근대사회 사례관리, 누구를 위한 사회복지실천인가?에 대한 함의

김연은 한국정신건강사회복지학회 2015 한국정신건강사회복지학회 학술발표논문집 Vol.2015 No.10

수학적 모델링의 구현을 위한 교사 교육: 사례 연구

김연 영남수학회 2020 East Asian mathematical journal Vol.36 No.2

Mathematical modeling has been emphasized because it offers important opportunities for students to both apply their learning of mathematics to a situation and to explore the mathematics involved in the context of the situation. However, unlike its importance, mathematical modeling has not been grounded in typical mathematics classes because teachers do not have enough understanding of mathematical modeling and they are skeptical to implement it in their lessons. The current study analyzed the data, such as video recordings, slides, and surveys for teachers, collected in four lessons of teacher education in terms of mathematical modeling. The study reported different kinds of tasks that are authentic with regards to mathematical modeling. Furthermore, in teacher education, teachers’ identities have separated a mode as learners and a mode as teachers and conflicts and intentional transition were observed. Analysis of the surveys shows what teachers think about mathematical modeling with their understanding of it. In teacher education, teachers achieved different kinds of modeling tasks and experience them which are helpful to enact mathematical modeling in their lessons. However, teacher education also needs to specifically offer what to do and how to do it for their lessons.

Ruiz-Primo와 shavelson의 수행평가 요소를 적용한 과학 수행평가 사례

김연일 慶北大學校 師範大學 附屬國民學校 1999 現場硏究 Vol.20 No.-

가사심판의 효력에 관한 연구

김연 한국민사소송법학회 2013 民事訴訟 : 韓國民事訴訟法學會誌 Vol.14 No.2

The Domestic Litigation Act of Korea provides that the final judgment of the first instance on a family non-litigation case shall be rendered by adjudication in the article 39 paragraph 1. This provision applies to all of the following two kinds of procedure in non-litigious domestic cases: one is family non-litigation case of category D(라) which has rare disputes, and the other is category E(마) which is to solve disputes between both parties. However, paragraph 4 of the same article provides that the provisions concerning decisions under the Civil Procedure Act shall apply mutatis mutandis to adjudications. Is that mean that adjudication is the same as the decision?I do not think that adjudication is exactly the same as decision. Then,how can I understand the effect of adjudication? In this paper, I tried to understand the effect of adjudication of non-litigious domestic case: First,does the adjudication has binding force to the court? Second, can you say that the adjudication shall be fixed generally? Third, does the adjudication has res judicata? Fourth as the last, how can I understand the constitutive power and executory power of adjudication?As the answers of the above question and conclusion, I suggested that the existing opinions are to be changed according to the purpose and characteristics of the non-litigious domestic cases.

임베디드 시스템을 위한 영상객체의 검출방법

김연일(Yun-Il Kim),노승용(Seung-Ryong Rho) 제어로봇시스템학회 2009 제어·로봇·시스템학회 논문지 Vol.15 No.4

In this paper, image detection and recognition algorithms are studied with respect to embedded carrier system. There are many suggested techniques to detect and recognize objects. But they have the propensity to need much calculation for high hit rate. Advanced and modified method needs to study for embedded systems that low power consumption and real time response are requested. The proposed methods were implemented using Intel® Open Source Computer Vision Library provided by Intel Corporation. And they run and tested on embedded system using a ARM920T processor by cross-compiling. They showed 1.6sec response time and 95% hit rate and supported the automated moving carrier system smoothly.

The Idiosyncrasy of Maggie and the Double Vision of Stephen Crane’s Maggie: A Girl of the Streets

김연만 대한영어영문학회 2008 영어영문학연구 Vol.34 No.4

In Maggie: A Girl of the Streets (1893, 1896), Stephen Crane (1871-1900) portrays the Bowery of New York where most of its residents live by naturalistic norms of living. The district is depicted as a naturalistic world controlled by environmental determinism, and it is also a chaotic world full of fights, screams, clashes, betrayals, disorder, and social injustice. The protagonist of the novel Maggie, however, is a romantic idealist thrown into such a harsh naturalistic environment. Unlike the majority of the inhabitants of the Bowery, she stands out as a beauty with a romantic worldview and displays idiosyncratic attributes that do not seem to fit the naturalistic milieu of the tenement district. Due to her peculiar inclinations to romanticism and idealism, she falls victim to the environment and faces a series of ordeals and, eventually, a tragic death. Crane, nevertheless, maintains a double standard in presenting Maggie’s tragic life by denouncing the harsh environment and her inability to adapt to the environment at once.

