• Journal of Broadcast Engineering
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• v.28 no.3
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• pp.302-313
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• 2023

This paper aims to develop a framework that can fully automate the quality management of training data used in large-scale Artificial Intelligence (AI) models built by the Ministry of Science and ICT (MSIT) in the 'AI Hub Data Dam' project, which has invested more than 1 trillion won since 2017. Autonomous driving technology using AI has achieved excellent performance through many studies, but it requires a large amount of high-quality data to train the model. Moreover, it is still difficult for humans to directly inspect the processed data and prove it is valid, and a model trained with erroneous data can cause fatal problems in real life. This paper presents a dataset reconstruction framework that removes abnormal data from the constructed dataset and introduces strategies to improve the performance of AI models by reconstructing them into a reliable dataset to increase the efficiency of model training. The framework's validity was verified through an experiment on the autonomous driving dataset published through the AI Hub of the National Information Society Agency (NIA). As a result, it was confirmed that it could be rebuilt as a reliable dataset from which abnormal data has been removed.

• Journal of the Korean Magnetic Resonance Society
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• v.6 no.1
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• pp.38-44
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• 2002

60% Pt on Vulcan XC-72 with similar Pt sizes to fuel cell grade Pt black was investigated by $\^$13/C nuclear magnetic resonance spectroscopy (NMR), cyclic voltammery (CV), transmission electron microscopy (TEM). Experiments were carried out on electrochemically cleaned samples as well as as-received. The TEM and CV results showed that the average particle sizes were changed by cleaning. However, the chemical shift （$\delta$$\_$G/） of $\^$13/C of $\^$13/CO absorbed on Pt surfaces did not show any appreciable variation with particle size change as did in Pt black. These results indicate that a combination of different analytic techniques is essential to understand the properties of the metal particle catalysts and that the presence of carbon black support strongly influences the NMR data, probably through metal-support interaction.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2004.04a
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• pp.149-152
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• 2004

Generally the wafer is increased by 300mm. We are desired that the wafer is prevented from pollutions of metal contaminant on surface of wafer. We have to develop new wafer cleaning process of IC Manufacturing that can reduce DI water and chemical by removal of the wafer cleaning process step. Moreover, it is difficult to control temprature and density of chemical in spite of rapidly increasing automation of system. We design smart module controller for new generation of semiconductor wet station with intelligent algorithm using data that is taken by computer simulation for optimal system.

• Journal of the Korean Home Economics Association
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• v.41 no.6
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• pp.105-117
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• 2003

This study was intended to investigate specific plan to enhance the adolescents consumers' environment-friendly consumption behavior in their consumption. For this purpose, a questionnaire was conducted among middle and high school students. As a result, the following findings were obtained: The related items in the questionnaire were categorized into factors in an attempt to investigate consumers' environment-friendly consumption. Factor I was coded as active recycling and the use of refilled products and Factor Ⅱ was coded as the behavior of active savings. Adolescents consumers with more experiences in environmental activity showed the higher level of behavior of environment-friendly consumption, and female adolescents consumer did so than male adolescents consumer And adolescents consumers showed the higher level of practical behavior of environment-friendly consumption in case of data and document arrangement than in case of cleaning, and in case of voluntary social service than in case of only cleaning.

• The Research Journal of the Costume Culture
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• v.11 no.6
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• pp.902-912
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• 2003

The purpose of this research was two-folds; first, to investigate the type of soil contaminated in the Hunsang excavated from the Milchang-gun burial of Mapo for the purpose of proposing the adequate washing method, second, to utilize the chemical degradation result obtained from the previous research to identify the natural dye source used in the Hunsang textile. The application of KS K0251 test showed that the soil was more oleophilic than hydrophilic thus indicating that wet cleaning was more adequate that dry cleaning for the removal of Hunsang soil. The GC-MS result of the Hunsang extraction showed dimethyl phthalate and 2,4-di-tert-butylphenol as its degradation product and these coincided with the degradation products from the alizarin standard data of previous research. The comparison of the two suggested that it is likely that Hunsang was dyed with madder which has alizarin as its major chromophore.

• Journal of the Semiconductor & Display Technology
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• v.20 no.4
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• pp.146-150
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• 2021

Plasma information based virtual metrology (PI-VM) that predicts wafer-to-wafer etch rate variation after wet cleaning of plasma facing parts was developed. As input parameters, plasma information (PI) variables such as electron temperature, fluorine density and hydrogen density were extracted from optical emission spectroscopy (OES) data for etch plasma. The PI-VM model was trained by stepwise variable selection method and multi-linear regression method. The expected etch rate by PI-VM showed high correlation coefficient with measured etch rate from SEM image analysis. The PI-VM model revealed that the root cause of etch rate variation after the wet cleaning was desorption of hydrogen from the cleaned parts as hydrogen combined with fluorine and decreased etchant density and etch rate.

• Proceedings of the Korean Society for Language and Information Conference
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• 2002.02a
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• pp.455-464
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• 2002

No Abstract(See Full Text)

• 한국항공운항학회:학술대회논문집
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• 2005.05a
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• pp.58-62
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• 2005

LOSA is spreading rapidly over the world to improve safety of the airlines using threat and error management system. LOSA has shown its success on the major improvement on many areas including the riskiest phase called the blue box, which is the busiest during approach and landing. Asiana Airlines has completed data collection in 2004 and round table for the data cleaning, to implement safety change process. The propose of this paper is to introduce the LOSA, ICAO DOC 9803, and the experience of Asiana.

• 한국정보디스플레이학회:학술대회논문집
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• 2003.07a
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• pp.407-410
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• 2003

We will introduce our new concept deposition system for SMOLED manufacturing in this conference. This system is designed to deposit organic and metal material to downward to overcome the limit of substrate size and process tact time hurdle for OLED mass production, and is organized with organic deposition chamber, substrate pre-cleaning chamber, metal deposition chamber and encapsulation system. These entire process chambers are integrated with linear type substrate transfer system. We also compare our new SMOLED manufacturing system with conventional vacuum deposition systems, and show basic organic thin film property data, organic material deposition property data, and basic device property.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.8
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• pp.5189-5197
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• 2015

This study is intended to look into early childhood teachers' perceptions and needs for forest experience activities. To achieve this, a survey was carried out to 170 early childhood teachers in kindergartens and child care centers in Daejeon city. The SPSS(Statistical Package for Social Science) v. 18.0 was used for data analysis through the process of data coding and data cleaning. The frequency analysis was conducted for the general state of those surveyed. The frequency analysis, ANOVA and factor analysis were conducted for the perceptions and needs for forest experience activities. The findings showed that early childhood teachers had positive perceptions for the educational effects of forest experience activities. Especially, they perceived that the educational programs of forest experience activities need to be highly recommended to early children as forest experience education is important for forest experience activities. Consequently, forest experience education is just as important and useful for early children to learn the importance of coexistence with human and nature, and develop a sense of community by interacting with nature.