인체 공중 동작 시뮬레이션 프로그램 개발

성낙준,권영후 한국운동역학회 1994 한국운동역학회지 Vol.4 No.2

A comprehensive simulation software package was developed in C base on the work done by Yeadon et al.(1990) and Kwon (1993a) in the aim of making it easy to apply the experimental simulation technigues to the human airborne movement studies. This package consists of 3 programs: simulation variable computation program (PREP), simulation program (SIM) and the 3-dimensional graphic program (3DMAN). All programs are driven by an easy-to-use menu system and written compatible to KWON3D Motion Analysis Package Version 2.1 (Kwon, 1993b). Program PREP consists of 4 menus: `Edit Data´, `Prepare´ `Angular Momentum´ and `Optimization´. The `Edit Data´ environment is an editor for the lengths of the segments and body lines. The `Prepare´ menu computes the internal orientation angles of the segments while the `Angular Momentum´ menu computes the mean airborne angular momentum of the body and other initial conditions such as the initial position and velocity of the body CM and the initial external orientation of the body. The `Optimization´ menu performs angular momentum optimization proposed by Kwon (1993a). A geometric 15-segment body model - Yeadon-Kwon model (Kwon, 1993b) - with at most 38 degrees of freedom including 3 external orientation angles (somersault, inclination and twist angles) was employed to compute the simulation variables. SIM consists of 2 menus: `Edit Angles´ and `Simulate´. The `Edit Angles´ environment is an editor for the internal orientation angles of the segments. Users can intentionally manipulate the internal orientation angles for the simulation of modified trials. The program displays time-angle curves segment by segment. The `Simulate´ menu actually performs simulation. The initial conditions can be directly manipulated in the program menu environment. The simulation program was tested by several theoretical configurations to screen out the flaws in the theory and to isolate coding mistakes. The simulated results were compared with the predicted results and the program showed good agreements between the simulated results and the theoretical predictions. The simulation program was then applied to several gymnastic maneuvers and springboard dives for testing. 3DMAN was developed in the extension of the traditional `Stick Figure´ graphics. The program is segment-oriented and the 3-D shape of each segment is defined defined independently in a graphic model file to allow the users to use different body models with different, combinations of segments. The model file was designed easy to edit so as to allow the users to change the graphic model easily to meet their specific needs. The graphic model file can be edited using any text editor such as `EDIT´ of DOS. Once the `3-D Graphics´ option is activated followed by the registration of the graphic model files, the program draws the 3-D shapes of the segments whose model files are registered. All the graphics-related menus including registration of the segment graphic model files are accessible within the graphic environment.

청주시 토지이용의 특성과 공간구조적 해석

권상준,이은엽 淸州大學校 都市·地域開發硏究所 1996 都市·地域開發硏究 Vol.2 No.-

This study focus on the issue that the urban land uses are neither fixed nor rigid even though the contex of urban character is corelated to the social, historical and cultural bad ground. This study find on the spatial structure transition corelated to the characterized land uses that could show the biogentic and energenic integrations of the urban functions. The findings of the transition abstract as follow: a. The trend of the residential areas in Chongju can be represented as a simple formular Yi=13.85+(1.99×Xi). b. The trend of the commerical areas in Chongju can be represented as a simple formular Yi=-3.42+ (1.99×Xi). c. The trend of the indurstrial areas in Chongju can be represented as a simple formular Yi=2.44+(0.762×Xi). d. The trend of the open space areas in Chongju can be represented as a simple formular Yi=250.3+(-4×Xi).

