추체험적 역사교육을 위한 시뮬레이션 게임

정재욱(Jeong Jaewook),정재욱(Jeong Jaewook) 한국디지털디자인학회 2011 디지털디자인학연구 Vol.11 No.3

역사교육에는 과학적 사고라고 일컬어지는 논리적인 비판 분석 능력과 함께 감정이입 직관 통찰 상상적 추론 등의 상상적 이해 능력이 요구된다. 이를 위해서는 암기식 주입교육에서 벗어나 역사의 사건들을 통해 현실의 삶을 바르게 이해하고 바람직한 미래를 건설하도록 하는 역사조망 능력을 배양하는 교육이 필요하다. 암기식 주입교육의 대안으로'추체험적 역사교육'을 전략적으로 선택하고 이의 효과적인 교육방법으로'시뮬레이션 게임'의 활용을 제안하였다. 시뮬레이션 게임의 의미와 범주를'정보의 재구성'을 기준으로 정의하고 효과적인 에듀테인먼트 콘텐츠에 대한 조건을 정리하였다. 사례연구를 통한 제안의 타당성을 검토하기 위해 4년간의 고입선발고사와 시판 문제집 실전모의고사 사회과목 역사분야 문제의 유형과 빈도를 분석하였고 (주)KOEI가 발매한 역사시뮬레이션 게임'태합입지전(太閤立志傳)V'의 게임구조와 비교하였다. 몰입환경 속에서 게임유저에게 반복적인 동작을 수행하게 함으로써 역사적 사건이나 지역명 인물 등을 자연스럽게 암기하게 하는 게임의 속성은 단답식 주입교육의 대안으로서의 효과가 크다는 것과 게임의 전체적 맥락 속에서 그 시대에 살고 있는 듯한 몰입환경을 제공하고 나아가 게임유저가 주관적으로 그 시대에 대한 이해와 평가를 한다는 부분은 추체험적 역사학습을 위한 교구(校具)로서 시뮬레이션 역사게임이 매우 적절한 것이라는 것을 확인 할 수 있었다. Both abilities of imaginative understanding of empathy intuition insight inference etc. and scientific thinking of logical criticism and analysis ability are required in history education. To cultivate the two abilities the history education needs to get out of the indoctrination and rote learning and to aim for the proper understanding of real life through historical events and the correct viewing of the history to build a desirable future. In this paper'the re-enactment in history education,' as an alternative of indoctrination instruction by rote learning was chosen strategically and the use of'simulation game,' as an effective teaching method was proposed. Meaning and scope of simulation game were defined by the criterion of'information restructuring' and the effective conditions of edutainment contents were organized. With a purpose to investigate the proposal feasibility through the case study the question types and their frequencies contained in ten sets of high school entrance examination were analyzed and the results were compared with the game structure of'Taiko-Risshiden V' a history-simulation game released by KOEI company.

Analysis of temperature-dependent electrical characteristics in amorphous In-Ga-Zn-O thin-film transistors using gated-four-probe measurements

Jeong, Jaewook,Jun Lee, Gwang,Kim, Joonwoo,Moon Jeong, Soon,Kim, Jung-Hye American Institute of Physics 2013 JOURNAL OF APPLIED PHYSICS - Vol.114 No.9

High operating voltage application of transparent a-InGaZnO thin-film transistors

Jeong, Jaewook,Lee, Gwang Jun,Kim, Joonwoo,Kim, Jung-Hye,Choi, Byeongdae Institute of Physics 2013 Semiconductor science and technology Vol.28 No.2

<P>We demonstrate high operating voltage transparent thin-film transistors (HVTTFTs) using amorphous InGaZnO (a-IGZO) active layers by introducing a high resistance bulk region in the source/drain electrodes. The HVTTFTs are operated at above V<SUB>DS</SUB> = 100 V with a high on/off current ratio and a good subthreshold slope. The electrical characteristics of the HVTTFTs were dominantly affected by Schottky contact resistance for small off-set length, and bulk resistance for large off-set length, indicating that optimization of the off-set length is a key factor to realize high performance HVTTFTs.</P>

Fabrication and characterization of stretchable copper electrodes on poly(dimethylsiloxane) substrate by direct deposition

Jeong, Jonghyun,Jeong, Jaewook Institute of Pure and Applied Physics 2017 Japanese Journal of Applied Physics Vol. No.

