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11.
This paper is part of a larger study that aims at highlighting students’ interpretations of the idea of the ‘Balance of Nature’,
as well as its use in their reasoning about the future of an ecosystem, in order to subsequently develop a learning environment
that might promote a reconsideration of its validity and usefulness. Our focus here is particularly set on whether and how
non biology-major students use this idea when making predictions about (a) the future of an ecosystem that is supposed to
have suffered a human-driven disturbance, and (b) the future of an ecosystem that is supposed to be protected against such
disturbances. Administering a questionnaire of 12 items - 4 of which concern us here - to 61 1st-year educational sciences
students at the University of Patras, we traced - among others - their reasoning about (a) the future of three ecosystems
(forest, sea, lake), supposed to have suffered different human-driven disturbances (fire, oil spill, new population introduction),
and (b) the future of a protected forest ecosystem of a national park. According to our findings, most of the students found
it very likely for a disturbed ecosystem to fully recover its initial state - mainly due to a ‘recovery process’ or inherent ‘recovery mechanisms’ - showing a strong belief in an extremely resilient ‘Balance of Nature’. Moreover, most of them appeared to believe that
if human-protected, an ecosystem will be in a continuous ‘balance’, while very few were skeptical enough to claim a non-predictable
future for it. 相似文献
12.
Georgios Malandrakis Stergios Gkitsas Evagelia-Zoi Bara 《Environmental Education Research》2019,25(10):1524-1551
AbstractThe present study aims to explore student-teachers’ (STs’) progress in understanding social urban sustainability and how it is affected through the development of digital stories and engagement in civic actions. Participants were 44 STs enrolled in a Department of Primary Education located in Northern Greece. Although participants were aware of the principles of sustainable development and education for sustainability, none of them had familiarity with social or urban sustainability. Three individual digital concept maps constructed before, intermediate and after the end of the course served as data sources. Both quantitative (significance testing, effect sizes, and confidence intervals) and qualitative (categories development) methods of analysis were implemented. Results indicate a sound improvement of STs’ understanding even in the intermediate concept maps with the most significant proposition gains associated with the society pillar. Moreover, despite the significant improvement in understanding of all main pillars of sustainability, this improvement was unbalanced because a minority of subcategories constituted the majority of STs’ propositions in all settings, indicating a strong and constructive combination between theory and praxis for the advancement of STs’ learning. 相似文献
13.
Alan M. Nevill Edward M. Winter Steve Ingham Adam Watts Georgios S. Metsios Arthur D. Stewart 《Journal of sports sciences》2013,31(9):1009-1016
Abstract The aim of the present study was to identify when body mass index (BMI) is unlikely to be a valid measure of adiposity in athletic populations and to propose a simple adjustment that will allow the BMI of athletes to reflect the adiposity normally associated with non-athletic populations. Using data from three previously published studies containing 236 athletes from seven sports and 293 age-matched controls, the association between adiposity (sum of 4 skinfold thicknesses, in millimetres) and BMI was explored using correlation, linear regression, and analysis of covariance (ANCOVA). As anticipated, there were strong positive correlations (r = 0.83 for both men and women) and slope parameters between adiposity and BMI in age-matched controls from Study 1 (all P < 0.001). The standard of sport participation reduced these associations. Of the correlations and linear-regression slope parameters between adiposity and BMI in the sports from Studies 2 and 3, although still positive in most groups, less than half of the correlations and slope parameters were statistically significant. When data from the three studies were combined, the ANCOVA identified that the BMI slope parameter of controls (5.81 mm · (kg · m?2)?1) was greater than the BMI slope parameter for sports (2.62 mm · (kg · m?2)?1) and middle-distance runners (0.94 mm · (kg · m?2)?1) (P < 0.001). Based on these contrasting associations, we calculated how the BMI of athletes can be adjusted to reflect the same adiposity associated with age-matched controls. This simple adjustment allows the BMI of athletes and non-athletes to be used with greater confidence when investigating the effect of BMI as a risk factor in epidemiological research. 相似文献
14.
Irini S. Parastatidou Georgios Doganis Yannis Theodorakis Symeon P. Vlachopoulos 《Measurement in physical education and exercise science》2013,17(2):119-134
Adequate response to mail health surveys by minority populations has proved problematic. The impact of mail survey design features utilized to promote Orthodox Jews' responses (N = 138; 82 eligible synagogue member households) to a mailed questionnaire used to measure walking behavior are described and assessed. An examination of response characteristics by wave as an estimate of nonresponse bias and calculations of response speed and cost-effectiveness were conducted. Response rates of 54.8% and 52.9% for eligible households and individuals, respectively, were accumulated by using 9 of 14 recommended mail survey techniques for this particular population (e.g., culturally appropriate salutation and closing, religious iconography, Talmudic aphorisms, and incentives linked to Hebraic numerology and the synagogue's building fund). Nonrespondents most frequently cited business, forgetfulness, or lack of topic salience as reasons for not responding. No differences on sociodemographic items and 9 of 11 continuous variables were observed by response wave; response speed was slowest in response to later mailing waves; and cost-effectiveness was maximal during postcard follow-up (E statistic = 3.74). Nonresponse bias may not be problematic with a > 50% response rate in this particular population. Front-loading incentives may prompt quicker response and improve cost-effectiveness. Specific design considerations for future consideration and testing are provided. 相似文献
15.
