• 환경영향평가
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• 제23권2호
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• pp.101-111
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• 2014

The research was carried out in order to find climate factors which determine the distribution of Neolitsea sericea, and the potential habitats (PHs) under the current climate and three climate change scenario by using species distribution models (SDMs). Four climate factors; the minimum temperature of the coldest month (TMC), the warmth index (WI), summer precipitation (PRS), and winter precipition (PRW) : were used as independent variables for the model. Three general circulation models under A1B emission scenarios were used as future climate scenarios for the 2050s (2040~2069) and 2080s (2070~2099). Highly accurate SDMs were obtained for N. sericea. The model of distribution for N. sericea constructed by SDMs showed that minimum temperature of the coldest month (TMC) is a major climate factor in determining the distribution of N. sericea. The area above the $-4.4^{\circ}C$ of TMC revealed high occurrence probability of the N. sericea. Future PHs for N. sericea were projected to increase respectively by 4 times, 6.4 times of current PHs under 2050s and 2080s. It is expected that the potential of N. sericea habitats is expanded gradually. N. sericea is applicable as indicator species for monitoring in the Korean Peninsula. N. sericea is necessary to be monitored of potential habitats.

• 한국패류학회지
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• 제30권3호
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• pp.189-196
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• 2014

A significant production decrease has been witnessed for the Pacific oysters, Crassostrea gigas farmed in the western coastal waters of Korea, presumably by the loss of physiological viability. We evaluated the viability in terms of health indicators, the condition indices and hemocyte apoptosis rates of the oysters inhabiting two representative farming sites, Incheon and Taean each with different environmental variables. In our monthly measurements for the whole year 2013, the indicators were location specific. The condition indices of Incheon were highly variable, 1.67-8.58%, while those of Taean were less, 2.28-5.57%. The condition indices decreased during the spawning seasons, July and September in common. The two oysters exhibited also differed in the apoptotic activities of hemocyte, highly active, 4.03-30.15% for Incheon oysters and less active, 2.87-17.48% for Taean oysters. One thing we could identify was the two measurements were adverse during the critical seasons of spawning, reminiscent of being a useful tool for a health indicator for the oysters. Similar trend was also observed in the time when change in temperature was extreme. The findings in this study are highly indicative of health indicators for the oyster aquaculture.

• 한국대기환경학회지
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• 제29권1호
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• pp.38-55
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• 2013

This study has been performed to select several indicators of long-range transport process that can be applied to the Northeast Asia. We first classified high air pollution days into long-range transport (LRT) dominant cases and the local emission dominant (LED) cases based on the synoptic meteorological variables including vorticity and geostrophic wind speed/direction at a geopotential level of 850 hPa. LRT cases were further categorized into two types: LRT-I type with air mass pathways from northern China and/or Mongolia, and LRT-II type from central and southern China. In each categorized case, we examined the difference of both measured aerosol optical properties of AERONET at two sites in western Korea, and the simulated characteristics of LRT process by MM5-CMAQ model. We contrasted LRT case with LED case, and then generated the LRT indicators applicable to Northeast Asia. The results showed that fine and coarse modes of LRT-II were relatively smaller than LED and LRT-I cases, respectively. Aerosol size distribution showed significantly higher concentration of fine-mode particle (mainly smoke or urban aerosols) in LED case in comparison with that of LRT groups (LRT-I, II), suggesting the amplitudes fine modes of LRT relative to LED as a possible LRT indicator. From the results of MM5-CMAQ modeling, we concluded that the conversion ratios for sulfur ($F_s$) were the most effective indicators of LRT cases, and the ratio of VOC to NOx and NOx to CO were found to be the second most effective indicators of LED case.

