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We present stochastic vehicle routing policies for detection of any number of anomalies in a set of regions of interest. The autonomous vehicle collects information from a set of regions and sends it to a fusion center. The vehicle follows a randomized region selection policy at each iteration. Using the collected information, the fusion center runs an ensemble of cumulative sum (CUSUM) algorithms...
In deterministic timing optimization, timing slack is used to verify whether a timing violation occurs or not without timing updates on the entire circuit. However, in statistical timing optimization, there is currently no criterion to verify whether a timing violation occurs. This paper proposes a novel metric of timing yield slack to verify whether the timing yield violation occurs without updating...
A framework for the joint design of wireless network and controllers is proposed. Multiple control systems are considered where the sensor measurements are transmitted to the controller over the IEEE 802.15.4 protocol. The essential issues of wireless networked control systems (NCSs) are investigated to provide an abstraction of the wireless network for a co-design approach. We first present an analytical...
In order to optimize pedestrian signal cycle, queuing theory and probability theory were used to build delay model of pedestrian-vehicle system, and then put forward the calculation method of conversion coefficient of pedestrian crowd and vehicles. The delays of pedestrian and vehicle were calculated by equilibrium phase delay formula. The critical volume curves of pedestrian signal for pedestrian...
In the classical version of the Bayesian quickest change detection problem proposed by Shiryaev in the nineteen sixties, there is a sequence of observations whose distribution changes at a random time, and the goal is to minimize the average detection delay, subject to a constraint on the probability of false alarm. We consider this quickest change detection problem with an additional constraint on...
Modern logic synthesis systems apply a sequence of loosely-related function-preserving transformations to gradually improve the circuit with respect to certain criteria such as area, performance, power, etc. For the quality of a complete synthesis run, the application order of the transformations for the individual steps are critical as they can produce vastly different outcomes. In practice, the...
In this paper, we propose a new intersection-based geographical routing protocol, called delay tolerant routing protocol (DTRP) that adapts to the changes in the local topology within city environments. DTRP is based on an effective selection of road intersections through which a packet must pass to reach the gateway to the Internet. The selection, in such delay tolerant VANETs, is made in a way that...
In order to evaluate the influence of neighbors' quality to P2P streaming system's performance during scheduling, this paper establishes a markov chain based differential function model to analyze the relationship between peer's average startup delay and probability neighbors have wanted data as well as neighbors' available upload bandwidth. This paper also proposes a scheduling feedback algorithm,...
This paper considers the problem of how to quickly and accurately scan a multichannel spectrum to determine the availability of each channel for a secondary user in a cognitive radio network. The secondary user is able to simultaneously observe more than one channel. We consider a sequential decision setup. After taking each sample, the secondary user should decide either to stop or continue scanning...
Dynamic power dissipation due to switching activity has been one of the major concerns in power optimisation. By approximating the switching activity of circuit nodes as internal switching probabilities using AND Inverter graphs (AIGs), it is possible to estimate and optimise power dissipation. In our work, the internal switching probabilities are derived via probabilistic estimation method under...
In this paper, we propose a group handover scheme in multi-access networks, which utilizes adjusted delay to prevent handover blockings caused by a group handover. In the group handover, a lot of users try to initiate a handover at the same time, which causes network congestion and increases the probability that the handover would be blocked. In our proposed scheme, to prevent these problems of a...
To deal with the risk of project delay in aviation manufacturing enterprises and with the attempt to give project managers a more accurate understanding of project time scheduling, a novel concept of probability tolerance design is discussed in this article. Probability tolerance design focuses on optimizing the estimation of the task duration tolerance with the consideration of stochastic situations...
We consider problems where multiple agents cooperate to control their individual state so as to optimize a common objective while communicating with each other to exchange state information. Since communication costs can be significant, we seek conditions under which communication of state information among nodes can be minimized while still ensuring that the optimization process converges. In prior...
Based on inventory theory, stochastic optimization and probability theory, we analyze a stochastic demand -based supply chain inventory problem and formulate models to explore the optimization of a 2-stage series inventory system and the effects of demand uncertainty on endogenous lead time uncertainty under different conditions in this paper. We develop supplier and manufacturer models with stochastic...
In this paper, an integrated methodology is developed for optimizing inspection and maintenance of a component where delayed repair is considered to be one of feasible options. The models of failures, risk and life cycle cost are developed using probability, stochastic process and the delay time concept. The model is intended to optimise the inspection intervals and the delay of repair simultaneously...
The practical application of stochastic approximation methods requires a reliable means to stop the iterative process when the estimate is close to the optimizer or when further improvement in the estimate is doubtful. Conventional ideas on stopping stochastic approximation algorithms employ criteria based on a proxy distribution - usually the asymptotic distribution. Yet difficulties may arise when...
We consider a wireless sensor network with n sensor nodes. The sensed data needs to be transferred in a multi-hop fashion to a common processing center. We consider the standard data sampling/sensing scheme where the sensor nodes have a sampling process independent of the transmission scheme. In this paper, we study the problem of optimizing the end-to-end delay in a multi-hop single-sink wireless...
The paper emphasize particularly on the two problem of solving multi-level stores spare parts calculation: (1) In order to resolve calculation problems for recurrence and recursion of multi-level stocks P(probability of spares sufficiency) and MLDT(Mean Logistics Delay Time), compile the simulation algorithm procedure based on graphical interfaces, and provide a convenience and applied calculation...
In mobile ad hoc networks (MANETs), a single certificate authority (CA) node could be a security bottleneck. Multiple replica of CA is fault tolerant, but the network is as vulnerable as single CA or even worse since breaking one of the CAs means breaking all of them. Many distributed CA models based on the secret sharing scheme are proposed. In this paper, the suitable construction of the distributed...
In this paper, we proposed a novel probability convergence based particle swarm optimization algorithm for the multiple constrained QoS multicast routing. This algorithm is inspired from the probability convergence attributes. The main contents of this paper includes: (1) A novel particle sorting rule of swarm are designed. (2) A novel probability convergence mechanism is developed in the position...
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