韓國 中小企業의 相對的 落後問題

辛泰坤 부산대학교 1972 論文集 Vol.14 No.1

This paper aims to analyze the current situations of Korean small business, particularly, their relative backwardness comparing with the large business. Since the inauguration of the First Five-Year Economic Development Plan in 1962, the backwardness of the small business has become more serious than before in the following aspects: 1. Of the total number of manufacturing industries, 97.1% were occupied small business and the number of employees of small business accounted for 50.1% of the total employment as of the end of 1970. 2. But the amount of value added by small business constituted only 28.5% of the total manufacturing industries at the same year. In the total output of manufacturing industries, only 30.3% was produced by small business. 3. The annual average growth rate of small business was 17.7%, while that of the total manufacturing industries was 23.7% during the period of 1966 to 1970. Thus, there was a gap of 6.0% of the growth rate between small and total manufacturing industries increased from 4.2% in 1966 to 7.2% in 1970. The causes of the backwardness of small business can be enumerated as follow: the outmoded facilities of production, the shortage of the capital, the inferior talent of management, the lower level of technology and the limited outlets for products, etc.. Among them, more important factors seemed to be insufficient of production, the shortage of the capital and the deficiency of market for the products. Therefore, I confined the extent of analysis to these three factors. To develop the small business it is necessary to readjust the industrial structure of Korea. The policy for small business should place its emphasis on increasing their productivity and on establishing a complementary relationship with large businesses.

고장력 열연강판의 드릴 가공시 공구마멸에 관한 연구

신형곤,김성일,김태영 한국공작기계학회 2001 한국생산제조학회지 Vol.10 No.2

Drilling is one of the most Important operations performed in the machining industry. And the material of the workpiece has a profound effect on the tool life, the surface finish produced and the overall economy of the process. Hot-rolled high strength steels have been used for automobile structural material, owing to high hardness and machinability of the material. However, in the drilling of hot-rolled high strength steels, the current knowledges of tool wear and machinability are insufficient. Therefore, it is desirable to monitor drill wear status and hole quality changes during the hole drilling process. Accordingly, this paper deals with the cutting characteristics of the hot-rolled high strength steels using common HSS drill. The performance variables include the drilling thrust, torque and drill wear data obtained from drilling experiments conducted on the workpiece. Also drill wear is measured by acoustic emission system and computer vision system.

美軍政 財政 金融政策의 展開와 그 性格

辛泰坤 부산대학교 상과대학 1987 釜山商大論集 Vol.54 No.-

메조포러스 물질에 담지된 팔라듐 촉매에서 메탄의 연소반응 : 티타니아 담지 효과 Effect of Titania Loading

강태구,김태진,김종호,서 곤 전남대학교 촉매연구소 1998 촉매학술발표회 Vol.- No.15

연소과정에 촉매를 사용하여 연소온도를 낮추고 완전산화시키면, 에너지를 효율적으로 이용할 수 있을 뿐 아니라 질소산화물 생성과 일산화탄소 등 불완전연소 물질을 줄일 수 있어 환경오염 방지 측면에서 매우 바람직하다. 화염이 없는 조건에서 안정적으로 열을 발생시키기 위한 중•저온 연소촉매로 활성이 높은 귀금속 성분을 지지체에 담지시켜 사용한다. 통과 유량이 크고 열 발생량이 많기 때문에, 연소촉매의 지지체는 물질과 열전달이 용이하도록 세공이 크고열적 안정성이 우수하여야 한다. 중간 크기의 세공이 발달되어 있는 메조포러스 물질은 물질전달과 열전달이 용이하다는 점에서 연소반응의 지지체로서 가능성이 높다.

이온교환법에 의한 탈질소 공정개발의 기초연구 (Ⅲ) : 희분식 반응기에서의 반응속도론 A kinetic study in the batch reactor

채용곤,이동환,김승일,윤태경,홍성수,이민규 한국환경과학회 2000 한국환경과학회지 Vol.9 No.2

A kinetic study for anion exchange was performed for commercially available Cl^- type anion exchange resin in use to remove nitrate in water. The obtained results from the batch reactor were applied to the Langmuir and Freundlich models. The constants for Langmuir model were q_max=29.82 and b=0.202, and for Freundlich model were K=5.509 and n=1.772. Langmuir model showed better fit than Frendlich model for the experimental results. Ion exchange reaction rate was also calculated and the approximate first-order reaction, rate constant k_1 was 0.16 L/㎎·hr. Effective diffusion coefficient was obtained in the range from 9.67×10 exp (-8) to 1.67×10 exp (-6) ㎠/sec for initial concentration change, and from 6.09×10 exp (-7) to 3.98×10 exp (-6) ㎠/sec for reaction temperature change. Activation energy during the diffusion was calculated as 36 ㎉/㏖.