• 한국비블리아학회지
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• 제27권2호
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• pp.193-212
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• 2016

이 연구의 목적은 도서관이용과 도서관예산 사이에 영향관계가 있는지를 알아보고, 이를 통해 잠재적 이용자들을 도서관으로 유인하기 위해서는 적정예산의 확보가 필요하다는 것을 설명하는데 있다. 다시 말해, 도서관예산은 도서관이용을 증진시킬 수 있는 중요한 요인임을 설명하기 위해 시도되었다. 이를 위해 부산광역시 공공도서관 31개관을 대상으로 국가도서관통계시스템으로부터 확보된 2013년 통계데이터를 사용하여 분석을 실시하였다. 분석을 위해 독립변수는 도서관예산을 설명하는 '총비용지수(TFI: Total Funding Indicator) = $\sqrt{인건비{\times}자료구입비}$'와 도서관이용을 나타내는 'LU(Library Usage) = (연간 방문자수) + (연간 대출자료수) / 봉사대상인구'의 개념을 통해 산출된 값을 종속변수로 사용하였다. 연구결과는 도서관총비용지수(TFI)와 도서관이용(LU) 사이에는 영향관계가 존재하는 것으로 나타났으며, 도서관의 예산이 증가할수록 도서관이용은 증가하는 것으로 설명되었다. 본 연구의 결과가 비록 도서관예산과 도서관이용의 긍정적인 관계를 설명하고 있지만, 분석대상 및 분석기간의 제한성 및 한정성으로 인해 정책결정을 위한 도구로서 활용되기 위해서는 대상의 확대 및 분석기간의 다년화를 통한 타당성이 확보되어야 한다.

• 한국주거학회논문집
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• 제20권4호
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• pp.69-78
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• 2009

The purpose of this study is to identify which is the better indicator to forcast housing tenureship between permanent income and current income, and study the effects of non-human capital asset on housing tenureship. To forcast permanent income, a statistic regression equation is used with current income as the dependent variable. Multi-nomial logistic model is used to forcast the housing tenureship Using current income as the dependent variable delivered a more accurate result than using permanent income. Current income is used as a dependent variable and sex, age, education and occupation are used as independent variables to forcast permanent income. Non-human capital asset is also used as an independent variable. Also, excluding non-human capital asset variable when forcasting bothe permanent income and housing tenureship proved to be more accurate. Because permanent income, the sum of future income and current asset, is a good indicator of current consumption including housing, the result with permanent income should be more accurate than the forcast using current income. This implies an underdevelopment of a housing mortgage system that enables people to consume now on the basis of their future income. The Korea's unique Chonsei housing rental system has also made it difficult to forcast housing tenureship based on people's permanent income and asset. While, the Key-money of Chonsei housing and the housing asset of homeowners with debt are very similar in their amount, the result is completely different. One is a renter and the other is a homeowner.

• 감성과학
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• 제9권4호
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• pp.307-319
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• 2006

본 연구에서는 정서능력과 뇌반구 기능이 문제행동에 미치는 영향을 밝히는 것이 주된 목적이었다. 남자 중학생 1,050명을 연구의 대상으로 하여 정서능력척도검사(Trait Meta-Mood Scale), 뇌 정보처리 특성 검사(Brain Preference Indicator Test), 그리고 공격성과 비행은 한국판 아동자기보고 검사(Korea Youth Self Report-Child Behavior Check List)를 사용하여 조사 연구하였다 연구 대상은 초기청소년기에 해당하는 남녀 중학생 1,479명을 표집하였다. 연구결과 문제행동을 많이 가진 집단은 보통 아동들에 비해 정서능력 요인중 정서의 명확성이 유의미하게 낮았으며, 자신에 대한 정서 주의는 많이 기울이는 것으로 나타났다. 뇌정보 처리에서는 주로 우반구 우세적 정보처리를 많이 하는 것으로 나타났다 뇌정보처리 특성과 정서 명확성 그리고 정서주의가 문제행동의 하위 요인인 공격성향과 비행성향 모두 유의미하게 설명하는 것으로 나타났다. 반면, 성별과 정서개선, 성별과 정서명료의 상호작용효과가 나타나, 이 두 요인이 공격성과 비행에 영향을 주는 효과가 남자와 여자학생 간에 다르게 나타났다.

• Spatial Information Research
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• 제21권6호
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• pp.81-89
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• 2013

최근 국외에서 수행된 몇몇 선행 연구들은 주택 가격과 개인 및 지역사회의 비만 수준 사이에 밀접한 상관관계가 존재함을 보여준다. 이는 주택 가격이 개인 및 지역의 사회경제적 수준을 나타내는 지표로 쓰일 수 있음을 시사한다. 본 연구는 우리나라에서도 지역의 주택 가격수준이 지역에 거주하는 개인들의 집계된 건강수준을 잘 설명할 수 있는지 분석하였다. 분석결과는 우리나라에서도 해외의 사례에서와 같이, 지역의 주택 가격으로 대표되는 사회경제적 수준이 높을수록 지역의 비만도가 낮아지는 것을 보여주었다. 그리고 지역의 평균적 주택 가격수준이 비교된 여타의 사회경제적 수준 지표들 못지 않게 지역의 비만인구 비율을 잘 설명하고 있음을 보여주었다. 본 연구결과는 주택 가격이 다른 사회경제적 지표들과 같이 지역의 사회경제적 수준을 대표하는 효과적인 지표가 될 수 있음을 보여준다.

