희토류원소에 의한 탈황 및 개재물 형태변화에 관한 연구

박종우,문인기,송규섭 대한금속재료학회(대한금속학회) 1983 대한금속·재료학회지 Vol.21 No.4

Together with the deoxidation and desulphurizaton behaviors of RE (rare earth element) treated molten steel, the changes in shape, size, and constitution of the RE inclusions after RE treatment were studied in 0.3%C-1.3%Mn-0.02%S steel using high frequency induction furnace with magnesia crucible. It was found that little additional deoxidation occurred when RE addition was made to the molten steel pre-deoxidized with 0.05% Al, whilst considerable desulphurization was observed. The effectiveness of desulphurization increased with the amount of RE added. It is believed that the desulphurization occurred mainly by the formation of RE-sulphide rather than RE-oxysulphide and the growth of RE-sulphide was accelerated by the induction stirring. During holding after RE treatment, resulphurization and fading of globular RE-inclusions, accompanied by the formation of MnS, occurred possibly due to the reoxidation of the molten steel.

동성마을노인의 생활만족에 영향을 미치는 요인에 관한 연구 -안동가일마을을 중심으로 -

박종우,김춘택 한국노년학회 2006 한국노년학 Vol.26 No.2

The aim of this paper is to testify by the resource theory what is the factor affecting the elderly's life satisfaction in Andong City PungCheonMyeon Gagokri, Gail, Andong Kwon's consanguine community. The method of this study is questionnaire and surveyed all members. The results of this study are as follows: Mubyung-Jangsu factor (which means no illness and long living), Korean elderly characteristic factor (family wel-being) - which is related to familism and related to their children's health, prosperous business and grandchildren's health- affect the elderly's life satisfaction, but the social relation doesn't affect the elderly's life satisfaction. In causal-result analysis, Mubyung-Jangsu factor, Korean elderly characteristic factor(family wel-being) have direct effects and no indirect effects on life satisfaction, and have many non-causal result effects. Judging from the view that generalized reinforcement factor, rather than econommic factor affects the horizontal and non-family relation, we can know that the traditional value controls the consanguine community in the rural society. Therefore we must consider including the generalized reinforcement factor as well as economic factor, Mubyung-Jangsu factor, Korean elderly characteristic factor(family wel-being) in resource theory, and the party concerned must think about the social welfare policy related to the family name and the generalized reinforcement factor. 본 논문은 안동시 풍천면 가곡리 가일 안동권씨 동성마을 노인들의 생활만족에 영향을 미치는 요인은 무엇인가를 자원이론으로 검증하고자 하는 내용이다. 연구방법은 질문지방법으로 안동가일지역의 노인을 전수조사했다. 분석결과 생활만족에 영향을 미치는 요인은 한국노인특성요인(가족안녕)과 무병장수요인 순으로 나타났으며 사회관계는 생활만족에 영향을 미치지 않는 것으로 나타났다. 또한 인과분석에서 한국노인특성요인(가족안녕)과 무병장수요인은 생활만족에 직접적인 효과는 있지만 간접적인 효과는 없는 것으로 나타나 비인과적 효과가 큰 것으로 나타났다. 그러나 경제적요인은 생활만족에 영향을 미치지 않지만, 일반화된 강화요인이 수평관계와 비가족관계에 영향을 미치는 것은 도시와 달리 농촌의 동성마을에는 전통적인 가치관이 지배하고 있음을 알 수 있다. 결론적으로, 이와 같은 사실은 기존의 경제적 요인, 무병장수요인, 한국노인특성요인(가족안녕)에 일반화된 강화 요인을 자원이론에 포함시켜야하며, 복지정책을 입안할 때에는 성씨와 일반화된 강화 요인을 고려하여야 한다.