넙치, Paralichthys olivaceus의 수온 자극 스트레스에 대한 사료첨가제 투여 효과

권문경,박상언,방종득,조병열,이상민,박수일 한국어병학회 2003 한국어병학회지 Vol.16 No.3

본 연구는 넙치의 수온 스트레스에 대한 사료첨가제 (미역 5%, 미역 10%, 어보산 0.5%, 고추냉이 잎 2%, 고추냉이 줄기 2%)의 영향을 혈액학적, 면역학적 측면과 Edwardsiella tanda를 사용하여 질병에 대한 저항성으로서 평가하였다. 혈장의 글루코즈와 콜티졸 농도는 1차 수온 변동 후 대조구에 비하여 미역 5%와 고추냉이잎 2% 첨가구에서 유의적으로 낮게 나타났다(P〈0.05). 1차 수온 변동 후 혈장 라이소자임 활성과 E. tarda의 공격 시험 후 생존율은 미역 5%첨가구에서 대조구에 비하여 유의적으로 높게 나타났다(P〈0.05). 본 실험 결과 미역 5% 첨가 사료 투여는 넙치의 스트레스 상태에서 질병 감염에 대한 저항성을 높일 수 있을 것으로 사료된다. The effect of each dietary supplements (Undaria 5%, Undaria l0%, Obosan 0.5%, Wasabi leaf 2%, Wasabi stem 2%) on the water temperature fluctuation in juvenile olive flounder (Puralichthys olivaceus) was investigated. The response to stress was assessed in terms of effects on haematological and immunological, and resistance against Edwurdsiella tarda infection. Plasma glucose and cortisol levels were significantly lower in 5% undaria and 2% wasabi leaf supplement groups than the controls after the first change of water temperature (P<0.05). The plasma lysozyme activities and the survival rates from E. tarda infection were significantly higher in the 5% undaria supplement groups than the control (P<0.05). These results suggest that the 5% undaria supplement seems to be contributable to the increased disease resistance on olive flounder.

냉각수온 변화에 따른 가솔린 기관 특성에 관한 실험적 연구

권기린,홍성수 濟州大學校 産業技術硏究所 2000 산업기술연구소논문집 Vol.11 No.1

The purpose of this study is to prevent the stick, scuffing. scratch between piston and cylinder in advance, to obtain data for duration test in actual engine operation. The temperature gradient in cylinder bore according to coolant temperature were measured in use of 1.5 1 class gasoline engine. 20 thermocouples were installed at points of 2mm inside from cylinder wall near top ring of piston in cylinder block. which points have suffered major thermal loads and suggested as proper measurement points for engine design by industrial engineers. Under full load and 70%. 80% and 90% coolant temperature conditions. the temperature in cylinder block and engine oil increased gradually in according to the increase of coolant temperature, the Siamese side temperature of top dead center is 142% in peripheral distribution. that is about 20% higher than thrust. anti-thrust. and rear side temperature. the fuel consumption in 70% coolant temperature is lower than 80% and 90% coolant temperature, the engine torque in 80%. 90℃ coolant temperature condition is about O.5kg.m higher than 70% coolant temperature.

우리나라 서양사교육의 변천과 배경에 대한 연구

권상선 新羅大學校 1996 論文集 Vol.41 No.1

It is the time that we have to consider national education suited to the needs of globalization age. Accordingly history education must be done in the view of world history, that is, the development of human history. I think it is absolutely needed to change 'history from the inside' in which we regard our own cultural tradition as something absolute into 'history from the outside' in which we try to understand other cultire. The main emphasis in our history education must not be put on the specialities in national history any more but on the history in general. In thais context, we can find the reason why the knowledge in European history is necessary and European history education must be intensified. Since academic development in European history is closely related with European history education, in this paper I will discuss the following problems deeply through positive literture : How does European history education in Korea have carried out until now and what are the problems? How does the world history education have changed in junior/senior high school? Does cultural history, one of liberal arts in university, have been instructive enough in its contents? and Does European history education in university have gone all length?

個人用 컴퓨터를 利用한 水力發電댐의 流入量 豫測

權五憲,李尙和 忠南大學校 産業技術硏究所 1986 산업기술연구논문집 Vol.1 No.2

The main purpose of the study is to develop a computer program in the personal computer which calculates numerically the inflow from the rainfall and displays the inflow hydrograph on a CRT. The computer programs, which were developed for the inflow forecasting of the short-range, employed the storage function method. The program which computes the inflow from the rainfall would be applicable effectively both to planning the daily/weekly power generation and to operating the dam for the flood control. The inflow calculated by the computer program gave a good agreement with the actual inflow for the Choon Chun and the Cheong Pyung dam.

