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Grey Wolf Optimizer (GWO) is a new meta-heuristic optimization. It is inspired by the unique predator strategy and organization system of grey wolves. Since the GWO algorithm is easy to fall into local optimum especially when it is used in the high-dimensional data, an improved GWO algorithm combined with Cuckoo Search (CS) is proposed in this paper. By introducing the global-search ability of CS...
It is found that adding a constraint linear motion on the surface normal vector of current workpiece point can make robot set up an adaptive machining method. In this way, a constraint motion according with a machining process is realized in the finite space. The scientific problems are how to quantitatively describe the law of the special motion and simplify the multi-coupling relationship caused...
Software Defined Networking is a novel network architecture, which separates data and control plane by OpenFlow. The feature of centralized control to acquire and allocate of global network resource. So, the link load-balancing of SDN is not as difficult as the traditional network. This paper proposes a link load-balancing algorithm based on Ant Colony Optimization(LLBACO). The algorithm uses the...
In this paper, a parasitic extraction method of PIN diode is proposed based on analyzing the ringing signal in Switch Mode Power Supply (SMPS). As the charge-discharge of filter capacitor and parasitic parameters of PIN diode, ringing occurs in filter circuit of a simple SMPS. Relationship between characteristic parameters of ringing in time/frequency domain and parasitic parameters of PIN diode is...
Blind people need guide tools to help them walk safely. The traditional guide tool is a guide rod. However, the guide rods always have shortages. With the development of technology, the electronic guide instrument for blind people has been designed. In this paper, infrared sensors are used to detect road information, and the information is analyzed by recognition algorithm. Then the electronic device...
In this paper the reliability indices, especially steady-state ones of the two correlated units redundant system with two types of failure were discussed. By using another method which is different from traditional Laplace transform, the explicit formulas on the steady-state availability and steady-state failure frequency of the system were derived. Moreover, some numerical simulation results were...
Delay mismatch between the input and output signals of power amplifiers (PAs) may lead to an erroneous assumption of memory effects. In adaptive digital predistortion (DPD) system, the delay mismatch affects the accuracy of coefficients estimation and degrades performance of the DPD system. In this paper, we reveal the impact of fractional delay mismatch, and analyze the relationship between delay...
The determination of aerosol's effect contains much uncertainty. During quantification of aerosols via remote sensing, surface reflectance error of 0.01 could bring Aerosol Optical Depth (AOD) error of 0.1. In order to avoid this, simultaneous retrieval of AOD and surface properties would be a promising method. In this paper, we present a novel analytic solution to atmospheric radiative transfer equation...
Acetoin (3-hydroxy-2-butanone) is an important flavor compound, widely existing in dairy products and some fruits. An study has been performed on acetoin production Bacillus subtilis TH-49. The mutant was obtained by treating B. subtilis NT-50-44 with compound mutation and subjecting it to a shake flask fermentation selection procedure. It was proved that the main metabolite produced by mutant strain...
Since the stopped buses at bus station, there occurs the potential effect of capacity of adjacent lane. With the combination of the related results of traffic flow theory and queuing theory, the qualitative and quantitative analysis were worked out separately. Based on the effect time of bus stop on capacity of adjacent lane, the effect time model of bus station was established and then two capacity...
Software architecture has emerged as an important sub-discipline of software engineering. This paper proposes a novel software architecture testing technology using pi calculus. pi calculus is of rigorous mathematical foundation and well-defined semantics. Petri net provides a graphical description technique that is easy to understand and carry on analysis. We make pi calculus combined with Petri...
Parabolic Radon transform (PRT) is one of the most effective methods to eliminate multiple. Based on model study and programming, the article shows the physical signification of FPRT firstly, then presents the theories and implementation processes about the forward and inverse parabolic Radon transform infrequency domain. It also discusses the aliasing in radon domain, the stability of radon transform,...
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