An Empiric Study on the Efficiency of Internet Bond Auction in Korea

박종우,정덕훈 국제e-비즈니스학회 2007 e-비즈니스 연구 Vol.8 No.4

This study aims to analyze the efficiency of the electronic bond issue in Korea, by focusing mainly on the government agency bonds. The efficiency is defined as a lower financing cost and advantage of technologies offered by Web. This comparative study was performed by describing the characteristics of the electronic bond auction, and by analyzing empirically off-line and on-line bond issues with its stop yields and commissions using the data of the Korean government agency bonds. In off-line primary market auctions using fax or telephone, unfairness and opaqueness is believed to exist due to asymmetric information among issuers, investors, and brokerage houses. On the other hand, the introduction of an electronic bond auction system is expected to relieve the problems in the off-line bond issue and enhance transparency and fairness in the primary bond market. This is primarily because of the fair openness of information to the internet users as proved before. I also verified the hypothesis that an increase in participants can lower interest in online auctions compared to off-line auctions.

빈곤과 사회복지예산

박종우 세종 1997 빈곤문제와 사회발전 Vol.2 No.1

韓國人口의 構造的 變動과 問題點

朴宗祐 慶北大學校 文理科大學 1979 文理學叢 Vol.6 No.-

The primary concern about population problems usually centers round the size and the rate of growth of the total population disregarding the changes in the structure of the population. The Korean population has shown a substantial decline in its annual growth rate from about 3.0% in 1960 to 1.7% in 1975. But contrary to the forecast of the Korea's Third Five-Years Economic Development Plan which assumed the continued decline in the rate of growth to the level of 1.5% in 1976, a recent sample survey conducted by the Korean government reports that the expected further decline in the growth rate is retarded not by the actual changes in the underlying fertility of the women of the child bearing ages but owing to the influence of the age and sex structure of the Korean population which is originated from the baby boom cohort of the late 1950s. This fact points out that the tremendous efforts to reduce the growth rate of the Korean population are in fact offsetted by the very underlying characteristics of the population structure. Changes in the population structure in general, though the changes in the size of the total population indirectly affect the social and economic situation, determines not only the total population size but also directly influences the social and economic aspects of the society. In this respect, present paper examines the expected changes in the population structure and its social and economic implications such as current and future school-age and working-age populations, disperity of the sexes and its related effects upon social and economic phenomena arising along with the stages of the family cycle. After the Liberation from Japan, the structure of the Korean population has experienced a considerable changes owing to the changes in the levels of migration, mortality, and fertility in Korea. During the period it seems that there has been a considerable progress of the population structure in view of problems to be solved and there arises another structural problems in addition. The only way to solve these problems is considered be to be dependent upon the increasing reduction of the fertility of the Korean women. Although it is not expected to be solved easily in the near future, the continuation and government will surely bring about a significant progress in the structure of the Korean population.

