• 한국습지학회지
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• 제18권4호
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• pp.465-473
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• 2016

본 연구는 국립생태원 캠퍼스 내에서 주요 습지로 자리잡은 국립생태원 건립 전의 논을 자연의 과정에 맡긴 습지, 물길을 내어 자발적 복원을 유도한 습지 그리고 생태적 원리에 바탕을 두고 복원 처리한 저수지, 즉 생태연못을 대상으로 식생의 정착과정을 모니터링하여 복원의 진행정도를 평가하기 위해 수행하였다. 경관변화 분석 결과, 국립생태원의 현존 습지는 주로 이전의 논에 기원하였고, 일부는 주거지와 산림에서 기원한 것으로 나타났다. 식생의 종 조성 변화에서 초기에는 경작식물이나 인간 간섭에 내성을 갖는 식물이 우세한 경향이었으나 복원이 진행됨에 따라 인간 간섭에 의해 제거되었던 식물들과 습지의 생태적 특성에 어울리는 식물들이 늘어나는 경향을 보였다. 종 다양성과 외래종 출현 비율은 둘 다 복원 사업 진행 단계에서 가장 높았고, 복원 후와 복원 전 단계 순으로 이어져 외래종의 침입이 종 다양성에 영향을 미친 것으로 나타났다. 생태연못에서 나타난 변화는 수변 완충용으로 도입한 식생의 성공적인 정착이 두드러져 향후 외부로부터 오는 환경영향을 완충하는데 크게 기여할 수 있을 것으로 판단되었다. 이상의 결과를 종합할 때, 국립생태원에 성립한 습지식생의 변화는 묵논에서 일어나는 전형적인 천이 초기과정의 모습을 보여 성공적인 복원을 이루어내고 있는 것으로 평가되었다. 최소한의 인위적 보조를 가한 생태연못에서도 복원의 과정은 성공적으로 진행되고 있다고 평가할 수 있다. 특히 다양한 생태적 기능을 발휘할 수 있는 완충식생대의 성공적인 정착은 의미있는 복원효과로 평가할 수 있다. 그러나 아직 완충식생대가 빈약한 구역에 대해서는 그 질을 개선하기 위한 적응관리대책이 요구되었다.

• 한국의류학회지
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• 제29권7호
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• pp.909-917
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• 2005

Based on the theory that formation of Korean Men's Traditional Trousers is related to Mobius strip, this study researches correlation between distinctive construction of Korean Men's Traditional Trousers and historical background based on old documents and restoration. Distinctive construction of Korean Men's Traditional Trousers are as follows. First, Korean Men's Traditional Trousers is manufactured just like Principle of Mobius strip that the square is twisted once, considering its materials' conditions. Second, Korean Men's Traditional Trousers, manufactured larger, feature cubic effect and twisted formative beauty because its waist and ankle parts are tightened with bands. Third, Korean Men's Traditional Trousers, composed of big Sapok and small Sapok in oblique, are suitable for active play due to its high functionality.

• 한국표면공학회지
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• 제34권5호
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• pp.367-377
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• 2001

Plasma is generated by electrical discharge. Most plasma generation has been carried out at low-pressure gas typically less than one millionth of atmospheric pressure. Plasmas are in general generated from impact ionization of neutral gas molecules by accelerated electrons. The energy gain of electrons accelerated in an electrical field is proportional to the mean free path. Electrons gain more energy at low-pressure gas and generate plasma easily by ionization of neutrals, because the mean free path is longer. For this reason conventional plasma generation is carried out at low pressures. However, many practical applications require plasmas at high-pressure. In order to avoid the requirement for vacuum pumps, researchers in Korea start to develop plasmas in high-pressure chambers where the pressure is 1 atmosphere or greater. Material processing, environmental protection/restoration and improved energy production efficiency using plasmas are only possible for inexpensive bulk plasmas. We thus generate plasmas by new methods and plan to set foundations for new plasma technologies for $21^{st}$ / century industries. This technological research will play a central role in material processing, environmental and energy production industries.

• IMMUNE NETWORK
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• 제9권6호
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• pp.209-235
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• 2009

There has been an explosion of literature focusing on the role of regulatory T (Treg) cells in cancer immunity. It is becoming increasingly clear that Treg cells play an active and significant role in the progression of cancer, and have an important role in suppressing tumor-specific immunity. Thus, there is a clear rationale for developing clinical strategies to diminish their regulatory influences, with the ultimate goal of augmenting antitimor immunity. Therefore, manipulation of Treg cells represent new strategies for cancer treatment. In this Review, I will summarize and review the explosive recent studies demonstrating that Treg cells are increased in patients with malignancies and restoration of antitumor immunity in mice and humans by depletion or reduction of Treg cells. In addition, I will discuss both the prognostic value of Treg cells in tumor progression in tumor-bearing hosts and the rationale for strategies for therapeutic vaccination and immunotherapeutic targeting of Treg cells with drugs and microRNA.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1992년도 하계학술대회 논문집 A
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• pp.51-54
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• 1992

Protection and control systems play a prominent part in avoiding power delivery interruptions and help to get a fast and secure restoration when a failure occurs. In order to meet the higher functional requirements on modern power system, protection speed, selectivity, sensitivity, dependability, and security are essential to ensure reliability. These functions on be satisfied by taking advantage of microprocessor and communication technologies, and digital protection relays (systems) have been developed and applied to real power system enhancing reliability and saving money. It is necessary to have a tool to analyze the functions and algorithms of digital relays for installing them to power system. The purpose of this study is to develop a digital relay simulation program to estimate digital relay performances during system faults. Components of digital protective relay including analog filter, sampling unit, digital filter, and relay logic are modeled in this program.

