• Journal of Power System Engineering
• /
• v.19 no.4
• /
• pp.76-81
• /
• 2015

The production of electricity from wind energy is noticed as economic power generation system in the natural resource. Lately, since lots of wind turbine have installed globally, the accidents have increased gradually. In this paper, we classified domestic information for 10 years, information of new energy and industrial technology development organization(NEDO) for 4years and caithness windfarms information forum(CWIF) for 15 years according to part and cause of wind turbine accident. We found that the main causes of accidents are storm, lightening and carelessness. The results of classifying and analyzing the informations, should be used to take measures on the accident prevention of wind turbine.

• Korean Parent-Child Health Journal
• /
• v.14 no.2
• /
• pp.62-68
• /
• 2011

Purpose: This study was performed to investigate contraception knowledge and sexual behavior in female high school students. Methods: The participants were 382 female high school students from one academic and one vocational school. Data was collected from October to November, 2008 using self report questionnaire. Results: Knowledge on contraception was 5.52 in maximum 14 point scale. Major information source for sexual matters was peers such as friends or sisters. Perception on sexual behavior was different according to major information source. Fifty five percents of students thought that kiss can be permitted, and regarded sexual behavior as natural development. 3.4% of participants had experience of sexual intercourse. Conclusion: It is indicated that perception on sexual behavior can be shaped according to correct information and positive attitude on natural sexual development by health profession. Also, education on contraception would be included in sex education to reduce teenage pregnancy.

• The Journal of Society for e-Business Studies
• /
• v.2 no.2
• /
• pp.31-54
• /
• 1997

While Electronic Commerce is believed to provide new opportunities and environments toward the information society, not many companies have achieved successful construction of Electronic Commerce systems regarding their own technology factors and business process types. This work provides a brief review of Electronic Commerce information infrastructure based on the technology architecture developed. Three major technologies-telecommunication, information processing, and process enhancement - support the architecture, and each major technology consists of its technical enablers. Also, the application factors of Electronic Commerce are defined and analyzed in term of inter-enterprise, intra-enterprise, and enterprise-consumer interactivity. Finally, the implementation strategy is drawn with respect to the technology architecture and three application types.

• Management & Information Systems Review
• /
• v.18
• /
• pp.223-251
• /
• 2006

This study examines the factors that have an effect on the satisfaction of student campus life in two college. By the survey questionnaire, three factors selected from 14 questionnaire by factor analysis in the college environmental character. Those factors ware analyzed to estimate the results of this study. And the effect and type of word of mouth communication surveyed by one questionnaire respectively. The major results of this study are as follow; First, the factors that effected on satisfaction of students are the distinction of sex, the division of major field and the distinction of college. But the academic grade factor is not available, Second, the factors of tutors/curriculums and education support service effected on satisfaction of students in campus life, but the factor of education convenience facility is not. Finally, the effect and communication of word of mouth resulted in effectiveness for on satisfaction of students in campus life.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2006.05a
• /
• pp.514-516
• /
• 2006

KORDI(Korea Ocean Research & Development Institute) built a research vessel JANG-MOK with 40 G/T for a survey and observation of oceanographic environmental characteristics at coastal region in September 2005. This paper introduced specification, major loaded instruments, major survey and observation works of JANG-MOK research vessel.

• Korean Journal of Remote Sensing
• /
• v.4 no.1
• /
• pp.49-60
• /
• 1988

Principal Component Analysis (PCA) was applied for regional geological mapping to a multivariate data set of the Landsat TM data in the heavily vegetated and topographically rugged Chungju area. The multivariate data set selection was made by statistical analysis based on the magnitude of regression of squares in multiple regression, and it includes R1/2/R3/4, R2/3, R5/7/R4/3, R1/2, R3/4. R4/3. AND R4/5. As a result of application of PCA, some of later principal components (in this study PC 3 and PC 5) are geologically more significant than earlier major components, PC 1 and PC 2 herein. The earlier two major components which comprise 96% of the total information of the data set, mainly represent reflectance of vegetation and topographic effects, while though the rest represent 3% of the total information which statistically indicates the information unstable, geological significance of PC3 and PC5 in the study implies that application of the technique in more favorable areas should lead to much better results.

• International journal of advanced smart convergence
• /
• v.10 no.4
• /
• pp.22-29
• /
• 2021

For web application vulnerability diagnosis, from the development stage to the operation stage, it is possible to stably operate the web only when there is a policy that is commonly applied to each task through diagnosis of vulnerabilities, removal of vulnerabilities, and rapid recovery from web page damage. KISA presents 28 evaluation items for technical vulnerability analysis of major information and communication infrastructure. In this paper, we diagnose the vulnerabilities in the automobile goods shopping mall website and suggest security measures according to the vulnerabilities. As a result of diagnosing 28 items, major vulnerabilities were found in three items: cross-site scripting, cross-site request tampering, and insufficient session expiration. Cookie values were exposed on the bulletin board, and personal information was exposed in the parameter values related to passwords when personal information was edited. Also, since the session end time is not set, it was confirmed that session reuse is always possible. By suggesting security measures according to these vulnerabilities, the discovered security threats were eliminated, and it was possible to prevent breaches in web applications and secure the stability of web services.

• Journal of the Korea Society of Computer and Information
• /
• v.24 no.9
• /
• pp.77-82
• /
• 2019

Collaborative filtering is a popular technique for recommender systems and used in many practical commercial systems. Its basic principle is select similar neighbors of a current user and from their past preference information on items the system makes recommendations for the current user. One of the major problems inherent in this type of system is data sparsity of ratings. This is mainly caused from the underlying similarity measures which produce neighbors based on the ratings records. This paper handles this problem and suggests a new similarity measure. The proposed method takes users rating patterns into account for computing similarity, without just relying on the commonly rated items as in previous measures. Performance experiments of various existing measures are conducted and their performance is compared in terms of major performance metrics. As a result, the proposed measure reveals better or comparable achievements in all the metrics considered.

• Journal of the Korean Society of Food Culture
• /
• v.33 no.6
• /
• pp.543-549
• /
• 2018

Product replacement (PPL) is used widely in marketing and plays crucial roles but the effects of the PPL attributes on a restaurant brand are not well known. Therefore, this study examined the effects of PPL attributes on brand awareness and brand credibility. In addition, the relationship among brand awareness, brand credibility, and brand loyalty was investigated. The study found that the characteristics of PPL, such as information and entertainment, affected brand awareness. On the other hand, inconvenience did not have any impact on brand awareness. In addition, information, entertainment, and inconvenience affected brand credibility. Furthermore, brand awareness and credibility influenced brand loyalty significantly. These results suggest that PPL can be a very effective way to advertise. Hence, PPL should be done with a sense of information and entertainment than simply with more frequent exposure to consumers, which that might cause inconvenience.

• Journal of information and communication convergence engineering
• /
• v.18 no.4
• /
• pp.207-215
• /
• 2020

Part of speech (POS) tagging is an indispensable part of major NLP models. Its progress can be perceived on number of languages around the globe especially with respect to European languages. But considering Indian Languages, it has not got a major breakthrough due lack of supporting tools and resources. Particularly for Odia language it has not marked its dominancy yet. With a motive to make the language Odia fit into different NLP operations, this paper makes an attempt to develop a POS tagger for the said language on a HMM (Hidden Markov Model) platform. The tagger judiciously considers bigram HMM with dynamic Viterbi algorithm to give an output annotated text with maximum accuracy. The model is experimented on a corpus belonging to tourism domain accounting to a size of approximately 0.2 million tokens. With the proportion of training and testing as 3:1, the proposed model exhibits satisfactory result irrespective of limited training size.