남해도 금산의 가을 · 겨울철 초본 자생식물 조사연구

송환준,이정화,정연옥,박중춘,허무룡 경상대학교 농업생명과학연구원 2007 농업생명과학연구 Vol.41 No.2

여름철 남해 금산에 자생하는 초본 자생식물 조사연구

송환준,정연옥,박중춘,허무룡,이정화 인간식물환경학회 2007 인간식물환경학회지 Vol.10 No.2

The Korea native plants of south-east of Mt. Gumsan in the summer was 32 families and 77 species, then the compositae had the largest species as 16. The pteridaceae was I species. The south-west of Mt. Gumsan was 32 families and 72 species. The gramineae was 9 species, and selaginellaceae and aspidiaceae was 1 species, respectively. The north-east of Mt. Gumsan was 42 families and 100 species. The compositae was 9 species, and aspidiaceae was 5, polypodiaceae was 2, and pteridaceae was 1 species, respectively. The north-west of Mt. Gumsan was 43 families and 135 species. The compositae was 24 species, and aspidiaceae was 3, pteridaceae was 2, and lycopodiacea was 1 species, respectively.

남해도 금산의 봄에 자생하는 초본식물 조사연구

송환준,정연옥,박중춘,허무룡,이정화 인간식물환경학회 2007 인간식물환경학회지 Vol.10 No.2

The Korea native plants of south-east of Mt. Gumsan in the spring was 13 families and 31 species. The liliaceae was 10 species, the largest plants of them. The south-west of Mt Gumsan was 13 families and 23 species, the orchidaceae and cyperaceae were 5 species, respectively. Selaginellaceae was 2 species and polypodiaceae was 1 species. The north-east of Mt. Gumsan was 15 families and 32 species, Fumariaceae was 5 species and aspidiaceae was 1 species. The north-west of Mt. Gumsan was 29 families and 68 species, among of them, the compositae was 9 species. Aspleniaceae, lycopodiaceae, and aspidiaceae was 1 species, respectively.

MapReduce 기반 분산 이미지 특징점 추출을 활용한 빠르고 확장성 있는 이미지 검색 알고리즘

송환준(Hwan-Jun Song),이진우(Jin-Woo Lee),이재길(Jae-Gil Lee) 한국정보과학회 2015 정보과학회논문지 Vol.42 No.12

IoT 시대를 맞아 모바일 기기의 급격한 성능 향상에 힘입어 폭발적으로 증가하는 멀티미디어 빅데이터의 빠른 처리가 요구되고 있다. 하지만, 이런 환경의 대격변 속에서도 이미지 검색 연구 분야에서는 정확도 향상에 주로 초점을 맞춘 나머지, 고해상도 멀티미디어 데이터 Query에 대한 빠른 처리 측면에서는 제대로 대응하지 못하고 있다. 이에 우리는 이미지 검색만을 분산화한 선행연구와 달리 MapReduce 기반 분산 이미지 특징점 추출 기법을 활용하여 정확도는 유지하면서 빠른 응답시간을 확보하며, BIRCH 인덱싱을 기반으로 메모리 확장성까지 해결한 새로운 분산 이미지 검색 알고리즘을 제안한다. 그리고 제안하는 분산 이미지 검색 알고리즘의 정확도, 처리시간, 확장성에 대한 실험을 통해 뛰어난 성능을 확인한다. With mobile devices showing marked improvement in performance in the age of the Internet of Things (IoT), there is demand for rapid processing of the extensive amount of multimedia big data. However, because research on image searching is focused mainly on increasing accuracy despite environmental changes, the development of fast processing of high-resolution multimedia data queries is slow and inefficient. Hence, we suggest a new distributed image search algorithm that ensures both high accuracy and rapid response by using feature extraction of distributed images based on MapReduce, and solves the problem of memory scalability based on BIRCH indexing. In addition, we conducted an experiment on the accuracy, processing time, and scalability of this algorithm to confirm its excellent performance.

