북한산국립공원의 계류수질 보전 전략(I)

박재현,우보명,김우룡,안현철,조현서,추갑철,김춘식,최형태,Park, Jae-Hyeon,Woo, Bo-Myeong,Kim, Oue-Ryong,Ahn, Hyun-Chul,Cho, Hyun-Seo,Choo, Gab-Chul,Kim, Choon-Sig,Choi, Hyung-Tae 한국환경복원기술학회 2001 한국환경복원기술학회지 Vol.4 No.3

This study was conducted to investigate physicochemical property changes from July 1998 to August 2001 in Mt. Bukhansan National Park. Four water sampling points were selected to measure the quality of stream water in the northeastern part of the Mt. Bukhansan National Park. The results were summarized as follows; In spring, the average pH of stream water was below the first class of the river water quality standard, while it was normal level in summer. The average electrical conductivity was about 2.3~3.3 times higher in downstream water than in upstream water during spring and summer. The contents of anions($Cl^-$, $NO{_3}^-$, $SO{_4}^{2-}$) were about 1.1~7.4 and 0.4~11.4 times higher in downstream than in upstream water, respectively. These results indicate that water quality was poorer in downstream than in upstream water. We suggest that stream water in the Mt. Bukhansan National Park should be protected from impacts of snow melting mineral particles in spring season and human impacts like wastewater of point source in summer season.

Distribution of the Fairy Pitta (Pitta nympha) in the South Korea: A focus on protected areas

Gil-Pyo Hong(홍길표),Jae-Hoon Kim(김재훈),Seul-Gi Seo(서슬기),So-Yeon Cho(조소연),Bo-Yeon Hwang(황보연),Jong-Hyun Park(박종현),Seung-Yeon Lee(이승연),Ga-Young Kim(김가영),Wan-Hee Nam(남완희),Ha-Cheol Sung(성하철) 한국조류학회 2021 한국조류학회지 Vol.28 No.2

국내 팔색조(Pitta nympha) 분포 현황을 알아보고자 전국 국립공원 등 보호지역 중심으로 총 19개 지역을 조사하였고, 전문가 네트워크를 통해 자료를 보강하였다. 전국 19개 지역을 조사한 결과 북한산, 지리산 등 내륙지역 7개 국립공원에서는 팔색조가 확인되지 않았고, 경남 거제, 남해, 해남, 장흥 고흥 등 남해안과 인접한 12개 지역에서 팔색조 서식이 확인되었다. 또한 전문가 네트워크를 통해 수집한 팔색조 출현 위치 정보 82건을 분석한 결과, 전국 8개 광역지자체 모두 팔색조 서식이 확인되었고, 내륙지역(26.8%)보다 해안지역(73.2%)에서 더 많이 출현하였다. 연구 결과를 종합해보면, 우리나라의 팔색조는 주로 제주도와 남해안 지역을 중심으로 많이 분포하며, 그 보다 적은 개체수가 내륙 지역에 넓게 분포하고 있는 것으로 나타났다. The present study investigated the current distribution of Fairy Pitta (Pitta nympha) in South Korea. A total of 19 study areas, including protected areas such as national and provincial parks in South Korea were surveyed, and additional data obtained from an expert network. According to the results, Fairy Pitta was absent in seven inland national parks, including Mt. Bukhan and Chiri parks. Fairy Pitta inhabited 12 areas near the southern coast of South Korea, including Geoje, Namhae, Haenam, Jangheung, Goheung, and Gyeongnam Province. The analysis results of 82 datasets obtained from experts with regard to the locations where Fairy Pitta have been spotted showed that the bird inhabits all the eight metropolitan regions in South Korea, and is more frequently spotted in coastal areas (73.2%) than in inland areas (26.8%). The findings demonstrate that Fairy Pitta is mainly distributed in Jeju Island and the southern coast of South Korea, and is distributed in inland areas at relatively lower numbers.

