• 디지털산업정보학회논문지
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• 제7권4호
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• pp.89-99
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• 2011

Digital edutainment games and educational content to the concept of combining learning and to draw conclusions that can be varied and fun learning program. Yet effective design. There's a lot of discussion about the systematic and scientific research, explore the difficult, but so is the growing field of endless possibility. Merely a linguistic capabilities of human intelligence and mathematical ability were measured primarily on issues raised in the traditional intelligence tests, and emerged a variety of multiple intelligences theory of human intelligence classified into 8 types and characteristics of each intelligence activities and guidelines for faculty are presented. These lessons are based on multiple intelligences theory professor activities through the design study for students to form learning activities to meet effectively and systematically conducted classes, and student-specific classes can be designed. In this study, multiple intelligences theory, based on children's edutainment content by linguistic intelligence, and intrapersonal intelligence body-kinestic intelligent and can learn by linking to content that was designed. Children interested in animation and gaming content through the feeling that you can become stiff in Korean alphabet education to solve the quests were designed to be a natural puleonagal.

• 한국안광학회지
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• 제11권2호
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• pp.143-149
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• 2006

본 연구의 목적은 콘택트렌즈의 재료로 사용되는 실리콘 고분자를 합성하여 실리콘 재질의 가스 투과성 콘택트렌즈의 함수율과 광 투과성의 문제를 해결하는 데에 있다. 실험에 사용된 monomer들로는 NVP(N-vinly-pyrrolidone), MMA(methyl methacrylate), HEMA(Hydroxyethylmethacrylate)등과 교차결합제로 EGDMA(Ethylene Glycol Dimethacrylate)를 사용하였으며, 또한 콘택트렌즈 제조의 가장 좋은 조건을 위한 많은 조합 공식을 토대로 중합한 후, 중합된 개체를 가지고 함수율 측정과 광투과율 측정을 실시하였다. 본 실험의 연구 결과 재질의 투명성과 함수율을 동시에 추구하는 고분자를 합성하였고 그들의 물성을 측정하였다.

• Fibers and Polymers
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• 제7권1호
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• pp.36-41
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• 2006

PVC and SAN are often mixed to compensate for the disadvantages of each polymer. Miscibility and thermal stability of PVC/SAN blend were investigated in this study by blending SAN polymer having 20, 24, 28, 32 % of acrylonitrile contents. Two polymers were mixed using a melt blending method with a single screw extruder. DSC thermogram was used to evaluate miscibility of the two polymers. SAN having 24 % of acrylonitrile showed the best miscibility with PVC. In order to evaluate degradation behavior, blended polymer was heat treated in DSC furnace and glass transition temperature was measured consecutively. Glass transition temperature increased continuously with annealing time due to degradation and cross-linking of polymer chains. Melt index of blended polymer was always higher than that of PVC.

• Bulletin of the Korean Chemical Society
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• 제28권9호
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• pp.1493-1498
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• 2007

In this work, alkyl methacrylate-based microgels were synthesized by an experimental design method, and their sebum absorption characteristics were investigated. The results of fractional factorial experimentation indicated that the cross-linking agent content, solvent content, and stirring speed were the main parameters in the synthesis of the microgels. The suitable synthesis conditions were determined by the response surface design method. Through a study of the monomer and solvent effects, it was confirmed that the microgel shows the highest sebum absorption ratio when t-butyl methacrylate is used as a monomer or when acetone is used as a solvent. The optimal microgel synthesis conditions for cosmetic application were determined, and the resulting microgel had a mean particle size of 4.7 μm and a sebum absorption ratio of 435%.

