Do children with reading difficulties benefit from instructional game supports? Exploring children's attention and understanding of feedback     

Asimina Vasalou  Laura Benton  Seray Ibrahim  Emma Sumner  Nelly Joye  Elisabeth Herbert 《British journal of educational technology : journal of the Council for Educational Technology》2021,52(6):2359-2373

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Detection of optimal spreading codes for DS-CDMA wireless systems with despreading sequences weighted by adjustable chip waveforms     

Ibrahim Develi 《Journal of The Franklin Institute》2005,342(1):69-84

This paper considers the problem of detecting the optimal spreading codes (OSC) in a given code set for a direct sequence-code division multiple access system that employs despreading sequences weighted by adjustable chip waveforms. Due to computational complexity required to detect the OSC in a code set, a simple and efficient strategy is introduced. Analysis and numerical results show that the proposed strategy can successfully distinguish the spreading codes being most suitable references for a given code set in which the candidate spreading codes have equal crosscorrelation properties.  相似文献   

Democracy or fellowship and participation with peers: what constitutes one’s choice to self-segregate?     

Øyvind Ibrahim Marøy Snipstad 《欧洲特需教育杂志》2019,34(3):355-368

Democracy in an inclusive discourse in education relates to all children’s rights to comment upon and influence matters concerning their interest in education. The article’s empirical data are based on a girl categorised with intellectual disability who through her surroundings is granted the right to influence her physical placement in school, which results in her often choosing to segregate herself from the fellowship with peers. This creates a dilemma for the school, which is faced with the question of overruling her decision in favour of other aspects of inclusion such as fellowship and participation or to continue supporting her decision to segregate. Based on theoretical contributions by Ian Hacking and Lev Vygotskij, this article discusses how schools and teachers approach children that are categorised as intellectually disabled and how the category influences the construction of their identity. Further, constructions of identity govern how the child views themselves and their surroundings. How they understand themselves in relation to the context and situations they are part of will ultimately affect what needs, wishes and compensation strategies the child develops. Studying the structures at play might contribute to further understanding about what causes a child to decide in a manner that conflicts with dimensions of inclusion.  相似文献   

Promoting Pre-service Elementary Students' Understanding of Chemical Equilibrium through Discussions in Small Groups     

Ibrahim Bilgin 《International Journal of Science and Mathematics Education》2006,4(3):467-484

The purpose of this study was to investigate the effectiveness of small group discussion on students' conceptual understanding of chemical equilibrium. Students' understanding of chemical equilibrium concepts was measured using the Misconception Identification Test. The test consisted of 30 items and administered as pre-posttests to a total of 81 pre-service elementary students in two intact classes of the same university. One of the classes was randomly assigned as experimental group (n = 40) which was instructed with discussion propositions related to chemical equilibrium concepts in small group and the other class was assigned as control group (n = 41) which was instructed through traditionally designed chemistry instruction. Analysis of covariate (ANCOVA) was used to determine treatment effects on students' conceptual understanding of chemical equilibrium when pre-test result was used a covariate. The analysis of results showed a statistically significant difference between the experimental and control groups' posttest mean scores in favor of the experimental group after treatment (F(1,78) = 47,77; P < 0.05). The results indicated that while the average percentage of students in the experimental group holding a scientifically correct concept had risen from 35.0% to 59.1%, a gain of 24.1%, the percentage of correct responses of the students in the control group had increased from 32.5% to 43.82%, a gain of 11.32% after treatment. In addition, the percentages of students' correct responses and keyed misconceptions on posttest results were discussed for six areas related to: (1) the mass vs. concentration, (2) rate vs. extent, (3) constancy of the equilibrium constant, (4) misuse of Le Chatelier's principle, (5) constant concentration, and (6) competing equilibria related to chemical equilibrium concepts in experimental and control groups.  相似文献   

Modeling switched circuits based on wavelet decomposition and neural networks     

Davut Hanbay  Ibrahim Turkoglu 《Journal of The Franklin Institute》2010,347(3):607-617