서초동(서울시 서초구)의 거미상

김주필(Joo Pil Kim),정혜리(Hye ri Jeong),김대희(Dae Hee Kim),박동우(Dong Woo Park),서재웅(Jae Woong Seo),이현우(Hyun woo Lee) 한국거미연구소 2017 한국거미 Vol.33 No.1

2016년 3월 31일부터 7월 31일까지 서울특별시 서초구 서초동에 위치한 서울고등학교 교정 일대를 서울고등학교 환경생물부 부원들이 채집 조사한 결과 20과 43속 53종의 거미가 조사 연구되어 이에 보고하는 바이다. From March 31st to July 31st in 2016, members of an environmental biology club at Seoul High School located in Seocho-gu, Seoul, Dae-Hee Kim, Dong-Woo Park, Jae-Woong Seo and Hyun-woo Lee, collected 20 families 43 genera 53 species of spiders and report the result of the study here.

인라인 스케이트 이용자들의 손상 유형과 위험 요인

서혜경,문지영,성주욱,김말영,이준호,박정이,차성화,백나영,이재민,김수민,임현술,정해관,배근량,정철 東國大學校醫學硏究所 2004 東國醫學 Vol.11 No.2

지난 몇 년 사이 인라인 스케이트는 젊은층을 중심으로 인기있는 스포츠가 되었으며 이러한 대중화와 더불어 인라인 스케이트와 관련된 사고 빈도도 증가하는 추세이다. 따라서 본 연구는 인라인 스케이트 이용에 따른 사고율과 이용습관 형태, 손상 유형 및 위험 요인을 알아보고자 시행되었다. 2003년 9월 14일부터 9월 24일까지 경주시 ○○초등학교 6학년, ○○중학교 1학년, ○○여자고등학교 1학년, ○○고등학교 1학년, 동국대학교 의과대학 의학과 학생, 경주황성·포항 해맞이 공원의 성인을 포함한 총설문 대상자 1,305명 중 인라인 스케이트 이용자 392명을 대상으로 단면 연구를 수행하였다. 조사에 앞서 병원 방문과 사전 조사를 시행 하였으며 자기 기입식 설문지를 통해 정보를 수집하였다. 초, 중, 고 인라인 스케이트 전체 이용률은 28.1% 사고율은 30.1%로 나왔으며 주로 젊은층에서 사고가 많았으며 나이가 증가할수록 빈도가 증가하였다. 보호 장비 착용률은 44.4%로 조사되었다. 손상 부위로는 무릎과 상지 부위가 많은 것으로 조사되었으며 손상 유형은 찰과상과 타박상이 많았다. 스케이트를 타기 시작한지 1개월 이내에서 사고를 가장 많이 당한 것으로 나타났다. 전체 부상자의 20%가 후유증이 있었던 것으로 나타났다. 본 연구에서 인라인 스케이트 이용자들의 사고율이 비교적 높음을 알 수 있었다. 손상 부위의 무릎 및 상지 집중 현상으로 인해 무릎과 상지 부위의 보호대 착용이 필요할 것으로 생각되며 또한 사고를 줄이기 위해 초기 기술 습득 단계부터 전문가를 통한 체계적 교육과 안전 의식 고양이 필요할 것으로 보인다. In the past several years, Inline skating has become a popular sport among young people. With popularization of Inline skating, the number of injuries has increased proportionately. The purpose of this study is to evaluate the prevalence of injuries, the behaviors of skating, the nature and risk factors of injuries. We conducted a questionnaire an 1,305 subjects from Sep. 14 to 24, 2003. The Inline skaters were 392. These participation were mainly students from ○○elementary school, ○○middle school, ○○women's high school, ○○high school, Dongguk medical school, and adult skaters in several parks. The prevalence of injuries were 30.1%. Injuries were predominant from younger age and frequencies were increased according to increasing age. The most common location of injuries were both knee and the upper extremities. Most of injury type were skin abrasion and contusion. Injuries were highest within one month after First skating. 20% of injuries experienced a sequela. The results of this study show the severity of Inline skating-related injuries. We expect that the knee and the upper extrimities protectors should be used adequatly. Also to reduce injuries, when the skills are obtainded, the specilized learning programs and safety awareness are needed.