원통형 히터가 장착된 수조 내부의 온도분포 및 온도성층화 현상에 관한 실험적 연구

송환준(Hwan Joon Song),김정우(Jungwoo Kim),박창용(Chang Yong Park) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.4

레이블 노이즈에 강건한 머신 러닝 및 실 세계 응용

송환준(Hwanjun Song) 한국정보과학회 2022 정보과학회지 Vol.40 No.11

가을 울금의 시비수준에 따른 생육 특성 및 생리활성물질 변화

송환준,이정화,허무룡 경상대학교 농업생명과학연구원 2015 농업생명과학연구 Vol.49 No.5

가을 울금의 품질향상을 위한 시비수준에 따른 생육특성을 조사하고, 생리활성물질의 변화를 알아본 결 과 아래와 같다. 가을 울금 정식 70일 후 지상부의 초기생육에서 주당 생체중은 시비수준 2배 처리구에서 131.5g으로 가장 무거웠으며, 초장 역시 생체중과 같은 결과로 2배 처리구에서 가장 길게 나타났다. 엽면 적 또한 시비수준 2배 처리구에서 가장 넓어지는 경향을 보였다. 정식 120일 후 생육 중기와 정식 180일 후 후기 생육에서는 지상부의 생체중, 초장, 엽면적, 총엽수 등의 생육 결과가 시비량이 증가할수록 양호 해지는 양상을 보였으며, 생육초기의 결과와 다소 차이를 보였다. 정식 180일째 근경중은 1/2배 처리 58.2g, 1배 처리 142.2g, 2배 처리 95.1g, 4배 처리 79.1g으로 1배 처리에서 1/2배 처리에 비해 약 244%, 4배 처리에 비해 180% 무거운 것으로 나타났다. 시비수준에 따른 가을 울금 근경의 curcumin의 함량은 시비수준이 증가함에 따라 curcumin, demethoxycurcumin, bisdemethoxycurcumin의 농도가 유 의성 있게 증가한 것으로 나타났다. 가을 울금의 curcumin 함량 증가를 위한 시비수준은 1배 처리가 가 장 적합할 것으로 사료된다. 시비수준에 따른 근경의 항산화 활성물질은 2배 처리에서 총 phenol 함량이 11.1mg/100g으로 가장 높았으며, 1배 처리에서 가장 낮았다. Flavonoid 함량은 1배 처리에서 8.50mg/100g으로 가장 높았으며, 4배 처리에서 5.30mg/100g으로 시비수준이 증가함에 따라 감소하는 경향이었다. Oxalic acid, tartaric acid, malic acid, citric acid 등 유기산은 시비수준이 증가함에 따라 그 함량도 증가하는 경향을 보였다. At 70 days after planting, the fresh weight of shoot for Curcuma longa was the most heavy in 2x fertilization treatment(131.5g/plant) and shoot length and total leaf area were grater in 2x fertilization treatment than other treatments. At 120 and 180days after planting, both of them the growth including in the fresh weight, shoot length, total leaf area, and total leaves number for C. longa was promoted by increasing the fertilization level. It was obtained that the growth pattern was different depends on the growth stage at 70, 120, and 180days. At 180days after planting, the fresh weight of rhizome was 58.2g in 1/2x, 142.2g n 1x, 95.1g in 2x, and 79.1g in 4x fertilization treatment. The fresh weight of rhizome was higher up to 244% and 180% in 1x than 1/2x and 4x treatment, respectively. It was obtained that the contents of curcumins as curcumin, demethoxy-curcumin, bisdemethoxycurcumin significantly increased depending on increasing the fertilization levels. As the results, it suggests that the fertilization level for increasing the curcumins contents was suitable in 1x treatment. The contents of total phenols, is one of antioxidant compounds, increased in 2x, but decreased in 1x treatment. Flavonoids contents was highest by 8.5mg/100g in 1x treatment, but in decreased in 4x treatment by 5.3mg/100g. The contents of organic acid including oxalic acid, tartaric acid, malic acid, and citric acid also increased by increasing the fertilization levels.