하수처리를 위한 MASA 시스템의 동역학적 해석

김연은 ( Yun-eun Kim ),조용현 ( Yong-hyun Cho ) 한국환경기술학회 2015 한국환경기술학회지 Vol.16 No.4

최근 도시와 산업의 급속한 발달, 인구의 증가와 생활수준의 향상 등으로 인하여 하폐수 발생량이 증가됨에 따라 수질 오염이 가속화되고 있으며, 폐수 중의 난분해성 유기물질 성분이 차지하는 비율이 증가하고 있다. 특히 질소, 인 제거가 큰 과제로 대두되며 문제점을 개선하는 것이 중요한 과제로 남아있다. 따라서 본 연구는 고도 단계 유입 혐기호기공법(ASA: Advanced Step Aeration)에 MAB (Membrane Attached Biofilm)를 적용한 MASA (Modified ASA system)시스템을 이용하여 유기물질과 질소의 동역학적 해석 및 슬러지 발생량 평가를 하였다. MASA 시스템의 동역학적 계수를 산정한 결과 최저 수온인 14.1℃를 기준에서 호기조-1과 호기조-2의 값이 1.56, 0.66 mgN/gMLVSS·hr, 무산소조의 값이 1.09 mgN/gMLVSS·hr로 나타나 기존 ASA 시스템의 호기조의 값이 0.98 mgN/gMLVSS·hr에 비해 질산화 효율이 37.17%로 증가되어 질산화가 효과적으로 일어남을 알 수 있었다. 질소에 대한 물질수지 이론식을 이용하여 반응계수들을 산출하였고 이를 이용하여 반응조 설계가 가능하도록 하였다. As waste water amounts increase due to the recent rapid development in the city and industry, population increase, and improvement of living standards, water pollution is being accelerated and the percentage of non-degradable organic material components in wastewater is also increasing. Especially removal of nitrogen and phosphorus is on the rise as a big assignment and therefore, improvement of this problem remains to be an important issue. Therefore, in this study, a pilot - plant experiment was conducted to improve the nitrification, denitrification and phosphorus removal efficiency by using MASA (Modified ASA system) system where MAB (Membrane Attached Biofilm) is applied to ASA: Advanced Step Aeration. And evaluation of dynamic interpretation about organic materials and nitrogen generation amount was conducted. Calculated results of dynamic coefficients in MASA system showed 1.56 mgN/gMLVSS·hr of KN in aerobic-1 reactor, 0.66 mgN/gMLVSS·hr of KN in aerobic-2 reactor, 1.09 mgN/gMLVSS·hr of KDN in anoxic reactor respectively. Regarding nitrification efficiency in NASA system at the lowest temperature of 14.1℃, KN value in ASA system was 0.98 mgN/gMLVSS·hr and KN value in MASA system was 1.56 mgN/gMLVSS·hr, which showed nitrification efficiency increased by 37.17%. Reaction coefficients were drawn using material balance theoretical equation about the nitrogen could be practically applied in the design.

ASA공법에서 MAB(Membrane Attached Biofilm)의 적용성 평가

김연은 ( Yun-eun Kim ),조용현 ( Yong-hyun Cho ),안성환 ( Seong-hwan An ) 한국환경기술학회 2014 한국환경기술학회지 Vol.15 No.1

본 연구는 고도 단계 유입 혐기호기공법(ASA: Advanced Step Aeration)에 MAB(Membrane Attached Biofilm)를 적용한 MASA(Modified ASA system)시스템을 이용하여 질산화, 탈질 및 인제거 효율을 개선시키고자 하였다. Pilot-scale의 실험 장치를 통해 MAB의 침적위치에 따른 Mode 1(호기조), Mode 2(재호기조), Mode 3(호기조와 재호기조)의 조건으로 운전되었으며 그에 따른 최적위치 선정과 유출수의 수질항목별 처리특성을 파악하였다. 실험 결과, 호기조와 재호기조에 MAB를 적용한 Mode 3의 경우가 최적 운전 조건이었으며 수질항목별 처리특성은 평균제거율이 SS 98.00 %, BOD 95.64 %, COD_Cr 98.14 %, NH₄⁺-N 98.38 %, T-N 87.80 %, T-P 92.00 %으로 나타났다. T-N의 경우 14.30 %, NH₄⁺-N 15.88 %까지 평균제거율이 상승함으로 효율적인 처리가 이루어졌다. In this study, a pilot - plant experiment was conducted to improve the nitrification, denitrification and phosphorus removal efficiency by using MASA (Modified ASA system) system where MAB (Membrane Attached Biofilm) is applied to ASA: Advanced Step Aeration. And the best deposition location of MAB was selected and treatment characteristics according to water quality categories were identified with Mode 1, Mode 2, Mode 3 by depositing MAB (Membrane Attached Biofilm) in the aerobic reactor, reaerobic reactor and simultaneously in the aerobic reactor, reaerobic reactor. Experiment results showed that Mode 3 was the best operating condition where MAB was applied in aerobic reactor and reaerobic reactor and treatment characteristics according to water quality categories had the average removal rates of SS 98.0 %, BOD 95.64 %, COD_Cr 98.14 %, NH₄⁺-N 98.38 %, T-N 87.8 %, and T-P 92.00 %. In case of T-N, efficiency of biological nitrogen removal could be identified to be reduced because efficient treatments were made, as the average removal rates increased up to 14.3 %, NH₄⁺-N 15.88 %.

폐건전지 탄소봉의 Recycling에 의한 리튬 2차전지용 부극활물질 제조

김연도,박태문,장문호,고영옥,이철태 한국공업화학회 2010 한국공업화학회 연구논문 초록집 Vol.2010 No.1

Temperature-responsive drug release behavior of surface modified PVA/PNIPAAm hydrogel

김연이,윤주미,김형일 한국고분자학회 2011 한국고분자학회 학술대회 연구논문 초록집 Vol.2011 No.2