• Journal of the Korea institute for structural maintenance and inspection
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• v.14 no.2
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• pp.137-144
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• 2010

Up to now, common studies of top base have concentrated upon bearing capacity and settlement by in-situ loading test in Japan and Korea. But most of all preceding study for top base must analyze how to deliver overburden loading on bottom of foundation. Therefore, in this study, the stress delivery mechanism of Top-Base Foundation developed in Japan and Floating Top Base developed in Korea is investigated through numerical analysis and laboratory model test. Analyzing the load delivery mechanism of top base, it was found that the division rate of load reduction of top base for overburden load was largest in peripheral skin friction between the top base and the crushed stone. Further, total stress dispersion angle of Top-Base Foundation including internal stress dispersion effect of top base was $41.8^{\circ}$ and total stress dispersion angle of Floating Top Base was $44.5^{\circ}$.

• The Journal of the Acoustical Society of Korea
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• v.37 no.1
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• pp.1-11
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• 2018

Sound propagation in shallow water changes from spherical spreading to cylindrical spreading, depending on boundary conditions, and this point is defined as a transition point of the sound propagation condition. Theoretically, the transition point can be estimated using the transmission loss as a function of source-receiver range. In this paper, the transmission loss curve in a Pekeris waveguide is predicted using a parabolic-equation based acoustic propagation model and using this transmission loss curve, the range from the source of the transition point is estimated, which is compared to the critical distance calculated using the sound speed ratio of water to sediment. In addition, the effects of the sound speed profile and source depth change on the transition point are investigated. Finally, the transition point is estimated using the transmission loss data measured during the period of the SAVEX15 (Shallow Water Acoustic Variability EXperiment 2015) conducted 65 km southwest of Jeju Island in May 2015, and it is compared to the ocean environmental parameters to understand the properties of sound propagation in the experimental area.

• The Korea Swine Journal
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• v.28 no.12 s.328
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• pp.163-163
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• 2006

• 한국지구과학회:학술대회논문집
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• 2006.02a
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• pp.133-133
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• 2006

• The Science & Technology
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• v.6 no.5 s.48
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• pp.33-33
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• 1973

금번 과학주간을 맞아 각학회는 정기총회및 학술강연회를 가졌다. 주로 결산보고와 예산심의, 연구논문발표회등인데 자세한 내용은 다음과 같다. 회의자료와 안내서가 미처 전달되지 못해 게재하지 못한 학회가 있음을 지면을 통해 사과드리며 각학회내의 동정과 소식을 알리기 위한 학회소식란을 많이 이용해주기 바란다.

• Journal of Distribution Research
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• v.4 no.3
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• pp.33-46
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• 2000

