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熱處理한 再生金屬 bracket의 引張强度와 物理的 變化에 關한 硏究
朴昌基 대한치과교정학회 1985 대한치과교정학회지 Vol.15 No.2
The purpose of this study was to measure and compare tensile strength for 3 types of new direct-bond brackets and the same brackets after recycling and to evaluate recycled brackets to determine the extent of physical alteration after recycling. Three types of new direct-bond breackets were bonded to recently extracted human premolar teeth and the tensile strength was measured by Universal Testing Machine. The brackets were recycled by thermal process and the tensile test was repeated. To determine the extent of physical alteration after recycling, the slot width and the hardness of metal brackets were measured and to analyze the microstructure of the brackets, photographs of the bracket microstructure were taken. Following results were obtained: 1. The tensile strength of recycled brackets was lower than that of new brackets, but there was no statistically significant difference.(p>0.05) 2. In the new and recycled brackets, the tensile strength of mini-mesh base bracket was statistically higher than that of conturlok base bracket,(??) but there was no statistically significant difference between production of other companies.(p>0.05) 3. The slot width of metal bracket was enlarged from 0.459mm to 0.469mm as a result of the recycling process.(p>0.05) 4. As temperature was increased in thermal treatment, the grains of bracket metal gradually became coarser and the hardness decreased.
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小麥의 F_(2)集團에 있어서 主要 農業的 形質의 遺傳變異 및 徑路係數分析
朴昶璂,金?椿 COLLEGE OF AGRICULTURE KYUNGPOOK NATIONAL UNIVERSI 1983 慶北大農學誌 Vol.1 No.-
This study was conducted to obtain the basic informations on the selection for the early and high-yielding lines in F_(2) populations of wheat. Two combinations such as Olmil-Saemil cross and Naphal-Cheonggemil cross and their eight populations were used and genetic parameters of genetic variances and path-coefficients for agronomic traits mainly in F_(2) populations were analyzed. Genetic coefficient of variability in Olmil-Saemil cross was higher in harvest index, grain number, grain yield and plant height in decreasing order, but in Naphal-Cheonggemil cross harvest index, plant height, and 1,000-grain weight were higher in order. Heading and maturing dates, plant height, and harvest index showed high hertability (0.525 - 0.808) in both crosses, but very low heritabilities were observed in grain numbers per panicle and yield. In both crosses, genetic advances(%) was higher in heading and maturing stage, but lowest in yield. High genetic advance was obtained in 1,000-grain weight of Naphal-Cheong-gemil cross. The highly significant correlations between yield and panicle number, yield and grain number per panicle were obtained, and the highest direct effect on yield was obtained in panicle number followed by grain number per pancle number.
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朴昌基 韓國外國語大學校 外國學綜合硏究센터 日本硏究所 2000 日本硏究 Vol.14 No.-
日本の近世初期は明治時代のような啓蒙時代であった。 約三百年の隔たりはあっても、 外來の新しい思想によって國を建て直そうという熱氣では同じであった。 しかし、 その性格は大きい格差がある。 明治時代のそれが外壓から生き殘る爲の啓蒙あったとすれば、 近世初期のそれは長い戰國の中壓からみずから逃れる爲の啓蒙であった。 17世紀初めに日本社會で啓蒙の基盤になって、 知識人の關心の的に成ったのは朱子學である。 朱子學には、 當時日本の思想の中心であった佛敎とは違って、 戰國の現實の問題を直接的に問いかけている。 朱子學によると、 無謨な戰爭は宿命的なのではなく、 統治者の貪欲以外に何者でもない。 日常茶飯事のような戰??は、 その貪欲に從った侵略と略奪であった事が分かった。 日本では最近, 朱子學の文獻が朝鮮より早く受け入れられて、 僧侶たちによって勉强されていた事が强調される。 しかし、 朱子學の擴散は、 16世紀末の日本による朝鮮侵略に際して、 朝鮮朝廷の日本敎化の一環によってもたらされた。 朝鮮は日本の武力をあくまでも平和的に解決する方法を探ったのである。 そして、 それを日本內部の變化に求めたのである。 壬辰倭亂の直前に日本を訪れた通信使はこのような使命を帶びたのであり、 その成果の現れが藤原惺窩の朱子學入門である。 通信使書狀官であった、 許??による惺窩の敎化の努力は殘されている文獻で分かる。 朝鮮によってもたらされた朱子學的世界觀は、 多くの共鳴者を得た。 朱子學による世界觀の變化は當時の豊臣秀吉の軍記物によって確認できる。 大村由己の『天正記』、 太田牛一の『太閤さま軍記のうち』、 小瀨甫庵の『太閤記』を比較すれば、前二者に比べて『太閤記』は朱子學によって戰國の現實に對する批判的視覺を持っている。 しかしながら、 啓蒙時代の限界として、 認識の深みにはまだ至っていない。
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ERP시스템 성과에 영향을 미치는 저항 및 변화관리 요인에 관한 연구
박창기,심수진,한영춘 한국경영교육학회 2014 경영교육연구 Vol.29 No.3
The purpose of this paper is to investigate the impact of change management and user resistance on the performance of ERP systems. Based on the literature, a research model about the resistance(psychological and behavioral) and change management factors which include top management support, IT infrastructure assets, user communication, user training, user participation, and consulting support has been developed. The dependent variables include individual performance and organizational performance. The questionnaire survey was conducted and data were collected from nationwide 197 enterprises which have introduced and operated ERP systems. The results of a smartPLS analysis provide the following findings. First, top management support, IT infrastructure assets, user communication, and consulting support were found to be significantly related to pshychological resistance while user training and user participation were related to behavioral resistance. Second, there were strong relationships between resistance and performance of ERP systems. 본 연구는 ERP 시스템 도입 시 추진하는 조직의 변화관리 요인에 의해 구성원들의 저항 수준이 영향을 받게 되며, 이러한 저항 수준은 결국 ERP 시스템 성과에 영향을 미칠 것이라 판단하고 이를 실증하고자 하였다. 이를 위해 ERP 시스템 성과와 변화관리요인에 영향을 미치는 저항 및 변화관리 요인의 역할에 대한 개념적 연구모형을 제시하고, 시스템을 도입한지 1년 이상 된 197개 기업을 대상으로 이를 검증하였다. 본 연구에서 제시한 변화관리요인은 최고경영층 지원, IT 인프라 자산, 구성원 의사소통, 구성원 교육 및 훈련, 사용자 참여, 컨설팅 지원으로 설정하였고, 구성원들의 저항은 심리적 저항과 행동적 저항으로 구분하였다. 그리고 ERP 시스템의 성과는 개인 및 조직경영성과 각각에 대하여 측정하였다. 연구결과 변화관리 요인 중 심리적 저항에 유의한 영향을 미치는 요인으로는 최고경영층 지원, IT 인프라 자산, 구성원 의사소통, 그리고 컨설팅 지원으로 나타났으며, 구성원의 행동적 저항에 유의한 영향을 미치는 요인으로는 구성원 교육훈련과 사용자 참여로 나타났다. 또한 구성원들이 느끼는 심리적 저항 수준은 행동적 저항에 직접적인 영향을 미쳤으며, 이러한 저항 수준은 모두 개인 및 조직의 경영성과에 유의한 영향을 미치는 것으로 나타났다.
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