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441.

Stimulus-Discrimination Program을 통해 본 연령에 따른 인공와우 착용 아동의 운율과 내용에 대한 중앙통합능력

박귀남, 김화수, 배숙자, 서영란 한국청각언어재활학회 Audiology and Speech Research 11 Pages

한국청각언어재활학회 Audiology and Speech Research 2016, 제 12권 제 1호 6 45-55 (11 pages)

박귀남, 김화수, 배숙자, 서영란 저
...
- 4,000원
442.

변조이음향방사를 중심으로 본 결합된 항산화제(4-OHPBN plus NAC)의 급성음향외상 치료효과

최철희 한국청각언어재활학회 Audiology and Speech Research 9 Pages

한국청각언어재활학회 Audiology and Speech Research 2011, 제 7권 제 1호 6 51-59 (9 pages)

최철희 저
...
- 3,000원
443.

Multilevel Multiple-Group Latent Profile Analysis of Instructional Practices in Science: Cross-national Comparison between Korea and Japan

Son Yoonhee, Hong Yujung, Park Hyun-Jeong, Kim Junok 한국교육학회 교육학연구 30 Pages

한국교육학회 교육학연구 2021, 59권 7호 3 55-84 (30 pages)

Son Yoonhee, Hong Yujung, Park Hyun-Jeong, Kim Junok 저
...
- 5,900원
This study aims to extend the multi-group latent profile approach proposed by Morin et al. (2016) to a multilevel context and to provide an illustration with real-world data. Specifically, multilevel multiple-group latent profile analysis (MMLPA) models were fitted following seven steps to classify students according to their perception of instructional practices in science classrooms and to compare the latent profiles of two countries using Korean and Japanese data from the Programme for...
444.

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...
445.

Psychometric Properties of Context-Specific Measures of Students’ Interest and Value in Learning Science : A Multinational Examination

Ham EunHye, Jang Hyesuk, Shin TaeSeob 한국교육학회 교육학연구 22 Pages

한국교육학회 교육학연구 2015, 53권 4호 12 305-326 (22 pages)

Ham EunHye, Jang Hyesuk, Shin TaeSeob 저
...
- 5,100원
This study aims to examine how context-specific measures of students' interest and value differ from their context-general measures in psychometric properties across countries. Using PISA2006 Science data, differential effects of item context on assessing interest and value were illustrated in both the individual and country levels. The main findings are as follows: First, correlation between context-specific and context-general measures tended to be slightly higher in value than in interest....
446.

Graphitization of PAN-based carbon fibers by CO₂ laser irradiation

Liangbo Yao, Weimin Yang, Sanyang Li, Yang Sha, Jing Tan, Ying An, Haoyi Li 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2017, Vol.24 13 97-102 (6 pages)

Liangbo Yao, Weimin Yang, Sanyang Li, Yang Sha, Jing Tan, Ying An, Haoyi Li 저
...
- 3,000원
Graphite fibers are materials with a high specific modulus that have attracted much interest in the aerospace industry, but their high manufacturing cost and low yield are still problems that prevent their wide applications in practice. This paper presents a laser-based process for graphitization of carbon fiber (CF) and explores the effect of laser radiation on the microstructure of CF. The obtained Raman spectra indicate that the outer surface of CF evolves from turbostratic structures into a...
447.

Preparation of photoresist-derived carbon micropatterns by proton ion beam lithography and pyrolysis

Hui-Gyun Nam, Jin-Mook Jung, In-Tae Hwang, Junhwa Shin, Chang-Hee Jung, Jae-Hak Choi 한국탄소학회 Carbon Letters 7 Pages

한국탄소학회 Carbon Letters 2017, Vol.24 8 55-61 (7 pages)

Hui-Gyun Nam, Jin-Mook Jung, In-Tae Hwang, Junhwa Shin, Chang-Hee Jung, Jae-Hak Choi 저
...
- 3,000원
Carbon micropatterns (CMs) were fabricated from a negative-type SU-8 photoresist by proton ion beam lithography and pyrolysis. Well-defined negative-type SU-8 micropatterns were formed by proton ion beam lithography at the optimized fluence of 1×1015 ions cm?2 and then pyrolyzed to form CMs. The crosslinked network structures formed by proton irradiation were converted to pseudo-graphitic structures by pyrolysis. The fabricated CMs showed a good electrical conductivity of 1.58×102 S cm?1 and a...
448.

Study on properties of eco-friendly reduction agents for the reduced graphene oxide method

Young-il Na, Young Il Song, Sun Woo Kim, Su-Jeong Suh 한국탄소학회 Carbon Letters 9 Pages

한국탄소학회 Carbon Letters 2017, Vol.24 1 1-9 (9 pages)

Young-il Na, Young Il Song, Sun Woo Kim, Su-Jeong Suh 저
...
- 3,000원
We studied the basic properties and fabrication of reduced graphene oxide (rGO) prepared using eco-friendly reduction agents in the graphene solution process. Hydrazine is generally used to reduce graphene oxide (GO), which results in polluting emissions as well as fixed nitrogen functional groups on different defects in the graphene sheets. To replace hydrazine, we developed eco-friendly reduction agents with similar or better reducing properties, and selected of them for further analysis. In...
449.

Preparation of carbon discs using petroleum-based binder pitch reformed with carbon black

Sangmin Lee, Kyung Hoon Kim, Young-Seak Lee 한국탄소학회 Carbon Letters 4 Pages

한국탄소학회 Carbon Letters 2017, Vol.23 13 84-87 (4 pages)

Sangmin Lee, Kyung Hoon Kim, Young-Seak Lee 저
...
- 1,500원
Carbon materials are widely used in various industry applications, such as a carbon fibers, graphite brushes, aluminum engineering and binders, because carbon materials have high specific strength, high conductivity, excellent thermal shock resistance, and other favorable properties [1-4]. These carbon materials are prepared from various precursors, such as polyacrylonitrile (PAN), phenolic resins and pitches. Among these precursors, pitches are more economical than PAN and phenol resin, and it...
450.

Effects of synthesis pressure conditions on the preparation of graphene-like carbonaceous materials from organic liquid precursors by a solvothermal method

Kwan-Woo Kim, Byoung Suhk Kim, Sang Won Lee, Dong Chul Chung, Byung-Joo Kim 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2017, Vol.23 11 74-78 (5 pages)

Kwan-Woo Kim, Byoung Suhk Kim, Sang Won Lee, Dong Chul Chung, Byung-Joo Kim 저
...
- 1,500원
Carbon materials with at least one dimension of 1?100 nm are called carbon nanomaterials. A significant body of previous research in physics, chemistry and biology has demonstrated that the properties of nano-composites are significantly different than those of the bulk materials [1]. Some unique phenomena, such as the quantum tunneling effect, and surface effects, have also been observed, and attributed to the large surface area and small size of the carbon nanomaterials. It has been reported...

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