http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
한국 근대체육사 연구의 「歷史認識에 대한 檢討」 : 「民族史觀」에 의한 연구의 문제점과 과제를 중심으로
유근직,부기원 江原大學校附設體育科學硏究所 1994 江原大學校附設體育科學硏究所論文集 Vol.- No.18
First of all, the writing juding from background and reason is obviously a matter of the national consciousness on the study of Korean morden history of physical education. I indicates a national consciousness as to whether the subject of a thesis for a doctorate or master on the study of Korean morden history of physical education, have classified 6 step with limit and problem. Finally, when I think on study of Korean morden history of physical education, I indicate three types of theory about study object and project it. To the better a scientific study of Korean morden history of physical education, the result has been a concept of national consciousness with a point of study and attitude as usual, and I hope that a method of study will help both interest in and debate over the issues to continue.
이영석,이건직,박권필 順天大學校 1999 論文集 Vol.18 No.1
This study focused on the increase of lime plate strength by adding reinforced material into limestone and chemical reaction with carbon dioxide gas. Also we did experiment to find the optimum content of plaster as a binding component. Carbon fiber as reinforced material has disadvantages. It did not mixed well in the forming process and had low cohesion force with limestone. Content of glass fiber showed optimum at 1.0cm, 4.16 wt% in lime plate. The increase of strength in lime plate was ??, after reaction with CO₂at 70℃ for 6hr. When lime plate consists of 40wt% of plaster, 4.16 wt% of 1.0cm glass fiber, its strength was ??
( Gun Ha Park ),( Chang Min Lee ),( Jae Won Song ),( Moon Chan Jung ),( Jwa Kyung Kim ),( Young Rim Song ),( Hyung Jik Kim ),( Sung Gyun Kim ) 대한내과학회 2018 The Korean Journal of Internal Medicine Vol.33 No.3
Background/Aims: Tolvaptan is a very effective treatment for hypervolemic or euvolemic hyponatremia. We compared the clinical efficacy of and response to tolvaptan in patients with the syndrome of inappropriate antidiuretic hormone secretion (SIADH) and congestive heart failure (CHF). Methods: We retrospectively reviewed the medical records of 50 patients (SIADH, n = 30; CHF, n = 20) who were prescribed tolvaptan between July 2013 and October 2015. Tolvaptan was prescribed when the serum sodium level was < 125 mmol/L and the standard treatment failed. Normonatremia was defined as a serum sodium level of > 135 mmol/L. Results: After the initiation of tolvaptan therapy, there was an immediate response in the urine volume and serum sodium level in all patients. The improvements in the urine volume and serum sodium concentration were highest within the first 24 hours of treatment. In addition, the mean change in the serum sodium level during the first 24 hours was significantly higher in patients with SIADH than in those with CHF (ΔNa, 9.9 ± 4.5 mmol/L vs. 6.9 ± 4.4 mmol/L, respectively; p = 0.025). Also, the mean maintenance dose was lower, and the total duration of tolvaptan use was slightly shorter in the SIADH group than CHF group (21.5 ± 14.9 days vs. 28.0 ± 20.1 days, p = 0.070). Conclusions: The early response to tolvaptan treatment was better in patients with SIADH than in those with CHF. Thus, the tolvaptan treatment strategy should be differed between patients with SIADH and those with CHF.
김건엽(Gun-Yeob Kim),이연진(Yeon-Jin Lee),조은지(Eun-Ji Cho),이재인(Jae-In Lee),임은채(Eun-Chae Im),황한철(Hancheol Hwang),김상윤(Sang-Yoon Kim),홍성창(Sung-Chang Hong),김진호(Jin-Ho Kim),박성직(Seong-Jik Park) 대한환경공학회 2022 대한환경공학회지 Vol.44 No.11
목적 : 토양에서 암모니아 배출에 미치는 영향에 관한 문헌 고찰을 통하여 주요 요인들을 파악하고, 암모니아 배출감소를 위한 대책을 설립한다. 방법 : 농업, 암모니아, 미세먼지 등의 키워드를 활용하여 학술검색을 수행하였으며, 수집된 문헌에 대하여 토양의 특성이 암모니아 배출에 미치는 영향에 대해서 각 항목별로 정리하였다. 결과 및 토의 : 암모니아의 대기 중으로 배출은 잠재적으로 농업인의 경제적 수익을 감소시킬 뿐만 아니라 초미세먼지(PM2.5) 형성에 전구물질로 작용하여 대기 환경에 부정적인 영향을 미칠 수 있다. 국내 암모니아 주요 배출원 중에서 농업이 차지하는 비중은 78% 정도로 보고되고 있다. 본 연구에서는 토양에서 암모니아 배출은 암모니아 비료의 종류, 토양수분, pH, 온도, 양이온교환용량, 유기물, 토성에 영향을 받는다. 토양수분의 증가는 암모니아 배출량을 증가시킨다. 토양 pH가 증가함에 따라서 암모니아 배출량이 증가하는데 특히 7.5 이상에서 크게 증가한다. 토양 온도의 증가는 요소의 가수분해 속도와 암모니아 가스로 전환하는 속도를 증가시켜 암모니아 배출이 증가한다. 양이온교환용량이 큰 토양은 암모늄을 흡착시켜서 암모니아 배출을 감소시킨다. 점토 함량과 토양 유기물 함량이 높은 토양은 토양 pH 변화에 완충성이 커서 암모니아 배출을 감소시킨다. 