한국과 일본의 거시경제변수의 관련성 분석

최형원,김병구 啓明專門大學 産業開發硏究所 2000 啓明硏究論叢 Vol.18 No.1

본 연구는 일본의 거시경제변수들의 움직임이 한국경제에 미치는 파급경로와 영향력을 환율제도에 따라 분석하였다. 분석결과 첫째, 일본의 거시경제변수 중 한국의 경기변동을 민감하게 반영하는 산업생산지수에 통계적으로 유의한 영향을 주는 변수로는 전체 분석기간(1970. 1 - 99. 3)에서는 산업생산지수와 대미환율, 고정환율제도(1970. 1 - 79. 4) 실시기간에서는 대미환율과 공채수익률이었다. 그리고 변동환율제도(1980. 1 - 99. 3)하에서는 산업생산지수, 대미환율, 공채수익률이었다. 둘째, 이들 변수 중 한국의 산업생산 지수에 대한 영향력이 상대적으로 높은 변수로는 산업생산지수와 대미환율이었다. 한국의 산업생산지수와의 관련성 검토에서는 일본의 산업생산지수는 정(+)의 관계. 그리고 대미환율은 부(-)의 관계에 있는 것으로 분석되었다. This paper tests for correlation between Korea and Japan macro economic variables according to exchange system. As a result of analysis, first, we found that Japan macro economic variables has influences on Korean economy are industrial production index and Yen exchange rate to dollar from 1970. 1 to 1999. 3 and are Yen exchange rate to dollar and yields of government bonds for fixed exchange rate system from 1970 1 to 1979. 4 and are industrial production index Yen exchange rate to dollar and yields of government bonds for floating exchange rate system from 1980. 1 to 1999. 3 Second, we also found that industrial production index and Yen exchange rate to dollar of Japan had an very strong effect on Korea industrial index that reflects business cycle.

N₂, N₂-H₂O 및 N₂-CO₂분위기하에서 Si-Al계의 반응(I)

최원형,최태운 경성대학교 1983 부산수산대학 논문집 Vol.4 No.2

The pellets of the Si-Al system were heated at 1300℃ in the atmospheres of N₂, N₂-H₂O and N₂-CO₂systems, respectively. X-ray diffraction analysis showed that β´-Si₃N₄, α-Al₂O₃ were formed after the reaction at 1300℃ in each atmospheres. The porosities of the heated specimens were 5% below.

표고 폐골목으로 제조한 목질보드의 성질

최용순,황원중,한태형,김남훈,권진헌 江原大學校 森林科學硏究所 1998 Journal of Forest Science Vol.14 No.-

要約표고폐골목의 재활용을 목적으로 폐골목과 정상재의 칩을 일정비율로 혼합하여 얻은 목질보드의 성질을 조사, 검토하였다. 그 결과 폐골목의 목섬유는 정상재보다 다소 짧고 표 면이 거칠었으며 폐골목 변재부의 밀도는 정상재에 비해 상당히 낮았다. 파티클보드의 두께 팽윤율 및 파괴계수의 시험결과 폐골목을 25~50% 정도 혼합한 경우는 정상재와 비슷한 값 을 나타냈다.결론적으로 폐골목은 파티클보드의 재료로 사용될 수 있고 정상재와의 혼합비율은 25~50% 범위에서 조정되어야 할 것으로 생각되었다.ABSTRACTTo provide further information for reutilization of the bed-logs decayed by oak mushroomfLentinus edodes), the properties of wood-based board prepared with mixed materials of normal wood and bed-logs were examined.Wood fibers in bed-logs showed different morphology from normal wood fibers, that is, shorter length and rough surface. Thickness swelling increased with increasing mixing ratio of bed-log. On the other hand, modulus of rupture(MOR) in bending strength decreased. In products, the visual surface of board prepared from higher mixing rate of bed-log chips was smooth.Consquently, it is considered that the optimum mixing rate of bed-log to normal wood is the range of 25-50% and the bed-log can be used for raw material of board instead of normal wood.

