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361.

University Instructors Beliefs and Practices Toward Student-Centered Learning

Lee Eunbae 한국교육학회 교육학연구 24 Pages

한국교육학회 교육학연구 2021, 59권 7호 1 1-24 (24 pages)

Lee Eunbae 저
...
- 5,300원
This study explores undergraduate course instructors’ stated beliefs and practices toward student-centered learning. In-depth interviews with four undergraduate course instructors in a variety of disciplines in the United States revealed their beliefs about the roles of instructors’ and students’ as well as student-centered learning. Also, the instructors’ teaching styles are measured and compared with their stated beliefs and practices. Through thematic analysis and deductive and inductive...
362.

The Development of a Teaching and Learning Model for Mobile-based Collaborative Learning

Chang Woo Nam, Seonyoung Jang 한국교육학회 교육학연구 24 Pages

한국교육학회 교육학연구 2016, 54권 2호 13 373-396 (24 pages)

Chang Woo Nam, Seonyoung Jang 저
...
- 5,300원
The purpose of this study is to develop a teaching and learning model for collaborative learning in mobile learning (m-learning) environments. For this purpose, this study utilized a literature review and a three-round Delphi method that employed three expert panels to develop the teaching and learning model. The teaching and learning model developed in this study includes six primary phases: (1) providing orientation of mobile-based collaborative learning, (2) guiding strategies for improving...
363.

인지구조모형에 근거한 학생의 지식상태의 진단 : 규칙장이론(Rule-space theory)의 적용

김성훈 한국교육학회 교육학연구 20 Pages

한국교육학회 교육학연구 2005, 43권 1호 4 81-107 (20 pages)

김성훈 저
...
- 4,900원
학생의 성취도 평가가 보다 더 수업과 직결될 수 있도록 할 수 있는 인지심리학적 측정의 가능성을 탐색하는 의미에서, 규칙장이론을 적용하여 학생들의 인지상태를 진단하고자 하였다. 인지상태진단은 크게 인지구조모형인 Q-matrix의 결정단계와 최종 인지상태의 추정단계로 나뉜다. Q-matrix 결정 단계는 전문적 판단과 중다회귀분석이 상호보완적으로 이용될 수 있음을 제시하였다. 인지상태 추정단계에서는 인지상태분석 결과인 학생의 인지상태 진단결과제시 방법으로서 인지요소유형과 인지요소성취확률을 제시하고 비교하였다....
364.

Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound

Soheila Gholitabar, Hasan Tahermansouri 한국탄소학회 Carbon Letters 11 Pages

한국탄소학회 Carbon Letters 2017, Vol.22 2 14-24 (11 pages)

Soheila Gholitabar, Hasan Tahermansouri 저
...
- 4,000원
(Fritz-Schlunder and Baudu) and one five-parameter equation (Fritz-Schlunder). Three error analysis methods, correlation coefficient, chi-square test and average relative errors, were applied to determine the best fit isotherm. The error analysis showed that the models with more than two parameters better described the picric acid sorption data compared to the two-parameter models. In particular, the Baudu equation provided the best model for the picric acid sorption data for both methods.
365.

Advances in liquid crystalline nano-carbon materials: preparation of nano-carbon based lyotropic liquid crystal and their fabrication of nano-carbon fibers with liquid crystalline spinning

Yong-Mun Choi, in Jung Jun Yeon, Hwang Seung Min, Kim Hyeonsu Jeong, Bon-Cheol Ku, Munju Goh 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.4 1 223-232 (10 pages)

Yong-Mun Choi, in Jung Jun Yeon, Hwang Seung Min, Kim Hyeonsu Jeong, Bon-Cheol Ku, Munju Goh 저
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- 3,000원
This review presents current progress in the preparation methods of liquid crystalline nanocarbon materials and the liquid crystalline spinning method for producing nano-carbon fibers. In particular, we focus on the fabrication of liquid crystalline carbon nanotubes by spinning from superacids, and the continuous production of macroscopic fiber from liquid crystalline graphene oxide.
366.

The effects of stacking sequence on the penetration-resistant behaviors of T800 carbon fiber composite plates under low-velocity impact loading

Furqan Ahmad, Jung-Wuk Hong, Heung Soap Choi, Soo-Jin Park, Myung Kyun Park 한국탄소학회 Carbon Letters 9 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.2 6 107-115 (9 pages)

Furqan Ahmad, Jung-Wuk Hong, Heung Soap Choi, Soo-Jin Park, Myung Kyun Park 저
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- 3,000원
Impact damages induced by a low-velocity impact load on carbon fiber reinforced polymer (CFRP) composite plates fabricated with various stacking sequences were studied experimentally. The impact responses of the CFRP composite plates were significantly affected by the laminate stacking sequences. Three types of specimens, specifically quasi-isotropic, unidirectional, and cross-ply, were tested by a constant impact carrying the same impact energy level. An impact load of 3.44 kg, corresponding to...
367.

Study on lowering the percolation threshold of carbon nanotube-filled conductive polypropylene composites

Seung Bin Park, Moo Sung Lee, Min Park 한국탄소학회 Carbon Letters 8 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.2 8 117-124 (8 pages)

Seung Bin Park, Moo Sung Lee, Min Park 저
...
- 3,000원
Conductive polymer composites (CPCs) consist of a polymeric matrix and a conductive filler, for example, carbon black, carbon fibers, graphite or carbon nanotubes (CNTs). The critical amount of the electrically conductive filler necessary to build up a continuous conductive network, and accordingly, to make the material conductive; is referred to as the percolation threshold. From technical and economical viewpoints, it is desirable to decrease the conductive- filler percolation-threshold as...
368.

Adsorption properties of activated carbon prepared from pre-carbonized petroleum coke in the removal of organic pollutants from aqueous solution

S.A.SayedAhmed, RehamM.M.AboEl-eninandTh.El-Nabarawy 한국탄소학회 Carbon Letters 11 Pages

한국탄소학회 Carbon Letters 2011, Vol.12 No.3 5 151-161 (11 pages)

S.A.SayedAhmed, RehamM.M.AboEl-eninandTh.El-Nabarawy 저
...
- 4,000원
369.

A Review on Thermal Conductivity of Polymer Composites Using Carbon-Based Fillers : Carbon Nanotubes and Carbon Fibers

Jinho Hong, Dong Wha Park , Sang Eun Shim 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2010, Vol.11 No.4 12 347-356 (10 pages)

Jinho Hong, Dong Wha Park , Sang Eun Shim 저
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- 3,000원
370.

Molecular Dynamics Simulations of Graphite-Vinylester Nanocomposites and Their Constituents

H. Alkhateb, A. Al-Ostaz, A. H.-D. Cheng 한국탄소학회 Carbon Letters 9 Pages

한국탄소학회 Carbon Letters 2010, Vol.11 No.4 7 316-324 (9 pages)

H. Alkhateb, A. Al-Ostaz, A. H.-D. Cheng 저
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- 3,000원

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