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정지우(Jiwoo Jeong),송병권(ByungKwen Song),김준(June Kim),안순신(Sunshin An) 한국정보과학회 1992 한국정보과학회 학술발표논문집 Vol.19 No.2
멀티미디어 응용(Multimedia Application)는 최근에 대두되고 있는 새로운 형태의 응용이다. 멀티미디어 데이타는 다양한 규격 특성을 가지고 있고, 분산 멀티미디어를 위한 통신 프로토콜 구조는 이러한 규격 특성과 통신에 따른 다양한 트래픽 특성을 고려해야 한다. 본 논문에서는 최근에 개발되고 발전되고 있는 100Mbps이상의 고속망위에서, 일반적인 멀티미디어 응용 서비스를 위한 통신 프로토콜을 제안하였고, 각 계층에 대한 역할, 기능 및 응용 계층과의 인터페이스를 위한 Primitive들을 정의하였다.
디지털 리터러시 함양을 위한 중학교 가정과 ‘성폭력 예방’ 교수-학습과정안 개발
정지우(Jiwoo Jeong),유난숙(Nan Sook Yu) 한국가정과교육학회 2023 한국가정과교육학회지 Vol.35 No.2
본 연구는 ‘성폭력 예방’을 주제로 분석, 설계, 개발, 평가 단계에 따라 디지털 리터러시 역량 함양을 위한 가정과 교수⋅학습과정안을 개발하는 데 목적을 두었다. 분석 단계에서는 2022 개정 교육과정의 총론을 분석하여 디지털 리터러시 역량 함양의 필요성을 확인하였으며 2015 개정 가정과교육과정의 ‘성폭력 예방’과 관련된 내용체계 및 성취기준과 교과서를 분석하여 교수⋅학습과정안 설계를 위한 요소들을 추출하였다. 설계 단계에서는 각 차시별로 배움목표와 내용구성, 디지털 리터러시 역량에 따른 디지털 도구 활용 계획을 설계하였다. 개발 단계에서는 ‘성폭력 예방’을 주제로 6차시의 교수⋅학습과정안과 교수⋅학습자료를 개발하고, 각 차시별 교수⋅학습 활동에서 디지털 도구를 활용할 수 있는 방안을 고안하였다. 평가 단계에서 6명의 가정교육 전문가로부터 타당도 평가를 받았으며, 5점 리커트 척도 문항 평균 결과, 본 연구에서 개발된 교수⋅학습과정안이 중학생의 디지털 리터러시 역량을 향상하는 데 적합하다는 평가를 받았다. 또한 개방형 문항에 대한 전문가 의견들을 바탕으로 교수⋅학습과정안 수정 및 보완되어 총 7차시의 교수⋅학습과정안이 완성되었다. 본 연구에서 개발된 ‘성폭력 예방’ 가정과 교수⋅학습과정안이 수업 실행을 통해 학생들의 디지털 리터러시 역량 함양에 기여하기를 기대한다. The aim of this study was to develop a comprehensive home economics teaching-learning plan, following the stages of analysis, design, development, and evaluation. The focus was on the 2015 revised home economics curriculum, specifically the ‘prevention of sexual violence,’ to enhance students' digital literacy competencies. In the analysis stage, the necessity of developing digital literacy competencies was confirmed by analyzing the 2022 revised national curriculum. Extracting elements from the 2015 revised home economics curriculum and textbooks, a digital tool utilization plan was designed in the subsequent design stage, aligning with learning goals, content composition, and digital literacy competency for each class. The development stage involved creating teaching-learning materials and digital tools for six sessions, centered around the topic of ‘prevention of sexual violence.’ In the evaluation stage, six content experts assessed the teaching-learning plans using a 5-point Likert scale and open-ended questions. The validity evaluation confirmed the effectiveness of the teaching-learning plans in improving middle school students' digital literacy competencies. Based on feedback from the experts, the plans for the six sessions were revised, with an additional session added, resulting in a total of seven sessions. It is envisioned that the home economics teaching and learning plans developed in this study can be implemented in home economics classes to foster students' digital literacy capabilities.
