19세기 남병철 『의기집설(儀器輯說)』 혼천의 용법 분석

최홍순,김상혁,민병희,남경욱,유경한,김용기,HONG SOON CHOI,SANG HYUK KIM,BYEONG-HEE MIHN,KYOUNG-UK NAM,GEOYOUNG-HAN YOO,YONGGI KIM 한국천문학회 2024 天文學論叢 Vol.39 No.1

The armillary sphere, an astronomical observation device embodying the Orbital Heaven Theory of the Later Han Dynasty in China, holds both historical and scientific significance. It has been produced in various forms by many individuals since its inception in the era of King Sejong in the Joseon Dynasty. A prominent figure in this field was Nam Byeong-cheol (南秉哲, 1817-1863), known for his work 'Uigijipseol' (儀器輯說), published in 1859, which detailed the history, production methods, and usage of the armillary sphere. This text particularly highlights 21 applications of the armillary sphere, divided into 33 measurements, covering aspects like installation, time, and positional measurements, supplemented with explanations of spherical trigonometry. Despite numerous records of the armillary sphere's design during the Joseon Dynasty, detailed usage information remains scarce. In this study, the 33 measurements described in 'Uigijipseol' (儀器輯說) were systematically classified into six for installation, nineteen for position measurement, seven for time measurement, and one for other purposes. Additionally, the measurement methods were analyzed and organized by dividing them into the ecliptic ring, moving equatorial ring, and fixed equatorial ring of the armillary sphere. In other words, from a modern astronomical perspective, the results of schematization for each step were presented by analyzing it from the viewpoint of longitude, right ascension, and solar time. Through the analysis of Nam's armillary sphere, this study not only aims to validate the restoration model of the armillary sphere but also suggests the potential for its use in basic astronomical education based on the understanding of the 19th-century Joseon armillary sphere.

경북지방의 민화연구

유증선,성병희 安東敎育大學 1970 論文集 Vol.3 No.1

There are few remarkable works of the Korean folk-tale except some collections of fairy-tales in Korea, for the survey and research activities of them being in the beginning. I had collected with interest the informations about the folk-tales of the Kyung-Book area from 7-8 years before and engrossed in this studies with professor Byeong-Hewi Seong to bring to a successful completion of the work, receiving the research expenses from the Ministry of Education in 1969. The followings are the remarkable features of the folk-tales of this area. 1. In the results of this study, it was inferred that farmers holded the stories much more than woodcutters and fishermen; Men and women, over fifty five years, who came from farm villages were 80-90%. 2. According to the classification of the characteristics of the folk-tales, the original folk tales were the largest(80%), the humorous tales in the next, the legendary in the third, and the smallest(4.3%) were the animal-fables. 3. The tales of "the filial piety" hold the largest proportion, which are caused by the traditional thought that being dutiful to the parents is the foundation of most human behaviours, but these thoughts of the peoples are vanishing by the influence of the introduction of the Western thought Democracism. 4. The fatalism, banded down from ancient times and baised upon the thoght of the diviation of phrenologists and fortuntelleas, influenced the Korean racial-characteristic. 5. And also, it was a thought peculiar to the Koreans that, though being widowed in younger age, the widow remained chaste all her life. 6. The housewives play a special part in brining about the full relationship among the near relatives(especially brothers), and for the betterment of their connections the efforts of the wives are needed. 7. Peasants being suffered a great deal of demage from tigers in old times, the tales of rataliation against the tigers are very common. 8. The stories of "Gwa-Geo"showed brilliance, among the most stories. 9. Especially, it is the precious and very interesting tale that shellfish(mud-snails, pond-snails and fastropods) cast off their skins and changed into maidens to get married to poor bachelors, which was found all over the district. 10. Though many of the materials about funny tales were not able to be used in this study, we could gather from the Go-Geum-So-Chong that Korean people are fond of 'laughing'.

