Applying a connectionist description of feedback timing

This investigation considers the effects of feedback on memory with an emphasis on retention of initial error responses. Based on a connectionist model (Clariana, 1999a), this study hypothesized that delayed-retention memory of initial lesson responses would be greater for delayed feedback compared to immediate feedback, that feedback effects will be greatest with difficult items, and that there would be a disordinal interaction of feedback timing and item difficulty. High school students (n = 52) completed a computer-based lesson with either delayed feedback, single-try immediate feedback, or multiple-try immediate feedback. There was a significant difference for type of feedback, with retention test memory of initial lesson responses greater under delayed feedback than under immediate feedback. Also, instructional feedback effects varied depending on lesson item difficulty. The findings indicate that a connectionist model can explain instructional feedback effects.     

To explore or to exploit? An empirical investigation of acquisitions by large incumbents

Innovation in high technology industries poses considerable challenges, frequently forcing firms to consider using acquisitions as a means of sourcing technology. This paper investigates such behaviour in a major high technology sector, namely the semiconductor industry. The paper focuses on differential effects of technology-related versus nontechnological acquisitions on exploratory and exploitative research and innovation. Most importantly, it confirms the important role of technology-related acquisitions for exploratory innovation.     

金钱的数字化未来

The future of money is increasingly digital,likely virtual,and possibly universal.A globally accepted networkedcurrency would reduce costs and alleviate many prob-lems,such as the money hundering(洗黑钱)that sup-ports terrorists,but there are still many obstacles to sucha system,reports the Organization for Economic Cooperationand Development(OECD).金钱数字化的必要