http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
활성슬러지 구성 미생물에 의한 폴리오바이러스의 감소 효과
김태동,최동혁,Kim, Tae-Dong,Choi, Dong-Hyuk 한국환경보건학회 2006 한국환경보건학회지 Vol.32 No.4
The biological wastewater treatment system is known to have an important role in reducing the quantify of enteric virus in water environments. To clarify the roles of activated sludge microbes in decreasing the virus infectivity, the behavior of the virus in bacteria, protozoa, and metazoa was examined by pure or mixed culture system using poliovirus type 1(Lsc, 2ab strain). In the bacterial culture systems, the virus infectivity in the liquid phase decreased by a reversible adsorption of the virus to the bacteria or bacterial flocs. On the other hand, in the protozoa and the metazoa culture systems using T. pyriformis and P. erythrophthalma, respectively, with a variety of bacterial strains as prey, the main virus decrease mechanism of reversible adsorption in early stage was changed to irreversible predation, which was not eluted in this study. The virus decrease was more effective in the P. erythrophthalma culture system, which had high predation and floc forming abilities. However, in the mixed culture system of Z. ramigera and P. erythrophthalma, the more rapid reversible adsorption of virus to Z. ramigera flocs preceded the irreversible predation of P. erythrophthalma.
온라인 강의시청 맥락에서 사용자 주도의 컨트롤제한을 통한 인지된 비통제성이 강의 집중에 미치는 영향
김태동(Tae-dong Kim),민병아(Byoung-a Min),이원욱(Won-ouk Lee),박태준(Tae-joon Park),김태공(Tae-kong Kim),이중엽(Joong-yup Lee),이인성(Inseong Lee),김진우(Jinwoo Kim) 한국HCI학회 2016 한국HCI학회 학술대회 Vol.2016 No.1
본 연구는 심리적반발이론에 근거하여, 온라인 학습서비스의 동영상 강의시청맥락에서 사용자의 시스템 통제권을 제약하는 역발상적인 시스템 요인을 제시하였다. 이를 통해 사용자로 하여금 통제성의 상실감에 대한 인지(인지된 비통제성)가 강의 시청에서의 집중을 유도할 수 있음을 기존 연구에 대한 탐색을 통해 이론적 근거를 들어 가설화 하였고, 실험과 설문을 통해 가설 검증을 위한 데이터를 수집하였으며, 이를 분석, 설정된 가설이 통계적으로 유의미함을 검증하였다. Based on Psychological reactance theory, we presented a creative system feature which could restrict the user`s perceived control. Through this, we had set hypotheses insisting perception of user`s deprived freedom could cause user`s concentration on lecture, also collected data to confirm our hypotheses. Finally, we analyzed the data, so that investigated they are all statistically signified.
김태동 ( Kim Tae Dong ),오희주 ( O Hui Ju ),김국현 ( Kim Gug Hyeon ),김성목 ( Kim Seong Mog ),김준환 ( Kim Jun Hwan ),장병익 ( Jang Byeong Ig ),김태년 ( Kim Tae Nyeon ),정문관 ( Jeong Mun Gwan ) 대한소화기학회 2004 대한소화기학회지 Vol.43 No.1
Background/Aims: Pancreatic cancer is fatal with a dismal 6-month median survival from diagnosis. Diabetes mellitus is reported to be present up to 33.3 percent of patients with pancreatic cancer. The reason for the high frequency of diabetes is unknown. We studied the prevalence and duration of diabetes in patients with pancreatic cancer and the relationship between the two diseases. Methods: A total of 152 patients with pancreatic cancer diagnosed at Yeungnam University Hospital from January 1999 to December 2001 were enrolled in this study. Clinical features, family history, smoking history, and characteristics of the tumor were compared between diabetic and