• 방송공학회논문지
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• 제9권3호
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• pp.236-245
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• 2004

본 논문에서는 view scalability를 고려한 3차원 다시점 동영상 코덱을 제안한다. 다시점 동영상을 효율적으로 부호화하기 위하여 부호화의 기본 단위로는 GGOP (Group of GOP) 구조를 제안하며 그 GGOP 구조는 시점의 수와 카메라 사이의 베이스 라인의 간격에 따라 유동적으로 여러 가지 타입을 가질 수 있다 제안된 다시점 동영상 부호기는 전처리, 변이 추정/보상, 움직임 추정/보상, 차영상 부호화, 비트율 제어로 구성되며 다시점 동영상 비트열을 생성하게 된다. MPEG-2와의 호환성을 위하여 기준이 되는 동영상은 MPEG-2로 부호화를 수행하여 메인 비트열을 생성하였고, 나머지 시점들에 해당되는 동영상들은 변이 벡터 및 움직임 벡터를 이용하여 보조 비트열을 생성하여 복호단에 전송된다. 다시점 동영상 복호기는 메인 비트열을 복호하기 위한 MPEG-2 복호기와 보조 비트열을 복호하기 위한 복호기로 구성된다. 또한, 수신단에서 보유하고 있는 디스플레이의 특징에 따라 원하는 시점만을 선택하여 복호화를 가능하게 할 수 있는 view scalability 기능을 제안한다. 실험을 통하여 제안한 다시점 동영상 코덱의 GGOP 구조의 유동성, MPEG-2와의 호환성, view scalability의 성능을 확인하였다. 또한 view scalability로 원하는 시점만을 복원한 3차원 동영상을 여러 종류의 3차원 다시점 모니터에 디스플레이를 하여 주관적인 성능을 확인하였다

• 한국데이타베이스학회:학술대회논문집
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• 한국데이타베이스학회 1994년도 DB산업기술 활성화를 위한 학술대회 및 기술 심포지움
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• pp.105-129
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• 1994

The information system of corporations are facing a new environment expressed by miniaturization, decentralization and Open System. It is therefore of utmost importance for corporations to adapt flexibly th such new environment by providing for corresponding changes to their existing information systems. The objectives of this study are to identify this new environment faced by today′s information system and develop effective methods for data resource management under this new environment. In this study, it is assumed that the new environment faced by information systems can be specified as Distributed Computing Environment, and in order to achieve such system, presents Client/server architecture as its representative computing structure, This study defines Client/server architecture as a computing architecture which specialize the fuctionality of the client system and the server system in order to have an application distribute and perform cooperative processing at the best platform. Furthermore, from among the five structures utilized in Client/server architecture for distribution and cooperative processing of application between server and client this study presents two different data management methods under the Client/server environment; one is "Remote Data Management Method" which uses file server or database server and. the other is "Distributed Data Management Method" using distributed database management system. The result of this study leads to the conclusion that in the client/server environment although distributed application is assumed, the data could become centralized (in the case of file server or database server) or decentralized (in the case of distributed database system) and the data management method through a distributed database system where complete responsibility and powers with respect to control of data used by the user are given not only is it more adaptable to modern flexible corporate environment, but in terms of system operation, it presents a more efficient data management alternative compared to existing data management methods in terms of cutting costs.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2009년도 추계학술발표대회 논문집
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• pp.146-150
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• 2009

Present family pattern of Korean society has been changed into nuclear family pattern based on the married couple from traditional expanded family pattern. As the entire social consciousness has been changed into private disposition, the number of independent household for 1 person has increases. Also, as the delivery age of first child became late according to the elongation of average period for the national education, the increment of average age for the first marriage and women's participation in the society, the family pattern of married couple lasts longer than used to be. Like this, considering the family formed period comprised from a household for 1 person to a household for 1married couple and senescence increase, as any response is inevitable for the requirement of residential space where 1~2 dwellers' life can be accepted economic and functionally within smaller scaled space, development and research on a plan system(flexible-typed plan) increasing the degree of freedom is required in developing plan of unit household. In the study for this, considering the change of population and social structure, I suggest the method in developing economic design responding to the differentiation, designing the change of support-system and infill-system based on the systemic comprehension about the residing environment in the family formation period and the research for main life pattern and residing environment in the family formation period in the present city life. I will set (family) composing system, develop basic and mixing typed standard model and establish the stage of applied development for the development of economic design.

