• Korean Journal of Medicinal Crop Science
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• v.2 no.3
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• pp.219-226
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• 1994

Immature ovule of intergeneric $F_1$ hybrid between Platycodon grandiflorum x Codonopsis lanceolata for producing embryogenic callus. somatic embryos and plant regeneration were cultured in vitro on various medium as well as MT(Murashige Tucker)medium treated with different concentration of plant growth regulators. Embryogenic callus induction was highest in the treatment of NAA 0.5 $mg/{\ell}$ and zeatin 0.01 $mg/{\ell}$ added on MT medium, whereas it was lower in treatments with auxins alone. MT medium were more effective in production of somatic embryos from incubated embryogenic callus. Most favorable plant growgh regulator for producing somatic embryos was 2. 4-D 0.5 $mg/{\ell}$ and zeation. BAP 0.01$mg/{\ell}$, but hormone-free and auxins alone were less effective. NAA 0.01$mg/{\ell}$ added with zeation 0.5 $mg/{\ell}$ was effective as high as NAA 0.01 $mg/{\ell}$ alone in normal plant regeneration from somatic embryo.

• Korean Journal of Plant Resources
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• v.17 no.1
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• pp.1-6
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• 2004

Apical meristems tissue were cultured on LS medium with different zeatin and NAA concentrations to compare their potential to regenerate shoots, roots and bulblet formation. Shoot regeneration from apical meristem was effective on LS medium added with zeatin 0.1, 0.5, 1.0 mg/L alone treatment or zeatin 0.5 mg/L and NAA 1.0 mg/L combination treatment. A high frequency of root regeneration was obtained on LS medium supplemented with zeatin 0.5 mg/ and NAA 1.0 combination treatment. Linsmaier and Skoog(LS) medium with NAA 3.0 mg/L and zeatin 1.0 mg/L combination treatment gave the best results for normal bulblet formation#KW=Allium wakegi ; plant regeneration ; bulblet formation

• Korean Journal of Plant Tissue Culture
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• v.21 no.4
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• pp.247-252
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• 1994

The effects of explant sources, plant growth regulators on callus induction and plantlet differentiation from leaf blade, petiole, and meristem tissue of Pelalgonium citrosa were investigated under illumination or in dark condition Leaf blade explants cultured on Murashige and Skoog's medium containing 2,4-D and kinetin did not form callus or organ. But those cultured on medium with NAA and BA produced callcus and shoots. Dark condition was more effective than light condition to callus induction and showed that some of shoot were differentiated directly from leaf blade explane. Callus proliferated vigorously on meristem tissue after 7 days of culture, and multiple shoots were obtained Sum callus on medium with 0.5 mg/L NAA and BA. Roots formed readily from about 80% of the shoots cultured on medium with 1.0 mg/L NAA. Regenerated plantlets regenerated had phenotypically normal leaves and roots.

• Journal of Digital Convergence
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• v.13 no.12
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• pp.31-39
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• 2015

This paper examines trends of the income inequality index and the income quintile share ratios, using the Household Survey released by Statistics Korea. We discuss their respective effects on total income inequality and the income disparity, as a contribution concept defined in this paper for 1990-2014 periods. Main findings are as follows. First, the contribution of 2-person families to total inequality with the current income or the disposable income becomes bigger, and growth rates have been above 10% since 2003. Second, the contribution of 1-person families to income inequality is greater than that of 2-person families. Policy implication is such that the government had better investigate the 1 or 2 person families in-depth to set up the policy measures for weakening the income inequality.

• Korean Institute of Interior Design Journal
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• v.24 no.6
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• pp.163-170
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• 2015

우리나라 1인 가구는 대부분 다인가구로의 전환 이전에 잠시 거치는 거주형태로 인식되어 불안정한 상황이다. 그러나 오늘날 만혼, 비혼 등 결혼에 대한 인식 변화와 고령화 등의 영향으로 가족의 형태가 변화하고 있으며 이에 따라 거주형태도 다인가족 중심에서 1인 또는 2인 등 소단위로 분화되면서 다양해지고 있다. 하지만 다인 가구에 중심으로 형성된 기존의 주거시장에서는 이러한 급속도의 변화를 수용할 수 없어 여전히 소형 주거는 많은 불편함을 감수해야만 하는 열악한 실정이다. 본 연구는 현 사회현상에 주목하고 1인 가구를 위한 주거 계획 시 실내환경 측면에서 고려해야 할 사항들을 도출하는 것에 목적을 두었다. 선행연구들을 바탕으로 1인가구의 생활유형과 실내공간에서의 요구 사항들을 파악하기 위한 설문을 구성하였으며 실제 1인가구를 대상으로 설문조사 하였다. 결과, 현재 1인가구들이 거주하는 소형주거에서는 식사공간, 수납공간 등이 미비하여 공간 만족도가 매우 낮게 나타나는 등 무계획적 원룸형태 공급으로 인한 문제점을 확인 할 수 있었다. 따라서 단순히 숙식을 위한 물리적 공간 공급이 아니라 다양한 라이프스타일을 반영한 계획적 평면개발이 이루어져야 할 것이다. 또한 공간이라는 하드웨어와 1인 주거 간의 커뮤니티 활성화, 고령사회를 반영하여 다양한 연령대 1인 주거를 위한 사회화 프로그램 개발 등 소프트웨어 적 고려도 함께 이루어져야 할 것이다. 본 연구 결과는 물리적, 심리적 전환기에 있는 우리나라 주택시장의 새로운 요구에 대응할 수 있는 기초자료로 활용되어지길 기대한다.

