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영·유아 언어, 인지, 사회·정서 발달 평가도구 문항 개발을 위한 예비연구
이종숙,신은수,박은혜,김영태,유영의,최일선,유흥옥 이화여자대학교 교육과학연구소 2009 교육과학연구 Vol.40 No.3
본 연구는 만 2~5세 영·유아의 발달 상태를 객관적으로 평가함과 동시에 발달이 지연된 영·유아를 선별할 수 있는 발달평가도구 문항을 개발하기 위한 예비연구이다. 이를 위해 문헌고찰 및 발달관련 평가도구들을 비교 분석하여 발달지표를 선정하고, 만 2세~5세까지의 영·유아의 언어, 인지, 사회·정서발달영역을 교사관찰에 기초하여 평가할 수 있는 문항을 개발하였다. 연구대상은 대도시, 중소도시, 읍면 소재지 별로 표집 된 만 2세부터 5세까지 총 13개 유아교육기관에 다니는 435명의 영·유아들이며, 본 연구에서 최종 개발된 평가도구의 문항은 총 141문항이다. 평가도구 문항은 언어, 인지, 사회·정서발달영역별로 영·유아의 행동과 언어를 중심으로 교사가 관찰하고, 관찰하기 어려운 문항에 대해서는 단서와 kit를 제시하여 평가할 수 있도록 구성하였다. 개발된 평가도구 문항의 적절성을 알아보기 위하여 내용 타당도와 내적 신뢰도를 살펴본 결과 비교적 양호한 것으로 나타났다. This was a preliminary study to construct a developmental rating scale for understanding children's objective developmental levels and screening developmental disabilities. For this purpose, a developmental indicator was selected by a literature review and comparative analysis of related developmental assessment tests. An assessment scale based on teacher's observations to measure language, recognition, and social-emotional developmental areas was developed. The subjects were 435 young children aged 2 to 5 who lived in both urban and rural areas. A trial test consisted of 141 assessment items in the language, recognition, and social-emotional developmental domains. The developmental scale was evaluated by teachers who observed children's behavior and language, and used clues and kits. Tests on validity and reliability for confirming the appropriateness of the developed assessment scale showed that content was relatively valid and internally consistent.
Synthesis of nanoporous material from zeolite USY and catalytic application to bio-oil conversion.
Park, Hyun Ju,Jeon, Jong-Ki,Kim, Ji Man,Lee, Hyung Ik,Yim, Jin-Heong,Park, Junhong,Park, Young-Kwon American Scientific Publishers 2008 Journal of Nanoscience and Nanotechnology Vol.8 No.10
<P>A highly ordered nanoporous aluminosilicate (MMZ(USY)) was synthesized using commercially available zeolite USY as the framework source and cetyltrimethylammonium bromide as the template. The aluminosilicate was characterized by XRD, N2 adsorption, ICP-AES and TPD. The catalytic performance of the MMZ(USY) material in the conversion of bio-oil was compared with that of Al-MCM-41, which was synthesized using a direct sol-gel method. The highly accessible nanopores, hydrothermal stability and the intermediate acidic properties of MMZ(USY) correlated with the catalytic performance in the conversion of the bio-oil. The MMZ(USY) used in this study showed excellent activity, selectivity and stability for the production of desirable organic compounds, such as phenolics, with a high degree of deoxygenation.</P>
Synthesis of Dicyclopentadiene Oligomer Over Nanoporous Al-MCM-41 Catalysts
Park, Eunseo,Kim, Jinhan,Yim, Jin-Heong,Han, Jeongsik,Kwon, Tae Soo,Park, Y. K.,Jeon, Jong-Ki American Scientific Publishers 2016 Journal of nanoscience and nanotechnology Vol.16 No.5
<P>One step reaction composed of DCPD oligomerization and DCPD oligomer isomerization was investigated over nanoporous Al-MCM-41 catalysts. The effects of aluminum grafting over MCM-41 on the catalyst characteristics were studied with respect to the synthesis of TCPD isomer. Physical and chemical properties of the catalysts were analyzed by N-2 adsorption, temperature-programmed desorption of ammonia, and infrared spectroscopy of adsorbed pyridine. The overall number of acid sites as well as the number of Lewis acid sites increased with increasing of aluminum content over MCM-41. When utilizing MCM-41 and Al-MCM-41 as the catalyst, DCPD oligomerization reaction activity greatly increased compared to the thermal reaction. The highest TCPD isomer selectivity over the Al-MCM-41 catalyst with the highest aluminum content could be ascribed to the largest amount of acid sites. This study showed an increased level of TCPD isomer selectivity by an increasing level of Lewis acid sites through aluminum addition over MCM-41.</P>