혈청 Triglyceride 측정에 관한연구 -효소법과 Acetylacetone 법과의 비교-

박종우,조한의 대한병리학회 1979 Journal of Pathology and Translational Medicine Vol.13 No.3

전문직 이론에 관한 일 고찰

박종우 경성대학교 사회과학연구소 1997 社會科學硏究 Vol.13 No.-

俛仰 詩文學의 美的 特質 - 주로, 漢詩에 나타난 話者를 중심으로

박종우 한국시가문화학회 2021 한국시가문화연구 Vol.0 No.47

The Chinese poetry of Myeonang(俛仰) Songsun(宋純) was not popular for a long time, but it was carried out in earnest after the 1990s. The existing research has revealed to some extent the various materials and themes of Myeonang Hansi(漢詩). Now, it is urgent to expand and deepen the scope of understanding with a diversified approach to the work. This article is a poetic consideration to explain the aesthetic characteristics of his poetry literature through the characteristic analysis of the speaker. The key point of view first identified Myeonang Hansi in connection with the process of his life, and also attempted to consider the representative aspects of aesthetic characteristics related to poetic speakers. The speakers and aesthetic characteristics of Myeonang Hansi(漢詩) were divided into "self-confession speakers and integrity" and "governmental speakers and identity." Serious search for the truth of life and self-identification may not be all of the aesthetic qualities of poetry. In addition, it will be possible to raise the question of whether these two personalities can be clearly distinguished in the beginning. However, the point of view attempted to distinguish the two speakers, believing that they sometimes seem similar, but there are significant differences in their goals. Based on the accumulated achievements, I think it is time to review the characteristics and literature of Honam(湖南) literary group. While reflectively digesting existing research, the analysis of the starting product will explain the characteristic situation of Honam(湖南) literature. In addition, it is a task for us to redefine their literary and historical status in a temporary context linking the early and late Joseon(朝鮮). 俛仰 宋純의 漢詩는 오랫동안 학계의 주목 대상이 되지 못하다가 90년대 이후 본격적으로 연구가 이루어지기 시작했다. 기존의 연구성과를 통해 면앙 한시의 다양한 소재와 주제의 양상은 어느 정도 밝혀졌다. 이제는 작품에 대한 다각적 접근으로 이해의 폭의 확장과 심화가 절실하다. 이 글은 이러한 문제 의식을 가지고 그의 시문학에 담긴 美的 特質을 화자의 성격 분석을 통해 해명해보고자 한 試論的 고찰이다. 본고는 먼저 면앙 한시를 그가 걸어온 삶의 역정과 연계하여 파악하고, 아울러 시적 화자와 관련한 미적 특질의 대표적 양상에 대한 고찰을 시도하였다. 俛仰 漢詩의 話者와 美的 特質을 ‘自己告白的 話者와 삶의 眞實性’과 ‘觀照的 話者와 自己 正體性’으로 나누어 살펴보았다. 삶의 진실성과 자기 정체성에 대한 진지한 모색이 면앙 시문학이 가지는 미적 특질의 전부는 분명 아닐 것이다. 아울러 이 두 가지 성격이 과연 시작품 속에서 뚜렷하게 구분될 수 있는가에 대한 문제제기도 충분히 가능할 것이다. 다만, 본고는 두 화자가 때로는 유사해 보이면서도 지향하는 바에 있어서 유의할 만한 차이가 나타난다고 보고 구분을 시도한 것이다. 이제 축적된 성과들을 기반으로 호남 문인 그룹의 성격과 문학을 총체적으로 재검토할 시점에 이르렀다고 생각한다. 기존 연구를 반성적으로 소화하면서, 새로운 시각의 작품 분석을 통해 호남 문학의 특징적 제 국면을 해명할 수 있을 것이다. 아울러 조선 전기와 후기를 연결하는 漢詩史的 脈絡 속에 이들의 文學史的 位相을 재정립하는 것이 남은 과제이다.

다익 원심팬 성능예측 코드를 이용한 시로코 팬의 성능개선에 관한 연구

박종우,윤상훈,조용호,이열 한국항공우주학회 2012 한국항공우주학회 학술발표회 논문집 Vol.2012 No.4

복잡한 유동특성으로 성능예측에 어려움이 있는 다익 원심팬의 내부유동 특성 및 압력손실을 고려하여 새로운 성능예측 프로그램이 개발되었다. 국내외 규격을 준수한 시험장치가 설계/운용되어 얻어진 4가지 시로코 팬의 시험결과를 토대로 개발된 성능예측코드의 검증이 이루어졌다. 다구찌 기법으로 시로코 팬 성능의 주요 설계인자 및 그 영향을 파악하고, 성능예측코드를 이용하여 성능이 개선된 새로운 시로코 팬이 설계되었다. 새롭게 설계된 팬은 설계유량조건에서 압력상승량이 기존과 비교하여 약 10% 정도 향상되었다. Complicated internal flow characteristics have made it difficult to predict the performance of the multi-blade centrifugal fan. In this paper, new performance-prediction code for the fan was developed by considering pressure losses and internal flow characteristics. For 4 different fan models, performance tests were carried out by using a newly-developed fan tester, and the test results were compared to results of the code for code-validation purposes. Effects of Influencing design parameters were observed by using the Taguchi method, and a new fan of better pressure-increase of about 10% at the design condition was finally developed.

초소성 8090 Al-Li 합금판의 성형성

박종우,문인기,유재은 대한금속재료학회(대한금속학회) 1992 대한금속·재료학회지 Vol.30 No.2

A series of blow formings was performed to develop a forming limit diagram of a superplastic 8090 Al-Li alloy sheet. The forming limit showed minimum in major strains at. a plane strain state, and increased with increasing the absoulte value of minor strains. It was found that the grain size and volume fraction of cavities were samall, and they had little effect on the forming limit, while diffuse necking and localized necking had some influence. The minor effect of the cavitation was considered to be due to the back pressure and somewhat high strain rate during forming.