• Korean Journal of Plant Tissue Culture
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• v.22 no.2
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• pp.83-87
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• 1995

Regulation of organ differentiation by growth regulators was investigated through the shoot-tip and bulb-scale cultures of Lilium longiflorum (cv Georgia). When shoot tips were placed on MS medium supplemented with 0.1 mg/L NAA alone or 0.1 mg/L NAA and 0.1 mg/L BA, axillary shoots were proliferated. Root diffentiation and growth were stimulated on the basal medium. Although growth regulation did not seem to be necessary when bulb scales were used as explants for shoot differentiation, its differentiation was promoted vigorously by 0.2 mg/L NAA, but suppressed by BA. Bulblets were formed from bulb-scale-derived plantlets cultured on MS medium supplemented with 0.1 mg/L IBA. And more bulblets were formed from the plantlet in MS medium supplying 0.2 mg/L NAA with 6% than3% sucrose

• Korea Real Estate Review
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• v.24 no.1
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• pp.27-37
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• 2014

Recently increasing the supply of housing policy has not been able to reflect social phenomena as like decreasing birth rate, aging of the population and increasing 1 or 2 person households. This study analyze the housing demand in the city with the point of population growth rate and economic character changes. Growing cities have positive population growth rate and economic character, but shrinking cities have the opposite. By comparing housing demand of growing cities and shrinking cities, we want to find out housing policy implications. In this study, results suggest that the peak age of housing demand of shrinking cities is the late 60's. But the growing cities's age peak is the mid-80's. But further analysis of the economic variables and 1 or 2 person old and young household dummies, the result is that the peak age of housing demand is reduced. These results suggest that housing demand should be differentiated the cities's population structure and economic characteristics of the household. In short, housing demand will vary depending on the condition of individual cities.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2009.11a
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• pp.146-150
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• 2009

Present family pattern of Korean society has been changed into nuclear family pattern based on the married couple from traditional expanded family pattern. As the entire social consciousness has been changed into private disposition, the number of independent household for 1 person has increases. Also, as the delivery age of first child became late according to the elongation of average period for the national education, the increment of average age for the first marriage and women's participation in the society, the family pattern of married couple lasts longer than used to be. Like this, considering the family formed period comprised from a household for 1 person to a household for 1married couple and senescence increase, as any response is inevitable for the requirement of residential space where 1~2 dwellers' life can be accepted economic and functionally within smaller scaled space, development and research on a plan system(flexible-typed plan) increasing the degree of freedom is required in developing plan of unit household. In the study for this, considering the change of population and social structure, I suggest the method in developing economic design responding to the differentiation, designing the change of support-system and infill-system based on the systemic comprehension about the residing environment in the family formation period and the research for main life pattern and residing environment in the family formation period in the present city life. I will set (family) composing system, develop basic and mixing typed standard model and establish the stage of applied development for the development of economic design.

• Journal of the Korean Geographical Society
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• v.32 no.2
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• pp.245-263
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• 1997

Housing market is segmented through 1) housing supply classified by housing characteristics and 2) housing demand classified by different housing opportunity of household. Moreover, neighborhood plays a role in intensifying housing market segmentation as a factor affecting on decision making relevant to housing supply and demand. while segmented housing markets have different mechanism, existing studies on residential differentiation and housing market have overlooked the characteristic differences among housing submarkets as the studies presume metropolitan housing market to be a single housing market. while the concept of 'residential differentiation' pays much attention on spatial pattern after the ecological approach appeared, the concept of ‘housing submarkets' is explanatory of the process of urban space structure formation. Analysis on housing submarkets makes up for the weak points of the behavioral approach inquiring into socio-economic constraint and different housing opportunity of household.

• The Journal of the Korea Contents Association
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• v.22 no.7
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• pp.253-263
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• 2022

This study examined the relationships between socio-demographic background variables, parent-child differentiation, marital stability, and psychological well-being in 382 eco-boomer married women (born in 1979-1992) whose mothers were born in 1955-1963. As a result, the higher the average monthly contact frequency with the mother, the greater the intimacy (connectivity) with the mother. The higher the number of years of marriage, the lower the marriage stability, the higher the education level, and the higher the average household income were related to the higher the self-acceptance. In addition, compared to women in single-income families, married women who receive help raising their children from their mothers did not form reliable relationships with others or show satisfaction compared to women who do not receive the assistance. Those who were well connected with their mother (or had high intimacy) had higher marriage stability, and those with higher marriage stability had higher psychological well-being. They also had better relationships with other people when married women had a higher level of parent-child differentiation.