• 제목/요약/키워드: Objective Quality-Evaluation-Index

검색결과 132건 처리시간 0.031초

Mahalanobis Distance를 이용한 주행 중 차량 실내소음의 음질평가 (Sound Quality Evaluation of Interior Noise of Driving Vehicle Using Mahalanobis Distance)

  • 박상길;이해진;배철용;이봉현;오재응
    • 한국소음진동공학회논문집
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    • 제18권1호
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    • pp.57-60
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    • 2008
  • Since human listening is very sensitive to sound, for evaluating of a sound quality is required. Therefore, in the analysis for each situation, the sound evaluation is composed with sound quality factor. My researchers spends their effort to make a more reliable and more accurate of sound in term of sound quality index for various system noise. The previous methods to evaluation of the SQ about vehicle interior noise are linear regression analysis of subjective SQ metrics by statistics and the estimation of the subjective SQ values by neural network. But these are highly dependent on jury test and have many difficulties due to various environmental factors. So, to reduce jury test weight. we suggested a new method using Mahalanobis distance for SQ evaluation. Threrefore, in this study Mahalanobis distance for the vehicle interior noise was derived using the objective SQ except jury test. Finnaly, the results of the SQ evaluation was analyzed discrimination between reference and abnormal group.

소음원의 영향이 고려된 가상 세탁음 제작을 통한 드럼 세탁기의 음질 인덱스 구축 (Sound Quality Evaluation for Laundry Noise by a Virtual Laundry Noise Considering the Effect of Various Noise Sources in a Drum Washing Machine)

  • 정재은;양인형;누룰 파와지;정운창;이정윤;오재응
    • 한국소음진동공학회논문집
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    • 제22권6호
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    • pp.564-573
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    • 2012
  • The objective of this study is to determine the effect for the sound quality according to the noise source and to build the sound quality index of the laundry noise. In order to compare laundry noise among the influence of noise sources, we made virtual laundry noises by synthesizing an actual laundry noise and each noise source such as a dropping noise, water noise, motor noise and circulation pump noise. We conducted a listening test by customers using virtual laundry noises. As a result of listening test, we found that the dropping noise has a decisive effect on the sound quality of the laundry noise. We conducted the multi regression analysis of sound quality for the laundry noise using the statistical data processing. It is verified to the reliability of the multi regression index by comparison with listening results and index results of other actual laundry noises. This study is expected to provide a guide line for improvement of the laundry noise.

한방병원(韓方病院)과 보건소(保健所) 내원(內院) 환자(患者)의 의료(醫療) 서비스 인식(認識) 비교(比較) (Health-Care Services Recognition Comparison of patient between Korean Medicine Hospital and Seoul Health Center)

  • 정순현;남승규;김영일
    • 혜화의학회지
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    • 제22권2호
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    • pp.119-141
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    • 2014
  • Objective : This study was designed to health-Care services recognition comparison of patient between Korean Medicine 00 Hospital and Seoul 00 Health Center. Methods : 277 subjects were participated in this study. After a treatment, we analyzed a patient type by using a questionnaire. After all treatment, we conducted a survey about Medical Trust Scale, Medical Happiness Index Scale, Service Quality Scale. To evaluate a satisfaction degree, we analyzed results of survey statistically. Results : The results of the analysis, Korean Medicine 00 Hospital group got a higher score than Seoul 00 Health Center group statistical significantly on Medical Trust Scale, Medical Happiness Index Scale, Service Quality Scale. Conclusion : Korean Medicine 00 Hospital group got a higher score than Seoul 00 Health Center group. It was more effective in Korean Medicine 00 Hospital group than Seoul 00 Health Center group.

