청년기 여자펜싱선수들의 경기 종목별 심상훈련연습 특성

최태석,이동범,천영호,이근배 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4

Open-ended questionnaire was asked 135 girls senior high school fencing athletics. According to these collected and analyzed open-ended questionnaires, they give the following conclusions. Mostly, open-ended questionnaires showed girls senior high school fencing players practiced many images such as self-confidence, patience, tenacity, competition and a practice, and in an image frequency aspect, epee players showed more images than foil players. However, in image content, while epee players had a tendency of defense, foil players, in contrast, showed attack-oriented images. As our worldwide predominant fencing athletics train formally the deficient imagery discipline, it is very important to make the applicable program of imagery discipline.

한국산 바구미상과의 분류동정

우건석 서울대학교 농업개발연구소 2000 농업생명과학연구 Vol.4 No.-

The Curculionidea(Coleoptera) are mostly plant-feeding insects and some of them are regarded as plant pests. They are separated into Brentidae, Attelabidae, Anthribidae, Apionidae, Curculionidae, Rhynchophoridae, Platypodidae and Scolytidae. However, in this study, we revised all the families except Curculionidae, Platypodidae and Scolytidae. As a result of the research, we found 1 species new to science(Uncifer triangulus sp. nov.) and 22 species new to Korean fauna.

된장의 항돌연변이 효과 : 된장찌개 및 된장국의 Aflatoxin B₁에 대한 돌연변이유발 억제효과 Inhibitory Effect of Doenjang Stew and Soup on the Mutagenicity Induced by Aflatoxin B₁

박건영,문숙희,이숙희 A.R. Liss 1994 ENVIRONMENTAL MUTAGENS AND CARCINOGENS Vol.14 No.2

상대적으로 안정한 Lattice 필터 구조

지석근 群山大學校 情報通信技術硏究所 1999 情報通信技術硏究論文集 Vol.3 No.-

This paper proposes a new lattice filter structure that has the following properties. When the filter is Linear Time Invariant(LTI), it is equivalent to the celebrated Gray Markel Lattice filter. When the lattice parameters vary with time it sustains arbitrary rate of time variations without sacrificing a prescribed degree of stability, provided that the lattice coefficients are magnitude bounded in a region where all LTI lattices have the same degree of stability. It is also presented that the resulting Linear Time Varying lattice obeys an energy contraction condition. This structure thus generalizes the normalized Gray-Markel lattice which has similar properties but only with respect to stability as opposed to relative stability.

DSP를 이용한 음성인식기의 구현

진흥석,권영헌,이건상,양성일 한양대학교 이학기술연구소 2002 이학기술연구지 Vol.4 No.-

본 논문에서는 데스크탑 컴퓨터와는 독립적으로 제작된 음성인식기를 이용하여 실행활에 음성인식을 적용코자 홈 자동화 인식 실험과 자동차 명령어 인식 실험을 하였다. 일반적으로 제한된 PC상에서 이루어졌던 음성인식과정을 DSP로 구성된 작은 machine에서 이루어지도록 하였다. 인식 알고리즘은 HMM을 사용하였고, 10차의 cepstrum계수와 log scale energy를 음성의 특징파라미터로 사용하였다. 실험 결과, 홈 자동화를 위한 10개의 단어들에 대해서는 94%의 인식률을 얻었고, 자동차 명령어 인식을 위한 20개의 단어들에 대해서는 85%의 인식률을 획득할 수 있었다. In this paper, we made an speech recognition test for "home automation" and "car command" in real life using an independent speech recognition system. Genrtally, speech recognition test have done by desktop computer. However, we implement the speech recognition system in a small machine using Digital Signal Processor (DSP). In experiment, we use 10th order cepstrum coefficients and log-scaled energy as the feature vectors and Hidden Markov Model (HMM) as recognition tool. As a result, recognition rate is shown to be 94% for "home automation" and to be 85% for "car command".

한국산 관총채벌레과의 분류

우건석 서울대학교 농업개발연구소 1999 농업생명과학연구 Vol.3 No.-

More than 3,100 species of Phaleothripidae have been recorded around the world and they are divided into 12 tribes in 2 subfamilies. As the result of survey of the specimens preserved in various collections in Korea and additional collection by authors from 1998 to 1999, total 24 genera 35 species of phlaeothripidae were revised including 10 species new to Korean fauna. The descriptions of each species, illustrations for major morphological characters, distributions, host plants, depositaries and identification keys were give. Specimens which have been recorded as Haplothrips chinensis (Priesner) previously in Korea, were recognized as misidentification of H. brevitubus (Karny) on the basis of the shpe of male aedeagus. Elaphrothrips antennalis Bagnall and E. coreanus Woo which were reported that distribute in Korea were excluded from Korean fauna.