• 한국주거학회논문집
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• 제25권5호
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• pp.83-91
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• 2014

The main purpose of this research is to understand how the problems, which existing letter-shape houses have, are solved in Unjoru which is one of the letter-shape houses. Furthermore, there is the secondary purpose which is to realize the architectural characteristics of Unjoru through the process from the composition of rooms and buildings to the method of structure and roof formation. This research was approached in terms of architectural design, and as the result, the problems of the existing letter-shape houses was resolved by literally converting the shape of outdoor space to 品-shape form. Moreover through the result, it was recognized that the 占-Shape plan was flexible in responding to the demand of the times, such as the order of precedency within men and women and each generation. In addition to the previous results, it was confirmed that the location of major rooms was also decided by considering the interrelationship with natural environment of surrounding area. Also, in the whole proportion of building's plan, each building, such as ㄷ-shape Anchae and big-sized and middle-sized Sarangchae having 丁-shape form, and major rooms in the each building have proportion system such as 1:1, 3:4, $1:\sqrt{2}$, and 3:5 as aesthetic numerical value. Finally, it was understood that the architectural intention had double-sided characters, one side was authority and dignity in the aspect of shape and another side was practicality in aspect of inner housing life.

• 한국전문물리치료학회지
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• 제18권2호
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• pp.60-66
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• 2011

Foot posture is important in the development of the musculoskeletal structure in the lower limbs because it can change the mechanical alignment. Although foot orthotics are widely used for the correction of malalignments in the lower extremities, the biomechanical effects of wedges have not yet been cleared. The aim of this study was to investigate whether medial wedges affect the electromyographic (EMG) activity of the knee and hip joints in healthy adults that are performing one leg standing. Seventeen healthy volunteers performed the one leg standing under two foot conditions: A level surface, and a $15^{\circ}$ medial wedge. The subjects' EMG data for the gluteus maximus (Gmax), gluteus medius (Gmed), tensor fasciae latae (TFL), biceps femoris (BF), vastus lateralis (VL), and vastus medialis oblique (VMO) were recorded, along with the surface EMG, and all were analyzed. The EMG activity of the Gmed and TFL had significantly decreased under the medial wedge condition during one leg standing. Further study is needed in order to investigate whether medial wedges influence the EMG activity and kinematic data of the knee and hip joints as well as the ankle joints in adults with flexible flatfoot, while they are performing one leg standing.

• 한국전자파학회논문지
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• 제20권10호
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• pp.1071-1076
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• 2009

본 논문에서는 도전사를 이용하여 UHF 대역에서 동작하는 'ㅂ'자 자수 형태의 wearable RFID tag 안테나를 설계하였다. T-정합 형태를 가지는 'ㅂ'자의 자수형 tag 안테나를 다양한 도전사의 특성을 분석하여 전기적 성질이 좋은 200D(데니아)의 도전사로 자수 형태로 의복에 직접 자수를 넣을 수 있도록 설계하였다. 의류 위에 전도성을 가진 도전사를 이용한 태그를 자수해서 넣음으로 해서 의류의 착용할 수 있고 구부러질 수 있으면서 인식이 가능하게 하였다. 도전사의 데니아(denier)별로 제작 가능한 실의 전기적 특성을 측정하고, 그 측정치를 기반으로 자수 형태의 RFID 태그를 제작하였다. 제작한 안테나의 성능을 검증하기 위하여 반사 손실, 인식 거리 패턴 등을 측정하여 약 1.52 m의 인식 거리를 갖는 것으로 나타났다.

• 한국산업정보학회논문지
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• 제7권5호
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• pp.175-182
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• 2002

