Message from general co-chairs and program co-chairs

published_or_final_versionThe 4th International Joint Conference on Computational Sciences and Optimization (CSO 2011) Kunming and Lijiang, Yunnan Province, China, April 15-19, 2011. In Proceedings of the Computational Sciences and Optimization, 2011, p. 28-30

THE KINEAMTIC ANALYSIS OF THREE TAEKWONDO KICKING MOVEMENTS

The purpose of this study was to compare and describe the kinematic characteristics of the lower limb joints of three kicking movements in Taekwondo. Five elite female athletes served as subjects in this study. Two Peak high-speed cameras (120Hz) were synchronized to record three kicking movements. The maximum foot velocity duration of movement and the minimum knee angle in these three kicking movements have significant differences. Back round-kick and Back-kick are not whip-like movements. As for the curve of foot velocity, there is twin peak in Back round-kick. It is also notably different from the other kicking movements

A Network Stability Monitoring Mechanism of Cluster-Oriented Wireless Sensor Network

In wireless sensor network (WSN), every sensor node could active dynamically. Therefore, those sensor nodes will affect the stability of network topology because of clustering and de-clustering, and continuously make reconfiguration for the clusters of wireless sensor network, all that will influence the overall function of network. It is an important issue that how to elect a cluster manager (CM) to keep the stability of network topology. In addition, large amount of events maybe flood suddenly in a local area. Such the case might raise the overload of CM, even lead CM to fail or crash and the WSN topology maybe self-organized. However, a mechanism needs to be considered that allows coping with the additional loads and can balance the workload of CM. In this study, a preventable and supportable monitor mechanism to avoid CM overload cause network unstable and to reduce load imbalance problem is proposed. Hence, it can prolong lifetime of network and raise performance of network efficiently

Encouraging IS developers to learn business skills: an examination of the MARS model

Though prior research has recognized business skills as one of the keys to successful information system development, few studies have investigated the determinants of an IS developer’s behavioral intention to learn such skills. Based on the Motivation–Ability–Role Perception–Situational factors (i.e., the MARS model), this study argues that the intention of IS developers to acquire business skills is influenced by learning motivation (M), learning self-efficacy (A), change agent role perception (R), and situational support (S). Data collected from 254 IS developers are analyzed using the Partial Least Squares (PLS) technique. Results show that a developer’s intention to learn business skills is positively influenced by intrinsic learning motivation and both absolute and relative learning self-efficacy. Furthermore, in comparison to two other change agent roles, the advocate role leads to a significantly higher level of learning intention. Finally, work and non-work support positively influence both extrinsic and intrinsic learning motivation. Notably, non-work support has a greater impact on both absolute and relative learning self-efficacy. Our results suggest several theoretical and practical implications