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With an overwhelming number of web services online, recommending services for automatic mashup creation greatly facilitates the composition process of developers. Various approaches have been proposed for the task. However, these approaches concentrate on improving the recommending accuracy of an individual service, which give rise to two problems: (1) Top-ranked services may be highly redundant with...
Carrier phase measurement is one of the most important measurements of GNSS receiver, which can be used for precise positioning. In order to achieve a reliable and high precise position, a high quality carrier-phase measurement is needed. Although carrier phase is very precise, there are also many factors in the receiver that will influence the carrier phase measurement performance. The relationship...
The route planning of RUAV (Reconnaissance Unmanned Aerial Vehicle) in unknown environment is a difficult problem, especially when goal is vague. In order to solve the problem, paper proposes the Regional Heuristic D∗(RHD∗) algorithm. This method divides the whole environment into a series of quasi-goal regions, and then calls RHD∗ algorithm to get the reference route. When the RUAV flying along with...
A new method of measuring thermal resistance for manganese-copper wire precision resistance is developed. The thermal resistance calculation formula which is suitable for manganese-copper wire precision resistance is derived. A test system for temperature characteristic of resistance and load effect of resistance is built. The phenomenon of zero load effect point is explained. The repeatability of...
In this paper, we propose a skyline computation system UCOS (User Clustering based Online Skyline), which divides the computation into offline and online stages. Based on the truth that QoS similarity implies the skyline similarity, the offline stage of UCOS system dose user clustering according to the historical user-service QoS records by given distance metrics. Then, we compute the representative...
In this paper, we propose a novel framework WSCRec, in which historical information (i.e., execution logs) are utilized to facilitate the process of Web service composition. According to the execution logs of composite services, appropriate services which have been proved to be more reliable and robust and have higher probability to fulfill users' demands are located.
This paper proposes a novel trust evaluation method for service choreography. Compared with current work towards this problem, it considers not only the trust for individual partner services and the explicit trust relation among partner services that have logical dependencies for each other, but also the implicit trust relation implied in data-dependencies among services. A serial of experiments,...
Nowadays, how to efficiently compose Web services has become a hotspot. In this paper, we introduce a method of recommending an optimal service sequence based on the original service sequence for a composite service. This method uses a Bayesian-based approach and selects the service sequence that has the largest probability as the best choice. Compared with existing methods, this method has two advantages:...
In order to manifest high superiority and high efficiency of traffic guidance system, this paper analyzes the traffic guidance system by means of variable message signs, and studies dynamic regional guidance problems under the conditions of real-time traffic, and puts forward a regional traffic dynamic guidance algorithm. The algorithm balances traffic flow by partitioning traffic guidance regions...
The wireless sensor network is a type of the wireless ad-hoc networks. It is composed of nodes with limited battery power. One of the most critical issues in designing wireless sensor networks is to minimize the energy consumption for longevity. In this paper, we first entirely analyzes state clustering protocol and LEACH routing protocol, then present a novel clustering routing protocol for wireless...
Single-electron devices (SEDs) have ultra-low power dissipation and high integration density, which make them promising candidates as basic circuit elements of the next generation VLSI circuits. In this paper, we propose two novel circuit single-electron architectures: the single-electron simulated annealing algorithm (SAA) circuit and the single-electron cellular neural network (CNN). We used the...
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