this paper presents a new observer-based control scheme for a class of nonlinear systems. in the proposed method, nonlinear observer and twisting algorithm controller are employed to realize a sensor-less control strategy for complex systems which makes use of non measurable process information instead of installing as many sensors as possible. due to lack of availability of the complex system ...

One specific type of service innovation of particular interest to IT and business professionals is IT-Enabled Services (IES). Previous studies have suggested many roles for IT in service innovations. IT has proven a useful tool in service innovation. IT is an important component of most services in many industries, including healthcare, financial services, engineering, and management consulting...

We discuss models and data of crowd disasters, crime, terrorism, war and disease spreading to show that conventional recipes, such as deterrence strategies, are not effective and sufficient to contain them. The failure of many conventional approaches results from their neglection of feedback loops, instabilities and/or cascade effects, due to which equilibrium models do often not provide a good...

Inequalities in the social determinants of health (SDH), which drive avoidable health disparities between different individuals or groups, is a major concern for a number of international organisations, including the World Health Organization (WHO). Despite this, the pathways to changing inequalities in the SDH remain elusive. The methodologies and concepts within system science are now viewed ...

Verification is the process of assessing how well a system meets a specification or requirement. A variety of approaches have appeared in the literature, ranging from model checking to static analysis of source code and theorem proving. In this working group, we primarily focused on verification based on model checking [2, 13], in which a state-based description of the system is assessed with r...

Context-aware Systems (CASs) are becoming increasingly popular and can be found in the areas of wearable computing, mobile computing, robotics, adaptive and intelligent user interfaces. Sensors are the corner stone of context capturing however, sensed context data are commonly prone to imperfection due to the technical limitations of sensors, their availability, dysfunction, and highly dynamic ...