• 한국식물병리학회지
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• 제14권4호
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• pp.325-330
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• 1998

On the basis of the fact that the pycnidiospore of Botryosphaeria dothidea, the causal fungus of apple white rot is a typical water borne spore, a method for quantitative analysis of pycnidiospore dispersal from the warts produced on the diseased apple tree stem was developed. The warts on which cracks developed either on or around them were cut off at the base, and shaked in the water for 4hours at 2$0^{\circ}C$, in which condition the maximum number of spores were released. The volume of shaking solution was calculated as 1 ml per one wart. At the end of shaking, Trio, a household detergent was added to the shaking solution to the concentration of 0.1%, and shaked for additional 10 minutes at 35$^{\circ}C$ to take off the spores attached on the glass ware. One milliliter of the spore suspension thus prepared were passed through transparent membrane filter (pore size : 3.0 ${\mu}{\textrm}{m}$), and the spores attached on the filter were counted under a microscope ($\times$200) after staining them with lactophenol supplemented with aniline blue. The results thus obtained were statistically consistent when at least 30 warts were used simultaneously in single shaking. This method can be applicable in the elucidation of ecology of sporulation and spore dispersal, and also in the screening of the sporulation inhibitor which can be used in the control of the disease by reducing the inoculum density.

• 소음진동
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• 제9권4호
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• pp.720-729
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• 1999

Coventional methods for reducing vibration in engineering designs (i.e. by stifferning or detuning) may be undesirable in conditions where size or weight must be minimized, or where complex vibration spectra exist. Some alloys with a combination of high damping capacity and good mechanical properties can provide attractive techanical and economical solutions to problems involving seismic, shock and vibration isolation. Although several non ferrous damping alloys have been developed, none of those materials are applied in any industrial factor due largely to high production cost. To meet these requirement, we have developed a new Fe-Mn high damping alloy. In previous studies, we have reported that an Fe-17%Mn alloy exhibits the highest damping capacity(Specific Damping Capacity:SDC, 30%) among Fe-Mn binary system, and proposed that the boundaries of various types such as $\varepsilon$-martensite variant boundaries, stacking faults in $\varepsilon$-martensite, stacking faults in austenitic and ${\gamma}$$\gamma /\varepsilon$ interfaces give rise to a high damping capacity. The Fe-17%Mn alloy also has advantages of good mechanical properties(T.S. 70 kg/nm$^2$ and low cost over other damping alloys(1/4 times the cost of non-ferrous damping alloy). Thus, the Fe-17%Mn high damping alloy can be widely applied to household appliances, automobiles, industrial facilities and power plant components. In this paper, the overall properties of the Fe-17%Mn high damping alloy is introduced, and its applicability to containment spray pump in the power plant is discussed.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제15권3호
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• pp.41-50
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• 2009

Studies about architectural planning for elderly residences have been carried out to examine various factors including the unit plan, site planning, and size planning. However, no studies have been undertaken that focus on the residents' daily life patterns. This study offers the design guidelines to support the daily life patterns of the elderly through the planning of elderly housing. For this study, elderly residents in Tokyo, Yokohama etc. in Japan were interviewed and surveyed. The results indicate that the changes to the daily life patterns of the residents living in elderly housing are the reduction of household, the increase of free time, and the change of social relationships. The elderly want to utilize their free time and focus on their social relationships. However, the elderly residences that we surveyed pay no consideration to social spaces and programs for their residents except for the cafeteria. To support the daily life patterns of the elderly, elderly housing should set a high value on the location, shared spaces, and unit plans of the residences in order to consider the personal diversity of the residents. Accessibility to public transportation systems and facilities should to be considered in the initial location planning. The revitalization of the public spaces should to be considered during the architectural planning stage. Considerations of personal taste during the unit planning stage are also necessary.

