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511.

한국사 교과서에서의 국가수호가치 훼손 사례분석: 대한민국 정부수립과 6·25 전쟁을 중심으로

김주환 한국보훈학회 한국보훈논총 40 Pages

한국보훈학회 한국보훈논총 2014, 제 13권 제 2호 (통권 31집) 5 135-174 (40 pages)

김주환 저
- 6,900원
본 연구는 2013년 검정 고등학교 한국사 교과서에서의 국가수호가치 훼손 사례를 분석 하고 어떻게 개선되어야 할지를 모색하는데 목적을 두었다. 이를 위해 국가수호 가치의 핵심영역인 ‘대한민국정부 수립’과 국가존립을 위협했던 ‘6.25전쟁’을 사례로 선정했다 대한민국정부의 정통성 근거와 6.25 전쟁에서 대한민국을 수호해야 할 이유는 민주주 의 문제로 수렴하는 바， 두 가지 사례분석을 위한 준거틀로 사르토리(Sartori)와 비담과 보일(Beetham and Boyle)이 공통적으로 제시하는 주권재민의 원리와 그것을 구현하는...
512.

유아의 놀이계획-실행-평가 활동이 창의적 성향의 놀이와 행동적 자기조절력에 미치는 영향

황윤세 한국어린이미디어학회 어린이미디어연구 18 Pages

한국어린이미디어학회 어린이미디어연구 2013, 제 12권 제 2호 6 123-140 (18 pages)

황윤세 저
- 4,700원
본 연구는 놀이계획-실행-평가 활동이 유아의 창의적 성향의 놀이행동과 행동적 자기조절력에 미치는 영향을 알아보고자 하였다. 연구의 대상은 만 5세 유아 33명이고, 실험집단 유아 20명을 대상으로 8주 간에 걸쳐 ‘놀이계획-실행-평가’활동을 실시한 후 그 효과를 검증하고자 하였다. 이를 위해 공변량 분 석을 실시하였다. 연구결과는 첫째, 창의적 성향의 놀이에서는 다양한 흥미와 도전에서 변화가 있었 다. 둘째, 놀이계획-실행-평가 활동은 행동적 자기조절력 전체 및 그 하위요인인 자기통제에서 효과 가 있는 것으로...
513.

Application of a Cognitive Diagnosis Model to a Multiple-Choice English Writing Test

조수경(Cho Sookyung) 한국교육학회 교육학연구 20 Pages

한국교육학회 교육학연구 2022, 60권 7호 3 43-62 (20 pages)

조수경(Cho Sookyung) 저
...
- 4,900원
Because a cognitive diagnostic model (CDM) can provide a detailed profile of a second language learner for the purpose of diagnosing their abilities, it has been they are being used in various areas of second language acquisition and learning. However, writing has not been as extensively studied as grammar, vocabulary, or reading comprehension ability due to difficulties in scoring. To date, writing has mostly been evaluated using a direct method, that is, evaluating learners’ essays; however,...
514.

Electrochemical determination of chloramphenicol using a glassy carbon electrode modified with dendrite-like Fe₃O₄ nanoparticles

Krishnan Giribabu, Sung-Chan Jang, Yuvaraj Haldorai, Muruganantham Rethinasabapathy, Seo Yeong Oh, Arunkumar Rengaraj, Young-Kyu Han 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2017, Vol.23 6 38-47 (10 pages)

Krishnan Giribabu, Sung-Chan Jang, Yuvaraj Haldorai, Muruganantham Rethinasabapathy, Seo Yeong Oh, Arunkumar Rengaraj, Young-Kyu Han 저
...
- 3,000원
In this study, magnetite (Fe3O4) nanoparticles were electrochemically synthesized in an aqueous electrolyte at a given potential of -1.3 V for 180 s. Scanning electron microscopy revealed that dendrite-like Fe3O4 nanoparticles with a mean size of < 80 nm were electrodeposited on a glassy carbon electrode (GCE). The Fe3O4/GCE was utilized for sensing chloramphenicol (CAP) by cyclic voltammetry and square wave voltammetry. A reduction peak of CAP at the Fe3O4/GCE was observed at 0.62 V, whereas...
515.

The impact fracture behaviors of CFRP/EVA composites by drop-weight impact test

Sun-Ho Go, Hong-Gun Kim, Hee-Jae Shin, Min-Sang Lee, Hyun-Gyung Yoon, Lee-Ku Kwac 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2017, Vol.21 4 23-32 (10 pages)

Sun-Ho Go, Hong-Gun Kim, Hee-Jae Shin, Min-Sang Lee, Hyun-Gyung Yoon, Lee-Ku Kwac 저
...
- 3,000원
A drop weight impact test was conducted in this study to analyze the mechanical and thermal properties caused by the changes in the ratio of carbon fiber reinforced plastic (CFRP) to ethylene vinyl acetate (EVA) laminations. The ratios of CFRP to EVA were changed from 10:0 (pure CFRP) to 9:1, 8:2, 6:4, and 5:5 by manufacturing five different types of samples, and at the same time, the mechanical/thermal properties were analyzed with thermo-graphic images. As the ratio of the CFRP lamination was...
516.