• Macromolecular Research
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• 제17권8호
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• pp.585-590
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• 2009

The cure behaviors, dielectric characteristics and fracture toughness of diglycidylether of bisphenol-A (DGEBA)/poly(ethylene terephthalate) (PET) blend system were investigated. The degree of conversion for the DGEBA/PET blend system was measured using Fourier transform infrared (FTIR) spectroscopy. The cure kinetics were investigated by measuring the cure activation energies ($E_a$) with dynamic differential scanning calorimetry (DSC). The dielectric characteristic was examined by dielectric analysis (DEA). The mechanical properties were investigated by measuring the critical stress intensity factor ($K_{IC}$), critical strain energy release rate ($G_{IC}$), and impact strength test. As a result, DGEBAIPET was successfully blended. The Ea of the blend system was increased with increasing PET content to a maximum at 10 phr PET. The dielectric constant was decreased with increasing PET content. The mechanical properties of the blend system were also superior to those of the neat DGEBA. These results were attributed to the increased cross-linking density of the blend system, resulting from the interaction between the epoxy group of DGEBA and the carboxyl group of PET.

• International Journal of Internet, Broadcasting and Communication
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• 제14권3호
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• pp.30-39
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• 2022

This study investigates the influence of consumer needs pertaining to brand social media pages on the consumer brand attachment formation process. We collected 278 valid responses from females who have experienced the food brands' social media pages. Following the data analysis, we developed the results as follows. First, we examined the significant influence of attachment to brand social media page needs and socialization needs on consumer content consumption engagement and content contribution engagement on brand social media pages. Then we determined that consumer engagement significantly influenced consumer brand attachment. Finally, we found consumer consumption engagement exerted a significant mediation effect on the relationship between consumer needs and brand attachment. Based on the results, we outlined the potential theoretical and marketing strategy implications of this research.

• 멤브레인
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• 제33권2호
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• pp.77-86
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• 2023

본 연구에서는 낮은 막 저항과 높은 수산화 이온 전도성을 가지는 세공 충진 이온교환막 제조법으로 연구하였다. 알칼리 내구성을 향상하기 위해 폴리 테트라 플로오 에틸렌 소재인 다공성 지지체를 사용하였고 세공에는 단량체 2-(dimethylamino)ethyl methacrylate (DMAEMA), vinylbenzyl chloride (VBC)를 이용하여 copolymer를 제조했다. 가교제는 divinylbenzene (DVB)를 사용하였고 가교제 함량별로 이온교환막을 제조하여 DMAEMA-DVB와 VBC-DMAEMA-DVB copolymer에서 가교제 함량이 미치는 영향에 관해 연구하였다. 그 결과, PTFE 소재 지지체를 이용하여 화학적 안정성이 향상했고 저압 UV 램프를 사용하여 낮은 온도에서 빠른 광중합이 가능하여 생산성을 높일 수 있는 장점이 있다. 음이온교환 막 연료전지에 요구되는 이온교환막의 물리적 및 화학적 안정성을 확인하기 위해서 인장강도와 내알칼리성 테스트를 진행하였다. 그 결과, 가교도가 증가할수록 인장강도 대략 40 MPa가 증가하였고, 최종적으로 이온전도도와 내알칼리성 테스트를 통해 가교제 함량이 증가할수록 알칼리 안정성이 증가하는 것을 확인하였다.

• Journal of Information Technology Applications and Management
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• 제28권1호
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• pp.53-61
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• 2021

The year 2020 was a time when the coronavirus infections-19 (COVID-19) caused various changes in society. In particular, the fields that have been conducted face-to-face have been greatly confused by the transition to an online non-face-to-face method, and this is the case with the field of education. There are two main advantages of offline education. The first is that we can improve our understanding through communication with teachers, and the second is that we can develop social skills through interaction with friends. But as online classes progressed due to corona 19, interaction could not be achieved. As a result, the motivation for learning has been reduced due to difficulties in real-time feedback, and the participation rate has been significantly lowered, especially in lower grades, raising concerns about the learning gap that will occur after corona 19. However, there are some cases in which online classes were conducted as effectively as offline classes by utilizing various contents. What they have in common is the use of content. Teachers generally improved the quality of education by linking interesting sights and videos that enhance learning comprehension. The provided video conveys learning-related content into stories, enabling intuitive observation. Many students were already enjoying these videos through VOD (Video on Demand) such as TV and YouTube, they were able to connect their easy access to content and interest in learning. Appropriate use of video content has rather increased the learning effect and should continue after corona 19. Therefore, it is necessary to study methodologies that apply video content efficiently to education. This study looked at the steps that needed content application through the development of education programs, and observed its meaning. Students were curious about the content, motivated to learn and participated in learning on their own. Intuitive learning, conducted through appreciation, play and content production, provided an opportunity to learn on their own in everyday life.

