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.
Mobile social networks have gained tremendous popularity among hundreds of millions of Internet users due to their fast information spreading and strong inter-person influence. However, the high complexity of social interactions and the intrinsic dynamics of mobile social networks make it challenging to model the spreading mechanism delicately and enable precise prediction of information diffusion...
The Mobile Parallel Robot (MPR) is a new type of robot which integrates the mechanical characteristics of Mobile Robot and Parallel Robot. It can adjust position and orientation to suit to many special situations. This paper firstly analyzes the kinematics characteristics of MPR, including the inverse kinematics and the forward kinematics using analytic method. A motion simulation based on COSMOSMotion...
A key advantage of a Service Delivery Platform (SDP) is to enable service providers to develop and deliver services more rapidly. Most of the papers that have been written describe the elements in SDP from a features and functionality viewpoint. In this paper, we illustrate a framework and methodology to examine the SDP deployment architecture from a performance viewpoint, and describe the steps in...
In this paper a class of mobile parallel robots with the structural configuration of PPUU (Prismatic-Prismatic- Universal-Universal) is investigated in detail. Firstly a singularity analysis corresponding to different configured cases of the revolute axes of the robot's U-joint based on the screw theory is developed and a brief comparison of the four cases is carried out. Of all four configuration...
In this paper, a mechanism type synthesis is carried out for a class of mobile parallel robots (MPR) based on a systematic enumeration method, and the feasible configurations for the MPR are obtained. Then the inverse kinematics for the two typical mechanisms of PPRS and PPSR are derived. By a numerical approach, the workspace reachable in the Z-direction and the orientation workspace are obtained...
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.