• 화약ㆍ발파
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• 제9권4호
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• pp.22-31
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• 1991

NATM technic had been applied to Nakaya tunnel of Sin kan express R.R lines in 1975. on the worst expandable geological conditions, application of NATM method was carried out good result. Measurement data which include convergencymeter, inclinometer, extensometor load-cell, strain gage data of shotcrete stress and steel arch. was explained with slides. Induced NATM technic has been improved since 1975 as follows, specially adhesive method of shotcrete instead of spray method such as tunnel swift lining Sliding press lining, clean lining by pumping and sweeping tote lining ets.

• 한국통신학회:학술대회논문집
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• 한국통신학회 1984년도 춘계학술발표회논문집
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• pp.33-36
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• 1984

An underwater communication technic using AM modulated ultrasonicwave was studied. The experiment were performed in the ahechoic water tank with 60KHz carrier wave and the frequency response of the system by demodulated signals were measured varing the degree of modulation and distance between transmitter and receiver. The bandwidth of transmitted signals was limited by the acoustic characteristics. As the result, it was found out that this kind of system is applicable to the underwater speech communication.

• 전기저널
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• 12호통권132호
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• pp.16-22
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• 1987

• 전기저널
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• 2호통권86호
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• pp.38-41
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• 1984

• 대한약리학회지
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• 제1권1호
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• pp.47-52
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• 1965

There are several methods used for screening and evaluating anti -inflammatory agents. Among these, 'Granuloma pouch' technic introduced by Hans Selye is considered as a simple and reliable method. The procedure of 'Granuloma pouch' technic is as follows: Rats were used as experimental animals. An air pocket was produced in the subcutaneous tissue of the mid-dorsal portion between the shoulders by the injection of 25ml of the air which was immediately followed by injection of 1 ml of 1% croton oil as irritant. Inflammatory exudate accumulated in the pouch during the succeeding 14 days. After sacrificing the rats on the last day of the experiment, the amount of the exudate in the pouch and the weight of the granuloma tissue was measured. The author observed and compared the anti-inflammatory activities of the several steroid compounds when they are given by different methods. 1. In the control rats, the amount of inflammatory fluid and the weight of the granuloma tissue after 14 days were 9ml and 3gm respectively. 2. Injection of hydrocortisone 1.5mg subcutanenusly, 24 hours prior to pouch formation into the area where the pouch is to be formed, successfully prevented the inflammatory processes. 3. Injection of hydrocortisone 1.5mg in the air pocket formed 24 hours prior to croton oil injection was ineffective. 4. Injection of hydrocortisone into the pouch at a distance of 5mm apart from the pouch formation did not prevent the development of inflammation. 5. Anti-inflammatory activities of hydrocortisone administered systematically(injected intramuscularly into the area which is not related to the area of pouch formation) for 10 days were proportional to the doses of hydrocortisone administered. 6. DOCA, testosterone, and progesterone did not show the anti-inflammatory activity.

• 대한치과보철학회지
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• 제37권2호
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• pp.167-184
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• 1999

The purpose of this study was to evaluate and compare the at of denture bases processed by injection pressing technic using laser scanner of reverse engineering technic. The auther duplicated 20 maxillary edentulous models and 20 mandibular edentulous models, which were scanned on HYSCAN 45C 3D BCANNER(Hymarc Co., Canada). The scanned data were stored in the personal computer using SURFACER (Imageware Co. U.S.A.) software program. After 40 dentures were cured by PERform Inkovac system, SR-Ivocap system, Palajet system, and Sulfon system, they were stored in water at room temperature fir 24 hours. The dentures were scanned on HYSCAN 45C 3D SCANNER(Hymarc Co., Canada). The scanned data were stored in the personal computer using SURFACER (Imageware Co., U.S.A.) software program. By overlapping two images using the same program, the fit between two surfaces was scaled by positive and negative errors. The obtained results were as follows 1. In the upper denture, most of the positive errors occurred on the lingual side of anterior alveolar ridge and the negative errors were on the flange of denture bases. 2. In the lower denture, most of the positive errors occurred on the inner side of lingual flange and the negative errors were on the border of anterior labial flange areas, 3. There were no statistical differences among the positive errors of the four types of injection denture curing methods and also no statistical differences between negative errors except only in negative maximum errors. 4. In PERform system and SR-Ivocap system, they have the tendency of inaccurate at of lower denture bases comparing to that of upper denture bases. 5. The negative error scales were greater than the positive error scales in all types of injection denture curing methods.

• 한국산학기술학회논문지
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• 제10권4호
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• pp.785-794
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• 2009

워게임모델에서 가상환경격자정보에 관한 개선과 구축기법을 연구하였다. 가상환경자료는 지상, 해상, 공중으로 구분하여 관리 및 운용한다. 가상환경자료는 지리정보와 지형형태정보로 구축 및 관리한다. 지리정보는 격자(Grid) 형태로서 격자위치좌표와 수심을 파일로 관리한다. 그 격자정보파일의 수심값을 이동가능대표값(GCV)으로 개선하고, 조석차가 심한지역에 대해서 동적가상환경구축기법을 제안하였다. 제안된 시스템 의 구현 및 시험을 통하여 동적 가상환경을 워게임모델에 적용이 가능하다는 것을 알 수 있었다.

• 트랜스-
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• 제5권
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• pp.49-64
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• 2018

미디어 학자 마샬 맥루언은 구텐베르크 은하계라는 단어를 통하여 인쇄술이 인간에게 부여한 새로운 환경을 논하였다. 구술, 필사, 인쇄로 이어진 미디어의 진화는 인간의 삶에 있어 부수적인 존재였던 미디어를 하나의 환경으로 확장시켰고, 구텐베르크 은하계 속에서 인간의 삶은 매우 다르게 변화하였다. 본 연구는 구텐베르크 인쇄술의 개발이 인간의 삶을 넘어 음악, 특히 낭만주의 음악에 어떠한 영향을 끼쳤는지에 관하여 집중해보고자 한다. 인쇄술이 낳은 가장 대표적인 미디어는 책이라 할 수 있다. 같은 공간 아래 있을 때 정보 전달이 수월했던 구술, 필사와 달리 상대적으로 공간적 제약으로부터 자유로운 인쇄술의 개발은 지식과 정보를 그 질과 양에 있어 획기적으로 변화시킨다. 이전의 정보가 인간의 생활과 밀접한 형태를 띠고 있었다면, 책 속의 지식과 정보들은 신화의 세계와 같이 실생활을 넘어선 다른 세상으로 지식의 영역을 확장시킨다. 즉, 눈에 보이지 않는 세계로 지식의 영역을 확장시킨 것이다. 이와 같은 지식의 변화는 자연스레 인간의 사고를 확장시켰고, 사고의 확장은 곧 근대 서양 사회의 모든 분야에 영향을 끼친다. 인쇄 악보를 매개로하여 점진적으로 대중화되던 음악계 또한 예외가 아니었다. 인쇄술이 형성시킨 구텐베르크 은하계는 실용 음악에 가까웠던 이전의 음악 형태와 달리 음악 안에 신비와 환상의 세계를 심어놓았다. 그리고 이러한 현상은 낭만주의라는 하나의 흐름을 형성시킨다. 본 연구는 구텐베르크 은하계가 변화시킨 음악, 특히 낭만주의 음악에 집중하여, 미디어와 음악의 상관성을 증명해보고자 한다.

• Clinical and Experimental Reproductive Medicine
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• 제2권1호
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• pp.43-46
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• 1975

• 대한치과의사협회지
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• 제15권11호
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• pp.741-742
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• 1977