• Journal of Korean Society of Industrial and Systems Engineering
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• v.33 no.4
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• pp.178-186
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• 2010

Business models of e-commerce which have been successfully applied in a developed society do not always guarantee success in other environments where the degree of IT availability differs. This is due to the difference of culture, systems and technological basis among the countries. This study aimed to compare e-commerce system acceptance in countries with different environments and to identify the determining factors for the acceptance of e-commerce. The result shows that, in order to make e-commerce easily accepted in countries with different IT environments, factors such as trust, reputation and usefulness should be addressed more sincerely in the business strategy.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.48-49
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• 2008

설비고장의 불확실성을 고려하여 송전계통의 공급신뢰도 특성을 명확하게 나타낼 수 있는 곡선을 제안하였다. 송전계통의 공급신뢰도 특성곡선은 송전계통에서 $T_{Total}$ 기간동안 발생한 공급지장 유발고장의 수나 각각의 경우에 대한 공급지장전력, 고장지속시간 등 설비고장의 불확실성에 상관없이 공급지장전력, 고장지속시간, 공급지장에너지간의 관계를 $y=ax^{-1}$ 형태의 곡선으로 나타낸 것이다. 송전계통의 공급신뢰도 특성곡선은 계통규모(년도별, 국가별)에 상관없이 동일한 모양을 가지게 되는데, Energy Impact of Reliability(EIR) 등을 확률론적 공급신뢰도 기준으로 사용함으로써 동등한 조건에서 계통규모 및 신뢰도 수준을 절대적으로 비교할 수 있는 신뢰도 지표로 활용할 수 있다.

• Journal of the KSME
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• v.25 no.4
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• pp.266-273
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• 1985

자동차공업의 미래를 점치는 전문가들은 1980 후반에서 1990년대에 제 4세대의 자동차공업의 핵심은 한국, 멕시코, 브라질을 중심으로 한 저생산요소 요인이 있는 국가에서 생산이 중점적으로 된다는 전망과 유동제조시스템(FMS)을 활용한 지역적으로 안분된 생산체제로 새로운 형태의 경쟁협력 관계가 발생하리라는 예측이 엇갈린다. 유동제조시스템에서 주요역할을 하는 부분은 생산순서를 결정하는 이론인데 현재의 저산기의 논리는 인간의 두뇌에 비교하면 아직 매우 단 순하고 원시적인 편이다. 현재 많은 노력이 경주되는 인공두뇌(artifical intellegence: Al)에 관한 연구에 많은 진전이 있다고 하더라도 당분간은 인간의 두뇌가 기계의 지능보다 월등한 부문이 있는 반면 인간이 활동하기 불편한 작업환경이 있다든가 단순 작업이 되어 인간에 지루함을 주는 일들이 있어 인간과 기계의 적절한 배분으로 적극 기계를 이용하는 자동화도 필요하지만 동시에 인간의 창의적인 능력을 활용하는 것도 매우 필요하다. 우리나라에서 자동차공업이 국제적으로 발전한다면 이는 한국적인 여건에 부합하는 창의적인 인간활동에 의한 것이지 값싼 노임 때문 만은 아닐 것이다.

• Asia pacific journal of information systems
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• v.11 no.2
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• pp.1-21
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• 2001

The unprecedented growth of Internet technologies has made resources on the World-Wide-Web(WWW) instantly accessible to various user communities. While e-commerce has become as an important issue with the growth of the Internet, there are insufficient empirical research efforts concerning its status in Korea. The United States, in contrast, has made significant efforts in making empirical research regarding this issue. In this paper, we demonstrate not only how these contextual differences influence consumer satisfaction with the purchased products/services, but also what contextual constructs make consumers satisfied or dissatisfied. In addition, we tried to find the difference in the factors of consumer satisfaction between a developed country(i.e., United States) and a developing country(i.e., Korea) with regard to e-commerce. The study findings suggest that contextual problems need to be solved before e-commerce provides real benefits for consumers and businesses.

• Proceedings of the Korea Concrete Institute Conference
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• 2006.11a
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• pp.921-924
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• 2006

현재 국내에서는 기존에 사용되었던 안정성 위주인 사양중심의 설계(prescriptive code)에서 구조물의 성능을 고려하여, 인명피해 뿐 아니라 구조물의 기능도 설계의 감안요소로 하는 성능 기반 설계기준(Performance-based design)이 도입되고 있는 추세이다. 본 연구에서는 일본 토목학회(JSCE), 캘리포니아 도로연방국(Caltrans), 유럽코드(Eurocode 8), 뉴질랜드 교량설계(NZ code)에서 어떤 식으로 성능기반 설계기준을 제시하고 있으며, 각 국가 간의 성능(performance)과 레벨(performance level)에 대한 접근 방식을 비교하고 국내의 성능기반 설계 도입의 필요성에 대해 논하는데 그 목적이 있다.

• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.12
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• pp.1772-1783
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• 2007

This study aimed to investigate differences in the purchasing patterns of and the levels of satisfaction with cosmetic products, and the method of disposing dissatisfied cosmetics for female university students among China, Japan and Korea. Survey was conducted with 1,200 female coeducational university students in Beijing, Tokyo and Seoul and 1,115 were used for the data analysis. Data were analysed by frequency analysis, Cronbach's ${\alpha}$, chi-square analysis, analysis of variance, Duncan's Multiple Range test. The results showed significant differences in purchasing behaviors in China, Japan and Korea. Japanese students mainly got information through objective sources, while Koreans did so through human network. Regrading the evaluative criteria for basic care items, function and effect were the most important criteria for Chinese and Korean consumers and skin compatibility for Japanese. For color make-up, Chinese, Japanese and Korean respondents respectively cared the most on brand image, convenience of purchase and the current trend. Chinese tended to shop cosmetics at department stores due to store reputation, Japanese preferred supermarkets and pharmacies and Koreans shopped at discount stores for low price. The most influential human sources were friends and colleagues for Chinese and Korean, and models on advertisements and magazines for Japanese. Korean respondents displayed the highest level of satisfaction with cosmetics followed by Japanese and Chinese. As for the methods of disposing dissatisfactory cosmetics, Chinese were the most active in exchanging for other product; Japanese and Korean were not likely to use or throw the products away.

• The Journal of Bigdata
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• v.6 no.2
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• pp.39-49
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• 2021

Recently, large and diverse weather data are being collected by sensors from various sources. Efforts to predict the concentration of fine dust through machine learning are being made everywhere, and this study intends to compare PM10 and PM2.5 prediction models using data from 840 outdoor air meters installed throughout the city. Information can be provided in real time by predicting the concentration of fine dust after 5 minutes, and can be the basis for model development after 10 minutes, 30 minutes, and 1 hour. Data preprocessing was performed, such as noise removal and missing value replacement, and a derived variable that considers temporal and spatial variables was created. The parameters of the model were selected through the response surface method. XGBoost, Random Forest, and Deep Learning (Multilayer Perceptron) are used as predictive models to check the difference between fine dust concentration and predicted values, and to compare the performance between models.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.9
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• pp.5968-5981
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• 2015

In Korean companies, traditional collectivism have been merged into individualism caused by meritocracy. In order to better understanding about change of cultural characteristics, we examine the relationship between collectivism / individualism and person-environment fit. The data was obtained from 203 employees working in 5 Korean company and 173 employees in 4 companies in China. Results confirmed that collectivism increases employee's person-environment fit (person-organization, person-supervisor, person-coworker) and further leads to high levels of affective organizational commitment. The moderating roles that individualism play upon the relationships between collectivism and person-environment fit (person-organization, person-supervisor, person-coworker) were also investigated. Results confirmed that individualism enhance the impact collectivism has upon person-environment fit. In addition, this study found the significantly difference between Korea and China in effect of collectivism on person-environment fit. Lastly, the study also has explored theoretical and practical implications and the limitations of this research as well as the future directions of research.

• Journal of the Korean Geographical Society
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• v.47 no.6
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• pp.899-920
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• 2012

The purpose of this study is to examine and better understand student's perception of territory in the deterritorialized world. Students' sketch maps were analyzed to investigate the way of which they recognized the form of national territory, border, geographic location, and neighboring countries. In addition, students' values, attitudes, and affection for their homeland and other countries were observed through the awareness of North Korea, DMZ, and Dok-do island. Scrutinizing students' sketch maps and follow-up interviews provided much more in-depth context for understanding students' narratives about territorial identity than did the analysis of structured surveys since they can freely draw and sketch their cognition. A qualitative data analysis builded a code list with 67 codes generated from 626 quotations. These data were exported to CSV format to elicit and evaluate differential variances of territorial identity along with student's Social Studies score and Grade Point Average for inferential statistics and quantitative data analysis using SPSS. Based on the results of data analysis and discussion, some suggestions to build a model of territorial education and to develop teaching and learning materials in the domain of geography education were provided.

• Journal of Educational Research in Mathematics
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• v.16 no.3
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• pp.199-220
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• 2006

One of the main objectives of National Assessment of Educational Achievement (NAEA), which is implemented by Korea Institute of Curriculum and Evaluation(KICE), is to manage the qualities of National Curriculum. Thus we considered NAEA as the research for educational program assessment and tried to find out how to make NAEA better for achieving that objective. For the purpose of this paper we analyzed the present conditions of NAEA into four perspectives. And then according to each perspective we explored schemes for improving NAEA. In conclusion, we proposed the following; Firstly, in relation to assessing students' understanding of the mathematics contents, the meanings of Achievement Levels have to become much more clear and concrete. in relation to assessing for comparing student' understanding according to mathermatics content areas, the number of items has to be increased for elevating validities of NAEA. Thirdly, in relation to gathering the information about properties which are shown by the students in particular Achievement, it is necessary to think about how to produce items for the purpose in the step of developing items in NAEA. Finally in relation to collecting the data which can be useful for relevance of mathematics contents, it is necessary to make a special group of items for identifying relevance of mathematics contents, and to apply performance assessments on part of the students, not whole students.