• 음성과학
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• 제6권
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• pp.163-179
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• 1999

For the set up, management and repair of a mobile communication system, continuous estimation of speech quality is required. Speech quality measurement can be conducted by listener's judgement in a subjective test such as MOS (Mean Opinion Score) test. However, this method is laborious, expensive and time-consuming, it is advisable to predict subjective speech quality via objective measures. This paper presents a robust objective speech quality measure, PLP-CMS (Perceptual Linear Predictive-Cepstral Mean Subtraction), which can predict subjective speech quality in mobile communication systems. PLP-CMS has a high correlation with subjective quality owing to PLP (Perceptual Linear Predictive) analysis and shows a robust performance not being influenced by PSTN (Public Switched Telephone Network) channel effects due to CMS (Cepstral Mean Subtraction). To prove the performance of our proposed algorithm, we carried out subjective and objective quality estimation on speech samples which are variously distorted in a real mobile communication system. As a result, we demonstrated that PLP-CMS has a higher correlation with subjective quality than PSQM (Perceptual Speech Quality Measure) and PLP-CD (Perceptual Linear Predictive-Cepstral Distance).

• 지역사회간호학회지
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• 제24권4호
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• pp.461-470
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• 2013

Purpose: This study examined factors influencing subjective quality of life in baby boom generation men. Methods: This was a descriptive survey study. Data were collected from 279 baby boom generation men from September to October 2012. The instruments used included a subjective quality of lifescale, a self-esteem scale, a spiritual well-being scale, a communication with spouse scale, a social support scale, and a job satisfaction scale. Data were analyzed using descriptive statistics, t-test, one-way ANOVA and Scheff$\acute{e}$ test, Pearson's correlation coefficients, and Hierarchical multiple regression. Results: All variables were positively correlated with subjective quality of life. As a result, factors influencing subjective life of quality were self-esteem (${\beta}$=.21, p<.000), social support (${\beta}$=.20, p<.002), job satisfaction (${\beta}$=.19, p<.001), communication with spouse (${\beta}$=.15, p<.004), spiritual well-being( ${\beta}$=.16, p<.004), and family income (${\beta}$=.15. p<.023). These factors accounted for 61% of the total variances. Conclusion: The findings indicate a need to develop nursing intervention programs for community health nurses in consideration of these variables to improve the subjective quality of life for baby boom generation men.

• 한국콘텐츠학회논문지
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• 제19권1호
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• pp.329-338
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• 2019

본 연구는 정신질환자의 노화불안과 주관적 안녕감 정도를 확인하고 노화불안이 주관적 안녕감에 미치는 영향을 파악하기 위해 서술적 조사연구 방법으로 수행되었다. D와 C 지역에 거주하는 정신질환자 107명(조현병=48명, 기분장애=59명)이 연구에 참여하였다. 수집된 자료는 SPSS 23.0 program을 이용해 기술 통계, t-test, one-way ANOVA, Pearson correlation, Multiple regression을 이용하여 분석하였다. 연구결과, 대상자의 노화불안은 7점 만점에 $3.95{\pm}0.80$이었고, 주관적 안녕감은 6점 만점에 $3.53{\pm}0.73$이었으며, 노화불안과 주관적 안녕감은 통계적으로 유의한 부적상관관계(r= -.48, p <.001)가 있었다. 회귀분석 결과 노화불안, 주관적 건강상태, 직업상태는 주관적 안녕감에 영향을 미치는 유의한 변수로 확인되었으며, 이들 변수의 총 설명력은 31.1%이었다. 따라서 정신질환자의 주관적 안녕감을 향상시키기 위해 노화불안을 관리할 수 있는 체계적이고 통합적인 중재가 필요하다.