인체 경추부의 유한요소 모델링

최형연,엄홍원 弘益大學校 科學技術硏究所 1998 科學技術硏究論文集 Vol.9 No.1

The cervical is located between the human head and torso and serves two important anatomical functions. It allows for mobility between the head and the lower body parts while protecting spinal code. The cervical spine is quite vulnerable to external impact during automobile collision. For example, a sudden forward/rearward bending motion of passenger head may cause severe nerve damage. Although such cervical spine damage caused by non-contact-type forces during automobile accident usually does not involve bony fracture, the resulting injury often entails long-term pain and discomfort. In general, finding causes for the cervical spine injury through clinical investigation is very difficult undertaking. There have been numerous experimental as well as analytical studies to date for elucidating relevant factors. In particular, various simulation methods such as finite element method have been utilized to look into injury mechanisms involved. The main advantage of the simulation techniques is that a wide variety of loads and injury causing conditions can be designed and applied as opposed to clinical tests in which inherent limits on test conditions exist. A finite element model of human cervical spine based on anatomical geometry and material properties of the important elements such as vertebrae, discs, ligaments, and muscles is developed. This model can be used for understanding and predicting potential cervical injury mechanisms as well as for designing protective devices.

貴金屬 Luster 開發에 關한 硏究

최원형 경성대학교 1982 부산수산대학 논문집 Vol.3 No.1

The present aim of work is to substitute a Korea make of Gold-luster for an imported talian article brand "HANOVIA" From a knowledge of the composition of an Italian Gold-luster by X-ray spectrometry, the preparation of Gold-luster similar to that was performed for the change in the composition of each component element, the selection of solvent, the effect of metal resinate addition, and the relations between a quantity of metal resinate addition and a firing Temperature. The result was that composition a synthesized Gold-luster with an Italian one showed comparatively satisfactory agreements. The point to be considered in the near future are an addition of rare elements and a drop in the firing point. It this is accomplished satisfactorily, the better result will be produced.

LDPC부호화를 적용한 영상통신시스템설계

최태식,공형윤,최원호 울산대학교 2001 공학연구논문집 Vol.32 No.1

다양한 멀티미디어 통신이 발달함에 따라 채널부호화를 사용하여 오류를 정정하는 기술이 발달되어 왔다. 본 논문에서는 압축영상의 전송에서 LDPC 부호화를 이용하여 영상통신채널에서의 오류를 복원하고, 영상을 재구성할 수 있는 영상통신시스템을 제안한다. 제안된 영상통신시스템은 패리티검사행렬을 사용하여 가장 많은 오류를 발생하는 열과 가장적은 오류를 발생하는 열을 교환하는 방식을 사용하였고, 가우시안 노이즈를 가지는 통신채널의 신호 대 잡음비는 0dB에서 4dB의 범위로 설정하였다. 패리티 검사 행렬이 작은 경우 제시한 교환 방식을 사용하였을 때 사용하지 않은 경우보다 BER 성능이 우수함을 확인하였으며, 영상을 재구성한 경우에도 PSNR 성능이 우수함을 확인할 수 있었다. As a various multimedia communication has been developed, the error correction technique using the coding method was improved. In this paper, an image communication system using the LDPC decoding method for restoring the error and reconstructing the image in the image compression transmission is proposed. The proposed system has a parity check matrix that can alternate the least occurring error column with the most occurring error column. The signal to noise ratio of a communication channel with the gaussian noise was determined the range between 0dB 4dB. When a parity check matrix was a small size, the system's BER efficiency with the parity check alternating method was better than the parity check without it. Also in reconstructing image, the proposed system's PSNR efficiency was superior to system without alternating method.

