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SEM is a burgeoning multivariate data analysis method. ARMA is one of the most widely used model about time series data. This paper compare the mathematical model about the SEM and ARMA model, and find they are similar. So we can process ARMA model with SEM.
With the rapid growth of data and the growing demand from users on the system performance, data availability has become the most important issue in large-scale storage systems. Due to the ability to provide space-optimal data redundancy to protect against node failures, erasure codes have seen widely deployment. To ensure data availability, it is crucial to recover node failures quickly. In this paper,...
Probabilistic rough sets define positive, negative and boundary regions, and the probabilistic thresholds determine the Gini coefficient of three regions. We use Game-Theoretic Rough Sets to investigate the relationship between changes in probabilistic thresholds and their impacts on the Gini coefficient of rough set regions. The example shows that effective probabilistic thresholds values corresponding...
Chaotic synchronization between one and multiple systems has been innovatively postulated in this work for the purpose of achieving secure communication in the wireless sensor networks. The chaotic modulating signals for both the base station that acts as the ??commander?? and all sensor nodes are modelled based on the time-delay Lorenz system. Synchronization between the base and sensor nodes has...
This paper studied an intelligent adaptive flight control method. The classic dynamic inversion control provides automatic adaptation at the flight point, which is particularly suited to aerospace vehicles (aircraft, pitchers or entry vehicles). However, the inversion process is sensitive to modeling errors. A possible improvement method is to compensate these errors. In this paper, neural networks...
In view of the discontinuity of the data of service sectors due to the diameter change, firstly, the paper measures the total factor productivity growth of service sectors based on input-output tables. Then, using the panel data model, we test the relationship between offshore service outsourcing and the total factor productivity growth of services sectors. The result shows that, currently, offshore...
This paper is about two competing supply chains' structure decision, each of which consists of three level (manufacture-distributor- retailer). Firstly, models about two supply chains competition are established by nonlinear programming and game theory. Secondly, the optimal solution in three scenarios: pure decentralized system, pure centralized system and hybrid system is resolved. Finally, the...
This paper is focused on the study of coupled heat and mass transfer in a liquid film over an unsteady stretching surface. The stretching rate and temperature of the sheet vary with time. The governing partial differential equations are transformed into ordinary differential equations by using similarity transformations. The resulting similarity equations are solved analytically by an efficient perturbation...
Based on the physical dynamic properties model of the intake system (from the state equation and measurement equation) and the intake system model and the statistical properties assumption of sensor noise, the measured data was mapped to the state space. Then using the state predictor, through the EKF (Extended Kalman Filter) , preprocessing the data from the intake manifold absolute pressure sensor,...
Simulation of the ultrasound field in photoacoustic tomography (PAT) plays an important role in the study of PAT. The validity of theories can be verified through the simulation without the cost of many experiments, and it is convenient to adjust parameters when the experiment conditions change. In this paper, an improved method is proposed to exactly simulate the ultrasound field. The time-of-flight...
Foreground object extraction, which aims to accurately separate a foreground object from its background in still images, plays an important role in many computer vision applications. An interactive object extraction method by extending the graph cut approach is presented in this paper. The coarse-to-fine object segmentation method makes it efficiently to specify the main object and adjust the detail...
In experiments and calculations of the incremental transmission losses-??, the Author find that if use the Matrix formed by double of the line resistance-2R to replace the B matrix of DC power formed by susceptance, the result will not be the node voltage phase angle but be incremental transmission losses-??. Then the author use the Kirchmaver five nodes example to contrast the results of this method...
The component mode synthesis (CMS) technique has been widely used in engineering for its efficiency in dynamic analyses. The principle of CMS with fixed interfaces is introduced, the detail steps in calculation are summed up, and the flow chart of algorithm is also given. The dynamic properties of elastic tube bundles are investigated with the application of CMS. The effect of numbers of nominal modes...
As semiconductor technology continues to evolve, the chip temperature increases rapidly due to the exponentially growing power consumption. In the meantime, the high chip temperature increases the leakage power, which is becoming the dominate part in the overall power consumption for sub-micron IC circuits. A power/thermal-aware computing technique becomes ineffective if this temperature/leakage relation...
Group mobility is prevalent in many MANET applications, such as disaster recovery, military actions, etc., and group partitions are unavoidable under such dynamic network. Group partitioning may result in frequent link disconnections, which hence affects the inter-group communication. In this paper, we introduce a framework for predicting potential group partitions in MANETs such that remedial actions...
Network coding is a new proposed way for data transmission over networks, allowing each intermediate nodes to perform encoding. This transmission scheme, totally different from traditional routing one, was proved to be able to obtain larger capacity, higher efficiency, robustness and security for the network. In this paper, we focus on certain security issue, give an overview for network coding, and...
The downlink capacity and coverage of mobile WiMAX system with array antenna is evaluated based on given interference analysis with multi-cell deployment. The link budget model with array antenna is also given. The results show that the capacity and coverage of mobile WiMAX based on the link level performance with CTC encoding.
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