웨어러블 시스템 기반의 다양한 생체신호 획득 및 분석을 위한 직물전극 성능평가에 관한 연구

김소담(So Dam Kim),김성윤(Seong Yoon Kim),김현우(Hyun Woo Kim),김영환(Young Hwan Kim) 대한전기학회 2019 대한전기학회 학술대회 논문집 Vol.2019 No.2

전자직물 기반의 스마트 베이스 레이어를 통한 생체신호 측정 스마트 의류 시스템 개발

김소담(So Dam Kim),김성윤(Seong Yoon Kim),김현우(Hyun Woo Kim),김영환(Young Hwan Kim) 대한전기학회 2019 정보 및 제어 심포지엄 논문집 Vol.2019 No.4

온라인 뉴스 사이트에서의 일반댓글과 소셜댓글의 비교분석

김소담(So-Dam Kim),양성병(Sung-Byung Yang) 한국콘텐츠학회 2015 한국콘텐츠학회논문지 Vol.15 No.4

온라인 뉴스에서 개인의 참여가 활성화 되면서 댓글의 중요성이 부각되고 있다. 최근엔 개인의 SNS(social networking site) 계정을 이용하여 댓글을 게재할 수 있는 소셜댓글 서비스가 활성화 되고 있다. 본 연구에서는 실제 온라인 뉴스 댓글 현황 데이터를 이용하여 (1) 댓글의 일반적 특성요소 중 일반댓글과 소셜댓글이 차이점을 보일 가능성이 있는 요소를 도출한 후, (2) 일반댓글에 비해 소셜댓글이 각 특성요소 별로 어떻게 다른지 비교 분석하고, 마지막으로 (3) 소셜댓글 이용 업체별로 각 특성요소가 어떻게 달라지는지를 실증 분석해보았다. 이를 위해 기존문헌 조사 및 전문가 인터뷰를 진행하여 여섯 가지 특성요소를 도출하였다. 다음으로 SPSS Statistics의 t-test의 분석 방법을 사용하여, 소셜댓글과 일반댓글이 모든 요소에서 유의한 차이를 보임을 확인하였고, ANOVA와 Duncan test 결과 트위터와 페이스북 그룹 간 차이가 유의함을 확인하였다. 본 연구를 통해 소셜댓글의 실제적인 가치를 명확히 파악할 수 있을 뿐만 아니라, 소셜댓글을 이용한 악성댓글 문제 해결에 실마리를 제공하고, 개인, 기업, 정부기관 등을 주체로 다른 분야의 적용가능성도 살펴볼 수 있을 것으로 기대한다. As the individual participation in online news sites proliferates, the importance of online news comments has been increasing. Social comment services which help people leave comments on news articles using their own SNS (social networking site) accounts have gained popularity recently. Using data gathered from an online news site, this study, therefore, (1) identifies factors differentiating social comments from general comments, (2) examines how social comments are significantly different from general comments in terms of each factor, (3) and further validates how the social comments’ characteristics vary among different type of SNS. Then, we investigated this study by applying t-test, ANOVA, and Duncan test of SPSS Statistics. Our results provide insights on the significant differences in all the factors between general and social comments. We also found that there is a significant difference between Facebook and Twitter groups among three types of SNS. The findings of this study would help assess the actual benefit of social comment services as they may provide us with several valuable leads to solve the malicious comments issue. Moreover, they would suggest the need to apply this service to other areas, such as online environments in private and public sectors.

모바일 간편결제 서비스에 대한 사용자 수용저항 요인 :

김소담(So dam Kim),Philip Park,양성병(Sung Byung Yang) 한국IT서비스학회 2017 한국IT서비스학회지 Vol.16 No.2

Since the global financial crisis of 2008, the continuous development and innovation in technology-related fields such as information and communications technology (ICT) are likely to swim against the recession. In this paradoxical situation, the necessity of financial innovation through ICT is on the rise. For this reason, the appearance of Fintech is more meaningful as a new converged industry with the potential to lead financial innovation. The term of Fintech is derived from combining ‘Finance’ and ‘Technology.’ In South Korea, one of the most popular types of Fintech is mobile payment. KakaoPay, which is the first mobile easy payment service in Korea, is a much more simplified type of mobile payment service than ones used in the past, and is provided by the most popular mobile messenger service in Korea, KakaoTalk. However, KakaoPay has few active users in spite of its many advantages, which include convenience, simplicity, and a powerful platform. Thus, the main purpose of this paper is to investigate influencing factors of user resistance on KakaoPay. In order to investigate specific factors, a research model is developed based on the unified understanding of user resistance put forth by Laumer and Eckhardt (2012). After gathering online survey data from KakaoTalk users, an empirical analysis is conducted to verify this research model. The results of this study give insights regarding user resistance factors in the Fintech sector, and by so doing, it is expected that the important factors of user resistance could help the diffusion of new services when new mobile payment services appear in the near future.

