Development of a Mobile Application, "Wild Flowers of Bukhansan National Park (version 1.0)", for Identification of Plants in Bukhansan National Park

Kim, Sang-Tae,Lee, Seung-Yeon,Kim, Seung-Chul,Byun, Hye-Won,Lee, Sang-Tae,Kim, Mu-Yeal,Hong, Seok-Pyo,Chung, Young-Jae,Park, Ki-Ryong,Lee, Chung-Hee,Lee, Joong-Ku,Heo, Kyeong-In,Lee, Ji-Ye,Lee, Eun-Je National Science Museum of Korea 2011 Journal of Korean nature Vol.4 No.3

We developed the educational purpose mobile application, named "Wild Flowers of Bukhansan National Park (version 1.0)", aiming for easy identification of wild flowers for students and visitors in the park. When visitors find a flower or part of plant in the park, visitors can search for its name utilizing the pictures and characters provided in their own smartphone mobile devices or tablet PCs. The application provides pictures of wild flowers in the park and character-based searching system based on 12 diagnostic features (e.g., growth form, leaf arrangement, flower symmetry, petal color, petal number, sepal number, etc). We adopted the complete floristic survey of Chung and Lee (1962) and added species that we confirmed their distribution in the park during the development of this application. In summary, number of vascular plants in this park was estimated to be 428 taxa including 100 families, 280 genera, 327 species, 1 subspecies, 50 varieties, and 5 formas. We provided a total of 588 pictures representing 358 taxa and each taxon includes multiple pictures in many cases. Included identification quizzes can be an efficient educational tool as well as fun activity for students and visitors who are learning plant species in Korea. Our next step will include GPS function in the application for indicating visitor's location and for providing previously reported sites of the species that we interested in the map of the park. The future application which includes GPS function will be a valuable tool for the monitoring of rare plants, plant researches related to the climate changes, etc. We currently provide Korean iPhone version only, and English version and both of android versions will be serviced soon.

12M의 고해상도 360° 카메라를 사용한 주차장의 14면 주차 상태 판단 프로그램

이영지(Young-Ji Lee),이희열(Hee-Yeol Lee),고태영(Tae-Young Ko),곽동훈(Dong-Hoon Kwak),김재형(Jae-Hyung Kim),김주호(Joo-Ho Kim),오승진,이태윤(Tae-Yoon Lee),박상민(Sang-Min Park),이승호(Seung-Ho Lee) 대한전자공학회 2019 대한전자공학회 학술대회 Vol.2019 No.6

In this paper, we propose a program to identify 14 parking status in a parking lot using a high resolution 360° camera of 12M. The proposed program consists of three steps: Match with plane image, parking area detection algorithm, and discrimination of parking using learning method. Tests on a model car to evaluate the program to identify 14 parking status in a parking lot using a high-resolution 360° camera of 12M showed 100% accuracy for both parking and double parking. Therefore, the effectiveness of a program to identify 14 parking status in a parking lot using a high-resolution 360° camera of 12M proposed in this paper has been proved.

졸-겔법으로 합성된 폴리이미드/실리카 복합체의 환경적 물성에 관한 연구

박성수,홍성수,이성환,김성완,박재현,김지경,박희찬 한국환경과학회 2003 한국환경과학회지 Vol.12 No.4

Two types of polyimide/silica composite films were prepared using sol-gel method through hydrolysis and polycondensation of tetraethoxsilane(TEOS) with the polyamic acid(PAA) and end-capped PAA solution. Sample were characterized by the means of differential thermogravimetry, X-ray diffractometry, scanning electron microscopy, universal test, impedance analyzer, chemical resistance test, etc. All of the PAA/silanol solutions heat-treated at 300℃ for 6h were transformed to polyimide/silica composites. It has been demonstrated that the properties of polyimide/silica composites were affected by the amount of silica addition and the bond type existed between polyimide and silica.

