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11.
Savas Basturk 《Educational studies》2010,36(3):283-298
The aim of this study is to investigate students’ conceptions about proof in mathematics and mathematics teaching. A five‐point Likert‐type questionnaire was administered in order to gather data. The sample of the study included 33 first‐year secondary school mathematics students (at the same time student teachers). The data collected were analysed and interpreted using the methods of qualitative and quantitative analysis. The results have revealed that the students think that mathematical proof has an important place in mathematics and mathematics education. The students’ studying methods for exams based on imitative reasoning which can be described as a type of reasoning built on copying proof, for example, by looking at a textbook or course notes proof or through remembering a proof algorithm. Moreover, they addressed to the differences between mathematics taught in high school and university as the main cause of their difficulties in proof and proving. 相似文献
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Ramazan Yirci Tuncay Yavuz Özdemir Seçil Eda Kartal İbrahim Kocabaş 《School Leadership & Management》2014,34(5):454-469
The purpose of this study was to find out teachers' perceptions about school principals' coaching skills. The study was carried out within qualitative research methods. The study group included 76 teachers in Elazig and 73 teachers in Kahramanmara? provinces of Turkey. All the data were processed using Nvivo 9 software. The results indicate that teachers' perceptions about their principals' coaching skills do not differ according to the age, marital status, sex and education status variables. The teachers think that their principals are successful at some coaching skills such as being experienced and knowledgeable, being an effective listener and setting achievable targets. Principals fail to show empathy, communicate effectively, praise, give feedback, motivate and have effective inquiry coaching skills. According to teachers' opinions, being a role model, showing empathy, praising, effectively communicating and motivating are important coaching skills that they would show if they were to sit in the principal chair. 相似文献
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In this paper, new upper bounds for the solution matrix of the continuous algebraic Riccati matrix equation (CARE) are derived by means of some matrix inequalities and linear algebraic techniques. Furthermore, for the derived each bound, iterative algorithms are developed to obtain sharper solution estimates. Comparing with some appearing results in the literature, the presented bounds are less restrictive and more efficient. Finally, numerical examples are given to illustrate the effectiveness of the proposed results. 相似文献
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Biotechnology has been identified as one of the key sectors for future economic growth in many countries, with South Africa being no exception. Consequently, the South African government introduced the National Biotechnology Strategy (NBS) in 2001 to modernise the government’s biotechnology institutions and to develop the biotechnology industry, given a changing political and technical environment. An important product of the NBS was the establishment of biotechnology regional innovation centres (BRICs) in 2002, which aimed to develop and commercialise the biotechnology industry. The BRICs, however, were effectively replaced by the creation of the Technology Innovation Agency (TIA) in 2008, which also formed part of the 10-year plan of the Department of Science and Technology (DST). The TIA’s aims are to develop South Africa’s ability to convert local research and development (R&D) into commercial products and services. This paper will explore recent changes in the role of the South African government in its attempts to support and develop the biotechnology industry. 相似文献
15.
