• Asian-Australasian Journal of Animal Sciences
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• 제8권6호
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• pp.567-570
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• 1995

Data from 178 Jersey calves born at Livestock Experiment Station were analyzed to obtain estimates of heritability, genetic and phenotypic correlations of some growth traits. Sex-specific variance and covariance components were estimated for birth weight (BWT), 180-d weight (WWT), 365-d weight (YWT), birth to weaning daily gain (BWG), weaning to yearling daily gain (WYG) and brith to yearling gain (BYG). Heritabilities, genetic and phenotypic correlations were generally higher in males than females. Heritabilities estimated for males and females respectively were 0.98 and 0.49 for BWT; 0.70 and 0.76 for WWT; 0.71 and 0.26 for YWT. Genetic correlations were higher than phenotypic correlations in all the treats studied.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 봄 학술발표회 논문집
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• pp.299-304
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• 2003

In this research, eight waterproofing membranes were selected from commercial market and the tensile adhesive characteristics of the waterproofing system (WPS) on concrete bridge deck were investigated in view of various factor in asphalt pavement. Tensile adhesive strength (TAS) test of different asphalt pavement types showed that TAS of WPS under SMA (Stone Mastic Asphalt) pavement was greater than that under dense asphalt pavement. Tensile adhesive strength (TAS) of sheet membranes was improved as the compaction temperature of asphalt concrete increase, but TAS of liquid membranes were not. TAS of sheet membranes after wheel tracking test were in the order of the sites under wheel path (UWP), before wheel tracking (BWT) and nearby wheel path (NWP), Since TAS of the same WPS of UWP was higher than TAS of BWT, wheel loading had function of pressing WPS resulting in higher adhesive strength, But liquid membranes were variable on types, The feature of detached interface after T AS test showed that sheet types were all detached in between deck concrete and WPS, and liquid types were detached in between asphalt pavement and WPS,

• 대한수의학회지
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• 제36권1호
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• pp.209-219
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• 1996

This study examined the effect of alcohol(AL) and/or paraquat(PQ) on serum TSH, thyroid hormones and enzyme activities, and the protective effect of selenium(SE) againse alcohol and/or paraquat-induced thyroid toxicity in guinea pigs. The experomental group consisted of control, 15% alcohol(AL), 4ppm sodium selentite(SE), 200ppm paraquat(PQ), AL+PQ, AL+SE, PQ+SE and AL+PQ+SE mixed in drinking water-fed guinea pigs for 4 weeks. The morphological changes of thyroid gland were studies on paraffin-embedded sections stained with H-E stain. Body weight losses, high serum concentration in TSH and cholesterol, and low values on triiodothyronine($T_3$), thyrozine($T_4$), free $T_4$ and alkaline phosophatase(ALP) were produced in the groups fed AL and/or PQ. We also noted that AL+PQ-fed group was marked increase in serum TSH. In AL or AL+PQ-fed groups when cpmpared to control group had increased the ratio of thyroid weight to body weight(ratio Twt/Bwt), whereas the ratio Twt/Bwt was decresed in SE or PQ-fed groups. However, the serum TSH, $T_3$,$T_4$ free $T_4$ and cholesterol values, and the ratio Twt/Bwt were reversed in groups given the combination of SE, compared with AL and/or Pq-fed groups, also ALP values were reversed in groups given the combination of SE, compared with AL or AL+PQ-fed groups. In microscope, morphological changes showed a remarkable between the AL or PQ-fed group and controls. In AL+PQ+SE-fed guinca pig, follicular colloid is high density in thyroid follicle and increased in connective tissue around the thyroid cells, and thyroidal epithelia were composed of cuboidal or columnar epithelium. The indicated that the morphological changes of thyroid were direct action in the thyroid cell. The results of this study confirmed that the toxic effect of AL or PQ on thyroid occur independently of changes in liver function, and that SE confers marked protection against AL or PQ-induced thyroid toxicity.

