• 한국초지조사료학회지
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• 제10권1호
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• pp.48-54
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• 1990

In order to investigate effects of starch addition on the fermentative quality and dry matter digestibility (DMD) of Kudzu, Puerarie thunbergii Bentham plants were ensiled by the conventional method in small experimental plastic silo of 7.5 liter with different levels of starch addition. The fermentative quality, neutral detergent fiber (NDF), acid detergent fiber (ADF), and acid detergent lignin (ADL) of silage were determined by chemical analysis, and in vitro dry matter digestibility (DMD) by pepsin-cellulase technique. Total digestibile nutrients (TDN), digestible energy (DE) and metabolizable energy (ME) were calculated with DMD. The results obtained were as follows; 1. Acetate, butyrate, PH, NDF, ADF, and ADL of Kudzu silage were reduced with increasing of starch addition but the contents of lactate and total acid were increased. 2. The DMD was marked 47.5, 49.5, 51.2, 57.9 and 62.0 % under starch addition with a rate of 0, 2, 4, 6 and 8 %, respectively. 3. TDN, DF and ME were increased with high rate of starch addition. 4. The regression equation and correlation of Kudzu silage between level of starch (X) and DMD (Y) were Y= 41.6 + 1.86 X (I= 0.96, P < 0.01), of silage between Flieg's score (X) and DMD (Y) were Y= 41.6 + 0.23 X (I= 0.96, P < 0.01) and of silage between level of starch (X) and Flieg's score (Y) were Y= 21.3 + 7.97 X (I= 0.97, P < 0.01), respectively.

• 한국초지조사료학회지
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• 제8권3호
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• pp.128-134
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• 1988

This experiment was carried out to compare chemical composition of corn-cowpea intercropping and corn monocropping plants at different harvesting time and obtained the following results. 1. In both cropping systems, the contents of crude fat and nitrogen free extract (NFE) were significantly increased (P<0.01), while that of crude protein, crude fiber and crude ash were decreased (P<0.01) with each harvesting time. 2. The acid detergent fiber (ADF) and crude fiber contents were decreased same patterns in growing period, however, according to maturing of corn ears the difference between ADF and crude fiber contents reduced. 3. At mature stage, crude protein yields per 10a in corn monocropping and corn-cowpea intercropping system were 127.6kg and 152.lkg, respectively. The difference of crude protein content between corn-cowpea intercropping and corn monocropping system was 19.2%. 4. TDN yields of each cropping system, at mature stage, obtained similar results and TDN yields per 10a of corn monocropping and corn-cowpea intercropping system were 1006.lkg and 990.1, respectively. 5. Conseqently, corncowpea intercropping system could be increased protein yield without decreasing of dry matter yield in comparison with corn monocropping system.

• 한국초지조사료학회지
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• 제13권3호
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• pp.221-227
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• 1993

Browse from Quercus aliena Blume, Quercus mongolica Fisch.. Quercus serrata Thunb., Quercus acutissima Carruth., Quercus variabilies Blume, and Quercus dentata Thunb. were analyzed for crude protein (CP). crude fiber(CF). neutral detergent fiber(NDF). acid detergent fiber(ADF). cellulose. lignin, in vitro dry matter digestibility(DMD), and tannin acid equivalents(TAE). According to the chemical composition and DMD. the total digestible nutrients(TDN). digestible energy(DE), and metabolizable energy(ME) were estimated. Oak browse samples were collected from May through October from 1990 to 1992 in Mt. Kyeryong. Browse from Quercus aliena, Quercus acutissima, and Quercus serrata contained higher levels of CP, DMD. TDN, DE. and ME. but lower levels of CF, NDF. ADF, and TAE as compared with other oak browse. Differences among seasons and years in the concentration of CP. NDF, and organic matter digestibility(0MD) were significantly appeared in all oak browse(P<0.05). The order of preference ratings of oak browse were Quercus aliena ) Quercus acutissima ) Quercus serrata ) Quercus mongollca ) Quercus variabilies ) Quercus dentata. As the results of this study, it could be considered that Quercus aliena and Quercus acutisslma were more valuable browse source than others.