• Annals of Clinical Neurophysiology
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• 제15권2호
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• pp.42-47
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• 2013

Background: Diffusion-weighted image (DWI) might be useful to predict the prognosis of acute hypoxic encephalopathy. The aim of our study was to test whether the early change and extent of DWI abnormalities can be an indicator of the clinical outcome of hypoxic encephalopathy. Methods: Forty-four patients who were diagnosed as hypoxic encephalopathy due to the cardiorespiratory arrest were retrospectively identified. Clinical variables were determined, and the DWI abnormalities were counted by four areas: cortex, subcortical white matter, cerebellum and deep grey matter, and were divided into three groups by the extent of lesions. Prognosis was classified as 'poor' (Glasgow coma scale (GSC) at 30 days after arrest <9 or death) and 'good' (GSC at 30 days after arrest ${\geq}9$). Results: GCS at day 3 (p<0.001), presence of seizure (p=0.01), and presence of lesion (p<0.001) were significantly different in prognosis, but statistically there is no association with the extent of lesions and prognosis (p=0.26). Conclusions: Presence of early DWI changes could predict the clinical outcome of hypoxic encephalopathy after cardiorespiratory arrest.

• 마케팅과학연구
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• 제16권2호
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• pp.77-94
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• 2006

이 연구는 가격을 품질의 지표로 사용하는 상황의 가격반응함수를 도출하여 다음과 같은 연구를 수행하였다. 첫째, 다속성 선택기준의 조합을 이용하여 세분시장별로 가격을 품질의 지표로 사용하는 하위집단과 그렇지 않은 하위집단을 추출하였고, 둘째, 기존연구에서 사용된 분석단위인 제품이나 상표에서 벗어나 세분시장을 분석단위로 하여 가격이 품질의 지표로 사용되는 세분시장을 확인하였다. 이를 위해 첫째, 중국의 홈씨어터 시장을 대상으로 CBC(choice-based conjoint analysis)를 통해 얻어진 자료를 혼합회귀분석(mixture regression model)에 의해 시장 세분화하였고, 그 결과 표본전체시장 및 세개의 세분시장에서 가격을 품질의 지표로 사용하는 독특한 가격반응함수를 가진 세분시장을 확인하였다. 이를 통해 학술적으로는 가격-품질 평가집단 연구의 범위를 세분시장별로 확대하고, 실무적으로는 실무종사자는 가격-품질 평가가 이루어지는 가격대보다 높은 가격을 시장에 제시함으로써 이익을 더 많이 취할 수 있게 되는 장점을 기대하였다.

• Safety and Health at Work
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• 제7권1호
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• pp.43-48
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• 2016

Background: Work Ability Index (WAI) is a well-known and valid self-report tool that has been widely used in various studies to identify and avoid early retirement and work-related disability. Nevertheless, very few studies have been carried out to evaluate work ability in Iran. We aimed to investigate the WAI and the effect of work-related stress on it among Iranian workers. Methods: A cross-sectional, descriptive and analytic study was carried out among 449 workers from five working sectors in three big cities of Iran. Work ability and work-related stress were measured using the Persian version of WAI and the Persian version of Health and Safety Executive Stress Indicator Tool. Results: More than a third of the workers surveyed (34.70%) did not have an appropriate level of work ability (WAI < 37). There was a significant correlation between subscales of work-related stress and the mean score of WAI. Furthermore, the variables of body mass index, sleep quality, exercise activity, job tenure, and three subscales of work-related stress including demands, supervisor support, and role were significant predictors of WAI. Conclusion: According to the results of this study, the interventional programs must be focused on improving supervisors support, eliminating ambiguity and conflicts in the role of workers in their job and organization, reducing job demands, improving sleep quality, and increasing exercise activity.