Park, Jin Seul,Kim, Boram,Lee, Byong-Taek,Choi, Jong Seob,Yim, Jin-Heong The Royal Society of Chemistry 2018 Journal of materials chemistry. B, Materials for b Vol.6 No.24
<P>The inherent insolubility and brittleness of poly(3,4-ethylenedioxythiophene) (PEDOT) reduce its processability and practical applicability. Herein, we use <I>in situ</I> vapor phase polymerization (VPP) of 3,4-ethylenedioxythiophene (EDOT) on an oxidant-impregnated thermoplastic polyurethane (TPU) matrix comprising a three-dimensional silica particle assembly to produce a soft, flexible, and conductive TPU-PEDOT hybrid scaffold. The selective removal of silica yielded a highly porous (∼95%) skeletal structure, with the effective penetration, diffusion, and polymerization of EDOT resulting in uniform PEDOT formation both on the surface and the inner side of the TPU matrix. The mechanical and electrical properties of the obtained scaffold were investigated by bending, compression testing, and stress-strain and electrical measurements. The electrical resistance of the scaffold equaled 17 kΩ and did not change after ∼500-fold bending, whereas the observed elastic modulus was much lower (300 kPa) than that of TPU (3.3 MPa). <I>In vitro</I> biocompatibility was investigated by MC3T3-E1 cell culturing with cell viability evaluated using the WST assay and cell morphology examined by confocal microscopy. Thus, the soft and flexible TPU-PEDOT hybrid scaffold produced by VPP might be practically useful, implying that this preliminary investigation needs to be extended to study the behavior of muscle and nerve cells under electrical stimulation.</P>
Synthesis of Tricyclopentadiene Over Nanoporous MCM-41 Catalysts.
Park, Eunseo,Kim, Jinhan,Yim, Jin-Heong,Han, Jeongsik,Park, Young-Kwon,Jeon, Jong-Ki American Scientific Publishers 2015 Journal of nanoscience and nanotechnology Vol.15 No.7
<P>The objective of this study is to evaluate the catalytic potential of metal oxide/MCM-41 catalysts in dicyclopentadiene oligomerization/dicyclopentadiene oligomer isomerization. Molybdenum oxide, tungsten oxide, and titanium oxide were loaded on MCM-41 using the modified atomic layer deposition method. The amount of the acid site with weak strength has been increased through metal oxide deposition. The oligomer yield in dicyclopentadiene oligomerization/dicyclopentadiene oligomer isomerization did not change with increasing of the amount of acid site. The highest tricyclopentadiene isomer selectivity over the MoO3/MCM-41 catalyst could be attributed to having the highest overall number of acid sites among the catalysts.</P>
정종철(Jong-Chul Jeong),박형동(Heong-Dong Park) 한국산학기술학회 2014 한국산학기술학회 학술대회 Vol.2014 No.2
본 논문에서는 GIS를 이용하여 폐광산지역의 토양오염지도 작성에 대한 방법을 제시하고 이를 적용한 방법에 대해 평가하였다. 토양오염은 매체의 특성상 조사 측정 자료를 기반으로 지도로 표현하기위한 다양한 공간분석 방법이 연구되어 왔으며, 폐광산은 광미와 광폐수에 의한 중금속이 토양과 분리과정을 통해 공간적으로 다양한 농도 분포를 나타내고 있다. 이러한 토양오염의 공간적 변화 경향을측정 가능한 정점에서 수집된 자료를 바탕으로 토양오염지도를 제작하였다. 토양오염지역을 통과하는하천과 도로는 선적오염 경로분석이 이루어졌고, 광산입구부터 광미 등 면적오염 특성이 나타나는 지역을 구분하고 평가하여 GIS의 공간분석 기능에 의한 3차원적 오염분포 평가 가능성을 입증하기 위해데이터 설계 방법론을 제시하였다.