Jeong, Young-Hee,Kim, Yeong Ji,Kim, Eun Young,Kim, Se Eun,Kim, Jiwoo,Park, Min Jee,Lee, Hong-Gu,Park, Se Pill,Kang, Man-Jong Cambridge University Press 2016 Zygote Vol.24 No.3
<B>Summary</B><P>Many transgenic domestic animals have been developed to produce therapeutic proteins in the mammary gland, and this approach is one of the most important methods for agricultural and biomedical applications. However, expression and secretion of a protein varies because transgenes are integrated at random sites in the genome. In addition, distal enhancers are very important for transcriptional gene regulation and tissue-specific gene expression. Development of a vector system regulated accurately in the genome is needed to improve production of therapeutic proteins. The objective of this study was to develop a knock-in system for expression of human fibroblast growth factor 2 (FGF2) in the bovine β-casein gene locus. The F2A sequence was fused to the human <I>FGF2</I> gene and inserted into exon 3 of the β-casein gene. We detected expression of human <I>FGF2</I> mRNA in the HC11 mouse mammary epithelial cells by RT-PCR and human FGF2 protein in the culture media using western blot analysis when the knock-in vector was introduced. We transfected the knock-in vector into bovine ear fibroblasts and produced knock-in fibroblasts using the clustered regularly interspaced short palindromic repeats (CRISPR)/Cas9 system. Moreover, the CRISPR/Cas9 system was more efficient than conventional methods. In addition, we produced knock-in blastocysts by somatic cell nuclear transfer using the knock-in fibroblasts. Our knock-in fibroblasts may help to create cloned embryos for development of transgenic dairy cattle expressing human FGF2 protein in the mammary gland via the expression system of the bovine β-casein gene.</P>
Jiwoo Kim,Jiwon Yoon,Jaeshik Yoo,Jung-Heun Ha,Yoonhwa Jeong,Misook Kim 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
The attention has been raised on Momordica charantia as the prevention and treatment of diabetes mellitus. We fermented Momordica charantia extract (MC) by probiotic Leuconostoc mesenteroides MKSR (MKSR), Leu. mesenteroides MKJW (MKJW) or Lactobacillus plantarum MKHA 15 (MKHA15) and evaluated their functionalities. After 24h fermentation, MKSR, MKJW, and MKHA15 significantly increased the number of their viable cells with pH decrease. The α-glucosidase inhibitory activity (AGI) was the highest in MKJW-MC (58.01%) and MKSR-MC (54.66%) when fermented 12°Brix MC, 4% sucrose, and 1% maltose at pH 6.5. Both fermented MCs significantly enhanced their DPPH radical scavenging ability. MKHA15-MC did barely affect AGI and DPPH radical scavenging ability. Increased acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) inhibitory activities were observed in all fermented MCs compared to MC extract. Strong AChE and BuChE were obtained in MKSR-MC. It might be suggested that probiotic MKSR or MKJW fermented MC can be used as potential multi-heath functional products for anti-diabetic, anti-dementia, and antioxidant treatment.
Nanopatterned Contact Lens and Its Optical Application
Jiwoo Ko(고지우),Junho Jeong(정준호),Inkyu Park(박인규) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
Biocompatibility is a crucial factor in biodevices. However, many conventional micro- and nano-patterning techniques are not biocompatible due to the use of toxic chemicals. We have developed a transfer-based nanopatterning method for various structures and materials to hyaluronic acid (HA) film via a water-bridge formation from surrounding moisture. The proposed method is biocompatible because it only uses surrounding moisture and heat energy without any usage of extra chemicals. It enables transferring nano/micro-scale and thin film structures, and various functional materials such as metals and metal oxides. Nanopatterned HA film has been transferred onto a contact lens to fabricate a smart contact lens using the inherent moisture of the contact lens only. Two possible applications of the smart contact lens with rationally designed optical nanopatterns are demonstrated: (1) stereoscopy by binocular parallax via polarization of the nanoline array and (2) a cut-off filter with a nanodot array to treat Irlen syndrome.