Das auf einer multimedialen und intelligenten Benutzungsschnittstelle basierte tutorielle Hilfesystem fu@r das Werkstoffinformationssystem WING-M2

김도완 Universita@t Regensburg 1996 해외박사

본 논문은 멀티모드 지능형 정보검색 시스템인(WING-M2)의 HCI를 지원하기 위하여 멀티미디어 기능과 지능형 에이젼트의 사용에 관계된다. 지능형 에이 젼트인 "사용자 플랜 인식 시스템"이 사용자의 지식 및 의도를 파악하고, "사 용자 모델 형성 시스템"이 사용자 모델을 형성하며, 필요시(자동 또는 반자동 으로) 멀티미디어 기능을 통하여 사용자의 Interaction을 지원한다. 본 시스 템의 구현은 Software Ergonomics의 검증 및 그의 올바른 이용을 평가하는데 그 목적이 있다. Tae Kwon Do is one of Korea's most important cultural legacies and it is also Korea's national skill. At present it has already been determined as one of the formal competitlon events at the 2000 Olympic Games. To practice Tae Kwon Do an athlete must have such qualities as excellent strength,flexibility, coordination and agility and excellent aerobic and anaerobic ability. But how our researches on world-level athletes'physiological and biochemical characteristics are still desperately inadiquate. We have done a lot of basic experimental research work on Tae Kwon Do athletes since 1992. We comprehensively and systematicly studied excellent Tae Kwon Do athletes'upper and lower limbs isokinetic muscular strength, aerobicand anaerobic ability and some biochemicalindicators before and after bearing a load. And we compared their aerobic ability and isokinetic muscular strength with excellent boxers' and track-and-field athletes' . Our research work suggests that compared with bozers,excellent Tae Kwon Do athletes' muscular vastus posteriores' maximal strength and high-speed muscular strength have obvious advantages. But there is no obviousdifference between the ratios of their musculi vastus posteriores' and musculi vastus anteriores' muscular strength. This is becausse during a competition between two excellent Tae Kwon Do. Kicking is the crucial factor for it has a greater power than upper limbs' blow. But such a skill is not a single motion. After hitting the target, the kicking leg must be taken back quiekly. Thus musculi vastus posteriores should have an important rolein the kicking-stopping and bending-taking back motions.Therefore, besides traditlonal daily practice.lity of rapid reaction. Our results also indicate that excellent Tae Kwon Do athletes' level of serum testosterone is reletively highwhen they are resting.The activity of their LDH keeps high during the 10 minite's immediately after exercise. LDH2 increases a little after exercise.The level of LDHs. 4.5. is high when athletes are resting and the activity of LDH4-6 increases after exercise.which suggests that Tae Kwon Do athletes should have very good anaerobic function as well as relatively high aerobic ability.There is causaIity between excellent Tae Kwon Do athletes' competitive ability and the indicators such astheir serum cortisol, cholesterol, testosterone, etc, which suggests that during Tae Kwon Do athletes'selection and training.those correlative indicators must be noticed.

High temperature deformation behavior in Mg-Sn based system

김도형 Graduate School, Yonsei University 2009 국내박사

Switching-Cell Current Source Inverter with Improved Reliability : 향상된 신뢰성을 가지는 스위칭 셀 전류원 인버터

