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571.

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,...
572.

수학 학업성취도의 동질 성장모형과 변화 전환점 추적: 비선형 조각별 성장혼합모형의 적용

박희주, 류지훈 한국교육학회 교육학연구 32 Pages

한국교육학회 교육학연구 2022, 60권 4호 4 90-121 (32 pages)

박희주, 류지훈 저
...
- 6,100원
종단연구에 있어 변화의 패턴을 찾아내어 성장을 예측하는 것이 가장 핵심적이라 할 수 있다. 그 변화의 패턴은 대부분 비선형의 형태로 나타나게 되는데, 본 연구에서는 비선형 모델 중 조각별 성장혼합모형을 활용하여, 이질적 성장모형의 존재가능성과 알려지지 않은 전환점을 찾아냄으로써 성장모형을 예측하고자 한다. 이를 확인하기 위해 베이지안 추정 방법과 최대우도법을 조각별 성장혼합모형에 활용하였다. 실증적 자료인 서울교육종단연구(SELS-2010) 데이터를 활용하여 학생들의 수학 학업성취도가 시간이 지남에 따라 어떠한...
573.

영상정신치료(psychovisual therapy)

백상빈 한국무용동작심리치료학회 무용동작치료논문집 17 Pages

한국무용동작심리치료학회 무용동작치료논문집 2003, Vol.4 10 123-139 (17 pages)

백상빈 저
...
- 4,600원
인간의 정신에 대한 탐구는 오랜 역사를 그 배경으로 하고 있다. 인문학과 예술은 그동안 각 시대별로 인간의 정신적 특질을 섬세하고 개성적으로 반영해 왔다. 특히 근대 이후에는 인간정신에 대한 과학적 접근이 시작되었고 그 결과 심리학, 정신의학, 뇌 과학 등의 새로운 접근이 이루어졌으며 특히 정신병리에 대한 임상적 접근이 그 내용을 더욱 실증적으로 구체화시켰다. 정신의학은 과거 프로이드의 정신분석이론을 중요한 토대로 삼았지만 점차로 프로이드에서 벗어나 여러 갈래로 그 줄기가 나누어 졌다. 정신분석이론을...
574.

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...
575.

Green synthesis of reduced graphene oxide using ball milling

G. Calder?n-Ayala, M. Cortez-Valadez, P. G. Mani-Gonzalez, R. Britto Hurtado, J. I. Contreras-Rasc?n, R. C. Carrillo-Torres 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2017, Vol.21 12 93-97 (5 pages)

G. Calder?n-Ayala, M. Cortez-Valadez, P. G. Mani-Gonzalez, R. Britto Hurtado, J. I. Contreras-Rasc?n, R. C. Carrillo-Torres 저
...
- 1,500원
Today, finding superior methods for synthesis of graphene oxide (GO) and reduced graphene oxide (rGO) from commercial graphite, is still a challenge. The global industry requires the use of synthesis methods that are price-competitive and also use processes that are environmentally compatible. GO is a substrate used for several chemical transformations, including its reduction to related materials, such as rGO and graphene. The rGO has been used recently to increase catalytic activity in the...
576.

Biologically activated graphite fiber electrode for autotrophic acetate production from CO2 in a bioelectrochemical system

Chae Ho Im, Young Eun Song, Byong-Hun Jeon, Jung Rae Kim 한국탄소학회 Carbon Letters 5 Pages

한국탄소학회 Carbon Letters 2016, Vol.20 12 76-80 (5 pages)

Chae Ho Im, Young Eun Song, Byong-Hun Jeon, Jung Rae Kim 저
...
- 1,500원
Recently, microbial electrosynthesis (MESs) has been highlighted for the purpose of biological CO2 reduction with simultaneous production of intermediates and value-added chemicals. The bioelectrochemical system (BES), which employs microorganisms and a bacterial community as a biocatalyst, has been developed to convert CO2, a greenhouse gas, into liquid biofuels, such as ethanol and butanol, as well as platform chemicals [1]. Several bacterial species, called cathodophilic microorganisms (e.g.,...
577.

Monolithic porous carbon materials prepared from polyurethane foam templates

Jo?o Pires, Andr? Janeiro, Filipe J. Oliveira, Alexandre C. Bastos, Mois?s L. Pinto 한국탄소학회 Carbon Letters 7 Pages

한국탄소학회 Carbon Letters 2016, Vol.18 2 11-17 (7 pages)

Jo?o Pires, Andr? Janeiro, Filipe J. Oliveira, Alexandre C. Bastos, Mois?s L. Pinto 저
...
- 3,000원
Monolithic carbon foams with hierarchical porosity were prepared from polyurethane templates and resol precursors. Mesoporosity was achieved through the use of soft templating with surfactant Pluronic F127, and macroporosity from the polyurethane foams was retained. Conditions to obtain high porosity materials were optimized. The best materials have high specific surface areas (380 and 582 m2 g?1, respectively) and high electrical conductivity, which make them good candidates for supports in...
578.

Bulk graphite: materials and manufacturing process

Sang-Min Lee, Dong-Su Kang and Jea-Seung Roh 한국탄소학회 Carbon Letters 12 Pages

한국탄소학회 Carbon Letters 2015, Vol.16 No.3 1 135-146 (12 pages)

Sang-Min Lee, Dong-Su Kang and Jea-Seung Roh 저
...
- 4,100원
Graphite can be classified into natural graphite from mines and artificial graphite. Due to its outstanding properties such as light weight, thermal resistance, electrical conductivity, thermal conductivity, chemical stability, and high-temperature strength, artificial graphite is used across various industries in powder form and bulk form. Artificial graphite of powder form is usually used as anode materials for secondary cells, while artificial graphite of bulk form is used in steelmaking...
579.

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
plate showed the worst impact resistance and broke completely into two parts; this was followed by the quasi-isotropic lay-up plate that was perforated by the impact. The cross-ply composite plate exhibited the best resistance to the low-velocity impact load; in this case, the impactor bounced back. Impact parameters such as the peak impact force and absorbed energy were evaluated and compared for the impact resistant characterization of the composites made by different stacking sequences.
580.

Superhydrophobic carbon-based materials: a review of synthesis, structure, and applications

Long-Yue Meng, Soo-Jin Park 한국탄소학회 Carbon Letters 16 Pages

한국탄소학회 Carbon Letters 2014, Vol.15 No.2 5 89-104 (16 pages)

Long-Yue Meng, Soo-Jin Park 저
...
- 4,500원
Materials with appropriate surface roughness and low surface energy can form superhydrophobic surfaces, displaying water contact angles greater than 150°. Superhydrophobic carbon-based materials are particularly interesting due to their exceptional physicochemical properties. This review discusses the various techniques used to produce superhydrophobic carbon-based materials such as carbon fibers, carbon nanotubes, graphene, amorphous carbons, etc. Recent advances in emerging fields such as...

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