William Wang

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The causes of performance changes in a distributed system often elude even its developers. This paper develops a new technique for gaining insight into such changes: comparing request flows from two executions (e.g., of two system versions or time periods). Building on end-to-end request-flow tracing within and across components, algorithms are described(More)
The causes of performance changes in a distributed system often elude even its developers. This paper develops a new technique for gaining insight into such changes: comparing system behaviours from two executions (e.g., of two system versions or time periods). Building on end-to-end request flow tracing within and across components, algorithms are(More)
Injured skeletal muscle has the capacity to regenerate through a highly coordinated sequence of events that involves both myoblast migration and differentiation into myofibers. Fibrosis may impede muscle regeneration by posing as a mechanical barrier to cell migration and fusion, providing inappropriate signals for cell differentiation, and limiting(More)
Article history: Received 15 August 2011 Received in revised form 6 October 2011 Accepted 25 October 2011 Available online 15 December 2011 0026-2714/$ see front matter 2011 Published by doi:10.1016/j.microrel.2011.10.026 ⇑ Corresponding author at: Biosensor Group, Biom Center, Chang Gung University, 259 Wen-Hwa 1st Roa Taiwan. Tel.: +886 3 2118800x5786.(More)
This article proposes an adaptive neuro-fuzzy inference system (ANFIS) for solving navigation problems of an autonomous ground vehicle (AGV). The system consists of four ANFIS controllers; two of which are used for regulating both the left and right angular velocities of the AGV in order to reach the target position; and other two ANFIS controllers are used(More)
An optimal control technique is proposed to address the problem of path tracking of an autonomous ground vehicle. This technique utilizes a Fractional Order Proportional Integral Derivative (FOPID) controller to control a non-holonomic autonomous ground vehicle to track the behaviour of the predefined reference path. Two FOPID controllers are designed to(More)
While the emerging cloud computing systems promise infrastructure resources to support application scalability, there are publications of systematic evaluation of this emerging information technology infrastructure in general, and no obvious publications for some representative collaboration applications in particular. We describe a methodology to study the(More)
High-throughput screening (HTS) of large-scale ribonucleic acid interference (RNAi) libraries has been widely used in functional genomics in recent years. The Z-factor and strictly standardized mean difference (SSMD) have already become two popular methods for quality control (QC) in HTS experiments. This paper is intended to put forward a robust parameter,(More)
In recent years intelligent soft computing technique such as fuzzy inference system (FIS) is proven to be an efficient and suitable when applied to variety of systems. In this paper, we intend to formulate two fuzzy inference systems; sensors based navigation technique for an autonomous vehicle in cluttered dynamic environment. The first FIS controller(More)