財政政策의 發展과 New Deal政策에 關한 考察

崔亨源 慶北專門大學 (영주경상전문대학) 1979 慶北專門大學 論文集 Vol.2 No.-

Fiscal Policy means all the economic policies through public finance under the modern capitalism and it can include all the economic policies practiced by government. In the industrial caitalism which has formed industrial capital by mercantilism, classical economists insisted on Cheap government which a nation looks on its economy. But every nation, which has been endured monopolistic capitalism and experienced the Great crisis of 1930's, has been taken High government that regulates the national economy as the positive fiscal policy, In my thesis, I investigated each chronical order of public finance policy which has been developed with the development of capitalism and divided the New Deal by president Roosevelt of United States of America into three: 1) relief spending policy 2) Pump-priming- policy 3) compensatory fiscal policy. And I studied these policies and problems and investigated fiscal policy of all the nations over the world based on the principles of supplementary fiscal policy in the postwar days.

O-Cresolsulfonphthalein 誘導체 混合物의 Complementary Tristimulus Colorimetry에 依한 同時定量

崔遠馨,金忠植 慶星大學校 1981 부산수산대학 논문집 Vol.2 No.1

Application of Complementary tristimulus colorimetry to the simultaneous quantitative analysis of cresolsulfon-phthalein derivatives. The simultaneous quantitative analysis by the spectrophotometry of C. T. S method of the mixture which contains o-cresolsulfon-phthalein derivatives B.C.S.P and C.S.P shows that it is possible only in the dilute acidic solution. In Particular, this method is not in need of the procese of the separation and isolation of substances from their mixture. So it has wide appfication to industrial use as well as organic synthesis. In the present experiment the relative error stays within 1.8%. This results shows satisfactory agreement with those obtained by a mathematical calculations.

7두의 개에서 배설성 요로조영술을 통한 신장 기능 평가

최윤정,이기자,최형준,이용진,박성준,송근호,정성목,최호정,이영원 忠南大學校 獸醫科大學 動物醫科學硏究所 2005 動物醫科學硏究誌 Vol.13 No.-

Excretory urography is a type of contrast study used to verify and localize upper urinary tract disease. It is an inexpensive and easy way to visualize of anatomic and functional status of the kidney and has been used as a primary imaging modality for the evaluation of urinary tract abnormalities. We describe urological signs of 7 dogs who examined with excretory urography and ultrasonography. Six cases were referred to veterinary medical teaching hospital. Chungnam national university (VMTH, CNU) to evaluate renal function after the treatment for renal failure and one case was referred showing hematuria. In case 1, 2 and 4, blood test and urinalysis was normal and the results of excretory urography presented that renal function were normal range. In case 3, the results of urinalysis, ultrasonography, and excretory urography except blood test presented abnormal kidney and hydronephrosis was diagnosed. In case 5 and 6, blood test, urinalysis, ultrasonography and excretory urography indicated renal failure. In case 7, blood test, urinalysis and ultrasonography presented partially abnormal signs, however, the results of excretory urography was normal range.

규칙 기반 전문가 시스템 도구 CLiPS를 이용한 프로세스 엔진의 구현

최상일,이형원 국립7개대학공동논문집간행위원회 2003 공업기술연구 Vol.3 No.-

Rule-based paradigm is one of the principal types of software process modeling and enaction approaches, as they provide formality and flexibility sufficient to handle complex processes. However, the systems adopting rule-based paradigms are generally hard to use and improve. In this paper, we describe the process engine of PSEE(Process-Centered Software Engineering Environment) PRAiSE implemented using a rule-based expert system tool CLiPS. Compared with existing researches, our process engine has remarkable merits as followings. First, extendability is achieved by the separation of the components of PRAiSE. Second, using CLiPS enables to execute process models efficiently and automatically, and incorporate the nature of software processes flexibly in which dynamic changes and parallelism are pervasive and prevalent. Third. instead of providing a rule-based textual process language directly in process modeling, facts are produced from graphical models automatically, and then executed according to the predefined process rules.