http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Kyung-Chai (검색결과 381 건)
- 무료
- 기관 내 무료
- 유료
-
-
최경주,김종택 경북대학교 공과대학 1975 工大硏究誌 Vol.4 No.-
n-butyraldehyde 용매 속에서 중합된 PVC 단결정 mat의 결정구조를 i.r. , X선 회절과 2차원의 Fourier 합성으로 밝혔다. 공간군은 Pacm(D^11_2h)이었고, 다위격자 상수 a=10.15A˚, b=5.17˚, c=5.16A˚인 사방정계이었다. The crystal structure of PVC(poly vinyl chloride) single crystal mat which was poly merized in n-butyraldehyde was determined by i.r., X-ray diffraction technique and two-dimensional Fourier synthesis. The space group is Pacm(D^11_2h). It is orthorhombic, with unit cell parameters; a=10.15A˚, b=5.17A˚, c=5.16A˚.˙
-
β-Difluoro-α-trimethylsilyl-γ-lactam 유도체의 합성
채규윤,곽경철,문재정,최장호 圓光大學校 基礎自然科學硏究所 2000 基礎科學硏究誌 Vol.18 No.1
α-위치만 선택적으로 difluoromethylene기가 도입된 α.α-difluoro-γ-trimethylsilyl-γ-lactam 유도체(6)들은 ethyl α.α-difluoro-γ-trimethylsilyl-γ-iodopentanoate(4)는 일차아민 유도체와의 반응으로부터 비교적 편리한 작용조건과 비교적 좋은 수득률로 합성하였다. The target of α.α-difluoro-γ-trimethylsilyl-γ-lactam derivatives(6) with selectively in corporated difluoromethylene on α-position were readily prepared form reaction ethyl α.α-difluoro-γ-trimethylsilyl-γ-iodopentanoate(4) and primary derivatives in moderate yields.
-
金在慶 대구교육대학교 1969 論文集 Vol.5 No.-
In this study, it was revealed that the primary object of astronomy education should aim at helping form a synthetic view of nature, based on both the history of natural science and the first item of the object of the natural science education explained in the primary school curricula and the best way to reach such an object should be to have the movement of the earth dealt with as main subject. The problems to be aroused in teaching the movement of the earth were studied centering on the Teacher's Guide and, to solve them, a conclusion was arrived at that teaching should be performed, with relativity as main conception. This kind of attempt can be seen made in the SCIS Elementary Science. Here I made a tentative plan particularly on the processes of using the fixed star as reference frame and teaching its superiority.
-
차경환,박수홍,송도훈,이채봉 東西大學校 1999 동서논문집 Vol.5 No.-
본 연구에서는 원격 화상회의 시스템 등에서 Camera를 자동적으로 제어하기 위해 화자의 음성신호를 4개의 마이크폰 배열(Microphone Array)로 수음하여 그 신호에 의해 화자의 위치를 추정한다. 마이크로폰으로 수음한 음성신호의 TDE(Time Delay Estimation)를 계산할때 그 연산량을 감소시키기 위해 AMDF알고리즘을 사용한다. 각 마이크로폰 출력신호에 대해 amdf 알고리즘으로 시가니연을 구하고 DOA(Direction of Arrival)를 계산한다. 다양한 조건하에서 음성신호로 실험한 결과, AMDF 알고리즘을 이용한 화자위치 추정의 정확도가 기존의 cross-correlation 방법에 비해서 우수한 성능을 나타내었다. This paper decribes the estimation of speech source using four microphones array singnal for the automatic control caramera position in the teleconference system. To reduce the calculation rate, AMDF algorithm is empoloyed for the TDE(Time delay Estimation) of the speech signal with microphone. The time delay is calculated using AMDF algorithm of each microphone output signal and DOA is obatained. According to the estimation of speech source in speech signal/아/under various conditions. AMDF-technique-based method yields superier performance to the one with cross-correlation method.
-
한경희,채인숙,박정숙,최미숙,정순둘 한국식생활문화학회 2002 韓國食生活文化學會誌 Vol.17 No.5
The purpose of this study was to evaluate the diet quality of the menus delivered by 17 free meal service centers for the low-income home-bound elderly in Chung- cheong buk-Do. Statistical data analysis was compleleted using the SPSS package program for descriptive analysis, T-test, and ANOVA. The meals offered by free meal service centers were not met the 1/3 recommended dietary allowances in calcium and vitamin B_2. There were significant differences between dependent variables(nutrient content, nutrient density, nutrient deficiency, NAR, MAR, food group intake patterns) and independent variables (operation type, operation status, operation period, nutritionist, food cost).
-
액체소듐속에서 소듐-물반응에 의한 재질의 Wastage현상
정경채,정지영,김병호,김태준,최병해,최종현,김의식 한국공업화학회 2003 응용화학 Vol.7 No.1
In this study we observed and analyzed the corrosion phenomena in leak site and the effect on temperature at the target surface of heat transfer tube material by sodium-water reaction through water leakage in liquid sodium atmosphere. Surrounding of leak hole of the specimen was damaged by the wastage phenomena due to corrosion and erosion of material, and hole size by damage of leak site was extended from 150㎛ to about 200㎛. Also, the damaged size appeared in the target surface was observed to about 1000㎛ diameter. The temperature of target surface increased about 70~80℃ by the heat of sodium-water reaction even with the small leakage of 15㎖ water. From the results of EPMA and EDX analysis, damaged area are found to covered with complex compounds such as (NaOH+Na_2O) FexOy or (NaCrO_2+nA_2CrO4) mixed up with the sodium oxides by sodium-water reaction and the Fe or Cr element by matrix of tube sodium oxides by matrix of tube material.
-
단일 주파수에서 선행음 및 후속음이 음원의 방향지각에 미치는 영향
이채봉,김경미,차경환 東西大學校 1999 동서논문집 Vol.5 No.-
In this paper, the effects leading and following tone with single frequency on sound localization were investigated. The sound with level difference and ISI(Inter Stimuli Interval) were used. The width of test sound was 2ms, leading tone and following tone were 10ms and 1kHz was used. The arrived time difference of subject's ears 0.5ms. We compounded with four kind of the level difference 0,-10,-15,-20dB interval for the one ISI. We knew the fast that leading tone had more effect on sound localization than following tone.
-
강경아,이기준,정채영 조선대학교 통계연구소 1999 統計硏究所論文誌 Vol.1 No.1
In this paper, implemented the algorithms that recognize the image learning the standard data by Back propagation and Hopfield network of neural network Back propagation learning method needs more hours in carrying out one-time learning due to the hopfield algorithm, but in the rate of detection per learning frequency, back propagation shows an excellence. Back propagation learning algorithm requires 25 seconds to obtain the rate of 97% detection of the image, but to detect the image over 99%, the time of 1 minute and 20 seconds is required and while the rate of image recognition is very high in initial learning, it is delayed from over 97%. To the contrary, in the case of hopield network, more hours are required to recognize 97% of the image than back propagation, but in recognizing the image over 99%, it requires shorter hours than back propagation.
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
