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m-shaper: A Sketch Drawing System for Musical Shape Generation
권두영,Kwon, Doo-Young The Korea Academia-Industrial cooperation Society 2015 한국산학기술학회논문지 Vol.16 No.2
This paper proposes a sketch drawing system called m-shaper for musical shape generation. Through simple sketch drawing, users can generate musical shape configuration which can be played by a computer. One key ingredient of the process is a unique concept for the interactive musical shape generation that combines shape and sound based on the designers' manual inputs. m-shaper captures the numerical values of drawing characteristics and determines how the musical notes and shapes can be generated. Using a tablet, four sketch movements are captured such as pressure, tilt, rotation and speed. Each point of a shape corresponds to a certain musical note that represents a type of instrument, duration, pitch, and octave. The current m-shaper has been developed as a computational tool for supporting the schematic design process. Designers in m-shaper draw geometric sketches with a musical inspiration and explore possible conceptual forms. They also can control the parameters for results and transform their sketch drawing. 본 논문은 음악적 형태 생성을 위한 스케치 드로잉 시스템, 엠쉐이퍼 (이하 m-shaper)를 제안한다. 간단한 스케치 드로잉을 통해 사용자들은 컴퓨터로 바로 연주가 가능한 음악적 형태를 구성할 수 있다. m-shaper는 드로잉 특징을 규정하는 변수를 획득하고 이를 이용하여 음표와 형태를 제작한다. 타블렛을 이용하여 4가지 스케치 움직임 정보, 압력, 회전각도, 기울기 각도, 속도 정보를 감지한다. 형태를 구성하는 각각의 점은 악기 종류, 음길이, 음높낮이, 옥타브를 표현하는 특정음표에 매핑된다. 현재 m-shaper 시스템은 디자인 초기단계를 지원하는 컴퓨터 연산도구로 개발되었다. 디자이너는 음악적 영감을 받으며 기하학적인 스케치를 그리고 개념 형태를 탐색할 수 있다. 디자이너들은 관련 제어값을 조절하면서 결과물을 조절하고 스케치 드로잉을 변형할 수 있다.
AZ91 마그네슘 합금의 플라즈마 전해산화 피막 형성 및 물성에 미치는 0.1 M NaOH + 0.05 M NaF 용액 중 Na₂SiO₃ 농도의 영향
권두영(Duyoung Kwon),송풍근(Pung-Keun Song),문성모(Sungmo Moon) 한국표면공학회 2020 한국표면공학회지 Vol.53 No.2
Effects of Na₂SiO₃ concentration added into 0.1 M NaOH + 0.05 M NaF solution on the formation behavior and properties of PEO films on AZ91 Mg alloy were investigated under 1200 Hz of alternating current (AC) by voltage-time curves, in-situ observation of arc generation behavior and measurements of film thickness, surface roughness and micro vickers hardness. In the absence of Na₂SiO₃ in the 0.1 M NaOH + 0.05 M NaF solution, about 4 μm thick PEO film was formed within 1 min and then PEO film did not grow but white spots were formed by local burning. Addition of Na₂SiO₃ up to 0.2 M caused more increased formation voltage and growth of PEO film with uniform generation of arcs. Addition of Na₂SiO₃ from 0.2 M to 0.4 M showed nearly the same voltage-time behavior and uniform arc generation. Addition of Na₂SiO₃ more than 0.5 M resulted in a decrease of formation voltage and non-uniform arc generation due to local burning. PEO film growth rate increased with increasing added Na₂SiO₃ concentration but maximum PEO film thickness was limited by local burning if added Na₂SiO₃ concentration is higher than 0.5 M. Surface roughness of PEO film increased with increasing added Na₂SiO₃ concentration and appeared to be proportional to the PEO film thickness. PEO film hardness increased with increasing added Na₂SiO₃ concentration and reached a steadystate value of about 930 HV at more than 0.5 M of added Na₂SiO₃ concentration.
