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81.
82.
At the Kwame Nkrumah University of Science and Technology (KNUST) in Ghana, first year enrolment increased by 1466.81% from 708 in 1961/1962 to 11,093 in 2011. In the 2013/2014 academic year, the total student population was 45,897. There are now five main admission paths, comprising regular, mature, fee paying, less endowed, and protocol/staff admissions. The number of dropouts and fails has risen steeply, for example, at the end of the 2013/2014 academic year, roughly 22.11% of the 1239 students were either withdrawn or repeated at the Faculty of Social Sciences due to non-performance. This paper examined the impact of the admission path and family structure on university students’ academic outcomes. A logistic model was applied to individual-level data obtained from 1000 students enrolled at the Faculty of Social Sciences in the university. The results indicated that the regular and mature admission paths have a positive impact on performance whilst the fee-paying admission path has a significant negative influence on academic performance. It was also found that the family structure (living with the father and mother and the mother only) has a significant positive influence on performance. The study recommended that lecturers should be motivated to conduct additional classes for academically weak students. Counselling units should also identify students who experienced disruption in home life and raise their aspirations. 相似文献
83.
In this article we focus on ‘cooperative engineering’, in which teachers and researchers co-design didactic sequences. In the first part of the article, we present cooperative engineering by describing some of the main principles on which it is grounded. The second part is dedicated to a case study, which enables us to illustrate some elements of the collective work in a specific cooperative design in kindergarten. The designed learning game, the ‘Treasure Game’, aimed to assist kindergarten students to build a system of graphical representations, which was implemented in a series of phases in which students were asked to memorise a series of items with increasing levels of difficulty. The game demonstrated the students’ growing competence in recalling items using strategies such as making lists and working collaboratively to collectively recall items through a ‘treasure box’. In the third part of the article, we show how this case study embodies some of the main principles put forward in the first part. 相似文献
84.
We trained 4 pigeons in a numerical bisection task to discriminate between pairs of keylight flashes with a ratio of 1∶3 (2
vs. 6, 4 vs. 12, and 8 vs. 24) that were presented in a sample phase. Responses to the blue key were reinforced after a sequence
of a larger number of flashes, and responses to the white key were reinforced after a sequence of a smaller number of flashes.
The intervals between flashes in the sample phase were randomized to attenuate the covariation of temporal cues with flash
number. Pigeons responded accurately in each of the discriminations, with typically 85%–90% correct responses. Transfer tests
showed that the proportion of large responses increased with number and performance generalized to larger values outside the training ranges. Psychometric functions
superposed when plotted on a relative scale, and estimates of Weber fractions were approximately constant, suggesting that
variability was scalar. However, contrary to previous research in nonhumans, bisection points were located at the arithmetic,
not geometric, mean. Hierarchical logistic regressions confirmed significant control over responding by number beyond that
attributable to temporal cues. These results show that pigeons are able to respond accurately in a relative numerosity discrimination
with successively presented visual stimuli, although the nature of the numerical representation and response rule remains
unclear. 相似文献
85.
This paper investigates one aspect of the teacher's role which is likely to cause stress and in many cases some personal grief. A significant number of teachers at some point in their career find themselves offering support to pupils who have experienced loss. Using a small-scale questionnaire, the writers investigate teachers' personal perspectives on this work. The results showed the personal distress that teachers can experience and the high self-expectations they are likely to have of themselves. The kind of support that the teachers felt they needed is described, as is the proactive work which teachers might undertake. 相似文献
86.
Hui C. Choo Kazunori Nosaka Jeremiah J. Peiffer Mohammed Ihsan Chow C. Yeo Chris R. Abbiss 《Journal of sports sciences》2017,35(17):1715-1723
This study examined the test-retest reliability of near-infrared spectroscopy (NIRS), laser Doppler flowmetry (LDF) and Doppler ultrasound to assess exercise-induced haemodynamics. Nine men completed two identical trials consisting of 25-min submaximal cycling at first ventilatory threshold followed by repeated 30-s bouts of high-intensity (90% of peak power) cycling in 32.8 ± 0.4°C and 32 ± 5% relative humidity (RH). NIRS (tissue oxygenation index [TOI] and total haemoglobin [tHb]) and LDF (perfusion units [PU]) signals were monitored continuously during exercise, and leg blood flow was assessed by Doppler ultrasound at baseline and after exercise. Cutaneous vascular conductance (CVC; PU/mean arterial pressure (MAP)) was expressed as the percentage change from baseline (%CVCBL). Coefficients of variation (CVs) as indicators of absolute reliability were 18.7–28.4%, 20.2–33.1%, 42.5–59.8%, 7.8–12.4% and 22.2–30.3% for PU, CVC, %CVCBL, TOI and tHb, respectively. CVs for these variables improved as exercise continued beyond 10 min. CVs for baseline and post-exercise leg blood flow were 17.8% and 10.5%, respectively. CVs for PU, tHb (r2 = 0.062) and TOI (r2 = 0.002) were not correlated (P > 0.05). Most variables demonstrated CVs lower than the expected changes (35%) induced by training or heat stress; however, minimum of 10 min exercise is recommended for more reliable measurements. 相似文献
87.
88.
Grace M. Jackson-Brown 《The Reference Librarian》2017,58(2):136-151
This study is an exploratory qualitative investigation of academic library blogs with the purpose of examining how the technology of blogging is evolving for reference and research purposes at particular academic law libraries. This study uses anthropological archive research methods to study the blogs’ posts and triangulates the study with librarian blogger interviews. It provides a look into possible future directions for blogging in academic law libraries that may serve as a model for other academic libraries. 相似文献
89.
90.
David B. Resnik Elizabeth Wager Grace E. Kissling 《Journal of the Medical Library Association》2015,103(3):136-139