연속식 오존처리공정을 이용한 낙동강 상수원수의 정수처리 효과

임영성,강관호,이홍재,서동철,박문수,허종수,조주식 한국환경농학회 2002 한국환경농학회지 Vol.21 No.3

낙동강 상수원수를 대상으로 연속적 오존처리에서 오존주업농도에 따른 유기물 분해 특성을 조사하기 위하여 오존처리에 의한 DOC성분변화, UV254/DOC의 변화와 소비오존에 따른 DOC 제거효율을 조사한 결과는 다음과 같다. 유입원수의 수질변화에 따라 다소 차이는 있었으나 전반적으로 오존주입농도가 증가할수록 DOC 처리효율도 증가되었다. 오존처리에 따른 DOC 성분변화는 전오존을 3 mg/L농도로 처리시 TDOC, ADOC, A&BDOC 및 NRDOC는 각각0.6, 0.2, 0.1 및 1.0 mg/L 정도 오존처리에 의하여 감소되었으나 BDOC는 0.8 mg/L 증가하였다. UV254/DOC의 분율은 오존주입농도를 1, 3 및 5 mg/L 처리하였을 때 전오존의 경우는 각각 0.048, 0.044 및 0.037 이였고, 후오존의 경우는 각각 0.018, 0.015 및 0.012로 나타나 오존주입농도가 증가할수록 감소하는 경향을 보였다. 초기 DOC mg당 소비되는 오존량에 대한 DOC 제거율은 전오존과 후오존처리의 초기 DOC에 대한 소비오존량이 각각 약 1.5와 2.3일 때 각자 25%와 32%로서 최대의 DOC 처리효율을 나타내었다. 낙동강 상수원수에 전오존을 처리할 경우 오존주입량은 초기 DOC mg당 소비된 오존이 1.5 mg 이내의 농도가 되도록 주입하고, 후오존은 유입수인 모래여과수의 초기 DOC mg당 소비된 오존이 2.3 mg이내의 농도가 되도록 조절하여 주입하면 적당할 것으로 생각되었다. This study was carried out to evaluate the pollutant removal efficiencies of the advanced drinking water treatment using ozonation process. For raw water. Nakdong River was used. By conducting continuous ozonation experiments, the following results were obtained. Efficiency of water treatment was enhanced with increase in ozone dosage. When ozone dosage of 3 mg/L was used, preozonation of raw water reduced TDOC, ADOC, A&BDOC and NRDOC as much as 0.6 mg/L, 0.2 mg/L, 0.1 mg/L and 1.0 mg/L, respectively. On the other hand, content of BDOC Increased at the level of 0.8 mg/L. Ratio of UV254 absorbance to DOC content by the preozonation with 1, 3 and 5 mg/L dosage were 0.048, 0.044 and 0.037, respectively. In case of postozonation, it were 0.018, 0.015 and 0.012, respectively. When the ratios of consumpted ozone content to 1 mg of initial DOC were 1.5 and 2.3 in preozonation and postozonation treatment, respectively, the highest DOC removal rates of 25% and 32% were obtained by the continuous ozonation.

李箱文學의 文體 考察

林鐘秀,李在天 三陟大學校 2001 論文集 Vol.34 No.3

The purpose of this thesis is to understanding wholly such stylistic of Lee Sang's works thought analyzing style. The difficultly in understanding Lee Sang's world of literature is not in his queer life, but in the peculiar uses of words in his works. It may be reasonable in these on hin that everyone should search for the secrecy of writing hinted by his literary style. But there few theses that have dealt with the style of Lee Sang as a leading topic. And most of theses on him have had a tendency to remain within the line of superficial observation till now.

풍력 발전 시스템의 피치제어

강상수,강승균,임종환,허종철 濟州大學校工科大學産業技術硏究所 1999 尖端技術硏究所論文集 Vol.10 No.1

Wind turbine system converts wind energy into electric energy. Since the velocity of wind is random in nature, control of the angular velocity of the blade is necessary in order to generate high quality electric power. The control of the blade can be divided into the stall regulation type and the pitch control type. The stall regulation type which utilizes an aerodynamic stall is simple and cheap, but it suffers from fluctuation of the resulting power. On the contrary, pitch control type is based on the fact that the torque of the blade can be changed by varying the pitch angle of the blade. It is mechanically and mathematically complicated, but the control performance is better than that of the stall regulation type. This paper derives a mathematical modeling of the wind turbine system, and suggests a pitch control algorithm. The validity of the algorithm is demonstrated with the results produced through sets of experiments.

풍력 발전 시스템의 피치제어

강상수,강승균,임종환,허종철 濟州大學校 産業技術硏究所 1999 산업기술연구소논문집 Vol.10 No.1

Wind turbine system converts wind energy into electric energy. Since the velocity of wind is random in nature, control of the angular velocity of the blade is necessary in order to generate high quality electric power. The control of the blade can be divided into the stall regulation type and the pitch control type. The stall regulation type which utilizes an aerodynamic stall is simple and cheap, but it suffers from fluctuation of the resulting power. On the contrary, pitch control type is based on the fact that the torque of the blade can be changed by varying the pitch angle of the blade. It is mechanically and mathematically complicated, but the control performance is better than that of the stall regulation type. This paper derives a mathematical modeling of the wind turbine system, and suggests a pitch control algorithm. The validity of the algorithm is demonstrated with the results produced through sets of experiments.

