지상라이다를 이용한 미기록 외래종 갯쥐꼬리풀(Spartina Alterniflora)의 분포특성과 관리방안 연구 -다도해 해상국립공원 진도 남동리 해안을 사례로-

박정원 ( Jung Won Park ),김하송 ( Ha Song Kim ),장성건 ( Seong Geon Jang ),천숙진 ( Sook Jin Chun ),육관수 ( Kwan Soo Yuk ) 한국도서학회 2015 韓國島嶼硏究 Vol.27 No.3

갯쥐꼬리풀(Spartina alterniflora)은 북미 대서양 연안 뉴펀들랜드, 캐나다 남쪽에서 아르헨티나 북부의 갯벌이 원산이며, 생장이 강한 특성으로 세계의 기수지역과 해안에서 생태공학적 용도로 도입된 바 있다. 그러나 매우 빠르게 갯벌을 피복하여 자생종의 생장을 방해하고, 염습지 종다양성을 감소 시켰고, 결과적으로 과다생육으로 갯벌 무척추동물의 서식지를 잠식해 사라지게 하여 무척추동물을 먹이로 하는 조류 또한 생태계 내에서 감소키는 등 많은 환경문제를 야기 시켰다. 우리나라에서는 2008년 전후에 다도해해상국립공원에 유입된 것으로 판단된다. 현재 다도해해상국립공원 남동리 해안에서 분포하고 있는 갯쥐꼬리풀(Spartina alterniflora)군락은 습지내 총 6개의 염생식물 군락면적(8,487.7㎡) 중 75.34%의 비율(6,394.86㎡)로 분포하고 있다. 또한 2008년에 11.54㎡ 이던 분포 면적이 2015년 현재 약 550배가 늘어난 6,394.22㎡로 조사되었고 생육지 고도 범위인 0.69m~1.1m를 요인 값으로 두고 GIS 분석한 하였다. 그 결과 앞으로 확산 될 예상 면적은 12,584㎡이며 현재보다 약 6,189.14㎡가 늘어날 것으로 예측되며 우리나라에서도 역시 확산이 빠르고 넓게 늘어날 것으로 판단된다. 향후 계속 분포역이 확대 될 것으로 예상하고 관리방안을 위하여 시범 연구를 실시하였다. 갯쥐꼬리풀군락 중 일부를 첫 번째는 뿌리째 뽑아내기와 두 번째 지상부 제거 후 포장덮기 방법 등 국외사례의 문헌을 바탕으로 방재를 실시하였으나 전체 면적을 방재하기에는 많은 인력과 시간 그리고 예산이 소요되므로 다각적인 방안을 강구하여야 한다. Spartina alterniflora is native to the Atlantic coast from Newfoundland, the south of Canada and northern Argentina. There it forms a dominant part of brackish coastal saltmarshes. Due to its strong growth, the Spartina alternifolra was introduced to the rider area and coast as a use for ecological engineering. The Spartina alterniflora community can crowd out native species, reduce the biodiversity of saltmarsh and alter the environment. As a result, the invertebrates living in mud flats disappeared due to the encroaching of Spartina alterniflora, and the birds which eat off invertebrates went along as well. The Spartina alterniflora was first introduced in South Korea in 2008 and is known to have flowed in the Dadohaehaesang National Park. Compared to 2008, in 2015 the distribution area of the Spartina alterniflora has increased 550 times. (11.54㎡ in 2008 to 6,394.22㎡ in 2015). The large increase of Spartina alterniflora calls for urgent management and additionary study on the subject. Thus, this study analyzed the geo-spatial information on the Spartina alterniflora such as its distribution area, the height of habitats and expected expansion area, and can act as the preliminary data for management.

웨이브릿 변환 영역 적응필터에 의한 유한 임펄스 응답 필터시스템 확인

박순규,박남천,이수흠 慶南大學校 附設 工業技術硏究所 1998 硏究論文集 Vol.15 No.2

기존의 시간영역직 접형 유한 임펄스 응답 적응필터는 그 구조가 매우 간단하기 때문에 여러 분야에 응용되고 있으나, 이 적응필터는 일반적으로 수렴률이 매우 늦다. 변환영역 적응필터는 적응 알고리듬의 수렴속도 증가를 위해 유익하게 사용된다. 웨이브릿 변환은 프로세스가 비정적인 경우에도 Karhunen-Loeve변환과 매우 유사하다. 그러므로 웨이브릿 변환된 출력의 자동상관 마트릭스는 거의 대각이며, 변환 영역에서 간단한 전처리를 하면 수렴률을 매우 향상시킬 수 있다. 또한 변환에 Harr 웨이브릿을 이용하면 곱셈없이 변환이 가능하다. 이 논문에서는 웨이브릿 변환 영역 적응필터를 구성하고, 이를 유한 임펄스 시스템 확인에 적용하였다. 컴퓨터 시뮬레이션 결과를 DET 영역 적응 유한 임펄스응답 적응필터에 의한 결과와 함께 나타내었다. The conventional time domain direct-form FIR filter has been used for a variety of application, since it presents a very simple implemention, however, in general, the convergence rate of this adaptive filter is very slow. The transform domain adaptive filter can be used advantageously to increase the speed of convergence of the adaptive algorithm. The wavelet transform behaves as a good approximation to Karhunen-Loeve(KL) transform even when the underlying process is nonstationary. Therefore, the autocorrelation matrix of the wavelet transformed output is nearly diagonal. By using a simple preconditioning in the transformed domain, the conditioning can be improved resulting in dramatic increase in the convergence rates. And by using the Harr wavelet, we can transform without multiplication arithmetic. In this paper, a wavelet transform domain adaptive filter has been constructed and applied to the FIR filter system identification. Computer simulation results are shown with the results obtained by the DFT domain adaptive FIR filter.

