• Title/Summary/Keyword: 저항성 부하

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A New Medium-Maturing, "Gangbaek" with Resistance to Bacterial Blight (벼 중생 흰잎마름병 저항성 신품종 "강백")

  • Kim, Ki Young;Shin, Mun Sik;Kim, Woo Jae;Ko, Jong Cheol;Baek, Man Gee;Ha, Ki Yong;Kim, Bo Kyeong;Ko, Jae Kwon;Nam, Jeong Kwon;Noh, Gwang Il;Park, Hyun Su;Noh, Tae Hwan;Noh, Jae-Hwan;Cheong, Jin Il;Kim, Young Doo;Mo, Young Jun;Kim, Chung Kon
    • Korean Journal of Breeding Science
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    • v.40 no.4
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    • pp.443-446
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    • 2008
  • 'Gangbaek' is a japonica rice variety developed and registered by the rice breeding team of Department of Rice and Winter Cereal Crop, NICS, RDA in 2006. 'Gangbaek' was derived from a cross between 'Suweon345' with good grain quality and 'DV85' resistant to bacterial blight, $K_{3a}$. $F_1$ plants were grown in the greenhouse in winter of 1992/1993 and backcrossed with 'Suweon345' as the recurrent parent. Plants resistant to $K_{3a}$ race of bacterial blight (BB) were selected from $BC_1F_1$ to $BC_4F_1$ and used as parents in the backcrossing processes. This variety has about 120 days growth duration from transplanting to harvesting in west-southern coast and Honam plain of Korea. It is about 69 cm in culm length and tolerance to lodging. In reaction to biotic and abiotic stresses, it shows moderately resistance to blast, and resistance to bacterial blight pathogen, $K_1$, $K_2$, $K_3$ and $K_{3a}$, but susceptible to other major diseases and insect pests. The milled rice of 'Gangbaek' exhibits translucent, relatively clear non-glutinous endosperm and midium short grain. It has lower amylose content of 18.6% and protein content of 6.4% compared with 'Nampyeongbyeo'. The milled rice yield performance of this variety is about 5.28 MT/ha in local adaptability test for three years. This cultivar would be adaptable to the bacterial blight-prone area in the south-western coastal and Honam plain of Korea.

닭의 개량과 번식 (VI)

  • 정선부
    • KOREAN POULTRY JOURNAL
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    • v.14 s.158
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    • pp.41-45
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    • 1982
  • 질병에 대한 저항성 계통을 만들게 되면 많은 경비가 소요되지만, 영구적으로 질병으로 인한 폐사를 감소시킬 수 있어 효과적인 생존율 향상방법이 될 수 있다.

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정보시스템에 대한 사용자 저항 연구

  • 박경수;한호종
    • Proceedings of the Korea Society for Industrial Systems Conference
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    • 1997.11a
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    • pp.259-287
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    • 1997
  • 오늘날 기업들은 정보기술의 빠른 발전에도 불구하고 관련 비용의 감소 대신 오히려 증가를 경험하고 있으며, 수용과 사용보다 정보시스템 오용과 거부가 더 흔하게 발생한다는 파라독스에 직면하고 있다. 이 때문에 정보시스템의 평가를 위한 많은 성공척도들이 학계 및 실무에서 제안되어 왔다. 그러나 기존의 성공척도들은 사용자 내면의 부정적 심리를 정확히 반영하지 못한다는 문제점을 지니고 있다. 따라서 본 연구에서는 기존의 성공척도와 상호보완적으로 쓰일 수 있는 새로운 성공척도로서 사용자 저항이라는 개념을 제시한다. 본 연구는 사용자 저항의 개념을 제시하고 저항의 영향요인들을 검증하며, 사용자 만족도 및 시스템 사용도와의 관련성을 확인하는데 목적을 두었다. 실증분석 결과 사용자 저항은 적극적 저항과 소극적 저항이라 부를 수 있는 두 차원으로 구성되었으며, 지각된 복잡성, 지각된 위험성, 지각된 유용성, 컴퓨터에 대한 자기효력이 정보시스템에 대한 사용자의 저항에 영향을 미치는 요인으로 나타났다. 그리고 저항의 영향요인과 시스템 사용도 및 사용자 만족도의 영향요인들은 일부 다른 것으로 확인되었다.

