• 한국항행학회논문지
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• 제13권5호
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• pp.691-698
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• 2009

Chen 등은 위조 방지와 프라이버시 보호를 위한 RFID 인증 프로토콜을 제안하였다. 제안된 스킴은 저비용의 RFID 태그 보안을 위하여 XOR 연산과 시프트(shift) 연산을 이용하였다. 그러나, 실제적인 응용 환경을 고려하지 않았기 때문에 보안상의 문제점을 비롯하여 몇 가지 취약점을 보인다. 본 논문에서는 Chen 등의 프로토콜을 분석하고 취약점에 대한 의견을 제시한다. 또한, 기존의 스킴을 보완한 RFID 양방향 인증 프로토콜과 효율적인 공급망 관리를 위한 갱신 프로토콜을 제안한다. 제안된 프로토콜은 기존의 XOR 연산 기반의 RFID 인증 프로토콜과 안전성 및 효율성면에서 비교, 분석하였으며, 높은 안전성과 적은 통신 비용이 요구됨을 확인하였다.

• 수산해양교육연구
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• 제23권2호
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• pp.198-209
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• 2011

The purpose of this study was to test effects of traditional play based physical activity program on social competence. To obtain this purpose, the following research hypotheses were established. First, experimental group will show higher level of social activity than control group. Second, experimental group will show higher level of stability than control group. Third, experimental group will show higher level of cooperation than control group. Fourth, experimental group will show higher level of hypersensitiveness than control group. Forty eight four year children participated in this study. Iowa Social Competency Scale(Preschool Form) was used to measure children's social competence. Collected data were analyzed using t-test and analysis of covariance. The results of this study showed that program was effective in improving children's socal competence. These results were discussed in relation to previous study. Finally research questions for future study were suggested with comment on limitations of this study.

• Journal of Information Technology Applications and Management
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• 제16권4호
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• pp.93-107
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• 2009

This study investigated consumer preferences for Internet medical information service in China using the multi-attribute utility theory. The multi-attribute utility theory is a compositional approach for modeling consumer preferences wherein researchers calculate the overall service utility by summing up the evaluation results for each attribute. We found that Chinese Internet medical information users consider the availability of information and quick response to be the most important attributes. Further, they think that the comment feature is less important as compared to other attributes such as costs and updates. In addition, we found that the Internet users having more Internet experience consider these attributes to be more important as compared to the people who are just beginning to surf the Internet. For any successful Internet business, Internet marketers should assess individual-level preference and accordingly organize a fresh campaign. As of now, Internet marketers need estimation methods to predict the market performance of new services in many different business environments. We believe that the multi-attribute utility theory is a useful approach in this regard.

• 디지털콘텐츠학회 논문지
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• 제19권8호
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• pp.1489-1497
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• 2018

온라인 뉴스에 개인의 참여가 활성화되면서 댓글의 중요성은 더욱 커지고 있다. 특히 이용자들에게 많은 공감을 받는 '베스트 댓글'은 주된 여론으로 인식되고 큰 영향력을 가진다. 따라서 본 연구는 온라인 뉴스 댓글 데이터를 이용하여 베스트 댓글의 특성을 알아보고자 하였다. 이를 위해 일반 댓글과 차이점을 보일 가능성이 있는 요소를 설정 후, 데이터를 수치화하여 일반 댓글과 베스트 댓글의 차이를 분석하였다. 본 연구는 최근 댓글 조작 등의 문제 해결에 실마리를 제공하고 개인 및 학술단체, 정부기관 등을 주체로 하여금 기초 자료로 활용될 것으로 기대된다.

• 유통과학연구
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• 제13권4호
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• pp.9-19
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• 2015

Purpose - This study focuses on the use of evaluative criteria software for imprecise market information, and product mapping relationships between design parameters and customer requirements. Research design, data, and methodology - This study involved using the product predicted value method, synthesizing design alternatives through a morphological analysis and plan, realizing the synthesis in multi-criteria decision-making (MCDM), and using its searching software capacity to obtain optimal solutions. Results - The establishment of product designs conforms to the customer demand, and promotes the optimization of several designs. In this study, the construction level analytic method and the simple multi attribute comment, or the quantity analytic method are used. Conclusions - This study provides a solution for enterprise products' multi-goals decision-making, because the product design lacks determinism, complexity, risk, conflict, and so on. In addition, the changeable factor renders the entire decision-making process more difficult. It uses Fuzzy deduction and the correlation technology for appraising the feasible method and multi-goals decision-making, to solve situations of the products' multi-goals and limited resources, and assigns resources for the best product design.

• 한국생활과학회지
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• 제19권5호
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• pp.795-803
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• 2010

This study sought to determine the mediating effect of followership in the relationship between the leadership of child care center director and empowerment as perceived by child care teachers. Data were collected from 294 child care teachers in child care centers located in four cities labeled A, B and C through a structured questionnaire. To describe data the Pearson's correlation coefficient and multiple regression analysis were computed. The level of child care center director's leadership which child care teacher perceived was 3.64 points in a scale of 5 points, child care teacher's empowerment was 3.50 points in a scale of 5 points and followership was 3.30 points in a scale of 5 points. COMMENT A positive correlations were found between leadership, empowerment and followership. Followership was shown to be a mediating variable between child care teachers' perceptions of leadership and empowerment. Furthermore, results also showed a strong relationship between the leadership of child-care center director and the child-care teachers' followership and empowerment, thus implying that the child-care teachers' followership is very important to increase the empowerment.