위성 ATM망에서 TCP트래픽 전달을 위한 폭주제어에 관한 연구

유재욱,김영환,박종석,최병석 동국대학교 산업기술연구원 1999 산업기술논문집 Vol.13 No.-

이 논문에서는 위성ATM망을 통하여 TCP 트래픽을 전송하는데 있어서 공정한 대역 할당을 가능케 해주는 폭주제어 방안을 제안한다. 대역 할당의 공정성은 TCP와 같은 트래픽 전공 프로토콜에서 중요한 요소이며, 현재의 프로토콜은 이러한 공정성을 제공하지 못하고 있다. 기존의 방식에서는 폭주가 발생한 교환기를 통과하는 모든 셀에 폭주알림 표시를 하게 되어 있다. 본 논문에서 제안된 방식은 폭주의 원인이 되는 전송단이 전송하는 셀에 더 많은 폭주알림 표시를 하도록 해준다. 제안된 방안은 간단한 확률적 방법을 통하여 오동작 전송단을 구별하는 방법으로 정상 전송단으로부터 오동작 전송단을 분리시킨다. 또한 오동작 전송단이 유휴 대역을 모두 차지하는 현상을 막을 수 있다는 것을 시뮬레이션을 통하여 보여주었다. 실험 결과는 유휴 대역을 보다 효율적으로 활용할 수 있다는 것을 보여준다. In this paper, an efficient congestion control algorithm for TCP over ATM over Satellite networks is proposed. This algorithm can discriminate ill-behaved user from all active users using simple probabilistic approach. Also, proposed algorithm makes firewalls between ill-behaved user and well-behaved users. We proved this property through simulations so that the algorithm can use the limited bandwidth efficiently. The proposed algorithm can by easily implemented at current networks through simple modification of TCP sender policy.

大都市 國民學校 建築計劃 基準設定을 爲한 實態調査硏究(1) : 釜山地域을 中心으로

兪吉濬,姜丙熙 동아대학교 공과대학 부설 한국자원개발연구소 1982 硏究報告 Vol.6 No.1

This study is on the point at issue of primary school campus planning to the betterment of teaching environment. The conclusions are as follow: (1) The 60 pupils per a class by prescribe in the law in force should be facing downward to the 40 pupils. (2) It should be avoided closing type in plot planning. (3) The stories of primary school building need to be restricted 3^(rd). floor. (4) The suitable width from blackboard to front row chair must be maintained. (5) The standard of play ground by prescribe in the law in force seems to be impropered.

우리나라의 炭鑛災害分析과 그 改善方案에 關한 硏究

庾炳祐 亞洲大學校 1983 論文集 Vol.6 No.-

Although steady technological progress has taken place for several years toward making coal mining a less hazardous occupation impetus was given to safety and health programs in Korea by passage of the coal mine safety act of 1970. The act embraces not only promulgation and enforcement of regulations, but technical support, worker education and training, and a broad-based research program as well. The act has been described as the most extensive and comprehensive coal mine safety program ever to be undertaken to promote the welfare of each individual coal mine industrial worker. Generally speaking, the allocation of the government funds to this program has reflected the much more severe problems of underground mining as contrasted with those of surface operations. The objectives of this research essentially have provided necessary policy information data for the establishment of the comprehensive coal mine accidental prevention plan by surveying and analysing the patterns, characteristics and tendency of the accidental factors, the accidental costs, coal miner's safety consciousness, and the general management of the coal mine industries, etc. The major contents of the research have included the followings; ● Survey the 96-coal mines (90% of the total domestic coal production) with the pre-designed coal mine survey form, and identify the problems based upon the accidental patterns and tendency, the accidental factors, and the accident costs, etc. in the domestic coal mine industries. ● All accidents reported to the MOER for the years 1965 through 1981 were analysed to determine the general trend which accidental causes had the highest number of deaths and injuries associated with them. ● Analysis the foreign coal mine accidental patterns, severity rate and frequency rate, mine laws and regulations, in order to compare with those of ours. ● Perform the pilot survey and analysis the structure of the coal miner's safety consciousness. ● Apply factor-analysis to investigate the space structure of the coal mine accidental factors. ● Develop the coal mine accident cost model based upon the multiple linear regression method. Based upon the results of this study, we have recommended the following fundamental policy directions to prevent the domestic coal mining accidents; ● Develop a new coal mine accident form for the accurate coal mine accidental pattern analysis, and establish the data basis for the coal mining accidental prevention plan. ● Promote the level of coal miner's safety consciousness by efficient safety education programs, reduce the accidental costs as a part of mine accident reduction plan. ● Increased the direct and indirect investment costs for the safety equipments and facilities, conversion of the old equipments, the new coal mining machinery and safety education programs etc. ● Improve and revise the coal mine regulatories and standards related to safety control for both miners and other employees. ● Provide the actual insurance for mine workers and reduce simultaneously, each mine industies, debts by investigating and modifying the problems related to the mining laws and regulatory.