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A Mid-late Maturing Rice Cultivar with High-Quality and Bacterial Blight Resistance "Jinbaek" (벼 중만생 고품질 흰잎마름병 신균계(K3a) 저항성 품종 "진백")

  • Kim, Ki-Young;Shin, Mun-Sik;Kim, Bo-Kyeong;Ko, Jae-Kwon;Noh, Tae-Hwan;Ha, Ki-Yong;Ko, Jong-Cheol;Kim, Woo-Jae;Nam, Jeong-Kwon;Baek, Man-Gee;Noh, Gwang-Il;Park, Hyun-Su;Baek, So-Hyeon;Shin, Woon-Chul;Mo, Young-Jun;Choung, Jin-Il;Kim, Young-Doo;Kang, Hyun-Jung;Kim, Chung-Kon;Hwang, Hung-Goo;Kim, Je-Kyu
    • Korean Journal of Breeding Science
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    • v.41 no.3
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    • pp.314-318
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    • 2009
  • A new rice cultivar "Jinbaek" carrying Xa3 and xa5 was derived from the cross between 'HR15204-38-3' with xa5 gene resistant to bacterial blight K1, K2, K3 and K3a, and F1 plant derived from the cross between Junam and Sindongjin with Xa3 gene. "Jinbaek" has approximately 125 days of growth duration from transplanting to harvesting in the west-southern coastal and Honam plain of Korea. Culm length of "Jinbaek" is 71 cm. In reaction to biotic stresses, it shows moderate resistance to blast, and wide spectrum resistance to bacterial blight pathogen, K1, K2, K3, and K3a but susceptible to rice stripe virus and blast. The milled rice of "Jinbaek" exhibits translucent, relatively clear non-glutinous endosperm and midium short grain. It has lower amylose content (18.8%) and protein content (6.2%) compared with Nampyeong. The milled rice yield of this cultivar was 5.30 MT/ha in local adaptability test of three years from 2006 to 2008. This cultivar would be adaptable to the bacterial blight-prone area in the south-western coast and Honam plain of Korea.

A New Rice Cultivar "Jogwang" with RSV Resistance and Short Growth Duration (벼줄무늬잎마름병 저항성 단기성 벼 신품종 "조광")

  • Lee, Jong-Hee;Kang, Jong-Rae;Park, Dong-Soo;Yeo, Un-Sang;Kwak, Do-Yeon;Shin, Mun-Sik;Song, You-Chun;Ha, Woon-Goo;Cho, Jun-Hyeon;Kim, Chun-Song;Jeon, Myeong-Gi;Lee, Gi-Yun;Yi, Gi-Hwan;Nam, Min-Hee;Ku, Yeon-Chung;Oh, Byeong-Geun;Kim, Myeong-Ki;Yang, Sae-Jun;Kim, Jae-Kyu
    • Korean Journal of Breeding Science
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    • v.41 no.2
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    • pp.163-167
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    • 2009
  • Jogwang is a new early maturing japonica rice developed in 2007 from a cross between Milyang187 and YR21113-B-B at the Department of Functional Crop Science, NICS, RDA. This cultivar is very suitable to the rice-cash crop double cropping system. Heading date of Jogwang is 2 days earlier than Keumobyeo under the late transplanting cultivation on July 10 at the Yeongnam plain. The tolerance level of this variety to leaf discoloration at seedling stage is very similar to Keumobyeo. It showed slightly lower viviparous germination and premature heading. This cultivar showed resistant reactions to leaf blast and rice stripe virus disease but susceptible to bacterial blight disease and major insect pests. The ratio of milling and head rice recovery of Jogwang is 76.5% and 64.5%, respectively. The milled kernels are translucent with non glutinous endosperm. This cultivar has 7.3% protein and 18.5% amylose content. In local adaptability test, showed that the milled rice yield of Jogwang is $4.90\;MT\;ha^{-1}$. This cultivar is suitable for planting in the plain paddy fields of Honam and Yeonnam regions in Korea.

Study on Characteristics of Leakage Current and Insulation Resistance for a Circuit According to Load Types (부하종류에 따른 회로의 누설전류 및 절연저항 특성 연구)

  • Han, Kyung-Chul;Choi, Yong-Sung
    • Journal of IKEEE
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    • v.23 no.2
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    • pp.364-369
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    • 2019
  • The ratios of compliant branch circuit of leakage current and insulation resistance were 68.4% and 90.8%, respectively at the lamp load, 64.6% and 96.5% at the heat load, 86.7% and 88.9% at the power load. Limit of residual current of the zero phase secondary current value at the zero phase primary current was 100 A when rated primary current 400 A more than. The reason why the ratio of branch circuit of the leakage current was less than the ratio of compliant branch circuit of the insulation resistance might be that the leakage current includes the capacitive leakage current and the zero phase current.

