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191.

학령기 인공와우 사용 아동의 이야기 분석 사례 보고

박혜진, 배소영 한국청각언어재활학회 Audiology and Speech Research 12 Pages

한국청각언어재활학회 Audiology and Speech Research 2015, 제 11권 제 1호 7 70-81 (12 pages)

박혜진, 배소영 저
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- 4,100원
192.

초등학교 저학년 학생의 수학 성취도에 대한 예측변인 종단 연구

김애화 한국학습장애학회 학습장애연구 21 Pages

한국학습장애학회 학습장애연구 2014, Vol.11 No.1 4 73-93 (21 pages)

김애화 저
...
- 5,000원
본 연구에서는 초등학교 저학년 학생을 대상으로 1년간 추적 연구를 실시하여, 예측변인 과 같은 시점에서 측정한 수학 성취도에 대한 예측변인과 1년 후에 측정한 수학 성취도에 대한 예측변인을 살펴보고자 하였다. 이를 위해 1차 검사에 72명의 아동이 참여하였고, 1년 후인 2차 추적 검사 시에는 66명의 아동이 참여하였다. 예측변인 검사로는 일반적인 인지처 리능력(작동기억, 처리속도 검사)와 특정 학업영역별 인지처리능력(수량 변별, 빈 칸에 알맞 은 수 넣기, 수의미, 간단 덧셈, 간단 뺄셈 검사) 검사를 사용하였으며,...
193.

과학기술계 박사후 연구원의 정체성과 사회구조: 희망연구소 박사후 연구원의 사례를 중심으로

남미자 한국교육학회 교육학연구 29 Pages

한국교육학회 교육학연구 2017, 55권 3호 6 143-171 (29 pages)

남미자 저
...
- 5,800원
이 연구는 과학기술계 박사후 연구원의 정체성을 개인과 사회구조의 상호작용 맥락 속에서 분석하 였다. 분석을 위하여 기든스의 구조화 이론을 활용하였다. 구조화 이론에서는 사회구조를 ‘제약인 동 시에 가능성’ 그리고 ‘인간 행위의 매개인 동시에 결과’라고 본다. 이 연구에서는 거시적인 사회제도 나 정책 뿐 아니라 미시적인 구조로서 조직문화를 구조에 포함하는 구조화 이론의 관점을 드러내기 위하여 희망연구소라는 특정 사례에 주목하였다. 희망연구소 박사후 연구원을 둘러싼 구조적 속성은 다음과 같다. 먼저...
194.

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
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- 3,000원
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 three-dimensional ordered state after being irradiated by a laser. The X-ray diffraction data revealed that the growth of crystallite was parallel to the fiber axis, and the interlayer spacing d002 decreased from 0.353 to 0.345 nm. The results of scanning...
195.

Optical sensitivity of DNA-dispersed single-walled carbon nanotubes within cement composites under mechanical load

Jin Hee Kim, Inkyu Rhee, Yong Chae Jung, Sumin Ha, Yoong Ahm Kim 한국탄소학회 Carbon Letters 7 Pages

한국탄소학회 Carbon Letters 2017, Vol.24 12 90-96 (7 pages)

Jin Hee Kim, Inkyu Rhee, Yong Chae Jung, Sumin Ha, Yoong Ahm Kim 저
...
- 3,000원
We demonstrated the sensitivity of optically active single-walled carbon nanotubes (SWCNTs) with a diameter below 1 nm that were homogeneously dispersed in cement composites under a mechanical load. Deoxyribonucleic acid (DNA) was selected as the dispersing agent to achieve a homogeneous dispersion of SWCNTs in an aqueous solution, and the dispersion state of the SWCNTs were characterized using various optical tools. It was found that the addition of a large amount of DNA prohibited the...
196.