다약제내성 발현 암세포에서 99mTc-sestamibi와 99mTc-tetrofosmin 섭취의 비교

유정아,정신영,서명랑,곽동석,안병철,이규보,이재태 대한핵의학회 2003 핵의학 분자영상 Vol.37 No.3

목적 : 다약제내성이 유발된 암세포에서 ^99mTc-sestamibi와 ^99mTc-tetrofosmin의 암세포 내 섭취정도를 비교하고 다약제내성 극복제로 잘 알려진 verapamil 과 cyclosporin A 처리에 의한 두 방사성 의약품의 암세포 내 섭취정도를 비교해 보았다. 재료 및 방법 : Doxorubicin으로 다약제내성이 유발된 HCT15/CL02 대장암 세포와 doxorubicin과 vincristine으로 다약제내성을 유발시킨 K562(Adr)과 K562(Vcr) 백혈병 세포를 사용하였다. 다약제내성의 발현은 RT-PCR로 증명하였으며, vetapamil은 1, 10, 50, 100, 200 ㎛의 농도로, cyclosporin A는 0.1, 1, 10, 50, 100 ㎛의 농도로 각각 사용하였다. MIBI와 tetrofosmin의 암세포내 섭취는 37℃에서 1 × 10_6 cell/㎖ 농도의 단일세포 부유상태에서 1, 15, 30, 45, 60분 간격으로 배양하여 각 시간대별로 상층액과 침전물을 분리하여 각각의 방사능을 감마 계수기로 측정하였다. 결과 : 다약제내성이 발현된 암세포에서는 모세포에 비하여 MIBI와 tetrofosmin의 섭취가 감소되었다. 두 방사성약품의 섭취정도는 HCT15/CL02세포와 K562(Adr)세포에서는 유의한 차이가 없었으나, K562(Vcr)세포에서는 MIBI가 tetrofosmin보다 다소 높았다. Verapamil과 cyclosporin A를 처리하였을 때 MIBI와 tetrofosmin의 섭취율은 기저치보다 모두 증가하였고, verapamil에 의한 MIBI와 tetrofosmin의 섭취율(30분)을 기저치(30분)와 비교해 본 결과 HCT15/CL02세포에서 (100㎛)는 각각 11.9배와 6.8배, K562(Adr)세포에서(50 ㎛)는 각각 14.3배와 8배, K562(Vcr)세포에서(10㎛)는 각각 7배와 5.7배 증가하였다. Cyclosporin A에 의한 MIBI와 tetrofosmin의 섭취율(30분)을 기저치(30분)와 비교해 본 결과 HCT15/CL02세포에서(50 ㎛)는 각각 10배와 2.4배, K562(Adr)세포에서(50 ㎛)는 각각 44배와 13배, K562(Vcr)세포에서(10㎛)는 각각 18.8배와 11.8배 증가하여, MIBI의 섭취율이 tetrofosmin보다 1.2배에서 4배정도 높게 나타났다. 결론 : 이러한 결과로 보아 MIBI와 tetrofosmin은 다약제내성의 발현을 평가할 수 있는 방사성의약품으로 판단되며, 다약제내성 극복제의 효능평가에는 MIBI가 tetrofosmin보다 더 우수할 것으로 사료되나, 세포주에 따른 차이가 있을 수 있으므로 보다 많은 세포주에서의 추가적인 연구가 필요할 것이다. Purpose : Cellular uptakes of ^99mTc-sestamibi(MIBI) and ^99mTc-tetrofosmin into cancer cell lines expressing multidrug resistance(MDR) were investigated and compared. The effects of verapamil and cyclosporin A, well-known multidrug resistant reversing agents, on cellular uptake of both tracers were also compared. Materials and Methods : Doxorubicin-resistant HCT15/CL02 human colorectal cell and doxorubicin-resistant K562(Adr) and vincristine-resistant K562(Vcr) human leukemic cells were studied. RT-PCR analysis was used for the detection of mdr1 mRNA expression. MDR-reversal effects with verapamil and cyclosporine A were evaluated at different drug concentrations after incubation with MIBI and tetrofosmin for 1, 15, 30, 45 and 60 min, using single-cell suspensions at 1×10_6 cell/㎖ incubated at 37℃. Radioactivity in supernatants and pellets were measured with gamma well counter. Results : The cellular uptakes of MIBI and tetrofosmin in K562(Adr) and K562(Vcr) were lower than those of parental J562 cell. In HCT15/CL02 cells and K562(Adr) cells, there were no significant difference in cellular uptakes of both tracers, but cellular uptake of MIBI was higher than that of tefrofosmin in K562(Vcr) cells. Coincubation with verapamil resulted in a increase in cellular uptakes of MIBI and tetrofosmin. Verapamil increased cellular uptakes of MIBI and tetrofosmin by HCT15/CL02 cell by 11.9- and 6.8-fold, by K562(Adr) cell by 14.3- and 8-fold and by K562(Vcr) cell by 7- and 5.7-fold in maximum, respectively. Cyclosporin A increased cellular uptakes of MIVi and tetrofosmin by HCT15/CL02 cell by 11.9- and 6.8-fold, by K562(Adr) cell by 14.3- and 8-fold and by K562(Vcr) cell by 7- and 4.7-fold in maximum, respectively. Cyclosporin A increased cellular uptakes of MIBI and tetrofosmin by HCT15/CL02 cell by 10- and 2.4-fold, by K562(Adr) cell 44- and 13-fold and by K562(Vcr) cell by 18.8- and 11.8-fold in maximum, respectively. Conclusion : Taking together, MIBI and tetrofosmin are considered as suitable radiopharmaceuticals for detecting multidrug resistance. However, MIBI seems to be a better tracer than tetrofosmin for evaluation MDR reversal effect of the modulators. Since cellular uptakes of both tracers might differ in different cell types, further experiments regarding differences in cellular uptakes between cell types should be explored.

