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411.

Exploring the Stability of the Immediate Achievement-Level Results on the National Assessment of Educational Achievement

Lee Sora, Park Chanho, Seo Minhee 한국교육학회 교육학연구 21 Pages

한국교육학회 교육학연구 2022, 60권 3호 4 71-91 (21 pages)

Lee Sora, Park Chanho, Seo Minhee 저
...
- 5,000원
Previously, the evaluation results (four levels of academic achievement) for the paper-based National Assessment of Educational Achievement (NAEA) were available only two months after the assessment was conducted. At that time, the usefulness of the evaluation results was very low because the students interest and memory of the evaluation had already decreased. While surveying school sites for their input on the introduction of computer-based tests for the NAEA in 2022, the demand for immediate...
412.

A Comparison of Three Bayesian Point Estimates for Cross-Classified Multiple Membership Growth Curve Modeling

Chung Hyewon, Jeon Hyeonjeong, Park Soyoung 한국교육학회 교육학연구 26 Pages

한국교육학회 교육학연구 2021, 59권 7호 7 167-192 (26 pages)

Chung Hyewon, Jeon Hyeonjeong, Park Soyoung 저
...
- 5,500원
This simulation study evaluated parameter recovery in cross-classified multiple membership growth curve modeling under a variety of manipulated conditions, including prior distributions (inverse Wishart and uniform distributions), number of measurement occasions (3, 5), number of groups (30, 50, 100), average group size (20, 40), and non-pure hierarchical data rates (20%, 40%). Three Bayesian point estimates were compared: the posterior mean, the posterior median, and the posterior mode. With...
413.

Correction Effects of Response Bias of Different Types of Score Adjustment in the Anchoring Vignette Method

Cho Sijung, Baek Sun-Geun 한국교육학회 교육학연구 29 Pages

한국교육학회 교육학연구 2021, 59권 7호 2 25-53 (29 pages)

Cho Sijung, Baek Sun-Geun 저
...
- 5,800원
It is a technique of correcting an individual s response to a measurement item by using the responses to vignette items on the same variable. However, out of ways one can adjust respondents’ scores using anchoring vignettes, comparisons across different methods of score adjustment have been insufficiently discussed. Hence, this study analyzed and compared the correction effects of response bias of different methods of score adjustment using anchoring vignettes in the measurement of achievement...
414.

The Influence of Principals’ Safety Leadership on Teachers’ Safety Behavior in Korea

Kim Ee-gyeong, Ahn Ji-yoon, Min Soo-bin 한국교육학회 교육학연구 23 Pages

한국교육학회 교육학연구 2021, 59권 3호 1 1-23 (23 pages)

Kim Ee-gyeong, Ahn Ji-yoon, Min Soo-bin 저
...
- 5,200원
Safety leadership has been reported to affect the safety behavior of employees in industrial organizations. However, little is known about the correlation between principals’ safety leadership and the teachers’ safety behavior within a school organization. The purpose of this study is to analyze whether principals’ safety leadership affects teachers’ safety behavior in elementary and secondary schools in Korea. Based on the data obtained from an online survey with responses from 910 teachers...
415.

Synthesize multi-walled carbon nanotubes via catalytic chemical vapour deposition method on Fe-Ni bimetallic catalyst supported on kaolin

Aliyu A, Abdulkareem AS, Kovo AS, Abubakre OK, Tijani JO, Kariim I 한국탄소학회 Carbon Letters 18 Pages

한국탄소학회 Carbon Letters 2017, Vol.21 5 33-50 (18 pages)

Aliyu A, Abdulkareem AS, Kovo AS, Abubakre OK, Tijani JO, Kariim I 저
...
- 4,700원
In this study, Fe-Ni bimetallic catalyst supported on kaolin is prepared by a wet impregnation method. The effects of mass of kaolin support, pre-calcination time, pre-calcination temperature and stirring speed on catalyst yields are examined. Then, the optimal supported Fe-Ni catalyst is utilised to produce multi-walled carbon nanotubes (MWCNTs) using catalytic chemical vapour deposition (CCVD) method. The catalysts and MWCNTs prepared using the optimal conditions are characterized using high...
416.

Thermoelectric properties of carbonaceous solids

Francesco Miccio 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2016, Vol.19 14 107-111 (5 pages)

Francesco Miccio 저
...
- 1,500원
417.

The effect of the spinning conditions on the structure of mesophase pitch-based carbon fibers by Taguchi method

Zhao Jiang, Ting Ouyang, Xiangdong Yao, Youqing Fei 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2016, Vol.19 11 89-98 (10 pages)

Zhao Jiang, Ting Ouyang, Xiangdong Yao, Youqing Fei 저
...
- 3,000원
Taguchi’s experimental design was employed in the melt spinning of molten mesophase pitch to produce carbon fibers. The textures of the obtained carbon fibers were radial with varied crack angles, as observed by scanning electron microscopy and polarized optical imaging. The diameter, crack angle, preferred orientation, and tensile modulus of the produced samples were examined to investigate the influence of four spinning variables. The relative importance of the variables has been emphasized...
418.

Phenylethynyl-terminated polyimide, exfoliated graphite nanoplatelets, and the composites: an overview

Donghwan Cho, Lawrence T. Drzal 한국탄소학회 Carbon Letters 11 Pages

한국탄소학회 Carbon Letters 2016, Vol.19 1 1-11 (11 pages)

Donghwan Cho, Lawrence T. Drzal 저
...
- 4,000원
In efforts to characterize and understand the properties and processing of phenylethynyl-terminated imide (LaRC PETI-5, simply referred to as PETI-5) oligomers and polymers as a high-temperature sizing material for carbon fiber-reinforced polymer matrix composites, PETI-5 imidization and thermal curing behaviors have been extensively investigated based on the phenylethynyl end-group reaction. These studies are reviewed here. In addition, the use of PETI-5 to enhance interfacial adhesion between...
419.

Mechanical interfacial adhesion of carbon fibers-reinforced polarized-polypropylene matrix composites: effects of silane coupling agents

Woong-Ki Choi, Hyun-Il Kim, Shin-Jae Kang, Young Sil Lee, Jong Hun Han, Byung-Joo Kim 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2016, Vol.17 No.1 12 79-84 (6 pages)

Woong-Ki Choi, Hyun-Il Kim, Shin-Jae Kang, Young Sil Lee, Jong Hun Han, Byung-Joo Kim 저
...
- 3,000원
420.

Rate-capability response of graphite anode materials in advanced energy storage systems: a structural comparison

Umer Farooq, Chil-Hoon Doh, Syed Atif Pervez, Doo-Hun Kim, Sang-Hoon Lee, Mohsin Saleem, Seong-Ju Sim, Jeong-Hee Choi 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2016, Vol.17 No.1 6 39-44 (6 pages)

Umer Farooq, Chil-Hoon Doh, Syed Atif Pervez, Doo-Hun Kim, Sang-Hoon Lee, Mohsin Saleem, Seong-Ju Sim, Jeong-Hee Choi 저
...
- 3,000원
was carried out for these graphite samples via X-ray diffraction and scanning electron microscopy. Later, the electrochemical performance was analyzed using galvanostatic charge/discharge testing and the galvanostatic intermittent titration technique for these graphite samples as negative electrode materials in battery operation. The results demonstrated that a material having a higher crystalline order exhibits enhanced electrochemical properties when evaluated in terms of rate-capability...

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