered the California Critical Thinking Skills Test (CCTST). After instruction, each dyad's critical-thinking performance on an ill-defined problem was tested. A one-way ANCOVA, with the mean CCTST score of each dyad as covariate, indicated that the covariate and the teaching method were significant. Post hoc comparisons showed that the Infusion and the Immersion groups outperformed only the control group. Other quantitative and qualitative analyses revealed that students assigned to the different teaching groups exhibited diverse understandings of critical thinking. 相似文献
2.
Despite the widely acknowledged role of start-ups in economic development, little is known about their innovative activities compared with those of established firms. Drawing on a sample of 12,209 UK firms, we differentiate between services and manufacturing firms and, using a matching estimator approach, demonstrate that start-ups differ significantly from established firms in their innovation activities. We find that in services, being a start-up increases the likelihood of product innovations. However, in manufacturing, we find no significant differences in the likelihood of product innovation between start-ups and established firms. When examining the returns to innovation, we find that start-ups have a significant advantage both in services and in manufacturing. We explore the implications of these results for theory and policy. 相似文献
3.
In recent years studies have shown that sport can serve as a means towards conflict resolution. Since the time of British colonialism in the 1950s, and after its 1960 independence, Cyprus has experienced conflict between its two main communities – the Greek Cypriots and the Turkish Cypriots. The de facto division of the island in 1974 caused community isolation of the Turkish Cypriots who, for political reasons, have been excluded from participating in international sports competitions. This situation is more visible in football (soccer), the most popular sport on the island. In the last two years the two sides have been trying – so far unsuccessfully – to reinstate the Turkish Cypriots as members of the Official Cyprus Football Federation. This paper gives a background on what has preceded these attempts and discusses whether football is a means of reuniting the two communities, or whether it is used as a vehicle to further separation. 相似文献
4.
Nicos Valanides 《European Journal of Psychology of Education - EJPE》1999,14(1):109-127
The study investigated the structure and development of formal thought among tenth-, eleventh-, and twelfth-grade students. The subjects of the study were the total numbers of students attending the science, the economic, and the other sections of two higher secondary schools. Students' performance on a standardized Test of Logical Thinking (TOLT) was used as a measure of their cognitive abilities related to control of variables, proportional, probabilistic, correlational, and combinatorial reasoning. Students attending the different sections of study had significantly different TOLT performance, older students exhibited significantly better TOLT performance than younger ones, and boys performed significantly better on TOLT than girls did. The “rate” of development was, however, different for different reasoning modes and differences in school achievement between boys and girls did not tap differences in TOLT performance. Regression analysis showed that section of study, gender, grade level, and measures of school achievement contributed significantly to the prediction of TOLT performance. Factor analysis of performance on the ten TOLT items (two items from each reasoning mode) produced a two- and three-factor solution for the sample of boys and the sample of girls, respectively. The results indicate that different theoretical perspectives should be considered when evaluating cognitive development and that learning environments conducive to cognitive growth need to be designed and implemented. 相似文献
5.
Nicos Papadouris 《International Journal of Science Education》2013,35(5):755-782
We describe the implementation of a specially designed teaching innovation, embedded in the context of energy, for the promotion of specific aspects of the nature of science (NOS). We present empirical results from the implementation of the teaching and learning materials in three intact sixth-grade classes that involved a total of 64 students. We report on students' learning gains and we discuss the ensuing implications for teaching and learning with an emphasis on epistemic ideas. The integration of activities promoting understandings of energy and specific aspects of the NOS seems to work well in impacting on students' epistemic awareness. The findings reveal interesting aspects about the interplay between understandings of energy and the NOS. The article also illustrates that it is possible to teach productively specific aspects of a consensus view of the NOS from a fairly young age without having to rely on advanced science knowledge or explore the intricacies and differentiations across science disciplines. 相似文献
6.
Nicos Papadouris Constantinos P. Constantinou 《International Journal of Science Education》2013,35(6):663-682
A study has been made of how physics problems are attempted by school and by university students, in both examination and tutorial situations. The performance of the students is interpreted within the framework of a psychological model of learning which incorporates working memory capacity and disembedding ability. The implications of the results for teaching and for setting problems is emphasized, in that the same question in different forms may be testing different skills. 相似文献
7.