황칠나무 꽃의 곤충 방화, 화밀의 분비 특성과 당 함량 및 아미노산 분석

김문섭(Kim Moon-Sup),김혜수(Kim Hyeusoo),김소담(Kim So-Dam),박상진(Park Sang-Jin),송정호(Song Jeong-Ho),김세현(Kim Sea-Hyun) 한국양봉학회 2015 韓國養蜂學會誌 Vol.30 No.4

기후변화협약에 대응하는 건물에너지 정책에 관한 의식조사 연구

김혜진(Kim, Hye-Jin),탁지연(Tak, Ji-Yeon),이민정(Lee, Min-Jeong),이하연(Lee, Ha-Yeon),김소담(Kim, So-Dam),최주혜(Choi, Ju-Hye),김나임(Kim, Na-Im),김은서(Kim, Eun-Seo),김병선(Kim, Byung-Seon) 대한건축학회 2017 대한건축학회 학술발표대회 논문집 Vol.37 No.2

According to Paris Agreement that will replace Kyoto Protocol, Korea set a target of 37% reduction in Business As Usual (BAU). Buildings account for about 30% of Green House Gas (GHG) emissions, and many countries are promoting the policy to supply green building. Korea induces energy efficiency improvement and energy saving of buildings through a range of policies. However, it has a difficulty in producing actual effect by problems of the process of policy formulation and lack of awareness of policy demanders. Therefore, I searched solutions to supply green building and save energy using buildings to analyse and examine ordinary citizens pertaining to government policy.

희귀 및 멸종위기식물인 광릉요강꽃의 개체군 구조 및 지속성

이동형 ( Dong-hyoung Lee ),김소담 ( So-dam Kim ),김휘민 ( Hwi-min Kim ),문애라 ( Ae-ra Moon ),김상용 ( Sang-yong Kim ),박병배 ( Byung-bae Park ),손성원 ( Sung-won Son ) 한국환경생태학회 2021 한국환경생태학회지 Vol.35 No.5

광릉요강꽃(Cypripedium japonicum Thunb.)은 한국, 중국, 일본에 분포하는 동아시아 특산식물로, 지구 수준의 IUCN Red List “위기(Endangered, EN)”로 평가되며, 한국의 국가 Red List에서는 “멸종위기(Critically Endangered, CR)”에 포함된다. 본 연구는 광릉요강꽃 자생지에서 7년 동안 수행된 개체통계학적(demographic) 모니터링 자료를 바탕으로 개체군 구조 및 변화양상을 분석하고, 개체군의 지속성에 대하여 예측하였다. 광릉요강꽃은 국내 7개 지역(포천, 가평, 화천, 춘천, 영동, 무주, 광양)에서 자생지가 관찰되었고, 15개 아개체군에 4,356개체가 생육하는 것으로 확인되었다. 개체군 크기 및 구조는 지역별로 상이하였으며, 인위적 관리가 개체군 크기 및 구조 변화에 중요한 영향을 미치고 있었다. 7년 동안 개체 수 변화를 모니터링한 결과 광릉요강꽃의 개체군 생존력(Population Viability Analysis, PVA)은 지역별로 다양한 경향을 보였다: 향후 1세기 안에 멸절할 가능성은 포천 0.00%, 광양 10.90%, 춘천 24.05%, 화천 79.50%로 예측되었다. 모니터링이 수행된 위 연구지역은 현지 내 보호시설로 인위적 출입을 제한하고 있어 광릉요강꽃의 최대 위협요인인 인위적 남획 변수가 개체군 생존력에 반영되지 않았다. 즉, 실질적인 멸절 위험도는 본 연구에서 추정된 값보다 현저하게 클 것으로 예상된다. 국내 광릉요강꽃 개체군의 멸절위험도의 객관적 판단을 위해서는 향후 다양한 위협요인이 있는 여러 지역의 개체군 정보가 반영될 필요가 있으며, 국내·외로 광릉요강꽃 개체군에 대한 개체통계학적 모니터링을 확대해 나가야 할 것이다. Cypripedium japonicum Thunb. is an endemic plant in East Asia, distributed only in Korea, China, and Japan. At the global level, the IUCN Red List evaluates it as "Endangered Species (EN)," and at the national level in Korea, it is evaluated as "Critically Endangered Species (CR)." In this study, we investigated the characteristics of the age structure and the sustainability of the population based on the data obtained by demographic monitoring conducted for seven years in the natural habitat. C. japonicum habitats were observed in 7 regions of Korea (Pochoen, Gapyeong, Hwacheon, Chuncheon, Yeongdong, Muju, Gwangyang), and 4,356 individuals in 15 subpopulations were identified. The population size and structure differed from region to region, and artificial management had a very important effect on the size and structural change of the population. Population viability analysis (PVA) based on changes in the number of individuals of C. japonicum showed a very diverse tendency by region. And the probability of population extinction in the next 100 years was 0.00% for Pocheon, 10.90% for Gwangyang, 24.05% for Chuncheon, and 79.50% for Hwacheon. Since the above monitored study sites were located within the conservation shelters, which restricted access by humans, unauthorized collection of C. japonicum, the biggest threat to the species, was not reflected in the individual viability. So, the risk of extinction in Korea is expected to be significantly higher than that estimated in this study. Therefore, it is necessary to reflect population information in several regions that may represent various threats to determine the extinction risk of the C. japonicum population objectively. In the future, we should expand the demographic monitoring of the C. japonicum population known in Korea.