Pandelis Kiprianos Ivi Daskalaki Georgios B. Stamelos 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2012,58(5):675-699
This article examines the degree of integration of Roma and Gypsy children in formal education in the Peloponnese region of Greece. It is based on field research conducted by the University of Patras during the school year 2006/07 within the framework of the Greek Ministry of Education’s “Integration of Roma children in school” programme, funded by the European Union. Despite governmental incentives for poor families to enrol their school-aged children, school attendance of Roma and Gypsy children was found to decline from primary year one to primary year six, with hardly any of them entering secondary school at all. Besides looking at school attendance figures and Roma and Gypsy children’s proficiency in reading, writing and numeracy, this paper also considers gender, family composition, living conditions and economic situation, as well as culturally constructed perceptions of childhood and a person’s life cycle. The aim of this article is to highlight the contradictions and ambiguities involved in the process of incorporating Roma and Gypsy children in formal education, and to evaluate their school performance and assess their academic choices. 相似文献
16.
The focus of this study is on the role of achievement goals in students’ persistence. The authors administered 5 puzzles to 96 college students: 4 unsolvable and 1 relatively easy (acting as a hope probe). They examined whether and how persistence may deteriorate as a function of failing the puzzles, as well as whether and how persistence may rebound after an event of success. Time spent engaging in the task comprised the dependent variable persistence (representing a behavioral aspect of engagement). Results suggested that mastery-oriented students persisted significantly longer compared with performance approach–oriented, performance avoidance–oriented, and amotivated students across failure trials. However, performance approach–oriented students were more likely to rebound after experiencing success. Qualitative data provided insights into the affective processes that accompanied engagement with the task. 相似文献
17.
Petros Kostagiolas Nikolaos Korfiatis Panos Kourouthanasis Georgios Alexias 《International Journal of Information Management》2014
Regulation of clinical practice is a characteristic aspect of the medical profession. Regardless of whether this regulation derives from government-sourced guidelines or materials from government-sponsored institutions, it results in a high production of information resources (institutional information resources), which are disseminated to the clinical stuff in order to ensure compliance. In that case, the issue of credibility of these information resources might arise, since medical practice is characterized by a high frequency of change. The latter involves a continuous effort on the part of the clinical staff, which is motivated by work-related factors (e.g., need for compliance) or personal motivation (e.g., need for self-improvement). In this study we consider a simple trust model, according to which we assume that perceived trust is a direct antecedent of perceived credibility. We evaluate whether work-related or personal motivating factors influence the relation between perceived credibility and trust toward institutional information sources and how the effect of each factor affects this relation. Findings suggest that work-related factors have a higher impact on the relation between credibility and trust than personal motivation factors, while they are stressing the important role of hospital libraries as a dissemination point for government-sponsored information resources. 相似文献
18.
Georgios Fesakis Christina Sofroniou Elisavet Mavroudi 《Early Childhood Education Journal》2011,38(5):385-392
With the widespread use of the internet, more and more children get acquainted with its various uses at a young age while
an increasing number of teachers are designing learning activities that utilize various internet services. Toward this direction,
teachers need practical examples of pedagogically verified learning activities. This paper presents an experimental case study
of a learning activity meant for teaching preschoolers geometric concepts, which uses communication tools from the internet.
The activity constitutes a developmentally appropriate adaptation of a successful model, known as “Monster Exchange”, to kindergarten.
The paper presents the proposed adaptation, the experimental findings regarding the errors children mad, the difficulties
they encountered, and finally, the drawings that children produced, with the aim of evaluating the appropriateness and the
learning value of the activity. 相似文献
19.
Georgios Andronikos Adeboye Israel Elumaro Tony Westbury Russell J. J. Martindale 《Journal of sports sciences》2016,34(12):1124-1131
Physical and psychological differences related to birthdate amongst athletes of the same selection year have been characterised as the “relative age effects” (RAEs). RAEs have been identified in a variety of sports, both at youth and adult level, and are linked with dropout of athletes and a reduction of the talent pool. This study examined the existence, mechanisms and possible solutions to RAEs using qualitative methodology. Seven experts in the field of talent identification and development were interviewed. Inductive analysis of the data showed that, while there was mixed evidence for the existence of RAEs across sports, the eradication of RAEs was attributed to controllable features of the development environment. The factors reported included the structure of “categories” used to group athletes within the sport (e.g. age, weight, size, skills), recognition and prioritisation of long-term development over “short term win focus.” Education of relevant parties (e.g. coaches, scouts, clubs) about RAEs and the nature of “talent” within a long-term context was suggested, along with careful consideration of the structure of the development environment (e.g. delayed selection, provision for late developers, focus on skills not results, use of challenge). Implications for research and practice are discussed. 相似文献
20.
Georgios Tsaparlis 《Research in Science Education》1997,27(2):271-287
Students start the undergraduate quantum chemistry course with incomplete knowledge and many conceptual difficulties about
quantum-chemical concepts. This work investigated the impact an undergraduate quantum chemistry course has on students’ knowledge
and understanding of atomic orbitals, molecular orbitals and related concepts. A “post-factum” analysis of examination data
from this course reveals that students; do not have a clear understanding of the concepts of atomic and molecular orbitals
as well as of Slater determinants; have difficulty in understanding the conceptual similarity between real and complex mathematical
forms of atomic orbitals; confuse the various atomic orbital representations; and, do not realise the approximate nature of
atomic orbitals for many-electron atoms. Difficulties with other related concepts are revealed also. Some promising strategies
for instruction and suggestions for secondary and general chemistry curricula are discussed. 相似文献