菜種油의 水素添加反應에 關한 硏究(第一報) : 요오드價, 굴절율, 융점의 變化에 따른 Kinetics The Kinetic Studies by the Changes of Iodine Value, Refractive Index and Melting Point

權泰鳳,吳成基 경희대학교 부설 식량자원개발연구소 1983 硏究論文集 Vol.4 No.-

Edible rapeseed oil containing about 30% erucic acid was hydrogenated using nickel catalyst under 1 atm. and other various reaction conditions. Physicochemical change of the reaction products was examined by measuring iodine value, refractive index and melting point. Also, the kinetics was studied by measuring iodine value. The results obtained are as followed: It was found that the hydrogenation of rapeseed oil at 170℃ and 0.1% catalyst level was followed the first-order kinetics, and the rate constant was calculated to be 3.9×10^(-3) min^(-1). Iodine value was decreased with an increase of reaction temperature, time and catalyst concentration. Refractive index and melting point were increased with a decrease of iodine value. The correlation factor between refractive index and iodine value was RI = 0.00015 Ⅳ + 1.4512.

引張拘束 龜裂試驗에 依한 ABS EH32鋼 熔接部의 低溫龜裂 感受性

權海旭,金大憲,金星秀 영남대학교 공업기술연구소 1984 연구보고 Vol.12 No.1

Cracking of the welded zone of high strength steel is one of the most important factors of weldability and many kinds of test methods have been proposed to study that. In this study, cold cracking susceptibility of welded zone for high strength steel (ABS EH32 steel) with the shielded metal are welding was investigated by the tensile restraint cracking test. Effects of diffects of diffusible hydrogen contents on root cracking, lower critical stress, crack initiation and fracture method, hardness distribution of the welded zone and fractography were mainly investigated. The wet electrodes with higher diffusible hydrogen contents showed lower the critical lower stress level than the dried ones. Because of the hydrogen embrittlement, the heat affected zone by using the wet electrodes had higher hardness values than that by using the dried ones. Fracture surface of the heat affected zone with the wet electrodes showed mainly brittle fracture (intergranular and cleavage) and that of the weld metal also showed partially that due to the hydrogen embrittlement.

말초혈액에서 Tg mRNA에 대한 역전사 중합효소 연쇄 반응법의 갑상선 재발암의 분자생물학적 진단

권성일,박기룡,김현영,신채희,임영찬,최영식,박요한,이강대,장희경,이재화,염하용 대한내분비학회 2002 Endocrinology and metabolism Vol.17 No.4

