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1.
Hasan Kahveci Cuneyt Tayman Fuat Laoğlu Hüseyin Tugrul Celik Nazan Kavas Ömer Kılıç Salih Aydemir 《Indian journal of clinical biochemistry : IJCB》2016,31(1):38-42
Infants with respiratory distress syndrome (RDS) may suffer from severe hypoxia, asphyxia. In this study, we aimed to evaluate serum ischemia-modified albumin (IMA) level as a diagnostic marker for hypoxia in preterm infants with RDS. Thirty-seven premature newborns with RDS were allocated as the study group and 42 healthy preterm neonates were selected as the control group. IMA was measured as absorbance unit (ABSU) in human serum with colorimetric assay method which is based on reduction in albumin cobalt binding. IMA levels were significantly higher in neonates with RDS as compared to the control group (P < 0.001). Cut-off value of IMA (ABSU) was 0.72, the sensitivity level was 91.9 %, the specificity was 78.6 %, positive predictive value was 79.1 % and negative predictive value was 91.7 % at RDS. Area under curve values was 0.93 (P < 0.001; 95 % CI, 0.88–0.98) in the receiver operating characteristic curve. We concluded that elevated blood IMA levels might be accepted as a useful marker for hypoxia in newborn with RDS. 相似文献
2.
Suat Khoh Lim-Teo Kwee Gek Chua Wai Kwong Cheang Joseph K. Yeo 《International Journal of Science and Mathematics Education》2007,5(2):237-261
Mathematics pedagogical content knowledge (MPCK) of teachers cannot be easily defined but is a complex concept integrating
generic pedagogical knowledge, mathematics teaching methodology as well as knowledge of the discipline of mathematics. It
is the objective of mathematics methodology courses in teacher preparation programmes to begin the development of MPCK in
their pre-service teachers. As part of a research study on the development of MPCK in primary school beginning teachers, a
16-item instrument was developed to measure some aspects of the MPCK for teaching mathematics at primary level. The instrument
was administered to the 2003 Intake of the Diploma in Education student teachers at the National Institute of Education, Singapore
just at the beginning of their programme. As they completed their methodology course in February 2005, the instrument was
administered again. This paper will discuss the findings concerning their performance in these two tests, with reference to
the overall performance as well as topic-specific and MPCK construct-specific performance. The findings indicate that student
teachers at the beginning of their programmes are generally quite weak in their mathematics pedagogical content knowledge,
as might be expected. There was significant improvement in some aspects of their MPCK on completion of their mathematics pedagogy
course. 相似文献
3.
Muammer ?al&#;k Alipa&#;a Ayas Richard K. Coll Suat ünal Bayram Co&#;tu 《Journal of Science Education and Technology》2007,16(3):257-270
The research presented in this paper consisted of an investigation of the effectiveness of a four-step constructivist-based
teaching activity on student understanding of how pressure and temperature influence the dissolution of a gas in a liquid.
Some 44 Grade 9 students (18 boys and 26 girls) selected purposively from two school classes in the city of Trabzon, Turkey
participated in the study. Students’ understanding were evaluated from examination of two items from a purpose-designed solution
concept test, face-to-face semi-structured interviews and examination of students’ self-assessment exercises. Statistical
analysis using two-way ANOVA of student test scores point to statistically-significant differences in test and total scores
(p < 0.05) suggesting that the teaching activities employed help students achieve better conceptual understanding. Further,
no statistically significant differences were seen between post-test and delayed test scores, suggesting that teaching the
activities enable students to retain their new conceptions in their long-term memory. However, in a few instances the activities
resulted in the development of new alternative conceptions, suggesting teachers need to be conscious of the positive and negative
effects of any teaching intervention. 相似文献
4.
Bayram Co&#;tu Alipa&#;a Ayas Mansoor Niaz Suat ünal Muammer ?alik 《Journal of Science Education and Technology》2007,16(6):524-536
The objective of this study was to construct a teaching strategy for facilitating students’ conceptual understanding of the
boiling concept. The study is based on 52 freshman students in the primary science education department. Students’ ideas were
elicited by a test consisting of nine questions. Conceptual change strategy was designed based on students’ alternative conceptions.
Conceptual change in students’ understanding of boiling was evaluated by administering a pre-, post- and delayed post-test.