• 정보관리연구
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• 제40권4호
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• pp.109-133
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• 2009

생명정보 중에서 미국의 국립생명공학정보센터(NCBI)에서 제공하는 GenBank는 전 세계적으로 연구자들이 가장 많이 사용하는 대표적인 유전자정보 데이터베이스이다. 한국과학기술정보연구원(KISTI)은 GenBank의 최신 버전을 데이터베이스로 재구축하여 Bio-KRISTAL 검색엔진을 이용하여 국내 생명과학 연구자들에게 제공하고 있다. 본 논문에서는 GenBank 데이터베이스를 활용하여 과학기술정보 통합서비스인 NDSL의 논문정보, 특허정보, 생물다양성정보 등의 콘텐트와 GenBank reference 필드와 organism 필드를 상호 연계하는 서비스 모델을 설계하고 프로토타입 시스템을 개발하였다. 이를 위하여 1) NCBI FTP 사이트에서 GenBank 데이터를 수집하여, 2) GenBank 텍스트 파일을 유전자 기본정보와 참고정보로 나누어 데이터베이스로 재구축하여, 3) GenBank reference 필드에서 논문 및 특허 정보 추출을 통한 새로운 테이블을 생성하여, 4) 데이터 맵핑 기술을 이용하여 GenBank 데이터와 NDSL 데이터가 상호 연계되어 서비스되는 프로토타입 시스템을 구현하여 이종의 콘텐트간 연계 및 융합 서비스의 가능성을 확인하였다.

• 정보관리학회지
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• 제41권1호
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• pp.133-162
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• 2024

디지털화가 급속히 진행됨에 따라, 온라인 자료의 식별 및 관리의 중요성이 대두되고 있다. 특히, 디지털 콘텐츠의 효율적인 유통 및 보존을 위한 체계적인 식별체계의 필요성이 증가하고 있다. 본 연구는 이러한 시대적 요구에 부응하여, 온라인 자료의 식별 및 관리를 위한 현행 식별체계의 실태를 조사하고, 이를 납본과 연계하여 보다 체계적인 관리 및 활용 방안을 모색하는 것을 목적으로 한다. 이를 위해 온라인 자료 식별체계와 발급실태를 조사하고 온라인 자료에 관련된 선행연구를 분석하였다. 분석결과를 기반으로 한 납본 연계방안은 다음과 같이 세 가지로 요약할 수 있다. 첫째, 납본의 우선순위 및 활용성을 위해 납본과 이용의 상호보완 강화, 납본의 우선순위 부여, 납본자료의 활용성 증대 전략이 요구된다. 둘째, 국제표준번호를 기반으로 한 납본 연계 방안으로서, ISBN과 UCI의 연계 납본, 국제표준자료번호와 납본 연계, 국제표준번호와 UCI의 메타데이터연계, UCI와 ICN의 연계 통합, 납본시스템 고도화를 위한 자동화 기술 도입 전략이 요구된다. 셋째, 위에서 제안한 전략들이 그 효과적으로 작용하기 위해서는 정책적인 지원도 같이 이루어져야 할 것이다. 한국서지표준센터의 납본 역할 강화를 포함하여 출판사와의 협력강화, 납본자료에 대한 보상, 납본제도에 대한 인식 제고 및 제도적 보상 등의 측면에서 고려되어야 할 부분이 있다.