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나현식,안병구,안홍영 한국인터넷방송통신학회 2009 한국인터넷방송통신학회 논문지 Vol.9 No.5
본 논문에서는 IPTV를 이용한 다중 쇼핑몰 채널 서비스를 제안한다. 제안된 서비스의 기본 아이디어 및 특징은 다음과 같다. 첫째, 기존의 단방향 채널이었던 쇼핑몰의 개념을 확장시켜 양방향 대화형 채널로 만든다. 현재 케이블 채널을 통해 방송되고 있는 쇼핑몰 광고는 사업자가 일방적으로 정보를 제공하는 방식이다. 이러한 방식은 사업자와 소비자 간에 원활한 정보교환이 이뤄지기가 어렵다. 본 논문에서는 IPTV 기술을 도입함으로써 이런 문제를 해결한다. 둘째, 인터넷 쇼핑몰의 장점과 케이블TV 쇼핑몰의 장점을 결합하여 새로운 수익모델을 창출한다.
알쏭이 모자반(Sargassum confusum C. Agardh) 알긴산 분해 조효소 분해물의 알코올 침전에 의한 기호성 증진 효과
나현식,김동현,이하영,유현지,박미성,우가은,조미정,안동현 한국수산과학회 2023 한국수산과학회지 Vol.56 No.2
This study investigated the physicochemical properties and palatability-enhancing effects of the alcohol precipitate, in the enzymatic extracts of Sargassum confusum C. Agardh (SC), obsained using the crude enzyme of Shewanella oneidensis PKA 1008. We analyzed the oligosaccharides recovered from the alcohol precipitate using a thin-layer chromatography for SC-degrading extracts, pH, color, reducing sugar, and viscosity. Thin-layer chromatography showed that after treating with the crude enzyme for 60 h, the polysaccharides were degraded into tetramers, dimers, and trimers and pH increased in the alcohol precipitate (EtOH Sedi). In terms of color, the redness and yellowness of alcohol precipitate/supernatant (EtOH Sedi+Super) and the brightness of EtOH Sedi were the highest among enzyme treated for 0 h and 60 h, EtOH Sedi, and EtOH Sedi+Super. In the reducing sugar analysis, EtOH Sedi showed the lowest value of 13.63 μg/mL, and the lowest viscosity of 1.13. In terms of the sensory evaluation, EtOH Sedi+Super showed the highest value with respect to the overall preference. These results suggest that the crude enzyme of S. oneidensis PKA 1008 is effective at degrading polysaccharides, and its recovery increases the palatability of the alcohol precipitate.
羅泫植 호남대학교 1992 호남대학교 학술논문집 Vol.13 No.-
This paper described the architectural and operational characteristics of the FDDI(Fiber Distributed Data Interface) communication protocol. And the performance characteristics of FDDI networking is analyzed. The FDDI protocol accepted basically the dual token-ring topology with the optical transmission media. As the FDDI networking uses the TTR(Timed Token Rotation) access method, so it maximized the efficiency of high-speed transmission with 100 Mbps, and enhanced the throughput and real-time characteristics of frame on networking. In order to optimize the performance of the networking using the FDDI protocol, the value of TTRT(Targer Token Rotation Time) which is the core factor of TTR access method must be assigned dynamically in consideration of the constuctual status of computing resources and the factors of networking characteristics.
나현식 湖南大學校 1996 호남대학교 학술논문집 Vol.17 No.2
This paper is an attempt to propose a curriculum model on the education of the information technologies. To derive the adaptive model, the education environments of the computer, information and telecommunication are analyzed through the investigation in Kwangju-Chonnam Area. We expect that this suggested model is a guide to reinforce the information technologies to civilians and to promote the informational policies in the local government.
羅泫植 호남대학교 1991 호남대학교 학술논문집 Vol.12 No.1
The primary goals of software development are to improve the quality of products and to increase the productivity of programmers within restricted cost and time. In order to accomplish these goals it is provided the systematic management concerned with technological discipline in the development process. In this paper the phases and characteristics of some typical development life-cycle models are discussed. Thereafter I'll propose a development process model for application softwares of traditional data processing. Here, I define the phases of process, and describe the contents of activities and documents.