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271.

대학생의 부모-자녀 관계와 심리적 독립에 대한 연구

송순, 박효인 한국부모교육학회 부모교육연구 21 Pages

한국부모교육학회 부모교육연구 2006, 제 3권 2호 1 5-25 (21 pages)

송순, 박효인 저
...
- 5,000원
청년기의 부모로부터의 심리적 독립은 청소년 후기의 개인적 적응과 매우 밀접하게 관련된 문제로서 중요한 발달적 과업이다. 유아기에 일어나는 첫 번째 심리적 독립이 어머니로부터 신체적으로 분리 독립된 존재라는 감각을 터득하는 시기라면 청소년 후기에 일어나는 두 번째 독립은 심리적 분리와 개별화로서 인간의 자아발달에 있어 중요한 계기를 마련하게 되는 것이다(Blos, 1979). 유아기 독립은 유아와 어머니간의 격렬한 정서적 관계의 맥락에서 자신을 분리된 존재로 인식하면서 유아의 자아경계선이 뚜렷해지며 어머니에게...
272.

The Search for Creative Networks in Guanxi Land: A Study of Social Networking related to Shanghai Expo 2010

LeeYuHsuan 한국여가문화학회 여가학연구 28 Pages

한국여가문화학회 여가학연구 2008, Vol.6 No.1 1 7-34 (28 pages)

LeeYuHsuan 저
...
- 5,700원
273.

Assessment of Teaching Aptitude of Preservice Teachers Enrolled in University-Based Teacher Credential Programs in South Korea: Providing Diagnostic Information Based on a Cognitive Diagnostic Assessment Framework

Yi Hyun Sook, Park Sejin 한국교육학회 교육학연구 27 Pages

한국교육학회 교육학연구 2022, 60권 3호 1 1-27 (27 pages)

Yi Hyun Sook, Park Sejin 저
...
- 5,600원
Teacher education programs must provide opportunities for student teachers to explore their teaching aptitude early in the program and help them to strengthen their areas of weaknesses to prepare them for the realities of teaching. This study employed the cognitive diagnostic assessment framework, which is known to be effective in providing profiles of multidimensional and inter-related attributes, such as the teaching aptitude. The attribute mastery profiles of 1,111 participants from 6 South...
274.

교육의 공정성과 적정성의 관계: 28개 OECD 회원국의 학업성취 결과를 중심으로

이전이 한국교육학회 교육학연구 22 Pages

한국교육학회 교육학연구 2019, 57권 1호 12 309-330 (22 pages)

이전이 저
...
- 5,100원
학업성취 결과에 초점을 둔 교육 형평성 논의는 크게 교육의 공정성(fairness)과 교육의 적정성(adequacy) 측면으로 구분된다. 선행연구 대부분은 여기에 대해 규범적으로 접근하고 있을 뿐 교육의 공정성과 적정성이 상호 동반되는지 혹은 배타적인지를 경험적으로 확인한 연구는 찾아보기 어렵다. 교육의 공정성과 적정성의 관계에 대한 실증적 증거는 각국이 교육결과의 형평성을 증진하기 위한 구체적인 방향을 설정하는 데 도움이 될 것이다. 이에 본 연구는 2006년부터 2015년까지 PISA에 모두 참여한 28개 OECD 회원국의 학업성취...
275.

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
...
- 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...
276.

High-energy-density activated carbon electrode for organic electric-double-layer-capacitor using carbonized petroleum pitch

Poo Reum Choi, Sang-Gil Kim, Ji Chul Jung, Myung-Soo Kim 한국탄소학회 Carbon Letters 11 Pages

한국탄소학회 Carbon Letters 2017, Vol.22 8 70-80 (11 pages)

Poo Reum Choi, Sang-Gil Kim, Ji Chul Jung, Myung-Soo Kim 저
...
- 4,000원
Activated carbons (ACs) have been used as electrode materials of electric double-layer capacitors (EDLC) due to their high specific surface areas (SSA), stability, and ecological advantages. In order to make high-energy-density ACs for EDLC, petroleum pitch (PP) precarbonized at 500?1000°C in N2 gas for 1 h was used as the electrode material of the EDLC after KOH activation. As the pre-carbonization temperature increased, the SSA, pore volume and gravimetric capacitance tended to decrease, but...
277.

EMI shielding effectiveness and mechanical properties of MWCNTs-reinforced biodegradable epoxy matrix composites

Yoon-Ji Yim, Dong Chul Chung, Soo-Jin Park 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2017, Vol.22 4 36-41 (6 pages)

Yoon-Ji Yim, Dong Chul Chung, Soo-Jin Park 저
...
- 3,000원
Biodegradable epoxy (B-epoxy) was prepared from diglycidyl ether of bisphenol A and epoxidized linseed oil. The mechanical properties of B-epoxy composites reinforced with multi-walled carbon nanotubes (MWCNTs/B-epoxy) were examined by employing dynamic mechanical analysis, critical stress intensity factor (KIC) tests, and impact strength tests. The electromagnetic interference shielding effectiveness (EMI-SE) of the composites was evaluated using reflection and absorption methods. Mechanical...
278.

Pore structure control of activated carbon fiber for CO gas sensor electrode

Byong Chol Bai, Tae-Sung Bae 한국탄소학회 Carbon Letters 4 Pages

한국탄소학회 Carbon Letters 2016, Vol.18 13 76-79 (4 pages)

Byong Chol Bai, Tae-Sung Bae 저
...
- 1,500원
279.

Flexural properties, interlaminar shear strength and morphology of phenolic matrix composites reinforced with xGnP-coated carbon fibers

Jong Kyoo Park, Jae Yeol Lee, Lawrence T. Drzal, Donghwan Cho 한국탄소학회 Carbon Letters 6 Pages

한국탄소학회 Carbon Letters 2016, Vol.17 No.1 5 33-38 (6 pages)

Jong Kyoo Park, Jae Yeol Lee, Lawrence T. Drzal, Donghwan Cho 저
...
- 3,000원
In the present study, exfoliated graphite nanoplatelets (xGnP) with different particle sizes were coated onto polyacrylonitrile-based carbon fibers by a direct coating method. The flexural properties, interlaminar shear strength, and the morphology of the xGnP-coated carbon fiber/phenolic matrix composites were investigated in terms of their longitudinal flexural strength and modulus, interlaminar shear strength, and by optical and scanning electron microscopic observations. The results were...
280.

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
...
- 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...

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