건강한 성인에서 발병한 칸디다와 연관된 위궤양 1례

박지훈,이상혁,김희,이재호,박성재,지삼룡,양성연,박은택,이연재,설상영,정정명,강미선 白中央醫療院 2005 仁濟醫學 Vol.26 No.1

Fungus such as Candida albicans is a normal flora that is frequently found in the oral cavity, gastrointestinal tract, genitourinary tract, vaginal mucosa in a normal person. However, candida can cause opportunistic infection in an immune compromised host. Candidiasis has broad spectrum of disease from mucocutaneous infection to invasive or disseminated infection. But, it is rarely reported that candida is associaed with gastrointestinal tract disease in a healthy adult. The case of gastric ulcer associated with candida particularly in a health adult is reported with relevant literature.

다제내성 그람양성균에 대한 Linezolid(Zyvox^(�))의 시험관내 항균력 비교

박대원,정희진,엄중식,황병연,김성범,이재갑,이연주,정혜원,정성주,박재형,이진수,손장욱,김우주,김민자,박승철 대한감염학회 2003 감염과 화학요법 Vol.35 No.5

배경 : MRSA, VRE, VRSA같은 다제 내성 그람 양성균의 등장에 따라 glycopeptide를 대체할 새로운 항생제의 개발이 필요하게 되었고 결과적으로 새로운 항생제인 linezolid라는 항생제가 개발되었다. Linezolid는 이전의 항생제와는 다른 새로운 계열의 oxazolidinone으로 경구 이용률이 우수하다. 원내 및 원외감염의 중요한 원인균이 되고 있는 MRSA, VRE에 대한 적절한 경구용 항균제가 없는 국내에서 폐렴 및 피부 연조직 감염에서 경구용으로 사용해 볼 수 있는 약제이다. 본 연구에서는 고대 구로 병원에서 분리된 MRSA, VRE 등을 대상으로 다른 여러 항균제와 비교한 linezolid의 시험관내 항균력을 조사하고자 하였다. 재료 및 방법 : 연구대상은 1998년 1월부터 2000년 12월까지 본원에서 입원 및 외래를 통하여 피부 연조직 감염증 및 호흡기 감염증, 요로감염증으로 진단된 환자들의 가검물로부터 분리된 MRSA 60균주, VRE 43균주, PRSP 25균주를 액체배지 또는 한천배지 희석법을 통하여 linezolid 및 기타 항균제에 대한 최소발육억제농도를 구하였다. 결과 : 실험에 사용한 S. aureus는 모두 MRSA였고 이들은 linezolid에 대해 MIC_(90) 2㎍/㎖(MIC 범위 1-2㎍/㎖), Enterococcus spp는 모두 VRE로 linezolid의 MIC_(90)은 2㎍/㎖로 MIC 범위는 1-4㎍/㎖였다. 한 개의 균주에서 MIC 4㎍/㎖로 중등도 감수성을 보였으나 MIC breakpoint가 (8㎍/㎖인 내성균주는 없고 모두 감수성을 보였다. S. pneumoniae의 경우 penicillin 내성이었고, linezolid MIC_(90) 1㎍/㎖ (MIC 범위 0.5-1㎍/㎖)로 전부 감수성을 보였다. 결론 : Linezolid는 MRSA를 위시한 VRE, PRSP 등의 다제 내성 그람 양성균에 대하여 우수한 시험관내 항균력을 보임을 알 수 있었다. Background : The emergence of multi-drug resistant Gram-positive cocci, such as MRSA, VRE, and VRSA, necessitated to develop new antibiotics, which could replace the glycopeptide. As a result, a new antibiotics named linezolid was developed. Linezolid is different line of oxazolidinones with a good oral bioavailability, compared to other antibiotics. Since appropriate oral antibiotics are not presently available for MRSA, which is a major cause of nosocomial and community acquired infections, the introduction of linezolid will have favorable effect on treatment of infections such as pneumonia or skin infections. In this study, we investigated the antibiotic effect of linezolid on MRSA and VRE isolated from patients who were treated in Korea University Guro Hospital. Material and Methods : By using broth microdilution and agar dilution method we measured minimum inhibitory concentration (MIC) with sixty S. aureus, forty three Enterococcus spp., and twenty five S. pneumoniae isolates from patients who were diagnosed as skin, soft tissue, respiratory, and urinary infections in Korea University Guro Hospital from January, 1998 to December, 2002. Results : All of S. aureus used in this study were MRSA, and MIG_(90) of linezolid was below 2 ㎍/㎖ (MIC ranged between 1-2 ㎍/㎖). All of Enterococcus spp. were VRE, and had MIG_(90) of 2 ㎍/㎖ (MIC ranged between 1 to 4 ㎍/㎖). One of the VRE showed intermediate susceptibility with MIC of 4 ㎍/㎖. However, none was resistant with MIC breakpoint above 8 ㎍/㎖. All of S. pneumoniae were resistant to penicillin, but they were susceptible to linezolid with MICao of 1 ㎍/㎖(MIC range 0.5-1㎍/㎖). Conclusion : In conclusions, linezolid has an excellent in vitro antibiotic effect on multi-drug resistant Gram-positive cocci, such as MRSA, PRSP, and VRE.