GRBAS 음성평가와 음성장애지수 (GRBAS and Voice Handicap Index)

  • 손진호
    • 대한후두음성언어의학회지
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    • 제19권2호
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    • pp.89-95
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    • 2008
  • 주관적 음성평가는 음향분석기기를 이용한 객관적 음성 평가와 함께 음성분석에 유용하고 의미있는 평가방법이며 현재 알려진 검시법정 중에서 GRBAS 음성평가, VHI, patient self-perceptual voice rating이 가장 널리 사용되고 있고 인정받는 방법이다. 주관적 음성평가는 음성의 상태를 모두 대변할 수은 없으며 객관적인 음성평가에 대한 보완적인 의미를 가진다. 현재 개발되어 있는 주관적 음성평가 방법들이 유용한 평가도구이긴 하지만 나름대로의 문제점과 제한점을 가지고 있기 때문에 이에 대한 개선과 보완을 위한 지속적인 연구와 개발이 요구된다.

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한국어판 음성장애지수와 음성관련 삶의 질의 타당도 및 신뢰도 연구 (Validity and Reliability of Korean-Version of Voice Handicap Index and Voice-Related Quality of Life)

  • 김재옥;임성은;박선영;최성희;최재남;최홍식
    • 음성과학
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    • 제14권3호
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    • pp.111-125
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    • 2007
  • It is important to examine patients' subjective evaluation as well as objective measures and clinician's rating to assess voice disorders. This study aimed to evaluate validity and reliability of Korean-version of Voice Handicap Index (KVHI) and Voice-Related Quality of Life (KVQOL) with 113 adults with voice disorders and 111 normal adults. Content validity was verified by three experienced speech-language pathologists. Concurrent validity was revealed by examining the correlation among KVHI, KVQOL, and Voice Rating Scale as well as item discrimination coefficients. Total scores of KVHI and KVQOL of adults with voice disorders were significantly different from those of normal adults. Test-retest reliability and internal consistencies were significantly high in both KVHI and KVQOL. Correlations among scores of each subscale and total score were also significantly high in each tool. The study revealed that KVHI and KVQOL are suitable tools to be used in clinics and research areas in Korea, which can subjectively evaluate the effects of voice disorders on daily life as well as on quality of life.

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구안와사 환자의 삶의 질에 대한 연구 (A Research on Quality of Life of Facial Palsy Patients)

  • 문효;박민철;홍석훈;윤인환;이동효;이충호;김남권
    • 한방안이비인후피부과학회지
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    • 제22권1호
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    • pp.157-171
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    • 2009
  • Objective : The face is very important for human communication. So facial palsy patients experience not only physical disturbances but also serious emotional stress. Therefore the focus of treatment must be to not only aid the recovery of objective symptoms but also the improvement of subjective quality of life. However there has not been enough Oriental Medical study in this field until now. Thus this study was begun to suggest a useful index for the treatment of facial palsy. Methods : Grade of paralysis, sequelas, and quality of life were used for evaluation. To evaluate Grade of paralysis, House-Brackman Grade was used as the Gross scale and Kim's Grade was used as the Regional scale. Sequelas were evaluated by muscle contraction, synkinesis, NA, and grade of philtrum tilt. Quality of life was evaluated by SF-36v2, Facial Disability Index, and Vas. Results & Conclusion : 1. The change of grade of paralysis between the early and the present time reveals remarkable improvement statistically. 2. There was a remarkable improvement in all parts of quality of life except several areas of SF-36(RP, RE, MH, VT) 3. In only PF(Physical Function) of FDI, quality of life increased remarkably according to the improvement of grade of paralysis. 4. There is the positive relationship among Kim's grade, HB grade and Synkinesis 2. 5. Synkinesis among sequelas has the greatest effect on quality of life. And muscle contraction, change of NA, and grade of philtrum tilt also affect quality to some extent. 6. There was no remarkable relationship between the period of illness and change of quality of life. 7. Change of NA is shown after 3 months of illness and synkinesis becomes worse after 6 months of illness.

