간략화된 메쉬에서 보간된 법선 벡터의 분포를 이용한 3차원 모델 검색

김아미(A-Mi Kim),송주환(Ju-Whan Song),권오봉(Ou-Bong Gwun) 한국멀티미디어학회 2009 멀티미디어학회논문지 Vol.12 No.11

복셀 세선화와 구조 그래프를 이용한 3차원 모델 검색

김아미(A-Mi Kim),송주환(Ju-Whan Song) 한국정보기술학회 2010 한국정보기술학회논문지 Vol.8 No.7

This paper proposes structural graph as a shape descriptor for retrieval of three-dimensional models. We extract skeleton of model through voxel thinning and then convert this skeleton line into structural graph which consists of nodes and edges. There are three types of voxels(line point, branch point, end point) in skeletal line. Each node in the structural graph associates with the local shape of the segment. Each edge in that corresponds to a joint in the original skeleton. This research measures the degree of similarity between models with combination of three components-weighted geometric, strutural and sub-parts similarity. The result of classification experiments have shown that the proposed method have been benefit from articulated models and described in a numeric discrimination scale max. 0.88. It has shown better retrieval performance in precision-recall chart than the existing Reeb-Graph technique.

포스트모던적인 창작방식으로의 패스티쉬 연구

김아미 ( A Mi Kim ) 한국기초조형학회 2008 기초조형학연구 Vol.9 No.1

중도장애학생의 활동보조서비스 이용현황 및 만족도 분석

김아미(A Mi Kim),김정연(Jeong Youn Kim) 조선대학교 교과교육연구소 2012 敎科敎育硏究 Vol.33 No.2

The purpose of this study was to investigate the satisfaction and the realities of Personal Assistance Service for students with severe disabled. 185 students with severe disabled, who got supplement of Personal Assistance Service from complex center for the disabled and self-reliance life center for disabled, are participated on survey. The results are presented as follows. First, using period of Personal Assistance Service is distributed from 1 month to 4 years and 9 months, and half of students use Personal Assistance Service for 60 hours per month, 5 times a week, and 3 to 4 hours for once. Second, the content about Personal Assistance Service of Students with Severe Disabled, categories, which are reclothing and using bathroom for situation treatment support, cleaning for home activity support are highly appeared as the answer. Third, After this researcher look at satisfaction for Personal Assistance Service of students with severe disabled, categories, that are movement assistance for situation treatment support, cleaning for home activity support, recreation for private activity support, companion and cheering for emotion support, and using equipment for other service support, have answer for high satisfaction about service. The vitalization of using Personal Assistance Service of students with severe disabled needs characterization and systematization for offering of continuous service.

다중해상도 복셀화 기법

김아미(A-Mi Kim),송주환(Ju-Whan Song) 한국정보기술학회 2012 한국정보기술학회논문지 Vol.10 No.6

In this paper we introduce a new method about voxelization. Unlike existing methods, polygons are projected onto the principal axis and then we set the bounding volume to satisfy the minimal coverage criteria of discrete surface representation. Solid voxelization is performed by filling the model’s surface with a voxel in each case the vertex intersects the planes. In this process, lists of associated vertices and polygons are stored in a hash table, which is used to reduce the time to consume and the space to store in high resolution voxelization. In a voxelization experiment with PSB data, proposed methods have shown a better performance than J.H.’s plane depth based method in 67% of models. As the resolution is high, process time is slowly increased.

내용 : 한국 사범대학 수학교육과의 교육과정 및 교수방법 분석

권오남 ( Oh Nam Kwon ),김아미 ( A Mi Kim ),조형미 ( Hyung Mi Cho ) 한국수학교육학회 2012 수학교육 Vol.51 No.3

This study has examined the current status of mathematics education departments by analyzing its curriculum and teaching methods. We analyzed data set of the number of faculty and students, curricula, textbooks and instructional methods among 23 mathematics education department in Korea, The data reveals that the curricula of the universities of education has shown that more content knowledge subjects are taught than pedagogy knowledge subjects, however, it is important to note that there is increasing emphasis on pedagogical content knowledge. In addition, the curricula of mathematics education departments deal with various aspects of pedagogical content knowledge. What matters is whether the system works for developing a sound and deep understanding of fundamental aspects of the subject matter in future mathematics teachers. The results of the study point to the importance of pedagogical content knowledge and to the essential components that can promote further understanding of effective teaching for preparing future teachers in mathematics education departments.

