• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.367-368
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• 2008

CAS(conditional Access System) is required for contents access such that only paid subscribers can watch channels in broadcast systems. In this paper, we design the CI(Common-Interface) module and implement a Multicrypt one of DVB scenario for interoperability. we use PADS2005 CAD tool for design and integrate the developed CAS into a STB(Set-Top-Box) on PCB board.

• Asia pacific journal of information systems
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• v.13 no.2
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• pp.87-104
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• 2003

Though much attention has been paid to offer various multimedia services by many online service providers, the study on consumer behavior of online information service users are yet to be further explored in various aspects. This study develops a mathematical model for analyzing online consumer's usage patterns, contrasted to the existing media selection theory and flow concept about usage behavior of information services. We demonstrated using some case examples that online information consumption can be viewed not only as a cognitive behavior interacting with online media, but also as an economically rational behavior depending on consumer's perceived cost and time spending. The results obtained in this paper will surely serve as a theoretical foundation for justifying the consumer's behavior and WTP (willingness to pay) for various online contents consumption empirically.

• Journal of Korean Elementary Science Education
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• v.25 no.2
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• pp.191-205
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• 2006

The purpose of this study was to explore strategies used by pre-service elementary science teachers in planning a science lesson. The participants were six senior students from a national university of education located in the midwestern area of Korea. Data regarding their planning strategies were gathered through both thinking-aloud and observation. Research findings suggest that: three of the teachers had little understanding of the necessity of reviewing unit contents or prior learning for planning a science lesson; five student teachers relied heavily on learning objectives presented in teachers' guidebooks without considering their appropriateness; all teachers exhibited an intention of composing different activities or teaching approaches from teachers' guidebooks; only two teachers thought about learners' prior knowledge or understanding levels; five and three teachers had poor understanding of discovery learning models and importance of teacher's questioning, respectively; and five teachers paid little attention to assessment.

• Proceedings of the Korea Concrete Institute Conference
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• 1990.10a
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• pp.175-178
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• 1990

Recently, a growing attention is paid to development of new construction materials. The fiber reinforced Concrete is recognized as one of the most promising new construction materials. A comprehensive experimental study was conducted to explore the mechanical behavior of steel fiber reinforced concrete. The major variables in the experiment were the fiber contents and the lengths of steel fibers. The flexural, tensile, and compressive behavior of steel fiber reinforced concrete were investigated. The present study shows that the strength and ductility are remarkably increased with the increase of fiber content. The rate of strength increase due to steel fibers was found to be the highest in tension, the middle in flexure and the lowest in compression. This indicates that the steel fibers play a major role in increasing the tensile capacity.

• Journal of the Korean Home Economics Association
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• v.17 no.2
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• pp.10-29
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• 1979

Nowadays various organizations, such as hospitals, workers, students and families are requesting a model sample of standardized Korean meal plan to meet their nutritional requirement with daily food intake. Practical application of nutritional requirement in Korean meal is not yet established. This mainly comes form the lack of the research works on experimental cookery for the right amount of recipes of Korean meal , and no effect was ever paid for this angle by many specialist. Therefore, it is urgent to research and construct the standardized meal plan for Korean people. Contents of the present research are as follows ; 1) Standardization of recipes and the amounts : Various kinds of daily foods were selected for the purpose of recipes. The standardization of the recipes and the right amount were continuously attempted. 2) Research on the construction of nutritional meal plan : The method of constructing harmonious meal plan based upon the requirement, were studied. And the meal plans were constructed according to the different units of ages. Special meal plans were also constructed for the pregnant women and lactating women. 3) Evaluation for the nutritional adequacy were followed after the setting the various recipes.

• The Journal of the Korea Contents Association
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• v.13 no.1
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• pp.175-185
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• 2013

The judgement which is subject of research has denied legal rescission of division of the inherited property by agreement based on (1) the fact that the division of inherited property terminated at the time of concluding mutual agreement in its nature while only the relationship of claim and obligation between the inheritor who has paid for such obligation and the inheritor who has acquired such obligation in the mutual agreement remains (2) and the fact that the legal stability is considerably hindered as the re-partition of inherited property having retroactive effect becomes unavoidable in case of approving the legal rescission of the division of the inherited property by agreement. But it is reasonable to also approve legal rescission on the division of the inherited property by agreement in case the division by agreement actually has the nature such as conditional donation between joint heirs (1) from the fact that the division of the inherited property by agreement gets the nature of disposal equivalent to exchange, transfer and abandonment of share between joint heirs in actuality, (2) and the fact that there are no other theories in approving the validity of mutually agreed rescission despite the fact that the re-partition of inherited property having retroactive effect is unavoidable even in case of the mutually agreed rescission of the division by agreement among all joint heirs. However, as the division of the inherited property by agreement is a contract that gets concluded only if all joint heirs participate, even the legal rescission for the reason of not fulfilling the obligations paid by one party of the heirs during the division by agreement must be considered as possible only by expression of intentions from all other joint heirs excluding this one party.

