부산, 울산, 경남 산림습원의 관속식물상 변화 연구

곽수빈,변준기,조현제,윤충원,정세훈,신재성,김경태,유주한,안종빈 한국습지학회 2025 한국습지학회지 Vol.27 No.2

본 연구는 부산, 울산, 경남 내에 분포하는 산림습원 22개소를 대상으로 하여 2015년부터 2022년까지의 관속식물상의 변화를분석하여 기후변화에 취약한 산림습원의 보전대책 수립, 산림생물다양성 증진에 기여하고자 연구를 수행하였다. 부산, 울산, 경남 내에 분포하는 산림습원은 2015년 조사 시 91과 206속 284종 9아종 21변종 4품종 318분류군으로 확인되었다. 출현빈도가 가장 많은 식물은 골풀로 22개소 중 15개소에서 출현하여 가장 높은 빈도를 보였다. 또한 2차 조사가 시행되었던연도에 따라 Group Ⅰ(2020년), Group Ⅱ2021년), Group Ⅲ(2022년)로 나누어 관속식물상을 비교한 결과, Group Ⅰ에서는특별한 차이가 나타나지 않았고, Group Ⅱ에서는 총46분류군이 감소하였다. 반면 Group Ⅲ에서는 총 79분류군이 증가한것으로 나타났다. 한반도 특산식물은 노각나무, 벌개미취, 병꽃나무로 총 3분류군, 산림청 지정 희귀식물은 EN등급 가시오갈피및 자주땅귀개, NT등급 큰방울새란이 확인되었다. 또한 2022년 Group Ⅲ에서는 VU등급인 통발과 큰방울새란이 새롭게확인되었다. 식물구계학적 특정식물은 총 38과 51속 54종 2변종 56분류군으로 나타났다. 침입외래식물은 총 9과 13속 13종13분류군으로 조사되었다. 습지선호도에 따른 식물을 집계한 결과, 대부분 절대육상식물이 증가한 것으로 나타났고, 습원면적 또한 감소한 것으로 확인되었다. 따라서 산림습원의 육화와 소실에 대비할 수 있도록 산림유전자원보호구역 지정 등을통해 체계적인 관리가 필요할 것으로 판단된다. This study analyzes changes in the vascular plant flora across 22 forest wetlands located in Busan, Ulsan, and Gyeongnam between 2015 and 2022. The objective is to support the development of conservation strategies for forest wetlands vulnerable to climate change and to enhance forest biodiversity. In the initial 2015 survey, the study sites were found to host a total of 318 vascular plant taxa, including 91 families, 206 genera, 284 species, 9 subspecies, 21 varieties, and 4 forms. The most frequently occurring species was Juncus decipiens, identified at 15 of the 22 sites. The sites were categorized into three groups based on the year of subsequent surveys: Group Ⅰ(2020), Group Ⅱ(2021), and Group Ⅲ(2022). Group Ⅰ showed no significant change in flora, while Group Ⅱ exhibited a decrease of 46 taxa. In contrast, Group Ⅲ recorded an increase of 79 taxa. Three endemic species Stewartia koreana, Aster koraiensis, and Weigela subsessilis were observed. In addition, rare species designated by the Korea Forest Service were identified: Eleutherococcus senticosus and Utricularia uliginosa (EN), and Pogonia japonica (NT). In 2022 (Group Ⅲ), Utricularia japonica (VU) and Pogonia japonica were newly recorded. The summary of plants according to wetland preference indicated an increase in Obligate upland plant, along with a reduction in wetland area. Therefore, systematic management, such as the designation of forest genetic resource protected area, is considered necessary to prepare for the terrestrialization and loss of forest wetlands.

PRACTICAL IMPLEMENTATION OF BOUNDARY CONDITIONS IN THE THOMAS ALGORITHM

곽수빈 한국산업응용수학회 2025 Journal of the Korean Society for Industrial and A Vol.29 No.2

The Thomas algorithm is widely used for efficiently solving tridiagonal systems that arise from finite difference discretizations of partial differential equations. While the core algorithm is well established, the practical treatment of boundary conditions, especially periodic boundary, often requires careful implementation to maintain numerical stability and accuracy. This paper presents a comprehensive discussion of practical strategies for incorporating various boundary conditions into the Thomas algorithm. We compare different implementation ap- proaches, analyze their computational implications, and provide code-level insights to facilitate integration into numerical solvers. Benchmark tests on prototypical diffusion-type equations demonstrate the effectiveness and robustness of the proposed methods.