• 복식문화연구
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• 제11권2호
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• pp.243-252
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• 2003

The study was designed to review the changes in designs and the manufacturing methods of french hood, one of the headdresses which play an important role in showing the appearance of costume, to understand design expression techniques through manufacturing of the head dress of the western costumes, and to provide materials to exert creativity for new designs. Based on literature review and portrait study, 1 manufactured a frenchhood. I set the study cope as from the late 15 century when frenchhood was used for the first time, to the mid 16 century. For the frenchhood selected, 1 examined the hair style, the characteristics of the french hood, and the pattern first, and proceeded to manufacturing. 1 used velvet and silk for the textile as explained in the literature. And, 1 purchased such similar ornaments as shown in the pictures, making the color so similar to the original to the most. Dimensions in manufacturing were those In the literature, since the study is focusing on the reproduction of the features of the portraits. Dimensions of detailed decoration were measured using the ratio of the headdress in the portraits.

• 대한가정학회지
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• 제46권3호
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• pp.87-101
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• 2008

This research was based on a case study of a child who experienced difficulties in ego development due to her mother's compulsive and depressed behavior. Twenty-four therapeutic play sessions, including 16 sessions involving sandplay, were conducted. Based on discussions by Neumann and Kalff, the child's early psychic development and ego development were observed during these sandplay. As part af this investigation, I conducted counseling sessions in the sandbox where the atmosphere was free and safe. The sessions were based on mother-child unity with the therapist. As a result, the child exhibited restoration of mother-child unity and showed the journey of constellation of self and ego development. The results of this research indicate the effectiveness of sandplay in accelerating ego development.

• 한국동물학회:학술대회논문집
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• 한국동물학회 1995년도 한국생물과학협회 학술발표대회
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• pp.88-88
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• 1995

Microorganism are centIal core to biosphere sm1ainablity and biogeochemical cycles on this earth. Most of food, medical and pabamceutical new materials through biotechnology are derived from many kinds of microorganisms. Microorganisms are important resources of biotechnology. Beside these, micorbial diversity is key to explore the frontiers of knowledge about the strategies and limits of life. Through the micorotganisms, we can monitor the environmental changes and conditions. Moreover, the microorganismsms play a role in conservation and restoration of higher plants and animals. And we can get a lot of ecological, evolutionary knowledges from microbial models. In spite of these importances, the microbial diversity is not properly evaluted because of their unculturablity. Only 0.001 - 3 % of total bacteria in natural habitats are cultumble and the rest are viable but uncultumble. Only 3,100 species are listed up in the Bergey's Manual. Considering the symbisis and estimated numbers of insect are more than 800,000, the symbiotic microorganisms are about 1,000,000 species. Recently, by using the genetic and molecular technics, the microbial diversity is now unveiled. In this symposium, the genetic, species and ecological diversity will be given. given.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1993년도 하계학술대회 논문집 A
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• pp.152-155
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• 1993

Protective Relay in power system play a prominent part in minimizing power delivery interruptions and help to get a fast and secure restoration when a failure occurs. In order to meet the higher functional requirements in power system, the performance tests on response characteristic of protective relay is essential to ensure reliability. The purpose of this study is as follows: In order to evaluate performance of protective relay, it is intended to develop performance of digital protective relay simulator which is composed of digital protective relay part, behaviour analysis part, waveform generation part and simulation program to simulate pour system in detail.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2008년도 정기총회 및 학술발표대회
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• pp.13-18
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• 2008

The 2005 west off Fukuoka earthquake with Mjma 7.0 occurred in the vicinity of Fukuoka city with 1.4 million populations, which had been regarded as rather seismically inactive in Japan. The strong motion records by K-net indicated PGV of 64 cm/s in Fukuoka city and some condominium buildings sustained extensive non-structural damages. In this study, we conducted a questionnaire survey for residents of 8 condominium buildings located in the downtown area of Fukuoka city after the earthquake. The results indicate that damaged nonstructural walls and distorted doors disrupted evacuation route for many occupants, and furniture and content damage on upper floors became severer resulting in higher rates of human casualty. Earthquake preparedness for indoor safety was raised after the earthquake, though further safety measures can be advised. In the phase of post-earthquake emergency and restoration period, residents' management organizations play important roles, so that neighborhood activities to promote communication networks are important in urban environment with aging population.