Geant4시뮬레이션 자동화를 위한 통합 프레임워크 환경 개발 : Geant4Editor

신성식(Sung-Sik Shin),김아미(A-Mi Kim),김승완(Seung-Wan Kim),송주환(Ju-Whan Song),권오봉(Ou-Bong Gwun) 대한전자공학회 2008 電子工學會論文誌-CI (Computer and Information) Vol.45 No.4

입자 물리 방사선 연구는 우리 일상생활의 많은 부분에 도움을 주고 있다. 비파괴검사를 가능하게 하여 우리가 사용하는 물건의 안전성을 검증하고, 사람에게 유해한 환경을 판단하고, 사람의 질병을 치료하는 등 다양한 분야에서 활용되고 있다. 이와같이 입자 물리 방사선 연구는 유용하지만 직접적인 실험을 하기가 어려워 컴퓨터 시뮬레이션을 이용한다. 그 중 현재 대표적인 입자 물리 시뮬레이션 라이브러리 중 하나가 Geant4이다. 그러나 Geant4는 시뮬레이션을 하기 위해 사용자가 직접 C++언어를 통하여 프로그램을 작성해야 하는 어려움이 있다. 이 어려움을 해결하기 위해 물리연구자의 요구사항을 분석하여 Geant4에 맞는 시뮬레이션 환경을 생성하는 시뮬레이션 자동화 프레임워크인 Geant4Editor를 설계하였다. Geant4Editor는 자원 관리자(Data Manager)를 통하여 자원(사용자 생성 데이터)을 효율적으로 관리하며, 시뮬레이션에서 필요한 필수 클래스를 사용자의 요구를 반영하여 자동으로 생성한다. Researches on particle physics have benefited our everyday life in many aspects. They have tested the safety of the objects we use everyday, conducted experiments to examine harmful environments to man, and treated diseases. Despite the usefulness of particle physics in a range of fields, however, it’s difficult to conduct researches and experiments directly. But the advancements in the computer industry have allowed for experiments of particle physics in virtual simulations. One of the foremost simulation libraries for particle physics that have been researched actively these days, Geant4 has been put to diverse uses in particle physics. This study designed GUI so that physicists, who were not good at programming, could use a simulation library faster, more accurately, and more conveniently. It also developed the Geant4Editor, a simulation automation framework. The advantages of the Geant4Editor include automatic generations of essential classes in a simulation using Geant4 libraries and real-time reflection of user demands in a simulation. It also allows for efficient management of resources(user-created data) through the Data Manager.

Poly(3,4-ethylenedioxythiophene)필름의 전기화학적 합성 및 특성연구

김아미,오응주 명지대학교 자연과학연구소 2001 자연과학논문집 Vol.20 No.-

Poly(3,4-ethylenedioxythiophene) [PEDOT] 필름을 여러 다른 전해질 [tetra-n-butylammonium hexa-fluorophosphate (TBAPF6), tetra-n-butylammonium tetrafluoroborate (TBABF4), lithium perchlorate (LiClO4)]를 사용하여 전기화학적 방법으로 합성하였다. 또한 전기화학적 합성에 미치는 중합전위, 중합온도, H2O의 영향 및 고분자사슬과 전해질용액간의 상호작용을 조사하기 위하여 donor number (DN)가 다른 propylene carbonate (DN : 15.1), acetonitrile (DN : 14.1), benzonitrile (DN : 11.9), nitrobezene (DN : 4.4), nitromethant (DN : 2.7)을 전해질용매로 사용하여 PEDOT 필름을 합성하였다. PF6-를 전해질 음이온으로 사용하였을 경우의 전기전도도(141 S/cm)가 BF4-, ClO4-를 사용한 경우(49.4, 50.8 S/cm)보다 전기전도도가 높게 나타났다. 또한 용매의 donor number가 커질수록 전기전도도가 높게 나타나 PEDOT필름의 전기화학적 합성시 전기전도도는 전해질음이온과 용매의 donor number에 영향을 받는 것을 확인하였다. PEDOT [poly(3,4-ethylenedioxythiophene)] films were electrochemically synthesized using PF6-, BF4-, ClO4- as electrolyte anions. To investigate the interaction between the polymer chain and electrolyte solution, electrolyte solutions with different donor number (DN) [propylene carbonate (DN : 15.1), acetonitrile (DN : 14.1), benzonitrile (DN : 1.9), nitrobezene (DN : 4.4), nitromethane (DN : 2.7)] were used to synthesize PEDOT films and the effects of applied potential, polymerization temperature, addition of H2O to electrolyte on the characteristics of PEDOT films were studied. PEDOT film doped with PF6- electrolyte anion showed higher electrical conductivity (141 S/cm) than those doped with BF4-, ClO4- electrolyte anions (DN : 49.4, 50.8 S/cm). As the donor number of electrolyte solvent increased, the electrical conductivity of PEDOT film increased. In electrochemical synthesis of PEDOT film, it was found that the conductivity of PEDOT films depends on the electrolyte anion and the donor number (DN) of electrolyte solvents.