• Journal of the Korean Data and Information Science Society
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• 제21권6호
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• pp.1071-1079
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• 2010

10종경기 전 종목에 관한 효율적이고 포괄적인 동시훈련은 불가능하다는 Tidow (2000)의 지적처럼 힘, 민첩성, 속력, 지구력 및 개개인의 심리적 특성을 요구하는 10종경기에서 선수들이 가지고 있는 체력과 기술을 각 종목에 효율적으로 안배하여 활용할 수 있는 능력은 매우 중요하다. 본 연구에서는 1990년 이후 거행된 올림픽과 세계육상선수권대회에서의 10종경기 기록을 이용하여 세계적인 선수들은 경기운영을 어떻게 하는지 선도표, 대응분석, 정준상관분석 및 상관분석을 이용하여 살펴보았다. 그 결과 최상위권에 속하는 선수들은 스피드가 매우 뛰어나며 투척경기에도 강하나 지구력 경기에만 약점을 보였으며 경기력 패턴이 뚜렷하게 나타났다. 또한 상위권 선수들은 도약경기에 강세를 보이고 최하위권 선수들은 지구력 경기에 강점을 보였다.

• 전자공학회논문지A
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• 제32A권12호
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• pp.48-54
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• 1995

Dielectrically filled parallel-plate waveguide with finite number of periodic slots in its upper plate as a leaky wave antenna is analysed for E-polarization case. The integro-differential equation whose unknown is the slot equivalent magnetic current over the slot is formulated and solved by use of Galerkin's method. From knowledge of the equivalent magnetic current, the propagation constant and radiation pattern for the finite periodic structure are determined and compared with the results of the infinite case. Good correspondence between them is observed.

• 교육시설
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• 제12권3호
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• pp.5-12
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• 2005

The purpose of this study is to understand and analyze characteristics of using pattern on the physical facilities and fundamental demands about improving factors associated with management of variation type. The teachers of four middle schools are participated through questionnaires with this survey. According to the results, supplemental factors of learning activities, convenient facilities for students, factors with space utilization, moving class and arrangement of similar subject blocks are influential in order on the awareness of teachers for correspondence of variation type. In the analysis of variance based on the sampling factors, significant differences were shown in the factors of attached group, gender, age and managemental experience of variation type. Especially, the factors with moving class and convenient facilities for students are analytically more differential than the other factors, therefore, these factors must be considered in detail.

• The Korean Journal of Ecology
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• 제21권1호
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• pp.105-112
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• 1998

Characteristics of species distribution in the Baekdoo Great Mountain Chain of Kangwon Province were discussed. Resulting from Detrending Correspondence Analysis based on the floristic composition of 48 mountains, the mountains of the Baekdoo chain tended to aggregate on DCA axis. it represented that there was the peculiar floristic composition of the Baekdoo chain separated from the other mountains. High altitude, longitude near the East Sea and large number of vascular species were main factors for the distribution pattern. And exponential relationships between endemic rare species and number of species were clarified. Even though the regions of the Baekdoo Great Mountain Chain had been conserved relatively well, many regions have been faced to be disturbed for tourism, agriculture, forestry, livestock industry and mining since the local autonomy. Thusm, the necessity for the establishment of large area network through the connection of scattered protected areas in the Baekdoo Great Mountain Chain was suggested. it would play a role as a core of nature conservation to sustain species diversity in Korea.

• 환경생물
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• 제27권4호
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• pp.334-340
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• 2009

조류가 식물 열매의 성숙도와 크기에 따라 어떻게 선택하는지를 알아보기 위하여 사육 중인 3종의 새에게 성숙도와 크기가 다른 식물 3종의 열매를 주어 그 먹는 양을 계수하고, 다변량통계로 분석하였다. 실험에 사용한 새는 금계(Chrysolophus pictus, 꿩과), 양비둘기(Columba rupestris, 비둘기과)와 자바공작 (Pavo muticus, 꿩과)이고, 열매는 왕벚나무(Prunus yedoensis, 장미과), 뜰보리수나무 (Elaeagnus multiflora, 보리수나무과)와 아그배나무(Malus sieboldii, 장미과)의 각각 3종류이다. 금계는 3종 열매에 관계없이 열매의 성숙도와 크기에 따른 뚜렷한 섭식 선호도를 보이진 않았다. 양비둘기는 왕벚나무와 뜰보리수나무는 열매의 크기에 관계없이 설익은 열매를 선호하기는 하나 아그배나무 열매는 크기나 성숙도에 따른 차이가 없었다. 공작은 왕벚나무와 뜰보리수나무 열매의 경우 크기에 관계없이 익은 열매를 선호하기는 하지만 아그배나무 열매에 대해서는 크기나 성숙도에 관계없이 거의 섭식하지 않았다. 새들 3종은 초기에 섭식 빈도가 높은 열매를 후기에도 많이 섭식하는 것으로 나타났다. 이상으로 볼 때 조류가 열매를 선택함에 있어서 열매의 종류에 따라 다르다는 것을 알 수 있었다. 그러나 열매의 크기에 따른 선호도는 차이가 없었다. 또한 조류가 먹이를 먹는 양은 초기 선택에 의해 결정된다고 판단된다.

