도시열섬과 대기오염 농도 간 상관성 분석

강다인(Da-In Kang),차재규(Jae-Gyu Cha),문호경(Ho-Gyung Moon),최태영(Tae-Young Choi) 대한공간정보학회 2018 한국지형공간정보학회 학술대회 Vol.2018 No.11

도시녹지 미세먼지 조절 서비스 수요와 공급의 공간적 차이 분석 - 수원시를 대상으로 -

강다인 ( Kang Da-in ),권혁수 ( Kwon Hyuk-soo ),최태영 ( Choi Tae-young ),박찬 ( Park Chan ),김성훈 ( Kim Sung-hoon ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2021 한국환경복원기술학회지 Vol.24 No.2

Urban green spaces supply ecosystem services (ESs), which are consumed by city residents and generate demand, to improve air quality. It is important to determine supply and demand for ESs and reduce the gap for efficient management. This study proposed a method to use the concept of supply and demand for ESs in the decision-making process for urban planning or management. PM10 concentrations were converted to weight for demand assessment on PM10 reduction, and PM10 absorption capacity of all green spaces including the forests, and that of urban green spaces excluding forests, was calculated for each supply assessment. The differences in the calculated supply and demand were analyzed to derive the mismatched regions in Suwon. As a result, regions with big forested areas showed sufficient supply, indicating that the degree of mismatch among administrative neighborhoods (dong) varied greatly depending on whether they had a forest. An analysis of only urban green spaces showed that all neighborhoods lacked supply. Forests with high PM10 absorption capacity had a great effect, but urban green spaces can be considered a key element in reducing PM10 in daily life. Considering the mismatch of supply and demand, spatial distribution, and population distribution, it is possible to prioritize the supply of urban green spaces to reduce PM10 and, furthermore, support decision making for priority zones subject to forest conservation and designation and cancellation of green spaces, which gives significance to this study.