기후변화 시나리오를 이용한 Iris속 3종의 정원소재식물 활용 적합성 탐색†

곽수빈,조승주,이경미,윤호근 (사)한국정원디자인학회 2025 한국정원디자인학회지 Vol.11 No.4

본 연구는 정원소재식물로 활용되는 Iris속의 각시붓꽃(Iris rossii Baker), 꽃창포(Iris ensata Thunb.), 붓꽃(Iris sanguinea Donn ex Hornem.)을 대상으로 종분포모델(MaxEnt)을 이용하여 기후변화 시나리오(SSP2-4.5, SSP5-8.5)별 서식지 적합성 변화를 예측하고, 환경요인별 영향을 분석하였다. 종분포모델 분석 결과, 각시붓꽃은 고도와 일사량에 민감하게 반응하며, 미래 시나리오(SSP-4.5, 8.5)에 분포예측 고도가 상승하는 경향을 보였다. 꽃창포는 온도 및 강수 조건에 민감하여 SSP5-8.5 시나리오에서 과습으로 인한 생육 저하가 예측되었고, 붓꽃은 강우와 온도 요인이 주요 제약 요소로 작용하여 고온다습 환경에서 서식지가 축소될 것으로 나타났다. 분포 예측 시나리오별 공간범위 및 분포지역 비교 결과, 세 종 모두 ‘높음’ 및 ‘아주 높음’ 등급의 고적합 지역은 감소하였으나, ‘보통’ 또는 ‘낮음’에 해당하는 지역은 확대되는 양상을 보였다. 이는 기후변화에 따라 자생식물의 서식지가 분산․축소될 가능성을 시사하며, 정원 식재 시 기후내성과 미세기후를 고려한 식재 전략 수립의 필요성을 제기한다. This study aimed to evaluate the climate adaptability and potential use of native Iris species (Iris rossii Baker, Iris ensata Thunb., and Iris sanguinea Donn ex Hornem.) as garden plants under future climate change scenarios. Using the MaxEnt species distribution model, habitat suitability was predicted under two shared socioeconomic pathways (SSP2-4.5 and SSP5-8.5), and key environmental factors influencing species distribution were analyzed. The results indicated that I. rossii responded sensitively to altitude and solar radiation, showing a tendency for its potential distribution to shift upward in future scenarios. I. ensata exhibited sensitivity to both temperature and precipitation, with potential growth decline expected under excessive moisture conditions in the SSP5-8.5 scenario. I. sanguinea was mainly influenced by rainfall and temperature, and its suitable habitats were predicted to contract under hot and humid environments. Spatial distribution analysis across scenarios revealed a general decrease in areas of “high” and “very high” suitability, accompanied by an expansion of “moderate” or “low” suitability zones. These results suggest that suitable habitats for native Iris species are likely to become fragmented and reduced under future climate conditions, emphasizing the need for climate-resilient garden design and microclimate-based planting strategies.

재질, 조명 색온도, 조명 유형이 전시 공간의 감성적 경험에 미치는 영향

곽수빈,임대건,테려히나다리,김현우,Purwojuwono, Jason Philip,최경아 한국색채학회 2024 한국색채학회 논문집 Vol.38 No.1

Understanding the impact of material choice and lighting in exhibition spaces is crucial for enhancing visitor experience and emotional engagement. This study explores the influence of material, lighting color temperature, and lighting type on emotional responses in exhibition environments. Utilizing four materials (marble, metal, wood, plaster) and combinations of two lighting color temperatures (3500K, 5000K) and two lighting types (diffuse, spotlight), 16 virtual exhibition spaces were created for evaluation. The results indicate that wood material evokes relaxing and soft emotions, whereas metal is associated with an interesting and unique mood. Low color temperature lighting (3500K) was perceived as more unique and pleasant compared to neutral color temperature lighting (5000K). Diffuse lighting generally created a soft and relaxing environment. More importantly, interaction effects were observed between material, lighting color temperature, and lighting type, indicating that they need to be strategically chosen to elicit specific emotional experiences. This study underscores the importance of considering various factors in exhibition space design to enrich visitor experience and suggests further research with diverse materials, lighting conditions, and participant demographics to deepen understanding of these elements' interplay in exhibition settings.

경주국립공원 주차장에 분포하는 침입외래식물의 현황 및 특징†

곽수빈,이혁재,유주한 (사)한국정원디자인학회 2023 한국정원디자인학회지 Vol.9 No.4

본 연구는 경주국립공원의 필수 편의시설인 주차장에 분포하는 침입외래식물의 종조성과 우점종을 분석하여 공원자원 관리와 문화․관광시설 조성 시 필요한 기초정보를 제공하는 데 목적이 있다. 분류군 현황은 20과 52속 75종으로 나타났으며, 공통으로 출현한 식물은 콩다닥냉이, 들괭이밥, 큰망초 등 10분류군이었다. 도시화지수 분석 결과, 남산지구 10.2%, 토함산지구 8.9%, 구미산지구 2.8%, 서악지구 4.9%, 화랑지구 2.9%, 소금강지구 3.4%였다. 생활형 분석 결과, 교목(M) 및 관목(N) 각 1분류군, 지표식물(Ch) 7분류군, 반지중식물(H) 18분류군, 지중식물(G) 2분류군, 일년생 식물(Th) 46분류군이었다. 원산지는 북아메리카, 확산등급은 광범위한 확산(WS)과 경미한 확산(MS)이 가장 많았다. 상대우점치 분석 결과, 서양민들레와 토끼풀의 생태적 지위가 높았다. 생태계교란 생물은 애기수영, 돼지풀, 단풍잎돼지풀, 가시상추, 미국쑥부쟁이 5분류군으로 나타났다.