non-diabetic groups. Results: Among 152 patients with pancreatic cancer, 43 patients (28.3%) had diabetes. In diabetic group, mean age of diagnosis was significantly younger than non- diabetic group (62.0±7.2 vs. 65.0±8.8, p<0.05). Most of the patients with diabetes had non-insulin dependent diabetes mellitus (NIDDM) and did not have family history. Diabetes was diagnosed within 2 years after the diagnosis of pancreatic cancer in 35 patients (74.3%) of the diabetic group. There were no differences in the location and stage of tumor, chief complaints, presence of weight loss, and body mass index between the two groups. Conclusions: Diabetes mellitus occurs frequently in patients with pancreatic cancer and does not influence clinical features of pancreatic cancer. Pancreatic cancer should be suspected in patients with recent onset diabetes, especially in patients without family history of diabetes and with type of NIDDM. (Korean J Gastroenterol 2004;43:35-40)
그림자 영역에서 강인한 지역 특징점 기반의 차선인식 기법
김태동(Tae-Dong Kim),이강(Kang Yi),정경훈(Kyeong-Hoon Jung) 한국방송·미디어공학회 2016 한국방송공학회 학술발표대회 논문집 Vol.2016 No.6
자동차 산업이 발전하면서 안정적인 주행과 운전자의 편의성을 위한 지능형운전자보조시스템인 ADAS (Advanced Driver Assistance System)가 이슈가 되고 있다. 차선인식의 결과에 따라 차선이탈 경고시스템의 성능이 달라지기 때문에 차선인식은 ADAS에서 매우 중요한 핵심적인 기술이라 할 수 있다. 이에 본 논문에서는 그림자 영역과 같이 밝기의 분포가 균일하지 않는 환경에서 강인하게 동작하는 차선인식 알고리즘을 제안하였다, 지역적인 밝기 특징을 고려하여 차선에 해당하는 특징점을 추출하며, 추출된 특징점 가운데 이상치(outlier)를 제거하기 위해 RANSAC (RANdom SAmple Consensus) 알고리즘을 이용하여 차선을 검출한다. 또한 RANSAC 알고리즘에서 신뢰도가 높은 차선이 검출되면 그 주위에 특징점을 추출하기 위한 관심영역을 설정함으로써 안정적인 차선 검출이 가능하도록 하였다.
김태동(Tae Dong Kim),김진호(Jin Ho Kim) 대한기계학회 2020 大韓機械學會論文集A Vol.44 No.6
최근 폭발 하중을 받는 방폭문에 대한 연구가 활발히 진행되어지고 있는 추세이며, 국외에서는 여러 방폭 설계 기준을 제시하였다. 테러 공격이 국방 시설보다 일반 상업 건물에 집중되어지고 있으며, 보통의 구조 기술자들이 기본적인 수준의 방폭 설계를 수행할 수 있게 되었다. 이에 본 논문은 간단한 사례를 통하여 ANSYS Transient Structural을 사용하여 ductility ratio, support rotation angle을 계산한 뒤 방폭문(blast resistant door)의 방폭 성능을 살펴보았다. 폭발 하중의 정압만을 고려하여 해석을 수행하였으며, 2차원 설계 도면에서 CATIA Part Design을 통하여 각 부재들을 모델링하였고 CATIA Assembly를 통하여 부재들의 접촉 조건을 주어 3D 모델링을 진행하였다. μ =2.8734, θ=0.4941°라는 값을 얻을 수 있었으며 선정한 보호 수준에 적합하다는 결론을 도출하였다. Recently, research on the blast resistant door of the structures subjected to the blast load has actively been progressed, and various explosion proof design standards are presented abroad. Terrorist attacks have been concentrated in commercial buildings rather than military facilities, and normal structural engineers have been able to perform basic level explosion-proof designs. In this paper, we investigated the explosion resistance of blast resistant door after calculating the ductility ratio and support rotation angle using ANSYS Transient Structural through a simple case. The analysis was performed considering only the positive pressure of the blast loading and each member was modeled using the CATIA Part Design in a two-dimensional design drawing; 3D modeling was performed by providing the components" contact conditions through the CATIA Assembly. The values μ = 2.8734, θ = 0.4941° were obtained and conclusion was drawn that these values were suitable for the selected level of protection.