By means of studying project management body of knowledge and analyzing characteristics of R&D enterprise project management, the differences between R&D enterprise project management and the current construction project management in management content, process and methods are explored, the view that R&D project management process consists of knowledge innovation and knowledge management is emphasized, and then knowledge management in R&D project management is discussed, knowledge management methods in R&D enterprise project are studied, and the view that creating standardized processes and technical documentation templates, establishing knowledge management information system and constructing a knowledge sharing culture are efficient ways to solve knowledge management is put forwarded. Furthermore, in conjunction with the practice of R&D enterprise information system, the view that knowledge management-based project management system is an effective approach is confirmed.

In view of the National Undergraduate Baja Contest, an initial model is established for the reducer. According to the calculated force of the transmission part, the reinforcing ribs of the bearing hole are optimized and the initial model is optimized and checked several times using the topology optimization module of ANSYS. The safe and reliable housing model with a weight reduction of 35.82% makes full use of the material properties, thus contributing to lightweight of the whole vehicle under the premise of sufficient strength.

The growing emergence of a variety of network applications have stringent Quality of Service (QoS) requirements which cannot be always met by the best-effort Internet. To provide QoS ,several QoS frameworks have been explored over last two decades, but none of them has been truly successful and globally implemented. This paper proposes QOF, a novel QoS framework based on the OpenFlow. It uses the superior control capabilities of OpenFlow network to transmit business having QoS requirements. On receiving QoS requirements of an application, QOF employs network status information provided by the measurement system (bandwidth, delay, packet loss),then uses QoS routing algorithm implemented by path computation module to guarantee QoS. Finally, QOF is simulated and verified, simulation results show that QOF can find a path satisfying QoS requirements of application according to network status information, and can improve resource usage .

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