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The rapid development of cloud computing has resulted in the emergence of numerous web services on the Internet. Selecting a suitable cloud service is becoming a major problem for users especially non-professionals. Quality of Service (QoS) is considered to be the criterion for judging web services. There are several Collaborative Filtering (CF)-based QoS prediction methods proposed in recent years...
A hybrid coordinates federated filtering fusion algorithm with information feedback is developed for a passive maneuvering target tracking. The algorithm is designed to deal with angle-only measurements for accurately estimating the kinematic state components of target motion. The hierarchical architecture of the algorithm comprises a group of local processors and a global processor. In each local...
This paper presents the design of an efficient heuristic method for q-time bottleneck dispatching (QBD) to achieve the bottleneck utilization and minimum of work-in-process (WIP) level in order to reduce the hold lots in q-time start step and prevent q-time violations from quality issues. The core concept of this method consists of linear programming problems of operation constraints such as bottleneck...
Discovery the most effectual resolution to control the greenhouse gases (GHG) emissions is one of the most essential long-term challenges sophisticated by the society. Efficacious frameworks for CO2 management will definitely advantageous on reducing CO2 emission while promoting the technologies and investments to enhance energy efficiencies and decrease the CO2 intensities. Therefore, the GHG management...
Marine shafting system is the indispensable component of a ship power plant. As the "heart" of the ship, marine power plant provides propulsion and secondary energy for normal navigation, operations, combats, and other needs of the ship it. Compared with the classical vibration analysis and the oil analysis theory, the method based on power flow is easier to explain the energy distribution...
Ship shafting system is the indispensable component of a ship power plant. The primary function of a ship shafting system is to carry out energy transfer from marine engine to propeller, transmit axial thrust produced by the rotation of propeller to the hull, and drive the ship ahead. Vibrational power flow combines the effects of force and velocity amplitudes as well as the irrelative phase angle...
The steelmaking-continuous casting (SCC) process, which consists of steelmaking, refining and continuous casting stage, is usually the critical process in iron and steel industry. This paper aims to propose a simulation method for the realistic hybrid flow shop scheduling problem resulting from the SCC process. A mathematic model based on a comprehensive investigation is built first. Then, a simulation...
Considering operation constraints and the actual load characteristic, the maximum power supply capability and power supply margin of distribution network is real-time calculated, which evaluates more realistically the safety level of distribution network under the current operation mode. It is helpful for the distribution network to supply users safely and reliably with electricity of high quality,...
Grey model using dimensional information update technology always contains the latest information from sample data, it guarantees the accuracy of mid-long term load forecasting. Semi-parametric regression model which combines the advantages of parametric model and nonparametric model, it can fully reflect the complexity and uncertainties of the load change. This paper put forward an improved method...
The adaptive filtering algorithm Based on the current statistical model is the common method in maneuvering targets tracking. Aiming to improve the performance of the traditional filtering algorithm Based on current statistical model, a kind of new algorithm is put forward. At last, simulation study is made to prove its better performance. The improved algorithm not only increases the dynamic range...
An analytical model is proposed to calculate the initial infusion of a microneedle array driven by a micropump. By assuming the initial infusion of each microneedle undergoes a spherical expansion, the model is able to calculate the time-varying expansion radius, as well as the flow rate and infusion pressure, provided that the material properties and the microneedle system parameters are known. For...
To develop an energy-efficient routing protocol becomes one of the most important and difficult key tasks for wireless sensor networks. Traditional Rumor Routing is effective in random path building but winding or even looped path is prone to be formed, leading to enormous energy wasting. Clustering Rumor Routing proposed in this paper has advantages in energy saving by making full use of three features-clustering...
In this paper, based on the noise signal, BBD ball mill material detection method and mill pulverizing system optimization control are presented. The noise of ball mill is decomposed using wavelet packet. The eigenvectors reflecting coal level of mill can be obtained from wavelet packet parameters. Through neural network training, the statistical model of coal level and ball mill eigenvectors is established...
In this paper, the nonlinear dynamics of PWM-type converters is studied. The sampled-data approach is applied to the periodic modeling and stability analysis of switching converters. The period-one and period-two modeling for the converter dynamics is proposed to predict the occurrence of the corresponding bifurcations and used to analyze the stability of converter circuits. The example study of buck...
A mathematic model has been presented for a high speed liquid jet penetration into soft solid by a needle-free injection system. The model consists of a cylindrical column formed by the initial jet penetration and an expansion sphere due to continuous deposition of the liquid. By solving the equations of energy conservation and mass conservation, the penetration depth and the radius of the expansion...
This paper deals with transfer alignment between the slave inertial navigation system (INS) of scientific experiment and the master INS of space moving platform. Firstly, the navigation equations of the master and slave INS in J2000 inertial frame are presented. Then, we derive the state equations of transfer alignment model in detail, which include the error equations of the slave INS navigation...
This paper deals with the equivalence between the traditional transfer alignment (TTA) equations and the rapid transfer alignment (RTA) equations proposed by Kain and Cloutier. The TTA and RTA equations are presented firstly, and the platform misalignment vector, the physical misalignment vector and the measurement misalignment vector introduced by Kain and Cloutier are explained. The relationships...
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