• 한국초지조사료학회지
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• 제4권2호
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• pp.140-146
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• 1983

Sudangrass와 Sudangrass${\times}$Sorghun의 交雜種인 Pioneer 931과 Pioneer 988의 乾物生産量, 一般組成分 生産量, hemicellulose와 世胞內容物 生産量 그리고 乾物, 纖維素의 消化率 및 可消化에너지와 可消化蛋白質을 調査하였다. 1. 10a當 乾物生産量은 Sudangrass가 1,638kg으로 가장 많았고, Pioneer 988은 1,404kg, Pioneer 931은 1,282kg으로 적었다. Sudangrass와 Pioneer 988은 刈取次에 따른 影響이 比較的 僅小하였으나 Pioneer 931은 3次 刈取次에 産量의 11%로서 매우 적었다. 2. 纖維素는 消化率과 kg當 可塑化에너지값은 Pioneer 931, Pioneer 988 및 Sudangrass 順으로 낮아지는 傾向을 나타냈다. 그러나 10a當 可塑化에너지 生産量은 Sudangrass, Pioneer 988 및 Pioneer 931 順으로 各各 4,623, 4,170 및 3,970 Mcal였다. 3. 乾物의 in vitro 消化率은 草種間에 뚜렷한 傾向이 없었으나 可消化乾物 生産量은 Sudangrass, Pioneer 988 및 Pioneer 931에서 10a當 各各 1,068, 939 및 893kg의 順이었다.의 順이었다.

• 한국잡초학회지
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• 제18권4호
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• pp.333-340
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• 1998

Primisulfuron 또는 Imazethapyr와 Cytochrome P-450 저해제인 PBO의 혼합처리가 옥수수의 생장 및 ALS효소 활성에 미치는 영향을 조사한 결과는 다음과 같다. 1. Pioneer 3751 IR은 Primisulfuron과 Imazethapyr에 Imazethapyr에 높은 내성을 보인 반면, Pioneer 3751과 찰옥 2호는 감수성을 보였다. 2. Pioneer 3751 IR은 Primisulfuron과 PBO혼합처리에서 높은 저항성을 나타내어 PBO혼합처리에 따른 영향은 적었으나 Pioneer 3751,수원 118호와 찰옥 2호는 PBO혼합처리에 따라 생장 저해가 PBO무처리에 비해 높게 나타났다. 3. Pioneer 3751 IR의 생장은 Imazethapyr와 PBO 혼합처리에 따른 영향은 적었으며 Pioneer 3751과 수원 118호, 찰옥 2호는 생장저해가 심하였으나 PBO혼합처리 에 따른 약해 상승작용은 크지 않았다. 4. ALS효소 활성은 Prirnisulfuron은 $0.01{\mu}M$에서부터, 그리고 Imazethapyr는 $1{\mu}M$에서부터 Pioneer 3751 IR 품종을 제외한 3품종에서 현저하게 억제되었으며, Primisulfuron과 PBO혼합처리에 의하여 Pioneer 3751 IR과 Pioneer 3751에서는 활성저해가 더 크게 나타났고 수원 118호와 찰옥 2호에서는 차이가 없었으며, Imazethapyr와 PBO의 혼합처리에서는 4품종에서 모두 약간 억제되었다.

• 한국초지조사료학회지
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• 제7권3호
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• pp.140-145
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• 1987

In 1985 and 1986, silage productivity of 8 Korean improved and 7 US introduced corn hybrids and their resistance to rice black-streaked dwarf virus (RBSDV) were tested in the southern part of Korea where RBSDV is prevalent. The results obtained are summarized as followes: 1. Percentage of RBSDV diseased plantes differed depending on the year and hybrid. Suweon 19, Kwangok, Hoengseungok, Jecheonok, Pioneer 3424, Pioneer 3H001, NC6 13 1 were most susceptible, Pioneer 3 160 and Pioneer 3358 were moderately susceptible, and Nampyungok, Suweon 90, Pioneer XCF38, PB 2, and Jinjuok were least suceptible. No hybrid was completely resistant to RBSDV. 2. There were negative correlations between percentage of RBSDV diseased plants and culm length, percentage of ear bearing plants, ear yield, silage yield, or digestible dry matter, but percentage of RBSDV diseased plants was not correlated with stover yield. 3. Silage yield of Jinjuok, Pioneer 3160, Pioneer 3358, and Pioneer XCF38 were higher than that of other hybrids in both years. However, digestible dry matter of Nampyungok, Suweon 89, and Suweon 90 were higher than that of other hybrids due to a higher proportion of ear in 1986 when RBSDV infection was severer.

