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Incomplete data clustering plays an important role in the big data analysis and processing. Existing algorithms for clustering incomplete high-dimensional big data have low performances in both efficiency and effectiveness. The paper proposes an incomplete high-dimensional big data clustering algorithm based on feature selection and partial distance strategy. First, a hierarchical clustering-based...
Resource scheduling is one of the key problems of cloud computing, no wonder, the scheduling policy and algorithm affect the performance of the cloud system directly. In order to improve the utilization of cloud computing resources and keep load balancing, a cloud computing resource scheduling algorithm based on estimation of distribution algorithm is proposed. In this algorithm, the idea of population...
This paper proposes a novel distributed energy beamforming and information transfer (DEBIT) scheme for simultaneous information and power transfer in wireless networks. We focus on the design of the DEBIT scheme over multiway relay channels (MWRCs), where multiple users exchange information with an energy-harvesting amplify-and-forward relay node. We develop the optimal transmission strategy to maximize...
In this paper, a compact waveguide twist for terahertz frequency is designed. The compact structure with low reflection is achieved by a step waveguide. It has the compact sizes and low return loss properties. The result shows the return loss is more than 28 dB from 325 to 355GHz.
With the rapid development of mobile internet and pervasion of Location-Based Service (LBS), location privacy has become an important issue. In this paper, we present DeCache, a modified location privacy protection system model, which pre-caches the user-demanded LBS data. So the mobile users don't have to send the network LBS requests when they need to access LBS. This is more secure than the previous...
Energy harvesting has been widely considered in many wireless applications, especially the wireless sensor networks. This paper develops a novel approach to energy-harvesting powered transmissions under arbitrary packet arrival process and strict deadline constraints over time-varying channels. It is shown that the problem can be formulated as a convex program. Relying on the specific structure of...
The disturbance models in industry system always change with several disturbances existing simultaneously. The performance assessment based on Single Model Time-variant Minimum Variance (SMTMV) is not available to system with multiple time-variant disturbances. Since the transient deviation exists, the performance assessment based on Multi-model Switching Time-variant Minimum Variance (MSTMV) is not...
In this paper, by incorporating “minimal learning parameter (MLP)” technique into an adaptive fuzzy control design framework, a backstepping based control algorithem is presented for a class of uncertain strict-feedback nonlinear discrete-time systems. The proposed scheme is able to circumvent the problem of “curse of dimension” for high-dimensional systems. thus the number of parameters updated online...
In this paper, a compact waveguide twist for terahertz frequency is designed. The compact structure with low reflection is achieved by a step waveguide. It has the compact sizes and low return loss properties. The result shows the return loss is more than 28 dB from 325 to 355GHz.
With the rapid development of Internet technology, information resources on the Internet become more abundant, but also bring some problems like diversity, heterogeneity, disorder, and redundancy. Given a brief expression like search keywords only, users' needs are ambiguous. Therefore, current technologies of search applications relying on direct keyword matching cannot meet the requirements of users...
In distributed storage systems, a substantial volume of data are stored in a distributed fashion, across a large number of storage nodes. To maintain data integrity, when existing storage nodes fail, lost data are regenerated at replacement nodes. Regenerating multiple data losses in batches can reduce the consumption of bandwidth. However, existing schemes are only able to achieve lower bandwidth...
In this paper, we study adaptive control design problem of piecewise-linear systems with matching parametric uncertainties. The basic idea is to construct a piecewise control law and a piecewise parameter adaptation law in such a way that a piecewise quadric Lyapunov function can be used to establish the global stability. All of the synthesis conditions are formulated as Linear Matrix Inequities and...
For the requirements of safe and effective when cleaning, we designed a kind of high-pressure pulse gas impact descaling device. The device adopts pneumatic control, using the energy of the jet flow and shock wave produced by the instantaneous release of compressed air to smash the attachment in the wall of the pipe, so as to achieve the pipe cleaning. Analyzed the principles and operation process...
For a non-minimum phase system, a multiple models direct adaptive controller using Dimension-by-Dimension technology is presented. The multiple models are constituted with controller directly, which lower the calculation and avoid the ill-condition matrix solution. The multiple models are composed of multiple fixed controllers, one free-running adaptive controller and one re-initialized adaptive controller...
Distributed storage systems (DSS) play an important role in data storage applications, since they provide high reliability for huge data storage requirement. As node failures are frequent in a large distributed storage system, the performance of repairing node failure causes many researchers' interests. In this paper, we propose a distributed storage code to minimize the coding complexity during the...
In order to select proper ammunition to attack a certain target, we proposed a new method for ammunition target matching sequencing based on rough set and weighted TOPSIS. After depicting the mechanism of ammunition damage and target anti-damage, the authors constructed the ammunition target matching index system. Rough set theory was applied to reduce index and decide the weights of key index. The...
Traditional DEA model such as CCR and BCC cannot be applied to rank the efficient DMUs. In this paper, we present a new DEA-based model, in which the upper bound value of efficiency can be relaxed, to evaluate and rank the educational efficiency and performance of vocational schools in 30 provinces in mainland China. This new technique, super-efficiency data envelope analysis, abbreviated to SE-DEA,...
This paper introduces the design of our real time vision-based motion performance animation system. The system requires user to wear a small set of markers. The low-dimensional control signals from user's performance are first used to construct a series of local models, which could be later used to animation synthesis. When constructing local models, we preprocess motion capture data to K-nearest...
the evaporation from ground surface (E) and precipitation (P) are two important factors for estimating the water resource. Based on the evaporation equation by Takahashi, from atmospheric available water point of view, the evaporation and the available rainfall (Δw) in Ordos Plateau have been calculated and analyzed. The datasets of the monthly precipitation and temperature at 13 stations in Ordos...
Subject-based English teaching should adapt the fast development of HVAC, which need teaching intention promotion, teaching content update, and teaching method optimization. Subject-based English teaching should pay more attention to specialized English structure and practical rules for cultivating High-quality talents under the era of knowledgement economy.
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