Young-Chul Bae

Chaotic Phenomena in Addiction Model for Digital Leisure

Chaotic dynamics have been studied by many researchers in the fields of biology, physics, and engineering. Interest in chaos is also expanding to the social sciences such as politics, economics, and others, including the prediction of societal events. The concept of leisure has developed from a passive concept correlated with relaxation, entertainment, and ideology formation into a positive concept that assumes a more active role. As information and communications technology develops, digital leisure activity is expected to continue spreading. This expansion of digital leisure function correctly, as well as. Traditional leisure activity functions correctly more, whereas digital leisure activity is predicted to function incorrectly more often. In this paper, we propose a mathematical addiction model of digital leisure that deals with its dysfunctions such as addiction to digital leisure, including computer games, internet search, internet chatting, and social media. Herein, to solve addiction to digital leisure, we propose a model derived from a nicotine addiction.

Diagnosis of power supply by analysis of chaotic nonlinear dynamics

In this paper, n order to degrade of diagnosis of power supply by using Poincare map and fractal dimension with temperature measured by infrared camera. we review the characteristic of temperature variation according to pattern variation of power supply in chemical industry complex. As a simulation results we can be realized the characteristic behaviors of nonlinear dynamics in the poincare mal and fractal dimension. In the future verification method requires through additional research.

Chaotic Dynamics in Tobacco`s Addiction Model

Chaotic dynamics is an active area of research in biology, physics, sociology, psychology, physiology, and engineering. This interest in chaos is also expanding to the social scientific fields such as politics, economics, and argument of prediction of societal events. In this paper, we propose a dynamic model for addiction of tobacco. A proposed dynamical model originates from the dynamics of tobacco use, recovery, and relapse. In order to make an addiction model of tobacco, we try to modify and rescale the existing tobacco and Lorenz models. Using these models, we can derive a new tobacco addiction model. Finally, we obtain periodic motion, quasi-periodic motion, quasi-chaotic motion, and chaotic motion from the addiction model of tobacco that we established. We say that periodic motion and quasi-periodic motion are related to the pre-addiction or recovery stage, respectively. Quasi-chaotic and chaotic motion are related to the addiction stage and relapse stage, respectively.

Mathematical Modelling and Chaotic Behavior Analysis of Cyber Addiction

Addiction can be largely divided into two categories. One is called medium addiction in which medium itself causes an addiction. Another is called cause addiction that brings addiction through combination of sensitive self and latent personal action. The medium addiction involves addiction phenomena directly caused by illegal drugs, alcohol and various other chemicals. The cause addiction is dependent on personal sensitivities as a sensitive problem of personal and includes cyber addictions such as shopping, work, game, internet, TV, and gambling. In this paper we propose two-dimensional addiction model that are equivalent to using an R-L-C series circuit of Electrical circuit and a Spring-Damper-mass of mechanical system. We also organize a Duffing equation that is added a nonlinear term in the proposed two-dimensional addiction model. We represent periodic motion and chaotic motion as time series and phase portrait according to parameter’s variation. We confirm that among parameters chaotic motion had addicted state and periodic motion caused by change in control coefficient had pre-addiction state.

Mathematical Modelling of Love and its Nonlinear Analysis

Love which is one of the emotional of mankind, has been studied in sociology and psychology as a matter of grate concern. In this paper We represent romantic behaviors in the love equation of Romeo and Juliet as time series and phase portraits. Also we analyze the behavior’s relation by using time series and phase portraits when external force applied as the third person between Romeo and Juliet 키워드 Love Model, Mathematical Model, Chaos, Random Variable, Time Series, Phase Portrait, Behavior Analysis, Romeo and Juliet 사랑 모델, 수학적 모델, 카오스, 랜덤 변수, 시게열, 위성 공간, 거동 해석, 로미오와 줄리엣 * 제주대학교 통신공학과(soonkim@jejunu.ac.kr) ** 김포대학교 IT학부 멀티미디어학과(ywson@kimpo.ac.kr) *** 교신저자 : 전남대학교 전기.전자통신.컴퓨터 공학부(ycbae@jnu.ac.kr) 접수일자 : 2014. 10. 20 심사(수정)일자 : 2014. 11. 03 게재확정일자 : 2014. 11. 10 I. 서 론 일반적으로 사람은 감정을 가지고 있는 감정의 동물 이라고 말한다. 사람에게 감정이 있다는 말은 즐거움, 노여움, 사랑함, 노는 것 등으로 표현할 수 있는 것이 포함된다. 이중에서도 사랑이란 다른 동물은 가질 수 없는 인간만이 가지고 있는 독특한 감정요소의 하나이 다. 사랑은 좋아하고 아끼는 마음으로 표현하지만 사랑 의 정의는 명확하지 않다. 많은 학자들은 사랑을 생물 학적 측면, 뇌과학적 측면, 생화학적 측면 등 다양한 입 장에서 정의를 내리고 있다. 생물학적 측면에서 배고픔 또는 목마름과 같은 동물적인 욕구의 하나로 본다. 생 화학적인 측면과 뇌과학적 측면에서는 중뇌에서 복측 피개영역과 배쪽창백, 솔개핵 등에서의 뇌의 동작에서 사랑을 규명하려고 한다. 그러나 어느 것 하나도 완벽 하게 사랑이란 무엇인지에 대한 분명한 정의를 내린 철학자나 인문학자는 없다. 대부분 사랑의 정의를 내리 긴 하지만 완벽하게 정의했다고 할 수 없는 상황이다. 따라서 사랑도 감정의 한 영역이라고 볼 때 감정에 대한 수학적 표현에 대한 연구는 중독 모델[1-2], 행복 http://dx.doi.org/10.13067/JKIECS.2014.9.11.1297 JKIECS, vol. 9, no. 11, 1297-1304, 2014 1298 모델[3-5], 사랑 모델[5-6] 등이 연구되었다. 이들 연구 들은 모두 시간 변화량에 대한 지각 등의 변화량을 중 심으로 중독과 행복에 대한 정의를 한 후 이 정의로부 터 2차원의 미분 방정식을 유도하여 이들 거동으로부 터 비선형적인 특성이 있음을 보였다. 사람의 감정이외에 시스템에서 비선형적인 거동에 대한 연구[7-13]는 많이 진행해왔었으나 이는 사람이 아닌 시스템에 대한 것으로 사람의 감정과는 다른 영 역이다, 사람의 감정의 영역의 하나인 사랑에 대한 연 구를 많은 학자들이 진행해 왔다 [5-6]. 특히 수학자들 은 수학적 관점에서 사랑에 대한 정의를 해결하고자 하는 노력을 지속[5-6]하였으며 그 대표적으로 로미오 와 줄리엣의 사랑을 들 수 있다[6]. 이들 로미오와 줄리 엣의 사랑에서는 수학적인 모델을 제시하였으나 명확 하게 이들 사이의 거동 관계를 제시하지 못한 문제점 을 가지고 있다. 본 논문에서는 로미오와 줄리엣의 사랑 방정식[6]에 서 이들의 거동을 시계열과 위상 공간으로 나타내고, 이들 사이에 외부적인 자극인 3자가 개입했을 때의 관 계를 시계열과 위상 공간으로 나타내어 이들 사이의 거동 관계를 분석한다.

