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      • 생태계 변화 모니터링과 IoT 융합기술 동향

        김내수,표철식,오충현,은식,Kim, N.S.,Pyo, C.S.,Oh, C.H.,Kim, E.S. 한국전자통신연구원 2013 전자통신동향분석 Vol.28 No.4

        21세기의 화두인 환경오염 및 기후변화에 따른 생태계 변화는 미래사회의 최대 위협으로써, 국제적뿐만 아니라 우리나라가 지속 가능한 사회로 발전하기 위해서는 생태계 변화에 대한 실시간 모니터링 및 이를 기반으로 한 예측 및 예보 시스템을 확보해야 하는데, 이를 위해 체계적이고 장기적인 대응 및 대책이 필요한 시점이다. 본고에서는 생태계 변화 모니터링을 위한 국내외 연구개발 동향과 차세대 실시간 생태계 관측 네트워크의 하나의 대안이 될 수 있는 IoT(Internet of Things)의 센서네트워크 기반 생태계 변화 모니터링 국내외 융합 기술 동향들을 살펴보고자 한다. 아울러, 향후 실시간 생태계 변화 모니터링을 위한 기술적 이슈 및 전망 등을 간략히 제시하고자 한다.

      • KCI우수등재

        농후사료 급여수준이 비거세 한우의 증체와 부위별 지방조직의 지방산 조성에 미치는 효과

        김내수,원유석,송만강,최양일,정정수,최성호,정재경 한국축산학회 1998 한국축산학회지 Vol.40 No.5

        The study was conducted with 63 Hanwoo bull calves of 193 days old for 19 months(up to 26 month of age) to examine the effect of feeding level of concentrate on the body weight gain, feed requirements and fatty acid composition of adipose tissues of various locations(subcutaneous, abdominal, kidney, intermuscular and intramuscular fats). The calves were allotted into 3 treatments according to the feeding level of concentrate(85, 100 and 115%), and fed concentrates of Grower(7∼10 month of age), Finisher I(11∼16 month of age), Finisher II (17∼20 month of age) and Finisher III(21∼26 month of age). The feeding levels of concentrates for the cattle of 85% and 115% were decreased or increased by 15%, respectively, up to 15 month of age based on the similar body weight to the cattle of 100%. The feeding levels of the concentrates for the cattle of 85% and 100% were continuously increased for the next 2 months, to make same levels as for the cattle of I15%, thereafter amount of concentrate were continuously increased based on the rate of body gain for all the cattle. The cattle were fed in a individual feeding system through the experimental period. The cattle were slaughtered at the ages of 6, 14, 18 and 24 month and adipose tissues were collected to analyze long chain fatty acids. Results observed from the study were summarized as follows Overall mean dry matter intake and body gain per day and feed requirements of Hanwoo bulls during the 19 months of feeding from 193 day old calves were 6.69㎏, 0.95㎏ and 7.06, respectively. Body gain of the Hanwoo bulls during experimental period was greatly affected by the feeding level of concentrate, but feed requirement was improved up to 20 month of age with the decreased feeding level of concentrate. Fatty acids of C_(16:0) C_(18:0) and C_(18:1) in the adipose tissues at various locations of Hanwoo bulls were dominated. The feeding level of concentrate did not affect the fatty acid composition except for C_(16:1) and C_(18:1) in subcutaneous fat, and C_(18:1) and C_(18:2) in intramuscular fat of the cattle that were fed at the level of 85% at the age of 14 month(P$lt;.05). No differences were observed in fatty acid composition of adipose tissues of each location for the cattle of 18 and 24 month of age among treatments. There were tendencies of greater C_(16:1) and C_(18:1) in subcutaneous and intramuscular fats while higher C_(18:0) in abdominal fat. There were also trends of greater unsaturated fatty acid compositions in subcutaneous and intramuscular fats and higher saturated fatty acids in abdominal, kidney and intermuscular fats. Percent C_(18:0) tended to be decreased while C_(16:1) C_(18:1) and C_(18:2) increased with the age of Hanwoo bulls.

