• International Journal of Reliability and Applications
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• v.1 no.2
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• pp.155-165
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• 2000

In this paper, we propose some estimators of Kullback- Leibler Information functions using the data from three step stress accelerated life tests. This acceleration model is assumed to be a tampered random variable model. Some asymptotic properties of proposed estimators are proved. Simulations are performed for comparing the small sample properties of the proposed estimators under use condition of accelerated life test.

• Proceedings of the IEEK Conference
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• 2002.07b
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• pp.991-994
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• 2002

Photon mapping is an efficient global illumination technique for realistic image synthesis that has been developed in computer graphics. In this paper, an adaptive photon mapping in the use of automatic differentiation is proposed. Since the automatic differentiation is used when photons emit from the light sources through the scene, we can check the variation of surrounding shape. Therefore, we can decrease the number of photons and generate an image in relatively low computational cost.

• Proceedings of the CALSEC Conference
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• 2001.08a
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• pp.439-448
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• 2001

Data Alignment is achieved when all trading partners information systems are maintained automatically synchronising with the suppliers information systems on a continuing basis. Electronic catalogues facilitate the ongoing synchronisation of data between trading partners and large retailers in United States and Canada use electronic catalog in order to get rid of non-value added paperwork and manual reconciliation. Data Alignment will dramatically improve the effectiveness of E-Commerce and Supply Chain initiatives including electronic Marketplaces, Collaborative Planning and Forecasting and continuous replenishment processes.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2000.11a
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• pp.5-24
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• 2000

Access to computers and the internet and the ability to effectively use this technology are becoming increasingly important for full participation in Korea′s economic, education, and social life. In recent years, access to computers and internet has exploded. Unfortunately, there is strong evidence of "digital divide"-gap between those individual and communities that have access to these information technology and those who don′t. This research focus on the elementary school students in Taejon, Korea. We found that there is digital divide among children and also different result between access to information technology and use of contents to information technology.

• Asia pacific journal of information systems
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• v.8 no.1
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• pp.125-144
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• 1998

This article describes the use of Internet as a means of operating the class which is business simulation game. The aims of investigation are to summarize the characteristics of distance learning using information technology, to find proper operating procedures for the internet class focusing on small group formation, to check the major factors affecting the teaching effectiveness, and to suggest the business simulation game as a proper distance learning class using internet.

• Journal of Korea Society of Industrial Information Systems
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• v.23 no.4
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• pp.55-67
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• 2018

The objective of this study is to investigate the effect of ERP system quality factors on the system use satisfaction and on personal and organizational performances. For achieving this objective, we investigated the interrelationship among quality factors, use satisfaction and business performance in the companies which operate the ERP system using questionnaires, whereas many previous studies focused on general quality factors such as the relationship between system quality and use satisfaction on organizational performance. The difference between our study and previous studies is that we classified the information system quality into three categories (system quality, information quality, and service quality) before analyzing the respective relationship among three identified variables (use satisfaction, individual performance and organization performance). The result of this study proved that the system quality, information quality, and service quality considered as the ERP system quality factors have a positive effect on user satisfaction level, respectively.

• Asia pacific journal of information systems
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• v.25 no.4
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• pp.662-685
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• 2015

The use of global mobile technology has increased exponentially. In particular, a survey of consumers in the Philippines showed that 83% "could not live" without their mobile phones. We investigated factors, such as ease of use and personal innovativeness, to elucidate the consumer adoption of mobile technologies in the Philippines, to integrate existing adoption theories for academics and provide recommendations to practitioners based on our findings. Our research questions are as follows: (1) What key factors drive adoption of mobile technologies by Filipino consumers?; (2) Are Filipino consumers innovative in their use of mobile technologies?; And (3) How can telecom companies retain their customers? A structural equation model, which was built from a survey of 528 mobile Filipino consumers, showed support for repurchase intention to use mobile technologies. The hypotheses were generally supported by variables related to mobile phone usage with the Philippine consumer sample. Results support all of the hypothesized relationships for consumers using mobile technologies. Personal innovativeness did load on both attitude and repurchase intention for mobile applications as originally hypothesized but was strongly loaded for attitude toward using. This research is a first step in understanding the adoption of mobile applications by Filipino consumers. We initially hypothesized that consumer behavior toward mobile applications would involve constructs of innovativeness, ease of use, and satisfaction; however, we found that ease of use was less significant in understanding repurchase intention to use mobile technologies. Personal innovativeness was more important in explaining satisfaction with mobile application attitudes and repurchase intention. The Filipino context of this study also provides other interesting implications. As the Philippines transitions into a more international market, western products start to guide market behavior, particularly consumer adoption.