코로나 19 기간 중 여교사가 지각하는 일-가정 양립갈등과 직업평판이 소명의식에 미치는 영향

강다인(DA IN KANG),이지연(JI YEON LEE) 학습자중심교과교육학회 2022 학습자중심교과교육연구 Vol.22 No.22

목적 본 연구에서는 코로나 19기간 동안 유자녀 여교사들을 대상으로 일-가정 양립갈등, 직업평판, 소명의식, 괜찮은 일의 관계를 확인하여 구조방정식 모형과 일-가정 양립갈등, 직업평판과 소명의식의 관계에서 괜찮은 일의 매개효과를 검증하고자 하였다. 방법 이를 위하여 온라인으로 전국의 유자녀 여교사 286명을 대상으로 일-가정 양립갈등, 직업평판, 소명의식, 괜찮은 일을 측정하는 척도로 구성된 설문을 실시하였고, 응답자료 중 최종 249개를 분석에 사용하였다. 수집된 자료는 SPSS20.0과 AMOS26.0을 사용하여 구조방정식모형을 통해 분석하였다. 결과 수집된 자료를 분석한 주요 결과는 다음과 같다. 첫째. 본 연구의 주요 변인들 간의 상관분석을 실시한 결과 일-가정 양립갈등과 직업평판은 유의미한 부적 상관관계가 있는 것으로 나타났다. 둘째, 일-가정 양립 갈등과 괜찮은 일은 상관관계분석 실시 결과 정적 상관관계가 있는 것으로 나타났는데 최종 모형에서도 일-가정 양립갈등은 괜찮은 일을 정적으로 예측한다는 결과가 지지되었다. 셋째, 코로나19기간 동안 일-가정 양립 갈등과 여교사가 인식하는 직업평판이 소명의식에 이르는 경로에서 괜찮은 일의 매개효과에 대한 유의성을 검증한 결과, 괜찮은 일이 일-가정 양립갈등과 직업평판을 완전 매개하는 것으로 나타났다. 이러한 연구결과에 비추어 보면 일-가정 양립갈등과 직업평판이 각각 괜찮은 일을 매개로 소명의식에, 소명의식에 영향을 주는 것으로 나타났으며, 일-가정 양립갈등/직업평판과 소명의식의 관계에서 괜찮은 일은 완전매개효과의 영향을 주고 있음을 의미한다고 볼 수 있다. 결론 코로나19 기간 동안 여교사가 자신이 경험하는 일-가정 양립갈등과 직업평판이 소명의식으로 향하는 경로에서 괜찮은 일의 매개효과가 나타나는지를 살펴봄으로서 소명의식을 수행하는 선행기제를 파악하고 상담 개입방법의 기초적인 자료를 제공하고자 하였다. Objectives In this study, the relationship between work-family balance conflict, job reputation, sense of calling, and decent work was checked for female teachers with children during the COVID-19 period, and the relationship between the structural equation model and work-family coexistence conflict, job reputation and sense of calling was positive. The purpose of this study was to verify the mediating effect of work. Methods For this purpose, an online questionnaire consisting of scales measuring work-family balance conflict, job reputation, sense of calling, and decent work was conducted for 286 female teachers with children across the country, and the final 249 responses were used for analysis. The collected data were analyzed through the structural equation model using SPSS20.0 and AMOS26.0. Results The main results of analyzing the collected data are as follows. first. As a result of a correlation analysis between the major variables in this study, it was found that there was a significant negative correlation between work-family balance conflict and job reputation. Second, the results of correlation analysis showed that there is a positive correlation between work-family balance conflict and decent work, and the final model also supported the result that work-family balance conflict positively predicts decent work. Third, as a result of examining the significance of the mediating effect of decent work on the path from work-family balance conflict and female teachers' perceived job reputation to a sense of vocation during the COVID-19 period, decent work is associated with work-family balance conflict and job reputation. appeared to be completely mediated. In the light of these research results, it was found that work-family balance conflict and job reputation influence the sense of calling and calling through good work, respectively, and in the relationship between work-family balance conflict/professional reputation and the sense of calling It can be said that good work is influencing the perfectly mediating effect. Conclusions By examining whether the mediating effect of a decent job appears on the path that female teachers experience during the COVID-19 period, the work-family reconciliation conflict and professional reputation on the path toward the sense of vocation, it is necessary to identify the preceding mechanism for carrying out the vocation and the basis of the counseling intervention method. It was intended to provide relevant data.

북한산국립공원의 탐방객 수와 훼손의 상관관계 연구

강다인 ( Kang Da-in ),성현찬 ( Sung Hyun-chan ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2016 한국환경복원기술학회지 Vol.19 No.4

This study aims to understand the relationship between visitors and the degradation of natural resources in Bukhansan national park. We analyzed the trend of the number of visitors, destruction of natural resources and decrease of biodiversity per year. We further compared three types of trails, heavily-used trails and rarely-used trails and a trail with limited access, regarding the degree of destruction in the National Park through a field survey. Our result showed that increasing number of visitors had direct and indirect impact on the destruction of natural resources in the National Park. The direct impact came from visitors`` excessive use of trails. Naturally, increasing number of visitors caused an immoderate use of natural resources. Physical degradation such as exposure of tree root, poor drainage of trails, trail erosion was more severe than other types of trails. Decreasing biodiversity or mild disturbance around trails is the indirect impact such as broken bough, worn-bark in rarely-used trails. Destruction scale greatly increased as the number of visitors increased. Real-named reservation system helped to prevent trails from degradation. Our result calls for the need of controlling the number of visitors to Bukhansan National Park to mitigate the degradation. We recommend dispersing visitors from the heavily-used trails to other trails and implementing real-named reservation system in the rarely-used trails for the effective management of the national park.

색온도 가변 LED 조명 최적화 설계 및 제작

강다일,김근율,유영문,최희락,Kang, Da-Il,Kim, Kun-Yul,Yu, Young-Moon,Choi, Hee-Lack 한국광학회 2014 한국광학회지 Vol.25 No.2