Nicos Valanides Maria Papageorgiou Charoula Angeli 《Journal of Science Education and Technology》2014,23(1):26-36
The study provides evidence concerning elementary school children’s ability to conduct a scientific investigation. Two hundred and fifty sixth-grade students and 248 fourth-grade students were administered a test, and based on their performance, they were classified into high-ability and low-ability students. The sample of this study was randomly selected and included 80 students, 40 fourth-grade and 40 sixth-grade students of low and high abilities. Students were specifically instructed to investigate the functioning of a device, to think aloud prior and after any experiment with the device, and to keep a record of their experimental results. The results showed that students were inclined to mainly collect evidence from the experimental space and failed to control variables during their investigation. The majority of the students had difficulties with effectively organizing collected data and failed to coordinate hypotheses with evidence. The significant interaction effect that was found between grade level and ability in terms of students’ investigation ability indicates that the existing gap between high- and low-ability students becomes bigger as students become older. Undoubtedly, ongoing research efforts for identifying patterns of children’s cognitive development will be most valuable as they can have important implications for the design of teaching scenarios and inquiry-based science activities conducive to accelerating students’ cognitive growth and scientific investigation abilities. 相似文献
8.
Mehdi Kordi Nicos Haralabidis Matthew Huby Paul R. Barratt Glyn Howatson Jon Stephen Wheat 《Journal of sports sciences》2019,37(1):36-41
Gross thigh volume is a key anthropometric variable to predict sport performance and health. Currently, it is either estimated by using the frustum method, which is prone to high inter-and intra-observer error, or using medical imaging, which is expensive and time consuming. Depth camera 3D-imaging systems offer a cheap alternative to measure thigh volume but no between-session reliability or comparison to medical imaging has been made. This experiment established between-session reliability and examined agreement with magnetic resonance imaging (MRI). Forty-eight male cyclists had their thigh volume measured by the depth camera system on two occasions to establish between-session reliability. A subset of 32 participants also had lower body MRIs, through which agreement between the depth camera system and MRI was established. The results showed low between-session variability (CV = 1.7%; Absolute Typical Error = 112 cm3) when measuring thigh volume using the depth camera system. The depth camera systematically measured gross thigh volume 32.6cm3 lower than MRI. These results suggest that depth camera 3D-imaging systems are reliable tools for measuring thigh volume and show good agreement with MRI scanners, providing a cheap and time-saving alternative to medical imaging analysis. 相似文献
9.
Efthimis N. Efthimiadis Nicos Malevris Apostolos Kousaridas Alexandra Lepeniotou Nikos Loutas 《Information Retrieval》2009,12(3):352-379
The study reports on a longitudinal and comparative evaluation of Greek language searching on the web. Ten engines, five global
(A9, AltaVista, Google, MSN Search, and Yahoo!) and five Greek (Anazitisi, Ano-Kato, Phantis. Trinity, and Visto), were evaluated
using (a) navigational queries in 2004 and 2006; and (b) by measuring the freshness of the search engine indices in 2005 and
2006. Homepage finding queries for known Greek organizations were created and searched. Queries included the name of the organization
in its Greek and non-Greek, English or transliterated equivalent forms. The organizations represented ten categories: government
departments, universities, colleges, travel agencies, museums, media (TV, radio, newspapers), transportation, and banks. The
freshness of the indices was evaluated by examining the status of the returned URLs (live versus dead) from the navigational
queries, and by identifying if the engines have indexed 32480 active (live) Greek domain URLs. Effectiveness measures included
(a) qualitative assessment of how engines handle the Greek language; (b) precision at 10 documents (P@10); (c) mean reciprocal
rank (MRR); (d) Navigational Query Discounted Cumulative Gain (NQ-DCG), a new heuristic evaluation measure; (e) response time;
(f) the ratio of the dead URL links returned, (g) the presence or absence of URLs and the decay observed over the period of
the study. The results report on which of the global and Greek search engines perform best; and if the performance achieved
is good enough from a user’s perspective. 相似文献
10.
Oksana Koryak Andy Lockett James Hayton Nicos Nicolaou Kevin Mole 《Research Policy》2018,47(2):413-427
We view ambidexterity as a paradox whereby its components, exploration and exploitation, generate persistent and conflicting demands on an organization. Drawing on the attention based view of the firm (ABV), we examine three antecedents of organizational ambidexterity that reflect ABV’s three principles ? the principle of focus of attention; the principle of situated attention; and the principle of structural distribution of attention. Specifically, we examine the influence of top management team (TMT) composition, whether or not the firm has a clear written vision, and the extent to which organizational attention is focused on investments in R&D, and continuous improvement. We empirically validate our model on a sample of 422 small and medium-sized enterprises in the UK and find that ambidexterity is supported by a blend of integration and differentiation approaches. 相似文献