• 한국식품영양학회지
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• 제7권4호
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• pp.297-306
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• 1994

This experiment was carried out to investigate the healing loss and the heavy metal residues such as copper, zinc, manganese, cadmium and lead In porcine visceras by inductively coupled argon plasma spectrometer(ICP), and to probe changes when porcine visceras were boiling In water treatment(BWT), heating in autoclave treatment (HAT) and heating In oil treatment (HOT) . The range of heating loss on porcine viscera were BWT(23.11∼34.53%) , HAT(18.48∼28.00%) and HOT(14.20∼25.22%)and the heart tissue were higher and liver were lower than those of the other tissues. The total value of heavy metal residues in large intestine, small intestine, heart, kidney, liver and stomach tissue were 11.298${\pm}$5.302 ppm, 27.825${\pm}$8. 177 ppm, 16.756${\pm}$6.334 ppm 21.107${\pm}$6.057 ppm, 25.369 ${\pm}$ 10.164 ppm and 12.611 ${\pm}$5.513 ppm, respectively. Heavy metal residues in porcine visceras tended to decrease according to heating methods and the variety viscera, and the change of total heavy metal residues on BWT, HAT and HOT were 4.16∼32.57%, 12.01∼28.09% and 9.60∼25.76%, respectively. The decrease of lead element of mean value were 21.76% and copper, zinc, manganese and cadmium element were 18.00∼ 18.16%. The change of heavy metal residues were not significant in the porcine visceras(P>0.05), and the these were significantly correlated among the three heating method(P < 0.05).

• 한국산업정보학회논문지
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• 제5권1호
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• pp.102-107
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• 2000

일반적으로 문자와 영상이 갖는 특성이 서로 다르기 때문에 문자 압축 기법들을 영상 압축에 직접 사용하지 않는다. 최근 문자 압축에 뛰어난 결과를 얻을 수 있는 블록 정렬 알고리즘인 BW 변환이 소개되었으나 BW 변환을 직접 영상에 적용하면 만족할 만한 결과를 얻을 수가 없다. 따라서 BW 변환을 영상에 적용할 때 무손실 압축성능 개선을 위한 새로운 방법을 제안한다. 제안한 방법의 구성은 3단계로 나누어지며 SSKF 필터에 의한 10개 영역으로 계층적 대역 분할을 하고 BW 변환에 의한 블록 정렬 알고리즘을 수행하여 적응적 산술 부호화에 의한 중복성를 제거한다. 실험 결과 제안한 방법이 무손실 JPEG 표준안과 LZ계열의 PKZIP 보다 뛰어난 압축 성능을 가졌다.

• 한국환경과학회지
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• 제6권3호
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• pp.219-224
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• 1997

The cloging phenomenon in the fixed film reactor Is shown when biomass growth Is excessive for long operating time. In addition, effluent water Quality gets worse because of detachment of biomass. In this study, we conducted air-backwashing to sustain biomass In reactor to complement these defects. The results of experimental are showed In the following conclusion. The detachment rate was 19.5 - 38.0% when the organic loading rate was 0.40 - 1.32 kg COD/$m^3$/day, the k - backwashing Intensity was 2 L/min(6.7 $m^3$/$m^2$/hrl and the backwashing time was 15 - 19 seconds. And the detachment rate was 32.2 - 58.6 % when the organic loading rate was 1.37 - 2.27 kg COD/$m^2$/day, the backwashing time was 1 - 12 minutes. As orgnic loading rate and backwashing time ale Increased, detachment of fixed biomass Is Increased. The detachment equation with detachment rate(DR, %), backwashing time(BWT, min), fixed biomass concentration(FB. mg/L), and organic leading rate(OLR, kg COD/ms/day) through multiple linear regession was given by the following equation: DR : 17.964 $BWT^{0.1407} FB^{0.0597} OLR^{0.1946}$

• Journal of the Korean Data and Information Science Society
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• 제24권1호
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• pp.73-83
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• 2013

신용평가방법에서 등급의 계량화 중 신용등급 변화 검정방법은 등급별로 추정된 예측부도율과 실제부도율과의 동질성을 검정하는 방법으로 한 시점에 대한 이항검정과 카이제곱검정 등이 있고, 여러시점의 정확성을 검증하는 방법으로 정규성검정, 확장된 신호등검정 등이 있다. 본 연구에서는 현실적인 상황을 고려하여 이런 검정방법들이 상관관계가 존재하는 경우에 등급별 동질성 검정방법을 소개하고 이 방법들을 신용평가 이외에 다양한 분야의 자료에 활용할 수 있음을 알아본다.