• Journal of Digital Contents Society
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• v.19 no.1
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• pp.93-102
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• 2018

This study aims to present policy implications by analyzing information security behavior factors of internet users. The research model, based on PMT and UTAUT2, consists of perceived threat, severity, social influence, self-efficacy, experience and habits, PC and privacy behaviors, security behaviors on new services and set demographic characteristics, use places of internet, use of paid products, and experiences of accident as moderate variables to analyze the effect on security behavior. The results showed that perceived severity, self-efficacy significantly influenced on experience and habits, and experience and habits and self-efficacy had a high influence on PC and privacy behavior. Also, PC and privacy behaviors have a high impact on security behavior of new services. Age, income, use of paid products, and experience of accidents have a moderating effects on security behaviors. The results of this study are expected to help policy decision making to improve the level of information security of internet users.

• The Journal of the Korea Contents Association
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• v.21 no.12
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• pp.238-249
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• 2021

This research aims to present effective influencer marketing strategies against a heavy blow in Korean influencer marketing industry because of the paid advertisement controversy and the reinforcement of regulations for online advertisement. By investigating the effects of influencer reputation, which is composed of communication skills, influence, authenticity and professionalism on marketing effect, as well as the mediating effect of parasocial relationship, the study provides some implications for influencer selecting. The effect of economic interests is examined under 4 experimental conditions of paid advertisements, brand collaboration, brand gifts and organic review to figure out how to arrange an appropriate sponsorship plan. According to results of PLS structural equation analysis, it shows that the influence and authenticity of an influencer have a significant positive effect on marketing effect and the mediating effect of parasocial relationship is partially proved. It seems that the effect of influencer reputation on marketing effect is significantly differentiated in different contexts, which confirms the moderating effect of economic interest. Distinguish from previous studies, this study focuses on types of economic interest rather than a simple comparison between sponsorship disclosure versus no disclosure and makes contributions to expanding reputation research. Meanwhile, findings of this study could give some practical implications for marketing practitioners in planning influencer marketing.

• The Journal of the Korea Contents Association
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• v.13 no.3
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• pp.511-519
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• 2013

The purpose of this paper is to examine how European textbooks reflect Seoul nowadays. The study focuses on the trend of textbooks in main European countries, such as England, France, Spain, Italy, and Germany. They tend to describe Seoul as one of the mega cities with urban problems, and introduces the city as an economic center which is responsible for interaction with other mega cities. Besides, Seoul is also described as less competitive city compared to others, and its history and cultural resources are not paid attention. Despite everything, it is fortunate that there are very few errors in descriptions of Seoul. In future I expect that descriptions of Seoul in European textbooks are enhanced in not only economic aspects of Seoul but also historic and cultural aspects of Seoul and then European textbooks get more reliable contents to inform Korea.

• Journal of The Korean Association For Science Education
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• v.10 no.1
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• pp.17-31
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• 1990

The purpose of this study is to make a comparative analysis of the educational bojective, organization, contents, teaching and evaluation of the biological curriculum in high school of Korea and the United States. The results are summarized as follows: 1. In case of the educational objectives, both Korea and the United States emphasize the importance of the process of inquiry, experimentation and observation. Particularily, great emphasis is placed upon the human centered curriculum by reinforcing the relationships between the nature and human being. 2. In regard to the educational organization, eleven credit units(Science I: 5 credits, Biology: 6 credits) is allocated in Korea, and ten credit unit, in the United States. Both of Korea and United Stats designate the biology as elective course. But the science I course is designated as required in Korea 3. This study have been analyzed the educational contents of the two countries within the framwork of the basic concepts and essential informations contained in the curriculum. Results of the analysis as follow: The educational contents have less quantity and lower level in Korea than in the United States. And interrelations among the other curricula are not well considered in the curriculum of Korea/ On the other hands, interrelations among the oter curricula are fully considered and the purpose for emphasizing the importance of the process of inquiry course is well considered in the United States. The themes are stressed on "Structure and Function" (34.5%), "Genetic continuty" (21.3%), "Diversity and Unit" (14.2%) and "Regulation and Homeostasis" (10.3%) in Korea, and in the United States "Structure and Function" (27.3%), "Diversity and Unity" (25.6%), "Genetic continuty" (17.9%) and "Organism and Environment" (9.3%). 4. Regarding the educational guidance, both of Korea and the United States emphasis the interrelation of the basic concepts and principles within the total framwork. Also observation and experimentation, safety education, interest of students, life dignity, pretection of nature, social biology are reguired being paid special attentions. 5. In case of evaluation, both of Korea and the United States are the same in all of methods of evaluation. But the United States is grest stressed on reading and writing.