• 한국음향학회지
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• 제28권2호
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• pp.96-106
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• 2009

본 논문에서는 헤드폰의 음향적 특성과 주관적인 선호도간의 상관관계를 분석하고, 이로부터 음향적 특성을 이용한 주관적 선호도의 예측 가능성을 알아보았다. 헤드폰의 음향적 특성으로 좌, 우 채널에 대한 고조파 왜곡, 주파수 특성의 분산, 그리고 충격파 응답의 양이 상관 계수가 사용되었다. 이들 특성은 머리 모형을 이용하여 잡음이 없는 무향 환경에서 측정되었다. 주관적인 선호도는 음량감, 선명감, 공간감, 포만감, 전체적인 느낌의 5개 항목으로 점수화하여 나타내었다. 선호도 평가에는 음악 청취에 경험이 많은 12명의 청취자가 참여하였으며 샘플 음악은 가요, 팝, 경음악, 음성, 클래식의 5 종류의 음악이 사용되었다. 실험에 사용된 헤드폰은 밀폐형 4종, 개방형 2종 귓속 삽입형 2종 등 총 8개가 사용되었다. 주관적인 선호도는 이원 배치 법을 이용하여 주관적 선호도에 영향을 끼치는 요인을 분석하였으며 음향적 특성과 주관적인 선호도 점수 간의 상관 계수를 구하였다. 실험 결과 오른쪽 채널에서 측정된 주파수 크기 응답의 분산이 주관적인 선호도와 가장 높은 상관 계수를 갖는 것으로 나타났으며, 충격파 응답의 양이 상관 계수는 거의 상관 관계가 없는 것으로 나타났다.

• 한국생활과학회지
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• 제8권1호
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• pp.125-134
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• 1999

The purpose of this study was to investigate the effects of heat transfer characteristics of fibers on the Qmax of insulating nonwovens. The effects of fiber type, moisture content, washing cycles on the Qmax were observed. The correlations between Qmax measured by KES-F7 system and subjective warm/cool touch perception test was analyzed. The results obtained were as followed: 1. Heat transfer characteristics of fibers effected on the Qmax of insulating nonwovens. 2. Moisture transport properties of fibers effected considerably on the Qmax of nonwovens and the increasing rate of Qmax by increasing moisture content was much higher at wool than polyester. 3. As a result of subjective perception test, subjective warm/cool touch and wettness of wool nonwoven was increased obviously by increasing moisture content. 4. At the same moisture content, wool nonwoven showed higher subjective cool touch and wetness than polyester. 5. In the physical properties of nonwovens, thickness was the most effective factor on the Qmax of insulating nonwovens.

• 대한정형도수물리치료학회지
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• 제18권1호
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• pp.19-29
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• 2012

Background: This study was conducted to investigate subjective musculoskeletal symptom and the related factor of caregiver. Methods: For 300 caregiver, we used the self-administered questionnaires to examine occupational stress and subjective musculoskeletal symptom designed by KOSHA. The collected data were analyzed chi-square test, independent t-test and multiple logistic regression analysis using SPSS 12.0. Results: The multiple logistic regression analysis showed that the caregiver working in the general hospital significantly increased the subjective musculoskeletal symptom in their neck, shoulder, hand/wrist/finger, back, leg/foot. For the caregiver working in hospital showed significantly increased the subjective musculoskeletal symptom in their hand/wrist/finger and leg/foot. Conclusions: With the above results, continuous and systematic prevention program should be established, which include the ergonomics and psychosocial factor for the caregiver's musculoskeletal symptom.

• 한국산업보건학회지
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• 제26권1호
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• pp.99-108
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• 2016

Objectives: The purpose of this study is to analyze factors associated with depression among wage earners by subjective health and stress perception. Methods: The study subjects include 1,787 wage earners(aged 19 and older) who are currently working, using data from the 2014 National Health and Nutrition Survey. Data were analyzed using frequency test, t-test, ANOVA and multiple regression. Results: Multiple regression analysis showed that perceived stress level, subjective health status, age, monthly household income, sex, marital status, average daily sleeping time, and whether type of employment was regular or non-regular were significantly related to depression. Conclusions: It is necessary to develop an appropriate mental health promotion program and to manage prevention of depression at the national level.