• 한국인터넷방송통신학회논문지
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• 제14권6호
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• pp.139-147
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• 2014

선박 평형수는 해양 유기체와 함께 타 지역의 바다에 배출되며, 이는 해양 생태계 교란을 야기했다. 이 환경적 위험 요인을 제거하기 위하여 IMO에서는 모든 선박에 선박 평형수 처리 시스템(BWTS)의 장착을 의무화 하였다. 모니터링 시스템은 여러 해양에 흩어져 있는 선박으로부터 수집된 BWTS의 센서 정보를 분석함으로써 BWTS의 고장을 진단하고 예측한다. 본 논문은 위성 통신 비용을 고려한 BWTS 원격 모니터링 시스템의 통신 프레임웍에 대한 설계 및 구현을 제시한다. 본 연구에서는 랩뷰 프로그램에 의하여 안전하고 비용 절감을 위한 통신 모듈을 구현하였는데, 수집된 센서 정보는 RIO에서 수행되는 랩뷰 모듈을 통하여 암호화되고 압축되어 육지 통신 서버로 전송되며, 모니터링 가능하도록 복호화를 한다. 결과를 검증하기 위하여 수집된 센서 데이터를 모니터링 서버가 사용하기까지의 과정을 모니터링 하는 실험 모듈을 제작하였고, 모든 경위의 데이터 형식에 대하여 20번의 실험을 수행한 결과 기능성과 신뢰성에서 우수함을 증명하였다.

• Asian-Australasian Journal of Animal Sciences
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• 제18권5호
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• pp.620-625
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• 2005

Correlation of microsatellite heterozygosity with performance or heterosis was reported in wild animal populations and domestic animal populations, but the correlation with heterosis in a crossbreeding F$_1$ pig population remained uncertain. To explore this, we had random selected and mated Yorkshire${\times}$Meishan (F, n = 82) and their reciprocal (G, n = 47) to F$_1$, and used the two straightbreds as control groups (Yorkshire = 34, Meishan = 55), and observed the heterosis of birth weight (BWT), average daily gain (ADG) and feed and meat ratio (FMR). Two Kinds of measurement-individual heterozygosity (IH) and individual mean d$^2$ (lg value, ID) were used as index of heterozygosity and variance from 39 microsatellite marker loci to perform univariate regression analysis against heterosis. We detected significant correlation of IH with BWT in all of F$_1$ (F+G) and in F. We observed significant correlation of ID with ADG in all of F$_1$ (F+G), and with FMR in all of F$_1$ (F+G) and in F. There was significant maternal effect on heterosis, which was indicated by significant difference of means and distribution of heterosis between F and G. This difference was consistent with distributions of IH and ID, and with difference of means in F and G. From this study, it would be suggested that the two kinds of genetic index could be used to explore the genetic basis of heterosis in crossbreeding populations but could not determine which is better.

• Journal of Advanced Marine Engineering and Technology
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• 제34권6호
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• pp.880-886
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• 2010

본 논문에서는 에너지 절감형 선박평형수 처리장치 개발을 위한 저압 자외선 램프의 적용에 대하여 연구하였다. 중압 및 저압 자외선 램프의 방사 에너지 분포를 분석하여 램프의 최적배치방안에 대해 제안하였다. 실험결과에 기초하여 저압 자외선 램프로 구성되는 살균 챔버를 제작하였다. 챔버의 정격 전력은 216 [W], 처리용량은 10 [$m^3$/h]이며, 이는 기존 중압 자외선 램프 2 [kW] 2개로 처리되는 살균 챔버의 능력을 대처할 수 있다. 살균성능은 중압 자외선 램프에 비해 소비전력은 약 1/18이지만 미생물 94 [%], 동물성 플랑크톤 93 [%], 식물성 플랑크톤 94 [%]로 높게 나타났다. 따라서, 저압 자외선 램프의 적용으로 100 [$m^3$/h]이하의 소용량에서는 에너지절감형 선박평형수 처리시스템의 개발이 가능할 것으로 판단된다.