• 제목/요약/키워드: K-ARS

검색결과 353건 처리시간 0.036초

Metarhizium anisopliae ARS 978의 대량 배양을 위한 배지 조건 (Selection of optimum medium for mass production of Metarhizium anisopliae ARS 978)

  • 문기혁;윤정원;윤철식;김승욱
    • 농약과학회지
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    • 제2권2호
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    • pp.90-96
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    • 1998
  • 곤충 병원균을 미생물 살충제로서 이용하기 위한 대량배양 기술을 확립코자 미생물 살충제로 잠재성이 있는 Metarhizium anisopliae var. majus ARS 978의 대량배양을 위해 액체배양 조건을 확립하였다. 최적배양을 위한 온도와 pH는 각각 $28^{\circ}C$와 pH 7.0 이었다. M. anisopliae ARS 978의 균체량, 효소들의 활성 및 포자의 생성에 1.0 %(v/v) molasses, 1.0%(w/v) 주박, 0.3 %(w/v) $CaCO_{3}$가 가장 적합한 최적배지 조건이었다.

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Sliding Mode Control 및 Fuzzy Logic Control 방법을 이용한 AFS 및 ARS 제어기 설계 및 성능 평가 (Design and Evaluation of AFS and ARS Controllers with Sliding Mode Control and Fuzzy Logic Control Method)

  • 송정훈
    • 한국자동차공학회논문집
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    • 제21권2호
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    • pp.72-80
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    • 2013
  • This study is to develop and evaluate an AFS and an ARS controllers to enhance lateral stability of a vehicle. A sliding mode control (SMC) and a fuzzy logic control (FLC) methods are applied to calculate the desired additional steering angle of AFS equipped vehicle or desired rear steer angle of ARS equipped vehicle. To validate AFS and ARS systems, an eight degree of freedom, nonlinear vehicle model and an ABS controllers are also used. Several road conditions are used to test the performances. The results showed that the yaw rate of the AFS and the ARS vehicle followed the reference yaw rate very well within the adhesion limit. However, the AFS improves the lateral stability near the limit compared with the ARS. Because the SMC and the FLC show similar vehicle responses, performance discrimination is small. On split-${\mu}$ road, the AFS and the ARS vehicle had enhanced the lateral stability.

기동특성에 따른 ARS 자세 성능향상 기법 (The Improvement Method of ARS Attitude depeding on Dynamic Conditions)

  • 박찬주;이상정
    • 한국군사과학기술학회지
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    • 제11권6호
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    • pp.30-37
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    • 2008
  • The ARS(Attitude Reference System) calculates an attitude of a vehicle using inertial angular rate sensors and acceleration sensors. The attitude error of ARS increases due to the integration of angular rate sensor output. To reduce the attitude error an acceleration of sensor is used similar to leveling method of INS(Inertial Navigation System). When an acceleration of vehicle is increased, it is difficult to calculate the attitude error using acceleration sensor output. In this paper the estimation method of acceleration due to the attitude error only is proposed. Two methods of the attitude calculation depending on vehicle dynamics and the integration method of these two methods are proposed. To verify its performance the monte carlo simulation is performed and shows that it bounds attitude error of ARS to reasonable level.

ASYMMETRY OF MAGNETIC HELICITY FLUX IN EMERGING BIPOLAR ACTIVE REGIONS

  • Yang, Dan;Jiang, Yunchun;Yang, Jiayan;Bi, Yi;Yang, Bo
    • 천문학회지
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    • 제47권3호
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    • pp.105-113
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    • 2014
  • We apply differential affine velocity estimator (DAVE) to the Solar Dynamics Observatory (SDO)/Helioseismic and Magnetic Imager (HMI) 12-min line-of-sight magnetograms, and separately calculate the injected magnetic helicity for the leading and the following polarities of nine emerging bipolar active regions (ARs). Comparing magnetic helicity flux of the leading polarity with the following polarity, we find that six ARs studied in this paper have the following polarity that injected more magnetic helicity flux than that of the leading polarity. We also measure the mean area of each polarity in all the nine ARs, and find that the compact polarity tend to possess more magnetic helicity flux than the fragmented one. Our results confirm the previous studies on asymmetry of magnetic helicity that emerging bipolar ARs have a polarity preference in injecting magnetic helicity. Based on the changes of unsigned magnetic flux, we divide the emergence process into two evolutionary stages: (1) an increasing stage before the peak flux and (2) a constant or decreasing stage after the peak flux. Obvious changes on magnetic helicity flux can be seen during transition from one stage to another. Seven ARs have one or both polarity that changed the sign of magnetic helicity flux. Additionally, the prevailing polarity of the two ARs, which injects more magnetic helicity, changes form the following polarity to the leading one.

