• 한국물환경학회지
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• 제23권6호
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• pp.934-944
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• 2007

Fine suspended solids (SS) induced into a reservoir after flood events play important ecological and water quality roles by presenting persistent turbidity and attenuating light. Thus the origin and physical features must be characterized to understand their transport processes and associated impacts, and for the establishment of watershed based prevention strategies. This study was aimed to characterize the physical properties of the SS sampled from Daecheong Reservoir and its upstream rivers during flood events. Extensive field and laboratory experiments were carried out to identify the turbidity-SS relationships, particle size distributions, settling velocity, and mineral compositions of the SS. Results showed that the turbidity-SS relationships are site-specific depending on the locations and flood events in the system. The turbidity measured within the reservoir was much greater than that measured in the upstream rivers for the same SS value. The effective diameters ($D_{50}$) in the rivers were in the range of $13.3{\sim}54.3{\mu}m$, while those in the reservoir were reduced to $2.5{\sim}14.0{\mu}m$ due to a fast settling of large particles in the rivers. The major minerals consisting of the SS were found to be Illite, Muscovite, Albite, and Quartz both in the rivers and reservoir. Their apparent settling velocities at various locations in the reservoir were in the range of 0.06~0.13 m/day. The research outcome provides a fundamental information for the fine suspended particles that cause persistent turbidity in the reservoir, and can be used as basic parameters for modeling study to search watershed based optimal control measures.

• 한국문헌정보학회지
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• 제43권2호
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• pp.299-328
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• 2009

본 연구에서는 네이버, 다음, 알라딘, Amazon, Google, KERIS, LibraryThing, OCLC 등 8개의 도서용 Open API 현황을 비교 분석하였다. 그리고 C대학교 도서관의 서지레코드에서 '광학'(DDC 535) 분류 167건의 표본 서지레코드를 선정하여 Open API의 활용성을 비교 분석하였다. 이러한 분석결과를 토대로 Open API를 이용한 서지레코드의 접근점 기능 확대와 목록 확장에 유용하다고 판단되는 12개의 Open API 적용 모형을 실험적으로 구현하였다. 또 통합서지용 KORMARC 001, 010, 012, 020, 035, 246, 505, 520, 850, 856 필드들을 대상으로 Open API를 이용하여 서지레코드의 접근점 기능 확대와 목록 확장방안들을 고찰하였다. 마지막으로 표본 서지레코드의 OPAC 검색결과 간략화면과 상세화면을 대상으로 Open API를 이용하여 목록 확장방안들을 예시로 구현하였다.

• Tuberculosis and Respiratory Diseases
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• 제53권2호
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• pp.209-215
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• 2002

중증의 객혈에 대한 치료로써 기관지동맥 색전술을 시행한 후 일시적인 양측 시력 상실이 관찰되었으나 2-3일이 지나면서 점차적으로 호전되었다. 이는 혈관조영술상 보이지 않는 우좌단락을 통한 색전성 뇌허혈 또는 조영제의 신경독성에 의한 후두엽 손상으로 발생된 일시적인 피질맹으로써, 보존적인 치료 후 호전되었기에 문헌고찰과 함께 보고한다.

• 디지털콘텐츠학회 논문지
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• 제18권4호
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• pp.753-760
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• 2017

본 논문에서는 무선센서 네트워크 환경에서 스케줄링 기법 중 큐롬(Quorum)기반 이웃 노드 탐색 프로토콜을 개선한 결합 큐롬기반 스케줄링 기법을 제안한다. 본 논문에서 제시하는 방법은 서로 다른 크기를 갖는 두 개의 큐롭기반 스케줄링을 결합하여 새로운 스케줄을 생성하는 방법이다. 기존의 그리드기반의 큐롬 스케줄링 방법은 주어진 스케줄의 주기 내에서 2번의 만남을 보장하는 방법이지만 두 개의 그리드를 결합하여 생성된 스케줄방법은 두 개의 스케줄이 만나는 횟수가 증가한다. 제안하는 방법과 토심(TOSSIM) 시뮬레이터를 사용하여 그리드기반의 스케줄링 방법인 큐롬, 써치라이트 및 헤디스와 성능을 비교하였다. 실험에서 모든 센서 노드가 서로 다른 듀티 싸이클을 가정하여 실험을 수행하였다. 실제 실험결과 제안하는 방법이 기존의 다른 이웃 노드탐색 프로토콜에 비해 우수한 성능을 보였다.

