• Annual Conference of KIPS
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• 2024.05a
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• pp.723-726
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• 2024

단일 dataflow 를 지원하는 DNN 가속기는 자원 효율적인 성능을 보이지만, 여러 DNN 모델에 대해서 가속 효과가 제한적입니다. 반면에 모든 dataflow 를 지원하여 매 레이어마다 최적의 dataflow를 사용하여 가속하는 reconfigurable dataflow accelerator (RDA)는 굉장한 가속 효과를 보이지만 여러 dataflow 를 지원하는 과정에서 필요한 추가 하드웨어로 인하여 효율적이지 못합니다. 따라서 본 연구는 제한된 dataflow 만을 지원하여 추가 하드웨어 요구사항을 감소시키고, 중복되는 하드웨어의 재사용을 통해 최적화하는 새로운 가속기 설계를 제안합니다. 이 방식은 자원적 한계가 뚜렷한 엣지 디바이스에 RDA 방식을 적용하는데 필수적이며, 기존 RDA 의 단점을 최소화하여 성능과 자원 효율성의 최적점을 달성합니다. 실험 결과, 제안된 가속기는 기존 RDA 대비 32% 더 높은 에너지 효율을 보이며, latency 는 불과 1%의 차이를 보였습니다.

• Journal of Digital Convergence
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• v.15 no.11
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• pp.133-146
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• 2017

In recent years, the development and market participation of major makers of next-generation eco-green vehicles has been accelerating. Consumer interest has also increased. Consumer characteristics, consumption type, characteristics of next-generation eco-friendly vehicles, and government policies on next eco-green vehicles. The results of this study are as follows. In Korea, there was no significant difference by gender, age, monthly average income, and consumer type. However, there was no significant difference in purchase intention by gender, age, and monthly income, Respectively. In the case of Japan, there was no significant difference by gender, age, monthly income, and consumer type. In Korea, on the other hand, images such as brand, color, and design have positive effects on eco-friendly vehicles. In the case of Japan, image and stability have a positive effect on consumers' purchasing behavior. Therefore, it is important for Japanese consumers to consider not only the image of purchasing an eco-friendly vehicles, but also the safety of the vehicles body, appear. In the case of Korea, the socio-environmental value-seeking type has a significant relationship with the purchasing intention. In the case of socio-environmental value-seeking type, the government's support policy such as carbon dioxide tax, direct support from the national or local governments, gasoline tax, Carbon tax and fuel related tax relief showed positive effects. In the case of Japan, the price-seeking type and the socio-environmental value-seeking type were found to have a significant relationship with the purchasing intention. Both the price-seeking type and the socio-environmental value-seeking type showed that the carbon dioxide tax, Direct support, gasoline tax, gasoline tax, and carbon tax, etc. have positive effects.

• Journal of The Institute of Information and Telecommunication Facilities Engineering
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• v.2 no.4
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• pp.64-70
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• 2003

Hardware, software, networking to Digital Contents. Most of the Small and medium IT Enterprise strategy shift of R & D system. In 2001, IT Small and medium size manufacture occupied 3.8% of Gross Domestic Product. IT industry R&D Program and Excellent Information Technology R&D Program support rate $54{\sim}60%$ of computer, software and contents for Information Technology R&D, when the Technology of R&D input to market need to development for about 3 years. Most of the Small and medium IT Enterprise strategy priority find out from computer, software and contents.

• Journal of the Korean Society of Costume
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• v.56 no.1 s.100
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• pp.106-120
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• 2006

Using aesthetics of Rosencranz as the basis, this study contains the peculiarities of 'ugliness' and the obscured conceptual meaning of 'avant-garde', 'grotesque', and 'decadence' that are being utilized under ambiguous significance are defined through modern fashion and fashion of online game characters. Forms of 'ugliness' expressed in modern fashion and in games characters display distortion of form through incongruity, unbalance, disproportion and disharmony, and with this lack of form and expressional imprecision, both contain the elements of comical characteristics of vulgarity and repugnance. The difference in 'ugliness' between modern fashion and game character fashion is, the significance of 'ugliness' being expressed in modern fashion challenges new concepts by refusing tradition and recovering the human nature that has become turbid. On the other hand, 'ugliness' in game character fashion complements the story of the game that uses legends, fantasies or novels as its basis. Opposed to the significance of recovering human nature that is displayed in modern fashion, in order to terminate the opposing game character, the fashion of game characters exaggerates the form of modern fashion with added brutality. In addition, with the advantage of virtual reality that allows a more flexible expression than in the real word, images created are more sensational and excessive use of grotesque images are being expressed.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.14 no.3
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• pp.97-106
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• 2000

This paper proposes on-line based a deterioration diagnosis device for diagnosis pole transformers using tan$\delta$ and FFT(fast Fourier transform). We measured tan$\delta$ and temperature to diagnose pole transformer insulating oil, diagnostic results are processed by FFT. For measuring convenience, we use R/F(radio frequency) wireless data communication module operating by secondary voltage of pole transformer. We have voltage variation test and oil temperature variation test to prove usability of proposed diagnosis device. The result of this paper shows that the proposed device can be used as deterioration diagnosis device of pole transformers.

