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排序方式: 共有173条查询结果,搜索用时 15 毫秒
21.
Muhammad Maqsud 《Educational research; a review for teachers and all concerned with progress in education》2013,55(2):237-243
An experiment was conducted to examine the effects of metacognitive instruction on mathematics achievement and attitude towards mathematics of low mathematics achievers at a middle school in the North‐West Province of South Africa. Forty standard (std) 7 pupils were identified whose non‐verbal general ability and previous mathematics achievements were significantly lower than those of other std 7 pupils. These subjects were randomly assigned to an experimental group and a control group. Metacognitive strategies in solving mathematical problems related to four mathematics topics were individually taught to the members of the experimental group, while the pupils in the control group were taught the four mathematics topics through the conventional method of teaching mathematics. The comparisons of pretest and posttest measures of general ability, metacognitive awareness, attitude towards mathematics, and mathematics achievement revealed that the posttest scores of all the four variables for the experimental group were significantly higher than those for the control group. 相似文献
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阿米娜·买买提 《喀什师范学院学报》2002,23(6):39-42
合成了香草醛缩色氨酸席夫碱(简写为L)及其稀土La(III)、Nd(III)、Sm(III)、Ce(III)配合物,通过元素分析、摩尔电导、差热-热重分析、红外光谱、紫外光谱等手段.确定配合物为KRe(H2O)(NO3)·2H2O(Re=La,Nd,Sm,Ce). 相似文献
24.
This paper addresses the filtering problem for the one-sided Lipschitz nonlinear systems under measurement delays and disturbances using a generalized observer. A generalized architecture for filtering of the one-sided Lipschitz nonlinear systems with output delays is explored, which exhibits diverging manifolds, namely, the conventional static-gain filter and the dynamical filter, and can be employed to render robust stability of the filtering error dynamics. A matrix inequality based framework is obtained by employing a Lyapunov?Krasovskii (LK) functional, whose derivative is exploited through Jensen's inequality, one-sided Lipschitz condition, quadratic inner-boundedness inequality and range of the measurement delay, resulting into L2 stability for the filtering error system. Generalized filter design for the Lipschitz nonlinear systems with delayed outputs and specific results for the delay-dependent and delay-rate-independent filtering schemes for the one-sided Lipschitz nonlinear systems are deduced from the proposed approach. Convex optimization techniques are employed to achieve a solution for the nonlinear constraints through linear matrix inequalities by employing cone complementary linearization approach. Illustrative numerical examples to demonstrate the effectiveness of proposed method are provided. 相似文献
25.
local government authorities (LGAs) are organised around operational structures with business processes spanning within departments and across other government organisations. In such an organisational setting, the harmonisation of Information Technology (IT) operations, integration of cross-departmental processes and the underlying Information Systems (IS) signifies a challenge in delivering integrated services. This paper attempts to explore enterprise application integration (EAI) adoption in the UK local government authorities (LGAs). Despite the hype of EAI adoption in private domain, its application in LGAs is inadequate as there is a lack of adoption models/frameworks that can be used by the public sector. The context of the study is to consider the transformation of IT infrastructure management and operations with EAI technologies. The empirical findings, generated through a detailed case analysis, manifestly exemplify that EAI predominantly acts as a ‘back-office’ technology that facilitates operations by developing a flexible and maintainable integrated IT infrastructure. Our proposed framework is believed to be imperative and unique as it provides a more systematic way to examine the adoption of integration technologies, extends the established norms for EAI adoption by utilising a prioritisation technique to classify the importance of factors. The contribution of the research extends the literature on EAI and identifies theoretical and practical opportunities that facilitate LGAs in their decision-making process to produce more robust proposals for EAI adoption. 相似文献