• Journal of Ginseng Research
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• 제33권4호
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• pp.249-255
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• 2009

The oxidation of glycolate to glyoxylate, a key step in plant photorespiration, is carried out by the peroxisomal flavoprotein glycolate oxidase (EC 1.1.3.15). To investigate the altered gene expression and the role of GOX in ginseng plant defense system, a cDNA clone containing a GOX gene designated as PgGOX was isolated and sequenced from Panax ginseng. The cDNA was 692 nucleotides long and have an open reading frame of 552 bp with a deduced amino acid sequence of 183 residues. A GenBank BlastX search revealed that the deduced amino acid of PgGOX shares a high degree homology with the Glycine max (95% identity). In the present study we analyzed the expression of PgGOX under various environmental stresses at different times using real time-PCR. The results showed that the expressions of PgGOX increased after various treatments involving salt, light, cold, ABA, SA, and copper treatment.

• 정보관리학회지
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• 제2권1호
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• pp.70-95
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• 1985

본 연구의 목적은 다음의 두 가설을 규명하기 위함이다. 첫째, 온라인 서비스의 특성은 근본적으로는 정보축적 매체의 변형에 따른 참고봉사의 자동화 연장이므로 전통적인 도서관 환경에 온라인 정보검색 서비스를 도입할 경우 궁극적으로 봉사업무를 실행하는 곳은 참고업무 부분이 된다. 따라서 데이터베이스 검색 서비스는 재래식 참고봉사를 보충하고 개선시키면서 완전히 통합될 때에 참고업무 전반에 걸쳐 변화를 줄 것이다. 둘째, 인쇄 출판물 자료속에서 탐색 제한을 받던 참고질문이 데이터베이스 검색 서비스로 가능해 지면, 서비스의 질적 향상과 함께 참고사서의 능률을 증대시킬 것이다. 또한 참고사서에 대한 이미지 향상과 전문직에 대한 인식 고취는 도서관 이용자를 증가시킬 것이다. 이러한 영향을 밝히기 위하여 "DIALOG" 데이터베이스 검색 서비스를 제공하고 있는 4개 전문도서관의 실태를 조사, 분석하여 참고하였다.

• 아동학회지
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• 제2권
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• pp.55-66
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• 1981

Research on children should be perferably made in reference with the past thinking if it is to be affirmed by the present and to predict the future. In this respect, Buddhism, which is one of the major original thinkings in the Orient as well as the most influential religion upon Koreans daily lives and attitudes, deserves to be researched in the light of education of children. In this thesis, I have made a trial to delve into the original Buddhistic scriptures to find out Buddha's outlook on home children and arrived at the following conclusions: 1. Concerning human development stages, Buddha regarded the starting point of human life from fertilization instead of birth, even at that ancient time, and the fetal life was devided into 4, 5, or 8 stages. 2. In spite of the numerous scriptures by Buddha, very little is written about children, and even these teaching did not regard the child as an independent entity. In addition, since Buddha was a person of superior enlightenment, he did not regard the age of human beings as of great importance. 3. On the relationship between parents and children, Buddha warned the extra ordinary attachment of parents toward children, because such attachment would be an obstacle in the search of truth. This idea was originated from his thought that the relationship between parents and children was not a single fixed one but of unlimited variation through numerous life times of reincarnation. This idea gives some illumination upon the problems of today's education where parent's exclusive attachment to their children and over-protection are hindrance for successful education. 4. Buddha put emphasis on parents' social duty, by which he meant that parents should care and accept not only their biological children but all children and all living things as if they were their own children. 5. Regardeding the children's role to their parents, Buddha taught that children should respect and support their parents under any condition. Buddha also emphasized that true filial piety was to help parents to improve their religious status by helping them attain the truth, morality, and wisdom. It is my intention to investigate Buddha's View tin children of entering pristhood.