Do, Duc Tuan 경북대학교 대학원 2021 국내박사

전류원 인버터 (CSI)는 산업 분야에서 광범위하게 사용된다. 그러나 CSI는 개방회로 문제로 인해 신뢰성이 부족하다. 따라서 안전한 동작을 위해 게이트 신호에 오버랩 타임(overlap-time)이 필요하다. 오버랩 타임은 출력전류 파형을 왜곡시키고 출력전류의 총 고조파 왜곡(THD)을 증가시켜 인버터에서 전류원의 활용도를 감소시킨다. CSI의 개방회로 문제는 스위칭 셀(SC) 구조로 완화될 수 있다. 다이오드가 있는 SC 커패시터는 스위치의 dv/dt를 줄이고 회로 개방 시 오버 슈트(overshoot) 전압을 클램프하는 데 도움이 된다. 본 논문에서는 단상 듀얼 출력(DO)과 3상 4-레그 CSI의 새로운 회로방식을 제안한다. 논문 1부에서는 단상 듀얼 출력 스위칭 셀 전류원 인버터(DO-SC-CSI)를 제안한다. 공통 및 상이한 주파수 연산의 두 가지 모드를 고려하고 변조 체계를 포함한 상세한 펄스도 제시한다. 제안된 인버터의 두 출력은 크기와 주파수 모두 독립적이다. 제안된 인버터는 2상 open-end 권선 유도 모터 구동, 스마트 마이크로그리드 어플리케이션, 태양광 그리드 연결 시스템 등과 같은 많은 어플리케이션에 적용될 수 있다. 논문 2부세어서는 H8-SC-CS로 약칭 되는 새로운 4레그 S C-CS I를 제안한다. SC 구조를 사용함으로써 전류원의 전류 통로가 항상 제공된다. 따라서 개방회로 문제가 완화되어 높은 신뢰성을 달성할 수 있다. 또한 스위치 오버랩 시간을 최소화하거나 제거할 수 있기 때문에 출력 전류의 THD가 감소한다. 본 논문에서는 스위칭 셀 전류 소스 인버터의 두 가지 새로운 회로방식에 대한 스위칭 전략, 분석, 설계를 제안하고 시뮬레이션 및 실험을 통해 이를 검증한다. Current source inverters (CSIs) are extensively used in many industrial applications. However, they have a reliability issue because CSIs suffer from the open-circuit problem. Thus, overlap-time should be inserted in the gate signals for safe commutation. The overlap-time distorts output current waveforms and increases the total harmonic distortion of output current. Moreover, it reduces the current source utilization of the inverter. The open-circuit problem in the CSIs can be mitigated with switching-cell (SC) structure. SC capacitors with diodes help to reduce dv/dt of power switches and clamp the over-shoot voltage under open-circuit faults. The new topologies of the single-phase dual-output (DO) and three-phase four-leg CSIs are proposed in this thesis. The single-phase dual-output switching-cell current source inverter (DO-SC-CSI) is presented in the first part of the thesis. Two modes of common and different frequency operations are considered and detailed pulse with modulation schemes are also presented. The two outputs of the proposed inverter are independent both amplitude and frequency. The proposed inverter can be used in many applications such as two-phase open-end winding induction motor drive, smart microgrid applications, photovoltaic grid-connected systems, etc. In the second part of the dissertation, a novel four-leg SC-CSI, abbreviated as H8-SC-CSI, is presented. By using SC structure, current paths for the input current source are always provided. Therefore, the open-circuit problem is mitigated and can achieve high reliability. In addition, THD in the output current is reduced because the switch overlap-time is minimized or removed. The switching strategies, analysis, design, simulation, and experimental verification of two novel topologies of the switching-cell current source inverter are presented in this dissertation.

2차 제어 정유압 변속기 및 그 적용에 관한 연구 : A STUDY AND APPLICATIONS OF A SECONDARY CONTROLLED HYDROSTATIC TRANSMISSION SYSTEM

DO HOANG THINH 울산대학교 대학원 2013 국내석사

In recent years, the demand of fuel is incessantly increasing while the natural resources have left accompanied by continuously increasing price. Besides, the air pollution caused by vehicles has been being a serious problem. These matters force researchers to propose new methods to economize fuel consumption as well as to find out clear energy resources, which can replace fossil energy. To solve above problems, this thesis develops a new type of hydrostatic transmission, which employs the advantages of pressure coupling principle. This approach showed good performance in saving energy in vehicle application. I addition, the proposed hydrostatic transmission was applied to wind energy conversion system. This application inherits advantages of hydrostatic transmission, such as high efficiency, low noise, less maintenance requirement… More over, the strongest point is its ability in expansion of the operating power range for a wind energy conversion system. That means the redundant power during over-speed can be absorbed and stored for using later, especially in low speed condition of turbine Therefore, the generator can be drive in rated speed and can generate more electric energy than conventional wind power energy conversion system can do. In this thesis, some control algorithm are designed and applied for speed control of vehicle as well as generator. Simulations and experiments were carried out to verify performance of the proposed systems and the effectiveness of the controllers. The simulation results of vehicle application indicated that the pressure coupling configuration gave better performance in comparison to flow coupling configuration.

