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요구사항으로부터 기능점수를 측정하기 위한 체계적인 방법
양원석,박수용,최순황,정창해,황만수,Yang, Won-Seok,Park, Su-Yong,Choe, Sun-Hwang,Jeong, Chang-Hae,Hwang, Man-Su 한국시스템엔지니어링협회 2004 시스템엔지니어링워크숍 Vol.4 No.-
Our research proposes how to, systematically, count function point from initial functional requirements based on natural language. Gradually, Function Point Analysis is used to overcome the limitation of LOC(Line Of Code) for estimating software size. Moreover, it plays an important role in cost management. Function point is derived from initial requirements and is determined by experts who have an education for function point. However, currently there are few researches to cout function point by systematic or automatic rules. Through extending our porposed method, we expect that function point is able to be counted automatically or semi-automatically. This would be our future research
양원석(Won-Seok Yang),이길용(Gil-Yong Lee),최정열(Jeong-Yeol Choi) 한국추진공학회 2012 한국추진공학회 학술대회논문집 Vol.2012 No.11
로켓-이젝터 시스템은 고속의 로켓 배기가스 주 유동(primary flow) 제트의 전단력과 압력차에 의하여 부 유동(secondary flow)을 유도하여 추력을 증가시키는 장치이다. 유도되는 부 유동의 공기 유량은 통상의 로켓 시스템에 비하여 추력은 물론 상당한 비추력 증가를 가져온다. 본 연구에서는 30톤급의 액체 로켓 추진기관에 이젝터를 장착하는 경우 추진 성능 향상을 예측하기 위한 연구를 수행하였으며, 비행 마하수에 대하여 주 유동의 변수 및 이젝터 크기 등이 추진 성능에 미치는 영향을 살펴보았다. Rocket-Ejector system is a thrust augmentation device inducing secondary flow by the shear force and pressure difference from the primary flow of rocket exhaust. The induced secondary air flow gives the advantages on thrust as well as specific impulse compared to the conventional rocket system. A theoretical study is carried out to predict the performance gain of the ejector employed to a 30 ton-class liquid rocket. The effects of primary flow variables and the ejector size on the propulsion performance parameters are investigated.
외래 도서가 한국한문학의 발전에 끼친 영향의 탐색 조선시대(朝鮮時代)의 정초(鄭樵) 「육서략(六書略)」 수용과 활용
양원석 ( Won Seok Yang ) 동방한문학회 2016 東方漢文學 Vol.0 No.66
This paper aims to look into how 「liushulve(六書略)」 of Zhengqiao(鄭樵) in Song(宋) Dynasty period was accepted and utilized by scholars in Joseon(朝鮮) Dynasty period, and its significance in the history of Joseon(朝鮮) Chinese character. 「liushulve」written by Zhengqiao which can be said to be a theoretical book of Chinese character is included in Vol.31~Vol.35 of 『Tongzhi(通志)』, which contains the contents he studied with regard to concepts of liushu(六書) and which he classified and proposed with regard to Chinese character on the basis of concepts of liushu. This 「liushulve」 was first introduced in Joseon`s academic world by Lee Hyeongsang(李衡祥) and Lee ik(李瀷). Also, 「Wenzicewen(文字策問)」 of Jeongjo(正祖) and Duicewen(對策文) written by various followers included regular and concrete discussions about related contents proposed from 「liushulve」. Also, Lee Deokmoo(李德懋), Lee Kyukyung(李圭景), Heo jeon(許傳) et al. used to utilize the contents of 「liushulve」 for their historical research or as basis of their arguments. Like this, 「liushulve」 can be said to be one of foreign books scholars in the latter part of Joseon Dynasty actively used for studying Chinese character. 「liushulve」 was evaluated in a very differently respectively in Song(宋), Yuan(元), Ming(明) Dynasty period and Qing(淸) Dynasty period. So to speak, in the era of Song·Yuan·Ming, it was evaluated to be the typical theoretical book on Chinese character which deeply studies liushu, but in the era of Qing Dynasty, as a rule, it tended to be negatively evaluated. In the meantime, scholars in the latter par of Joseon Dynasty, which is the same age as Qing, tended to positively utilize 「liushulve」 placing importance on it. This aspects can be said to be features of Joseon Chinese character different from Chinese ones.