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양영준,Yang Young-Joon 한국마린엔지니어링학회 2004 한국마린엔지니어링학회지 Vol.28 No.7
An idea to suppress the self-excited combustion oscillation was applied to the flames. The characteristics of unsteady combustion were examined and the unsteady combustion was driven by forced pulsating mixture supply that can modulate its amplitude and frequency. The self-excited combustion oscillation having weaker flow velocity fluctuation intensity than that of the forced pulsating supply can be suppressed by this method. The effects of the forced pulsation amplitude and frequency on controlling self-excited combustion oscillations were also investigated comparing with the steady mixture supply. The unsteady combustion used in this experiment plays an important role in controlling self-excited combustion oscillation. Symptoms of self-excited combustion oscillation were also studied in order to predict the onset of combustion oscillation before it proceeded to a catastrophic failure For the purpose, the unique measures to observe the onset of self-excited combustion oscillations based on the careful statistics of fluctuating properties in flames, such as pressure or emission of OH radicals, have been proposed.
양영준,박준수,박승근,권순홍,Yang, Young-Jun,Park, Jun-Soo,Park, Seung-Geun,Kwon, Sun-Hong 해양환경안전학회 2015 해양환경안전학회지 Vol.21 No.5
본 논문은 X-band 레이더 기반 파고추정 방법의 비교연구에 대한 내용으로, 신호 대 잡음비 및 음영비를 이용하였다. 신호대 잡음비의 경우 기존 파고 추정을 위한 방법으로 널리 사용되고 있으며, 음영비의 경우 새로이 제시되는 방법이다. 본 연구에 사용된 레이더 영상의 경우 울산 주전해안에서 계측된 자료이며, 기상청 등표에서 계측된 해양기상정보와 비교하였다. 자료는 약 34일동안 계측된 자료를 비교하였으며, 동해안 태풍 진출 기간 자료를 확보하여 다양한 파고분포에 대한 결과를 검증하였다. 분석 결과 음영비를 이용한 파고추정의 경우, 부이와의 보정이 필요 없는 장점과 실시간 파고 계측의 가능성을 확인하였으며, 일부 풍속, 타 물체 탐지 등 레이더 영상의 외적 요소에 의한 오차 발생의 요인을 파악하였다. This paper presents a comparative study of wave height estimation method that was used for signal to noise ratio and shadowing ratio based on X-band marine radar. If the signal to noise ratio, and is widely used as a method for estimating an wave height, a new method is presented for shadowing ratio. In the case of radar images used in this study it is measuring the data from the coast of Ulsan Jujeon, compared with marine meteorological information from the Meteorological Agency measured a light beacon. We compared the measured data for about 34 days, the typhoon was measured, incluidng a period in the East Sea, and verify the results for various distribution of wave height. For estimate wave height using a shadowing ratio analysis, it does not require calibration and real-time advantages of this part, coming confirmed the possibility of the measurement, the cause detection error for radar image was caused due to determine.
오피스 순영업소득(NOI)에 대한 고찰 -오피스 특성변수를 이용하여-
양영준 ( Young Jun Yang ),임병준 ( Byeong Jun Rhim ) 한국부동산분석학회 2014 不動産學硏究 Vol.20 No.1
This study is to find out the determinants of the net operating income from office building, which may be said to be the profit for a company, estimate the floor space which maximizes or minimizes the net operation income and also find out the effect of the type of ownership on the net operating income. The result of the regression analysis for net operating income for office showed that the income is dependent on the building area, number of story, age and location of the building. According to the corporate profit maximization theory, it was estimated that the net operating income for the office building would be the smallest when the gross area is 10,886㎡ while it is the largest with 44,606㎡. In addition, the type of ownership of office building was analyzed as the types of ownerships get diversified. It showed that the average net operating income earned by the investing organization is bigger than those earned by large companies. It is because the effective gross income for the investment organization is higher than for large corporations. This study has meanings as it handled both revenues and expenses of office buildings compared to the previous studies, derived the gross area which maximizes the net operating income and take into consideration type of ownership for the difference in net operating income. This study has its limitation as the precaution is required in applying the result to the study of offices located all around the nation. But, if the result is adopted for regional application, the difference of net operating income depending on the type of ownership would be more clear.
양영준(Yang Young-Joon),정은일(Zheng En-Ri),이상준(Lee Sang-Jun) 대한건축학회 2011 대한건축학회논문집 Vol.27 No.5
When an architect proceeds schematic design, his or her unconsciousness affect it enormously. The way that people feel and perceive their built environment reflects unconscious forms of psyche. So we can consider an exhited architecture as the results of the interfacial-mediating process from the unconscious realm of people including its architect. This abstract thing is converted to specific space by metaphorical mediation or to a masterpiece by metonym. The sprit of some places needs representation of certain architect’s feeling. Louis I. Kahn might, then, realize his instinct, so he melted it with the root he thought, geometric shape. For that reason, the ceiling of Yale art gallery became triangle. Above all, these creative mediating process intervene people perceive and present themselves and they reconcile with the whole world.
양영준(Young-Joon Yang) 한국기계가공학회 2013 한국기계가공학회지 Vol.12 No.3
This study was carried out to improve the design of fuel injection nozzle for marine medium speed diesel engine. For this purpose, fuel injection nozzle was modeled and simulated using CATIA V5R19 and FLUENT & MSC Nastran. Analyses of flow and heat transfer, respectively, were performed to find the optimal design of fuel injection nozzle. As the results, big pressure drop, which may lead to cavitation damage, was occurred at inlet of fuel injection hole with diameter 0.3mm. Furthermore, it was confirmed that the increase of mean temperature of fuel injection nozzle was almost a half in comparison with that of fuel injection nozzle tip.
양영준 ( Young Jun Yang ),임병준 ( Byeong Jun Rhim ) 한국부동산분석학회 2013 不動産學硏究 Vol.19 No.3
This study intends to analyze the determining factors of management expenses which are the deciding elements of earnings and, through all these, examine the economies of scale at which the management expenses would be at the lowest level. The management expenses were shown to be increasing; as the man power increased by 1 unit, the management expenses were found to increase by 12.990 units; and, as the number of elapsed years increased by 1 unit, the management expenses were found to increase by 0.423 units; and, as the number of electric capacity increased by 1unit, the management expenses were shown to increase by 71.017 units. Also the management expenses were analyzed to be decreasing up to 29,849㎡ and after 29,849㎡. This study has practical significance from the standpoint of, through the analysis of the determining factors of management expenses and estimates of the area sizes for optimal management expenses, potentially being utilized by future investors in predicting management expenses that accompany building ownership.