      • KCI등재

        한우 거세 및 비거세우의 성장곡선 특성

        김내수,주종철,송만강,정정수,최양일,박철진 한국축산학회 2002 한국축산학회지 Vol.44 No.5

        Body weight-age data from 60 bulls and 60 steer of Hanwoo in the Korean Native Cattle Improvement Center was used to determine the growth curve parameters with Gompertz equation. Estimated growth curve functions were as follows;Bul l : Wt = 906.1·exp{-3.956·exp(-0.0034t)}Steer : Wt = 823.1·exp{-3.301·exp(-0.0027t} Mature weight estimated with Gompertz equation of bull is higher than earlier studies. And the major factor raising differences from the other is feeding level. Relative body weights of steer to bull were rapidly decreased to 79.2% until 19.5 months of age, and then increased slowly. The ratio was 90.8% at mature state. Body weight was under-estimated for bull at birth, but over-estimated for steer, and the body weight variations of bull were larger than the steer. 농협 한우 개량부에서 시험 사육한 거세우 및 비거세우 각각 60두의 자료를 근거로 곰페르츠 방정식에 의한 성장곡선을 추정한 결과 비거세우의 성장곡선 방정식은 Wt = 906.1·exp{-3.956·exp(-0.0034t)}이었으며, 거세우의 성장곡선 방정식은 Wt = 823.1·exp{-3.301·exp(-0.0027t}이었다. 이 추정식에 의한 성숙체중은 과거에 추정한 식보다 높게 추정되었는데 이는 사양조건의 차이에 의한 것으로 사료된다. 비거세우에 대한 거세우의 체중비는 19.5개월까지는 급격히 감소하여 79.2% 정도에 이르렀으나, 이후 격차는 서서히 줄어들어 성숙시에는 90.8%에 이르렀다. 추정식은 생시 체중이 거세우의 경우 과다하게 그리고 비거세우의 경우 과소하게 추정되었으며, 실제 체중의 변이는 비거세우가 거세우에 비해 큰 경향을 보였다.

      • KCI우수등재

        체계분석을 위한 한우의 생물학적 모형 개발

        김내수,주종철 한국축산학회 1996 한국축산학회지 Vol.38 No.4

        A deterministic Korean Beef Simulation Model(KOBSIM) was developed to simulate the effects of growth on biological and economical efficiency for system analysis of Hanwoo production. In the model, genotypes are specified as production potentials, which are reached if present plane of nutrition are adequate. Intake of feeds is simulated as a function of size and physiological status of the animal. The KOBSIM has been used to simulating Hanwoo production under different size of herds. Results of simulations of KOBSIM have coincided rather closely with actual production levels.

      • KCI우수등재

        한우의 최적 육종계획 수립에 관한 연구

        김내수,원유석,전광주,박노형,종복,박철진 한국동물자원과학회 2000 한국축산학회지 Vol.42 No.4

        The main problems should be overcame in current Hanwoo improvement system are improvement population size, the expense and length of time to select sire, etc. This study was conducted to find an optimum breeding scheme of Hanwoo(Korean cattle) by simulating 4 different breeding schemes considering the most genetic gains of major economic traits. The parameters used for the simulations were based on the current Hanwoo improvement system. Following 4 different breeding schemes were simulated; performance and progeny test by population size of 3,000 heads(current, Model 1), performance test only by population size of 3,000 heads(Model 2), performance and progeny test by population size of 100,000 heads in Hanwoo Improvement Base(HIB)(Model 3) and performance test only by population size of 100,000 heads in HIB(Model 4). The criteria of the optimum breeding scheme were based on the genetic gain for body weight at 18 mo.(BW18) as growth trait and marbling score(MS) as meat quality. Estimated annual genetic gains for BW18 and MS by Model 1∼4 were 3.39㎏and 0.032, 5.32㎏ and 0.075, 6.77㎏ and 0.058, 10.64㎏ and 0.092, respectively. Average economic efficiencies(BW18 and MS) for genetic gains of Model 2, 3 and 4 were 3.22, 1.75 and 3.08 times higher than Model 1, respectively. Thus, Model 4 which has a highest genetic gain and excellent economic efficiency was considered as the optimum breeding scheme for Hanwoo.