• 전기학회논문지
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• 제64권3호
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• pp.458-464
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• 2015

This paper proposes a portable 3-D scanning technique using a laser pointer. 3-D scanning is a process that acquires surface information from an 3-D object. There have been many studies on 3-D scanning. The methods of 3-D scanning are summarized into some methods based on multiple cameras, line lasers, and light pattern recognition. However, those methods has major disadvantages of their high cost and big size for portable appliances such as smartphones and digital cameras. In this paper, a 3-D scanning system using a low-cost and small-sized laser pointer are introduced to solve the problems. To do so, we propose a 3-D localization technique for a laser point. The proposed method consists of two main parts; one is a fast recognition of input images to obtain 2-D information of a point laser and the other is calibration based on the least-squares technique to calculate the 3-D information overall. To verified our method, we carry out experiments. It is proved that the proposed method provides 3-D surface information although the system is constructed by extremely low-cost parts such a chip laser pointer, compared to existing methods. Also, the method can be implemented in small-size; thus, it is enough to use in mobile devices such as smartphones.

• 건축역사연구
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• 제27권3호
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• pp.15-26
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• 2018

As a result of reviewing various documents and existing researches, since the late Goryeo period, the most active period in the Ondol(溫突, Korean floor heating system) facilities is the 17th century. The phenomenological reason was recovering the buildings destroyed by the Japanese Invasion of Korea in 1592(壬辰倭亂) & the Manchu War of 1636(丙子胡亂), but the underlying cause was an abnormal climate in which a pair of summer and winter cold continued. In the 17th century, as the Ondol facilities grew rapidly without distinction between regions and classes, the supply and demand of fuel caused economic and natural environmental problems. And a negative and positive view on Ondol was suggested. Since the middle of the 18th century, when the demand and supply of Ondol reached its peak, which could no longer increase, a new awareness of Ondol began to grow. The room was called the Panbang(板房) and the Ondol, depending on the material that made up the floor. It was considered natural to have the Ondol from this time on. The Incan(因間) and Jo(竈) that were made to burn were started to be recorded as a kitchen, regardless of size and function. Changes in social awareness of Ondol have led to concerns about heating efficiency. A variety of architectural explorations were conducted. Such a search was later realized in concrete architectural form. There is a double Ondoll structure, and the column spacing is reduced compared to the previous one. The heat buffer space is formed around the Ondol room, and the double window can control the light and the air going in and out.

• International Journal of Industrial Entomology and Biomaterials
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• 제27권2호
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• pp.219-227
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• 2013

The purpose of this study was to quickly and effectively identify the Nosema disease of bumblebees in Gangwon Province in Korea. Bumblebees are crucial pollinators of various crops, and microsporidia are the critical pathogens of these hosts. When bumblebees are infected with Nosema bombi, their abdomens can become distended. Paralyzed and infected workers often become sluggish and die early. We have identified the morphology of the microsporidium by light and electron microscopy, and found it to have fairly small oval spores, as has been described previously in many other articles. For the specific and sensitive diagnosis of the microsporidian parasite N. bombi in bumblebees, we have developed an improved method of the polymerase chain reaction (PCR) for expeditious diagnosis. Two pairs of primers were tested on N. bombi and the related microsporidia Nosema apis and Nosema sp., both of which infect Bombus ignitus and Bombus hypocrita sapporoensis. Furthermore, we have verified and analyzed the 16SrRNA sequence data of N. bombi in bumblebees by using the Basic Local Alignment Search Tool (BLAST) server at the National Center for Biotechnology Information.