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사과박 , 참깨박 및 계분 혼합비율이 볏짚 사일리지의 품질에 미치는 영향
류영우,고영두,이상무 ( Y . W . Ryu,Y . D . Ko,S . M . Lee ) 한국축산학회 1998 한국축산학회지 Vol.40 No.3
An experiment was conducted to determine the effects of mixing ratio of rice straw(R), apple pomace(A), sesame oil meal(S) and cage layer excreta(C) on feed quality of rice straw silage. Various mixing ratios of the ingedients into silage were used in this study. There were 3 RA silages with mixing ratios of R and A; RA1 of 50 and 50?g RA2 of 40 and 60%, RA3 of 30 and 70%, respectively. The RAS silages 1 through 9 contained R, A and S with mixing ratios of 50+50+10, 50+50+15, 50+50+20, 60+40+10, 60+40+15, 60+40+20, 70+ 30+10, 70+30+15 and 70+30+20, respectively. On the other hand, the RAC silages 1 through 9 consisted of R, A and C with the mixing ratios of 50+50+10, 50+50+20, 50+50+30, 60+40+10, 60+40+20, 60+40+ 30, 70+30+10, 70+30+20 and 70+30+30. The average crude protein and crude fat contents of RAS silage were higher than the other ones(P$lt;0.01). Especially, crude protein content of RAS silages 3 was the highest (14.26%). The crude protein and crude fat contents of RAS silages increased by the addition of sesame oil meal. Crude fiber content was the highest at RA silage 3 (30.14%), but RAC silage 9 was the lowest (20.99%). Crude ash content was the highest at RAC silage 9 (17.72%), but RA silage 1 was the lowest (5.68%). The average NDF, ADF and cellulose contents of RA silages were higher than those of RAS and RAC silages. the average hemicellulose content was the lowest at RAC silage(P$lt;0.01), but its ligin content was the highest. The average pH value of silage was high in the order of RAC $gt; RAS $gt; RA. Acetic acid was high in the order of RAS $gt; RA $gt; RAC. Propionic acid was not detected at RA and RAS silages, but was at the RAC silages. Especially, the 7 and 8 silages of RAS were higher than the others. Lactic acid was high in the order of RAC $gt; RA $gt; RAS. Especially, RAC silage 9 was the highest (6.318%), but RAS silage 4 was the lowest (0.357%).
선저고정형 소나의 탐지성능 향상을 위한 빔 안정화 빔형성 기법
류영우,Ryu, Young-Woo 한국군사과학기술학회 2008 한국군사과학기술학회지 Vol.11 No.3
Hull-Mounted Sonar(HMS) has been the main equipment to detect and track underwater threats like torpedoes and enemy submarines. The HMS has short warming-up time and is employable independently with sea-state and weather condition. But these bad environmental condition and ship maneuvering make ship's roll and pitch. Ship's roll and pitch make unstability of sensor position, then cause degradation of the HMS performance. In this paper, we will show how the unstability influences the HMS performance, propose the 'Beam Stabilization Beamforming Technique' to overcome these phenomenon. And present the effectiveness of proposed technique by comparing with conventional beamforming result.
류영우,예종이 한국교원대학교 학교체육연구소 2004 학교체육연구소지 Vol.11 No.1
This study aims at identifying the correlation between physique factors and physical fitness test items of primary school student, and supplying a basic data for setting up of scientific examination criteria of individual evaluation through the result ana
류영우,정의철,천승용,Ryu, Youngwoo,Jeong, Euicheol,Chun, Seung-yong 한국음향학회 2015 韓國音響學會誌 Vol.34 No.6
A triplet line array has a capability for solving left/right ambiguity problem and high directivity of line array. For this, high computational powers and correlation between nearby sensors must be considered. Hardware powers are dramatically increased, so various adaptive beamforming techniques and signal processing techniques can be adopted for large triplet line array. To investigate the optimum signal processing method and improve the target detection capability, we need to analyze the noise correlation among the triplet line array sensors in real environment. In this paper we analyze the experimental data in the East Sea, investigate noise correlation between three hydrophones in triplet sensors, among the triplet sensors and time varying properties. Based on the acquired results, it is possible to verify some information for beamforming and signal processing methods with considering the properties of the triplet line array. 삼중 선 배열은 좌/우 구분된 표적 방위 탐지와 선 배열의 높은 지향지수와 같은 장점을 지닌다. 그러나 이를 구현하기 위해서는 선 배열 대비 높은 연산능력과 센서 간의 좁은 간격으로 인한 높은 센서 간 상관관계를 고려하여야 한다. 연산능력은 급격한 하드웨어의 발달로 다양한 적응빔형성 기법 / 신호처리 기법을 적용하기에 문제가 없으나, 적용 가능한 최적의 신호처리 기법을 파악하고 표적 탐지 능력을 향상시키기 위해서는 수중에서 운용하는 삼중 선 배열로 수신되는 잡음 신호에 대한 센서 간 상관관계에 대한 분석이 필수적으로 수행되어야 한다. 본 논문에서는 동해에서 획득한 실험 데이터를 이용하여 삼중 선 배열을 구성하는 삼중 센서의 각 센서간 잡음 신호의 상관관계, 선형으로 나열된 삼중 센서 잡음 신호간 상관관계, 각 채널에서의 잡음 신호의 시변 특성 분석을 수행하였다. 도출된 결과를 바탕으로 삼중 선 배열의 특성을 고려한 빔형성 및 신호처리 기법에 필요한 정보를 확인하였다.
사과박 , 참깨박 및 계분 혼합 볏짚 Silage 급여가 한우의 육성율 , 채식행동 및 경제성에 미치는 영향
류영우,고영두,이상무 ( Y . W . Ryu,Y . D . Ko,S . M . Lee ) 한국축산학회 1998 한국축산학회지 Vol.40 No.3
This study was conducted to determine the effects of roughages types of R(rice straw), RAS silage[apple pomace 40% + rice straw 60% + sesame oil meal 15%(DM 15% addition of apple pomace + rice straw)] and RAC silage[apple pomace 40% + rice straw 60% + cage layer excreta 30%(DM 30% addition of apple pomace + rice straw)] on daily gain, eating behavior, economical efficiency and carcass characteristics of Korean Native Cattle. The results obtained were as follows: Body weight gain was high in the order of RAC silage $gt; RAS silage $gt; R treatment. Daily gain was the highest at RAC silage treatment as 1.36㎏, but R treatment was the lowest as 1.27㎏. Eating time, ruminating time and bolus number were high in the order of R $gt; RAS silage $gt; RAC silage treatment at 7 months(P$lt;0.05, 0.01), and chewing number was high in the order of R $gt; RAC silage $gt; RAS silage treatment(P$lt;0.05). Eating time, ruminating time, blows number, urinating number and excreting number were lower RAC silage treatment than R and RAS silage treatment at 11 months(P$lt;0.01). Eating time and ruminating time at 15 months were higher RAS silage and RAC silage treatment than R treatment(P$lt;0.01), but bolus number, chewing number urinating number and excreting number were not significantly affected by the treatments. Net income according to the treatments was high in the order of RAC silage(476,498 won) $gt; RAS silage(447,139 won) $gt; R treatment(304,332 won). As mentioned above the results, RAS and RAC silage feeding were highly evaluated about improvement of body weight gain, raughage cost and quantity grade for Korean native cattle.