만성 위염전 2 례

박찬규,이동욱,남성진,김추성,조성래,구본천,박영재,허규찬 啓明大學校 醫科大學 1997 계명의대학술지 Vol.16 No.3

위염전은 위의 비정상적인 회전으로 생기는데 급성증에서는 진단이 늦어질 경우 치명적일 수도 있으나, 만성증의 경우는 비특이적 위장관 중상을 나타내며, 치료되지 않을 경우 수년 동안 증상이 지속될 수도 있다. 최근 저자들은 소화불량, 식후 상복부 동통을 주소로 내원한 환자에서 만성위염전 2 례를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Gastric volvulus is an abnormal rotation of the stomach. Gastric volvulus may present as an emergency or as a chronic condition. Acute volvulus si potentially lethal if unrecognized, while a chronic volvulus may cause symptoms for years if not treated. Gastric volvulus may be more common than previously estimated. Approximately 700 cases have thus far been documented. In patients with vague upper abdominal pain, bloating, vomiting, early satiety and weight loss, chronic gastric volvulus are reported and the related literature reviewed. The clinical presentation, diagnosis, and treatment are treatment are discussed. Features of acute and chronic volvulus are compared.

Effect of Mn and C on Age Hardening of Fe–Mn–Al–C Lightweight Steels

Sung‑Won Park,Jun Young Park,Kyong Mox Cho,Jae Hoon Jang,Seong‑Jun Park,Joonoh Moon,Tae‑Ho Lee,Jong‑Ho Shin 대한금속·재료학회 2019 METALS AND MATERIALS International Vol.25 No.3

The effects of Mn and C content on the age hardening of Fe–Mn–Al–C lightweight steels, which have austenitic or duplex(austenite and ferrite) microstructures, were investigated. An increase in Mn content induced a delay of the age hardeningthat is caused by the formation of intra-granular κ-carbides. In order to interpret the effect of Mn content, first-principlescalculations were conducted using the supercells of Fe24Al8C8,Fe24Al8C7,Fe24(Al7Mn)C8, and Fe24(Al7Mn)C7. The calculationsshowed that an increase in Mn content could be the source of the delay of the intra-granular κ-carbide formation bysuppressing C atom’ occupation of the vacancy at the body-centered site of L12. An increase in C content accelerated theformation of intra-granular κ-carbides, which induced the intense age hardening, and coarse inter-granular κ-carbides, whichresulted in significant decrease in impact absorbed energy due to inter-granular fracture.

연령증가에 따른 혈압요소들의 좌심실비대 및 관동맥질환과의 관련성

박재석,박창규,박미영,박재형,김용현,나진오,신성희,서순용,홍순준,박성미,임홍의,김응주,서홍석,오동주,노영무 대한순환기학회 2004 Korean Circulation Journal Vol.34 No.2

소음 노출 남성 근로자에서의 청력저하와 혈청 마그네슘의 관련성

박완섭,이종영,정상재,유재영,최태성,홍성철,노성찬 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.1

