In this paper we report results of applying the quantitative target approximation model (qTA)  to simulate function-specific F0 contours in Mandarin. The qTA model is based on a set of assumptions about the biophysical and neural control mechanisms of pitch production. To simulate F0 contours for tone and focus, we extracted qTA parameters that are… (More)
This article describes a method of an off-line signature recognition by using parameterize Hough transform. From human nature, signatures are performed very fast by the person, and hence have a lot of straight-line segments within them. The faster that a person signs their name, the more straight lines will be present in their signature. To detect the… (More)
Our current understanding of how emotions are expressed in speech is still very limited. Part of the difficulty has been the lack of understanding of the underlying mechanisms. Here we report the findings of a somewhat unconventional investigation of emotional speech. Instead of looking for direct acoustic correlates of multiple emotions, we tested a… (More)
During the interaction of a collaborative learning team, students usually participate in a variety of roles such as leader, follower and isolator, etc. These roles should be recognized and monitored carefully, especially the team leader, so that the collaboration might be engineered and supported appropriately. Identifying emergent leadership roles in a… (More)
This paper proposes combining the buyer coalition strategy, called Group Compromised Price, with bundle search strategy to obtain the greater discounts from forming a coalition that gives the number of buyers as large as possible.