• 대한음성학회지:말소리
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• 제61호
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• pp.63-74
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• 2007

Discrimination of music and speech from the multimedia signal is an important task in audio coding and broadcast monitoring systems. This paper deals with the problem of feature parameter extraction for discrimination of music and speech. The wavelet transform is a multi-resolution analysis method that is useful for analysis of temporal and spectral properties of non-stationary signals such as speech and audio signals. We propose new feature parameters extracted from the wavelet transformed signal for discrimination of music and speech. First, wavelet coefficients are obtained on the frame-by-frame basis. The analysis frame size is set to 20 ms. A parameter $E_{sum}$ is then defined by adding the difference of magnitude between adjacent wavelet coefficients in each scale. The maximum and minimum values of $E_{sum}$ for period of 2 seconds, which corresponds to the discrimination duration, are used as feature parameters for discrimination of music and speech. To evaluate the performance of the proposed feature parameters for music and speech discrimination, the accuracy of music and speech discrimination is measured for various types of music and speech signals. In the experiment every 2-second data is discriminated as music or speech, and about 93% of music and speech segments have been successfully detected.

• Communications for Statistical Applications and Methods
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• 제13권3호
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• pp.567-576
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• 2006

In this paper, we applied the multiblock dimension reduction methods to the classification of tumor based on microarray gene expressions data. This procedure involves clustering selected genes, multiblock dimension reduction and classification using linear discrimination analysis and quadratic discrimination analysis.

• 지역사회간호학회지
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• 제28권4호
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• pp.375-385
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• 2017

Purpose: This study aims to examine the relationships among social discrimination, subjective health, and personal satisfaction based on the country of origin. Methods: The analysis was based on 16,958 immigrants who participated in the National Survey of Multicultural Family 2015 in Korea. This study conducted stratified cross-analysis of social discrimination for the differences in subjective health and personal satisfaction. Multivariate-adjusted odds ratios and 95% confidence intervals for the relationships among social discrimination, subjective health, and personal satisfaction were examined with multivariable logistic regression. Results: There were differences in experience of social discrimination, subjective health status, and personal satisfaction according to the country of origin. Groups without the experience of social discrimination had better subjective health and personal satisfaction than the other groups. Conclusion: This study demonstrates that a discrimination prevention program needs to be developed based on a cultural approach.

• 한국가정과학회지
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• 제6권2호
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• pp.41-48
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• 2003

The purpose of this research was to analyze the sexual discrimination level of woman employee in hotel industry. This research was based on a survey. The survey was conducted on 130 individuals who were working in hotels in Seoul. With collected data, regression analysts, T-Test and analysis of variances were utilized using SAS program. The results showed that there were no evidences of sexual discrimination among tile individuals' educational levels and the departments. Whereas, there were evidences of sexual discrimination, sexual harassment. discrimination against employment, and workload among the position levels within a corporation. Finally. the analysis showed that there were sexual discrimination in a promotion policy. retirement policy. workload. and employment during employment period. However, there were no evidences of sexual discrimination in ether areas.

• 재활간호학회지
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• 제19권2호
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• pp.100-107
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• 2016

Purpose: The goal of this study was to examine the association between perceived racial discrimination and substance use and the potential moderating effect of perceived parental affection between the two variables. Methods: A total of 101 Korean American adolescents participated in this cross-sectional study utilized an online survey. Descriptive statistics were used to describe for means and frequencies and the patterns of substance use. Logistic regression analysis was also used to examine the association between perceived discrimination and substance use. Results: Ninety percent of the participants reported perceiving racial discrimination, and 21% had used at least one kind of substance in the month prior to taking the survey. The most frequently used substance was alcohol, followed by marijuana and tobacco products. Logistic regression analysis revealed a link between perceived racial discrimination and substance use (OR = 1.74, 95% CI = 1.01, 3.00). However, parental affection did not moderate between racial discrimination and substance use. Conclusion: These findings suggest that perceived racial discrimination is positively associated with substance use among Korean American adolescents, and health care providers, counselors, and school nurses should screen for discrimination-related stress and substance use in this population.

