The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents a general framework of physics-inspired method named artificial physics optimization (APO) Algorithm, a population-based, stochastic for multidimensional search and optimization. APO invokes a gravitational metaphor in which the force of gravity may be attractive or repulsive, the aggregate effect of which is to move particles toward local and global optima. APO's particles (solutions...
Services participating in the composition are usually co-ordinated according to a workflow, composed by several activities, each of which carried out by a service. The binding of services to workflow activities may be affected by several parameters (e.g., QoS, price, reputation, etc.). In this paper, we propose a service binding driven by a further important requirement, that is, the incompatibilities...
Society has grown increasingly reliant on technologies that allow the reproduction of both physical and abstract entities. The ease with which content can be copied has brought widespread benefits, however in many cases these benefits are also contingent on a suitable counter balance of content protection, allowing the process of copying to be restricted in certain circumstances. Dissemination of...
Navigation with wireless sensor networks (WSNs) can help people escape safely from an emergency. Previous navigation algorithms attempt to find safe and efficient escape paths for individuals under various environmental dynamics but ignore possible congestion caused by the individuals rushing for the exits. Moreover, all the previous works have overlooked the fact that the emergency rescue force can...
The pantograph device must exert enough upward force to maintain sliding contact with the catenary at all times to avoid loss of contact due to excessive transient motion. This paper presented a global-oriented particle swarm optimization (GPSO) technique with Cauchy mutation for tuning the optimal control gains of PID controller in a high-speed rail pantograph device with notch filter. The proposed...
Atomic force microscopy lithography has been widely used for creating oxide patterns at the nanoscale on a number of different material surfaces. In this work we investigate the formation of uniform oxide lines and layers obtained by assembling arrays of overlapped oxide dots and lines, respectively. Simulations and experiments are conducted in order to assess the uniformity and consistency of the...
This paper attempts to design a power assist system for maneuvering heavy objects in industries based on human operator's perception of object weight. The perceived weight of an object maneuvered with a power assist system is always very much less than the actual weight of the object. But, the human operator cannot differentiate between the perceived weight and the actual weight and eventually applies...
This paper describes an effective way to estimate state variables, such as motor speed and disturbance from visual signal by using a dual sampling rate observer. The dual sampling rate observer estimates the state variables at every DSP control period and corrects the estimation error at the instant that the measurement signal is detected. The effectiveness of the observer is verified through simulations...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.