완도지역 붉가시나무림내 군집구조의 이질성

박인협 ( In Hyeop Park ),김소담 ( So Dam Kim ),박종원 ( Jong Won Park ) 한국임학회 2014 산림과학 공동학술대회 논문집 Vol.2014 No.-

난대성 상록활엽수림인 붉가시나무림내 군집구조의 이질성을 파악하기 위하여 완도수목원 백운로 상부에 약 10ha의 면적으로 분포하고 있는 붉가시나무림에 20m×25m 조사구 8개를 고르게 설치하여 조사구별 삼림개황, 상대중요치, 종다양성 등을 조사분석하였다. 조사구별 삼림개황으로 교목상층의 임목밀도는 43-92본/500㎡, 평균흉고직경은 13.8-21.3㎝, 흉고단면적은 1.4-2.3㎡/500㎡이었다. 조사구별 교목층의 붉가시나무 상대우점치는 60.1-95.1%, 아교목층의 동백나무 상대우점치는 54.6-91.8%로서 조사구간 상대우점치의 차이는 있으나 우점종은 공통적이었다. 관목층의 경우 상대우점치가 가장 높은 우점종은 붉가시나무, 동백나무, 녹나무 등으로 조사구간 차이가 있었다. 종다양성을 분석한 결과 조사구별 출현종수는 10-19종, 종다양도(H`)는 0.657-0.923, 균재도(J`)는 0.528-0.750이었다. 조사구별, 수관층별 상대우점치에 의한 조사구간 유사도지수를 산출한 결과 교목 층은 63.1-95.1%, 아교목층은 57.4-97.1%, 관목층은 15.9-77.8%이었다. 이상을 종합하면 붉가시나무림내 군집구조는 이질성이 비교적 높으며, 특히 관목층의 이질성이 높은 것으로 나타났다. A Quercus acuta forest at Wando Island was studied to investigate heterogeneity of community structure in a natural evergreen broad leaved forest. Eight 20 m × 25 m plots were established in the Quercus acuta forest and vegetation analysis for each plot was carried out. For the tree layers, density were 43-92 trees/500㎡, Mean DBH were 13.8-21.3 ㎝, and basal area were 1.4-2.3 ㎡/500㎡. Importance percentage of Quercus acuta for the tree layers were 60.1-95.1% and those of Camellia japonica for the subtree layers were 54.6-91.8%. Number of woody species were 10-19 species, species diversity(H`) were 0.657-0.923, and evenness(J`) were 0.528-0.750. Similarity indices between plots were 63.1-95.1% for tree layers, 57.4-97.1% for subtree layers, and 15.9-77.8% for shrub layers.