<P>Stretchable Cu electrodes are fabricated by direct deposition on He-and O-2-plasma-treated and prestretched poly( dimethylsiloxane) ( PDMS) substrates. The electrodes show conductivity owing to the formation of a hard and thin silica-like blocking layer, which forms low-period wavy structures on the PDMS substrate surface. The stretchable Cu electrode fabricated with He-plasma treatment shows superior performance compared with that fabricated with O-2-plasma treatment under a strain condition owing to the lack of -OH groups on the surface. In situ microscopy images obtained under strain conditions indicate that the good stretching capability of the stretchable Cu electrode originates from its low-frequency ( long-period) wavy structure. X-ray photoelectron spectroscopy measurements are performed to study the various impurities in the stretchable Cu electrode. (C) 2017 The Japan Society of Applied Physics</P>

Analysis of Plasma Treatment Effects on a Compliant Substrate for High Conductive, Stretchable Ag Nanowires

Jeong, Jonghyun,Jeong, Jaewook The Korean Vacuum Society 2018 Applied Science and Convergence Technology Vol.27 No.1

In this paper, plasma treatment effects on a ploy(dimethyl siloxane) substrate were analyzed for the applications of stretchable silver nanowire (Ag NWs) electrodes. The oxygen plasma treated sample shows the best performance compared to nitrogen treated and untreated samples. The lowest sheet resistance and reasonable stretching capability was achieved up to 20% strain condition without open circuit fail for the oxygen plasma treated sample.

An integrated evaluation of productivity, cost and CO₂ emission between prefabricated and conventional columns

Jeong, Jaewook,Hong, Taehoon,Ji, Changyoon,Kim, Jimin,Lee, Minhyun,Jeong, Kwangbok,Lee, Seunghwan Elsevier 2017 Journal of cleaner production Vol.142 No.4

<P><B>Abstract</B></P> <P>The off-site prefabrication construction method offers several advantages that have positioned it as a good alternative to the conventional method. Recently in South Korea, a form-latticed prefabricated steel reinforced concrete (Form-LPSRC) column was invented as substitute for a conventional steel reinforced concrete (SRC) column. This study evaluates the productivity, cost, and CO<SUB>2</SUB> emission of Form-LPSRC column with those of SRC column through a case study. Two factory projects utilizing same-size Form-LPSRC and SRC columns are studied. In addition, Web-CYCLONE simulation and equation-based methods are utilized to calculate the productivity, cost, and CO<SUB>2</SUB> emission of the two column methods. In particular, Web-CYCLONE simulation is used for considering the idle time during the construction process. The Form-LPSRC column improved productivity by 42.5% and provided costs savings of 1.32% compared with the SRC column. Thus, the Form-LPSRC column is excellent for projects where construction duration and cost are of utmost importance. However, the CO<SUB>2</SUB> emission of the Form-LPSRC column is 72.18% higher than that of the SRC column.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Form-LPSRC column was invented as substitute for a conventional SRC column. </LI> <LI> This study evaluated two methods in terms of productivity, cost, and CO<SUB>2</SUB> emission. </LI> <LI> Web-CYCLONE simulation and equation-based methods were utilized for case study. </LI> <LI> Form-LPSRC column improved productivity by 42.5% and saved costs of 1.32%. </LI> <LI> CO<SUB>2</SUB> emission of Form-LPSRC column is 72.18% higher than that of SRC column. </LI> </UL> </P>

Development of an integrated energy benchmark for a multi-family housing complex using district heating

Jeong, Jaewook,Hong, Taehoon,Ji, Changyoon,Kim, Jimin,Lee, Minhyun,Jeong, Kwangbok Elsevier 2016 APPLIED ENERGY Vol.179 No.-

<P>The reliable benchmarks are required to evaluate building energy efficiency fairly. This study aims to develop the energy benchmarks and relevant process for a multi-family housing complex (MFHC), which is responsible for huge CO2 emissions in South Korea. A database, including the information on building attributes and energy consumption of 503 MFHCs, was established. The database was classified into three groups based on average enclosed area per household (AEA) through data mining techniques. The benchmarks of site energy use intensity (EUI), source EUI, and CO2 emission intensity (CEI) were developed from Groups 1, 2, and 3. Representatively, the developed benchmarks of CEI for Groups 1, 2, and 3 were 28.17, 24.16, and 20.96 kg-CO2/m(2) y, respectively. A comparative analysis using the operational rating identified that the developed benchmarks could solve the irrationality of the original benchmarks from overall database. In the case of the original benchmarks, 93% of small-AEA-groups and 16% of large AEA-groups received lower grades. In the case of the developed benchmark, the upper and lower grades in Groups 1-3 were both adjusted to 50%. The proposed process for developing energy benchmark is applicable to evaluate the energy efficiency of other buildings, in other regions. (C) 2016 Elsevier Ltd. All rights reserved.</P>