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Practical examinations in anatomy are usually conducted on specimens in the anatomy laboratory (referred to here as the “traditional” method). Recently, we have started to administer similar examinations online using the quiz facility in Moodle?. In this study, we compare student scores between two assessment environments viz. online and traditional environments. We hypothesized that regardless of the examination medium (traditional or online) overall student performance would not be significantly different. For the online medium, radiological images, prosected specimens, and short video clips demonstrating muscle action were first acquired from resources used for teaching during anatomy practical classes. These were optimized for online viewing and then uploaded onto Moodle learning management software. With regards to the traditional format, actual specimens were usually laid out in a circular stream. Identification tags were then attached to specific spots on the specimens and questions asked regarding those identified spots. A cohort of students taking practical examinations in six courses was studied. The courses were divided into three pairs with each pair credit‐weight matched. Each pair consisted of a course where the practical examination was conducted online and the other in the traditional format. There was no significant difference in the mean scores within each course pair. In addition, a significant positive correlation between score in traditional and online formats was found. We conclude that mean grades in anatomy practical examination conducted either online or in the traditional format were comparable. These findings should reassure teachers intending to use either format for their practical examinations. Anat Sci Educ. © 2011 American Association of Anatomists. 相似文献
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Muhammad Ramzan Muhammad Asif Munir Nadeem Siddique Muhammad Asif 《Higher Education》2012,64(1):73-84
Research is an original and systematic investigation undertaken to discover new facts and information about a phenomenon. However a variety of empirical and ethical issues are on the rise in academia, especially plagiarism is quickly becoming part of global educational and research culture. More and more students and researchers are turning to the Internet for cooked solutions and shortcuts for writing assignments, research papers and thesis. The purpose of this paper is to highlight the seriousness of plagiarism amongst graduate and post graduate students of Pakistan. It also explores the university students’ level of awareness of plagiarism. A total of 365 graduate and post graduate students of randomly selected public and private sector universities participated in this exploratory empirical study. A self-reported questionnaire survey was used for collection of primary data. Findings revealed that there was a low level of awareness about plagiarism and university plagiarism policies and processes amongst the students. Findings also revealed that many respondents did not understand what plagiarism is? A significant number of students have fairly admitted that they have intentionally plagiarized written materials. Based on the findings of the study this paper puts forward recommendations to create awareness amongst the students regarding plagiarism, plagiarism policies and provides statistical evidences for formulation of policies and guidelines to combat plagiarism in institutions of higher learning in Pakistan. Furthermore, the paper submits recommendations to minimize the plagiarism based on the authors’ experiences. 相似文献
29.
Muhammad Ali Shamim Renji Remesan Da-wei Han Naeem Ejaz Ayub Elahi 《浙江大学学报(A卷英文版)》2012,13(9):717-722
This paper presents an improved model for global sunshine duration estimation. The methodology incorporates geostationary satellite images by including snow cover information, sun and satellite angles and a trend correction factor for seasons, for the determination of cloud cover index. The effectiveness of the proposed methodology has been tested using Meteosat geostationary satellite images in the visible band with a temporal resolution of 1 h and spatial resolution of 2.5 km×2.5 km, for the Brue Catchment in the southwest of England. Validation results show a significant improvement in the estimation of global sunshine duration by the proposed method as compared to its predecessor (R 2 is improved from 0.68 to 0.83, root mean squared error (RMSE) from 2.37 h/d to 1.19 h/d and the mean biased error (MBE) from 0.21 h/d to 0.08 h/d). Further studies are needed to test this method in other parts of the world with different climate and geographical conditions. 相似文献
30.
Geoff J. Bathje Eunha Kim Ellen Rau Muhammad Adam Bassiouny Taehoon Kim 《International journal for the advancement of counseling》2014,36(4):408-422
This study examined attitudes toward face-to-face (f2f) and online counseling among 228 Korean college students. In addition, it tested a hypothesized model proposing that general propensities (i.e., self-concealment, openness to experience, and loss of face) would influence counseling-specific expectations (i.e., self-stigma and disclosure expectations), which, in turn, would predict attitudes toward f2f and online counseling. Findings mirrored the results of earlier studies revealing that self-concealment was negatively related to attitudes toward both f2f and online counseling, while openness to experience and disclosure expectations were positively related. However, whereas self-stigma was associated with negative attitudes toward f2f counseling, it was not related to attitudes toward online counseling. In addition, disclosure expectations accounted for f2f attitudes more than online attitudes. 相似文献