정보화 시대의 교수-학습 변화에 대응하는 고등학교 건축계획 방향에 관한 연구

이용환(Lee Yonghwan),이용환(Lee Yonghwan) 한국디지털디자인학회 2011 디지털디자인학연구 Vol.11 No.4

A creative personality is needed to survive in the information society. Therefore it is imperative for schools to carry out fundamental changes in the educational system to cultivate creative manpower. The major factor to such fundamental changes is 'information education system.' It is believed that schools can significantly improve the effects of learning by using a variety of high-tech tools and equipment in the classroom through u-Learing system. Schools have focused so far on student-oriented education. As the roles of schools however have been increasingly emphasized in the information society community-centered functions are now additionally required. 새로운 정보화시대로의 변화에 대한 미래 교육은 기술의 교육적 활용으로 추진되었던 ICT 활용교육 e-러닝 등의 교육정보화 정책 추진에 변화와 함께 보다 교육의 본질적 차원에서의 접근이 더욱이 강조되고 있다. 본 연구는 유비쿼터스 사회에 적합한 유러닝 교수-학습체제 학교를 구현하기 위해서 정부의 7차 교육과정과 미래형 8차 교육과정에 의해 시행되어지고 있는 고등학교 교수-학습의 건축공간이 유러닝(u-Learning) 교수-학습시스템의 적용으로 인해 변화하는 미래 학교건축의 건축적 방향을 제시함으로써 국가정책 사업으로 추진하고 있는 유러닝을 고도화사업에 기여하며 미래 학교시설에 관한 정책을 입안하는데 필요한 기초 자료가 되고자하는데 의의가 있다.

캐쉬제어기용 READ/WRITE 버퍼의 성능분석 및 회로설계

이용환(Yonghwan Lee),김윤학(Y.H. Kim),이광엽(K.Y. Lee),이용석(Y.S. Lee),이문깁(M.K. Lee) 대한전자공학회 1993 대한전자공학회 학술대회 Vol.1993 No.11

Development of Nickel Oxide Thin-film based Carrier-Selective Contacts Silicon Solar Cells

Yonghwan Lee(이용환),Junhee Kim(김준희),Soo Min Kim(김수민) 한국태양에너지학회 2021 한국태양에너지학회 학술대회논문집 Vol.2021 No.11

Hierarchical Decision

Yonghwan Lee(이용환) 한국디자인학회 2022 한국디자인학회 국제초대전도록 Vol.2022 No.9

불가사리 소재 다공성 세라믹을 이용한 산성광산배수 내 중금속의 제거특성(I)

이용환(Yonghwan Lee),임수빈(Soobin Yim) 한국지반환경공학회 2014 한국지반환경공학회논문집 Vol.15 No.12

천연제올라이트와 불가사리를 목분과 함께 혼합?소성한 펠렛형 Zeolite-StarFish 세라믹(ZSF 세라믹)을 이용하여 산성광산배수 내 중금속의 제거특성 및 영향인자를 파악하고자 하였다. ZSF 세라믹에 의한 중금속의 제거반응은 초기 3시간까지 빠른 속도로 진행되었으며 높은 알칼리 상태를 나타내었다. 중금속 제거를 위한 ZSF 세라믹의 최적 소성온도는 800∼1,000 ℃로 파악되었으며 소성시간에 따른 중금속 제거효율의 변화는 거의 나타나지 않았다. ZSF 세라믹의 최적 투여농도는 1.0∼1.2 %임을 알 수 있었고, 1.0 % 이상의 ZSF 세라믹의 투여농도 조건에서는 Pb 85.5 %를 제외한 Al, As, Cd, Cu, Fe, Mn, Zn 대부분의 중금속이 95 % 이상의 높은 제거효율을 나타내었다. 목분의 배합비가 증가할수록 중금속 제거효율은 증가하였으며 목분의 적정 배합비는 10 %로 파악되었다. 회분식 실험을 통해 불가사리 소재의 ZSF 세라믹은 산성광산배수 내 중금속을 효과적으로 제거할 수 있는 처리제임을 알 수 있었으며, 특히 목분을 첨가한 다공성 ZSF 세라믹을 통해서는 산성광산배수 내 중금속의 제거효율을 더욱 향상시킬 수 있었다. This study was performed to investigate the removal characteristics of heavy metals in Acid Mine Drainage (AMD) using pellet-type Zeolite-StarFish ceramics (ZSF ceramics), in which natural zeolite and starfish were mixed and calcined with wood flour. Kinetic experiment showed the removal reaction of heavy metals by ZSF ceramics reached the equilibrium status within 3 hours. The optimal calcination temperature range for removal of heavy metals was measured to be 800∼1,000 ℃. The calcination time had little effect on the removal of heavy metal in AMD. The adequate dose of ceramics was shown to be 1.0∼1.2 % for removal of heavy metals in AMD. High removal efficiencies of heavy metals (Al, As, Cd, Cu, Fe, Mn, Zn) in AMD, more than 95 % except for Pb, were obtained under the condition of dose of ceramics more than 1.0 %. The removal efficiencies of heavy metals increased with increasing mixing concentration of wood flour. The adequate mixing concentration of wood flour was observed to be 10 %. The batch experimental results exhibited that the ZSF ceramics could act as an efficient ceramics for removal of heavy metals in AMD and the wood flour could provide porous ZSF ceramics with enhanced removal efficiency of heavy metals.

