• Journal of the Korean Society for information Management
• /
• v.40 no.1
• /
• pp.23-50
• /
• 2023

There are few opportunities for different generations to interact, and generational conflicts are emerging as a social problem as the number of people aged 65 and over is increasing. Efforts to solve the problem through interactions between the young and the old have been made in various fields, but reading-related intergenerational activities are rare. A qualitative study was conducted to provide constructive suggestions by hosting a book club for the young and the old, carrying out individual interviews, and analyzing them. Participants in this study agreed that there were few opportunities for intergenerational exchanges. However, they found that reading-based intergenerational activities were mutually beneficial in the intergenerational book club. The participants hoped the number of such occasions would increase. The study resulted in a few implications for intergenerational book clubs, which should help vitalize the book clubs and accentuate the benefits of social reading.

• The Korean Journal of Mycology
• /
• v.12 no.1
• /
• pp.1-8
• /
• 1984

The mycelial growth of some mushrooms was inhibited by benomyl treatment. The $ED_{50}$ of benomyl to that of Pleurotus spp., Agaricus bisporus and Flammulina velutipes was 25ppm, 50ppm and 200ppm, respectively, which indicates the former was the most sensitive to the fungicide. The mycelial growth of mushrooms growing on artificial media amended by benomyl was increased when they were cultured successively 5 times and 10 times on the media. The increasing rate of that of each mushroom was the highest at the concentration of $ED_{50}$ of benomyl. The mycelial growth of P. ostreatus was increased progressively as the number of successive culturing increased, while that of P. florida and A. bisporus was increased until they were cultured successively up to 5 times and 7 times, respectively, but they were decreased after that. Mutant sectors of mycelia were induced by successive treatment of benomyl. Mutant sectors of P. ostreatus appeared earlier than those of P. florida and all of them were induced earlier on the media of low contration of benomyl than on that of high concentration. The mycelia of mutant sectors induced by benomyl treatment grow faster than those of mother colony treated with benomyl successively, but there was no difference in resistance against the fungicide between them. The increase of mycelial growth of the mushrooms culturing successively on media containing benomyl indicated that they might obtain the resistance against benomyl.

• Korean journal of applied entomology
• /
• v.60 no.4
• /
• pp.431-448
• /
• 2021

We decided the efficient application timings of organo-synthetic insecticides for controlling the first generation larvae of O. furnacalis through investigations of insect stage-specific densities, damage aspects in maize, and effects of insecticides. A waxy maize cultivar, Ilmichal, was cultivated from April 20 (sowing) to July 26 (harvest, dough stage of maize) in Suwon, 2016. The maximum and 50% cumulative catch dates of the overwintering generation adults in the sex pheromone trapping were May 29 and May 31, respectively. Most of the first generation larvae finished their occurrence till the early reproductive stage of maize. The first generation larvae fed on leaves inside the whorl leaves before tassel and stem development of maize, sequentially moved to tassel and stem, and then moved finally to stem and ear parts. In the results of insecticide applications at different dates, the 9-11 leaf stage (June 10~17) and the 6-7 leaf stage (June 3) of maize were the most efficient application timings for direct spray of Etofenprox EC to maize, and for application of Carbofuran granules onto soil surface, respectively, which resulted in suppression of tunnelling damages. The timings for the two insecticides were 12-19 days and 5 days after the adult maximum catch date, respectively. Those timings after the 50% cumulative adult catch date were advanced 2 days.

• Korean journal of applied entomology
• /
• v.25 no.1 s.66
• /
• pp.1-9
• /
• 1986

Periodical samplings were made in the fields, located Hwasong-Gun, Banwal-Myon, Doondai-Ri, for two years to study the major factors responsible to the population of the overwintered pine needle gall midge, Thecodiplosis japonensis Uchida et Inouye. The population densities of the overwintered larvae reduced greatly at the time of pupation and the changing patterns seemed to be influenced by environmental conditions. The estimated 50% pupation day was about two weeks earlier for the 1980 generation compared with the 1979 generation, and much higher average and the daily maximum temperatures in 1981 affected on the development of the larvae. The relative emergence rates were 14.1% for 1979 and 14.9% for 1980 generation. The relative emergence rates(Y) were affected by the moisture contents of soil ($X_1$) and its variance $(X_2),\;Y=-68.41+4.3206X_1-0.6887X_2$. The relative emergence rates seemed to be decreased with the increased variance of the moisture contents of soil. Percents of needle gall were 49.63% for 1980 and 86.87% for 1981 generation.

• Korea Science and Art Forum
• /
• v.28
• /
• pp.105-116
• /
• 2017

This study is a basic research to suggest user-centered general hospital environmental design guidelines, which aims to analyze user's behavior characteristics across generation in general hospital. For this purpose, this study constructed an analysis tool through the literature review with regard to generation and behavior characteristics in general hospital. Besides, an online survey regarding user's behavior in general hospital was conducted targeting from 20s to 60s, 300 persons for each group, total 1,500 persons for about 3 weeks since September 1, 2016. The results of this study are as follows: (1) Based on the generation, there were significant differences in relevant categories of their visiting frequency, visiting purpose, visiting hour, transportation, companion, behavior during the wait and selection of a general hospital. (2) In all generation, they responded that they have visited once or twice per year. People in 20s and 30s responded that their visit for the hospital is to receive specific treatment, while other people in 40s, 50s and 60s visit the hospital majorly for routine check-ups. Therefore, it is imperative for a health check-up center to design an environmental plan that reflects the characteristics of elders in 40s, 50s and 60s. (3) People in 40s, 50s and 60s usually visit a general hospital in the mornings of weekdays, while generations in 20s and 30s responded that they mostly visit the hospital in the mornings of weekend. (4) When they visit a general hospital, people in their 20s are usually using public transportations, while people in their 30s to 60s are using their own vehicle. (5) People in their 20s majorly visited 'lobby'. In older generations, they tend to visit 'outpatient clinic'. Therefore, it is necessary to build an outpatient clinic environment that considers the elderly. (6) Patients majorly responded that they are using their cell phone, while waiting for their clinic call. In elder generations, they responded that they are more likely watching TVs, reading books/magazines or doing nothing. Therefore, it is essential to provide cell-phone related services and environmental supports. Visually attractive media can be utilized for this purpose.