In-situ magnetization measurements and ex-situ morphological analysis of electrodeposited cobalt onto chemical vapor deposition graphene/SiO₂/Si

Vin?cius C. De Franco, Gustavo M. B. Castro, Jeaneth Corredor, Daniel Mendes, Jo?o E. Schmidt 한국탄소학회 Carbon Letters 7 Pages

한국탄소학회 Carbon Letters 2017, Vol.21 3 16-22 (7 pages)

Vin?cius C. De Franco, Gustavo M. B. Castro, Jeaneth Corredor, Daniel Mendes, Jo?o E. Schmidt 저
...
- 3,000원
Cobalt was electrodeposited onto chemical vapor deposition (CVD) graphene/Si/SiO2 substrates, during different time intervals, using an electrolyte solution containing a low concentration of cobalt sulfate. The intention was to investigate the details of the deposition process (and the dissolution process) and the resulting magnetic properties of the Co deposits on graphene. During and after electrodeposition, in-situ magnetic measurements were performed using an (AGFM). These were followed by...
517.

Effects of maleic anhydride content on mechanical properties of carbon fibers-reinforced maleic anhydride-grafted-polypropylene matrix composites

Hyun-Il Kim, Woong Han, Woong-Ki Choi, Soo-Jin Park, Kay-Hyeok An, Byung-Joo Kim 한국탄소학회 Carbon Letters 8 Pages

한국탄소학회 Carbon Letters 2016, Vol.20 6 39-46 (8 pages)

Hyun-Il Kim, Woong Han, Woong-Ki Choi, Soo-Jin Park, Kay-Hyeok An, Byung-Joo Kim 저
...
- 3,000원
In this work, the effects of maleic anhydride (MA) content on mechanical properties of chopped carbon fibers (CFs)-reinforced MA-grafted-polypropylene (MAPP) matrix composites. A direct oxyfluorination on CF surfaces was applied to increase the interfacial strength between the CFs and MAPP matrix. The mechanical properties of the CFs/MAPP composites are likely to be different in terms of MA content. Surface characteristics were observed by scanning electron microscope, Fourier transform infrared...
518.

Effects of heat treatment time on aromatic yield of pyrolysis fuel oil-derived pitches

Hye Kyoung Shin, Min-Kang Seo, Yun Hyuk Bang, Soo-Jin Park 한국탄소학회 Carbon Letters 3 Pages

한국탄소학회 Carbon Letters 2016, Vol.19 13 104-106 (3 pages)

Hye Kyoung Shin, Min-Kang Seo, Yun Hyuk Bang, Soo-Jin Park 저
...
- 1,500원
519.

KOH-activated graphite nanofibers as CO2 adsorbents

Hui Yuan, Long-Yue Meng, Soo-Jin Park 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2016, Vol.19 12 99-103 (5 pages)

Hui Yuan, Long-Yue Meng, Soo-Jin Park 저
...
- 1,500원
Porous carbons have attracted much attention for their novel application in gas storage. In this study, porous graphite nano-fiber (PGNFs)-based graphite nano fibers (GNFs) were prepared by KOH activation to act as adsorbents. The GNFs were activated with KOH by changing the GNF/KOH weight ratio from 0 through 5 at 900°C. The effects of the GNF/ KOH weight ratios on the pore structures were also addressed with scanning electron microscope and N2 adsorption/desorption measurements. We found that...
520.

Effect of fiber-matrix adhesion on the fracture behavior of a carbon fiber reinforced thermoplastic-modified epoxy matrix

H.J. Carrillo-Escalante, A. ?lvarez-Castillo, A. Valadez-Gonz?lez, P. J. Herrera-Franco 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2016, Vol.19 6 47-56 (10 pages)

H.J. Carrillo-Escalante, A. ?lvarez-Castillo, A. Valadez-Gonz?lez, P. J. Herrera-Franco 저
...
- 3,000원
In this study, the fracture behavior of a thermoplastic-modified epoxy resin reinforced with continuous carbon fibers for two levels of fiber-matrix adhesion was performed. A carbon fiber with commercial sizing was used and also treated with a known silane, (3-glycidoxy propyl trimethoxysilane) coupling agent. Toughness was determined using the double cantilever test, together with surface analysis after failure using scanning electron microscope. The presence of polysulfone particles improved...

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