Development of a prediction model for the cost saving potentials in implementing the building energy efficiency rating certification

Jeong, Jaewook,Hong, Taehoon,Ji, Changyoon,Kim, Jimin,Lee, Minhyun,Jeong, Kwangbok,Koo, Choongwan Elsevier 2017 APPLIED ENERGY Vol.189 No.-

<P>Building energy efficiency rating (BEER) certification is an energy performance certificates (EPCs) in South Korea. It is critical to examine the cost saving potentials of the BEER-certification in advance. This study aimed to develop a prediction model for the cost saving potentials in implementing the BEER certification, in which the cost saving potentials included the energy cost savings of the BEER certification and the relevant CO2 emissions reduction as well as the additional construction cost for the BEER-certification. The prediction model was developed by using data mining, life cycle cost analysis, real option valuation, and Monte Carlo simulation. The database were established with 437 multi-family housing complexes (MFHCs), including 116 BEER-certified MFHCs and 321 non-certified MFHCs. The case study was conducted to validate the developed prediction model using 321 non-certified MFHCs, which considered 20-year life cycle. As a result, compared to the additional construction cost, the average cost saving potentials of the 1st-BEER-certified MFHCs in Groups 1, 2, and 3 were predicted to be 3.77%, 2.78%, and 2.87%, respectively. The cost saving potentials can be used as a guideline for the additional construction cost of the BEER-certification in the early design phase. (C) 2016 Elsevier Ltd. All rights reserved.</P>

Improvements of the operational rating system for existing residential buildings

Jeong, Jaewook,Hong, Taehoon,Ji, Changyoon,Kim, Jimin,Lee, Minhyun,Jeong, Kwangbok,Koo, Choongwan Elsevier 2017 APPLIED ENERGY Vol.193 No.-

<P>The Building Energy Consumption Certification (BECC) evaluating the energy performance of existing buildings has been launched since 2016 to reduce the operational energy consumption in existing buildings in South Korea. However, the current BECC has some potential problems, and these problems should be solved to evaluate the energy performance of existing building more accurately. Thus, this study aims to identify the potential problems in the current BEEC using the hypothesis testing. And then this study proposes the improved BECC using the energy benchmarking process and the modified grading process to solve the potential problems. As a result of the hypothesis testing based on the data of 504 multi-family housing complexes (MFHCs), the potential problems were identified as follows: (i) the current classification criteria caused the irrational judgements, and (ii) the current grading system was lacking in its assessment function (over 94% of MFHCs ranked in the average level as grades 'C' and 'D'). To solve these problems, this study proposed the improved BECC. The energy benchmarking process provides the reasonable classification criteria, and the modified grading process finds the reasonable number of grades and its range. The result of comparative analysis based on 504 MFHCs indicated that the improved BECC could solve the problems in the current BECC. That is, over 94% of MFHCs were ranked in grades 'C' and 'D' in the current BECC while they were shown in all five grades (i.e., grades 'A', 'B', 'C', 'D', and 'E') in the improved BECC. The policy-makers can more accurately assess the energy performance of existing MFHCs by using the improved BECC. (C) 2017 Elsevier Ltd. All rights reserved.</P>

Novel Gated-Multiprobe Method for Measuring a Back Electrode Effect in Amorphous Oxide-Based Thin-Film Transistors

Jaewook Jeong,Joonwoo Kim,Soon Moon Jeong Institute of Electrical and Electronics Engineers 2014 IEEE transactions on electron devices Vol. No.

<P>In this paper, we investigated the variations in electrical characteristics of amorphous indium-gallium-zinc-oxide thin-film transistors using a gated-multiprobe method when additional probe electrodes are on the back-channel region. We found that the resistance of the probe region is much smaller than that of the nonprobe region, which can be modeled by a series connection of transistors and resistors indicating that the probe region is independent of V<SUB>GS</SUB> and induces a decrease in effective channel length. We also performed technology computer aided design (TCAD) simulations and found that the effective channel length decreases and drain current increases, which is consistent with the experiments.</P>