• Journal of Biosystems Engineering
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• v.37 no.6
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• pp.411-419
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• 2012

Purpose: Nondestructive evaluation of seed viability is a highly demanded technique in the seed industry. In this study, hyperspectral imaging system was used for discrimination of viable and non-viable radish seeds. Method: The spectral data with the range from 400 to 1000 nm measured by hyperspectral reflectance imaging system were used. A calibration and a test models were developed by partial least square discrimination analysis (PLS-DA) for classification of viable and non-viable radish seeds. Either each data set of visible (400~750 nm) and NIR (750~1000 nm) spectra and the spectra of the combined spectral ranges were used for developing models. Results: The discrimination accuracy of calibration was 84% for visible range and 76.3% for NIR range. The discrimination accuracy of test was 84.2% for visible range and 75.8% for NIR range. The discrimination accuracies of calibration and test with full range were 92.2% and 92.5%, respectively. The resultant images based on the optimal PLS-DA model showed high performance for the discrimination of the nonviable seeds from the viable seeds with the accuracy of 95%. Conclusions: The results showed that hyperspectral reflectance imaging has good potential for discriminating nonviable radish seeds from massive amounts of viable seeds.

• Korean Journal of Social Welfare
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• v.56 no.2
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• pp.121-144
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• 2004

This study shows that people with disabilities are very disadvantageous in employment and wage, which is originated from social discriminations. In this study, numerical value of employment-discrimination was calculated as 33.4%, and that of wage-discrimination calculated as 67.3%. But these discriminations are only come from one's disability not from productivity. So, Government must legislate 'The Discrimination Prohibit Act for People with Disabilities' rapidly to promote of people with disabilities' life qualities. Nobody knows when he get disabilities. Together with 'The Discrimination Prohibit Act for People with Disabilities', Government also have to improve people with disabilities' way of working, mobility, and provide assistive technology for the promotion of people with disabilities' employment rate and wage.

• Journal of Convergence for Information Technology
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• v.8 no.2
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• pp.133-140
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• 2018

This study aims to examine the effect of discrimination experience on job satisfaction among working women with disabilities, focusing on meditating effect of self-esteem. To this end, the data from the 8th year of the employment panel of disabled population surveyed by the EDI; Korea Employment Agency for the Disabled was used for the study. The data collected from 549 working women of disabilities from EDI was analysed by using the path analysis. The findings are as follows: first, discrimination experience of working women with disabilities had a significantly negative effect of their job satisfaction. Second, self-esteem presented the mediating effect between discrimination experience and job satisfaction. Based on the results, this study proposed various programs to increase job satisfaction by enhancing self-esteem in situations where the experience of discrimination among women with disabilities is high and suggested practical implications to increase job satisfaction of working women with disabilities.

• Journal of Convergence for Information Technology
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• v.11 no.8
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• pp.42-52
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• 2021

This study was conducted to identify the influence of the discrimination experienced in daily life and social isolation on depression among older adults living in the community. This study was a secondary analysis of the data of 2017 Living Profiles of Older Adults Survey. The participants was a representative sample among the older adults 65 years and older. Data from 10,041 older adults were analyzed for this study. Hierarchical logistic regression analyses were used. When the discrimination experiences was added in model 1, the likelihood of being depressed was 1.95(1.60-2.36) times higher for those who experienced discrimination comparing with those who didn't experienced discrimination. When the social isolation was added in model 2, the likelihood of being depressed was 1.89(1.55-2.30) times higher in those who experienced discrimination. In addition, as the number of close friends, neighbors, and acquaintances decreased by one, the likelihood of being depressed increased by 1.14 times. Those who were isolated from family, friends, neighbors and acquaintances were 3.90 times more likely to be depressed. Therefore, social efforts are needed to reduce the experience of discrimination. Maintaining a social network or creating a new network will contribute to lowering the level of depression in older adults who have experienced discrimination.

• Journal of the Korea Convergence Society
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• v.9 no.10
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• pp.347-353
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• 2018

The purpose of this study is to investigate the relevance of discrimination and violence experienced by persons with disabilities to suicidal ideation of persons with disabilities. The study data used the 2014 national survey of the disabled persons and 6,332 people were included in the analysis. Suicidal ideation was defined as whether or not suicide was actually attempted in the last year. The reference group was a group without suicidal ideation and logistic regression analysis of violence discrimination and experience was performed. The study found that 18.5%(n=1.171) of people with disabilities had suicidal ideation. The risk of suicidal ideation was higher when there was language violence and mental violence because of being disabled. When adolescents experienced sexual harassment, sexual abuse, and sexual violence, the risk of suicide was 16.7(CI=4.22-66.18) times higher. The risk of suicidal ideation was 5.8(CI=2.34-14.6) times higher for those who did not know the violent offenders and 4.08(CI=2.05-8.12) times higher for coping strategies that ignored or tolerated violence. The risk of suicidal ideation was 1.60(CI=1.24-2.08) times higher in the case of discrimination experienced at the time of marriage and it was 2.73(CI=4.22-66.18) times higher when they had always felt the discrimination due to disability. The suicidal ideation that comes from experiences of violent experience and discrimination can appear as actual suicide. Therefore, it is necessary to support the suicide prevention program at the community level, along with the care and consideration of the family and society of the disabled for the well-being of the disabled.