• 유기물자원화
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• 제11권3호
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• pp.60-66
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• 2003

본 연구는 혐기성 소화를 이용한 음식물쓰레기와 하수슬러지 병합처리를 위한 음식물쓰레기 전처리 공정 방안을 모색하기 위하여 수행되었다. 음식물쓰레기 전처리 공정에 따른 음식물쓰레기 단위 공정별 성상 변화와 산발효조 적정 투여 기초조사 및 음식물쓰레기와 하수슬러지 혼합비 특성변화를 통한 산발효조의 효율 향상방안을 검토하였다. 연구결과, 음식물쓰레기의 구성성분은 대부분이 곡류와 채소류로 산발효 공정에서 유기산으로 전환될 가능성이 충분한 것으로 판단되며, 산발효조 투입시 TS의 적정한 범위를 위한 음식물쓰레기와 희석수의 비율은 1:5가 적합한 것으로 나타났다. 음식물쓰레기 분쇄 후 입도 분포 특성을 고려할 때 약 8mm 이하의 입자가 적합하며, 음식물쓰레기와 하수슬러지 슬러지의 혼합비는 3:7 이하가 적합한 것으로 나타났다.

• The Journal of Asian Finance, Economics and Business
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• 제7권3호
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• pp.277-287
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• 2020

The study examines the impact of international integration on Vietnam's rural and urban income inequalities using the regression model. The data used for this study is based on the results of the Vietnam Household Living Standards survey from 2008 to 2016 of the General Statistics Office. These surveys conducted nationwide with a sample size of 46,995 households in 3,133 communes/wards which were representative at national, regional, urban, rural and provincial levels. The level of international economic integration used in the study is the proportion of import and export turnover of GDP, the proportion of FDI and GDP by province. Due to the heterogeneity and unobservableness of the single observant in the data set, we selected the models of random and fixed effects. The research results show that during the economic integration process, the Export/GDP factor is negatively related to income inequality. The remaining factors (GDP per capita, FDI/GDP, Educational level of households, Percentage of internet users, Aggregation of foreign cash inflow and GDP of the province) are all positively related to income inequality. The findings help assess the impact of international integration on rural-urban income inequality, but also provides a concrete basis to help policymakers address income inequality in the integration process.

• 한국디지털건축인테리어학회논문집
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• 제9권2호
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• pp.57-65
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• 2009

Housing Re-Development business is to improve the environment of old residential area and secure insufficient infrastructure facilities for the public, and to provide housing of fine quality for the individuals and it is taken as an opportunity for the individuals to be able to increase their property. However, it is true that the benefits from the redevelopment has not offered to the original dwellers who has lived there for a long time. This research studies the related systems of the Rental House Redevelopment Supply Service and is to present the schema to raise resettlement rate through the investment on the rate of tenants who chose the rental house and their specific characters. This study is to present the reform measures about the following 3 problems, on the basis of prior theoretical studies which deals with the common factors having low rate to move in the rental house of the tenants. (1) Physical side, the problem of supply structure, which is not appropriate Housing Supply Structure, (2) Psychological side, the problem of socially excluded rental house residents (3) Economical side, low re-settlement rate of tenants caused from the unreasonableness of the estimated rental value. This study presents that the compulsory rental housing supply rate should be changed to the gross area not from the number of households, and the supply of rental houses should correspond to the household size of tenants through prior demand survey. Secondly, it proposes the housing complex layout for intermixing to solve the social problems to allow a housing for sale and rental houses mixing in a building. And it proposes that the rental value should be calculated considering the neighboring value and in the long run, it should be calculated considering the tenants' income instead construction cost estimate. Also, it should be arranged to provide an opportunity to create income through resident welfare center improvement and provide self-sufficiency functions leading residents to participate in the residential area's repairing and maintenances.

• Human Ecology Research
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• 제52권5호
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• pp.457-471
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• 2014

Family instability has a negative effect on not only an individual household but also the society. The government continues to operate family support centers as a countermeasure to family instability issues. A healthy and multicultural family support center is considered an effective support system that extends from a family unit to the local community. In this study, the satisfaction and demand levels of each center, located in Seoul and Incheon, were examined with respect to items such as operation contents, physical space, and organizational structure. The results showed that various efforts for creating a family-friendly community were implemented in healthy family support centers and multicultural family support centers. It was found that the center organizers and operators focused more on software and programs than on the physical environment. There was mostly a shortage of physical and environmental space. This space shortage limited the planned and ongoing activities in terms of the residents' self-directed participation and space formation for a family-friendly educational culture. Therefore, it was necessary to set up the space-related criteria for each center in order to solve this environmental issue. We identified the baseline data of the criteria for a center's physical and spatial design and size. In particular, it was suggested that a more strategic physical and spatial design is needed to achieve an integral and effective operation for the connection of the family with the local society.

