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To improve the adaptability and stability of Dijkstra algorithm for solving routing problem of service composition, a method to solve routing problem of service composition based on an improved ant colony algorithm is proposed. Firstly, based on the traditional ant colony algorithm, the constraints of it are improved. Secondly, a problem solving model for improved ant colony algorithm is established,...
In ongoing efforts to reduce the congestion of the airspace and the cost of company, optimization stands as a fundamental research problem. This paper proposes a new method by establishing a SIMMOD simulate model and a controller workload objective function to address the dynamic slot-route assignment problem of the air traffic. Genetic Algorithms was used that offers a dynamic optimization required...
The vehicle control system based on Network communication becomes increasingly complicated recently. The traditional research only focuses on the improvement of network communication quality or system control performance. The network configuration had been carried out to study the vehicle chassis integrated control system. Based on the MATLAB/Simulink and TrueTime Toolbox, the distributed CAN network...
Blasting action plays a very important role in slope stability and the effect of rock fragmentation in stonework cutting excavation. Based on engineering practices, this paper applies dynamic finite element method and conducts a numerical simulation of the cutting excavation process. It have conducted researches on the stress field inside rocks in millisecond delay blasting, Von-Mises and other domino...
This paper studies the Shanghai Stock Exchange (SSE) Composite Index, sample period of which spreads from December 16th 1996 to December 31st 2009. The index close prices, its logarithm, its logarithmic first differences, and its log linear detrended series are used. To judge the existence of chaotic dynamical features in time series, the technique of phase space reconstruction is applied. The C-C...
Computational Grid is a distributed computing paradigm that provides huge computational power for the large scale distributed application. One of the challenging issues in Grid Scheduling is dynamically choosing the best resource, by exploiting the topology and load information present at the time of scheduling. Here topology represents the delay or elapse time to reach the resource. In the proposed...
With the development of the wireless communications technology and the multimedia technology, the wireless internet multimedia transport of real-time becomes an important applications field. We will meet a problem that the distinguish of the status of package loss is not very good which will affect the QoS when we transport multimedia data in wireless internet. Based on this problem the article comes...
This paper presents a new architecture for a DLL based frequency synthesizer for wireless transceivers. Owing to its DLL based nature, the synthesizer generates the target frequencies with minimum phase noise. The proposed architecture takes the advantage of a combination of a frequency divider and an edge combiner to create the desired frequencies. As an example, the synthesizer is adopted to create...
In the paper, we derive a delayed reaction-diffusion equations, which describes a multi-species Predator-prey system. By coupling the perturbation approach with the method of upper and lower solutions, we prove that the traveling wave fronts exist and appear monotone, which connect the zero solution with the positive steady state. Finally, we draw a conclusion to point out that the existence of traveling...
This paper is devoted to study the problem of a partially dependent predator-prey model with time delay. The effect of delay on the stability of the interior positive equilibrium is investigated, and the conditions for existence of Hopf bifurcations are given. Finally, numerical simulations are carried out to illustrate our analytical results, the largest Lyapunov exponent is computed, and the chaotic...
In this paper, the chaos in fractional-order neutral delay differential equation (NDDE) with fractional-order is discussed. Two different values of fractional-order are considered in the investigated system. Based on the chaotic NDDE system, we realize spread secure communications. Finally, fractional and integer-order neutral differential chaotic systems are compared in communication, and the simulation...
Based on the analysis of the existing utility-based forwarding mechanisms, for the inefficient forwarding of history encounter time based forwarding mechanism in the initial phase of the node movement, a Random and Encounter Time Based algorithm named RET is proposed in this paper. RET divides the nodes moving into two phases-random forwarding phase (initial phase) and utility-based forwarding phase...
This paper represents a systematic procedure of simulating charge pump based delay locked loops (DLLs). The presented procedure is based on the systematic modelling of the DLL components in Matlab simulink simulator. The system has been designed for 1Hz input clock signal that by changing the whole system scale, it can be used for every other input frequencies. The simulation results in Matlab and...
It is heterogeneous wireless Networks (HWN) aggregation foundation for vertical handoff (VHO), and that is key characters of core technology for multi-network aggregation. The currently mechanism handoff trigger is analyzed, a best network selected (BNS) framework is designed, the parameters of network terminal and user terminal of effecting VHO algorithm, and which also include norm of capable parameters,...
In this paper, one studies the existence and uniqueness of almost periodic mild solutions to fractional delayed differential equations of the form Dtα x(t) = Ax(t) + Dtα-1 f(t, xt) where 1 <; α <; 2, A: D(A) ⊂ X → X is a linear densely defined operator of sectional type on a complex Banach space X and f: R × X → X is jointly continuous. Let f(t, x) be almost periodic in t ∈ R uniformly for x...
This paper develops a ANFIS controller design method for temperature control in plastic extrusion system. The plastic extrusion process control system uses first order transfer function. Plastic extrusion system is generally nonlinear and the temperature of the plastic extrusion system may vary over a wide range subjected to various disturbances. The plastic extrusion system compresses of couple effects,...
This paper describes a novel single bit control system processor with efficient code density in System onChip(SOC) and mixed signal applications. Advanced process technology nowadays enables hundreds of million transistors to be integrated onto a single chip, making system-on-a-chip designs more feasible than ever. Such SOC chips usually consist of various components such as analog-to-digital (ADCs)...
Ultra-Wide Band (UWB) wireless communication is a promising spread-spectrum technology with features of low cost, low power and high time resolution has potentially important applications in wireless ad hoc networks. This paper presents a novel quality of service (QoS) routing scheme for wireless multimedia ad hoc networks. Besides applying neighbor detection method in route discovery procedure, the...
Compared with generalization, anatomy preserves both the privacy and the correlation in data publication. On the other hand, data streams have gradually become a widely used data representation. Therefore, in this paper, we develop a novel algorithm of SANATOMY, to solve the problem of anatomized publishing of data streams. It creates l-diverse buckets according to the stream tuples' sensitive values,...
This report presents a technique of chaotification based on the optimal time-delay feedback that can make a system chaotic with large chaotic parameters range. The bifurcation analysis is done to determine the stability of the time-delay system. An implicit performance index and an optimization strategy are proposed for the time-delay control scheme that can be effectively carried out to obtain the...
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