A New High Yielding Rice Variety with Multi-Disease Resistance, 'Keunseom' (중생 복합내병충성 초다수성 벼 '큰섬')

  • Ha, Un-Goo;Song, You-Chun;Yeo, Un-Sang;Cho, Jun-Hyeon;Lee, Jong-Hee;Lee, Ji-Yoon;Kwak, Do-Yeon;Chang, Jae-Ki;Hwang, Hung-Goo;Kim, Young-Doo;Cho, Young-Ho;Yang, Sae-Jun;Oh, Byeong-Gen;Shin, Mun-Sik;Ku, Yeon-Chung;Kim, Ho-Yeong
    • Korean Journal of Breeding Science
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    • v.43 no.6
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    • pp.576-580
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    • 2011
  • 'Keunseom', a new second generation Tongil-type rice variety (Oryza sativa L.), is a mid-maturing ecotype developed by the rice breeding team of Department of Functional Crop, NICS, RDA in 2006. This variety was originated from a cross between 'Dasanbyeo' and 'Namyeongbyeo' in 1996's summer season, which developed by pedigree breeding method. The pedigree of 'Keunseom' was YR18234-B-B-98-3-5-1, and it was designated 'Milyang202' in 2002. 'Keunseom' has tolerance to lodging, because it has short culm length as 77 cm. This variety is resistance to bacterial blight K1 race, rice stripe virus, rice dwarf virus, and leaf blast disease. Milled rice kernel of 'Keunseom' is a clean translucent with non-glutinous endosperm, and has good quality as it was clear in chalkness. The milled rice yield potential of 'Keunseom' was about 719 kg/10a at ordinary fertilizer level of local adaptability test. This cultivar would be adaptable to the mid and southern plain of Republic of Korea.

A Double Mediating Effect of Resistance and Job Stress between Acceptance and Flourishing in Organizational Change (변화수용성과 번영 간 관계에서 변화저항과 직무스트레스의 이중 매개효과)

  • Lee, Hyun-joo;Jung, Sung-cheol
    • Journal of Venture Innovation
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    • v.4 no.3
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    • pp.89-108
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    • 2021
  • This study purposed to investigate the double mediating effect of the resistance and the job stress between the acceptance and the flourishing in organizational change. The survey has executed on 300 employees. The acceptance of organizational change was positively related to the flourishing, negatively to the resistance of organizational change and the job stress. The resistance of organizational change was positively related to the job stress, negatively to the flourishing. The job stress was negatively related to the flourishing. The resistance of organizational change was meditating the acceptance to change and the job stress, and the acceptance to change and the flourishing. The job stress on the acceptance to change and the flourishing partially mediated as well as the resistance to change and the flourishing. The resistance to change and the job stress double meditated the acceptance to change and the flourishing. The implications, limitations of this study for future research were discussed.

A New High-Yielding Malting Barley Cultivar "Oreum" with High Yielding and BaYMV Resistance (호위축병저항성 다수성 맥주보리 "오름")

  • Hyun, Jong-Nae;Kim, Mi-Jung;Kim, Yang-Kil;Lee, Mi-Ja;Choi, Jae-Sung;Kim, Hyun-Tae;Han, Sang-Ik;Ko, Jong-Min;Lim, Sea-Gyu;Park, Jong-Chul;Kim, Jung-Gon;Suh, Sae-Jung;Kim, Dae-Ho;Kang, Sung-Ju;Kim, Sung-Taeg
    • Korean Journal of Breeding Science
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    • v.41 no.3
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    • pp.328-332
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    • 2009
  • A new malting barley variety, "Oreum", was developed from the a cross between 'Kinuyutaka' and 'Samdobori' at the Honam Agricultural Research Institute (HARI) in 2006. An elite line, YMB2077-2B-24-1-2, was selected in 2003 and designated as 'Milyang132'. It showed good agronomic performance in the regional adaptation yield trials (RYT) from 2004 to 2006, and was released with the name of "Oreum" having high yielding and BaYMV resistance. The average heading and maturing dates of "Oreum" were April 18 and May 24, which were 2 days later than 'Jinyang', a leading variety, at RYT. "Oreum" had longer culm length (75 cm), more spikes per $m^2$ (990), and lighter 1,000 grain weight (35.2 g) than those of 'Jinyang' in paddy field conditions. It was showed resistance to BaYMV at the regions of Naju, Jinju and Milyang but moderate resistance at Iksan. However, the response to other environmental stresses of was similar to 'Jinyang' The yield potential of "Oreum" was about 5.43 MT/ha, 4.93 MT/ha in upland and paddy fields which was about 80%, 35% higher than Jinyang in the regional adaptation yield trials (RYT), respectively. It has good malting quality including high grain assortment, germination capacity ratio, water sensitivity and high the malt production and the extract and short filtration speed than those of 'Jinyang'.