• Journal of Preventive Medicine and Public Health
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• 제41권4호
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• pp.232-240
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• 2008

Objectives: This study was conducted to assess the nutritional status and characteristics related to malnutrition in children less than five years of age in Nghean, Vietnam. Methods: In this study, which was conducted in November 2007, 650 child-mother pairs were selected using a two-stage cluster sampling methodology. A structured questionnaire was then administered to the mothers in their home settings. Anthropometric measurement was then used to determine if children were underweight (weight-for-age), wasting (weight-for-height) and stunting (height-for-age) based on reference data from the National Center for Health Statistics (NCHS)/World Health Organization (WHO). Logistic regression analysis was then used to describe the hierarchical relationships between potential risk factors and malnutrition. Results: The mean Z-scores for weight-for-age, height-for-age and weight-for-height were -1.46 (95% CI=-1.57, -1.35), -1.44 (95% CI=-1.56, -1.32) and -0.71 (95% CI=-0.82, -0.60), respectively. Of the children included in this study, 193 (31.8%) were underweight, 269 (44.3%) were stunting and 72 (11.9%) were wasting. Region of residence, the mother's level of education and occupation, household size, number of children in the family, weight at birth and duration of exclusive breastfeeding were found to be significantly related to malnutrition. Conclusions: The findings of this study indicate that malnutrition is still an important problem among children less than five years of age in Nghean, Vietnam. In addition, maternal, socio-economic and environment factors were found to be significant factors for malnutrition among children under five.

• 보건교육건강증진학회지
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• 제6권2호
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• pp.40-57
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• 1989

The purpose of this study is to find factors associated with the preventive health behavior in the daily lives of housewives of a region in Korea, with a hope that knowledge on the health behavior obtained from this study can be of use in promoting practice of good health behavior of the people. The data this study was collected from 672 persons, randomly selected among residents in Wonseong-Dong Chu-nean City and BuanGun, Junbug. Chisquare test, Pearson's C. C., and Stepwise multiple regression are major statistical methods used in this study. Major findings are as fellows: 1) Health behavior of the respondents was found to be related to their characteistics such as residence. age, educational attainments, and standard of living. However, no statistical significant relation has been found between respondent's health behavior and their characteistics such as size of household living together with children or not, yes or no elderly living together. and yes or no Sick family menber. 2) The preventive health behavior of respondents were found to be significantly related to their interests in their own health status. But the association between the practice of certain health behavior and their recognition of their own health status was statistically insignificant. 3) Practice rates of certain preventive health behavior were found different depending their general knowledge on health(P<0.05). 4) Respondents had significantly different preventive health behavior depending on their attitude on health(P＜0.001). 5) Degree of contact with mass-media had shown to be significantly associated with preventive health behavior(P＜0.001). 6) In the stepwise regression analysis on preventive health behavior. independant variables representing attitude and knowledge on health and contact of mass-media all together explained 20.4 ％ of the variance of dependent variable.

• 노동경제논집
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• 제41권3호
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• pp.1-59
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• 2018

근로장려세제는 저소득가구의 근로를 장려하고 실질소득을 지원하는 근로 연계형 소득지원제도이다. 따라서 노동시장의 밖에 있는 저소득가구를 얼마나 노동시장으로 유인했는지가 근로장려세제의 평가에 있어서 가장 핵심적인 질문이라고 할 수 있다. 본 논문은 2008년 시행 이후 여러 차례 세법개정에 따라 근로장려세제의 수급자격요건과 급여체계가 바뀌어 왔다는 점을 이용하여 근로장려세제의 노동공급 효과를 추정하고자 한다. 한국복지패널, 가계금융복지조사, 한국노동패널, 재정패널 자료를 이용하여 분석한 결과, 통계적으로 유의하면서 긍정적인 효과와 통계적으로 유의하지 않은 효과가 혼재되어 나타났다. 한편 2013년까지로 분석기간을 한정했을 때 긍정적 효과가 좀 더 크게 나타났는데, 사업소득자와 기초생활수급자의 수급자격을 인정한 이후에 효과성이 낮아진 것인가에 대해서는 후속연구가 필요하다.