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11.
Yasemin Sağlam Şenol Dost 《International Journal of Science and Mathematics Education》2016,14(5):979-996
Examples which are used in exploring a procedure or comprehending/concretizing a mathematical concept are powerful teaching tools. Generating examples other than conventional ones is both a means for research and a pedagogical method. The aim of this study is to determine the transition process between example generation strategies, and the factors affecting success of the students in generating examples in a Real Analysis course. The participants of the study consisted of 27 undergraduate mathematics students. At the end of the study, it was observed that some of the participants used especially the trial and error strategy as an effective step in the transition to the transformation strategy. Definitions were used by participants as a trigger for example generation and to reflect on concepts during this process in order to reduce cognitive demand. 相似文献
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Muhammed M. Atakan Yasemin Güzel Süleyman Bulut ükran N. Koar Glenn K. McConell Hüseyin H. Turnagl 《运动与健康科学(英文)》2021,10(4):478
BackgroundHigh-intensity interval training (HIIT) induces similar or even superior adaptations compared to continuous endurance training. Indeed, just 6 HIIT sessions over 2 weeks significantly improves maximal oxygen uptake (VO2max), submaximal exercise fat oxidation, and endurance performance. Whether even faster adaptations can be achieved with HIIT is not known. Thus, we aimed to determine whether 2 sessions of HIIT per day, separated by 3 h, every other day for 5 days (double HIIT (HIIT-D), n = 15) could increase VO2max, submaximal exercise fat oxidation, and endurance capacity as effectively as 6 sessions of HIIT over 2 weeks (single HIIT (HIIT-S), n = 13).MethodsEach training session consisted of 10 × 60 s of cycling at 100% of VO2max interspersed with 75 s of low-intensity cycling at 60 watt (W). Pre- and post-training assessments included VO2max, time to exhaustion at ∼80% of VO2max, and 60-min cycling trials at ∼67% of VO2max.ResultsSimilar increases (p < 0.05) in VO2max (HIIT-D: 7.7% vs. HIIT-S: 6.0%, p > 0.05) and endurance capacity (HIIT-D: 80.1% vs. HIIT-S: 79.2%, p > 0.05) were observed. Submaximal exercise carbohydrate oxidation was reduced in the 2 groups after exercise training (HIIT-D: 9.2%, p = 0.014 vs. HIIT-S: 18.8%, p = 0.012) while submaximal exercise fat oxidation was significantly increased in HIIT-D (15.5%, p = 0.048) but not in HIIT-S (9.3%, p = 0.290).ConclusionSix HIIT sessions over 5 days was as effective in increasing VO2max and endurance capacity and was more effective in improving submaximal exercise fat oxidation than 6 HIIT sessions over 2 weeks. 相似文献
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Serkan Arikan Fons J. R. van de Vijver Kutlay Yagmur 《Educational Assessment, Evaluation and Accountability》2017,29(3):229-246
Lower reading and mathematics performance of Turkish immigrant students as compared to mainstream European students could reflect differential learning outcomes, differential socioeconomic backgrounds of the groups, differential mainstream language proficiency, and/or test bias. Using PISA reading and mathematics scores of these groups, we examined the role of bias and various measures related to immigrant integration policies of the host societies. Results of a multilevel analysis of reading and mathematics tests demonstrated that at individual level, students with higher scores on an index of economic, social, and cultural status obtained higher achievement scores. At country level, MIPEX scores of education and the human development index of participating countries could predict differences in reading results but not in mathematics. After correction for background characteristics, effect sizes showed a difference of .65 SD (down from a value of .96 before correction) for reading and .58 SD (down from .78) for mathematics. However, a similar correction for background variables increased the score differences between Turkish immigrants and mainstreamers. 相似文献
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ABSTRACTThis study aimed to investigate the relationships among the middle school students’ perceptions of science teacher support, students’ motivation and students’ engagement in learning science. Student motivation was addressed with task value and academic self-concept while student engagement included aspects of agentic, behavioural, emotional and cognitive engagement. In the study, survey method was used and the data were collected though previously validated self-report questionnaires. Valid data were obtained from 1006 middle school students enrolled in one of the nine public schools in Turkey. The path analysis revealed that perceived science teacher’s support positively predicted students’ task value and academic self-concept in science. Furthermore, students who reported high levels of task value and academic self-concept showed higher levels of engagement in science. Accordingly, it seems important for science teachers to listen to the students, behave fairly and help them to solve their problems in order to motivate them for learning science and increase their engagement in science class. 相似文献
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Serkan Arikan 《美中教育评论》2014,(10):716-727