N値에 따른 地盤評價에 關한 硏究

박은규,류제천,김송만,박춘수 忠南大學校 産業技術硏究所 2002 산업기술연구논문집 Vol.17 No.1

In this paper, parameters of soil which are estimated with N-value and the results from laboratory test with the sample in construntion field are compared and analyzed. As a result, modification methods caused by existed weight is nearly same with the Equation of Liao & Whitman. Under same existed weight, the difference of N'/N is 0.9~2.1 in the Equation of Peck & Bazzaraa and Gibbs & Holtz. The Equation of O-Ja-Ki (&?'§) is more accurate with average value than any other equations in estimating a angle of internal friction of sand. The result of laboratory test is similar to the Equation of terzaghi & Peck. When unconfined compression strength of clay is estimated, the equation, q_(u) ≒ N/0.722, may represent many suggested equations. Standard Penetration Test is one of the most popular method to estimate parameters of soil because of its simplicity. Correlation between N-value and parameters of soil has been studied by many people but the absurd is still remain and we can face it on the construction field. Therefore field investigation and understanding about N-value are required when engineers estimate parameters of soil with N-value. There should be more study to get high accuracy of N-value and trustable parameters of soil.

非定常流의 亂流領域에서 오리피스 形狀에 따른 損失 및 流量에 관한 實驗的 硏究

朴春根,徐利洙 東亞大學校 大學院 1984 大學院論文集 Vol.8 No.2

To loss and discharge coefficients of several types of orifices are studied experimentally for Reynolds numbers for 10⁴to 10?, and square-edged and sharp-edged orifices are varied thickness and angle of inclinations. experimental results, for thickness front direction of flow scarcely ever be varied loss and discharge coefficients, but back direction of flow are changed loss and discharge coefficients when angle of inclination are varied, for back direction of flow if angle of inclination be increased, loss coefficients be decreased and discharge coefficients be increased.

면역 부전 환자에서 병발한 급성 황색 포도상 구균에 의한 세균성 식도염 1예

박환양,김춘관,박영배,박재완,김성훈,강정원,문경협,양수현,변종훈 대한감염학회 2001 감염 Vol.33 No.5

Bacterial esophagitis is an uncommon disease and has not been well characterized. Bacterial infection of the esophagus is usually presented as a superimposed infection upon a preexisting viral or fungal esophagitis and most patients are immunocompromised hosts. A 67-year-old man was admitted for retrosternal pain and hematemesis, who had a past history of long-standing diabetes mellitus and end stage renal disease, also had a history of steroid medication. Extensive esophageal ulcerations of the mucosa were visualized by endoscopy. Staphylococcus aureus grew in blood culture. After the 2 weeks of antibiotics treatment, he was successfully recovered without any sequelae. Due to its rarity, this case is herein reported with a review of the corresponding literature. (Korean J Infect Dis 33:360∼363, 2001)

시뮬레이션을 이용한 광주광역시 지하철 운영계획에 관한 연구

전태웅,박수희,이항진 조선대학교 환경공해연구소 1999 環境公害硏究 Vol.15 No.2

This study is concerned with the operation planning in Kwang-ju subway. The operation planning in subway that one is electronic car operating interval time, one other is the number of trailer car. The evaluation criteha of alternatives is average queue time of passenger and the degree of congestion in the trailer car. The alternatives of operating planning and the experiment of alternatives is presented in this paper by simulation with ARENA. The results of experiments, electronic car operating interval time is 3.5 minutes and the number of trailer car is four in 2004 year.