목적 : 본 연구는 소음에 노출된 남자 근로자를 대상으로 장기간 소음 폭로가 혈청 마그네슘의 농도와 관련이 있는지를 검정하고 이러한 혈청 마그네슘의 농도가 또한 청력저하와 관련이 있는지를 파악하기 위하여 수행되었다. 방법 : 소음에 노출되는 178명의 연구대상자를 청력저하의 정도에 따라 세 그룹으로 분류하고, 구조화된 설문, 신체계측, 혈액검사 등으로 청력저하에 대한 감수성 요인과 혈청 마그네슘 등을 수집하고 측정하였으며, 대상자들의 청력 역치를 측정하기 위하여 청력검사를 실시하였다. 결과 : 본 연구의 결과를 요약하면 다음과 같다. 첫재, 청력저하에 관련된 개인의 감수성 인자라고 알려진 변수인 흡연유무, 나이, 혈압, 헤마토크리트, 콜레스테롤, 혈당 중에서 나이, 이완기 혈압이 단순분석에서 세 그룹간에 차이가 있었고(p〈0.05), 혈청 마그네슘의 농도 또한 세 그룹간에 통계적으로 유의한 차이가 있었으며(p〈0.05) 청력저하가 심할수록 혈청 마그네슘 농도는 낮아지는 경향을 보였다. 둘째, 그룹간의 소음 노출력은 차이가 있었지만 (p〈0.05) 청력보호구 착용상태에는 유의한 차이가 없었다. 셋째, 혈청 마그네슘 농도에 영향을 줄 수 있는 변수인 소음 노출 기간, 마그네슘 함량이 많은 음식의 섭취정도, 스트레스 수준 중에서 소음 노출기간이 혈청 마그네슘 농도와 유의한 상관관계를 보였고(p〈0.05) 노출기간이 길수록 마그네슘의 혈청농도는 낮아지는 경향을 나타내었다. 넷째, 주파수별로 청력저하와 관련된 감수성 요인들에 대한 다중회귀분석 결과 주파수 1,000 Hz에서는 연령이 좌,우측 귀 모두에서 유의한 변수로 채택되었으며 (p〈0.05), 연령이 증가할수록 청력저하가 심해지는 경향을 보였고, 주파수 4,000 Hz에서는 확장기 혈압, 소음 노출 기간, 혈청 마그네슘 등이 청력저하에 대한 감수성 요인으로 채택되었으며(p(0.05), 이완기 혈압이 높을수록, 소음노출 기간이 길수록, 혈청 마그네슘의 농도가 낮을수록 청력저하가 심해지는 것으로 나타났다. Objectivea : This study was conducted to investigate that the chronic noise exposure is associated with decreased serum magnesium concentrations and evaluate whether decreased serum magnesium is associated with noise induced hearing loss. Methods : One hundred seventy-eight male workers exposed to noise were selected and classified three groups by the degree of hearing loss. Hearing threshold levels were less than 30 dB at 1,000 Hz or less than 40 dB at 4,000 Hz In group I, more than 30 dB at 1,000 Hz or more than 40 dB at 4,000 Hz and 15 dB and less of pure tone average[PTA : (500 Hz+l,000 Hz+2,000 Hz)/3] in group II, more than 30 dB at 1,000 Hz or more than 40 dB at 4,000 Hz and over 15 dB of PTA in group III. Results : Serum magnesium concentrations were 2.42±0.26 mg/dl in group 1, 2.35±0.23 mg/dl in group n , 2.26±0.24 mg/dl in group II, respectively and significantly differ-ent between group I and group III (p〈0.01). It was negatively correlated with duration of the noise exposure as correlation coefficient (r) of -0.194 (p(0.05) . Analysis of the multipleregression on hearing threshold levels showed that serum magnesium, diastolic blood pres-sure, duration of the noise exposure were statistically significant at 4,000 Hz (p(0.05) . While only age was statistically significant at 7,000 Hz (p(0.05) . Conclusions : These results suggest that chronic noise exposure may induces decreasein serum magnesium concentrations and that its decreased concentration is related with noise induced hearing loss.

