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Scientific reports v.6, 2016년, pp.37961 -    SCI SCIE
본 등재정보는 저널의 등재정보를 참고하여 보여주는 베타서비스로 정확한 논문의 등재여부는 등재기관에 확인하시기 바랍니다.

A social contagious model of the obesity epidemic

Huang, He (School of Management and Economics, Beijing Institute of Technology, Beijing 100081, China ) ; Yan, Zhijun (School of Management and Economics, Beijing Institute of Technology, Beijing 100081, China ) ; Chen, Yahong (School of Management and Economics, Beijing Institute of Technology, Beijing 100081, China ) ; Liu, Fangyan (School of Management and Economics, Beijing Institute of Technology, Beijing 100081, China ) ;
  • 초록  

    Obesity has been recognized as a global epidemic by WHO, followed by many empirical evidences to prove its infectiousness. However, the inter-person spreading dynamics of obesity are seldom studied. A distinguishing feature of the obesity epidemic is that it is driven by a social contagion process which cannot be perfectly described by the infectious disease models. In this paper, we propose a novel belief decision model based on the famous Dempster-Shafer theory of evidence to model obesity epidemic as the competing spread of two obesity-related behaviors: physical inactivity and physical activity. The transition of health states is described by an SIS model. Results reveal the existence of obesity epidemic threshold, above which obesity is quickly eradicated. When increasing the fading level of information spread, enlarging the clustering of initial obese seeds, or introducing small-world characteristics into the network topology, the threshold is easily met. Social discrimination against the obese people plays completely different roles in two cases: on one hand, when obesity cannot be eradicated, social discrimination can reduce the number of obese people; on the other hand, when obesity is eradicable, social discrimination may instead cause it breaking out.


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