      • KCI우수등재

        홀스타인 젖소에 있어서 수정란 생산에 미치는 제요인 효과

        김내수,안병석,고문석,준식,손동수,일화,이광원 한국축산학회 1997 한국축산학회지 Vol.39 No.1

        The data set of 75 records of Holstein dairy cow donors bred in the National Livestock Research Institute from 1993 to 1995 was used to estimate effects of various factors on embryo recovery. The embryo recovery of superovulated tows was not affected by the factors such as sire of donor cow, breeding years, repeated superovulation and parity of donor cows. However, the production of total embryos and the first gale embryos were decreased significantly(p$lt;0.01) as the donor cows were tested to be higher in milk yield. Least square means of number of embryos according to breeding years and those by repeated superovulations were 9 to 16, 11 to 14 embryos, respectively. Total embryos as well as non-frozen embryos were tend to increase with donor's parity increase. Number of total collection of embryos decreased in opposition to the increase in the milk yield of the donor cow. It decreased by -2.2±0.8 embryo for total embryos, and by -1.1±0.4 embryo for first grade and by -0.5±0.4 for second Bade as milk yield increased by 1,000 ㎏.

      • KCI우수등재

        연령과 농후사료 급여수준이 비거세 한우의 지방합성과 지방세포 크기에 미치는 영향

        김내수,원유석,송만강,최양일,정정수,정재경,진걸 한국동물자원과학회 2000 한국축산학회지 Vol.42 No.4

        The current study was undertaken to determine the effects of age and feeding level of the concentrates on lipogenesis of adipose tissue and adipocyte size in the Hanwoo bulls. A total of 48 bulls was allocated into 3 feeding groups, 85% 100%, 115% of the requirement for Hanwoo cattle. Four animals per feeding level were killed at 15, 18, 24, 30 months of age for the measurement of lipogenesis and adipocyte size. Lipogenesis was measured with subcutaneous, intermuscular adipose tissue explants in culture by the amount of acetate or glucose converted into the total lipid and adipocyte diameters were measured with subcutaneous, intermuscular, and perirenal fat tissues at each slaughtering age. Initially, we measured the effect of insulin on lipogenesis of Hanwoo adipose tissue to establish an optimal condition for measuring lipogenesis. Insulin had no effect on lipogenesis. As the bulls get older, lipogenesis from acetate was reduced and similar trend was found for glucose. Lipogenesis from acetate of subcutaneous adipose tissue was higher than that of intermuscular adipose tissue. However, there was no significant difference in lipogenesis from glucose between the two adipose tissues. Adipocyte diameter was continuously increased from 15 to 30 months of age in the Hanwoo bulls. Adipocytes from perirenal adipose tissue were bigger than those from subcutaneous or intermuscular adipose tissues. Feeding level of concentrates did not affect either lipogenesis or adipocyte size.

      • KCI우수등재

        홀스타인 젖소의 공태기간에 대한 환경 효과 및 유전력 추정

        김내수,안병석,정하연,이현준,고문석,준식,경남 한국축산학회 1996 한국축산학회지 Vol.38 No.2

        The data set, 457 heads of Holstein cow bred in National Livestock Research Institute, was used to estimate the effects of environmental factors and heritability on days open. The effects of sire, parity, year, interactions of year and calving season, and 305 days mature equivalent milk yield(305MEM) were not showed significantly difference on days open. However, calving seasons were observed to be significant effects on days open(P$lt;0.05). Overall mean of days open was 167 days, and days open were showed a trend to become longer with an increase in parity. Calving seasons were arranged in order of days open as sprang, winter, summer and fall. As one kilogram of 305ME increased, days open were became longer by 0.007 days. Heritability for days open was estimated 0.17±0.13.

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