아연계 인산염 피막용액에서 Fe(NO₃)₂ 농도가 SCM430 합금의 전기화학적 거동에 미치는 영향
권두영(Duyoung Kwon),송풍근(Pung-Keun Song),문성모(Sungmo Moon) 한국표면공학회 2019 한국표면공학회지 Vol.52 No.4
The formation behavior of zinc phosphate conversion coating (ZPCC) on SCM430 alloy was investigated in 25 vol.% of 1M ZnO + 170 ml/L solution containing various Fe(NO₃)₂ concentrations, using open-circuit potential(OCP), electrochemical impedance spectroscopy(EIS), cyclic polarization(CP) curve and tape peel test. OCP of SCM430 alloy and corrosion current density increased with increasing Fe(NO₃)₃ concentration. Resistance of films formed on SCM430 alloy by chemical conversion treatment decreased with increasing Fe(NO₃)₃ concentration. Color and adhesion of chemical conversion coatings became darker and worse, respectively, with increasing Fe(NO₃)₃ concentration. It is concluded that addition of Fe(NO₃)₃ into a zinc phosphating bath leads to faster reaction to form porous surface coatings with poor adhesion and corrosion resistance.
인산 및 규산 이온이 포함된 수용액에서 AZ31 마그네슘 합금의 플라즈마 전해산화 피막의 구조에 미치는 수산화나트륨 농도의 영향
권두영(Duyoung Kwon),문성모(Sungmo Moon) 한국표면공학회 2016 한국표면공학회지 Vol.49 No.1
The structure of plasma electrolytic oxidation (PEO) coatings was investigated as a function of NaOH concentration in 0.06 M Na₂SiO₃ + 0.06 M Na₃PO₄ solution by using SEM and epoxy replica method. The PEO film was formed on AZ31 Mg alloy by the application of anodic pulse current with 0.2 ms width and its formation behavior was studied by voltage-time curves during the formation of PEO films. It was found that the addition of NaOH into PO₄<SUP>3-</SUP> and SiO₃ <SUP>2-</SUP> containing aqueous solution causes a decrease in the PEO film formation voltage, suggesting that dielectric breakdown of the PEO becomes easier with increasing OH- ion concentration in the solution. With increasing OH- ion concentration, thickness of the PEO film increased and surface roughness decreased. The size of pores formed in the PEO layer became smaller and the number of cracks in the PEO layer increased with increasing OH- ion concentration. Based on the experimental results obtained in the work, it is suggested that OH- ions in the solution can contribute not only to the dielectric breakdown but also to the formation of PEO films in the presence of PO₄<SUP>3-</SUP> and SiO₃<SUP>2-</SUP> ions in the solution.
픽셀아트기반 게임 공동창작에 대한 연구 - 마리오되기를 중심으로
권두영(Doo-Young Kwon),이현기(Hyun-Ki Lee),홍창현(Chang-Hyeon Hong),김주연(Joo-Yeon Kim) 한국산학기술학회 2021 한국산학기술학회논문지 Vol.22 No.12
본 연구의 목적은 비전문가들이 함께 모여 하나의 공통된 주제 속에서 자신의 아이디어로 게임을 디자인하고 구현할 수 있는 창작 방법론을 개발하는 것이다. 연구 방법으로는 컴퓨터 그래픽 디자인과 코딩이 생소한 참가자들이 함께 협업하여 아이디어를 내어 마리오 되기(Be the Mario)라는 게임을 공동으로 창작한다. 공동창작 임무를 수행하면서, 관람자들이 개별 창작자의 소중한 꿈을 경험하도록 하였다. 마리오 되기는 초기 버전 마리오 게임 스타일로 제작되었으며 프로젝트에 참여한 8명의 창작자가 각자 자신의 스토리를 기획하고, 캐릭터와 스테이지를 제작하였다. 이를 모아 하나의 옴니버스식 게임으로 구성하였다. 자신의 꿈을 주제로 게임 공간을 연출하고 마리오 대신 본인을 닮은 캐릭터를 픽셀아트 작품으로 창작하였다. 횡스크롤 게임의 구조에 공동 스테이지와 개별 스테이지를 두어 개발 및 참여함으로써, 다수의 비전문가가 게임개발의 참여가 가능한 공동창작 디자인방법론을 개발하였다. The purpose of this study is to develop a creative methodology in which non-professionals can gather together to design and implement games in a common theme with their own ideas. As a research method, participants unfamiliar with computer graphic design and coding come up with ideas and jointly create a game called Be The Mario and introduce the results for integration. While carrying out the co-creation mission, viewers were enabled to experience the precious dreams of the individual creators. Be the Mario was produced in the style of the early version of the Mario game, and eight creators who participated in the project planned their own stories and produced characters and stages. These stories, characters, and stages were collected and composed into one omnibus game. Each participant directed a game space under the theme of his/her dream and created a character that resembles him/her as a pixel artwork instead of Mario. By developing and participating in the structure of cross-scroll games with joint and individual stages, the co-creation design methodology was developed enabling various non-expert people to participate in game development.