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Internet use has seriously affected individual health in potential and subtle ways. Past research on the subject mainly concentrated on the mental health caused by addictive use, e.g., impulse control disorders and obsessive-compulsive disorder. With the constant development of cyber technology, Internet has been an indispensable element of living and working, which can provide more convenient and efficient support and help. At the same time, the effects of Internet use more than Internet addiction on individual health cannot be ignored in living and working. This paper aims to identify the most common physical complaints associated with Internet use, and further investigate the association between the frequency of Internet use and individual physical health. Five hundred and thirteen participants completed the questionnaires by online or offline manner, which covers demographic questions and questions concerning Internet use and physical complaints. The most common complaints were involving dry eyes, decreased vision, and cervical pain. The positive pearson correlation coefficient were found between the level of physical complaints and the frequency of Internet use, place of residence and education. Especially, the higher amount of time for the Internet use is strongly associated with a higher level of physical complaints.

Smart worlds begin with smart things, such as smart objects, smart cities, smart manufacturing, and smart systems, are overlaid with sensing and actuation, many embedded in things, and eventually encompass all aspects of the cyber, physical, social, and thinking hyperspace. In the future, human beings will live in a smart environment where both life and work are well addressed by technology, whereas humans will be responsible only for providing creativity. For this purpose, we have organized the first 2015 Smart World Congress, including five IEEE International Conferences. Specifically, a variety of challenges are presented in the field of smart world. Therefore, an open forum on the top ten challenges (Top10Cs) for smart worlds was held under the congress to identify the main challenges through collecting the intelligence existing particularly in crowd wisdom. Top10Cs and related works, as a crowdsourcing approach, discuss and analyze the top challenges for smart worlds based on the selective results of the crowd and experts via an online platform. Moreover, we summarize the experiences obtained in organizing the Top10Cs forum.