• 대한의용생체공학회:의공학회지
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• 제26권2호
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• pp.95-99
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• 2005

We have performed EEG current source imaging on the cortical surface using visual evoked potentials (VEPs) recorded inside a 3.0 T MRI magnet. In order to remove ballistocardiogram (BCG) artifacts in the VEPs, an improved BCG template subtraction technique is devised. Using the cortically constrained current source imaging technique and pattern-reversal visual stimulations, we have obtained current source maps from 10 subjects. To validate the EEG current source imaging inside the magnet, we have compared the current source maps to the ones obtained outside the magnet. The experimental results demonstrate that there is a strong correspondence between the current source maps, proving that current source imaging is feasible with the evoked potentials recorded inside a 3.0 T MRI magnet.

• The Journal of the Acoustical Society of Korea
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• 제17권4E호
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• pp.3-10
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• 1998

This paper concerns the dynamical behavior, in probabilistic sense, of a feedforward neural network performing auto association for novelty. Networks of retinotopic topology having a one-to-one correspondence between and output units can be readily trained using back-propagation algorithm, to perform autoassociative mappings. A novelty filter is obtained by subtracting the network output from the input vector. Then the presentation of a "familiar" pattern tends to evoke a null response ; but any anomalous component is enhanced. Such a behavior exhibits a promising feature for enhancement of weak signals in additive noise. As an analysis of the novelty filtering, this paper shows that the probability density function of the weigh converges to Gaussian when the input time series is statistically characterized by nonsymmetrical probability density functions. After output units are locally linearized, the recursive relation for updating the weight of the neural network is converted into a first-order random differential equation. Based on this equation it is shown that the probability density function of the weight satisfies the Fokker-Planck equation. By solving the Fokker-Planck equation, it is found that the weight is Gaussian distributed with time dependent mean and variance.

• 한국지진공학회:학술대회논문집
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• 한국지진공학회 2000년도 춘계 학술발표회 논문집 Proceedings of EESK Conference-Spring
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• pp.81-88
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• 2000

This paper based on a survey of the 1995 Hyogo-Ken Nanbu Earthquake analyzes human behavior by the house pattern through the correspondence analysis in an area of Shindo 7: earthquake with an intensity of 7 on the Japanese scale. According to the analysis the following proposals are shown as a space safety planning: First : To establish the space allotment based on which the role behavior among family members are smoothly executed, . Second In the apartment house it is important to install a common space or a "Helping Neighbot" -route to the adjoining dwelling unit which is safe for residents' activities and effective for the improvement of the earthquake-resistant structure of the building. building.

• 대한기계학회논문집B
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• 제27권6호
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• pp.714-725
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• 2003

The theory of the current-type electromagnetic flowmeter for a high temporal resolution was developed for two-phase flow measurements. To predict the output of the current-type flowmeter, the three-dimensional virtual potential distribution C and the newly introduced flow pattern coefficient f were derived and computed. The output of flowmeter depends on the liquid conductivity (sensitive to temperature) and flow configurations of the two-phase flow with the sinusoidal excitation over 100 Hz. The flow pattern coefficient was specially devised to separate the dependency on the flow configuration of the two-phase flow from that on the liquid conductivity which can be expressed with the calibration of single-phase flow. Using the finite difference method, the three-dimensional virtual potential distributions were computed for the electrode of finite size. By taking derivative of the virtual potential, the weight functions were evaluated and compared with existing analytic series solution for the point-electrode. There was a reasonable correspondence between the present and existing results. In addition, the flow pattern coefficients were evaluated for annular flows with various film thicknesses, and compared with the experimental results by the impedance spectroscopy. The numerical results agreed well with the experimental data.

• 한국초등수학교육학회지
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• 제20권2호
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• pp.215-238
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• 2016

교육과정 개정 주기의 단축으로 인해 새로이 고시된 2015 개정 수학과 교육과정에서는 개정의 취지와 방향에 따라 내용상의 적잖은 변화가 야기되었다. 초등학교의 경우, 학습자의 학습 부담 경감 및 교과 역량 강화를 위한 시간 확보의 차원에서 많은 내용이 삭제 또는 상향 이동된 것으로 나타난다. 본 연구는 2009 개정 교육과정과의 비교를 통해 2015 개정시 큰 변화가 야기된 주제에 대해 역대 교육과정에서의 관련 내용의 지도 시기와 내용 범위를 조사하여 변화의 적절성 및 방향성을 검토하는 것을 목적으로 한다. 구체적으로, 수와 연산 영역에서 자연수의 혼합 계산과 분수와 소수의 혼합 계산, 도형 영역에서 물체의 위치와 방향, 측정 영역에서 아르(a)와 헥타르(ha), 톤(t), 수의 범위와 어림하기, 원기둥의 겉넓이와 부피, 규칙성 영역에서 규칙과 대응, 정비례와 반비례이다. 분석 결과는 향후 초등 수학과 교육과정의 방향성을 설정하는 데 시사점을 제공할 것으로 기대된다.