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Multiple Representations in Preschool Numeracy: Teaching a Lesson on More-or-Less
Alfredo Bautista, Malikka Habib, Raymond Ong, Anthony Eng, Rebecca Bull 환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 28 Pages
환태평양유아교육연구학회 Asia-Pacific journal of research in early childhood education 2019, Vol.13 No.2 6 95-122 (28 pages)
Mathematics education researchers and curriculum designers have emphasized the importance of representations in fostering students’ mathematical learning. However, most classroom-based studies on representations have focused on primary and secondary levels, and there is limited literature on how preschool teachers integrate representations in regular classroom activities. This qualitative study illustrates specific ways in which preschool educators may utilize multiple representations to teach... -
Effect of the surface modification using MWCNTs with different L/D by two different methods of deposition on the IFSS of single carbon fiber-epoxy resin composite
Minerva L. Herrera-Sosa, Alex Valadez-Gonz?lez, Humberto V?zquez-Torres, Pierre G. Mani-Gonz?lez, Pedro J. Herrera-Franco 한국탄소학회 Carbon Letters 10 Pages
한국탄소학회 Carbon Letters 2017, Vol.24 3 18-27 (10 pages)
Multiwall carbon nanotubes (MWCNT) with two different (L/D) aspect ratios (7±2 μm/140±30 nm and 0.5?2 μm/8?15 nm) were surface treated using nitric acid (HNO3) and polyethyleneimine (PEI) prior to their deposition on carbon fibers (CF). Before the hierarchical reinforcement with CF-MWCNT, the CFs were treated with 3-glycidoxypropyltrimethoxysilane, a coupling agent (Z6040) and with poly(amidoamine) (PAMAM) a dendrimer containing an ethylenediamine core and amine surface groups. The MWCNT... -
Sorption behavior of slightly reduced, three-dimensionally macroporous graphene oxides for physical loading of oils and organic solvents
Ho Seok Park, Sung Oong Kang 한국탄소학회 Carbon Letters 6 Pages
한국탄소학회 Carbon Letters 2016, Vol.18 4 24-29 (6 pages)
High pollutant-loading capacities (up to 319 times its own weight) are achieved by three-dimensional (3D) macroporous, slightly reduced graphene oxide (srGO) sorbents, which are prepared through ice-templating and consecutive thermal reduction. The reduction of the srGO is readily controlled by heating time under a mild condition (at 1 10?2 Torr and 200°C). The saturated sorption capacity of the hydrophilic srGO sorbent (thermally reduced for 1 h) could not be improved further even though the... -
Characterization and influence of shear flow on the surface resistivity and mixing condition on the dispersion quality of multi-walled carbon nanotube/polycarbonate nanocomposites
Young Sil Lee, Kwan Han Yoon 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 3 86-92 (7 pages)
Multi-walled carbon nanotube (MWCNT)/polycarbonate (PC) nanocomposite was prepared by direct melt mixing to investigate the effect of the shear rate on the surface resistivity of the nanocomposites. In this study, an experiment was carried out to observe the shear induced orientation of the MWCNT in the polymer matrix using a very simple melt flow indexer with various loads. The compression-molded, should be eliminated. MWCNT/PC nanocomposite sample exhibited lower percolation thresholds (at 0.8... -
The effects of motor imagery training on brain waves in persons post-stroke
Hyang-Woon Yoon, Seong-Sik Kim 물리치료재활과학회 Physical Therapy Rehabilitation Science 10 Pages
물리치료재활과학회 Physical Therapy Rehabilitation Science 2015, 제 4권 제 1호 1 1-10 (10 pages)
Objective: The purpose of this study was to investigate whether motor imagery training (MIT) combined with physical training could have a positive influence on brain waves in stroke patients. Design: Randomized controlled trial. Methods: Twenty-four survivors of a first-time stroke participated in the study. All patients were randomly assigned to one of two groups: (1) MIT group (n=12) and (2) control group (n=12). The MIT group participated in a total of 30 minutes of motor imagery (MI) on each... -
The effects of low-level laser therapy in patients with wrist pain
Jerrold S. Petrofsky, Wendy Chung, Lesley De Fazio, Holly Harris, Michael Laymon, Ha-neul Lee 물리치료재활과학회 Physical Therapy Rehabilitation Science 6 Pages
물리치료재활과학회 Physical Therapy Rehabilitation Science 2014, 제 3권 제 1호 1 1-6 (6 pages)
Objective: Low level laser treatment (LLLT) is widely used in physical therapy practice. It is combined with physical therapy or LLLT alone. The purpose of this study is to evaluate the effectiveness of LLLT on patients’ perception of general wrist pain. Design: Longitudinal study. Methods: Forty-eight subjects with wrist pain who were in the age range of 18-70 years old were examined. The subjects were asked, via an interview and a visual analog scale, to grade their wrist pain. They were... -
成長期의 家族環境 및 生物遺傳的 性格-氣質的 特性이 孝의 情緖的, 行動的 特性에 미치는 影響
류인균, 홍강의, 조두영 대한신경정신의학회 신경정신의학 11 Pages
대한신경정신의학회 신경정신의학 1998, 제 37권 제 5호 15 921-931 (11 pages)
연구목적： 본 연구의 목적은 成長期의 家族環境과 先天的인 氣質 및 性格特性이 行動的 孝認識과 情緖的 孝認識의 形成에 미치는 特定한 選擇的 影響을 分析하는 것이다. 방 법： 多段階 群集分析方法으로 선정된 서울지역 男女大學生 132명을 대상으로 Structured Clinical Interview for DSM-III-R과 Personality Disorder Questionnaire-Revised를 사용하여 共存 Axis I 및 Axis II 精 神科 障碍 有無를 검사하였다. 共存 精神科 障碍 및 기타 배제요건을 가진 34명을 제외한 서울지역 대학생 (男子 49명, 女子 49명)과 그 父母가...
