Knowledge Location, Differentiation, Credibility and Coordination in Open Source Software Development Teams

A number of high-quality, large-scale, complex software systems, such as Linux, Apache, and Perl, have been successfully produced through the open source software (OSS) paradigm. This fact suggests that effective knowledge coordination must exist within some OSS teams. However, very few studies have attempted to explicate what these coordination mechanisms are. Therefore, this study examines how knowledge is coordinated between the members of an OSS team from the transactive memory system (TMS) perspective. Specifically, we investigate 1) the relation between TMS and the team members’ knowledge coordination behaviors, and 2) the relation between knowledge coordination and the team’s performance. By surveying 61 OSS project teams, the study validates the important role that TMS plays in OSS developers’ knowledge coordination behaviors, which, in turn, have positive influence on their projects’ technical achievement

Energy Flow Chart-Based Energy Efficiency Analysis of a Range-Extended Electric Bus

This paper puts forward an energy flow chart analysis method for a range-extended electric bus. This method uses dissipation and cycle energy, recycle efficiency, and fuel-traction efficiency as evaluation indexes. In powertrain energy efficiency analysis, the range-extended electric bus is developed by Tsinghua University, the driving cycle based on that of Harbin, a northern Chinese city. The CD-CS and blended methods are applied in energy management strategies. Analysis results show with average daily range of 200 km, auxiliary power of 10 kW, CD-CS strategy, recycle ability and fuel-traction efficiency are higher. The input-recycled efficiency using the blended strategy is 24.73% higher than CD-CS strategy, while the output-recycled efficiency when using the blended strategy is 7.83% lower than CD-CS strategy