이차함수의 효율적인 지도방안 : 중학교 3학년을 중심으로 For the third grade of middle school

朴順喆,徐玹珠 조선대학교 사범대학 부설 교과교육연구소 1999 敎科敎育硏究 Vol.2 No.1

Pilomatricoma 환아에 대한 증례 보고

서현우,김지혁,박호원 大韓小兒齒科學會 2004 大韓小兒齒科學會誌 Vol.31 No.1

Pilomatricoma(Calcifying epithelioma of Malherbe)는 모낭 세포 기원의 양성 연조직 종양으로, 보통 머리와 목 부위에 나타나며, 20세 이전의 여성들에게서 호발하고, 악성으로의 전이가 보고되기도 하나, 이는 극히 드물다. 임상적으로, 무통성, 표재성, 고형성이며 종종 적청색을 나타내고, 크기는 보통 0.5~3.Ocm 정도로 다양하게 나타난다. 조직학적으로, 세포기질 내에 상피조직이 존재하는 형태이며, 상피조직에서는 기저제포(basaloid cell)와 유령세포(ghost cell)가 특징적으로 나타나고, 세포내와 기질내 석회화가 종종 관찰되기도 한다. 진단은, 초진시 고형 물질의 촉진으로 병소를 의심해볼 수 있고, 조직병리학적 검사로 확진할 수 있다. 감별진단으로는 아가미낭(branchial cyst), 혈관종(hemangioma), 횡문근육종(rhabdomyosarcolna), 표피포함낭(epidermal inclusion cyst), 모낭(pilar cyst), 이하선 종양(parotid gland tumor), 피부의 골종(osteomas of the skin) 림프절의 석회화(calcified lymph nodes), 죽종(atheromas) 등이 있다. 치료로는 외과적 절제술이 추천되며 재발은 드물다. 본 증례는 우측 하악각 부위에 결절이 촉진되는 6세 여자 환아에게서 임상 검사와 방사선 검사 후 병소의 외과적 절제술을 시행하였으며, 조직병리학적 검사를 통해 pilomatricoma로 확진되었고, 양호한 치료 결과를 얻었기에 이에 보고하는 바이다. Pilomatricoma is a benign soft tissue tumor of hair follicle origin. They occur most commonly in the head and neck region and are usually found in girls during the first two decades of life. Although malignant transformation has been described, it is exceedingly rare. The clinical presentation is typically that of an asymptomatic, superficial, solitary, firm mass that is often accompanied by a reddish-blue discoloration of the overlying skin. Histopathologically pilomatricoma are seen as epithelial islands embedded in a cellular stroma. The epithelial component consist of two main cell types : basaloid cells and ghost cells. Intracellular and stromal calcification is reported in many cases. Diagnosis is usually suspected based on palpation of a superficial, rock-hard mass and confirmed by histopathologic examination. Surgical excision is both curative and the treatment of choice. Recurrence is rare. In this case, the radiographs showed a dense calcification, measuring about 1cm diameter. So simple excision was performed intraorally, and resultantly the lesion was proved to be a pilomatricoma by histological examination.

용매-물-1-프로판올계의 액-액 평형

박동원,정상훈,신현심,서진기,이진우 동아대학교 공과대학부설 생산기술연구소 1997 生産技術硏究所硏究論文集 Vol.2 No.1

Due to the rising cost of energy, new separation processes based on extraction are becoming more attractive than before. Thus, the need for calculating and predicting liquid-liquid equilibria(LLE) compositions has very much increased. The purpose of this study is to determine the binodal curves, tie lines, plait points and selectivity for the temary systems of 1-propanol-water with toluene, ethyl-acetate, 1-butanol, n-hexane and amyl alcohol as solvent and also for the quarternary solvent-NaCl salt solution-1-propanol systems at 25℃.

