In this paper, we analyze the data delivery delay at the road intersection, which is influenced by switch operation of traffic lights and the topology of roadways. By employing the arrival rate and departure rate and ...
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In this paper, we propose a method of automatic detection of texture-periodicity using superposition of distance matching functions (SDMF) followed by computation of their first forward differences. The method has bee...
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Fast fashion is a commercial pattern which provides fashionable clothes at affordable *** mode needs rapid response supply chain to respond to varying fashion *** styles are introduced in every sale period to cover fa...
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Fast fashion is a commercial pattern which provides fashionable clothes at affordable *** mode needs rapid response supply chain to respond to varying fashion *** styles are introduced in every sale period to cover fashion *** order to maximize profits,replenishment quantity of each style should be decided in every *** purchasing and replenishing process over multiple periods based on uncertainty customer demand is modeled,which is formulated by a stochastic choice *** consumers visit a store in a stochastic sequence and choosing dynamically from the available fashion styles(buy or not buy) according to a utility maximization *** purchase process in a retail shop for multi-period is *** algorithm which combines simulated anneal(SA) with gradient estimation is proposed to find the optimal replenishing strategy from the simulation program.
A problem of boundary stabilization of a wave equation with anti-damping term in annular is *** term puts some eigenvalues of the open-loop system in the right half of the complex *** the initial and boundary conditio...
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A problem of boundary stabilization of a wave equation with anti-damping term in annular is *** term puts some eigenvalues of the open-loop system in the right half of the complex *** the initial and boundary conditions are rotationally symmetric,the equation in two-dimensional(2-D)annular is transformed to an equivalent one-dimensional(1-D)equation in polar coordinates.A feedback law based on the backstepping method is *** a successive approximation,it's proved that there exists a unique solution of the integral kernel which weights the state feedback on ***'s also proved that the energy function of the closed-loop system decays exponentially,implying the exponential stability of the closed-loop *** effectiveness of the control is illustrated with numerical simulations.
In order to improve the security of multivariable process, this paper studied the reconstruction process of control system with single actuator fault. By equating the reconfigurable control system with a biological im...
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Vehicular Ad-Hoc Networks (VANETs) as a part of intelligent transportation systems (ITS) are a new perspective to settle the traffic problem. Because of the high velocity, variational topology and such other character...
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Vehicular Ad-Hoc Networks (VANETs) as a part of intelligent transportation systems (ITS) are a new perspective to settle the traffic problem. Because of the high velocity, variational topology and such other characters, the link between VANETs and road side unit (RSU) is unstable. Besides, on account of the high cost of RSU, some places can’t be covered completely which make the Internet accessing difficult and accessing delay long. In this paper, we propose a hierarchical link scheme to help vehicles access the Internet based on delay analysis for congestion scenario. We select some moving accessing help points (AHPs) from vehicles in VANETs. Two different hierarchical schemes under the circumstances of whole road covered or not are proposed. When the RSUs are enough to cover the whole road fully, we propose the inward progressive hierarchical method. When the RSUs are not enough to cover the whole road, we propose the outward extend hierarchical method. According to the delay analysis, we can get the optimal hierarchy number. This hierarchical link scheme can decrease delay and make all vehicles access the Internet with delay guarantee. The simulation results indicate that our proposed hierarchical link scheme in VANETs can decrease the link delay effectively.
Vehicular Ad hoc Networks (VANETs) which is a special form of Mobile Ad hoc Networks (MANETs) has promising application prospects in the future. Due to the rapid changing of topology structure, how to find a route whi...
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Vehicular Ad hoc Networks (VANETs) which is a special form of Mobile Ad hoc Networks (MANETs) has promising application prospects in the future. Due to the rapid changing of topology structure, how to find a route which can guarantee Quality of Service (QoS) is an important issue in VANETs. This paper presents an improved Greedy Perimeter Stateless Routing (GPSR) protocol based on our proposed next-hop node selection mechanism. Firstly, we define the link reliability in two cases which take the movement direction angle between two vehicles into consideration. Then we propose a next-hop node selection mechanism based on a weighted function which consists of link reliability between the sender node and next-hop candidate node, distance between next-hop candidate node and the destination, movement direction angle of next-hop candidate node. At last, an improved GPSR protocol is proposed based on the next-hop node selection mechanism. Simulation results are presented to evaluate the performance of the improved GPSR protocol, which shows that the performance including packet delivery ratio and average end-to-end delay of the proposed protocol is better in some situations.
In this paper, we analyze the data delivery delay at the road intersection, which is influenced by switch operation of traffic lights and the topology of roadways. By employing the arrival rate and departure rate and ...
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In this paper, we analyze the data delivery delay at the road intersection, which is influenced by switch operation of traffic lights and the topology of roadways. By employing the arrival rate and departure rate and analyzing the traffic lights operations, we propose the data delivery delay formulae for different cases, respectively. We find that adding left-turn lane to relay the packets can reduce the data delivery delay at intersections. At last, by using extensive simulations via VANETMobisim and NS-2, we compare the average end-to-end delay of single lane roadway with our results of adding left-turn lane in different conditions. The reduction of data delivery delay proves that our theoretical analysis results perform better.
In production process of carbon fiber,the accurate prediction of the performance of carbon fiber could save alot of human resources and material *** this paper,we build a prediction model of drawing performance basedo...
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In production process of carbon fiber,the accurate prediction of the performance of carbon fiber could save alot of human resources and material *** this paper,we build a prediction model of drawing performance basedon the least squares support vector machine(LS-SVM)which is optimized by particle swarm optimization(PSO)algorithm with power *** model input are the parameters of each drawing ratio of six-stage drawing process incarbon fiber drawing
Predicting interactions between drugs and target proteins is a crucial step to decipher many biological processes, and plays a critical role in drug discovery. In this work, we present an Improved Laplacian Regularize...
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