• Title, Summary, Keyword: convergence theory

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A framework of Multi Linear Regression based on Fuzzy Theory and Situation Awareness and its application to Beach Risk Assessment

  • Shin, Gun-Yoon;Hong, Sung-Sam;Kim, Dong-Wook;Hwang, Cheol-Hun;Han, Myung-Mook;Kim, Hwayoung;Kim, Young jae
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.14 no.7
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    • pp.3039-3056
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    • 2020
  • Beaches have many risk factors that cause various accidents, such as drifting and drowning, these accidents have many risk factors. To analyze them, in this paper, we identify beach risk factors, and define the criteria and correlation for each risk factor. Then, we generate new risk factors based on Fuzzy theory, and define Situation Awareness for each time. Finally, we propose a beach risk assessment and prediction model based on linear regression using the calculated risk result and pre-defined risk factors. We use national public data of the Korea Meteorological Administration (KMA), and the Korea Hydrographic and Oceanographic Agency (KHOA). The results of the experiment showed the prediction accuracy of beach risk to be 0.90%, and the prediction accuracy of drifting and drowning accidents to be 0.89% and 0.86%, respectively. Also, through factor correlation analysis and risk factor assessment, the influence of each of the factors on beach risk can be confirmed. In conclusion, we confirmed that our proposed model can assess and predict beach risks.

A Study on the Analysis of Consumer Convergence Preferences for Healthcare Information Service in Social Media (소셜미디어 건강정보서비스에 대한 융합적 소비자선호도 분석방법 연구)

  • Kim, Kyoung-Hwan
    • Journal of the Korea Convergence Society
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    • v.7 no.5
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    • pp.181-188
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    • 2016
  • This study investigated consumer convergence preferences for healthcare information service in social media using the multi-attribute utility theory. The multi-attribute utility theory is an approach for compositional modeling attributes wherein researchers compute the overall service utility by aggregating the evaluation results for attribute values. We found that healthcare information service consumers in social media evaluate the service preference through the multi attributes - Update, Cost, Usefulness, Usability, Reliability. And the study shows that individual preference by estimating weight of each attribute in the services influences the service use intention. So we believe that estimating preferences with multi-attribute utility theory will predict business success of the services in a new media, and for a successful business of the social media services marketers should assess the consumer's preference using the multi-attributes.

Oriental and Western Convergence Study and Alimentotherapy Application of Yulmubokyeoljuk (율무복령죽의 동·서 융합적 섭취효능 및 식이요법 활용에 관한 연구)

  • Park, Sung-Hye;Park, Hae-Ryoung
    • Journal of Digital Convergence
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    • v.15 no.3
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    • pp.385-391
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    • 2017
  • The purpose of this study is to understand the food and nutritional value of based on the oriental Qi-flvor theory and to convergence understanding of dietary effects. In this study, dietary effect of Yulmubokyeoljuk based on oriental theory and analyzed the contents of general composition and minerals. We recognize the value as a food that can be used for therapy of Yulmubokyeoljuk. Phosphorus content was high and high calory foods. In addition, by discharging stagnant water in the spleen, excessive wetness is removed and the function of transportation of the spleen is strengthened. The results of this study suggest that it provided the basis of the characteristics of food and the necessity of convergence approach to dietary efficacy based on the traditional Qi-flvor theory and nutrional composition.

The Effect of u-convergence Information System on Flow Theory and Tourist Satisfaction, Reuse Intention -Focusing on Flow Theory- (플로우 이론을 적용한 u-융합정보시스템이 관광객의 만족도와 재사용의도에 미치는 영향 -플로우 이론을 중심으로-)

  • Sun, Su-Kyun;Kim, Jong-In;Ko, Sun-Young
    • Journal of Digital Convergence
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    • v.19 no.1
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    • pp.389-399
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    • 2021
  • The research background of this paper is because the u-convergence information system applying flow theory lacks the measurement of tourist satisfaction. The purpose and research method of this study are as follows. The first is the suggestion of flow relation information display format algorithm. Second, by combining this algorithm and flow theory, a pattern algorithm was created according to the content information quality and the personality type of tourists. The expected effect of this study is to derive the success factors of the u-convergence information system by generating a pattern algorithm according to the flow relationship information display format and the tourist's personality type. The limitations of this paper are limited to one area, and objectivity is poor due to the lack of data and small area. In the future, it is necessary to evaluate the effectiveness through analysis after applying the method presented to other tourist destinations. Future tasks will need to be supplemented with data from expert groups and objectivity in various regions.

Chaos-Theoretical Approach to Media Convergence on Internet Media (인터넷미디어 중심의 매체융합 현상에 대한 카오스 이론적 접근)

  • Lee, Keun-Yong
    • Korean journal of communication and information
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    • v.19
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    • pp.185-211
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    • 2002
  • Media convergence is prevalent all over the world, and is expected to change our lives dramatically in near future. Chaos theory is a new emerging theoretical approach to various social phenomena including organization management, economic system, stock market fluctuation, and so on. This thesis is intended to explain media convergence phenomena centered on internet media using basic concepts of chaos theory such as self-organization, co-evolution, and feedback loop. The implications of this tentative study are that we can apply chaos theory to media convergence as other social or natural phenomena, and that maintaining chaos state of media system is useful for accelerating creativities, and that developing media system as an organic system to cooperate with other relevant systems is helpful for promoting life qualities, and that establishing moral order or root value is desirable for implementing communicatopia.