There are many studies that focus on factors affecting achievement. However, there is limited research that used student characteristics indices reported by the Programme for International Student Assessment （PISA）. Therefore, this study investigated the predictive effects of student characteristics on mathematics performance of Turkish students. In PISA studies, sampling design, sampling weights, and plausible values have to be taken into consideration in order not to have biased multiple regression results. In order to conduct multiple regression analyses in PISA, software called the International Association for the Evaluation of Educational Achievement （lEA） International Database （IDB） Analyzer is required to be used because the dependent variable consists of several plausible values. This study aims to identify student characteristics that are significant in predicting mathematics performance in Turkey. Results showed that being successful in mathematics is a combination of several factors in which students＇ beliefs, motivation, and other factors must be organized to achieve mathematics. Among these beliefs and motivation, strong self-efficacy, positive self-concept, and minimum level of anxiety seem to be the key for success. 相似文献
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The authors conducted a correlational study to investigate the relations among seventh-grade Turkish students’ cheating behavior, academic self-efficacy beliefs, usage of self-handicapping strategies, personal goal orientations, and classroom goal structures specific to the science domain. The Patterns of Adaptive Learning Scales was administered to 1,950 seventh-grade students enrolled in 12 public schools. The authors conducted hierarchical linear modeling analyses to measure to what extent personal and contextual factors can be used to predict students’ cheating behavior. Analyses revealed that although students’ cheating behavior was positively predicted by performance-approach goals, it was negatively predicted by mastery goals. Students who used more self-handicapping strategies and who were less self-efficacious were also more likely to demonstrate cheating behavior. The authors found that the mastery goal–structured science-learning environment, in which understanding the material and self-improvement was emphasized, discouraged cheating. 相似文献
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Yasemin U Budak Ka?an Huysal Hakan Demirci 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2015,25(1):97-102
Background
In heart failure patients, mean platelet volume (MPV) may reflect increased platelet activation or increased numbers of large, hyper-aggregable platelets. B-type natriuretic peptide (BNP) concentration in blood is a sensitive and specific marker of heart failure, correlating with the severity and prognosis of illness, in patients presenting with acute dyspnea to the emergency department. This study evaluated the correlation between BNP concentration and MPV.Material and methods
Data were collected from 319 patients admitted to the emergency department of a cardiology hospital from January–July 2014. EDTA blood samples drawn at admission were analyzed using automated hematology system, and BNP concentration was measured using a fluorescence immunoassay.Results
The study included 190 patients with and 129 without acute heart failure (AHF). These groups had BNP concentration of 200-5000 ng/L and 5-98 ng/L, respectively. MPV levels were significantly higher in the AHF group (P < 0.001). BNP concentrations were positively correlated with MPV (r = 0.41, P < 0.001) and neutrophil / lymphocyte ratio (r = 0.38, P < 0.001).Conclusion
Increased MPV values correlate with BNP concentration, an indicator of HF severity and clinical status, in patients with AHF admitted to the emergency department.Key words: natriuretic peptide, brain; heart failure; platelet; mean platelet volume 相似文献19.
This study presents the outcome of the implementation of a process-oriented model of an intercultural competence (IC) and English as a lingua franca (ELF)-awareness development syllabus to prepare government-sponsored Turkish international sojourners for global communication in English L1 countries. Based on social constructivist research methodology, both, qualitative and quantitative data were used in the study that came from three major sources. The qualitative data included field notes obtained from a class of 10 study-abroad English preparatory students and interviews conducted with the preparatory school administrators, and the quantitative data came from pre-tests and post-tests which demonstrated a considerable shift in the attitudes of the participants of the experimental group with a boost in their ELF awareness and intercultural sensitivity compared to their control group counterparts. The outcome of the study underlines the significance of IC and ELF awareness development during language preparatory programmes prior to sojourn. 相似文献
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ABSTRACTWhere and how does arts activity drive neighbourhood revitalization? We explore the impact of arts establishments on income in US zip codes, nationally and across quantiles (from four to seven subgroups) of zip codes stratified by disadvantage (based on income and ethnicity/race). We focus on what is new here: how neighbourhood scenes or the mixes of amenities mediate relationships between the arts and income. One dramatic finding is that more bohemian/hip neighbourhoods tend to have less income, contradicting the accounts from Jane Jacobs, Richard Florida and others. Arts and bohemia generate opposing effects, which emerge if we study not a few cases like Greenwich Village, but use more careful measures and larger number of cases. Some arts factors that distinctly influence neighbourhood income include the number of arts establishments; type and range of arts establishments; levels of disadvantage in a neighbourhood; and specific pre and coexisting neighbourhood amenities. Rock, gospel and house music appeal to distinct audiences. Our discussion connects this vitalizing role for arts activity to broader community development dynamics. These overall results challenge the view that the arts simply follow, not drive, wealth, and suggest that arts-led strategies can foster neighbourhood revitalization across a variety of income, ethnic, and other contexts. 相似文献