블록체인 기반의 분산 에너지 수집 및 공유 플랫폼

곽수빈(Subin Kwak),강병현(Beonghyun Kang),박정호(Jungho Park),이주형(Joohyung Lee) 한국통신학회 2020 한국통신학회 학술대회논문집 Vol.2020 No.8

부산광역시 낙동강 생태공원의 귀화식물상과 특성 -을숙도생태공원, 맥도생태공원, 삼락생태공원을 중심으로-

곽수빈 ( Gwak Su-bin ),정재현 ( Jeong Jae-hyun ),유주한 ( You Ju-han ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2021 한국환경복원기술학회지 Vol.24 No.1

The purpose of this study was conducted in order to provide the necessary basic data, to establish management solutions and to improve biodiversity by calculating similarity index, urbanization index (UI), and disturbed index (DI) to understand current status of naturalized and invasive alien plants in Eulsukdo, Maekdo and Samnak ecological parks in Busan, South Korea. The numbers of naturalized plants identified in these parks were 76 taxa; 20 families, 53 genera, and 76 species. As a result of the similarity index analysis, the most similarity level (83.0%) was obtained at Eulsukdo and Maekdo parks. The numbers of invasive plants identified in the two parks were 11 taxa; Rumex acetosella L., Sicyos angulatus L., Solanum carolinense L., Ambrosia artemisiifolia L., Ambrosia trifida L., Hypochaeris radicata L., Lactuca serriola L., Solidago altissima L., Symphyotrichum pilosum (Willd.) G.L.Nesom, Paspalum distichum L., and Humulus scandens (Lour.) Merr. Overall, UI and DI were 28.6% and 66.7%, respectively, indicating that the ecosystem disruption was serious.

인구의 서울 쏠림과 지방 쇠퇴의 원인 및 해결방안 : 감성분석을 중심으로

정수빈 ( Su-been Jeong ),김재원 ( Jae-won Kim ),박서윤 ( Seo-yun Park ),곽인상 ( In-sang Kwak ),주다영 ( Da-young Joo ) 한국감성과학회 2023 한국감성과학회 춘계학술대회 Vol.2023 No.-

South Korea, which has developed around Seoul, has gradually widened the gap between Seoul and the provinces. This caused overcrowding in Seoul and the decline of the provinces, and emerged as a national problem along with a decrease in population. This study studies the causes and solutions of the population's concentration in Seoul and local decline: focusing on big data and emotional analysis. Previous studies derive solutions through statistical-based numerical surveys. However, statistical-based surveys estimate the results by investigating based on what has already happened. Induction methods that infer results based on statistical facts have high accuracy, but there are emotional areas that cannot be investigated only by statistical techniques. In particular, people's perceptions of social problems and psychological factors for individual factors can be seen as emotional areas. To this end, emotional analysis and big data analysis, which were not well used in previous studies, were used. Through emotional analysis, people's interest and public opinion are analyzed to infer the cause of the problem, and big data is used to provide a basis for the inference results. In the case of the subject of this study, upper factors such as medical care, transportation, and culture and various lower factors are intertwined. Behind these factors lies the psychological elements of positivity and denial. Through emotional analysis, the relationship between these keywords is analyzed and the psychology of the public hidden therein is grasped. In particular, since psychology has a strong subjective tendency, there is a limit to investigating it only with statistical techniques and refining it to meaningful values that can be used for reasoning results. Therefore, problem analysis using emotional analysis techniques is necessary. Emotional analysis technology is a technology that extracts positive, negative, and neutral emotions from natural language data such as text and sentences, and text data is used for this. This study used these emotional analysis technologies to analyze positive and negative factors about Seoul's population growth and local population decline, which are considered the main causes, and to identify the characteristics and problems of each region.Through this, we would like to suggest ways to help policy alternatives to solve the problem of leaning toward Seoul and local decline.

카르복시메틸 전처리된 셀룰로오스 나노섬유의 세포 독성 연구

곽지혜(Ji Hye Gwak),정수빈(Su Bin Jeong),전소영(Soyoung Juhn),성현아(Hyun-A Seong),신수정(Soo-Jeong Shin) 한국펄프·종이공학회 2019 펄프.종이기술 Vol.51 No.6

인구의 서울 쏠림과 지방 쇠퇴의 원인 및 해결방안 : 감성분석을 중심으로

정수빈,김재원,박서윤,곽인상,주다영 한국감성과학회 2023 한국감성과학회 춘계학술대회 Vol.2023 No.-