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Design and Implementation of Self-networking and Replaceable Structure in Mobile Vector Graphics
정구민,나승원,정두희,이양선 한국멀티미디어학회 2005 멀티미디어학회논문지 Vol.8 No.6
In this paper, self-networking and replaceable structure in vector graphics contents are presented for wireless internet service. The wireless networks over 2G or 3G are limited in the sense of the speed and the cost. Considering these characteristics of wireless network, self-networking method and replaceable structure in downloaded contents are introduced in order to save the amount of data and provide variations for contents. During the display of contents, a certain data for the contents is downloaded from the server and it is managed appropriately for the operation of the contents. The downloaded materials are reflected to the original contents using replaceable structure. Also, the downloading and modification are independent of the play. In this implementation, the data consists of control data for control and resource data for image, sound or text. Comparing to the conventional methods which download the whole data, the amount of the transmitted data is very small since only the difference is downloaded. Also, during the play of the contents, the changes are adopted immediately. The whole functions are implemented in wireless handset and the various applications are discussed.
유비쿼터스 멀티미디어 컨텐츠의 자기 네트워킹과 대체 구조에 대한 연구
정구민,박경준,가충희,안현식,문찬우,Jeong, Gu-Min,Park, Kyung-Joon,Ka, Chung-Hee,Ahn, Hyun-Sik,Moon, Chan-Woo 한국융합신호처리학회 2007 융합신호처리학회 논문지 (JISPS) Vol.8 No.4
본 논문에서는 유비쿼터스 멀티미디어 컨텐츠의 구현을 위해서 자기 네트워킹과 대체 구조를 제안한다. 유비쿼터스 멀티미디어의 여러 가지 특성 중에서 컨텐츠의 측면에서는 컨텐츠의 사실성과 실시간성이 매우 중요하다. 컨텐츠의 실시간성을 위해서 본 논문에서는 자기 네트워킹과 대체 구조를 구현하고 해석한다. 컨텐츠의 네트웍 기능을 이용하여 서버에 접속하고 스스로 업데이트 할 수 있도록 한다. 이에 따라서 전체적인 데이터 전송량을 줄일 수 있으며 마코프 체인 모델을 이용하여 제안된 구조의 처리율을 해석하여 효용성을 보인다. 또한 제안된 구조의 단말기에서의 구현과 이를 통한 어플리케이션에 대해서 정리한다. In this paper, we propose a novel self-networking and replaceable structure method for the ubiquitous multimedia. As the contents in the ubiquitous multimedia should be realistic and continuously updated in the real-time manner, an efficient scheme of a self-networking and replaceable structure is necessary. In the proposed method, the contents itself connects to the server or corresponding devices and updates itself autonomously. Also, we can reduce the total amount of data transmission comparing to the cases where the whole contents should be downloaded. A Markov chain model is introduced for the proposed structure in order to perform the throughput analysis. The whole mechanism is implemented in the wireless handset and also, various applications of the scheme are discussed.
인간 양수에 의한 생쥐 전핵기 1-세포배의 체외발생 촉진효과에 관한 연구
정구민,문신용,이진용,장윤석,Chung, Ku-Min,Moon, Shin-Yong,Lee, Jin-Yong,Chang, Yoon-Seok 대한생식의학회 1991 Clinical and Experimental Reproductive Medicine Vol.18 No.2
The purpose of this study was to evaluate the in vitro developmental promoting effect of human amniotic fluid (AF) on pronucleate 1-cell mouse embryos. The AF was obtained from five patients undergoing amniocentesis for the routine diagnosis of fetal abnormality. The supernatant was filtered ($0.22{\mu}m$) after centrifugation and stored at $-20^{\circ}C$. One-cell embryos were cultured in four study groups (10% AF, 0.4% BSA, 10% AF+0.4% BSA & no-supplement in Ham's F10) for 6 days (EXP. 1). Significantly more embryos hatched in 10% AF (P<0.0l), although no difference was found among other three groups. The embryos were also cultured in varous concentration of AF (0, 10, 50 & 100%) for 7 days (EXP. 2). The rate of hatched blastocysts was significantly higher in 10%- and 50% group than in 0% and 100%- one at day 6 (P<0.05) and day 7 (P<0.005), although no difference was found between 10% and 50%- group.
정구민,정의용,정혜영,장명준,jeong, Gu-Min,Joung, Eui-Young,Jung, Hea-Young,Jang, Myoung-Jun 한국버섯학회 2021 한국버섯학회지 Vol.19 No.3
국내 표고 품종 다양화로 버섯산업 경쟁력을 높이고자 '참아람'과 청흥버섯영농조합 보유균주인 'E140025'을 이용하여 교잡육종법을 통해 '청흥1호'를 육성하였다. 자실체 특성 결과 대조품종 보다 갓직경은 작고, 대길이는 길고, 대가 굵어 개체중이 무거웠다. 초발이기간은 '청흥1호' 24일, '설백향' 4일, '산조701호' 8일로 발이까지 대조품종보다 20일정도 늦었다. 자실체 수량은 가장적게 나타났지만, 유효수량은 '청흥1호' 6,498 g '설백향' 4,290 g, '산조701호' 5,022 g으로 가장 높았다. URP-Primer를 이용한 다형성검정을 통해 6개의 Primer에서 모본과 다른 PCR 밴드를 확인하였다. 이상의 결과, 재배기간이 길지만 개체중과 유효수량이 우수한 무포자 신품종을 육성하였다. The competitiveness of the mushroom industry can be increased by diversifying the domestic Lentinula edodes cultivar. Therefore, 'Chungheung 1ho' was cultivated by hybrid breeding method using strain 'E140025,' which was collected by the Chungheung Mushroom Farming Association. Regarding the morphological characteristics of the fruit, the cap of 'Chungheung 1ho' was smaller than that of the control cultivar, whereas, its stem was longer and thicker than that of the control cultivar. In addition, the weight of the individual fruits of the new cultivar was heavier than that of the control cultivar. The period for primordia formation was 24 days for the new cultivar, which was 16-20 days later than that of the control cultivar. Furthermore, it was found that the patterns of the PCR amplification band using six URP primers were different for 'Chungheung 1ho' than those of the mating strains.