1960년대 이후 재정 금융정책의 전개와 그 성격

辛泰坤 釜山 大學校 經營 經濟 硏究所 1989 經營 經濟 硏究 Vol.8 No.1

드릴 가공된 구멍의 상태 검출에 관한 연구

신형곤,김태영 한국공작기계학회 2003 한국생산제조학회지 Vol.12 No.3

Monitoring of the drill wear and hole quality change is conducted during the drilling process. Cutting force measured by tool dynamometer is a evident feature estimation abnormal state of drilling. One major difficulty in using tool dynamometer is that the work-piece must be mounted on the dynamometer, and thus the machining process is disturbed and discontinuous. Acoustic transducer do not disturb the normal machining process and provide a relatively easy was to monitor a machining process for industrial application. For this advantage, AE signal is used to estimate the abnormal state. In this study vision system is used to detect flank wear tendency and hole quality, there are many formal factors in hole quality decision circularity, cylindricity, straightness, and so on, but these are difficult to measure in on-line monitoring. The movement of hole center and increasement of hole diameter is presented to determine hole quality. As the results of this experiment, AE RMS signal and measurements by vision system are shown the similar tendency as abnormal state of drilling.

韓國의 工企化政策과 財閥에 관한 硏究

신태곤 釜山 大學校 經營 經濟 硏究所 1999 經營 經濟 硏究 Vol.18 No.1

재벌의 형성과 성장은 정부주도의 공업화정책과 분리하여 평가할 수 없다. 경제성장 과정에서 정부가 시장 메커니즘을 대신하여 자원배분을 주도하면서 재벌의 성장은 가속화되어 왔다. 최근 경제위기 이후 정책 패러다임이 크게 바뀌고, 정보혁명이 경영환경을 변혁시키는 전환기를 맞아 재벌 체제 역시 근본적인 리스트럭처링을 요구받고 있다고 할 수 있다.

예측감시 시스템에 의한 드릴의 마멸검출에 관한 연구

신형곤,김태영 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.2

Out of all metal-cutting processes, the hole-making process is the most widely used. It is estimated to be more than 30% of the total metal-cutting process. It is therefore desirable to monitor and detect drill wear during the hole-drilling process. One important aspect in controlling the drilling process is monitoring drill wear status. There are two systems, Basic system and Online system, to detect the drill wear. Basic system comprised of spindle rotational speed, feed rates, thrust, torque and flank wear measured by tool microscope. Online system comprised of spindle rotational speed, feed rates, AE signal, flank wear area measured by computer vision. On-line monitoring system does not need to stop the process to inspect drill wear. Backpropagation neural networks (BPNs) were used for on-line detection of drill wear. The output was the drill wear state which was either usable or failure. This paper deals with an on-line drill wear monitoring system to fit the detection of the abnormal tool state.

韓國 敍事文學의 傳記的 類型 變異

金泰坤 慶熙大學校 1985 論文集 Vol.14 No.-

This study aims at analyzing the variance of biographic type of hero's lives in Korean descriptive literature. Descriptive literature always has a hero's biographic pattern regardless of its kind. The biographic type of the descriptive literature is classified into three types: 1) sacred type, 2) secular type, and 3) combination type. The sacred type is based on super natural sanctity about the biography of gods ands heroes, whilee the secular type talks about reality of human beings. The combination type shows neutral characteristics between the sacred and secular types. In other words, the sacred type tends to emphasize on myths of ancient times while the secular type on modern novels. According to the kind of genre, the sacred type includes the descriptive shaman songs and the foundation myth while the secular one implies modern and recent novels. The combination type comprices ancient novels, folktales, legends, and Pansori (solo opera drama). The biographic type reveals the variance on its respective surface on the basis of mythical origin. The mythical origin is composed of the circulation pattern, that is a heavenly god descends from heaven to the earthly world and returns to heaven after completion of his great work. The same primordial pattern can be found in the descriptive shaman myths. The hero of biography descends from heaven to the earthly world and returns to heaven after completion of his great work. The same primordial pattern can be found in the descriptive shaman myths. The hero of biography desceuds from heaven to the earthly world and become the earthly god, or sometimes the hero of half-god half-man type. He concludes his life in the world as a secular man through this heroic process. The heavenly god has been changed to human beings through the earthly god (or hero). The biographic type of the descriptive of hero’s life differs between the sacred type and secular in accordance with the hero’s change in the descriptive literature. The main reason of variance biographic type usually depends on the social background due to the development of human intellect in review of the differenciation of sanctity. However, the writer would like to put more important reason of variance on the human beigs’s uncertainty which means human beings refuse the stagnation of a theory. In other words, a theory always circulates as shown in the biographic type from the sacred to the secular. This is why it can be assumed that the secular stagnation phenomena will bring about the next circulation of the sacred stage. Accordingly the differenciation of sanctity, as mentioned previously, is based on uncertainty. Therefore, the variance of biographic type in the descriptive literature is an example of cultural variances occurred by the circulati on principle on the basis of uncertainty.