Gaussian Chirplet Model (GCM) is commonly used for signal analysis in many fields including ultrasound, radar, sonar, seismology, and biomedicine. The symmetric envelope of GCM is often inadequate in representing real echo envelopes which are more likely to be asymmetric. In our previous work we introduced the Asymmetric Gaussian Chirplet Model (AGCM) that generalizes the GCM. In this paper, an efficient successive parameter estimation algorithm is proposed utilizing echo envelope and instantaneous phase obtained via analytical signal representation. The initial parameters obtained via successive estimation are fine-tuned with a fast Gauss–Newton algorithm developed for the AGCM to achieve Maximum Likelihood Estimation (MLE) of model parameters. The performance of parameter estimation algorithm is formally verified employing Monte-Carlo simulations and Cramer–Rao Lower Bounds. Parameter estimation is shown to be minimum variance and unbiased for SNR levels 10 dB and higher. Furthermore, AGCM has been tested on real ultrasound echoes measured from planar targets. AGCM provides better echo fits than the GCM due to its more flexible envelope. 相似文献
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Ramazan Yilmaz Fatma Gizem Karaoglan Yilmaz Ebru Kilic Cakmak 《Interactive Learning Environments》2017,25(8):949-969
The purpose of this study is to examine the impacts of transactive memory system (TMS) and interaction platforms in computer-supported collaborative learning (CSCL) on social presence perceptions and self-regulation skills of learners. Within the scope of the study, social presence perceptions and self-regulation skills of students in collaborative groups constructing knowledge in wiki, blog, podcast and Facebook platforms in CSCL processes were compared. The study is designed as a pretest and post-test control group study and was carried out with 97 university students. Social presence and self-regulation scales were administered as pretest in the study. At the end of process, social presence, self-regulation, transactive memory scales and semi-structured student opinion forms were administered as post-test. When the findings were examined, it was seen that interaction platforms and the TMS level of the group did not have a significant impact on social presence perception individually; yet common impact of these two variables was significant. When the impact of interaction platforms and the TMS on self-regulation skills was examined, it was found that whilst interaction platforms had a significant impact, the TMS alone and interaction platforms–TMS common impact were not significant. 相似文献
18.
Ramazan Kurul Muhammed Nur Ögün Ayşe Neriman Narin Şebnem Avci Beyza Yazgan 《Anatomical sciences education》2020,13(5):648-656
The aim of this study was to investigate the effect of immersive three-dimensional (3D) interactive virtual reality (VR) on anatomy training in undergraduate physical therapy students. A total of 72 students were included in the study. The students were randomized into control (n = 36) and VR (n = 36) group according to the Kolb Learning Style Inventory, sex, and Purdue Spatial Visualization Test Rotations (PSVT-R). Each student completed a pre-intervention and post-intervention test, consisting of 15 multiple-choice questions. There was no significant difference between the two groups in terms of age, sex, Kolb Learning Style Inventory distribution, and the PSVT-R (P > 0.05). The post-test scores were significantly higher compared to pre-test scores in both the VR group (P < 0.001) and the control group (P < 0.001). The difference between the pre-test and post-test results was found to be significantly higher in favor of the VR group (P < 0.001). In this study, anatomy training with a 3D immersive VR system was found to be beneficial. These results suggest that VR systems can be used as an alternative method to the conventional anatomy training approach for health students. 相似文献
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The main purpose of this research is to examine in-service teachers' instructional beliefs about student-centered education. The inventory was designed to measure teachers' student-centered educational beliefs based on four components of the educational curriculum comprising of educational objectives, content, teaching strategies and instructional assessment. Data for the study were collected from 307 in-service teachers working at K-8 schools. A quantitative research analysis showed that in-service teachers held positive beliefs about student-centered education. In addition, the characteristics of teachers such as school level, teaching experience, teaching subject and educational background had statistically significant effects on their beliefs about student-centered education. 相似文献
20.
İkbal Tuba Şahin-Sak Ramazan Sak Fatma Tezel-Şahin 《Early Years: An International Journal of Research and Development》2018,38(1):35-52
This survey-based quantitative study investigates 310 Turkish preschool teachers’ views about classroom management, using the following six models of disciplinary strategy: behavioral change theory, Dreikurs’ social discipline model, Canter’s assertive discipline model, the Glasser model of discipline, Kounin’s model, and Gordon’s teacher effectiveness training (TET) model. Data were collected through a demographic information form and the Discipline Strategies Questionnaire. The results showed that the participant teachers usually agreed with items that reflected a child-centered approach to classroom management. Also, the respondents’ views of Dreikurs’ social discipline model and Gordon’s TET model differed according to their gender. The teachers’ views related to behavioral change theory and Gordon’s TET also varied markedly, depending on the ages of the children they taught. 相似文献