Physicochemical properties and methane adsorption performance of activated carbon nanofibers with different types of metal oxides

Faten Ermala Che Othman, Norhaniza Yusof, Hasrinah Hasbullah, Juhana Jaafar, Ahmad Fauzi Ismail, Noor Shawal Nasri 한국탄소학회 Carbon Letters 8 Pages

한국탄소학회 Carbon Letters 2017, Vol.24 11 82-89 (8 pages)

Faten Ermala Che Othman, Norhaniza Yusof, Hasrinah Hasbullah, Juhana Jaafar, Ahmad Fauzi Ismail, Noor Shawal Nasri 저
...
- 3,000원
In this study, composite PAN-based ACNFs embedded with MgO and MnO2 were prepared by the electrospinning method. The resultant pristine ACNFs, ACNF/MgO and ACNF/MnO2 were characterized in terms of their morphological changes, SSA, crystallinity and functional group with FESEM-EDX, the BET method, XRD and FTIR analysis, respectively. Results from this study showed that the SSA of the ACNF/MgO composite (1893 m2 g?1) is significantly higher than that of the pristine ACNFs and ACNF/MnO2 which is...
197.

Flexural, electrical, thermal and electromagnetic interference shielding properties of xGnP and carbon nanotube filled epoxy hybrid nanocomposites

Young Sil Lee, Yeon Ho Park, Kwan Han Yoon 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2017, Vol.24 6 41-46 (6 pages)

Young Sil Lee, Yeon Ho Park, Kwan Han Yoon 저
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- 3,000원
The microstructure, flexural properties, electrical conductivity, thermal conductivity and electromagnetic interference (EMI) shielding effectiveness (SE) of epoxy composites filled with multi-walled carbon nanotubes (CNTs), exfoliated graphite nanoplatelets (xGnPs) and CNT-xGnP hybrid filler were investigated. The EMI SE of the CNT-xGnP hybrid composite was higher than 25 dB at 100 MHz while that of the xGnP based composite was almost zero. The flexural modulus of the CNT-xGnP based epoxy...
198.

Catalytic hydrogenation-assisted preparation of melt spinnable pitches from petroleum residue for making mesophase pitch based carbon fibers

Dong Hun Lee, Jisu Choi, Young Se Oh, Yoong Ahm Kim, Kap Seung Yang, Ho Jin Ryu, Yong Jung Kim 한국탄소학회 Carbon Letters 8 Pages

한국탄소학회 Carbon Letters 2017, Vol.24 4 28-35 (8 pages)

Dong Hun Lee, Jisu Choi, Young Se Oh, Yoong Ahm Kim, Kap Seung Yang, Ho Jin Ryu, Yong Jung Kim 저
...
- 3,000원
We demonstrated an effective way of preparing melt spinnable mesophase pitches via catalytic hydrogenation of petroleum residue (fluidized catalytic cracking-decant oil) and their subsequent thermal soaking. The mesophase pitches thus obtained were analyzed in terms of their viscosity, elemental composition, solubility, molecular weight, softening point and optical texture. We found that zeolite-induced catalytic hydrogenation under high hydrogen pressure contributed to a large variation in the...
199.

Lyocell-based activated carbon fibers improved the adsorption of harmful gas properties when produced via dual-simultaneous treatments

Byong Chol Bai, Ji Sun Im, Young-Seak Lee 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2017, Vol.23 10 69-73 (5 pages)

Byong Chol Bai, Ji Sun Im, Young-Seak Lee 저
...
- 1,500원
In gas adsorption processes, activated carbon fibers (ACFs) are used for the adsorption of the harmful gases that are generated by coal or oil combustion, and they have been widely studied [1,2]. ACFs have been used for harmful gas removal because of their specific surface area, micropores, reproducibility, safety, and processing ability, which are beneficial properties for a wide range of applications [3,4].
200.

Effect of added mesophase pitch during the pitch synthesis reaction of PFO

Ji Hong Kim, Jong Gu Kim, Chul Wee Lee, Ki Bong Lee, Ji Sun Im 한국탄소학회 Carbon Letters 7 Pages

한국탄소학회 Carbon Letters 2017, Vol.23 7 48-54 (7 pages)

Ji Hong Kim, Jong Gu Kim, Chul Wee Lee, Ki Bong Lee, Ji Sun Im 저
...
- 3,000원
This research considers the effect of added mesophase pitch (MP) as an additive during the pitch synthesis reaction of pyrolyzed fuel oil (PFO). Two effects are generated by adding MP. One is an enhancement of thermal stability due to the high thermal property of the additive; the other is that the volatile compounds that were removed by vaporization of PFO during the thermal reaction can participate in the pitch synthesis reaction (PFO→pitch) more efficiently. The effect differs according to...

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