BACKGROUND There has been increasing focus on the importance of national policy to address population levels of physical inactivity. Components of a comprehensive national physical activity policy framework include: 1) national recommendations on physical activity levels; 2) setting population goals and targets; 3) surveillance or health monitoring systems; and 4) public education. The aim of t...

Das, Kant and Zhang have done a brilliant job editing Securing Cyber-Physical Critical Infrastructure, bringing together a who’s who list of researchers and practitioners. Das is a University distinguished Scholar Professor of Computer Science and Engineering at the University of Texas Arlington with more than 500 published papers, three books and the editorship at Elsevier’s Pervasive and Mobi...

Editorial Assessment of diet and physical activity: new tools; old challenges Special issue on methodology The assessment of diet and physical activity in populations is central to research and practice of public health nutrition. Choosing the best method for each study and setting requires both technical experience and up-to-date knowledge. With the explosive growth of information technology, ...

Even with optimal medical management using drugs or neurosurgery, patients with Parkinson's disease (PD) are faced with progressively increasing mobility problems. For this reason, many patients require additional physical therapy. Here, we review the professional evolution and scientific validation of physical therapy in PD, and highlight several future challenges. To gain insight in ongoing, ...

Substantial technological and engineering advances in various disciplines make it possible more than ever before to provide autonomous control choices for cars, trains, and aircraft. Correct automatic control can improve overall safety tremendously. Yet, ensuring a safe operation of those control assistants under all circumstances requires analysis techniques that are prepared for the rising co...

High transmission rate and secure communication have been identified as the key targets that need to be effectively addressed by fifth generation (5G) wireless systems. In this context, the concept of physical-layer security becomes attractive, as it can establish perfect security using only the characteristics of wireless medium. Nonetheless, to further increase the spectral efficiency, an eme...

Cyber physical systems(CPS) include a lot of high complexity computing such as physical aspect modeling, dynamic analysis and verification of continuous dynamic property, analysis and verification of real-time property, analysis and verification of spatial property, scheduling and non-functional requirements. The correctness of computing results of cyber physical systems not only meets the time...

This commentary is the concluding piece of a series of papers about the Canadian ParticipACTION initiative. It describes the resurgence of the new ParticipACTION as a national communications initiative in Canada, and sets this in an international context. The set of ParticipACTION papers in this issue establish benchmarks and provide baseline and initial impact data for the evaluation and monit...

A New Calculus. We need a mathematics that merges the cyber and physical worlds at a fundamental level. While the nascent field of hybrid systems deals with systems that have both discrete and continuous components, its limitations are that the constituent continuous models are still based on a notion of globally shared time. However, in highly interconnected cyber-physical systems, components ...