연구배경: 갑상선암은 다른 조직에 발생한 암에 비해 비교적 천천히 자라므로 대부분 예후가 양호하지만, 일부에서는 주위 조직으로 침윤하거나 혹은 원격 전이로 인하여 치명적인 결과를 초래할 수 있다. 갑상선전절제술 및 131^I 제거술 후 경과 관찰시 갑상선암의 재발과 전이의 진단에 있어 131^I 스캔과 혈청 Tg의 측정이 현재 임상에서 가장 많이 이용되고 있으나 이 방법에는 여러 가지의 결점이 있다. 최근 Tg mRNA에 대한 RT-PCR법을 이용한 여러 연구결과는 131^I 스캔과 혈청 Tg 측정의 결점을 보완할 수 있는 좋은 보조적인 진단법으로 이용할 수 있을 가능성을 제시하였다. 이에 말초혈액에서 측정한 Tg mRNA에 대한 RT-PCR법이 갑상선 절제술 및 방사성요드 치료 후 갑상선암의 재발 및 전이 유무의 진단에 유용한가를 알아보고자 이 연구 시행하였다. 방법: 분화된 갑상선암으로 진단된 후 갑상선전절제술을 시행받고 방사성요드 치료를 받은 환자 중 현재까지 한차례에 이상 추적 방사성요드 전신 스캔을 시행하고 추적관찰이 가능했던 유두선암 35예, 여포선암 5예를 대상으로 연구를 시행하였다. 대상군은 131^I 스캔 소견상 음성인 군(Group Ⅰ), 잔여조직이 있는 군(Group Ⅱ), 국소전이가 있는 군(Group Ⅲ), 및 원격전이 군(Group Ⅳ)으로 구분하였다. 정상 대조군은 갑상선질환이 없는 10예의 건강인으로 하였다. 대상환자의 말초혈액을 이용한 Tg mRNA에 대해 특이적인 primer를 이용하여 RT-PCR 및 nested RT-PCR을 시행하였다. 결과: 본 연구 결과는 다음과 같다. 1) 131^I 스캔 소견상 음성인 군 21예 중 1예에서 Tg가 양성소견을 보였다. Anti Tg Ab가 양성인 4예 모두 Tg가 음성을 보였다. 잔여조직이 있거나 국소전이 및 원격전이를 보인 군 19예 중 Tg가 양성인 경우는 4예였으나, Tg mRNA는 전예에서 양성이었다. 2) 131^I 스캔에서 국소 및 원격전이 소견을 보인 8예 중 4예에서 Tg가 음성으로 131^I 스캔과 혈청 Tg 사이에 불일치 소견을 보였다. 3) 말초혈액에서 특이적인 primer를 이용하여 RT-PCR 및 nested RT-PCR을 시행한 결과 대상군 40예 및 정상 대조군 10예 모두에서 Tg mRNA가 양성을 보였다. 결론: 본 연구에서 갑상선 절제술 및 방사성요드 치료 후 갑상선암의 재발 및 전이 유무를 평가함에 있어 역전사 중합효소 연쇄 반응법을 이용한 Tg mRNA 측정의 의의는 재평가되어야 한다고 생각된다. Background: Differentiated thyroid cancer is the most common endocrine malignancy. Despite advances in the treatment of thyroid cancer, disease recurrence and metastasis may occur in as many as 20% of patients, and so continues to pose major problems in its clinical management. Serum thyroglobulin (Tg) measurements, by immunoassay, are used to detect residual or recurrent thyroid cancer following thyriod ablation. However, the usefulness of immunoassay is limited by both the requirement for thyroid hormone withdrawal, to attain optimal test sensitivity, and interference by the antithyroglobulin antibody (Anti-Tg Ab). Recent studies have reported the clinical usefulness of reverse transcription-polymerase chain reaction (RT-PCR) detection of Tg mRNA in the peripheral blood of patients with differentiated thyroid carcinomas. We performed this study to evaluated the usefulness RT-PCR of Tg mRNA in peripheral blood of patients with thyroid carcinoma following a total thyroidectomy and radioiodine ablation therapy. Methods: Forty cases that underwent a total thyroidectomy and radioiodine ablation therapy were included in this study. Of the 40 patients, 35 were papillary carcinomas and 5 were follicular carcinomas. Ten normal control subjects were also studied. Tg mRNA was extracted. Then RT-PCR and nested RT-PCR, were run with specific Tg primers. Concurrently, DNA sequencing of the isolates was carried out to prove the isolates were identical to the nucleotide sequence of the Tg. Results: The Tg was detected in 4 of 19 patients, with either a residual thyroid bed, or metastasis, on a 131^I whole body scan and in 1 of 21 patients with a negative radioiodine scan. Surprisingly, the Tg mRNA was detected in all the patients and normal controls. Conclusion: From our results we can not recommend Tg mRNA, detected by RT-PCR in peripheral blood, as a tumor marker superior to that of the Tg serum level. We consider an intensive re-evaluation of the method is required before considering its clinical applications (J Kor Soc Endocrinol 17:501∼513, 2002).

A. J. Toynbee의 生涯와 思想 : 主著인 「歷史의 硏究」를 中心으로

權相善 新羅大學校 1978 論文集 Vol.6 No.-

Arnold Joseph Toynbee (1889-1975), British historian and critic of civilization, devoted nearly 40 years of his life th the completion of his twelve-volume A Study of History. He was without doubt a unique scholar of civilization. In contrast to Spengler's german rationalistic approach to historical study Tyonbee employed British empiricism to distinguish twenty-one spheres of civilization, each of which leads toward a final universal state, having undergone four successive stages: Genesis, Growth, Breakdown and Integration. The fundamental principle of history, according to him, history, his subject of study was a universal history which is the history of all human societies in the world, including the less developed areas. This paper examines his thoughts and views on history with special reference to his massive work, a Study of History. The following contributions by him were noted: First, the unit in the study of history was expanded from the narrow concerns of a national state to the broad perspective in which a civilization sphere is viewed. Second, the pervasive modern historism of determination as characterized by Karl Marx severely attacked. Third, the history for living, not the history for the sake of knowledge, was emphasized in order to save modern civilization and the human race from destruction.