In this paper, switched circuits are modeled based on wavelet decomposition and neural network. Also describes the usage of wavelet decomposition and neural network for modeling and simulation of nonlinear systems. The switched circuits are piecewise-linear circuits. At each position of switch the circuit is linear but when considered all switching positions of the circuit it becomes nonlinear. An important problem which arises in modeling switched circuit is high structural complexity. In this study, wavelet decomposition is used for feature extracting from input signals and neural network is used as an intelligent modeling tool. Two performance measures root-mean-square (RMS) and the coefficient of multiple determinations (R²) are given to compare the predicted and computed values for model validation. The evaluated R² value is 0.9985 and RMS value is 0.0099. All simulations showed that the proposed method is more effective and can be used for analyzing and modeling switched circuits. When we consider obtained performance, we can easily say that the proposed method can be used efficiently for modeling any other nonlinear dynamical systems.  相似文献   

The Student Actions Coding Sheet (SACS): An instrument for illuminating the shifts toward student‐centered science classrooms     

Ibrahim Erdogan  Nor Hashidah Abd‐Hamid 《International Journal of Science Education》2013,35(10):1313-1336

This study describes the development of an instrument to investigate the extent to which student‐centered actions are occurring in science classrooms. The instrument was developed through the following five stages: (1) student action identification, (2) use of both national and international content experts to establish content validity, (3) refinement of the item pool based on reviewer comments, (4) pilot testing of the instrument, and (5) statistical reliability and item analysis leading to additional refinement and finalization of the instrument. In the field test, the instrument consisted of 26 items separated into four categories originally derived from student‐centered instruction literature and used by the authors to sort student actions in previous research. The SACS was administered across 22 Grade 6–8 classrooms by 22 groups of observers, with a total of 67 SACS ratings completed. The finalized instrument was found to be internally consistent, with acceptable estimates from inter‐rater intraclass correlation reliability coefficients at the p < 0.01 level. After the final stage of development, the SACS instrument consisted of 24 items separated into three categories, which aligned with the factor analysis clustering of the items. Additionally, concurrent validity of the SACS was established with the Reformed Teaching Observation Protocol. Based on the analyses completed, the SACS appears to be a useful instrument for inclusion in comprehensive assessment packages for illuminating the extent to which student‐centered actions are occurring in science classrooms.  相似文献   

基于Hough直线检测的深度图像配准方法   总被引：1，自引：0，他引：1  

阿布来提·依布拉音  王治强  刘薇  高慧婷 《中国科学院研究生院学报》2013,30(1):112-116

针对传统的图像配准方法中寻找图像之间点对应关系这一难点问题,提出一种基于Hough直线检测的深度图像配准方法.利用Hough变换检测深度图像上的直线,确定不同视点图像上直线之间的对应关系.根据对应直线三维空间上的方向向量确定两幅图像之间的刚体变换参数.最后用模拟深度图像验证方法的有效性并给出三维重建结果.  相似文献   

The University of Mauritius: Context and evolution     

Ibrahim Alladin 《Prospects》1987,17(2):288-296

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On the Transient Solution of Non-Deterministic Systems     

Joseph Padovan  Ibrahim Zeid 《Journal of The Franklin Institute》1979,308(5):497-511

Through the use of formal expansions, a non-deterministic solution approach is developed for systems modeled by first order matrix differential equations with random coefficients and input conditions. The generality of the solution procedure is such that various statistical moments can be generated. In particular, this includes such moments as the mean and standard deviation vectors, the variance-covariance matrix etc. To ascertain the overall properties of such moments, various recursive generators as well as convergence and truncation criteria are developed. Due to the formal structure of the overall solution, the inherent algorithmic apparatus is concise and easily programmed. Because of this, the procedure can be applied equally well to both large and small systems of non-deterministic modeling equations. A further feature of the given procedure lies in the fact that it can be used to generate the statistical solution for a given element of the dependent variable vector without necessitating the development of the entire solution. To demonstrate the scope of the approach, several numerical experiments are included in the paper.  相似文献   

m-Learning: An experiment in using SMS to support learning new English language words     

Nadire Cavus  Dogan Ibrahim 《British journal of educational technology : journal of the Council for Educational Technology》2009,40(1):78-91

There is an increase use of wireless technologies in education all over the world. In fact, wireless technologies such as laptop computers, palmtop computers and mobile phones are revolutionising education and transforming the traditional classroom-based learning and teaching into anytime and anywhere education. This paper investigates the use of wireless technologies in education with particular reference to the potential of learning new technical English language words using Short Message Service (SMS) text messaging. The system, developed by the authors, called mobile learning tool (MOLT), has been tested with 45 1st-year undergraduate students. The knowledge of students before and after the experiment has been measured. Our results show that students enjoyed and learned new words with the help of their mobile phones. We believe that using the MOLT system as an educational tool will contribute to the success of students.  相似文献