• Journal of Climate Change Research
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• v.8 no.4
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• pp.329-337
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• 2017

In this study, land-use changes from 1990 to 2010 in Jeju Island by different approaches were produced and compared to suggest a more efficient approach. In a sample-based method, land-use changes were analyzed with different sampling intensities of 2 km and 4 km grids, which were distributed by the fifth National Forest Inventory (NFI5), and their uncertainty was assessed. When comparing the uncertainty for different sampling intensities, the one with the grid of 2 km provided more precise information; ranged from 6.6 to 31.3% of the relative standard error for remaining land-use categories for 20 years. On the other hand, land-cover maps by a wall-to-wall approach were produced by using time-series Landsat imageries. Forest land increased from 34,194 ha to 44,154 ha for 20 years, where about 69% of total forest land were remained as forest land and 19% and 8% within forest lands were converted to grassland and cropland, respectively. In the case of grassland, only about 40% of which were remained as grassland and most of the area were converted to forest land and cropland. When comparing land-cover area by land-use categories with land-use statistics, forest areas were underestimated while areas of cropland and grassland were overestimated. In order to analyze land use change, it is necessary to establish a clear and consistent definition on the six land use classification.

• Journal of the Korean Society of Food Culture
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• v.18 no.3
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• pp.270-278
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• 2003

The purposes of this study were to investigate the customers' perception on nutrition information provided on a family restaurant menu, to examine customers' intention to use the nutrition information when eating out if nutrition information would be provided, and to identify what kinds of nutrient information the customers want. A total of 265 respondents were answered. Female was sixty-six percents, and eighty-four percent of the respondents was less than thirty-five years old. The patrons' perception about nutrition information on the menu showed the level of 2.5 points out of 5 points, which pointed out that family restaurant patrons were not satisfied with receiving nutritional information related to the menu. The customers perceived that restaurants had responsibilities for providing nutritional information about menu items. Sixty-six percent of respondents showed a positive intention to the question item about how much the customer would use nutritional information provided on the menu. The customers, who were female (p<0.05), who had a good health status, who showed higher interest on weight control (p<0.01), and who were health-oriented (p<0.01), showed the higher intention to use nutritional information. Nutrient information in which the customers were interested strongly was a fat content, followed by cholesterol content and calorie information. According to the trends of eating out, preferring family restaurants, and increasing interests in a healthful menu, nutrition information demand in restaurant operations would be increased rapidly in the near future. Providing nutrition information at the point of menu choice might result in the improvement of customers' nutritional and health status by encouraging proper dietary habits of patrons as well as providing nutritional education. Therefore, it is recommended that government and restaurant firms should recognize the importance of nutrition information and make strategic plans for the future.

• Journal of the Korean Society for Library and Information Science
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• v.25
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• pp.265-294
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• 1993

At the present. one of the very important functions of the information center or library is to provide information service on time and to the right person. But it is impossible if the shape of the material is not complete. So it is important to keep the material of information complete. This study is on deacidification of paper materials for enhancing useful life of information. This study can be summerized as follews; The material needs deacidification is all of machine-made paper except neutral paper, and hand made paper which are below pH 6.5. The best way for the deacidification for the small amount of materals is to use aqueous deacidifiers such as Calcium Carbonate, Magnesuim Carbonate and Borax. For mass deacidification process, Methoxy Magnesuim Methyle Carbonate and Magnesuim Oxide, called