유압관로에서 비정상유량의 속도분포에 대한 이론적 해석

유영태,조정규,최병재 조선대학교 에너지.자원신기술연구소 2001 에너지·자원신기술연구소 논문지 Vol.23 No.1

An efficient wave equation is analyzed for determining wave of taking into account viscosity and radial velocity and a oil hammer. Both frequency and transient response experiments are carried out with use of a rotary sinusoidal flow generator. The dynamic pressure of oil is measured and the obtained frequency characteristics are compared with the theoretical ones. Experimental and theoretical results make clear that the wave equation investigated here can predict wave phenomena in a wave transmission line containing a viscous liquid. i.e., in a hydraulic lines.

입력 버퍼 ATM 교환기에서의 멀티캐스트 스케줄링 알고리즘

유재욱,김영환,박종석,최병석 동국대학교 산업기술연구원 1999 산업기술논문집 Vol.13 No.-

본 논문에서는 N×N입력 버퍼 멀티캐스트 스위치의 스케줄링 알고리즘 Checkers를 제안하였다. 스케줄러를 설계할 때에는 출력이 지속적으로 교환에 참여하는 작업 유지 특성과 입력에 골고루 경쟁에 참여할 수 있는 기회를 제공하는 균일성을 만족시켜야 한다. 또 하드웨어로 구현하기가 용이하고 최대수율을 높이며 지연시간을 최소화 시켜야 한다. 제안된 Checkers 알고리즘에서는 작업 유지 특성과 균일성을 모두 만족시키기 위해서 N×N의 매트릭스에 입력 셀을 매핑하는 방법을 사용하였고, 입력에서의 경쟁 후에 발생할 수밖에 없는 나머지 셀들을 가능한 적은 수의 입력에 배분시키는 알고리즘을 적용하였다. This paper presents the design of a scheduler called Checkers for N×N input-queued multicast switch. The scheduler is required to be work-conserving, which means that no output port may be idle as long as there is an input cell destined to it and fair which means that no input cell may be held at HOL for more than a fixed number of cell times. To keep the work-conserving rule, the multicast cells are mapped onto N×N matrix. When a scheduling policy decides which cells to schedule, contention may require that it leave a residue of cells to be scheduled in the next cell time. The selection of where to place the residue uniquely defines the scheduling policy. In the end, we compared the Checkers with others through the computer simulation.

昌原 內洞貝塚에서 출토된 사슴뼈에 대한 一考察 : 깨어진 뼈와 도구흔적이 있는 뼈를 중심으로

兪炳一 동의대학교 인문과학연구소 2000 인간과 문화 연구 Vol.5 No.-

蔚山 芳基里 靑銅器時代 聚落址 : 發掘調査 성과를 中心으로

兪炳一,金亨坤 嶺南考古學會 1996 嶺南考古學 Vol.- No.19