본 논문에서는 현재 양산되고 있는 Red(621 nm), Green(530 nm), Blue(453 nm), Amber(590 nm) 등 4파장의 LED 조합을 이용하여 색온도가 가변되는 동안에도 평균연색지수 및 특별연색지수 R9 값이 높게 유지될 수 있도록 조명의 스펙트럼을 최적화하였다. 최적화 시 설계의 정확도를 높이기 위하여 실제 측정한 LED 스펙트럼을 사용하였고 광선과 기구물 사이의 상호 작용을 고려한 광선 추적 기법을 활용하여 수행하였다 또한 최적화 결과를 검증하기 위하여 색온도 가변 조명 장치를 직접 제작하였으며 광 특성을 평가한 결과 색온도가 3000 K에서 6000 K까지 변하는 동안 CRI 및 R9 값이 각각 87~90, 34~93을 나타내었다. In this paper the spectra of correlated color temperature (CCT) tunable white light-emitting diode (LED) luminaires, consisting of commercial red, green, blue, and amber LED chips, were optimized to increase color rendering index (CRI), and a special CRI of R9 for deep red color was obtained. To improve the design's accuracy, measured LED spectra were used instead of mathematically modeled ones. Real CCT tunable LED luminaires with CRIs of 87-90 and R9s of 34-93 were fabricated and demonstrated at CCTs of 3000-6000 K.

Soil Aggregates and Aggregate-Associated Carbon in Response to Different Fertilization under Organic Maize Farming System

Hyun-Young Hwang(황현영),Da-In Kang(강다인),Nan-Hee An(안난희),Sang-Min Lee(이상민),Cho-Rong Lee(이초롱),Jeong-Ah Jeong(정정아) 한국토양비료학회 2022 한국토양비료학회 학술발표회 초록집 Vol.2022 No.10

한국채택국제회계기준의 도입이 재무제표에 미친 영향 : 한국가스공사에 대한 분석을 중심으로

정기위(Ki Wi Chung),김은총(Eun Chong Kim),강다인(Da-In Kang),김효정(Hyo-Joung Kim),이경관(Gyeonggwan Lee) 대구과학대학교 국방안보연구소 2020 사회융합연구 Vol.4 No.4

본 연구에서는 한국채택국제회계기준(이하 K-IFRS)의 도입이 한국가스공사의 재무제표에 어떠한 영향을 미쳤는지 분석하고자 하였다. 재무비율에 대한 분석 결과, 도입 원년인 2011년은 도입 직전 연도인 2010년에 비해 부채비율 및 효율성 비율은 하락하였으며 성장성은 상승한 것으로 나타났다. 그러나 2010년 재무제표상의 수치를 K-IFRS상의 수치로 변환한 결과 부채비율은 오히려 상승하였으며 효율성은 덜 하락하였고 성장성 비율은 더 적은 비율로 성장한 것으로 나타났다. 세부 항목별로 분석한 결과에서는 자산 가운데 매출채권 외 3개 항목이 부채 가운데는 순이연법인세부채 외 2개 항목이 자본 항목 가운데는 이익잉여금과 기타포괄손익누계액이 K-IFRS의 도입에 따른 변화가 비 K-IFRS의 도입에 따른 변화분보다 큰 것으로 나타났다. 본 연구에서는 K-IFRS를 도입한 2011년과 직전인 2010년의 재무비율과 계정과목에 대한 분석을 통해 K-IFRS가 재무제표에 중요한 영향을 미쳤다는 것을 확인할 수 있었다. 그리고 K-IFRS가 재무제표에 미치는 영향을 메이저 공기업 가운데 하나인 한국가스공사의 재무제표를 이용하였다는 점에서 공공기관 회계제도 관련 감독당국뿐만 아니라 에너지 및 유통업 관련 산업에 시사하는 바가 있을 것이다. In this study, we analyzed how the adoption of the Korea International Financial Reporting Standards (K-IFRS) had an effect on the financial statements of KOGAS. As a result of the analysis of the financial ratio, in 2011, the first year of adoption, the debt ratio and efficiency ratio fell compared to 2010 and the growth rate increased. However, as a result of converting the figures in the 2010 financial statements to the figures in K-IFRS, the debt ratio increased, the efficiency fell less, and the growth rate grew less. As a result of analysis by detailed items, account receivable, PPE, financial leased assets, available-for-sale financial assets, net deferred tax liabilities, defined benefit obligations, financial lease liabilities, retained earning and other comprehensive income were larger than the changes due to the introduction of non-K-IFRS. In this study, we found that K-IFRS had an important influence on financial statements through the analysis of financial ratios and account subjects in 2011 and immediately before the adoption of K-IFRS in 2010. In addition, the impact of K-IFRS on the financial statements will have implications not only for the supervisory authority related to the public institution accounting system, but also for the energy and distribution industry.