그레꼬-로만형 競技時 Ground, Stand 技術의 內容分析

박현서,안길영,신범철 韓國體育大學校附屬 體育科學硏究所 1996 韓國體育大學校附屬 體育科學硏究所論文集 Vol.15 No.1

The purpose of this research was to analyze the content of 50 wrestling games in case of stand technique and ground technique. The subjects were 100 Greco-Roman style wrestlers classified by weight who took part in wrestling world championship match and korean championship selection match in 1994. The frequency of skill trial and skill success according to different weights and different weight classes(the light weight class, the middle weight class, and the heavy weight class) were recorded cumulatively in check-list form. Their mean and standard deviation(mean±SD) were calculated. χ² verification was applied to the frequency of significance items and one-way ANOVA to score and score rate. The results are as follows ; 1. Conclusion 1) The results of χ² and ANOVA verification had a significant difference among skill variants according to different weights (1) The mean and standard diviation and χ² verification of skill frequency shows that there is statistically significance in case of SS1(χ²=54.1) in stand technique and GS1(χ²=42.2) in ground technique. (2) in verification of skill success, only SS1 in stand technique shows statistically significance(x2=17.8), but ground technique shows no significance among different skills. (3) The ANOVA of 1 game scoring indicates that there are significance in case of SS1, SS2, SS5, SS7, SS8, SS9 in stand technique and GS2, GS4 in ground technique. (4) From ANOVA of success rates according to different skill types, it is showed that only GS4 shows statistical significance x2=20.0 in ground technique, but there is no significance among other skills in ground technique and among skills in stand technique. (5) In ANOVA of score rae according to skill types, SS1 in stand technique has statistically significance but ground technique shows no sigmificance among skills. These results indicate that score rate of stand technique is higer that of ground technique. (6) In verification of skill trial according to different skill classes(skills in stand technique and skills in ground technique), neither stand technique nor ground technique. (7) In verification of skill trial and success according to different skill classes, ghere is no significance between stand technique and ground technique. (8) ANOVA of scoring according to different sill classes also shows no significance between stand technique and ground technique. 2) The results of x2 and ANOVA verification of skill variants according to defferent weight classes(the light weight class, the middle weight class, and the heavy weigt class) (1) The verification of skill trial tells us that SS1(x2=16.7), SS2(x2=17.5) have statistically significance in case of stand technique and GS2(x2=23.4), Gs5(x2=12.83) in case of ground technique. (2) In ANOVA of skill trial, only SS1 in stand technique shows statistically significance but there is no significance among other skills in stand technique and among skills in stand technique. (3) In ANOVA of scoring accoding to skill types, SS1, SS2, SS5, SS7, SS8 show statistically significance in stand technique and GS2, GS5 in ground technique. (4) In verification of skill trial according to different skill classes(Skills in stand technique and skills in ground technique), there is no significance between stand technique and ground technique. (5) Verification of skill succes according to different skill classes shows no significance between stand technique and ground technique. (6) ANOVA of scoring according to different skill classes also shows no significance between stand technique and ground technique. 2. Suggestion 1) Score rates are higher in ground technique than in stand technique, so coaches should take it into cosideration when they distribute the two techniques. 2) Study about spiritual strength in terms of wrestling is required. 3) In skill coaching of Greco-Roman style Wrestling, it is suggested that coaches direct various skills by small skill-centred approach to get ground technique rather than high scoring by big skill-centred approach. 4) It is required to develop prograns that will characterize progessional weight and professional skills.

ZigBee를 이용한 저전력 텔레매트리 연구

서민석,이호응,박현주 한밭대학교 2004 한밭대학교 논문집 Vol.21 No.-

This paper presents the method to apply ZigBee communication technologies to existing telemetry. ZigBee communications aim at low power consumption wireless communication. Telemetry is become more efficient by taking advantage of ZigBee communication. We measured the basic capacity of battery. And through the study of using more efficient electric power we study the implementation methods of telemetry to be able to communicate based on ZigBee for a long time.

휴대 장치를 위한 Layered Transmission에 관한 연구

박노경,서상진,진현준 湖西大學校 工業技術硏究所 2005 工業技術硏究所論文集 Vol.24 No.-

Mobile multimedia services have rapidly evolved in the areas mainly including cell phones. Due to the increment of data traffic, processing load of server systems, network congestion and response time of clients also increase constantly. In this paper, a layered transmission technology is proposed of which the size of requested stream from clients has reduced and its performance is evaluated through the simulation. The layered transmission decreases data traffic to 78.5% averagely by converting format of data source in accordance with the playback performance of mobile devices. It is analyzed that decrement of streaming data size depends on EFS, resolution of LCD screen, and bytes per pixel. For real applications, layered transmission consists of modules based on filters using the Directshow considering portability, scalability, and reusability.