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국방 전력지원체계 기술수준조사에 대한 연구 (A Study on Defense Technology Level Evaluation of Force Support Systems)

  • 이동헌;홍성돈;김영건
    • 제어로봇시스템학회논문지
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    • 제20권2호
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    • pp.112-119
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    • 2014
  • A force support system is composed of capital components such as combat equipments, supplies and so on to enable constant fighting power capability. Private technology level evaluation is on the rise as an important spin-on method in force support systems, which requires 92% of total munitions requirements, to obtain superior private technology. The evaluation of the private sector technology level on Korean force support systems has been conducted for the first time as follows: this research chose 38 items to be acquired within 2-3 years and grouped either identical or similar technology among those 38 items. A technology evaluating method was established based on the analysis of domestic and foreign technology level evaluations. Evaluation was performed by a Delphi survey from 180 private and military experts. To obtain an objective index and raise political availability, a technology system map and standard document were developed and applied to all 38 items.

실험계획법을 이용한 차량공조시스템의 음질 특성 분석 (Analysis of Subjective Sound Quality Characteristics for the HVAC using the Design of Experiments : Sharp, Annoy)

  • 윤태건;심현진;이정윤;오재응;김성수
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2005년도 춘계학술대회논문집
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    • pp.634-637
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    • 2005
  • A subjective index of sound quality when it hit him is required since human listening is very sensitive and complex. Sound quality evaluation it leads consequently rightly in each situation and it composes a sound quality factor. But one of the levels in interest frequency range is substitute we cannot see the tendency of frequency substitute at whole that is executes a clear voice evaluation. Design of experiment is used and dividing 12 equally in frequency domain, the sound quality using sharpness and annoyance is performed by modifying each of frequency domains. Design of experiment method reduces much number experiment very effectively and each main effect of domain solution analysis, such as a case of sharpness and annoyance, the change of domain (increase and decrease of sound pressure level, or change nil) can grasp a type of effect should have influenced to a sound quality, and it will be able to select the objective frequency domain which hits to the sound quality. Through these obtained results the physical changes of level at arbitrary frequency domain sensitivity can be adapted.

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실험계획법을 이용한 차량 공조시스템의 음질 특성 분석 (Analysis of Subjective Sound Quality Characteristics for the HVAC System using the Design of Experiments)

  • 오재응;윤태건;아미누딘 빈 아부;심현진;이정윤;김성수
    • 한국정밀공학회지
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    • 제22권11호
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    • pp.59-63
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    • 2005
  • Since human listening is very sensitive when the sound hit him, the subjective index of sound quality is required. Therefore, at each situation of sound evaluation its composed with the sound quality factor. But, when substituting the level of one frequency band we could not see the tendency of substitution at whole frequency band during the sound quality evaluation. In this study a design of experiment is used. The frequency domain is divided into an equally 12 parts and each level of domain whether is given increase or decrease due to the change of frequency band based on 'sharp' and 'annoy' of the sound quality is analyzed. By using the design of experiment the number of test is reduce very effectively by the number of experiment and each band the main effect will be as a solution. The case of sound quality for 'sharp' and 'annoy' at each band, the change of band (increase or decrease of sound pressure or keep maintain) which will be the most effects on the characteristics of sound quality can be identify and this will be able to us to select the objective frequency band. Through these obtained results the physical changes of level at arbitrary frequency domain sensitivity can be adapted.

Data Governance 정량평가 모델 개발방법의 제안 (A Quantitative Assessment Model for Data Governance)

  • 장경애;김우제
    • 한국경영과학회지
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    • 제42권1호
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    • pp.53-63
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    • 2017
  • Managing the quantitative measurement of the data control activities in enterprise wide is important to secure management of data governance. However, research on data governance is limited to concept definitions and components, and data governance research on evaluation models is lacking. In this study, we developed a model of quantitative assessment for data governance including the assessment area, evaluation index and evaluation matrix. We also, proposed a method of developing the model of quantitative assessment for data governance. For this purpose, we used previous studies and expert opinion analysis such as the Delphi technique, KJ method in this paper. This study contributes to literature by developing a quantitative evaluation model for data governance at the early stage of the study. This paper can be used for the base line data in objective evidence of performance in the companies and agencies of operating data governance.