기술논문 : 비무장지대(DMZ) 인근의 훼손지 유형 분석 및 복원방향

성현찬 ( Hyun Chan Sung ),김수련 ( Su Ryeon Kim ),강다인 ( Da In Kang ),서정영 ( Joung Young Seo ),이상미 ( Sang Mi Lee ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2016 한국환경복원기술학회지 Vol.19 No.1

Purpose of this study is to classify damaged lands according to the cause of the damage and their influences based on characteristic of the damaged lands in DeMilitarized Zone(DMZ) area, and utilize this study as a fundamental study for establishment of ecosystem restoration system. Literature review and field survey have been conducted to review the damage status of DMZ area. For field survey, first year and second year have been conducted, in which type of the damage has been reviewed in this study. In the result, types of damage have been classified into 6 categories: ‘alteration of initial landform’, ‘loss of surface layer’, ‘land pollution’, ‘alteration of soil chemical property’, ‘decline of vegetation’, and ‘invasion of foreign species’. Restoration for each damage type is as following. First, for alteration of initial landform, the land is restored to the original landform prior to the damage and connection to surrounding ecosystem is considered. Second, for loss of surface layer, lost surface layer is restored or further loss is prevented with stabilization. Third, for land pollution, source of the pollution is eradicated or self-circulation with purification of polluted land is encouraged. Fourth, for alteration of soil chemical property, soil is restored of its original property with eradication of the pollution source and improvement of soil. Fifth, for decline of vegetation, current vegetation and anticipated alteration in future are considered and number of wild species is to be increased based on structure and characteristic of nearby vegetation. Sixth, for invasion of foreign species, prevention of dominance by risky species and facilitation ecological stability with ecological management are to be considered. Influence according to the cause of damage has occurred in secondary(indirect) influence or simultaneous occurrence of several damage types. Considering all these aspects, when type of the damage is complex, restoration process for each of former mentioned 6 damage types with solitary influence should be considered in unison.

연구논문(硏究論文) : 도시 내 자연환경(산림, 하천)과 근린공원의 연결 현황 평가 및 연결방안

성현찬 ( Hyun Chan Sung ),김수련 ( Su Ryeon Kim ),강다인 ( Da In Kang ),황소영 ( So Young Hwang ) 한국환경복원기술학회 2015 한국환경복원기술학회지 Vol.18 No.5

In this research, the connectivity status between natural environment (forests and rivers) and urban parks in view of ecological networks in a city is evaluated and on the basis of these evaluation results, a future connectivity enhancing recommendations are suggested. As a result, the 96.8% of the connectivity role of the neighborhood parks were core or connected parks and as in terms of the ecological pattern on the outer park, 84.1% of the case neighborhood parks were connected to the ecological element at least one side. Therefore, it can be expected to play a role as corridor that enables the direct connection with the natural environment if the connection plan is well established. As a result of connectivity evaluation of the parks, inside of the parks had low ecological element overall and had low connectivity, outside of the parks had 1.5 times more of low connectivity parks than high connectivity parks, and had similar disconnections such as facilities(fence, soundproof walls, breast walls, etc.), developments(roads, apartment complexes, industrial complexes, etc.), or poor greens regardless of the neighborhood with the ecological elements. To increase the connectivity of ecological network, the cities already built shall secure primarily green territory where can connect with the isolated park due to the surrounding with the developing areas and when planning for new cities or residential complexes, it shall establish a connection plan with the nearby at the beginning.

무인항공 영상을 이용한 도심녹지 온도저감 효과 분석^a

최태영 ( Tae-young Choi ),차재규 ( Jae-gyu Cha ),문호경 ( Ho-gyeong Moon ),이선미 ( Seon-mi Lee ),강다인 ( Da-in Kang ) 한국환경생태학회 2017 한국환경생태학회 학술대회지 Vol.2017 No.1