• 한국작물학회지
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• 제34권1호
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• pp.48-54
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• 1989

외국에서 도입한 32개의 서로 다른 Alfalfa 품종을 우리나라 기후풍토에서 재배하여 초장과 건물중 등의 생육상태를 비교 검사한 결과 가장 우수한 생육상태를 나타낸 품종들은 다음과 같다. 1. 초장생육이 우수하였던 상위 7개 품종들은 Diamond>Milkmaker> Arrow>Chalienger>Sapphire > Dekalb brand 135> LS-1920의 품종순이고 최하위 초장의 7개 품종을 하위순으로 열거하여 보면 Pioneer brand 5929> Maxidor> Dekalb brand 167> Pierce> Blazer> Raidor> Pioneer brand 532의 순이었다. 2. 건물중이 많은 상위 7개 품종은 Pike>LS-1920>Challenger>Salute>Diamond>Decathlon>Pioneer brand 581의 품종순이며 최하위 건물중의 7개 품종은 Maxidor>Pioneer brand 5929>Pioneer brand 532>Florida 77> Pierce> Magnum> Blazer의 순이었다. 3. 초장과 건물중의 결과를 비교하여 보면 대체로 초장에서 우수하였거나 열거하였던 품종들이 역시 건물중에서도 우세하거나 열거하여 서로가 비례하는 결과를 보였다. 4. 이상에서 조사한 바와 같이 가장 좋은 생육상태 및 수활량을 보인 품종들은 Pike, LS-1920, Challenger, Salute, Diamond 등이었으며 이들중 Challenger 품중을 제외한 나머지 품종들은 내한성이 중간정도인 Semi-dormant 계통으로 우리 나라 재배환경에 가장 적합할 것으로 생각된다.

• 산업융합연구
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• 제2권2호
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• pp.69-84
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• 2004

The purpose of this study is to investigate factors affecting the brand switch and repurchase of consumers. A model was created in this study. The model has the following three features. First, a brand was divided pioneer and follower brand. Customers' recognition for the difference between the pioneer and follower brand was examined. The new definition of the brands was set up: "The pioneer brand-The first setting up brand in the customers' recognition and the follower brand-all brands besides the pioneer one. Second, the two cases were assumed for the brand switching of customers: repurchasing of the pioneer brand, switching from pioneer to follower one. Lastly, a choice factor for brands of customers was composed of price, prototypicality. Based on the features, influencing factors depending on customers' choice for products generally was investigated.

• Corrosion Science and Technology
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• 제21권4호
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• pp.325-325
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• 2022

• 복식
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• 제65권8호
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• pp.22-34
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• 2015

This study was intended to investigate the influences of consumer's self-monitoring, pioneer brand awareness, types of endorsers on quality perception of "me-too" brands with a focus on outdoor brands. The design of this research was comprised of 2 types of self-monitoring(high vs. low), 2 types of pioneer brand awareness(high vs. low), 2 types of endorsers(professional expert vs. typical consumer). The study was carried out by using samples from residents of Seoul and Gyeonggi area. The number of subjects used in the final analysis totaled 243, with age of the consumers ranging grom 20's to 50's. The results of this study were as follows. Self-monitoring, pioneer brand awareness and types of endorsers had shown a statistically significant correlation effect on the quality perception of me-too brands. Especially, in the high-level self-monitoring group, the effect of pioneer brand awareness on quality perception of me-too brand was significant when typical consumer model was given. The result presents that using a professional expert model in the market rather than a typical consumer model can offset the quality perception of pioneer brand with low awareness.

• 한국잡초학회지
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• 제18권2호
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• pp.171-178
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• 1998