고속파 전자가열을 시도한 KSTAR 토카막 원형 플라즈마에서의 ICRF 고주파 부하 저항

  • Wang, Seon-Jeong;Kim, Seon-Ho;Gwak, Jong-Gu
    • Proceedings of the Korean Vacuum Society Conference
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    • 2010.02a
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    • pp.297-297
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    • 2010
  • KSTAR 토카막의 두번째 실험 캠페인 동안 고속파 전자가열 (FWEH)을 위한 ICRF 고주파입사 실험을 실시하였다. 토로이달 자기장은 2 T, 플라즈마 전류는 200-300 kA, 주반경은 1.8 m, 부반경은 0.5 m의 원형 플라즈마가 가열 대상이 되었으며, 네개의 ICRF 안테나 전류띠 가운데 중심부의 두개의 전류띠를 최대 300 kW로 구동하기 위한 운전 주파수는 44.2 MHz가 선택 되었다. 이 주파수는 플라즈마의 모든 영역에서 이온 사이클로트론 공명을 일으키지 않으므로 플라즈마에 흡수되는 대부분의 출력은 전자에게 전달될 것으로 기대되었다. 낮은 고주파-플라즈마 결합으로 인하여 전송선의 최대 고주파 전압이 허용치를 초과하기 때문에 비교적 낮은 최대 출력만이 허용 되었으나, ECE에 의해 관측된 전자의 온도는 국지적으로 최대 150 % 까지 증가하는 것을 확인 할 수 있었다. 낮은 고주파-플라즈마 결합의 첫번째 원인은 FWEH의 효율이 이온을 가열할 때 보다 상대적으로 낮기 때문이다. 플라즈마 내에 이온 사이클로트론 공명층이 형성되면 높은 효율로 고주파를 입사 할 수 있다는 것은 잘 알려진 사실이다. 또다른 원인은 D 형상의 플라즈마에 맞도록 만들어진 안테나와, 원형 플라즈마간의 부조화로 인하여 고속파 차단층이 (Fast Wave Cutt-off Layer) 평균적으로 넓게 형성되기 때문이다. 플라즈마 외곽에 반드시 존재하는 낮은 플라즈마 밀도의 고속파 차단층 내부에서, 중심부로 향하는 고주파의 진폭은 지수함수로 감쇠하므로 가능하면 플라즈마 밀도를 높여 차단층 자체의 폭을 줄이거나, 안테나 전류띠를 플라즈마에 바짝 접근시켜야만 한다. 고주파 진단 장치로는 송출기의 출력과 반사파 측정 장치, 공명루프의 전압 측정 장치가 있는데, 이것들을 이용하여 안테나에 전달되는 출력 및 고주파-플라즈마 결합 효율을 나타내는 플라즈마에 대한 고주파 부하 저항을 구할 수 있다. 측정 결과, 부하 저항의 최소값은 진공시 또는 ICRF만의 방전시의 값 0.25 Ohm 보다 큰 0.5 Ohm을 나타냈으며, 최대값은 플라즈마의 상태에 따라 1 Ohm에서 2 Ohm 사이에서 매우 빠르게 요동하는 것을 확인했다. Mm 파 반사계의 측정에 의하면 플라즈마 언저리의 위치가 약 3 cm 정도의 크기로 요동하는 것으로 나타났는데, 부하 저항과 언저리 위치의 파형이 정확하게 일치하지 않지만 유사한 경향성을 가진 것으로 보인다. 따라서 플라즈마 언저리 위치의 제어를 통하여 가열 효율을 높게 유지할 수 있음을 알 수 있다. 본 발표에서는 실험의 소개와 함께 부하 저항의 관점에서 가열 효율을 높일 방안을 토론하도록 한다.

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