Entwicklung bifunktionaler retroviraler Vektoren zur Untersuchung der Pathogenese myeloischer Systemerkrankungen und zur Evaluierung therapeutischer Zielstrukturen

Doğan, Yıldırım Universitat Hannover 2008 국내박사

Implicit induction of memory updating

도종록 Graduate School, Yonsei University 2016 국내석사

Effect of Butene-1,4-diol/Ethylene Diamine Molar Ratio on the Properties of Emulsifier-/NMP-Free Crosslinked Waterborne Polyurethane-Acrylic Hybrid Emulsions

하도영 부산대학교 대학원 2019 국내석사

Stable emulsions of waterborne polyurethane-acrylic hybrid (WPUA, soft segment content 58.7~58.9 wt%, dimethylol propionic acid: 23.8 mol%/6.6 wt%)/n-butyl acrylate (BA)/methyl methacrylate (MMA)/glycidyl methacrylate (GMA) (weight ratio of BA/MMa/GMA: 4/3/3) hybrid materials containing 20 wt% of acrylic hybrid content were successfully prepared by an emulsifier-/solvent-free prepolmer mixing process. This study examined the effect of butene-1,4-diol/ethylene diamine molar ratio on the stability and viscosity of the hybrid emulsions, the tensile properties/dynamic mechanical thermal properties of hybrid film samples.

Doing religious education for the Vietnamese children using the pedagogy of love

Do Thi Tuong Vi 이화여자대학교 신학대학원 2016 국내석사

On what perspective should we approach children to share the Gospel of love? How can we carry out God’s mission to the little human being effectively? I am so much convinced that doing missions is to make God’s will known to this world. Doing missions is not only converting people to Christianity but also participating in the world movement to share love in order to make the world a better place. Christians are not called to only stay in the church and pray. We are called to go into the world of plurality and work with other people regardless of their religious statuses. Our mission is to live and share in love. To children, doing mission is to help them grow up in love and well-being as they deserve with proper education. It means we will teach them to honor the Creator, show them how live in harmony with nature and others, and set an example of respecting differences. Helping children to grow up in love is to teach them that we are creatures of love and attempt to live in love with others. By nurturing a child’s well-being, the child is able to develop naturally into who he or she is to know what he or she deserves. Helping children to learn about their Creator is growing them into humility and teaching them to live with purpose. Then, as a truly human being, a child has the ability to live in harmony with nature and others and to respect the diversity of creation. In Vietnam, the mission to redeem children for God is becoming an urgent one. Teaching non-Christians to respect the differences is teaching them to respect Christianity. Because of the prejudice against Christianity as foreign, western and enemy religion, this way of education can shift people’s unilateral perspectives from religious discrimination to religious openness. This study convinces that doing mission is not directed to other religions in order to overcome or displace them but participate in God’s work in the world of overcoming all that is evil. Doing educational ministry is doing God’s mission as it is building up and strengthening students’ identities in their relationship with God and each other, making them as whole in their reconciliation and harmony into communion with God, communion with people, and communion with the entire creation. Religious education confined within the walls of the church is not enough anymore. It is the time to be partners and co-workers with the whole of humanity to carry out God’s mission to our world, and especially to our neighbors. As the Vietnamese church is strictly exclusive, we are now challenged to reconstruct the role that theology and mission have in response to this emerging paradigm. In conclusion, doing mission in Vietnam is not separate from taking part in education transformation which is based on Christian love. In this study, the attempt is to implement religious education used the pedagogy of love to transform children education. It aims to contribute to the education renewal movement an emerging understanding of teaching children. This study does not claim to have a precise solution for the educational crisis in Vietnam. However, this is a modest attempt to contribute to the further study and dialogues about the reconstruction of Children’s Education in Vietnam. 우리가 어린이들에게 사랑의 복음을 전하기 위해서 어떠한 관점을 가지고 다가가야 하는가? 어떻게 하면 어린이들에게 하나님의 선교를 더 효과적으로 수행할 수 있을까? 나는 선교란 하나님의 뜻을 이 세상에 알리는 것이라는 것에 대한 확신이 있다. 선교는 단순히 기독교로 개종시키는 것이 아니라 세계의 움직임에 참여하여 사랑을 나눔으로써 좀 더 나은 세상이 되도록 하는 것이다. 기독교인들은 교회에서만 머물며 기도하도록 부름 받지 않았다. 우리는 종교적 신분과 상관없이 다양한 사람들과 동역하며 다양한 세상 속으로 들어가도록 부름을 받았다. 우리의 선교는 삶으로 사랑을 나누는 것이다. 아이들을 대상으로 하는 선교란 그들이 마땅히 받아야 할 사랑과 적합한 교육환경 속에서 자라도록 돕는 것이다. 이는 그들이 창조주에 대한 존경심을 가지고, 자연과 어떻게 화합을 이루어 살아가는 지를 보여주고, 나와 다름을 존중하는 태도를 갖도록 하는 것이다. 아이들이 사랑의 환경 속에서 자라도록 돕는다는 것은 우리가사랑의 창조물임을 알고 다른 사람들과도 사랑하며 살아가는 시도를 해야 함을 그들에게 가르치는 것이다. 행복한 아이로 양육하기 위해서는 그들이 누구이며 그들의 마땅한 가치에 대해 자연스럽게 발견하도록 해야 한다. 아이들에게 그들의 창조주가 누구인지에 대해 배우도록 돕는 것은 그들을 겸손하고 목적이 있는 삶으로 살도록 가르치는 것이다. 그럴 때 어린이는 한 온전한 인간으로서 자연과 화합을 이루며 살아가고 다양한 창조물들을 존중하며 살아갈 수 있는 능력을 가지게 된다. 베트남에서 하나님의 선교를 통해 아이들을 구원하는 일은 점점 급박한 일이 되어가고 있다. 비기독교인에게 다름을 존중하도록 가르치는 것은 기독교를 존중하도록 가르치는 것이다. 서양의 영향으로서의 기독교에 대한 편견은, “적대나라의 종교’라는 편견이 있기 때문에 사랑을 중심으로 한 교육방법이 사람들의 종교적 차별로 인한 일방적인 관점을 변화할 수 있다. 이 연구에서 선교란 다른 종교로 대체하는 것이 아니라 이 세상의 악에 대적하는 하나님의 일에 동참하는 것이라고 말한다. 교육목회란 하나님과의 관계를 통해 학생들의 정체성을 확립하고 하나님과 화해와 교제를 통해 화합을 이루며 사람들 및 창조세계와 교제를 하는, 하나님의 선교이다. 교회 안에서만 국한된 종교교육은 더 이상 충분하지 않다. 동역자들과 파트너들 및 온 인류와 함께, 특별히 우리의 이웃들에게 하나님의 선교를 이 세상에 수행해야 할 때이다. 베트남교회가 배타적이기 때문에, 이 새로운 패러다임을 통해 신학과 선교의 역할을 재건하는데 응답하려고 한다. 결론으로, 베트남에서의 선교란 기독교 사랑에 기초한 교육변화를 이루는 것과 분리되지 않는다. 이 연구에서 시도하고자 하는 것은 사랑의 교육학으로 아동교육을 변화시키는 것을 시도하는 것이다. 이 연구는 교육개발운동과 어린이 교육에 대한 이해에 공헌하는데 그 목적이 있다. 이 연구는 베트남의 교육적 위기에 대하여 정확한 해결책이라 주장하는 것이 아니다. 그러나, 베트남의 아동교육의 재건에 공헌하기 위한 연구이자 겸손한 시도이다.