Meister

Yonghwan Lee(이용환) 한국디자인학회 2023 한국디자인학회 국제초대전도록 Vol.2023 No.12

불가사리 소재 다공성 세라믹으로 충진된 컬럼연속반응조를 이용한 산성광산배수 내 중금속의 제거특성

이용환 ( Yonghwan Lee ),임수빈 ( Soobin Yim ) 한국물환경학회(구 한국수질보전학회) 2016 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2016 No.-

현대 사진예술의 쟁점들

이용환 ( Lee Yonghwan ) 현대사진영상학회 2020 현대사진영상학회논문집 Vol.23 No.3

It is the age of post-photography, referring to the era of electronic photography. Digital photographs can be modified and manipulated any time so they might be false images. A digital photograph can be an index but may morph into an icon. Photographs can be the products of either a virtual world or a fictional imagination. Any post-photographic expression brought about a revolutionary change in artistic photography. The assertion that a photograph is a mark of light is no longer objective. Photographs in the era of post-photography feature a composition of time, a mixture of the past and present, a representation of past memories, a coexistence of two and three dimensions, a coexistence of fragmented history, and the mode of pastiches. A photograph here is nothing but a material for representation. And yet, photography’s realistic ontology is still effective and much more photographs tend to reinforce photography’s realistic aspects. As a result, photography as art comes to have much more diverse forms. We are living in an age of the post-Internet after post-photography. Photography has already been part of art. Artists employ or utilize re- intermediated mediums in accepting information in this post-Internet era. In this era imaging technology has merged with contemporary art. A contemporary metaphor maintains its meaning in a relation incessantly altering like rhizomes. The concept of readymade has still been appropriated, profoundly influenced by the motive and dynamism of the post-Internet environment. The post-Internet is an extensive account of the artistic convention that takes something networked and integrated for granted. As we are living in the era of nonlinear technical images, the material property of marks engendered by photography’s contact with light have disappeared in the digital environment of contemporary art and photography. The everyday in which the virtual is mixed with the real through any in-intermediation and solidarity with time, place, space, and medium. As a real space is connected to a virtual space by the advancement of Internet technology and social networking sites, art materials have turned into something immaterial and any representations force us to perceive a virtual space as a new reality. The medium of photography is given a new status as media art in the deconstruction of genre in the the post-Internet era. Two-dimensional photography is asked to have a three-dimensional perception of space with the progress of technical videos, forging a united front with sculpture and video as an arrangement of time. As photography has become the medium to incarnate all aspects of post-modernism, we realize we have to become the subject to perceive the world, not merely choose time. Both language and expression are altered as the medium changes. We witness the medium of photography enriching art history across the world. The problem of whether photography is art or not is no longer a matter of discussion. It is nothing but a medium. What should be asked again is what we should do with this medium.

Green Smart Future School: Educational Facility Policy Directions according to User-Centered Environment

Yonghwan Lee(이용환) 한국디자인학회 2021 한국디자인학회 국제초대전도록 Vol.2021 No.5

산업현장 실시간 센싱정보 활용/분석을 위한 빅데이터 플랫폼

이용환 ( Yonghwan Lee ),서진형 ( Jinhyung Suh ) 한국창의정보문화학회 2020 창의정보문화연구 Vol.6 No.1

일반적인 산업현장에서의 빅 데이터 활용을 위해서는 먼저 산업현장의 설비, 공정, 환경 등에서 수집되는 정형화된 빅 데이터를 처리 및 저장하고, 비정형 데이터인 경우 비구조적 데이터로 저장하거나 정형데이터로 변환하여 데이터베이스에 저장하여야 한다. 이러한 데이터베이스의 기본이 되는 데이터를 수집하기 위하여 본 논문에서는 산업현장의 계측정보, 환경 정보 등을 융합, 활용할 수 있는 개방형 IoT 표준기반의 빅데이터 수집 방안을 연구한다. 본 논문에서 제안된 빅 데이터 수집을 위한 플랫폼은 실시간 센싱정보를 처리하기 위해 산업현장의 빅 데이터의 수집, 가공, 저장이 가능하며, 저장된 산업현장의 데이터를 활용 목적에 맞게 데이터를 처리 및 분석하는 다양한 빅 데이터 기술들을 적용할 수 있다. In order to utilize big data in general industrial sites, the structured big data collected from facilities, processes, and environments of industrial sites must first be processed and stored, and in the case of unstructured data, it must be stored as unstructured data or converted into structured data and stored in a database. In this paper, we study a method of collecting big data based on open IoT standards that can converge and utilize measurement information, environmental information of industrial sites to collect big data. The platform for collecting big data proposed in this paper is capable of collecting, processing, and storing big data at industrial sites to process real-time sensing information. For processing and analyzing data according to the purpose of the stored industrial, various big data technologies also can be applied.