• 전기학회논문지
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• 제56권9호
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• pp.1638-1642
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• 2007

This paper investigated the destruction effect of the semiconductors by impact of high power electromagnetic wave. The experiments is employed as an open-ended waveguide to study the destruction effects on semiconductor using a 2.45 GHz 600 W Magnetron as a high power electromagnetic wave. The semiconductors are located at a distance of $31cm\sim40cm$ from the open-ended waveguide and are composed of a LED drive circuit for visual discernment. Also the chip condition of semiconductor is observed by SEM(Scanning Electron Microscope) analysis. The semiconductor are damaged by high power electromagnetic wave at about 860 V/m. The SEM analysis of the destructed devices showed onchipwire and bondwire destructions. Based on the result, semiconductor devices should have plan to protect the semiconductor devices form high power electromagnetic wave. And the database from this experiment provides the basis for future investigation.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2006년도 춘계 종합학술대회 논문집
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• pp.381-384
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• 2006

본 논문에서는 독립성분분석(Independent Component Analysis, 이하 ICA)기법과 median에서의 GBD 알고리즘을 이용한 영상 분류 방법을 제안한다. 이 제시된 방법은 영상이 급격히 변화하는 부분의 정보를 잃지 않게 하면서 영상간의 거리를 측정할 수 있었다. 모의 실험 결과로부터 ICA는 K가 7에서 영상간의 상대적 식별이 불가능 하였지만, median에서는 K에 관계없이 영상간의 상대적 식별이 가능함을 모의 실험을 통하여 확인하였다.

• 대한의용생체공학회:의공학회지
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• 제27권6호
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• pp.357-364
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• 2006

Microwave Radiometry is the spectral measurement of eleclromagnetic radiation at frequency bands in the microwave region. One particular application of Microwave Radiometry is for analyzing temperature difffrentials of inside of human body to detect and diagnose pathologic conditions in which the temperature differentials are related with the symptoms of certain diseases. To accomplish this aim, we propose a new calibration method for estimating subcutaneous temperature by Microwave Radiometer and we also suggest a tumor-imitator phantom structure for simulating heat diffusion propagated by tissues around tumors to evaluate the discernment of brighuless temperature difffrentials.

• 정보처리학회논문지B
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• 제9B권1호
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• pp.17-22
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• 2002

Dempster-Shafer 증거병합 방법의 가장 큰 문제는 계산 복잡도가 지수적인 증가를 갖는다는 점이다. 이는 가설 집단을 이루는 원소의 개수가 각 가설을 이루는 속성 값들의 모든 부분 집합으로 focal 요소로 구성되기 때문이다. 이 문제를 피하기 위해 본 논문에서는 근사적 증거 병합 방법을 제안한다. 이 방법은 간단한 응용에 적용하여 그 성능을 조사하고 다른 증거 병합 방법의 하나인 VBS의 결과와 비교해 본다. 근사적 증거 병합방법은 계산 속도를 크게 개선하였고 전문가가 허용하는 편차 수준에서 신뢰 값을 갖는 것으로 평가되었다.

• Journal of the Korean Data and Information Science Society
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• 제21권3호
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• pp.471-480
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• 2010

군집방법은 탐색적 통계기법에서 매우 유용한 방법이나 최종 의사결정을 지지할 검정 통계량이 없는 것이 단점이다. 자료구조에서 살펴보면 군의 성격을 파악하는 변수가 있느냐 없느냐가 군집분석과 판별분석의 차이이다. 군집분석이 가장 이상적으로 이루어졌다면 그 프로파일의 분석결과가 판별분석과 같을 것이다. 이 점에 근거하여 비계층 분석의 대표적인 K-평균법 방법과 자기 조직화지도 군집분석의 유효성을 2009년 여자프로골프 선수들의 프로파일 분석을 통하여 비교 연구하였다.

