No abstract

No abstract

The performance of the real-time dynamic force and torque compensation, flexible force interactive control, and the ability to compensate for the defect of the passive rehabilitation training are the important functions within the rehabilitation robot design process. In this investigation, the upper limb rehabilitation robot is designed, and the force sensor is used to measure the joint feedback torque with high precision, high sensitivity, and low cost. In the rehabilitation robot design process, the human–machine adaptability and lightweight flexible driving design are considered, and the static and dynamic moment detection performances of the driving joint are analyzed. Furthermore, the impedance control algorithm is used to control the force output of the single drive joint, and then the sinusoidal force output performance and step force output performance are tested under different amplitudes and frequencies. Finally, the passive rehabilitation mode of the prototype is tested to evaluate the performance of the rehabilitation robot. The results show that the force output accuracy and stability of the driving joint has a good performance, which can satisfy the force-assisted application of exoskeleton.

Wiki is a collaborative authoring system for collective intelligence which is quickly gaining popularity in content publication. In software development communities, especially open source and global software development teams, wiki is already widely used for documentation and coordination purpose but not programming purpose. This paper presents a new programming approach based on wiki technology by which developers are able to experience "writing wiki page is wring source code". Moreover, developers are able to compile, execute and debug programs in wiki pages too. A prototype of such on-line collaborative software development environment, Galaxy Wiki, is developed in this environment iteratively in order to prove the concept.

Sufficient conditions have been provided for the emergence and development of us media due to the mature of network technology. Frequently, incidents of online vicious rumors take places in we-media environment with features of linkage anonymity, immediacy and convenience both online and offline, along with the wide-spread influences and severe harm. Nowadays, Internet rumors have become not only a major issue which needs to be paid great attention to in the field of information dissemination, but also a key factor affecting China's social stability and economic development. It's urgent to study the spreading mechanism of Internet rumors and to control it. Keywords: we-media, Internet rumors, propagation mechanismsMedia is used by ordinary people who want to share his or her experiences and ideas on BBS forum, SNS social networks, micro-blog, we-chat, instant messaging and so on. They are the era of media of our own voices instead of traditional and intermediate media. The production right, editing, and communicating of information will be handed to all Internet users, everyone owns the media, everyone is a communication subject, and also the audience. People attract concerns from the upper class by communicating and interaction with governments, news agencies, opinion leaders and so on through these media facilities.