미용사들의작업관련성 근골격계 장애에 관한 연구

박수경,최영진,문덕환,전진호,이종태,손혜숙 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.3

목적 : 미용사의 작업관련 근골격계 장애 실태와 관련 요인을 알아보고자 한 것이다. 방법 : 최종 대상이 된 미용사 267명에 대하여 2000년 3월부터 5월까지 Karasek의 J7Q와 N10SH의 표준화 설문지를 이용하여 일반적 특성, 직무관련 스트레스, 근골격계 장애 자각증상 등을 자기 기입식으로 작성하게 하였다. 결과 : N10SH 감시기준에 의한 근골격계 자각 증상 호소율은 전체적으로 94.4%으로 높은 편이었으며, 각 신체부위별로는 어깨 부위(61.0%), 목 부위(59.9%), 허리 부위(53.2%), 손 및 손목 부위(41.6%)의 증상 호소율이 비교적 높게 나타났으며, 상대적으로 무릎 및 허벅다리 부위(36.7%), 발 및 발목 부위(34.8%), 등 부위(28.8%), 팔 및 팔꿈치부위 (28.5%), 종아리 부위 (28.5%), 손가락 (22.8%) 등은 낮았다. 다변량 분석 결과, 미용사들의 WRMDS는 직무 스트레스와 건강관련 습관 등에 영향을 받은 것으로 관찰되었으며, 부위별로 목부위는 직무의 불안정성, 허리부위는 여자, 음주, 결정의 허용범위, 손 및 손목부위는 음주, 무릎 및 허벅다리 부위는 흡연, 발 및 발목부위는 흡연, 결정의 허용범위, 그리고 등부위는 직무의 불안정성 등이 유의한 요인으로 관찰되었다. 결론 : 주관적인 증상 호소만을 이용한 제한점에도 불구하고 산업보건의 명확한 대상이 되지 않고 있는 미용사 등의 서비스업 종사자에 대한 WRMDS 연구의 기초자료로서 활용될 수 있을 것이다. Objectives : To determine the prevalence and related factors of work related musculoskeletal symptoms in hairdressers. Methods : Informations on general characteristics, job strain, and musculoskeletal symptoms were obtained by a self-administered questionnaire, through adopting NIOSH instrument and JCQ (Job content questionnaire) , from 267 hairdressers, between March and May, 2000. Results : The symptom prevalence by N10SH surveillance criteria in total was high as 94.4%; shoulder (61.0%), neck (59.9%), low back (53.2%), hand and wrist (41.6%), etc. In multiple logistic regression, significant factors affecting the symptoms by body region , job insecurity on neck; gender, alcohol, decision latitude on low back; alcohol on hand and wrist; smoking on thigh and knee; smoking, decision latitude on ankle and foot; job insecurity on upper back. Conclusions : Musculoskeletal symptoms of hairdresser were highly prevalent, and associated with job strain and their health habits. This Is a basic data of work related musculoskeletal disorders among hairdressers who are not the subjects of occupational health service at the present time in Korea.

래크 생산시스템의 생산능력 결정에 관한 연구

전태웅,박수희,이항진 조선대학교 경영경제연구소 1999 經營經濟硏究 = Management and economics research Vol.22 No.2

This study is concern to determine production capacity for rack production system using simulation. In rack production system, generally, the production capacity is determine by the number of operatior and the time of operator, that is decision parameters. The fourth-four alternatives that is eleven alternatives to the number of operator and four alternatives to the quaranty of production is simulated in this study. The overhead cost is decision criteria in the selection to alternatives.

경부 관통상으로 인한 사지 마비 1례

박 진,이경운,김춘호,김성중,조남수,안태훈 大韓應急醫學會 1998 대한응급의학회지 Vol.9 No.3

A case of quadriplegia resulted from cervical penetrating wound was admitted to chosun university hospital intensive care unit, and undergone steroid therapy and antibiotics therapy. On the 6th hospital day, the septic complication was developed and it proved to be bacterial meningitis by CSF examination. Broad spectrum antibiotics was administered immediately after and the diagnosis and the patient was monitored carefully. The bacterial meningitis was improved and no other serious complication was developed. The patient was discharged with permanent neurologic deficit, quadriplegia.

강진만에서 미생물의 년 변화

박종천,오재영,정용욱,주현수,이원교,유춘만,이우범 國立 麗水大學校 환경문제硏究所 2001 環境硏究論文集 Vol.4 No.-

The biological surveys were performed at seven sites in the Gangjin bay from February, 1998 to November, 2001. In order to analysis of environmental variation, numbers of heterotrophic bacteria, general fungus and fecal coliforms were enumerated in each sample. The result showed that variation range of heterotrophic bacteria, general fungus, and fecal coliforms were 2.9 x 10^(3)~9.6 x 10^(3) CFU/ml, 17.2~80.1 CFU/ml, and 6.3~682.5 CFU/100ml for four tears(1988~2001), respectively. Density of heterotrophic bacteria and general fungus were gradually decreased for four tours, while fecal coliforms were suddenly increased. Specially, numbers of fecal colifoms were increased the more 100 times in 2001 than that 1998. We think that it was probably caused a little rainfall in February, 2001. There result suggests that ecosystem of Gangjin bay were mainly regulated by 2~3 factors, which were inflow of fresh water, salinity and variation of water temperature.