형질전환(形質轉換)된 ALS저해형(沮害型) 제초제(除草劑) 저항성품종(抵抗性品種) Pioneer 3751 IR과 감수성품종(感受性品種) Pioneer 3751, 국내(國內)에서 재배(栽培)되는 옥수수품종(品種) 수원 118호와 찰옥 2호를 대상으로 Primisulfuron과 Terbufos 혼합처리(混合處理)에 따른 옥수수의 �e해반응(藥害反應)과 ALS산소활성(酸素活性)의 차이를 검정하였다. Pioneer 3751 IR의 $GR_{50}$값은 살충제(殺蟲劑) 처리여부(處理與否)와 관계없이 160g ai/ha이상으로 높아 Pioneer 3751에 비하여 Primisulfuron에 저항성(抵抗性)을 나타냈으며 Pioneer 3751은 제초제(除草劑)를 처리(處理)하였을 때 $GR_{50}$값은 136.0g ai/ha었고 살충제(殺蟲劑)와 혼합처리(混合處理)하였을 때는 17.0g ai/ha으로 감소(減少)하였다. 수원 118호는 Primisulfuron 처리(處理)에서 $GR_{50}$값은 92.0g ai/ha이었고 살충제(殺蟲劑)와 혼합처리(混合處理)하였을 때에는 18.5g ai/ha로 감소(減少)되었다. 찰옥 2호는 Primisulfuron에 가장 민감하여 $GR_{50}$값은 29.0g ai/ha이었고 살충제(殺蟲劑)와의 혼합처리(混合處理)에서 14.5g ai/ha로 저하되어 국내품종(國內品種)은 살충제(殺蟲劑)와 제초제(除草劑)의 상호작용(相互作用)으로 약해(藥害)를 많이 받은 것으로 생각된다. Pioneer 3751 IR 품종(品種)의 ALS산소활성(酸素活性)의 $I_{50}$값은 살충제(殺蟲劑)의 처리여부(處理與否)와 관계없이 10.0${\mu}M$이상으로 가장 높았으며, Pioneer 3751은 Primisulfuron 처리(處理)에서 $I_{50}$값은 0.06${\mu}M$이 고 살충제(殺蟲劑)와 혼합처리(混合處理)하였을 때 0.04${\mu}M$로 減少되였다. 수원 118호와 찰옥 2호는 제초제(除草劑) 처리(處理)에서 $I_{50}$ 농도는 각각 7.75, 0.04${\mu}M$이었고 살충제(殺蟲劑)외의 혼합처리(混合處理)에서는 모두 0.01${\mu}M$로 낮아졌다. 따라서 옥수수에서 Primisulfuron에 대한 저항성(抵抗性)은 ALS산소활성(酸素活性)과 밀접한 관계가 있으며 Pioneer 3751 IR을 제외한 품종(品種)에서는 Terbufos 처리(處理)에 따라 약해(藥害)가 크게 유발되었고 ALS산소활성(酸素活性)이 저하되어 Primisulfuron에 대하여 감수성(感受性)을 나타냈다고 생각된다.

• 산업융합연구
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• 제4권2호
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• pp.39-55
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• 2006

Pioneer brand and follower brand show differences in their perception of the environmental uncertainty. Market pioneer brand companies think that the environment is relatively simple and doesn't change much, whereas follower bland companies think that the environment is complicated and changes a lot. For market pioneer brand companies, among dynamism on the environment lever, there was less potential for the environment and parts, and government restrictions compared to follower brand companies. Also the complexity of the environment level complicated compared to the follower brand companies in areas such as competition for consumers with rival companies, materials, resources of equipment and parts, government restrictions, and the amount of change of the market's preference of the product.

• Journal of Ecology and Environment
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• 제45권1호
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• pp.1-9
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• 2021

Background: Abandoned coal piles after the closure of mines have a potential negative influence on the environment, such as soil acidification and heavy metal contamination. Therefore, revegetation by efficient species is required. For this, we wanted to identify the role of Silene acaulis in the succession of coal piles as a pioneer and a nurse plant. S. acaulis is a well-studied cushion plant living in the Arctic and alpine environments in the northern hemisphere. It has a highly compact cushion-like form and hosts more plant species under its canopy by ameliorating stressful microhabitats. In this research, we surveyed vegetation cover on open plots and co-occurring species within S. acaulis cushions in coal piles with different slope aspects and a control site where no coal was found. The plant cover and the similarity of communities among sites were compared. Also, the interaction effects of S. acaulis were assessed by rarefaction curves. Results: S. acaulis was a dominant species with the highest cover (6.7%) on the coal piles and occurred with other well-known pioneer species. Plant communities on the coal piles were significantly different from the control site. We found that the pioneer species S. acaulis showed facilitation, neutral, and competition effect in the north-east facing slope, the south-east facing slope, and the flat ground, respectively. This result was consistent with the stress gradient hypothesis because the facilitation only occurred on the north-east facing slope, which was the most stressed condition, although all the interactions observed were not statistically significant. Conclusions: S. acaulis was a dominant pioneer plant in the succession of coal piles. The interaction effect of S. acaulis on other species depended on the slope and its direction on the coal piles. Overall, it plays an important role in the succession of coal piles in the High Arctic, Svalbard.