Secure Communication using Embedding Drive Synchronization

In this paper, We introduce an embedding driven synchronization method using SC-CNN(State-Controlled Cellular Neural Network) which has the purpose to secure communication method through the embedding driven synchronization method in the SC-CNN. we proposed new embedding driven synchronization that this method is only using one state variable compare to the general driven synchronization methods which is using all state variables. In this paper, We achieved the usage of embedding driven synchronization and we also applied it to secure communication.

Synchronization of Dynamical Happiness Model

Chaotic dynamics is an active research area in fields such as biology, physics, sociology, psychology, physiology, and engineering. Interest in chaos is also expanding to the social sciences, such as politics, economics, and societal events prediction. Most people pursue happiness, both spiritual and physical in many cases. However, happiness is not easy to define, because people differ in how they perceive it. Happiness can exist in mind and body. Therefore, we need to be happy in both simultaneously to achieve optimal happiness. To do this, we need to synchronize mind and body. In this paper, we propose a chaotic synchronization method in a mathematical model of happiness organized by a second-order ordinary differential equation with external force. This proposed mathematical happiness equation is similar to Duffing’s equation, because it is derived from that equation. We introduce synchronization method from our mathematical happiness model by using the derived Duffing equation. To achieve chaotic synchronization between the human mind and body, we apply an idea of mind/body unity originating in Oriental philosophy. Of many chaotic synchronization methods, we use only coupled synchronization, because this method is closest to representing mind/body unity. Typically, coupled synchronization can be applied only to non-autonomous systems, such as a modified Duffing system. We represent the result of synchronization using a differential time series mind/body model.

Real-time EtherCAT Master Implementation on Xenomai for a Robot System

This paper describes a real-time EtherCAT Master library. The library is developed using Xenomai. Xenomai is a real-time development framework. It cooperates with the Linux kernel, in order to provide a pervasive, interface-agnostic, hard real-time support to user-space applications, seamlessly integrated into the GNU/Linux environment. The proposed master library implements EtherCAT protocol for master side, and supports Application Programming Interfaces(APIs) for programming of real-time application which controls EtherCAT slave.

Behavior Analysis of Dynamic Love Model with Time Delay

Love which is one of the emotional of mankind, has been studied in sociology and psychology as a matter of grate concern. In this paper we represent romantic behaviors in the love equation of Romeo and Juliet as time series and phase portraits in the case of with and without time delay. And we also analyze their difference.

Pemphigus foliaceus induced by an angiotensin II receptor blocker

A 76‐year‐old Korean woman presented with pruritic erythematous vesicles and crusted plaques over her entire body. She had been taking an angiotensin II receptor blocker (ARB) (candesartan) for 2 months before developing the skin lesions. The patients was diagnosed with pemphigus foliaceus based on the clinical and immunopathological criteria, including intra‐epidermal bulla on skin histopathology, intercellular deposit of C3 and IgG on direct immunofluorescence, and autoantibodies to the 160‐kDa antigen on both immunoblot and ELISA. The medication was changed to another antihypertensive agent and the patient was treated with prednisolone for 2 months. The vesiculobullous skin lesions gradually disappeared. However, the skin lesions reappeared 2 months after starting a different ARB (telmisartan). This case illustrates the importance of taking a complete drug history in patients who present with bullous diseases. Furthermore, ARBs should be added to the list of nonthiol drugs that can possibly induce pemphigus.