• Korean Journal of Social Welfare
• /
• v.60 no.2
• /
• pp.53-76
• /
• 2008

This study analyze the intergenerational transmission of poverty in Korea, using the first wave of Korea Welfare Panel Study. For this analysis, I produced poverty transition tables across generation and estimated logistic models to explore the effects of parent's poverty on the children's adulthood poverty. As the results, I found that parent's poverty reduced children's education level and then the low education level increased the likelihood that children experience poverty in their adulthood. In other words, parent's poverty might increase children's adulthood poverty through the mediating effects of education level. This mediating effects were also identified in the analyses by group and cohort. From the analyses by group, daughters rather than sons, those from urban rather than rural area, and the older cohort rather than younger cohort showed greater intergenerational transmission of poverty.

• Defense and Technology
• /
• no.5 s.255
• /
• pp.18-25
• /
• 2000

T-50은 제 3세대 훈련기의 특징을 최대한 살려서 Total Traing System으로서의 가치를 높여야 한다. 즉, 항공기 뿐만 아니라 비행시뮬레이터를 비롯한 각종 지상비행훈련장비와 정비훈련장비 등으로 Total Traing System으로서의 시너지 효과를 높이는데 주력해야 할 것이다. 또한 KT-1과 조화롭게 연계된 비행훈련체계를 구축함으로써 세계 훈련기시장에서 제 3세대 훈련기의 선두주자로서의 인식과 함께 마케팅에도 상호보완효과를 유도해 낼 수 있을 것으로 예상된다. 이제 세계 훈련기 시장의 종주국으로 거듭나고 있는 한국의 항공산업은 때마침 구조조정에 의해 새로 탄생된 한국항공우주산업(주)의 출범과 맞물려 세계 항공업계의 주목을 받기 시작했다.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
• /
• 1999.11a
• /
• pp.47-51
• /
• 1999

차세대 석탄가스화복합발전(Integrated Gasification Combined Cycle; IGCC)으로써 고온정제(Hot Gas Clean-up; HGCU)는 고온고압의 석탄가스 중에 있는 불순물을 고온고압에서 제거하는 기술이다. 현재 이 기술에 대한 연구가 국내외적으로 활발히 이루어지고 있으며 특히 미국 에너지성에서는 2000년까지 플랜트 효율 45%의 건식 고온정제를 채용한 IGCC 시스템을 개발 중에 있으며 나아가 목표 효율 50% 이상으로 건식 고온 정제뿐 아니라 차세대 가스터빈을 채용한 시스템으로 2010년 개발을 목표로 하고 있다.(중략)

• Horticultural Science & Technology
• /
• v.19 no.3
• /
• pp.329-333
• /
• 2001

The study was performed to investigate the effect of a plug culture method in the early stage of a potato breeding program. The 105, 200 and 288-cell plug trays were used for raising potato seedlings. The % germination in plug trays ranged between 94 and 96%. Percent tuberization measured at 50 and 60, and 70 days after sowing was the greatest in 105-cell and 200-cell trays, respectively. However, tuberization was most delayed in 288-cell trays. Thus, it is considered that 105-cell tray is the most effective for the selection of early maturing plants. Plant maturity was determined by the morphological characteristics at the seedling stage of stolons cultured in plug trays. Most of seedlings with shorter stolons at seedling stage (1st generation) were the early-maturing, while most of seedlings with longer stolons were the late-maturing at the clonal stage (2nd generation). These results mean that the plant maturity in the early potato breeding program can be effectively grouped by observing the morphological characteristics of stolons after plug culture.

• Management & Information Systems Review
• /
• v.36 no.2
• /
• pp.21-35
• /
• 2017

The Korea Wave has been spread out all over the world since 1990s. Therefore, it can be seen that the Korea wave phenomenon is one of determinants of international tourism demand for Korea in addition to the macro factors such as population, GDP per capita, exchange rate, distance, etc. Existing studies have focused on analyzing the impacts of the Korea wave on the international tourism demand for Korea by using the aggregated data. However, the impacts of the Korea wave inducing tourism vary in different age groups. In this study, we conduct empirical analysis in order to explore how different the effects of Korea wave on the demand of foreign tourists visiting to Korea in different age groups are. The estimation results show that the Korea Wave influences most on international tourism demand for Korea in the age group of the under-20s. Noticeable is that the estimated effects of the Korea Wave on international tourism demand for Korea in the age group of the over-50s are higher than those in the 30s and 40s. This indicates that the parent generations visit Korea together with their young children who are most affected by the Korea Wave. Through this study, it is necessary to develop strategies for tourism marketing linked to children and parents, and to develop tourism products to increase the number of foreign visitors to Korea in the 30s and 40s.