• 수산경영론집
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• 제48권1호
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• pp.51-71
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• 2017

We explore each of the three major domestic fishery product markets in South Korea- Frozen Squid, Frozen Hair tail and Dried Anchovy- to assess whether we can find evidence for Law of One Price (LOP) across the five major cities- Seoul, Dae-Jeon, Dae-Gu, Gwang-Ju and Busan. To achieve our aim, we utilize two different types of unit root tests: Augmented Dickey-Fuller (ADF) and Kwiatkowski-Phillips-Schmidt-Shin (KPSS) unit root test. In each of the three fishery product markets, we find evidence in support of LOP among several cities, which confirms that these markets are integrated to a certain extent. In particular, we find stronger evidence of LOP for Dried Anchovy market relative to the other two fishery product markets. Based on our findings, we argue that the Dried Anchovy market exhibits a greater degree of market integration across the five major cities in South Korea compared to the other two fishery product markets. The greater degree of market integration in the Dry Anchovy market is facilitated by its higher substitutability across cities; taken together these findings show that the market for Dried Anchovy in South Korea is more efficient than the markets for Frozen Squid and Frozen Hair tail.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2000년도 추계학술발표논문집 (하)
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• pp.1433-1436
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• 2000

클러스터링에 있어서 k-means[7], DBSCAN[2], CURE[4], ROCK[5], PAM[8], 같은 기존의 알고리즘은 원형이나 타원형 등의 어느 고정된 모양에 의해 클러스터를 결정한다. 만약 클러스터 하려는 데이터의 분포가 우연히 알고리즘의 결정된 모양과 일치하면 정확한 해를 얻을 수 있다. 하지만 자연적인 데이터의 분포에서는 발생하기 어렵다. 데이터의 형태를 추적하여 이러한 문제점을 해결한 CHAMELEON[1] 알고리즘이 최근에 발표되었다. 하지만 모양에는 독립적이나 데이터의 양이 증가함에 따라 소요되는 시간이 폭발적으로 증가한다. 이것은 기존의 마이닝 데이터들이 대용량이라는 것을 고려하면 현실에 적용하기 힘든 문제점이 있다. 이러한 문제점을 해결하기 위해 본 논문에서는 K-means[7]]를 이용한 대표를 선출하는 방법으로 CHAMELEON[1]의 문제점 개선(EF-CHAMELEON)을 시도하였으며 여러 자연적인 형태의 도형들은 아주 작은 원형들의 집합으로 구성 될 수 있다는 생각을 기본으로 잡음에 영향을 받지 않을 정도로 아주 작은 초기 다수의 소형 클러스터를 K-mean을 이용하여 구성하고 이를 다시 크러스터간의 상대적인 거리를 이용하여 다시 머지 하는 방법으로 모양에 의존적인 문제를 해결하며 비교사 학습(unsupervised learning)에 충실하기 위해 임계값을 적용 적정 단계에서 알고리즘을 멈추게 한 ADF 알고리즘을 소개한다. 실험 데이터는 기존의 여러 클러스터링 알고리즘이 판별 할 수 없었던 다양한 모양을 가지고있는 2차원 배열을 사용하여 ADF. CHAMELEON[1], EF-CHAMELEON,의 성능을 비교하였다.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2003년도 춘계 학술발표대회
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• pp.90-93
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• 2003

사초용 유채의 추파 재배에서는 경태, 주경엽수, 분지수, 분지엽수등의 수량 구성 형질과 생초수량은 휴폭 50cm $\times$ 주간 30cm의 점파구에서 가장 우수하였고 건물수량과 조 단백질함량, IVDMD, 가 소화 건물수량은 가장 밀식된 산파구에서 높았으며 NDF, ADF, Cellulose, Lignin등의 조섬유 함량은 식물체가 밀식된 상태에서 극히 세장한 관계로 가장 낮았다는 보고가 있었으나 (Ahn 등, 1989 ; Macforlane Smith 등, 1985) 우리나라 에서는 사초용 유채의 춘파 파종법(재식밀도)에 관한 시험연구는 아직 수행된바 없다. 따라서 본 시험에서는 사초용 유채의 재식밀도가 수량구성요소, 수량 그리고 영양가치에 미치는 영향을 구명하고자 Volox 품종을 공시하여 춘파 파종량 시험을 시험한 결과는 다음과 같다. 1. 초장을 제외한 경태, 주경엽수, 분지수, 분지엽수 등의 수량구성형질과 생초수량은 휴폭 50cm에 주간 30cm의 점파구에서 가장 우수하였다. 2. 건물수량과 조단백질 함량은 가장 밀식된 산파구에서 높았다. 3. IVDMD와 가소화 건물 수량은 산파구에서 가장 높았다. 4. NDF, ADF, Cellulose, Lignin 등의 조섬유 함량은 식물체가 밀식된 상태에서 극히 세장한 관계로 산파구에서 가장 낮았다.

