• 융합보안논문지
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• 제23권2호
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• pp.55-66
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• 2023

최근 전세계적으로 사회 모든 분야에서 인공지능 학습용 데이터에 관한 선행연구를 기반으로, 인공지능 학습용 데이터의 가치를 높이고 고품질 데이터를 확보하고자 하는 움직임이 늘고 있다. 따라서, 고품질 데이터를 확보하기 위한 구축사업에서는 품질관리가 매우 중요하다. 이에, 본 논문에서는 인공지능 학습용 데이터를 구축할 시 고품질데이터 확보를 위한 품질관리와 그에 따른 구축공정별 개선방안을 제시하였다. 특히, 인공지능 학습을 위해 구축되는 비정형데이터는 데이터 품질의 80% 이상이 구축과정에서 결정된다. 본 논문에서는 비정형데이터 이미지/영상데이터에 대한 품질검사를 통해 구축단계에서의 획득, data cleaning, labeling 모델에서 발생된 검사절차 및 문제 요소를 해결함으로써 고품질 데이터 확보 방안을 제시하였으며, 제시한 방안을 토대로 인공지능 학습용 데이터 구축에 참여하는 연구단체와 사업자들에게 데이터의 품질편차를 극복하기 위한 대안이 될 것으로 기대된다.

• 한국소음진동공학회논문집
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• 제21권10호
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• pp.883-889
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• 2011

The brand sound of vehicle diesel engine is recently one of the important advantage strategies in the automotive company. Because various noise components masked under high frequency level can be audible in quieter driving situation. Many researches have been carried out for subjective and objective assessments on vehicle sounds and noises. In particular, the interior sound quality has been one of research fields that can give high quality feature to vehicle products. Vehicle interior noise above 500 Hz is usually controlled by sound package parts. The materials and geometries of sound package parts directly affect on this high frequency noise. This paper describes the sound quality evaluation method for the vehicle diesel engine noise to establish objective criteria for sound quality assessment. Considering the sensitivity of human hearing to impulsive sounds such as diesel noise, the human auditory mechanism was simulated by introducing temporal masking in the time domain. Furthermore, each of the human auditory organs was simulated by computer codes, providing reasonable analytical explanations of typical human hearing responses to diesel noise. This method finally provides the sound quality index of vehicle diesel engine noise that includes high frequency intermittent offensive sounds caused by impacting excitations of combustion and piston slap.

• Human Ecology Research
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• 제57권2호
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• pp.281-293
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• 2019

This study aimed to examine the effects of socially prescribed perfectionism, sleep duration, and sleep quality on suicidal ideation in Korean high school students and to investigate if sleep duration and quality moderated the relationship between socially prescribed perfectionism and suicidal ideation. The participants of this study were 840 students (544 boys and 296 girls) from six high schools located in Seoul and Gyeonggi-do. The Suicidal Ideation Questionnaire (Reynolds, 1988) was used to measure suicidal ideation. And the socially prescribed perfectionism was assessed by the Multidimensional Perfectionism Scale (Hewitt & Flett, 1991). The students were asked to respond to a question regarding how long they slept a day as well as the Sleep Quality Scale (Yi, 2005). The data were analyzed with descriptive statistics and hierarchical regressions. The moderating effect of sleep duration and quality were investigated using the analysis procedures proposed by Baron and Kenny (1986). The results showed that the level of socially prescribed perfectionism and sleep quality increased the level of suicidal ideation. In addition, sleep quality moderated the relationship between socially prescribed perfectionism and suicidal ideation. The effect of socially prescribed perfectionism on suicidal ideation was greater when sleep quality was poor, compared to when it was good.

• 한국물환경학회지
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• 제27권2호
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• pp.228-234
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• 2011

The goal of water quality management on stream and watershed is to focus not on discharged loads management but on a water quality management. Discharged loads management is not goal of water quality management but way for perform with total maximum daily loads management. It is necessary to estimate the relation between non-point source with stromwater runoff (NPSSR) and water quality to select a watershed where it is required to manage NPSSR for water quality improvement. To evaluate the effects of NPSSR on stream's water quality, we compare the aspects of water quality in dry and wet seasons using flow duration curve analysis based on flow rate variation data by actual surveying. In this study we attempt to quantify the variation characteristic of water quality and estimate the Inflow characteristic of pollution source with water quality and flow rate monitoring on 10 watersheds. We try to estimate water quality and flow rate by regression analysis and try again regression analysis with each high and low water quality data more than estimations. An analysis of relation between water quality and flow rate of 10 watersheds shows that the water quality of the Nonsan and the Ganggyeong streams had been polluted by NPSSR pollutants. Other eight streams were important point source more than NPSSR. It is wide variation range of $BOD_5$ also high average concentration of $BOD_5$. We have to quantify water quality variation by cv1 in wet season and cv365 in dry season with comparing the estimate of high water quality and low water quality. This method can be used to indicator for water quality variation according to flow rate.

