TiCl4, ammonia, inorganic salts as raw material, nanometer composite-crystal TiO2 powders were synthesized by two-step chemical method. Precursors were crystallized with different phase and stable composite-crystal TiO2 with anatase and rutile phase was prepared at low temperature. Quantitative control of crystal phase was realized. Remarkable factors includ...

In this report, a composite control scheme for the control of robot manipulators is proposed. Due to the modeling error or environmental uncertainties, robot motion may present a significant positioning error by using a conventional Computer-Torque Method. To improve tracking capability of robot manipulators, sliding mode control and nonlinear control algorithms have been introduced, but comput...

Composite applications rely on further sub-applications – also called sub-activities in the following – to implement their functionality. There are numerous examples including quite simple Web applications as well as large scale enterprise resource planning (ERP) systems that interact with database backends. Also, business processes that are realized as Web service workflows represent complex c...

An intrusion detection ensemble, i.e. a set of diverse intrusion detection algorithms employed as a group, has been shown to outperform each one those diverse algorithms employed individually. Moving along this line, we have devised an intrusion detection ensemble that inspects network packets that flow across the process control network of a digitally controlled physical system such as a power...

We present a methodology for the active control of time-harmonic wave fields, e.g., acoustic disturbances, in composite regions. This methodology extends our previous approach developed for the case of arcwise connected regions. The overall objective is to eliminate the effect of all outside field sources on a given domain of interest, i.e., to shield this domain. In this context, active shield...

objective: reinforcement with fiber is an effective method for considerable improvement in flexural properties of indirect composite resin restorations. the aim of this in-vitro study was to compare the transverse strength of composite resin bars reinforced with preimpregnated and non-impregnated fibers. materials and methods: thirty six bar type composite resin specimens (3×2×25 mm) were const...

background: microleakage is still one of the defects of resin composites that can lead to treatment failure; and re-bonding technique is one of the effective ways to reduce it. this study evaluated the effect of re-bonding with a surface sealant or a dentin adhesive on microleakage in class v microhybrid, nanohybrid, and packable composite restorations. materials and methods: in this in vitro s...

We present a simple approach for implementing flexible locking strategies in a system of components, which may themselves be composite objects. The approach is flexible in that a developer can defer the distribution of locks in the system until deployment: the choice of lock type and granularity may therefore depend on the operating environment. We only consider exclusion control; this includes...

In this paper, we analyze overload control for composite web services in service oriented architectures by an orchestrating broker, and propose two practical access control rules which effectively mitigate the effects of severe overloads at some web services in the composite service. These two rules aim to keep overall web service performance (in terms of end-to-end response time) and availabil...

A robust nonlinear composite adaptive control algorithm is done for a 6-DOF quadrotor system. The system is considered to suffer from the presence of parametric uncertainty and noise signal. The under-actuated system is split to two subsystems using dynamic inversion. A sliding mode control is controlling the internal dynamics while the adaptive control is controlling the fully actuated subsyst...