신경회로망을 이용한 ARS 장애음성의 식별에 관한 연구 (Classification of Pathological Voice from ARS using Neural Network)

  • 조철우;김광인;김대현;권순복;김기련;김용주;전계록;왕수건
    • 음성과학
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    • 제8권2호
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    • pp.61-71
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    • 2001
  • Speech material, which is collected from ARS(Automatic Response System), was analyzed and classified into disease and non-disease state. The material include 11 different kinds of diseases. Along with ARS speech, DAT(Digital Audio Tape) speech is collected in parallel to give the bench mark. To analyze speech material, analysis tools, which is developed local laboratory, are used to provide an improved and robust performance to the obtained parameters. To classify speech into disease and non-disease class, multi-layered neural network was used. Three different combinations of 3, 6, 12 parameters are tested to obtain the proper network size and to find the best performance. From the experiment, the classification rate of 92.5% was obtained.

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L-ARS를 이용한 Cl II div. 1 부정교합의 치험례 (TREATMENT OF CLASS II DIVISION 1 MALOCCLUSION WITH L-ARS(LIGATED ANTERIOR REPOSITIONING SPLINT))

  • 김종철
    • 대한치과교정학회지
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    • 제23권4호
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    • pp.447-454
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    • 1993
  • Patient with skeletal class II relationship was treated with L-ARS. L-ARS is fixed functional appliance that could be effective in children and adolescent patient who don't wear activator. The following results were obtained ; 1) Growth of Mandible was stimulated and overjet was decreased, therefore coupling of anterior teeth was established with L-ARS which is fixed functional appliance. 2) These changes were accomplished with Mandibular skeletal growth with no effect on the Maxilla. 3) L-ARS was especially effective on patient who deny to wear the removable functional appliance.

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ARS 서비스 운영전략 (The management strategy of the ARS service)

  • 황의철
    • 한국콘텐츠학회:학술대회논문집
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    • 한국콘텐츠학회 2011년도 춘계 종합학술대회 논문집
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    • pp.455-456
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    • 2011
  • 고객의 요구사항 다양화 및 콜서비스 요청의 지속적인 증가로 서비스 접점(MOT)의 중요성이 크게 확대되고 있으며, 이는 산업과 업종에 관계없이 모두가 동일한 현안사항을 가지고 있다. 콜량의 예측을 통해 적정인원을 산출하여 실제로 인입되는 콜량과 예측된 콜량을 트래킹하여 예측과 실제의 갭을 최소화하는 것으로 고객만족도 향상에 성패를 좌우한다. 양질의 상담 서비스 제공과 운영 사업비의 효율화는 우리 모두의 관심이자 동시에 해결해야 할 과제이다. 본 연구는 콜센터의 ARS 운영현황과 시장 동향 분석 및 ARS 운영기관 실태점검 및 평가를 통하여 효율적인 운영전략을 모색하고자 한다.

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Validation of Single Nucleotide Polymorphisms Associated with Carcass Traits in a Commercial Hanwoo Population