양주 노고산(老姑山) 독재동(篤才洞)의 장소성과 역사문화경관 해석

노재현 ( Jae Hyun Rho ),김화옥 ( Hwa Ok Kim ),이정한 ( Jung Han Lee ),박주성 ( Joo Sung Park ) 한국전통조경학회 2015 한국전통조경학회지 Vol.33 No.1

본 연구는 경기도 양주시 장흥면 삼하리 독재동 바위글씨와 노고산의 장소성에 주목하여, 이곳의 경관 및 장소특질을 고찰하고 바위글씨에 담긴 경관의미를 추론함으로써 노고산과 독재동 계곡의 역사문화경관적 함의를 밝히고자 한 것으로 연구 결과는 다음과 같다. 삼각산은 조선왕조 6백년 도읍지의 주산(主山)이며 오악(五嶽)을 이루는 중앙의 성산(聖山)으로, 노고산은 삼봉산(三峰山)즉 삼각산의 우람한 세봉우리를 향배하는 의미공간으로서 그 장소성이 획득된다. 더불어 노고산은 조선의 정기를 상징하는 삼각산을 가장 완벽하게 조망할 수 있는 ‘망삼각산(望三角山)’의 절대 시점장이다. 독재동 계곡에 산포(散布)된 다수의 바위글씨는 미수 허목의『고양산수기』의 내용을 현현(顯現)하기 위한 행위이자 경물로 재생산된 산물이다. 그리고 추사 필적의 몽재(夢齋)는 중의적(衆意的) 표현이 읽혀지는 바위글씨로, 먼저 글자 그대로의 뜻인 ‘꿈꾸는 집’ 이지만 내면적 의미는 “한낮 몽상(夢想)도 바탕을 깊이 헤아려 보면 정당성이 확보된다.”는 의미로 ‘몽재거사’로 알려진 성재(性齋) 허전(許傳)의 『몽재집(夢齋集)』서(序)의 내용으로 보아 성재의 독재동 거주와 관련된 징표로 추정된다. 또한 몽재라 쓴 바위 하단의 갑자(甲子)·경오(庚午)·무술(戊戌)·갑인(甲寅) 등의 간지(干支)는 추사와의 교유관계가 있는 1804년 5월생 유생(儒生)의 사주팔자로 판단된다. 노고산과 독재동 계곡은 삼각산을 조망하는 장소일 뿐 아니라 송월재·성재 등 미수의 학통을 계승한 기호지역의 남인학자의 공통된 장구지소로써의 응집력을 보여준다. 또한 이곳에 각자(刻字)된 추사체와 미수체(전서체) 바위글씨는 우리나라 서예사의 큰 흐름을 함축적으로 보여준다는 측면에서도 매우 의미 깊은 역사문화경관이다. This study was focused on the placeness of Nogosan Dokjae-dong and rock inscription located in Jangheung-myeon, Yangju-si, Gyeonggi-do. The purpose was to reveal the implication of Nogosan and Dokjae-dong Valley in terms of Historic cultural landscape by considering the characteristics of the place and its landscape, and inferring the significance of the letters engraved on the rock. The result is as follows.10)Samgaksan is one of the five famous mountains in Korea. It is the sacred mountain that stands behind the capital city of the Joseon Dynasty that lasted for 600 years. On the other hand, the placeness of Nogosan is significant since it was the place where people used to bow low to the three great summits of Samgaksan. Furthermore, Nogosan was the perfect place to view Samgaksan that represented the Joseon spirit.Many letters were engraved on the rocks around Dokjae-dong Valley by Misu(眉수) Heo Mok(許穆) as part of his memories to describe his experience in the mountain and became a scenery. Chusa(秋史) Kim Jung-Hee(金正喜) also engraved letters of ``Mongjae`` on the rock that contains a double meaning. Literally, it means ‘a dreaming house’ However, it also implies that even just a daydream is significant in a way. These letters are presumed to be the signs that are related to Sung-Jae(性齋) Heo Jeon(許傳)’s experience in Dokjae-dong since the letters were part of his famous book title. Below these two letters, Chusa also engraved letters that describe the sexagenary cycle including the year of the rat, horse, dog, and tiger. They are regarded as the letters that describe the fate of Chusa’s friend, a scholar born in May 1804. Nogosan and Dongjae-dong Valley are very significant in terms of historic cultural landscape as a viewpoint to see Samgaksan; and a place that cherishes the traces of Misu and shows common values and cohesiveness of well-known scholars of the Joseon Dynasty including Song Wol-Jae(松月齋) and Sung-Jae as a of Gihonamin(畿湖南人). The engraved letters of Chusa and Misu also implicitly demonstrates the major trends of Korea’s calligraphy history.