• The Korean Journal of Applied Statistics
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• v.13 no.2
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• pp.353-369
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• 2000

We systematized an stratified spatial sample design(SSSD) that uses the adequate stratification criteria such as the shapeness or the dispersion of an interesting region in a spatial population. And we proposed an adaptive searching estimation method in the SSSD to estimate the area of region of interest in two-dimensional surfaces. When wc adopt the proposed adaptive searching estimation method in SSSD, the observing sample size is more decreased than a classical sample design that all the designed sample size is observed. Nevertheless it has been shown that we can produce the moderate result but the efficiency is a slight reduced.

• The Bulletin of The Korean Astronomical Society
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• v.39 no.2
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• pp.109.2-109.2
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• 2014

세계전파통신회의 (WRC; World Radiocommunication Conference)회의는 국제전기통신연합 (ITU)에서 규정하는 국제 전파법 제개정을 위해, 3-4년 간격으로 개최되는 전파통신 관련 최고회의이다. WRC-15회의는 2015년 11월 2일 - 11월 27일에 걸쳐 스위스 제네바에서 개최될 예정이며, 과학업무 관련 의제들은 다음과 같다. 즉, 7145-7250MHz 대역의 지구탐사위성(지구대우주)업무의 1순위 분배연구, 8,700~10,500MHz 대역의 지구탐사위성업무의 신규 SAR용 대역(연속 1.2GHz) 분배방안 연구, 우주선 근거리통신용 410-420MHz 대역 규제 철폐 관련 검토, 윤초삭제와 관련된 세계협정시(UTC) 개정 또는 대처방안 연구가 있다. 그리고 모바일 광대역 응용 실현을 위한 이동통신업무 추가 분배 및 IMT 추가 지정 연구, 나노 위성 및 피코 위성 규제 관련 연구들이 있다. 따라서 본 발표에서는 WRC-15회의의 과학업무 의제에 관한 사전 연구결과를 소개하고, 국내전파망원경 운용에 영향을 미칠 수 있는 주파수 대역 및 윤초 삭제 등과 관련된 주요 이슈에 대한 향후 대응책 검토를 하고자 한다.

• KSBB Journal
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• v.16 no.6
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• pp.614-619
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• 2001

Inhibitory effects of Eucommia ulmoides Oliver against osteoporosis were studied with ovaryectomized rats. The diet mixture A of calcium, vitamin D$_3$, and vitamin K$_1$and the additional mixture B with extract of Eucommia ulmoides Oliver were fed for 7 months to ovaryectomized rats. The urine content of pyridinoline and deoxypyridinoline was used as bone biochemical markers. Concentrations of deoxypyridinoline of ovaryectomized rats fed with the mixture A and B decreased 9.0% and 26.9%, respectively, when they were compared to the ovaryectomized control. The trabecular bone areas of proximal tibias of ovaryectomized rats were measured and compared to the ovaryectomized control. The areas fed with the mixture A and B increased 9.9% and 42.0%, respectively, that proved the inhibitory effect of Eucommia ulmoides Oliver against osteoporosis.

• Journal of the Korean Data and Information Science Society
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• v.26 no.3
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• pp.549-559
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• 2015

The MDPDE is an attractive alternative to maximum likelihood estimator because of the strong robustness properties that it inherently possess. The characteristics of MDPDE can be varied with the tuning parameter, in general, there is a trade-off between robustness and asymptotic efficiency. Hence, selection of optimal tuning parameter is important but complicated task. In this study, we introduce two optimal tuning parameter selection methods proposed by Fujisawa and Eguchi (2005) and Warwick (2006). Through simulation study, we found out that Warwick's method yields excessively small optimal tuning parameter in certain cases while Fujisawa and Eguchi's method performs well. Therefore, we think Fujisawa and Eguchi's method can be used commonly for finding optimal tuning parameter of MDPDE.

• Aerospace Engineering and Technology
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• v.2 no.1
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• pp.22-28
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• 2003

This paper presents a method for estimating static aerodynamic derivatives by analyzing data obtained from the flying quality evaluation test of a small canard aircraft. The aerodynamic derivatives extracted from maximum likelihood estimation method and from the proposed method in this paper are compared in the same polt. Reliable static aerodynamic derivatives were extracted from a limited number of the flight tests by the proposed method. The parameter data obtained from this method can be used as reference for the conventional parameter identification methods such as maximum likelihood estimation method.