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291.

Creating Collective Scientific Consciousness: A Cultural-Historical Study of Early Learning about Earth and Space in the Context of Family Imaginary Play

Yijun Hao, Marilyn Fleer 환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 32 Pages

환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 2016, Vol.10 No.2 6 93-124 (32 pages)

Yijun Hao, Marilyn Fleer 저
...
- 6,100원
Based on a cultural-historical perspective, where play is conceptualized as the creation of an imaginary situation, this study seeks to examine how scientific learning is fostered through collectively created imaginary situations during everyday family practices. This study forms part of a broader study, and in this paper the focus is on a three-year-old child and his family from Mainland China. A theoretical discussion of data collected reveals that a collectively created imaginary situation...
292.

어린이집 교사의 유아코딩교육에 대한 인식과 자질에 대한 연구

천희영 한국보육지원학회 한국보육지원학회지 22 Pages

한국보육지원학회 한국보육지원학회지 2018, 제 14권 제 1호 12 227-248 (22 pages)

천희영 저
...
- 5,100원
293.

A General Educator’s Instructional Differentiations for Students with Mathematics Disabilities in Standards-Based Mathematics Classroom in the U.S.

Sun A Kim 한국학습장애학회 학습장애연구 37 Pages

한국학습장애학회 학습장애연구 2014, Vol.11 No.1 9 205-241 (37 pages)

Sun A Kim 저
...
- 6,600원
This study employed an embedded, single-case study methodology to examine how a general education teacher differentiates mathematics instruction for her students with mathematics disabilities in standardsbased mathematics classroom. The findings of this study indicated that the general education teacher endeavored to differentiate mathematics instruction for her students with mathematics disabilities using diverse components of effective mathematics instruction, but her differentiation was...
294.

A Comparison of Three Bayesian Point Estimates for Cross-Classified Multiple Membership Growth Curve Modeling

Chung Hyewon, Jeon Hyeonjeong, Park Soyoung 한국교육학회 교육학연구 26 Pages

한국교육학회 교육학연구 2021, 59권 7호 7 167-192 (26 pages)

Chung Hyewon, Jeon Hyeonjeong, Park Soyoung 저
...
- 5,500원
This simulation study evaluated parameter recovery in cross-classified multiple membership growth curve modeling under a variety of manipulated conditions, including prior distributions (inverse Wishart and uniform distributions), number of measurement occasions (3, 5), number of groups (30, 50, 100), average group size (20, 40), and non-pure hierarchical data rates (20%, 40%). Three Bayesian point estimates were compared: the posterior mean, the posterior median, and the posterior mode. With...
295.

실력주의사회에 대한 신화 해체

박남기 한국교육학회 교육학연구 33 Pages

한국교육학회 교육학연구 2016, 54권 3호 3 63-95 (33 pages)

박남기 저
...
- 6,200원
우리 사회는 실력주의 사회에 관련하여 1) 실력주의사회는 공정하고 바람직한 사회라는 믿음, 2) 우리사회는 실력주의사회가 아니라는 믿음, 3) 학벌을 타파하면 실력주의 사회가 구현될 것이라는 믿 음, 그리고 4) 실력주의 사회가 구현되면 사교육, 과도한 경쟁 등의 문제가 해결되고, 궁극적으로 인성 교육이 꽃을 피워 바람직한 세계시민이 길러질 것이라는 믿음을 가지고 있다. 우리사회는 이러한 믿 음에 근거해 보다 완벽한 실력주의사회를 구현하기 위해 애를 써왔지만 사회의 갈등과 빈부격차를 비 롯한 교육전쟁과 사교육비 등...
296.

이사와 전학이 학업성취도에 미치는 영향

김현식, 문혜진 한국교육학회 교육학연구 26 Pages

한국교육학회 교육학연구 2012, 50권 3호 11 277-302 (26 pages)

김현식, 문혜진 저
...
- 5,500원
미국의 많은 연구들이 외부환경의 급격한 변화를 가져오는 이사와 전학이 아동성장에 부 정적 영향을 미친다는 것을 보여주었다. 본고에서는 이러한 문제의식에 기반하여 한국사회 에서 학업성취도에 미치는 이사와 전학의 영향을 고찰한다. 서울아동패널 1-3차 자료를 활 용하여 4-5학년 시기 이사와 전학이 5학년과 6학년 수학 및 국어성적에 미치는 영향과 5-6 학년 시기 이사와 전학이 6학년 수학 및 국어성적에 미치는 영향을 살펴보았다. 보다 강건 한 결론을 도출하기 위하여 일반최소자승법, 절단회귀분석법, 매칭 등의 통계적...
297.

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].
298.

Mechanical and electrical properties of cement paste incorporated with pitch-based carbon fiber

Inkyu Rhee, Jin Hee Kim, Sang Hee Park, Sungho Lee, Bong Ryeul Ryu, Yoong Ahm Kim 한국탄소학회 Carbon Letters 8 Pages

한국탄소학회 Carbon Letters 2017, Vol.23 4 22-29 (8 pages)

Inkyu Rhee, Jin Hee Kim, Sang Hee Park, Sungho Lee, Bong Ryeul Ryu, Yoong Ahm Kim 저
...
- 3,000원
The compressive strength and electrical resistance of pitch-based carbon fiber (CF) in cementitious materials are explored to determine the feasibility of its use as a functional material in construction. The most widely used CFs are manufactured from polyacrylonitrile (PAN-based CF). Alternatively, short CFs are obtained in an economical way using pitch as a precursor in a melt-blown process (pitch-based CF), which is cheaper and more eco-friendly method because this pitch-based CF is basically...
299.

Nitrogen-doped carbon nanosheets from polyurethane foams and removal of Cr(VI)

Jiaqi Duan, Baohua Zhang, Huailin Fan, Wenzhong Shen, Shijie Qu 한국탄소학회 Carbon Letters 10 Pages

한국탄소학회 Carbon Letters 2017, Vol.22 7 60-69 (10 pages)

Jiaqi Duan, Baohua Zhang, Huailin Fan, Wenzhong Shen, Shijie Qu 저
...
- 3,000원
Nitrogen-doped carbon nanosheets with a developed porous structure were prepared from polyurethane foams by hydrothermal carbonization following ZnCl2 chemical activation. Scanning electron microscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, solid state 13C nuclear magnetic resonance (NMR) spectra and X-ray photoelectron spectroscopy were used to characterize the nitrogen-doped carbon nanosheet structure and composition. The removal of Cr(VI) by the N-doped carbon...
300.

Three-dimensional porous graphene materials for environmental applications

Muruganantham Rethinasabapathy, Sung-Min Kang, Sung-Chan Jang, Yun Suk Huh 한국탄소학회 Carbon Letters 13 Pages

한국탄소학회 Carbon Letters 2017, Vol.22 1 1-13 (13 pages)

Muruganantham Rethinasabapathy, Sung-Min Kang, Sung-Chan Jang, Yun Suk Huh 저
...
- 4,200원
Porous materials play a vital role in science and technology. The ability to control their pore structures at the atomic, molecular, and nanometer scales enable interactions with atoms, ions and molecules to occur throughout the bulk of the material, for practical applications. Three-dimensional (3D) porous carbon-based materials (e.g., graphene aerogels/hydrogels, sponges and foams) made of graphene or graphene oxide-based networks have attracted considerable attention because they offer low...

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