• 한국재료학회:학술대회논문집
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• 한국재료학회 1993년도 추계 학술발표 강연 및 논문 개요집
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• pp.85-85
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• 1993

• 한국자기공명학회논문지
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• 제21권4호
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• pp.119-125
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• 2017

The plucking season of green tea leaves is one of the important parameters that decide their metabolic diversity, quality, and prices. The effects of plucking sghlwleasons on green tea metabolites were investigated through metabolite profiling by $^1H$ NMR spectroscopy. The orthogonal projection on latent structure-discriminant analysis (OPLS-DA) showed clear discriminations of green teas by three different grades depending on plucking seasons: Ujeon, Sejak, and Jungjak. These results suggested that the nine peak groups could be used for diagnostics for identification of high quality Ujeon grade of green tea.

• 통합자연과학논문집
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• 제8권2호
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• pp.141-144
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• 2015

As the visual quality of X-ray images is a critical reference for the accuracy of the clinical diagnosis, the methods to improve the quality of X-ray images have been investigated. Among many existing methods, using frequency domain filter is a very powerful method to improve the visual quality of images. In this paper, the inherent noises of the input images are suppressed by adding the Laplacian image to the subjected image. The medical X-ray images using the optimal high pass filter has shown improved edges. Further, the optimal high frequency emphasis filter has shown the improved contrast of flat areas by using the result image from the optimal high pass filter. Also the resulting images of the global contrast have improved by the histogram equalization. As a result, the proposed methods have shown enhanced contrast and edges of the images with noise canceling effect.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2008년도 하계학술대회 논문집 Vol.9
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• pp.499-499
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• 2008

High voltage transformer of Diagnostic X-ray system has been contributed to wiping out disease to get a good quality images from patients. High voltage transformer of diagnostic X-ray system has been usefully used for diagnostic purpose but if high voltage transformer performances are deteriorated, low quality image will be archived. In this case, operator has to exposure to get a more good quality images. In this case, unexpected radiation could be exposed to patient and it is very harmful to the patient. And I would like to design and make equipment to checkable high voltage transformer performance after that I wish to test and study what it is most influences in radiation output quality.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 2003년도 추계학술대회 및 정기총회
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• pp.67-70
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• 2003

This paper analyzes the causal relationship between customer satisfaction and customer loyalty in Korean High-speed Internet market, where has achieved a rapid development in these days. According to the previous literatures, profitability results from customer loyalty influenced by customer satisfaction. So, we firstly define and analyze their relationships with the survey data from 737 subscribers, by using Factor Analysis and SEM(Structural Equation Model). Secondly, we find and select major cause variables to affect customer loyalty. Finally, we suggest some useful implications to marketers on the basis of the analysis results. As a result, customer loyalty depends on the degree of customer satisfaction on network quality and service quality in high-speed Internet service. Particularly the satisfaction level on network quality affects customer loyalty relatively stronger than one on service quality. Thus it is suggested that marketers invest in improving network quality rather than service quality to enhance customer loyalty.

• 한국작물학회지
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• 제36권4호
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• pp.351-359
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• 1991

우리나라에서의 미곡의 유통은 통일계와 일반계는 구분되어 이루어지고 있으나 식미가 다른 품종간에는 대부분 구분되지 않고 혼합되어 관리ㆍ유통되고 있다. 그러나 쌀의 식미는 품종간에 차이가 크고 국민들은 양식미쌀을 선호하므로 저식미쌀에 찹쌀, 또는 고식미쌀을 일정비율 혼합하여 식미향상효과를 얻을 수 있는지와 밥맛이 다른 품종들의 쌀을 일정비율로 혼합했을 때 밥맛에 미치는 영향을 밝히고자 하였다. 시료는 1987년 및 1989년산 통일계벼, 1990년 고성 및 부여산 일반계, 1989년산 통일계 삼강벼. 일반계낙동벼. 1990년산 추청벼, 동진벼 및 진부10호를 식미관능검사 1주일 전에 12분게로 도정하여 사용하였고 시판되는 최고가의 이천쌀과 일반계 찹쌀 상품을 공시하였으며, 식미관능검사는 국립농산물검사소 검사반과 작물시험장 미질 검정실에 의해 실시하였다. 그 결과는 다음과 같이 요약된다 1. 저식미찰(일반계)에 시판 고식미쌀을 중량비 80%까지 혼합하여도 식미향상은 없었으나 동진벼쌀(고식미)을 80% 혼합했을 때에는 동진벼쌀과 동등한 평점을 얻는 식미향상효과가 있었다. 중식미쌀에 시판 시판 고식미쌀을 80% 혼합한 경우는 식미가 크게 향상되었다. 2 식미가 불량한 통일계 고미('87, ＇89년산)에 시판되는 일반계 찹쌀상품을 20% 혼합하였을 때 식미가 향상되었으나, 중하위 식미의 통일계 중상위 식미의 일반계쌀에는 찹쌀 20% 혼합시에도 유의적 효과가 인정되지 않았다. 3. 중위 및 상위 식미품종인 낙동벼, 동진벼, 추청벼 간 여러가지 비율로 혼합한 경우 단일품종과 비교하여 일정한 경향의 유의적 식미 변화가 인정되지 않았다.