• Journal of the Korean Society of Child Welfare
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• no.55
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• pp.31-55
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• 2016

This study investigated the impact of the experience of being discriminated on their actual experience of discrimination, and verified the moderating effect of the education for human rights. The data used in this study were sampled from the 2014 children and youth human rights survey of Korea National Youth Policy Institute, and 4,023 students in middle or high school were selected for the final data analysis. The moderation model was analyzed by applying SPSS PROCESS macro. The analysis suggested the following. First, it was shown that the experience of being discriminated and the level of help and frequency of the education for human rights were significantly distinguished in the statistics. Second, even though the experience of being discriminated and the level of help of the education for human rights meaningfully influenced the experience of discrimination, frequency of education did not. Third, it was verified that the level of help from education of human rights moderates the relationship between the experience of discrimination and the experience of being discriminated. It also showed that the higher the level of help is, the more the experience of being discriminated exerts influence on the experience of discrimination. Thus, on the basis of the results, the theoretical discussion on the youth discrimination was drawn out and the practical implication on the direction of the education for human rights was suggested.

• Journal of Korean Biological Nursing Science
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• v.20 no.1
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• pp.11-19
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• 2018

Purpose: The purposes of this study were to perform items analysis using the classical test theory (CTT) and the item response theory (IRT), and to establish the validity and reliability of the Korean version of pressure ulcer prevention knowledge. Methods: The 26-item pressure ulcer prevention knowledge instrument was translated into Korean, and the item analysis of the 22 items having an adequate content validity index (CVI), was conducted. A total of 240 registered nurses in 2 university hospitals completed the questionnaire. Each item was analyzed applying CTT and IRT according to 2-parameter logistic model. Response alternatives quality, item difficulty and item discrimination were evaluated. For testing validity and reliability, Pearson correlation coefficient and Kuder Richardson-20 (KR-20) were used. Results: Scale CVI was .90 (Item-CVI range= .75-1.00). The total correct answer rate for this study population was relatively low as 52.5%. The quality of response alternatives was found to be relatively good (range= .02-.83). The item difficulty of the questions ranged form .10 to .86 according to CTT and -12.19 to 29.92 according to the IRT. This instrument had 12-low, 2-medium and 8-high item difficulty applying IRT. The values for the item discrimination ranged .04-.57 applying CTT and .00-1.47 applying IRT. And overall internal consistency (KR-20) was .62 and stability (test-retest) was .82. Conclusion: The instrument had relatively weak construct validity, item discrimination according to the IRT. Therefore, the cautious usage of a Korean version of this instrument would be recommended for discrimination because there are so many attractive response alternatives and low internal consistency.

• Journal of The Korean Society of Grassland and Forage Science
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• v.40 no.4
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• pp.259-264
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• 2020

The aim of this study was to investigate the feasibility of discrimination 12 different cultivar of sorghum × sudangrass hybrid (Sorghum genus) seed through near infrared spectroscopy (NIRS). The amount of samples for develop to the best discriminant equation was 360. Whole samples were applied different three spectra range (visible, NIR and full range) within 680-2500 nm wavelength and the spectrastar 2500 Near near infrared was used to measure spectra. The calibration equation for discriminant analysis was developed partial least square (PLS) regression and discrimination equation (DE) analysis. The PLS discriminant analysis model for three spectra range developed with mathematic pretreatment 1,8,8,1 successfully discriminated 12 different sorghum genus. External validation indicated that all samples were discriminated correctly. The whole discriminant accuracy shown 82 ~ 100 % in NIR full range spectra. The results demonstrated the usefulness of NIRS combined with chemometrics as a rapid method for discrimination of sorghum × sudangrass hybrid cultivar through seed.

• Proceedings of the Earthquake Engineering Society of Korea Conference
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• 2003.09a
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• pp.13-19
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• 2003

Discriminant method using seismic signal was studied for discrimination of surface explosion. By means of the seismic spectral characteristics, multi-variate discriminant analysis was performed. Four single discriminant techniques - Pg/Lg, Lg1/Lg2, Pg1/Pg2, and Rg/Lg - based on seismic source theory were applied to explosion and earthquake training data sets. The Pg/Lg discriminant technique was most effective among the four techniques. Nevertheless, it could not perfectly discriminate the samples of the training data sets. In this study, a compound linear discriminant analysis was defined by using common characteristics of the training data sets for the single discriminants. The compound linear discriminant analysis was used for the single discriminant as an independent variable. From this analysis, all the samples of the training data sets were correctly discriminated, and the probability of misclassification was lowered to 0.7％.

• Journal of Biosystems Engineering
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• v.24 no.3
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• pp.225-234
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• 1999

This study was performed as a basic research for establishing an objective quality evaluation method on whole bulbs of garlic. The size of a whole bulb of garlic, the number and the uniformity of complete individual garlics, and the existence of bad individual garlics in the whole bulb of garlic were selected as quality grading factors. Quality discrimination algorithms with machine vision techniques were developed and verified for the four factors based on morphological and physical features of whole bulbs of garlic. Based on the results, the size discrimination by the projected area of a whole bulbs of garlic suggested four grading levels and the algorithm for predicting the number of complete individual garlics based on the peaks on its projected boundary showed ${\pm}$0.78 prediction error. In addition, the uniformity represented by coefficient of variation could be divided into four levels, but the algorithm for discriminating the existence of bad individual garlics in a whole bulb of garlic was not effective.