모바일 QVGA 영상을 위한 JPEG 양자화 테이블 설계에 대한 연구
정구민,이종덕,강동욱 한국인터넷방송통신학회 2008 한국인터넷방송통신학회 논문지 Vol.8 No.1
본 논문에서는 모바일 영상을 위한 JPEG 양자화 테이블 설계 방법을 제안한다. 작은 화면에서 많은 정보를 표현해야 하는 모바일 영상의 특성을 고려하여 고주파 성분의 영향을 보정하도록 양자화 테이블을 모델링한다. 제안한 모델링 방법을 서비스되는 모바일 QVGA 영상에 적용하여 pre-emphasis factor를 최적화 하였다. 모바일 QVGA 영상에 대한 실험을 통하여 bpp와 PSNR이 향상됨을 보였다.
Coating of an antimicrobial peptide on solid substrate via initiated chemical vapor deposition
정구민,성혜정,임성갑,성봉현,김선창,정기준 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.58 No.-
We developed a simple and efficient method for the immobilization of a potent AMP (SHAP1) on thesurface of solid supports via initiated chemical vapor deposition (iCVD). The surface of the slide glass wasfunctionalized with vinyl-containing polymer by iCVD, and Cys-linked SHAP1 peptides could beimmobilized on the functionalized surface (glass and latex glove) via simple thiol-ene click chemistrywith high efficiency. The antimicrobial efficacy of the immobilized peptides was investigated against twotypical pathogenic bacteria — Escherichia coli and Staphylococcus aureus — and it was revealed thatSHAP1-GS-Cys exhibited high antibacterial efficacy (>96%).
투명대 존재/부재 햄스터 난자의 동결보존;1-단계 평형과 2-단계 융해의 효과
정구민,방명걸,김석현,신창재,김정구,문신용,이진용,장윤석,Chung, K.M.,Pang, M.G.,Kim, S.H.,Shin, C.J.,Kim, J.G.,Moon, S.Y.,Lee, J.Y.,Chang, Y.S. 대한생식의학회 1992 Clinical and Experimental Reproductive Medicine Vol.19 No.2
The present experiments were focussed to modify a short slow-cooling protocol used for freezing of early stage embryo(Testart et al., 1986) and also to apply the modified method for the cryopreservation of hamster oocytes with Zona or without. The protocol was modified by changing the 4-step equilibration into 1-step and the 1-step thawing into 2-step. The oocytes were added in 1.5M PROH and 0.1M Sucrose, seeded at $-7^{\circ}C$, slow cooled($0.3^{\circ}C$/min) to $-30^{\circ}C$ before plunging to $-196^{\circ}C$. The oocytes were thawed at $23-25^{\circ}C$ air(20sec/150sec) and/or 33-35 water(10sec). The survival of the frozen-thawed oocytes was determined by morphologic criteria and their fertilizing ability was also estimated by Sperm Penetration Assay(SPA) system(Chang et al, 1990) using fertile men semen sample. One-step equilibration showed slightly higher survival rate(83.9% vs. 71.0%) and fertilization rate(83.9% vs. 71.0%) compared with four-step(p>0.05). And two-step thawing(air & water exposing) of oocytes frozen after 1-step equilibration showed significantly higher survival rate(96.3%) than one-step thawing at air(85.2%) or water(65.0%) only(p<0.05). Therefore, by the modified method(l-step equilibration & 2-step thawing), Zona-intact(ZI) and Zona-free(ZF) oocytes were frozen and thawed. ZI-oocytes showed significantly higher survival rate(95.4%, 308/323 vs. 67.6%, 240/355) than ZF-oocytes(P<0.01). But the survival of ZF-oocytes was as high as ZI-oocytes in fourteen of twenty-four replicates. ZI-oocytes was also significantly higher fertilization rate($92.4{\pm}8.9%$ vs. $63.7{\pm}18.5%$) and higher mean number of penetrated sperm($6.2{\pm}4.2$ vs. $3.9{\\pm}3.3$) than ZF-oocytes, but not higher than control(fresh oocytes;$99.3{\pm}2.4%$, $8.4{\pm}4.2$)(P<0.001). Conclusively, this modified method will contribute to freeze effectively the hamster oocytes for simplifing of the logical consideration of performing SPA and also to freeze the human and other animal oocytes.