전남 여수지역 곰솔의 현존량 확장계수, 상대생장식 및 임분 현존량

박인협 ( In-hyeop Park ),김소담 ( So-dam Kim ) 한국환경생태학회 2018 한국환경생태학회지 Vol.32 No.5

곰솔의 줄기밀도, 현존량 확장계수, 상대생장식 및 임분 현존량을 파악하기 위하여 전라남도 여수지역에 위치하고 있는 15년생, 29년생, 45년생 등 3개 곰솔 천연임분을 대상으로 임분별 5주씩 총 15주의 표본목을 선정 벌목하여 조사하였다. 줄기밀도는 0.440-0.457g/cm³이었으며, 임분간 유의적인 차이는 없었다. 지상부와 뿌리를 포함한 임목 전체의 현존량 확장계수는 모두 임령이 증가할수록 감소하였으며, 임분 1은 지상부 현존량 확장계수에서 임분 2, 3과 유의적인 차이가 있었고, 임목 전체 현존량 확장계수에서 임분 3과 유의적인 차이가 있었다. 이것은 임령이 증가할 수록 줄기의 건중량 구성비가 높아지기 때문이며, 임분 1의 경우 유령림의 생장특성을 보이기 때문으로 판단되었다. 흉고직경(D) 또는 흉고직경과 수고(D²H)를 독립변수로 하고 부위별 건중량(Wt)을 종속변수로 하는 2개 유형의 상대생장식(Wt=aD^b, Wt=a(D²H)^b)을 유도하고 적합도를 검정하였다. 임분 1, 2, 3의 지상부 현존량은 각각 50.72t/ha, 89.92t/ha, 194.07t/ha이었으며, 뿌리를 포함한 임목 전체 현존량은 각각 61.62t/ha, 113.12t/ha, 248.36t/ha이었다. Three natural Pinus thunbergii stands in southern Korea were studied to investigate stem density, biomass expansion factors, allometric equations and stand biomass. Stand ages of stand 1, 2 and 3 were 15, 29 and 45 years old, respectively. Three 10m×10m plots were set up, five sample trees were cut and roots of three sample trees were excavated for dimension analysis in each stand. Stem density of stand 1, 2 and 3 were 0.450/cm³, 0.440/cm³ and 0.457g/cm³, respectively, and there was no significant difference among the three stands. Biomass expansion factors of above-ground and total tree decreased with increasing stand age. Above-ground biomass expansion factor of stand 1 was significantly higher than those of stand 2 and 3, and total tree biomass expansion factor of stand 1 was significantly higher than that of stand 3. Allometric equations were developed for the 15 sample trees of the three stands based on D or D²H. Above-ground biomass of stand 1, 2 and 3 were 50.72t/ha, 89.92t/ha, 194.07t/ha, respectively, and total tree biomass of stand 1, 2 and 3 were 61.62t/ha, 113.12t/ha, 248.36t/ha, respetively.

완도지역 붉가시나무의 개화특성과 종실생산

박인협 ( In Hyeop Park ),김소담 ( So Dam Kim ),박종원 ( Jong Won Park ),채경석 ( Kyung Seog Chae ),김갑태 ( Gab Tae Kim ),엄태원 ( Tae Won Um ) 한국환경생태학회 2014 한국환경생태학회지 Vol.28 No.3

Flowering characteristics and acorn production of Quercus acuta were studied in a Quercus acuta forest at Wando island, Korea. Three sample trees were cut and measured to investigate flowering characteristics during flowering season. Eight 20m×50m quadrats were set up and three 1m×1m seed traps were established within each quadrat to investigate acorn production. There were no significant differences in number of female and male inflorescence per bearing shoot among crown positions, but these values decreased from the upper part to the lower part of crown. The number of female flowers was 5,025 flowers/tree, and of the total number, 60.3% was in the upper part, 28.4% was in the middle part and 11.3% was in the lower part of crown. The number of male flowers was 7,063 flowers/tree and increased from the lower part to the upper part of crown. Acorn Flowering characteristics and acorn production of Quercus acuta were studied in a Quercus acuta forest at Wando island, Korea. Three sample trees were cut and measured to investigate flowering characteristics during flowering season. Eight 20m×50m quadrats were set up and three 1m×1m seed traps were established within each quadrat to investigate acorn production. There were no significant differences in number of female and male inflorescence per bearing shoot among crown positions, but these values decreased from the upper part to the lower part of crown. The number of female flowers was 5,025 flowers/tree, and of the total number, 60.3% was in the upper part, 28.4% was in the middle part and 11.3% was in the lower part of crown. The number of male flowers was 7,063 flowers/tree and increased from the lower part to the upper part of crown. Acorn