• 한국초지조사료학회지
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• 제14권1호
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• pp.18-26
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• 1994

Forage quality evaluation with several grasses grown at a high altitude pasture situated at 1,000m above sea level was made to determine what is the feed value of these grasses and whether these grasses have any differences in forage quality compared with the grdsses grown at lowland pastures. In this experiment, Common, Venture, and Palaton reed canarygrass (Phahris arundinucea L.) and Climax timothy (Phleum pratense L.) were used and harvested at two different dates, 5 July and 30 September, 1989. Cmde protein (CP) concentrations in the grasses grown in September were higher than in July. Among the grasses grown, Palaton and Common reed canarygrass were highest in CP concentration in July and September, respectively. Acid detergent fiber (ADF) and neutral detergent fiber (NDF) concentrations in the grasses harvested in July were higher than in September. Palaton reed canruygrass was lowest in ADF and NDF concentrations at the both harvest dates. Relative feed value (RFV) in the grases harvested in July was ranged from 92 to 105 and that in September was from 110 to 117. Palation reed canarygrass had the highest RFV of 105 and 117 in July and September, respectively, therefore, the forage quality of this grass was ranked as Grade 2 based on the AFGC Hay Quality Standards. Overall forage quality of the grasses grown at a high altitude pasture seemed to be higher than the forage quality at lowland pastures. Based on the RFV assigned by the AFGC, forages with RFV 92 to 117 in this experiment could only work well in rations for low producing dairy cows.

• 한국초지조사료학회지
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• 제12권2호
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• pp.123-126
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• 1992

남부지방에 적합한 청예사초용 율무의 파종적기를 구명코자 다수성으로 인정된 승주 재래종을 공시하여 시험했던 바 그 결과를 요약하면 다음과 같다. 1. 초장, 경태, 엽수 등의 수량 구성형질은 4월 15일에 파종한 구가 가장 우수하였다. 2. 생초수량과 건물수량은 역시 4월 15일에 파종한 구가 증수되었다. 3. 조단백질 함량은 파종기가 늦어질수록 높았고 NDF, ADF 등의 조섬유 함량은 파종기가 늦어질수록 저하되었다.

• 한국전자파학회논문지
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• 제9권3호
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• pp.347-358
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• 1998

복잡하고 다양한 전파 환경을 라이시안 채널로 모델링할 수 있는 가능성에 대해서 검토해 보았다. 라이시안 채널에서의 수신 신호를 컴퓨터 시뮬레이터를 제작하여 모의 실험하였고, 모의 실험된 신호의 PDF(포락선 크기의 분포), PSD(Power Spectral Density), LCR(Level Crossing Rate), ADF(Average Duration of Fades), BER(Bit Error Rate)를 이론치와 비교한 결과 매우 잘 일치함을 확인할 수 있었다.

• 한국작물학회지
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• 제48권5호
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• pp.372-375
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• 2003

In order to examine the possibility that oil seed rape could be used as a forage fodder crop and to select the most suitable variety of forage rape at the southern area of Korea, two varieties of oil seed rape currently grown for oil production and six introduced varieties of forage rape with relatively high yield and high nutritional value were grown at the same condition and their nutritional value were observed. Generally, rape was considered as a useful forage fodder crop with high content of crude protein and low contents of NDF, ADF, hemicellulose, cellulose and lignin. Differences in mean values of the above characters between two groups of rape were not statistically significant. Velox showed significantly higher content of crude protein and significantly lower contents of NDF, ADF, hemicellulose, cellulose and lignin compared with other varieties of forage rape. Rape was relatively high in IVDMD compared with other forage fodder crops, and forage rape was more or less higher in IVDMD and DDMM than oil seed rape. Velox was the highest in IVDMD and DDMM among the varieties of forage rape in this experiment.