결론 : 토양에서 암모니아 배출에 대한 기작 및 원인에 대한 이해를 바탕으로 최적의 토양 관리 및 환경 관리를 통해서 대기 중으로의 암모니아 배출을 저감 할 수 있다. Objectives : Major factors affecting ammonia emission from the soil and strategies to reduce ammonia emission were investigated through literature surveys. Methods : An academic search was conducted using keywords such as agriculture, ammonia, and fine dust, and the effects of soil characteristics on ammonia emission were summarized for each factor. Results and Discussion : Emissions of ammonia into the atmosphere can reduce economic returns for a farmer and negatively impact the atmospheric environment by acting as a precursor to PM2.5 formations. It is reported that agriculture accounts for 78% of the total ammonia emission sources in Korea. Ammonia emission from the soil is affected by the type of ammonia fertilizer, soil moisture, pH, temperature, cation exchange capacity, organic matter, and soil texture. An increase in soil moisture increases ammonia emissions. As soil pH increases, ammonia emissions increase, noticeably above 7.5. An increase in soil temperature increases the rate of hydrolysis of urea and the rate of conversion to ammonia gas, resulting in increased ammonia emissions. Soils with high cation exchange capacity adsorb ammonium to reduce ammonia emissions. Soils with a high clay content and soil organic matter content are more buffered to changes in soil pH, reducing ammonia emissions. Conclusion : Based on understanding the mechanisms and causes of ammonia emission from the soil, it is possible to establish soil and environmental management to reduce ammonia emissions into the atmosphere.
코어드릴링에 의한 중성화 신속평가 방법을 이용한 콘크리트 구조물의 중성화 현장 적용성 평가
임군수 ( Lim Gun-su ),이현직 ( Lee Hyeon-jik ),백성진 ( Beak Sung-jin ),이혁주 ( Lee Hyuk-ju ),김종 ( Kim Jong ),한민철 ( Han Min-cheol ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.2
In this paper, we aimed to develop a new method for diagnosing the depth of neutralization in architectural and civil engineering structures using the core drilling method, which combines the speed of drilling with the accuracy of core ringing. When compared to the drilling method, the core drilling method showed a lower measurement deviation of 1-2mm (7.6%) in confirming the depth of neutralization. This is believed to be a result of potential interference during the sample collection process in the drilling method, where the drill may pass through aggregates, leading to overestimation, as indicated in previous studies. The rapid evaluation of neutralization using the core drilling method serves as an alternative to address the issues associated with both drilling and core ringing methods in diagnosing the depth of neutralization. It offers a solution to the inaccuracy caused by coarse aggregates and the cumbersome post-processing steps required for neutralization diagnosis. Our proposed technique aims to provide an accurate and expedited diagnosis of neutralization depth without the need for additional processes.
고해상도 저전력 SAR ADC의 면적 최적화를 위한 타이밍 레지스터 구조 설계
민경직(Kyung Jik Min),김주성(Ju Sung Kim),조후현(Hoo Hyun Cho),부영건(Young Gun Pu),허정(Jung Hur),이강윤(Kang-Yoon Lee) 大韓電子工學會 2010 電子工學會論文誌-SD (Semiconductor and devices) Vol.47 No.8
본 논문에서는 고해상도 저전력 SAR 타입 ADC(아날로그 디지털 변환기)의 면적을 획기적으로 줄이기 위해서 역 다중화기(Demultiplexer)와 카운터 (Counter)를 이용하는 타이밍 레지스터 (Timing register) 구조를 제안하였다. 전통적으로 사용되는 쉬프트 레지스터에 기반을 둔 타이밍 레지스터 구조는 해상도가 증가될수록 면적이 급격하게 증가하고, 또한 잡음의 원인이 되는 디지털 소비 전력도 증가되는 반면, 제안하는 구조는 해상도 증가에 따른 에러 보정 회로의 면적과 소비 전력 증가를 줄일 수 있다. 0.18 ㎛ CMOS 공정을 이용하여 제작하였으며, 제안한 타이밍 레지스터 구조를 이용하여, 기존 구조 대비 5.4배의 면적 감소와 디지털 전력 최소화의 효과를 얻을 수 있었다. 설계한 12 비트 SAR ADC는 11 비트의 유효 비트 (ENOB), 2 ㎽ (기준전압 생성 블록 포함)의 소비전력과 1 MSPS의 변환 속도를 보였으며, 레이아웃 면적은 1㎜ x 1㎜ 이었다. In this paper, a timing register architecture using demultiplexer and counter is proposed to reduce the area of the high resolution SAR type analog to digital converter. The area and digital power consumption of the conventional timing register based on the shift register is drastically increased, as the resolution is increased. On the other hand, the proposed architecture results in reduction of the area and the power consumption of the error correction logic of the SAR ADC. This chip is implemented with 0.18 ㎛ CMOS process. The area is reduced by 5.4 times and the digital power consumption is minimized compared with the conventional one. The 12 bits SAR ADC shows ENOB of 11 bits, power consumption of 2 ㎽, and conversion speed of 1 MSPS. The die area is 1㎜ x 1㎜.