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NO<sub>x</sub> 제거용 저온 플라즈마 반응기에서의 플라즈마 화학 및 입자 성장
김동주,김교선,Kim, Dong-Joo,Kim, Kyo-Seon 강원대학교 산업기술연구소 1999 産業技術硏究 Vol.19 No.-
We analyzed theoretically the removal efficiency and the particle growth inside the pulse corona discharge reactor to remove $NO_x$ and investigated the effects of process variables such as the NO and $NH_3$ input concentrations. Most of NO is converted into $NO_2$ and $HNO_3$ and the $HNO_3$ reacts with $NH_3$ to form the $NH_4NO_3$ particles. About 6.4% of NO is converted into $HNO_2$ which form the $NH_4NO_2$ particles by reaction with $NH_3$. Some of $NO_2$ follows the reaction pathway to form $NO_3$ and $N_2O_5$. The amount of particles formed inside the reactor is basically determined by the input $NH_3$ concentration. The ratio of NO to $NH_3$ affects the reactor length for particle formation significantly. The higher the input concentrations of NO and $NH_3$ are, the faster the particles grow.
논문 - 새만금호 농업용지 방수제 주요지점의 수위 및 유속 분포 수치모의
김동주,김지성,박영진,Kim, Dong-Joo,Kim, Ji-Sung,Park, Young-Jin 한국관개배수위원회 2011 한국관개배수논문집 Vol.18 No.2
In this study, the internal development of the Saemangeum basic concept of the changes being promoted as a lead construction and agricultural land works(54.2 km) has established a numerical model for the scenario. Inner dike to the construction site to reflect the following conditions to reproduce the numerical model by each areas during construction inner dike where scour expected to perform a numerical analysis for the hydraulic review by areas with possible future changes were to predict. Simulation results showed that numerical simulation results for scour expected frequency of 100 years in flood conditions is simulated with 0.02 m/s~l.27 m/s scour velocity for high-impact factor is considered to be stable. Each start point and end point work area of inner dike reviewed and flow rate of 100 years flood, the velocity distribution in the influx of a large flow rate of 0.02 m/s~1.68 m/s occur during construction inner dike are not being evaluated as a special issue does not occur will be considered according to the method and order of construction inner dike stability review suggests that the future need to be made.
김동주,김한우,Kim, Dong-Joo,Kim, Han-Woo 대한전자공학회 2002 電子工學會論文誌-CI (Computer and Information) Vol.39 No.6
Computational models up to now for Korean morphology have been linear in that it deal with only segmentation of morphemes rather than formation of the internal structure of a word. When integrating a linear computational model with syntax analysis, it requires an additional interface component between this model and the syntax to bind morphemes into sentence constituents. Furthermore the linear model is not semantically intuitive. In this paper, based on word-syntactical viewpoint, we propose an integrated computational model that deals with morpheme segmentation, formation of syntactic element (sentence constituent), and even internal structure of word. Formalism of two-level morphology is employed to cope with morpheme segmentation and alternation problems, and functional diacritics are proposed to incorporate categorial context into the two-level formalism. A modified GLR-based algorithm is also proposed to check syntactical constraint of morphemes. 한국어 형태론에 대한 기존의 전산모형은 선형적인 것들로 단어 내부구조 분석보다 형태소 분리 문제에만 관심을 두고 있다. 이러한 선형적 전산모형을 구문 분석 과정과 통합적으로 고려할 경우, 구문 단위 요소의 형성을 위해 형태소 분석 결과를 묶어야만 하는 추가적인 과정이 필요할 뿐만 아니라 의미적 직관성을 얻기도 어려웠다. 본 논문에서는 형태소 분리와 구문 요소 형성뿐만 아니라 단어의 구조 분석까지도 통합적으로 다룰 수 있는 단어통사론적 시각에 따른 전산 모형을 제안한다. 먼저 형태소 분리와 변형 문제를 다루기 위해 2단계형태론의 형식화를 도입하고, 품사 문맥을 반영하기 위해 기능성 구분문자를 제안한다. 그리고 형태소의 통사적 결합 검사를 위해 GLR에 기반한 변형 알고리즘을 제안한다.