• 한국콘텐츠학회논문지
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• 제17권3호
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• pp.212-221
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• 2017

본 연구는 노인의 주관적 삶의 질에 미치는 영향요인을 파악하여 노인의 삶의 질 향상을 위한 기초자료를 마련하고자 2015년 10월 4일 B광역시 소재 일 병원의 1004day 행사에 참여한 노인 201명을 대상으로 설문지를 배부하여 자료를 수집하였다. 수집된 자료는 SPSS 20.0 프로그램을 이용하여 빈도와 백분율, t-검증, 일원분산분석, 사후검증(Scheffe's-test), Pearson's correlation, 단계적 다중회귀분석을 실시하였다. 본 연구의 결과 대상자의 일반적 특성에 따른 주관적 삶의 질은 학력(F=5.87, p=.001), 동거형태(F=4.39, p=.005), 지각된 경제상태(F=16.25, p<.001)에 따라 유의한 차이를 보였으며, 주관적 건강상태(r=.22), 사회활동(r=.25), 가족지지(r=.20)와 정적 상관관계를 보였다. 대상자의 주관적 삶의 질에 영향을 미치는 요인은 지각된 경제상태, 동거형태, 가족지지, 사회활동으로 확인되었으며, 총 23.6%를 설명하였다(R2= .236, p<.001). 이를 바탕으로 노인의 주관적 삶의 질을 높이기 위하여 가족지지 향상 프로그램 및 다양한 사회활동 프로그램을 개발하여 적용할 것을 제안한다.

• 대한수학교육학회지:수학교육학연구
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• 제8권2호
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• pp.587-603
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• 1998

Being in Learning-accomplishing rate on mutual cooperation studies of small group by different class, we can find that the sujective class of high group is much more efficient than the compared class of high group and that the subjective class of low group is more efficient than the compared class of low group as times goes. Moreover, in analysis of all directions on mathematical attitude, high group appears to be a great efficient in all areas such as confidence, flexibility, reaction, value, etc. and low group seems to have a little effect, by comparing the subjective class with the compared class. A. The result of a scholastic ability test High group had a great effect in the result of the first (Number and an expression) and second(An equation of a figure) scholastic ability test. As the time of research goes, the difference of average between the subjective class and the compared class has increased. Low group had no effect in the result of the first (Number and an expression) and the second (An equation of figure) scholastic ability test. But the difference of average grade between the subjective class and the compared class proved to be some efficient as time goes. (the first test is 0.94 and the second test is 3.33)We can find that the result of the third test (An exponent and log function) turned out be efficient. B. The change of mathematical attitudeHigh group had a great effect in confidence(+1.21), fiexibility(+1.92), will(-0.06), curiosity(+2.64), reaction(+1.50), value(+1.44). Low group appeared to be a little efficient in comparison between the subjective class and compared class. the average of both the subjective class and the compared class in low group decreased if not the result of pre-test but in that of pose-test. Therefore, we can find that the difference between mathematics of maddle school and that of high school gets bigger in Low group.C. The result of a question examinationAfter this research, the reaction that It is helpful to studying accomplishm- ent is 33.7%, the reaction that It is not helpful is 14.7%. After all, this research appears to be a positive reaction. After this study, the change of studying will seems to be much more not in Low group but in High group.

• 한국간호교육학회지
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• 제20권4호
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• pp.471-481
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• 2014

Purpose: This study investigates the relationship among stress, Yangsaeng and subjective happiness in female undergraduate nursing students in the Republic of Korea. Method: The subjects of this study were 283 female undergraduate nursing students in Korea. Data were collected using a self-reporting questionnaire. Data analysis included descriptive statistics, Pearson's correlation coefficients, independent t-tests, one-way ANOVA, Scheffe test, Stepwise multiple regression and Cronbach's ${\alpha}$. Results: Yangsaeng negatively correlated with stress (r=-.299, p<.001) but positively correlated with subjective happiness (r=.440, p<.001). Stress negatively correlated with subjective happiness (r=-.238, p<.001). Stepwise multiple regression revealed that Yangsaeng and satisfaction with the field of nursing explained 25.4% of subjective happiness. Conclusion: The Yangsaeng oriental health care regimen could lower stress and heighten subjective happiness. Therefore, Yangsaeng could be recommended as a feasible means of promoting health and subjective happiness.