Unveiling Kimchi's Terroir through Comprehensive Analysis of Geographical Effects on Metabolites, Microbiota, Ingredients, and Sensory Profiles

Do-Yeon Lee 고려대학교 대학원 2024 국내석사

The concept of terroir is inherently linked to the relationship between the characteristics of fermented foods and their unique geographical origins. The objective of this study was to investigate the differences in the fermentation dynamics of kimchi, a fermented food, based on its production region, using omics methodologies and incorporating the terroir perspective. A total of 108 kimchi samples were collected from five different provinces in Korea (Gyeonggi-do, Gangwon-do, Chungcheong-do, Gyeongsang-do, and Jeolla-do) for the analysis of their recipes, metabolites, and microbial composition. Subsequently, kimchi was prepared following regional standard recipes, and its sensory characteristics were investigated. The results of this study revealed distinct differences in both the metabolite profiles of kimchi samples obtained from southern and northern regions and the flavor profiles of kimchi samples prepared according to their respective regional recipes. Furthermore, a total of 77 factors were exhibited correlations with the regional characteristics of kimchi. Among them, 18 ingredients (including salted anchovy and seaweed), 7 quality indicators (such as salinity and moisture content), 14 genera of microorganisms (mainly Tetragenococcus and Weissella belonging to lactic acid bacteria), and 38 metabolites contributed to the characteristics of kimchi based on its region of origin. This is the first study to investigate the terroir effect of kimchi by identifying variations in ingredients, metabolites, microbes, and sensory characteristics based on the region of production and elucidating the correlations between these key factors.

(Die)Gattungsgliederung der Ochnaceae DC. mit besonderem Hinblick auf die Unterfamilie Sauvagesioideae Lindl

Amaral, Maria do Carmo E. do Univ. Hamburg 1990 국내박사