• 대한수학교육학회지:학교수학
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• 제4권2호
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• pp.247-260
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• 2002

In recent elementary school mathematics a word 'stipulation' newly appears. The word is used instead of definition. However, there seems to be some differences between definition and stipulation. So, in this paper we investigate those differences through the concept 'function of definition'. In school mathematics textbooks there are definitions which carry out special functions In mathematical contexts or situations. We can say that we understand those definitions, only if we also understand the functions of definitions in those contexts or situations. Functions of definition are classified as, stipulation-function, discrimination-function, analysis-function, demonstration-function, improvement-function. With these analyses we made a frame for investigating the characteristics of the definitions in recent elementary school mathematics textbooks. As a result of analysing functions of definition we found that generally speaking, stipulation-function is excessively emphasized and the other functions of definition are not explained adequately in school mathematics textbooks. So it is required that the textbook authors should be careful not to miss an opportunity for the functional understanding and the mathematics teachers should be aware of the functions of definitions. Finally, we comment that textbook author, teacher, and researcher should be careful in using the word 'stipulation' instead of definition, because, although there are various functions of definitions, students might ream only stipulation-function.

• 복식문화연구
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• 제23권3호
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• pp.498-511
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• 2015

This paper examines advertising images of fashion brands in vertical social network site (SNS) from the viewpoints of message strategies. Vertical social network sites are types of social curation systems applied to social networking, where information is selected, organized, and maintained. Fashion brands communicate with consumers by presenting images on vertical SNSs, anticipating improvements in brand image, popularity, and loyalty. Those images portray content for particular brands and seasonal concepts, thus creating paths for product sales information. Marketing via SNSs corresponds to relationship marketing, which refers to long-term interrelationship and value augmentation between the company and consumer, and viral advertising, which relies on word of mouth distribution via social network platforms. Taylor's six-segment message strategy wheel, often used for analyzing viral ads, was applied to conduct a content analysis of the images. A total of 2,656 images of fashion brands advertised on Instagram were selected and analyzed. Results indicated that brand values were somewhat related to the number of followers. Follower rankings and comment rankings were also correlated. In general, fashion brands projected sensory messages most often. Acute need and rational messages were less common than other messages. Sports brands and luxury brands presented sensory messages, whereas fast fashion brands projected routine images most often. Fashion brands promoted on vertical SNSs should portray advertising images that combine message strategies

• 음성과학
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• 제12권4호
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• pp.129-139
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• 2005

This paper investigates any possible correlation between the information structure and the occurrence of clause internal pauses in the spontaneous discourse. One of the possible functions of pause is its capacity to signal the information structure of the discourse. However, this aspect was not much explored in Korean spontaneous speech. In the present study, information structure of spontaneous speech was defined for each word or word group on the basis of the information structure analysis model proposed by Van Donzel (1999) and Roulet (1991, 1997). Thus, at a local level (words or word groups) of discourse structure, a distinction was made between three types of information, new, given and inferable. The results showed that clause internal pauses tend to appear more frequently before new information than other types of information. However compared to the total number of words or word groups it was not noticed any specific ordering concerning different kind of information status and pausing. It was however found that clause internal pauses did not appear randomly. The majority of them occurred at the initial part of the clause or the sentence. This tendency was mostly related to the division of sentence (or clause) into topic and comment. Thus, the role of pauses as a marker of information structure seems to be less effective in spontaneous discourse.

• 동아시아식생활학회지
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• 제18권5호
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• pp.684-691
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• 2008

The purpose of this study was to analyse the recognition and preference level associated with the preservation of Korean traditional health food. Self-administered questionnaires were collected from 289 individuals. The data was statistically analysed using I-test as well as the one-way analysis of variance (ANOVA). We studied whether or not respondents had the constitutional cuisine before Ed-comments : Please complete the sentence. Before what?. Twenty-two kinds of Korean traditional foods were randomly selected based on old cookbooks, and then recognition and preference of Korea traditional constitutional cuisine were asked. The tasting experience in the constitutional cuisine affected recognition and preference significantly. The coefficients of recognition and preference were the highest in Junbokjoog ($4.20{\pm}1.00$), Yookgejang ($4.18{\pm}1.03$), Jangagui ($4.05{\pm}1.17$), Origui ($3.97{\pm}1.19$) and Samgeitang ($3.94{\pm}1.15$). Ed-comment : Please check if this value is correct. There are two decimal points. Bosintang ($1.81{\pm}1.60$) showed a low preference compared to high recognition, and was therefore considered to be enthusiasts' cuisine only. It is believed that promoting the greater awareness of Korean traditional constitutional cuisine through the mass media would result in a higher recognition and preference of the same.