아윤 아파두라이의 scape 개념을 통한 문화의 세계화와 현대건축의 상관관계 고찰

장근수,김현하,임종엽 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1

Today's culture represents its process of fragmentation. Recognizing this feature, this study will examine the conceptional difference between Modernity and cultural globalization based on the concept of Arjun Appadurai's Scapes. Then this study will consider the relationship between cultural globalization and contemporary architecture, by studying on design processes of contemporary architects who attempt to construct cultural flow as an experience element.

ZMP를 이용한 굴삭기의 안정성에 관한 연구

최종환,엄혁,임태형,김승수,양순용,이병룡,안경관 한국공작기계학회 2003 한국공작기계학회 춘계학술대회논문집 Vol.2003 No.-

The hydraulic excavator has been a popular research object for automation because of its multi-workings and economic efficiency. When it works crane tasks, most of disasters happen. The stability of the excavator having crane function has a close relation with excavator's posture, motion and load. In this paper, the stability of tipping-over has been analysed using Zero Moment Point(ZMP),

웹 질의 기반의 동적 웹 에디터 시스템의 설계 및 구현

조준호,임종수,김응모 成均館大學校 科學技術硏究所 2000 論文集 Vol.51 No.1

As web environment and technology improve rapidly these days, many users get desirable information by means of web, and represent the information that they have through web pages construction. Therefore, importance and application of web editor for easy and convenient homepage making have increased. In this paper, we propose a web query system based on dynamic web editor. The editor makes it possible for users to conveniently make homepages by improving limit of client based web editor or template web page service supplied by hosting site. And users search for desirable information through web pages on the huge web, so they can add this information for users web page or create new web page. Through this web editor which implements server based on the web, users can make web page flexiblely and can make polished web page which increases reading and comprehensiveness to access information easily.

분포형 유출모형을 이용한 홍수예경보 시스템

조홍제,임민수,윤종춘 울산대학교 1999 공학연구논문집 Vol.30 No.1

본 연구에서는 격자 물수지 기법을 이용하여 기존의 분포형 유출모형인 TOPMODEL (Topograpy-based hydrological model)을 수정 보완하고, 실제의 강우현상을 표현하는 연속강우형 곡선인 무차원 삼각형 우량주상도로써 강우의 시간분포에 따른 유출모의를 통하여 홍수예경보 시스템 개발에 있어서의 방법을 제시하였다. 모형에 필요한 지형인자를 추출하기 위해서는 국립지리원에서 제작된 1:5,000 수치지도를 이용하여 대상유역인 사연댐 유역을 가로, 세로 50m 크기의 격자로 분할하여 각각의 격자가 가지고 있는 독립적인 입력자료들을 추출하였다. 또 개개의 격자마다 유출해석을 위한 수문정보를 입력하여 격자별 물수지를 계산하고 단방향 흐름경로 알고리듬에 의하여 지표흐름을 추적함으로써 유역의 전반적인 시간적, 공간적 수문량을 파악하였다. 이 과정은 지리정보시스템(GIS,Geographic Information System)을 활용하였으며 GIS 도구 중의 하나인 ARC/INFO의 ARC 와TIN 그리고 GRID 모듈을 이용하여 모형의 실행에 필요한 입력자료를 추출하였고 ARC/INFO의 내장언어인 AML(Arc Macro Language)을 사용하여 모형의 실행 및 결과를 출력하였다. The purpose of present study is to modify TOPMODEL(Topography-based hydrological model) of existing distributed runoff model by grid-based water balance method and present flood forecasting and warning system development method using a actual rainfall pattern from the dimensionless triangular distribution. The geographic data to simulate model used physiographic map scale 1:5,000 manufactured by the Geography government houses. The test area selected SayeonDam watershed and that was divided into horizontally and vertically size 50m raster cell. besides, as each grid cell had hydrologic data, the model calculated grid-based water balance and analyzed general spatially=temporally hydrologic information of watershed with a routing surface flow by single flow direction algorithms. The supported all grid data used ARC. TIN, GRID modules and AML(Arc Macro Language)of Arc/Info one of the GIS/(Geographic Information system) tool.

結晶學에 관한 論題(Ⅱ)

徐日煥,金光柱,徐鍾命,林星秀 충남대학교 자연과학연구소 1989 忠南科學硏究誌 Vol.16 No.2

축구포지션별 무산소 운동능력 분석

손장식,정정욱,김종호,임정수,김훈 대구대학교 기초과학연구소 2003 基礎科學硏究 Vol.19 No.3

In this study, the Wingate power test was performed to investigate of the anaerobic power output in soccer players who play in different position. The main purpose of the test was to provide the enhancement of anaerobic capacity which was conducted by comparing and analysing of the Wingate test. This will improve the performance during the soccer games. Seventeen soccer players with three different positions, FW, MF, DF, were recruited, and undertook the Wingate power test, and anaerobic power, peak power output, anaerobic capacity, and fatigue index was analysed. There was a significant effect of a peak power output among positions showing MF>DF>FW (P<.05). MF revealed the highest peak power output at 15 and 30 seconds time points compared to DF and FW. As far as the players' positions were concerned, a relative anaerobic capacity showed a similar results with a peak power output (P<.05; MF>DF>FW). Unlike with these results, the fatigue index in different positions did not show any statistical significant results (P>.05). Based on these results, it was suggested that the systematical training program is required to perform a modern soccer, pressure and total soccer, in MF players. If the physical strength, especially power out, in MF players is enhanced, the results of the soccer games will be also improved.