개인자료교환의 방법 중 가장 보편화된 것이 e메일임에도 불구하고, 기존의 웹메일이나 클라이언트 프로그램 등의UA(UserAgent)는 운영자 임의의 고정적인 인터페이스, 서버접속에 의한 메일 데이터 조작 등으로 활용범위를 좁혀놓았다. e메일 사용에서 한층 더 나아가 사용자가 보다 효과적으로 e메일 정보를 활용하고 재사용이 가능하도록 하는 시스템을 개발하는 것이 필요하다. 이 논문에서는 e메일 정보의 SMTP/MIME표준을 XML 표준형식으로 변환/저장하여 사용자가 e메일 정보를 다양한 어플리케이션에서 활용하고 재 사용할수 있도록 하였다. 최근 발전하고 있는 XML 기술을 ASP기반의 웹메일을 통하여 기존에 웹메일 사용자들에게 친숙한 인터페이스를 제공하고, e메일을 XML로 변환하고 변환된 XML문서를 XSL을 이용하여 사용자 취향에 맞게 재구성할 수 있게 하였다. DOM API를 사용하여 변환된 XML파일을 조합하고, DB가 없이 파일로 관리하여 개인사용자가 e메일 정보를 소장할수 있게 하는 시스템을 설계하고 구현하였다.

• 펄프종이기술
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• 제47권1호
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• pp.75-83
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• 2015

The applicability of oil palm biomass, EFB(Empty Fruit Bunch) as raw materials for environmental friendly packaging material, pulp mold, was evaluated in this study. The changes in the water absorption properties of pulp mold by the addition of EFB and the surface treatments with PVA and AKD were analyzed by measuring the changes in the water absorption rate and the water contact angle. The each pulp mold sample was prepared by using laboratory wet pulp molder. And the water absorption rate of each samples were evaluated by measuring times for the absorption of a 0.1 ml water drop on the pulp mold sample surface. The addition of EFB to the pulp mold made of OCC resulted in the decrease of water absorption rate and the increase in the water contact angle. The surface treatments with PVA and AKD on the OCC pulp mold showed the significant reduction in the water absorption rate. However, in case of ONP pulp mold, the addition of EFB and the surface treatments with PVA and AKD showed no big changes in water absorption times. Those might be come from the finer surface structure of ONP pulp mold which were made of more finer and flexible fibers and more hydrophilic fibers. The results of this study showed the functional properties such as water absorption rate, could be controlled by the application of EFB and the treatments with AKD or PVA, especially in case of the OCC pulp mold.

• 한국재료학회:학술대회논문집
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• 한국재료학회 2011년도 추계학술발표대회
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• pp.20.1-20.1
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• 2011

The nano-sized quantum structure has been an attractive candidate for investigations of the fundamental physical properties and potential applications of next-generation electronic devices. Metal nano-particles form deep quantum wells between control and tunnel oxides due to a difference in work functions. The charge storage capacity of nanoparticles has led to their use in the development of nano-floating gate memory (NFGM) devices. When compared with conventional floating gate memory devices, NFGM devices offer a number of advantages that have attracted a great deal of attention: a greater inherent scalability, better endurance, a faster write/erase speed, and more processes that are compatible with conventional silicon processes. To improve the performance of NFGM, metal nanocrystals such as Au, Ag, Ni Pt, and W have been proposed due to superior density, a strong coupling with the conduction channel, a wide range of work function selectivity, and a small energy perturbation. In the present study, bismuth metal nanocrystals were self-assembled within high-k $Bi_2Mg_{2/3}Nb_{4/3}O_7$ (BMN) films grown at room temperature in Ar ambient via radio-frequency magnetron sputtering. The work function of the bismuth metal nanocrystals (4.34 eV) was important for nanocrystal-based nonvolatile memory (NVM) applications. If transparent NFGM devices can be integrated with transparent solar cells, non-volatile memory fields will open a new platform for flexible electron devices.

• 한국전산구조공학회논문집
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• 제23권5호
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• pp.493-499
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• 2010

해상부유식 항만부두인 모바일 하버에는 일반 지상설치식 크레인과는 다른 구조를 가진 크레인이 설치되어 있다. 그리고 상부에 설치되어 있는 크레인은 파고에 따른 모바일 하버 전체의 동적 안정성에 지대한 영향을 미친다. 본 연구는 해상상태 3의 파고에 따른 모바일 하버용 크레인의 롤링 동응답 해석에 관한 내용으로서, 이론과 수치해석 기법으로 구성된 2단계 해석절차를 적용하였다. 선형파고이론에 따라 강체로 가정한 모바일 하버의 롤링응답을 이론적으로 계산하고, 모바일하버 본체의 롤링에 따른 탄성체 크레인의 롤링 동특성을 유한요소해석으로 분석하였다. 모바일 하버 본체와 직접 접하는 파고의 동적 연계효과는 부가질량 기법으로 반영하였다.