천의 Handle 形容에 관한 考察

金碩根 嶺南大學校 工業技術硏究所 1974 연구보고 Vol.2 No.1

The handle or feel is one of the important qualities of fabric. Specialists or experts in textile industry use various technical terms to evaluate the fabric feelings. It is important to study the relation between the physical properties and the handle of fabrics. But it is more important to describe sensory properties exactly and unify resembling terms so as to avoid misuse and confusion. In this paper several studies on the handle of fabrics and conducted The Matsuo's theory looks like to be considerably reasonable and well arranged. But some problems to figure out the physical properties about shearing behavier of fabric must be dissolved.

개구리에서 산-염기 평형의 계절적 변동에 관한 연구

조석현,박해근 충남대학교 의과대학 지역사회의학연구소 1984 충남의대잡지 Vol.11 No.1

The influence of environmental temperature on the acid base balance of frog(Rana Temporaria Chosenica) blood was investigated at 25℃ all the year round. pH of blood was measured by means of Artrup method and Sigaard- Anderson's nomogram using pH meter(Corning) and tonometer. Buffer value, actual bicarbonate concentration and OH^-/H^+ ratio were calculatedd by the measure buffer line, pH and CO2 gas tension which was used(low CO_2 was 4-5% and high C0_2 was 8-9% balanced with 0_2). Results obtained are as follows: 1. Buffer line was shift to the upper and-right side during winter season and the differences was statistically significant. 2. Buffer value was higher during winter season than summer value and the difference was significan (p<0.001). 3. The actual blood pH was 7.42±0.01 in September and 7.78±0.03 in January. Generally the pH was higher during winter season than that of summer. The difference between two seasons was statistically significant(p<0.05). 4. The blood PCO_2 value has a seasonal changes with low PC0_2 during winter season and the differences were statistically significant. 5. The plasma bicarbonate concentration was 17.00±1.07mM/L in September and the value were decreased with cold weather of 12.33±1.29mM/L in January. Seasonal changes were significantly different(p<0.05). It is concluded from this findings that the acid-base changes of blood in frog were related to the temperature of living habitat and the corresponding changes in the tissue energy store and buffers.

열화된 SUS 316강의 시간-주파수 해석에 의한 비파괴평가

이주석,오정환,이건찬,남기우 韓國非破壞檢査學會 1999 한국비파괴검사학회지 Vol.19 No.4

지금까지 퓨리에 변환이 신호 처리법으로 가장 널리 사용되고 있다. 그러나, 이 방법은 신호의 주파수 성분이 시간에 대하여 어떻게 변화하는지를 표현하지 못한다. 따라서, 최근 이와같이 비정상신호를 표현하지 못하는 퓨리에 변환의 단점을 보완하여, 신호의 시간과 주파수에 대한 정보를 동시에 표현할 수 있는 시간-주파수 해석법들이 개발되기 시작하였다. 본 연구에서는 인공열화된 SUS 316강의 초음파 신호를 시간-주파수 해석법으로 분석하였다. 특히, 단시간 퓨리에 변화법과 위그너 빌 분포법을 이용하여 초음파 신호의 주파수 성분과 특성을 분석하였다. Fourier transform has been one of the most commonly used tools in study of frequency characteristics of signal. However, based on the Fourier transform, it is hard to tell whether a signal's frequency contents evolve in time or not. Recently, to overcome Fourier transform fault, not to represent non-stationary signal, time-frequency analysis methods are developed and those can represent informations of signal's time and frequency at the same time. In this study, we analysed ultrasonic signal for degraded SUS 316 with time-frequency analysis method. In particular, the methods such as short time Fourier(STFT) and Wigner-Ville distribution(WVD) were used to extract frequency contents and characteristics from ultrasonic signals.

羊毛/폴리에스테르 混紡織物의 굽힘 모우먼트 緩和特性

김석근 嶺南大學校 工業技術硏究所 1993 工業技術硏究所論文集 Vol.21 No.1

The bending moment relaxation behavior of wool and wool/polyester blended fabrics under conditions of changing water content was investigated. Bending moment relaxation curve was linear with the logarism of time. Between the rate of bending moment relaxation and blend ratio of fabrics, steep linear relationship was observed at wet state, but no obvious relationship existed at dry state.