  • Sudrajad, Pita;Sharma, Aditi;Dang, Chang Gwon;Kim, Jong Joo;Kim, Kwan Suk;Lee, Jun Heon;Kim, Sidong;Lee, Seung Hwan
    • Asian-Australasian Journal of Animal Sciences
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    • 제29권11호
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    • pp.1541-1546
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    • 2016
  • Four carcass traits, namely carcass weight (CW), eye muscle area (EMA), back fat thickness (BF), and marbling score (MS), are the main price decision parameters used for purchasing Hanwoo beef. The development of DNA markers for these carcass traits for use in a beef management system could result in substantial profit for beef producers in Korea. The objective of this study was to validate the association of highly significant single nucleotide polymorphisms (SNPs) identified in a previous genome-wide association study (GWAS) with the four carcass traits in a commercial Hanwoo population. We genotyped 83 SNPs distributed across all 29 autosomes in 867 steers from a Korean Hanwoo feedlot. Six SNPs, namely ARS-BFGL-NGS-22774 (Chr4, Pos:4889229), ARS-BFGL-NGS-100046 (Chr6, Pos:61917424), ARS-BFGL-NGS-39006 (Chr27, Pos:38059196), ARS-BFGL-NGS-18790 (Chr10, Pos:26489109), ARS-BFGL-NGS-43879 (Chr9, Pos:39964297), and BTB-00775794 (Chr20, Pos:20476265), were found to be associated with CW, EMA, BF, and MS. The ARS-BFGL-NGS-22774, BTB-00775794, and ARS-BFGL-NGS-39006 markers accounted for 1.80%, 1.72%, and 1.35% (p<0.01), respectively, of the phenotypic variance in the commercial Hanwoo population. Many genes located in close proximity to the significant SNPs identified in this study were previously reported to have roles in carcass traits. The results of this study could be useful for marker-assisted selection programs.

Feeding Value of Ammoniated Rice Straw Supplemented with Rice Bran in Sheep: II. In Situ Rumen Degradation of Untreated and Ammonia Treated Rice Straw

  • Orden, E.A.;Yamaki, K.;Ichinohe, T.;Fujihara, T.
    • Asian-Australasian Journal of Animal Sciences
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    • 제13권7호
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    • pp.906-912
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    • 2000
  • The effect of ammonia treatment and rice bran supplementation on the in situ rumen degradation of rice straw was determined using three Japanese Corriedale wethers fitted with permanent rumen cannula. About 4 g samples of diets containing 100% untreated rice straw (URS); 100% ammonia treated rice straw (ARS); 65% URS+30% rice bran (RB)+5% soybean meal (SBM) (T1); and 85% ARS+15% RB (T2) were incubated at 0, 4, 8, 16, 24, 48, 72, and 96 hours in the rumen of sheep to measure dry matter (DM), crude protein (CP) and neutral detergent fiber (NDF) degradability. The DM disappearance of ARS based diets were about 20% higher than that of URS based diets. Rice bran supplementation improved DM disappearance of URS but not on ammoniated straw. Degradation parameters showed that ammoniation increased rate (c) of straw degradation resulting to higher DM and fiber degradability but RB supplementation did not. ARS gave similar DM and CP solubility and effective rumen degradability (ED) with that of the supplemented groups indicating that ammoniation alone can give the same effect on rumen degradability of sheep receiving low quality roughage. All degradation parameters for NDF were consistently higher in ARS based-diets indicating improved fiber solubility. Rice bran supplementation did not affect degradation characteristics of the diets except on soluble DM and CP fraction (A) of URS but not on ARS.

Cloning and Characterization of Autonomously Replicating Sequence(ARS) from Kluyveromyces fragilis

  • HONG, SOON-DUCK;JONG-GUK KIM;TAKUYA NAGAMATSU;JOO-HYUN NAM;DONG-SUN LEE;SANG-YONG LEE;SUN-HWA HA
    • Journal of Microbiology and Biotechnology
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    • 제3권1호
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    • pp.6-11
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    • 1993
  • An autonomously replicating sequence (Kf-ARS1) of Kluyveromyces fragilis was cloned from the genomic library which was constructed using pHN134 as a cloning vector to make a new host-vector system for the production of heterologous protein from K. fragilis as a host. The cloning vector pHN134 was composed of $Km^r, Ap^r$ and multiple cloning site in LacZ . A clone carrying Kf-ARS1 was isolated and the recombinant plasmid was designated as pIKD102. The cloned fragment was 2.3 kb (EcoRI/EcoRI) in length. Subcloning experiment showed that the region for ARS activity was 1.5 kb (SalI/EcoRI) fragment. It was shown that the Kf-ARS1 was active in Saccharomyces cerevisiae and Kluyveromyces fragilis.

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