• Asian Journal for Public Opinion Research
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• 제8권2호
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• pp.67-104
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• 2020

Fake news and disinformation provoked heated arguments during Taiwan's 2018 local election. Most significantly, concerns grew that Beijing was attempting to sway the island's politics armed with a new "Russian-style influence campaign" weapon (Horton, 2018). To investigate the speculated effects of the "onslaught of misinformation," an online survey with 1068 randomly selected voters was conducted immediately after the election. Findings confirmed that false news affected Taiwanese voters' judgment of the news and their voting decisions. More than 50% of the voters cast their votes without knowing the correct campaign news. In particular, politically neutral voters, who were the least able to discern fake news, tended to vote for the China-friendly Kuomintang (KMT) candidates. Demographic analysis further revealed that female voters tended to be more likely to believe fake news during the election period compared to male voters. Younger or lower-income voters had the lowest levels of discernment of fake news. Further analyses and the implications of these findings for international societies are deliberated in the conclusion.

• 영어어문교육
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• 제15권2호
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• pp.93-119
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• 2009

Internalized Confucian cultural scripts trigger meta-pragmatic thinking in Korean communication. Commonly shared cultural knowledge acts as a powerful constraint upon the behavioral patterns of each participant and this knowledge can be strategically manipulated to avoid confrontations. The strategic use of address reference terms utilizes cultural values as a face-redress mechanism to achieve situation-specific goals. This paper offers a view of Korean address reference terms that rests on four revisions of politeness theory (Brown & Levinson, 1978, 1987). First, the notion of discernment - or 'wakimae' - as a culture-specific mechanism is reanalyzed. Secondly, culture-specific values as another R (ranking of imposition) variable are introduced. Thirdly, a reevaluation of the notion of positive face (respect) is discussed. Finally, the address reference terms in combination with other honorifics by the speaker that can be strategically applied either to threaten or to enhance the face of the hearer is observed. Because Confucianism is embedded in Korean cultural identity, teaching cultural values integrated and their roles in situation-dependent politeness is required in order to understand interactional nature of politeness occurring from particular discourse contexts.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.1516-1517
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• 2007

This paper investigated the breakdown effect of the CMOS device by impact of high power electromagnetic wave. The experiments employed a waveguide to study the current characteristics of CMOS device broken by high power electromagnetic wave. The CMOS device were composed of a LED drive circuit for visual discernment. Also CMOS device broken by high power electromagnetic wave was observed by power current. The CMOS device were broke by high power electromagnetic wave at about 10 kV/m and when power current is 75 mA. Based on the result, CMOS devices should show plan to protect the CMOS devices by high power electromagnetic wave. And the database from this experiment should provide the basis for future investigation.

• International Journal of Internet, Broadcasting and Communication
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• 제14권3호
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• pp.143-148
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• 2022

In this paper, we employ deep neural network (DNN) to discern Android user interaction data distribution from artificial data distribution. We utilize real Android user interaction trace dataset collected from [1] to evaluate our DNN design. In particular, we use sequential model with 4 dense hidden layers and 1 dense output layer in TensorFlow and Keras. We also deploy sigmoid activation function for a dense output layer with 1 neuron and ReLU activation function for each dense hidden layer with 32 neurons. Our evaluation shows that our DNN design fulfills high test accuracy of at least 0.9955 and low test loss of at most 0.0116 in all cases of artificial data distributions.

• Advances in nano research
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• 제15권6호
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• pp.513-520
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• 2023

The exponential proliferation of cutting-edge computing technologies has spurred organizations to outsource their data and computational needs. In the realm of cloud-based computing environments, ensuring robust security, encompassing principles such as confidentiality, availability, and integrity, stands as an overarching imperative. Elevating security measures beyond conventional strategies hinges on a profound comprehension of malware's multifaceted behavioral landscape. This paper presents an innovative paradigm aimed at empowering cloud service providers to adeptly model user behaviors. Our approach harnesses the power of a Particle Swarm Optimization-based Probabilistic Neural Network (PSO-PNN) for detection and recognition processes. Within the initial recognition module, user behaviors are translated into a comprehensible format, and the identification of malicious nano-structures behaviors is orchestrated through a multi-layer neural network. Leveraging the UNSW-NB15 dataset, we meticulously validate our approach, effectively characterizing diverse manifestations of malicious nano-structures behaviors exhibited by users. The experimental results unequivocally underscore the promise of our method in fortifying security monitoring and the discernment of malicious nano-structures behaviors.