본 연구는, 그 동안 간과되어 왔던 의류 상품의 판촉에 초점을 맞추어, 판촉의 여러 방법 별 소비자들의 반응 정도를 알아보고, 그 반응 경향이 소비자의 인구통계적 특성, 판촉에 대한 태도, 의복 쇼핑 성향, 기타 의복 구매 행동과 연관성을 가지는지를 규명함을 목적으로 한다. 수도권 거주 여성 444명을 대상으로 수집한 자료를 이용해 분석이 이루어졌다. 실증적 연구를 통해 다음과 같은 결과를 얻었다. 첫째, 판촉의 각 방법에 대한 소비자들의 반응 정도는 가격 할인이 가장 높았고 그 다음은 디스플레이, 쿠폰, 사은품, 백화점 패션쇼, 경품의 순서로 나타났다. 가격 할인, 디스플레이, 사은품, 쿠폰, 백화점 패션쇼 등 5가지 판촉 방법에 대한 소비자 반응 정도를 기준으로 군집분석한 결과 판촉에 대한 반응 유형에 있어 차이를 보이는 5개 집단을 규명할 수 있었다. 각 집단의 인구통계적 특성들 중에서는 소비자 자신의 학력과 자녀의 연령만이 집단간에 유의한 차이를 보였으며, 각 집단의 판촉 태도는 집단 간에 유의한 차이를 보였다. 둘째, 각 집단은 의복 쇼핑 성향 및 의복 구매 관련 정보원 이용에서 차이를 보였다. 결론에서는, 실증적 연구의 결과 판촉에 대한 소비자 반응 유형별로 인구통계적 특성, 판촉 태도, 의복 쇼핑 성향, 기타 의복 구매 행동에 차이가 있음을 알 수 있었으므로 의류 상품의 판촉 전략 수립시 표적 집단의 특성에 따라 판촉 방법 선택이나 판촉 정보 전달 경로 등을 조절하는 것이 필요함을 제언하였다. 예를 들어, 신중/경제적 쇼핑 성향을 가지며 판촉에 대한 태도가 호의적인 소비자들에 대해서는 다양한 정보 전달 경로를 통해 가격 할인이나 쿠폰을 제공하는 것이 좋은 판촉 방법이 될 것이며, 쾌락/유행 지향적이고 상표/품질을 중시하는 소비자들에 대해서는 잡지, 인적 정보, 카탈로그 등을 정보 전달 경로로 하여 디스플레이나 패션쇼를 통해 판매 촉진을 할 수 있을 것이다.0.10 $h^{-1}$과 0.09$h^{-1}$h-1이었고, 반감기는 각각 6.93 및 7.70시간으로 측정되었다. 각각의 농도에서 12시간 및 8시간 이후에는 g당 0.19$\mu\textrm{g}$ 및 0.18$\mu\textrm{g}$이하로 떨어짐을 알 수 있었다. Phosphamidon과 profenofos의 급성어독성은 profenofos가 높았고, BCF profenofos가 phosphamidon보다 약 100배 정도 높게 나타났으며, 배설속도는 phosphamidon이 profenofos보다 약 2배 정도 빨랐다.

• Cartoon and Animation Studies
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• s.13
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• pp.29-44
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• 2008

This treatise is to study what kind of information marketing efforts each local autonomous entity makes to satisfy the inhabitants' right to know, followed by the abolition of Government Information Agency. Therefore I collected the efficient policy information methods and the data informing publicly policies by utilizing cartoons in each local autonomous entity. I intend to do the research focused on the information activity of local autonomous entities to secure the favor and trust by persuading the Information object of the policies based upon these data.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.24 no.6B
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• pp.1165-1173
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• 1999

In order to support various multimedia communication services, a well balanced backbone network should be designed using recently advanced optical communication technologies. In this paper an optimal backbone network configuration design is presented fur Korean traffic environment. A new traffic model, Population-Distance-Gross Group Products(PDG) traffic model, is devised. In Korean network traffic environment, six regional centers are selected, link capacities between the regional centers are estimated from the PDG traffic model, and the overall network configuration is designed for the all-optical backbone network in Korea. A simulation study is carried out to verify the desired performance of the designed backbone network. Simulation results show that performance of the backbone network is well balanced to support various communication services in Korea in the 2000s.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.27 no.2
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• pp.188-197
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• 2016

In this paper, we propose a method that represents a mathematical form of wave propagation by using the fact the refractive index determining wave propagation characteristic is a function of altitude. Proposed method uses Snell's law that expresses relationship between incident angle and refraction angle when incident wave passes medium having a different refractive index. We present the simulation results about wave propagation by setting the square of refractive index in the form of the polynomial for altitude and show that it is possible to estimate the coefficients of the polynomial through the angle information from vertical axis of multiple radar systems.

• Journal of the Korean Institute of Intelligent Systems
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• v.18 no.3
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• pp.381-386
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• 2008

Virtual 3D audio methods that create 3D sound effects are researched highly for multimedia devices using 2 speakers or headphone. The most typical method to create 3D effects is a technology through use of head related transfer function (HRTF) which contains the information that sound arrives from a sound source to the ears of the listener. But it can decline some 3D effects by cone of confusion between front and back directions due to the non-individual HRTF depending on each listener. In this paper, we propose a new method to use psychoacoustic theory that creates realistic 3D audio. In order to improve 3D sound, we calculate the excitation energy of each symmetric HRTF and extract the ratio of energy of each bark range. Informal listening tests show that the proposed method improves the front-bach sound localization characteristics much better than the conventional methods.