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신현주,김근우,정일호 韓國體育大學校附屬 體育科學硏究所 1997 韓國體育大學校附屬 體育科學硏究所論文集 Vol.16 No.1
The purpose of this study was Respiratory and Circulatory function 12child(6 girls, 6 boys) who are the mentally handicapped child participating in the sports center program. The result as following. 1. At the Rest. There was no significent diffence between boys and girls for the Respiratiory and Circulatory funtion at the rest, but, boys 1ℓ/min higher than girls at the VE, also VO2 was boys 0.7㎖/kg/min hgih comparied with girls by weight, but there was no significant between boys and girls of Heart Rate at the Rest. 2. At the Exercise Stress Test. There was significant difference boys 7.2ℓ/min higher(p<.05) than girls by weight. in the Vo2max of Respiratory and Circulatory funtion by work load. There was no significant difference between boys and girls, boys 5.5beats/min higher than girls in the maximal Heart Rate and boys 2.62ℓ/min higher than girls in the maximal breathing capacity, also there was no significant difference in Vo2max by work load.
Methylmethacrylate와 n-Butylalcohol의 에스테르 교환반응에 관한 연구
鄭舜旭,朴根浩,孫秉淸,金忠一 弘益大學校 1988 弘大論叢 Vol.20 No.2
The transesterification reaction between methylmethacrylate and n-butyl alcohol was kinetically investigated in the presence of constant quantity of inhibitor and various metal acetate catalyst at 120℃. The quantity of n-butylmethacrylate produced in the reaction flask was measured by gas-chromatography, and the reaction rate was investigated by measuring of the quantity of the product the reaction under various catalysts. The transesterification was carried out in the first order reaction kinetics with respect to the concentration of methylmethacrylate and n-buty1 alcohol, respectively. The linear relationship was show between rate constant and absolute temperatures, and the activation energy of 14.7Kcal for the reaction with zinc acetate catalyst was calculated. The maximum reaction rate was appeared at the range of 1.5 to 1.6 of electro-negativity of metal ions.
박경배,임경묵,강경인,김정일,정근원,이광배,김현욱 명지대학교 대학원 1997 대학원논문집 Vol.1 No.-
As recently the need for electronic commerce and infra information system using Internet increases, several organizations have attempted to develop mutual authentication mechanism between Certification Authorities(CA's) as well as fundamental authentication mechanism, based on Public-key. In this paper, we propose a new efficient authentication protocol which is applicable to various servers. For the protocol, we complement Public-key certificate structure and authentication protocol defined in X.509 with self-arithmetic function and data security function of 1C card.
배지조성에 따른 포플라 Callus의 Anthocyanin 생산
방혜진,이승우,최근원,정인식,설일환 慶熙大學校 1997 論文集 Vol.26 No.-
Studies were carried out to investigate the effect of cultural media on callus growth and anthocyanin production using the callus derived from the leaf discs of the Populus hybrid (Populusnigra × Populus maximowiczii cv. Yanghwangchul). Callus growth was the best in SH medium supplemented with 30 g·liter^-1 sucrose whereas anthocyanin production was maximum in White medium. But the amount of anthocyanin biosynthesis per vessel was the best in SH medium. Callus growth was similar in SH medium containing sucrose, fructose of glucose, but anthocyanin biosynthesis was enhanced in SH medium containing sucrose. Sucrose concentrations of 3.5% was the best for both callus growth and total amount of anthocyanin biosynthesis per vessel. Maltose suppressed both callus growth and anthocyanin biosynthesis. Callus growth was enhanced by higher concentrations(2X) of KNO_3 and CuSO_4, and by standard concentrations(1X) of CaCl_2 and H_3BO_3 in the medium. Total amount of anthocyanin biosynthesis was, however, somewhat different from the pattern of salts effects on callus growth.
국내 전파환경에 적합한 지상망간 전파간섭 조정방안 연구
이일근(Ill-Keun Rhee),박병석(ByungSeok Park),최인식(In-Sik Choi) 한국정보기술학회 2008 한국정보기술학회논문지 Vol.6 No.1
In this paper, we proposed a radio-wave propagation prediction simulator that predicts field strength and propagation interference for domestic environments. This simulator is obtained by compensating parameters based on both Rec. ITU-R P.1546-2 algorithm and real measured data, and thereby has the form of an mathematical expression in the given environment. we showed that the developed simulator in this paper is very robust by comparing simulation results with real measured data. Furthermore, an illustrative example of the simulator is given for the DTV service.