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1.
Arslan Okan Haser Çiğdem Van Zoest Laura R. 《Journal of Mathematics Teacher Education》2022,25(4):429-452
Journal of Mathematics Teacher Education - To better understand the critical early years of teaching and teacher identity development, this study explored the mathematics teacher identity of two... 相似文献
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AbstractThe arrangement of response options in multiple-choice (MC) items, especially the location of the most attractive distractor, is considered critical in constructing high-quality MC items. In the current study, a sample of 496 undergraduate students taking an educational assessment course was given three test forms consisting of the same items but the positions of the most attractive distractor varied across the forms. Using a multiple-indicators–multiple-causes (MIMIC) approach, the effects of the most attractive distractor's positions on item difficulty were investigated. The results indicated that the relative placement of the most attractive distractor and the distance between the most attractive distractor and the keyed option affected students’ response behaviors. Moreover, low-achieving students were more susceptible to response-position changes than high-achieving students. 相似文献
3.
In this study, an artificial neural network （ANN） model for studying the strength properties of steel fiber reinforced concrete （SFRC） containing fly ash was devised. The mixtures were prepared with 0 wt%, 15 wt%, and 30 wt% of fly ash, at 0 vol.%, 0.5 vol.%, 1.0 vol.% and 1.5 vol.% of fiber, respectively. After being cured under the standard conditions for 7, 28, 90 and 365 d, the specimens of each mixture were tested to determine the corresponding compressive and flexural strengths. The pa- rameters such as the amounts of cement, fly ash replacement, sand, gravel, steel fiber, and the age of samples were selected as input variables, while the compressive and flexural strengths of the concrete were chosen as the output variables. The back propagation learning algorithm with three different variants, namely the Levenberg-Marquardt （LM）, scaled conjugate gradient （SCG） and Fletcher-Powell conjugate gradient （CGF） algorithms were used in the network so that the best approach can be found. The results obtained from the model and the experiments were compared, and it was found that the suitable algorithm is the LM algorithm. Furthermore, the analysis of variance （ANOVA） method was used to determine how importantly the experimental parameters affect the strength of these mixtures. 相似文献
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In this paper, a different internal fault modeling and an identification algorithm are presented. There has been an increasing concern about turn-to-turn faults in transformers because of the high costs of unexpected outages. It is not always possible to analyze the transformer behavior under such faults at rated conditions, since the tests are highly destructive. To develop transformer internal fault detection technique, a transformer model to simulate internal faults is required. This paper describes a novel technique and methodology for modeling and identifying transformer internal faults by using transmission line method (TLM) and fuzzy reasoning technique based on dynamic principal component analysis (PCA), respectively. The transformer has been modeled considering non-linearities as hysteresis and saturation. Transformer internal fault currents are successfully discriminated from the rated currents. The degree and priority of transformer internal faults are obtained by the proposed method. It is suited for implementation on computers because of no computation complexity. Hence, the proposed algorithm can be used effectively in real-time fault identification problems. 相似文献
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Zühal Okan Rana Y&#x;ld&#x;r&#x;m 《International Journal of Educational Development》2004,24(6):603-616
This paper is a report of a study on early school experience as part of a Teacher Education programme in Turkey. The programme requires second-year students to act as students only, observing their mentors in classrooms rather than practising teaching so that they can gain a wider view of the teaching profession. The study analyses the experiences of these students, therefore, particularly focusing on the extent to which this scheme is conducive to making students learn from their experience. The findings from the qualitative data suggest that careful attention must be paid to major factors shaping this process, such as the school atmosphere as a whole, the nature of tasks for observation, the quality of interaction between student-mentor, and, more importantly, the opportunities for students to develop an inquiry-based approach to teaching. 相似文献
6.
Damien C. Cormier Okan Bulut Kevin S. McGrew Jessica Frison 《Psychology in the schools》2016,53(8):787-803
Writing is a complex academic task—it involves numerous mental processes. Given the necessity for developing writing skills from elementary to secondary school, this study aimed to investigate the role of broad cognitive abilities derived from the Cattell–Horn–Carroll (CHC) theory of intelligence in predicting skills associated with writing achievement. The normative sample from the fourth edition of the Woodcock–Johnson Tests of Cognitive Abilities and the Woodcock–Johnson Tests Academic Achievement were used to examine the relationships between broad CHC abilities and academic achievement in writing. The findings of this study suggest that the broad CHC abilities Comprehension‐Knowledge, Processing Speed, and Fluid Reasoning are especially important predictors of basic writing skills and written expression during the school‐age years. In general, changes in the strength of the association between cognitive abilities and academic achievement in writing are observed over time, as the cognitive demands involved in the writing increase in complexity in later grades. 相似文献
7.
Okan Bulut Ming Lei Qi Guo 《International Journal of Research & Method in Education》2018,41(2):169-183
Item positions in educational assessments are often randomized across students to prevent cheating. However, if altering item positions results in any significant impact on students’ performance, it may threaten the validity of test scores. Two widely used approaches for detecting position effects – logistic regression and hierarchical generalized linear modelling – are often inconvenient for researchers and practitioners due to some technical and practical limitations. Therefore, this study introduced a structural equation modeling (SEM) approach for examining item and testlet position effects. The SEM approach was demonstrated using data from a computer-based alternate assessment designed for students with cognitive disabilities from three grade bands (3–5, 6–8, and high school). Item and testlet position effects were investigated in the field-test (FT) items that were received by each student at different positions. Results indicated that the difficulty of some FT items in grade bands 3–5 and 6–8 differed depending on the positions of the items on the test. Also, the overall difficulty of the field-test task in grade bands 6–8 increased as students responded to the field-test task in later positions. The SEM approach provides a flexible method for examining different types of position effects. 相似文献
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Research in Science Education - The purpose of this study was to examine eighth-grade students’ science performance in terms of two test design components, item format, and cognitive domain.... 相似文献
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Zuhal Okan 《Learning Environments Research》2008,11(1):31-48
Whereas most research on computer-assisted language learning (CALL) tends to rely heavily on the assessment of academic achievement and language learning outcomes, this study involved an evaluation of the psychosocial learning environment in computing laboratories. The What Is Happening In this Class? (WIHIC) and Attitude to Computers and Computing Courses (ACCC) questionnaires were administered to 152 university students undertaking 1-year compulsory education courses in English at the Centre for Foreign Languages (YADIM) at Çukurova University in Turkey. Analysis of data illuminated students’ perceptions of the computer laboratory class as a language learning environment and paved the way for further learning environment studies involving both students and teachers. 相似文献
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Zühal Okan 《British journal of educational technology : journal of the Council for Educational Technology》2003,34(3):255-264
Since the early 1990s interest has surged in developing edutainment software, namely applications that possess the allure of electronic games while achieving educational goals. In the rush to adopt this new seemingly harmless technological fad, both educators and parents overlooked its long-term harmful effects. The aim of this article is to draw attention to these effects, particularly to the inflated expectation in the learners that the process of learning should always be colourful and fun, and that they can acquire information without work and serious study. It argues that what is essential is realizing that education is concerned with the development of cognitive structures and that educational technology is a medium, not a pedagogy that is useful in creating such learning environments. In this context, it may be time to examine critically the educational potential of edutainment software together with the advantages and disadvantages it might bring to the instructional process. The discussion begins, after a brief definition of edutainment, with an understanding of what technology and education entail. Then the discussion broadens to a critique of problems with edutainment drawing on the findings of educational psychology. 相似文献