The test scores were analysed both by qualitative and quantitative methods. Statistical analysis using one-way ANOVA of student
test scores pointed to statistically significant differences in the tests and total scores (p < 0.05). Quantitative analysis of students’ responses on each test revealed different schema about changing their knowledge
system. Both qualitative and quantitative analyses suggest that the teaching activities facilitated students’ conceptual understanding.
No statistically significant differences were found between post-test and delayed post-test scores, suggesting that the teaching
strategy enabled students to retain their new conceptions in the long-term memory. 相似文献
5.
Canan A. Agirtan Taner Akar Seher Akbas Recep Akdur Cahide Aydin Gulsen Aytar Suat Ayyıldız Sevgi Baskan Tugba Belgemen Ozdecan Bezirci Ufuk Beyazova Fatma Yucel Beyaztas Bora Buken Erhan Buken Aysu D. Camurdan Demet Can Sevgi Canbaz Gurol Cantürk Meltem Ceyhan Abdulhakim Coskun Kadriye Yurdakok 《Child abuse & neglect》2009,33(4):247-255
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7.
Ee Ling Low Suat Khoh Lim Alan Ch'ng Kim Chuan Goh 《Asia Pacific Journal of Education》2011,31(2):195-210
As the national teacher education institute in Singapore, the National Institute of Education (NIE) prepares all teachers seeking to be employed within the education service in Singapore. In the last decade, NIE's enrolment for initial teacher preparation programmes has grown significantly, with peaks in numbers during the recession years. There is also some evidence of attrition when beginning teachers complete their 3-year bond with the Ministry of Education, which sponsors their teacher education programme. It is thus important to determine empirically the reasons why pre-service teachers join the teaching profession, to see whether this can inform us about measures that can be taken to ensure they stay on in the profession. As part of a longitudinal study on beginning teachers' attitudes towards teaching and professional development, a research survey, the first of three data collections, was administered to whole cohorts of pre-service teachers entering NIE's three main teacher preparation programmes in July 2004. This paper presents the survey findings on pre-service teachers' reasons for choosing teaching as a career and discusses the differences between cohorts of different programmes. The implications of the study are discussed in terms of informing future policy and practice in the areas of teacher recruitment, retention and professional development. 相似文献
8.
Socially similar social media users can be defined as users whose frequently visited locations in their social media histories are similar. Discovering socially similar social media users is important for several applications, such as, community detection, friendship analysis, location recommendation, urban planning, and anomaly user and behavior detection. Discovering socially similar users is challenging due to dataset size and dimensions, spam behaviors of social media users, spatial and temporal aspects of social media datasets, and location sparseness in social media datasets. In the literature, several studies are conducted to discover similar social media users out of social media datasets using spatial and temporal information. However, most of these studies rely on trajectory pattern mining methods or take into account semantic information of social media datasets. Limited number of studies focus on discovering similar users based on their social media location histories. In this study, to discover socially similar users, frequently visited or socially important locations of social media users are taken into account instead of all locations that users visited. A new interest measure, which is based on Levenshtein distance, was proposed to quantify user similarity based on their socially important locations and two algorithms were developed using the proposed method and interest measure. The algorithms were experimentally evaluated on a real-life Twitter dataset. The results show that the proposed algorithms could successfully discover similar social media users based on their socially important locations. 相似文献
9.
The aim of this study is to assess prospective teachers’ views of some aspects of the nature of science (NOS) and the effects of a “Science, Technology and Society” (STS) course embedded with scientific investigation (SI) on these views. A questionnaire consisting of 13 items was given to 212 prospective teachers enrolled in a STS course before and after teaching. During the semester, participants were engaged in a specially designed pilot SI combined with explicit NOS instruction. Majority of the participants held traditional views of the target NOS aspects at beginning of the study. After the course there were significant changes in the conceptions of prospective teachers in majority target aspects of NOS as the results of a Sign test indicate. We suggest that the more suitable SI, performed in an active learning environment, related to target aspects of NOS must be selected to develop the more constructivist views about the NOS. 相似文献
10.
We obtain extremal binary self-dual codes of parameters [64,32,12] as binary images of self-dual codes over R1, R2 and R3 by employing different methods. We then apply the extension theorem to these codes to obtain a number of extremal binary self-dual codes of length 66 with trivial automorphism groups. Fifteen of the codes we obtain have new β values in W66,3, of which only three were known to exist before. We also find nine codes with new β values in W66,1, thus updating the list of such known codes. 相似文献