가을 울금의 Curcumin 유도체 분리 및 구조분석

송환준,이정화,허무룡 경상대학교 농업생명과학연구원 2015 농업생명과학연구 Vol.49 No.5

새로운 기능성 소득 작물로서의 가치 향상과 재배기술 보급을 위한 기초자료로 활용하기 위하여 가을 울금의 curcumin 유도체 분리 및 구조를 분석하였으며, 지표물질에 대한 정량과 정성분석을 하였다. 가을 울금의 근경을 추출하고 column chromatography을 통하여 5종의 물질을 분리하였다. 이들 화합 물은 1H-NMR과 13C-NMR 분석을 행하여 구조를 동정하였다. 이들 화합물은 HPLC로 정량분석한 결과 주요 화합물은 HPLC에서 화합물 1(curcumin): 13.8분, 화합물 2(demethoxycurcumin): 13.1분, 화합 물 3(bisdemethoxycurcumin): 12.6분, 화합물 4(1-hydroxy-1,7-bis(4-hydroxy-3-methoxypheny1) -6-heptene-3,5 -dione): 8.7분, 화합물 5(dihydrocurcumin): 12.1분에서 각각 나타났다. The present study was performed to improve the value of beneficial crop for Curcuma longa as a functional food and to apply the foundation data for suppling its cultivation technology. And the structure in curcumins and the separation of derivatives were analysed, and the qualitative and quantitative analysis for the curcumin was conducted. In this study. we isolated five curcumin derivatives (1-5) from the tuberous roots of Curcumin longa and their structure were identified using spectroscopic methods including 2D-NMR. We performed a comparative and quantitative analysis of the levels of individual bioactive compounds (1-5) within the native tuberous root using HPLC analysis. The nature of each peak in the HPLC trace was doubly verified by comparison with retention time of the pure compound and also HPLC of each fraction. All compounds examined in this study were detected in HPLC compounds (1-5) appeared as principal peaks in chromatogram such as 13.8min: curcumin (1), 13.1min: demethoxycurcumin (2), 12.6min: bisdemethoxycurcumin (3), 8.7min: 1-hydroxy-1,7-bis(4-hydroxy- 3-methoxypheny1)-6-heptene-3,5- dione (4), 12.1min: dihydrocurcumin (5). Finally, we established the standard curve for each compound for quantitative analysis.

일상 기억력 향상 어플리케이션 : 메아리

송환준(Hwanjun Song),고동균(Donggyun Ko),권가진(Gahgene Gweon) 한국HCI학회 2014 한국HCI학회 학술대회 Vol.2014 No.12

첨단 기기의 사용은 사용자들의 삶을 편하게 해주지만 이것의 지나친 사용은 일상 기억력의 감퇴를 유발하는 디지털 치매라는 신종 질병을 일으킨다. 따라서 이를 예방하기 위한 개개인의 노력의 필요성이 커지고 있다. 그러나 일상 기억력의 감퇴를 막거나 이를 향상시키려고 노력하는 사람은 찾아보기 힘든데 본 논문은 그 이유를 설문조사와 인터뷰를 통하여 알아내고 기존에 일상 기억력 향상에 쓰이는 방법의 한계를 찾아낸다. 그리고 MEARY 라는 에듀테인먼트 어플리케이션을 제안하여 기존 방법의 한계를 극복하기 위한 해결책을 제시하며 어플리케이션을 소개한다. 또한 10 명의 사용자들에게 일주일 동안 MEARY 를 사용하게 하는 실험을 수행하여 MEARY 어플리케이션이 실제로 일상 기억 능력을 향상시키는데 효과가 있음을 보인다. Although using state of the art equipment makes people’s lives easier, excessive use of these equipment cause a new disease called Digital Dementia. This disease decreases ordinary life memory of people. However, it is difficult to find person who try to improve their daily life memory. We surveyed to know the reason for this and found some limitation of existing method for improving ordinary life memory. Also, we made an android edutainment application called MEARY to solve these limitation. Finally, we conducted an evaluation with 10 users over 7 days. The result of evaluation shows daily life memory of user is really increased and user also feels that their memory ability is increased.

병실 내 실내 식물이 수술환자의 혈중 코티졸 감소에 미치는 영향

박성현,장정갑,송환준,박중춘,허무룡 한국인간·식물·환경학회 2008 인간식물환경학회지 Vol.11 No.1

Surgical patients have to deal with multiple stresses during hospitalization such as pain and physical discomfort, fear of medical procedures, and unfamiliarity with hospital equipment and environment. Using a blood cortisol test, one of the well-known measurements of stress responses, this study performed a randomized clinical trial with surgical patients to evaluate if plants in hospital rooms have therapeutic influences. Fifty-two patients recovering from a surgery were randomly assigned to hospital rooms with or without plants. Patients in the plant treatment room viewed seven species of foliage and flowering plants during postoperative recovery periods. Level of blood cortisol were compared between plant room patients and control room patients before surgery and discharge for two months. Patients in hospital rooms with plants and flowers had a significantly lower level of cortisol (p<0.044) as compared to patients in the control rooms. Male patients in plant rooms also showed a significantly lower level of cortisol (p<0.04) as compared to those in control rooms. No significant differences, however, were noted in female patients between control and plant rooms. The results of this study suggested that experience of plant interactions may positively affect patients' stress responses, thus increase relaxation. Further research will support hospital administrator and medical doctor decisions to use plants as a healing modality.