• 한국콘텐츠학회논문지
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• 제17권1호
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• pp.201-212
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• 2017

본 연구에서는 변동계수를 이용하여 DEA 모형의 변별력 평가에 적용할 수 있는 새로운 평가기준을 제시하였다. 변별력 평가를 위해 기존 연구에서 제시한 중요도와 본 연구에서 제안한 변동계수를 이용하여 변별력을 분석하였다. 다양한 DEA 모형들 중 변별력 평가를 위해 CCR-DEA, BCC-DEA, entropy, bootstrap, super efficiency, cross efficiency DEA 모형을 선정하고 실증분석을 실시하였다. 모형들의 순위상관관계를 파악하기 위해서 CCR 모형과 BCC 모형의 효율성 값과 entropy, bootstrap, super efficiency, cross efficiency 모형의 효율성 값들 간에 순위상관분석을 실시하였다. 본 연구를 통해 도출된 연구결과를 요약하면 다음과 같다. 첫째, 중요도와 변동계수를 이용한 모형들의 변별력 순위가 동일한 것으로 분석되어 변동계수를 DEA 모형의 변별력 평가기준으로 이용할 수 있다는 것이다. 둘째, 본 연구의 실증분석 결과에 따르면 4개 모형 중 super efficiency 모형이 변별력이 가장 높은 것으로 분석되었다. 셋째, CCR 모형과 순위상관관계가 가장 높은 모형은 super efficiency 모형으로 나타났고, BCC 모형과 순위상관관계가 가장 높은 모형도 super efficiency 모형으로 분석되었다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.243-244
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• 2006

In this study, we propose a speech/music discrimination method using spectral peak track analysis. The proposed method uses the spectral peak track's duration at the same frequency channel for feature parameter. And use the duration threshold to discriminate the speech/music. Experiment result, correct discrimination ratio varies according to threshold, but achieved a performance comparable to another method and has a computational efficient for discrimination.

• Journal of Electrical Engineering and information Science
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• 제1권2호
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• pp.52-57
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• 1996

Detection of arcing high impedance faults has been a perplexing in the power distribution protection. Transient analysis of distribution disturbances for fault discrimination from other normal events is important for a secure protection of the power system. A simple parameter of wave form distortion quantification is used to analyze the behaviors of arcing faults and normal distribution disturbances. Theoretical perspectives of the transients were studied and actual disturbances were examined. From this investigation, a discrimination guideline based on the revised crest factor is developed. The discrimination method has a high potential to enhance the reliability and security for the distribution system protection.

• Nuclear Engineering and Technology
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• 제50권8호
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• pp.1426-1432
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• 2018

This paper presents a neutron detector configuration using EJ-301 scintillation liquid, a R9420 photo-multiplier and a homemade preamplifier. The detector qualities which include the energy linearity, efficiency response and neutron/gamma discrimination are guaranteed for neutron detection in the energy range from 0 to 3000 keVee. Regarding the neutron/gamma discrimination capability, four pulse shape discrimination (PSD) methods which are the threshold crossing time (TCT), pulse gradient analysis (PGA), charge comparison (CC) and correlation pattern recognition (CPR), were evaluated and discussed; among of these, the CPR method provides the best neutron/gamma discrimination.

• 한국심리학회지 : 문화 및 사회문제
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• 제26권4호
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• pp.351-378
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• 2020

본 연구는 성별 간 갈등이 가장 극심하게 나타나는 성인초기 남녀의 성차별 메타-인식 양상을 탐색하기 위해 '여성의 남성을 향한 양가성에 대한 인식'과 '남성의 양가적 성차별에 대한 인식', '한국 사회의 성차별 실태'에 대한 지각을 측정하여 잠재프로파일 분석을 실시하고, 각 유형에 따른 성역할갈등, 이성과의 거리감, 성차별 논쟁에 대한 지지도의 차이를 살펴보았다. 이를 위하여 만 18세 이상 39세 이하 남녀 330명을 대상으로 자료를 수집하였고, SPSS 20.0과 Mplus 7.4 프로그램을 사용하여 자료를 분석하였다. 그 결과, 여성은 '성차별 둔감형 여성', '성차별 민감형 여성', '성차별 저항형 여성' 총 3가지 유형, 남성은 '성평등 인식형 남성', '역차별 인식형 남성' 총 2가지 유형이 도출되었다. 여성들은 성차별 메타-인식이 높은 유형일수록 성차별에 대한 지각과 성차별 논쟁에 대한 지지도가 높아진 반면, 남성들은 성차별 메타-인식이 높은 유형일수록 역차별에 대한 지각이 높아졌다. 남녀 모두 성차별 메타-인식 수준이 높은 유형일수록 더 높은 성역할갈등과 이성과의 거리감을 나타내었다. 이러한 결과를 토대로 현 한국 사회의 성별 갈등 현상에 대한 시사점과 본 연구의 제한점, 후속 연구를 위한 제언을 논의하였다.