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Political Economy in the Age of Broadcast and Telecommunications Convergence: An Introductory Inquiry for Critical Succession (방송통신 융합 시대의 정치경제학: 비판적 계승을 위한 시론적 탐색)

  • Lee, Nam-Pyo;Kim, Jae-Young
    • Korean journal of communication and information
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    • v.33
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    • pp.193-225
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    • 2006
  • This study attempts to reconsider the significance of political economy as a theory of knowledge and/or a method for explaining the convergence of broadcast and telecommunications. It is going to suggest what the domains of political economy should be in the future by both highlighting the characteristics and blind spots of previous studies and drawing some distinctive features of a new media environment. The principals and recent research trends in political economy are reviewed in order to make clear that the historical totality as a meta-framework of political economy needs to be reexamined in the era of convergence. Although the scope of political economy has been limited to criticize the structure of media ownerships, the study emphasizes the importance of media consumer theory. It also discusses the problems of free market theory, distortion of active media audience theory, and limitations and creative tension of audience commodity. Finally, this study stresses the significance of audience-oriented policies in order to make approach to practical sides of media politics.

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A Study of Oriental Medicinal Convergence Approach for Natural Seasoning (Several Sesame Seeds) (천연조미료(깨류)의 동양의학적 융합접근방법 고찰)

  • Min, Young-Sil
    • Journal of Convergence for Information Technology
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    • v.9 no.8
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    • pp.164-169
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    • 2019
  • This study was examined that natural seasoning is related to health care and disease prevention through oriental medicinal theory. A typical oriental medicinal theory is the princeple of win-win cooperation between Yin-Yang and Five elements, the old belief is that our body moves in harmony with Yin-Yang and Five elements. From the records traditional books and papers, we would look at the affinity and nutritional relationship between Five taste(Sweet, Salt, Sour, Bitter, Heat and Spicy) and the body with "Sesame" Therefore, several type of Sesame which is represented by natural seasoning, through intake of Five taste because of body affinity, is expected to prolong health life span.

A Study on the Numerical Approach for Industrial Life Cycle: Empirical Evidence from Korea

  • LEE, Kangsun;CHOI, Kyujin;CHO, Daemyeong
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.5
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    • pp.667-678
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    • 2021
  • The industrial life cycle theory was extended to the product life cycle theory and the corporate life cycle theory, but a conceptual life cycle was presented, and quantitative empirical evidence for this was insufficient. It is intended to improve appropriate resource planning and resource allocation by quantitatively predicting the industrial cycle and its position (age) in the cycle. Human resources, tangible assets, and industrial output analysis were conducted based on 28 years of actual data of 39 industries in Korea by applying the Gompertz model, which is a population ecology prediction model. By predicting with the Gompertz model, the coefficient of determination R2 value was 97% or more, confirming the high suitability with the actual cumulative sales value of the industry. A numerical model for calculating the life cycle of each industry, calculating the saturation of input resources for each industry, and diagnosing the financial stability of the industry was presented. These results will contribute to the decision-making of industrial policy officers for budget planning appropriately for each stage of industry development. Future research will apply the numerical model of this study to foreign national industries, complete an inter-industry convergence diagnostic model (e.g. ease of convergence, suitability of convergence, etc.) for renewal of fading industries.

Multilevel acceleration of scattering-source iterations with application to electron transport

  • Drumm, Clif;Fan, Wesley
    • Nuclear Engineering and Technology
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    • v.49 no.6
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    • pp.1114-1124
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    • 2017
  • Acceleration/preconditioning strategies available in the SCEPTRE radiation transport code are described. A flexible transport synthetic acceleration (TSA) algorithm that uses a low-order discrete-ordinates ($S_N$) or spherical-harmonics ($P_N$) solve to accelerate convergence of a high-order $S_N$ source-iteration (SI) solve is described. Convergence of the low-order solves can be further accelerated by applying off-the-shelf incomplete-factorization or algebraic-multigrid methods. Also available is an algorithm that uses a generalized minimum residual (GMRES) iterative method rather than SI for convergence, using a parallel sweep-based solver to build up a Krylov subspace. TSA has been applied as a preconditioner to accelerate the convergence of the GMRES iterations. The methods are applied to several problems involving electron transport and problems with artificial cross sections with large scattering ratios. These methods were compared and evaluated by considering material discontinuities and scattering anisotropy. Observed accelerations obtained are highly problem dependent, but speedup factors around 10 have been observed in typical applications.

Analysis of the maintenance margin level in the KOSPI200 futures market (KOSPI200 선물 유지증거금률에 대한 실증연구)

  • Kim, Joon;Kim, Young-Sik
    • Journal of the Korean Society of Industry Convergence
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    • v.8 no.2
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    • pp.85-95
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    • 2005
  • The margin level in the futures market platys an important role in balancing the default probability with the investor's opportunity cost. In this paper, we investigate whether the movement of KOSPI200 futures daily prices can be modeled with the extreme value theory. Based on this investigation, we examine the validity of the margin level set by the extreme value theory. Moreover, we propose an expected profit-maximization model for securities companies. In this model, the extreme value theory is used for cost estimation, and a regression analysis is used for revenue calculation. Computational results are presented to compare the extreme value distribution with the empirical distribution of margin violation in KOSPI200 and to examine the suitability of the expected profit-maximization model.

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