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In recent years, the community structures in complex networks has become a research hotspot. In this paper, we focus on weighted networks and propose a unique algorithm on detecting overlapping communities of weighted networks based on central figure with considerable accuracy. In the algorithm, all the central figures are first extracted. Then to each central figure, nodes are absorbed by closures...
A new method of automatic multiband SAR image registration based on Affine Scale Invariant and sparse-based despeckling is proposed. It first employs the sparse representation-based despeckling method to erase affection of speckle noise on image registration. Second, Normalized gradient feature space is designed to cope with affection of different grey value brought multiband SAR. Affine scale invariant...
The performance of lithium-ion rechargeable battery depends on its coulombic efficiency, which determines the measurement accuracy of the state of charge as well. In this context, the regularity that coulombic efficiency changes with environmental temperature and charge-discharge rate was analyzed in different cases, and a TPS (Thin Plate Spline) surface fitting-based coulombic efficiency estimation...
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.
Vehicular Ad Hoc Networks (VANETs) can provide safety and non-safety related applications and services to improve the passenger safety and comfort. Due to the space and time dynamics of moving vehicles, network connectivity is an important performance metric to indicate the quality of the network and the user's satisfaction. Grouping vehicles into platoons in the highway can improve road safety, reduce...
Many new online business models have emerged in recent years. In China, online group buying (OGB) is widely used as an effective marketing method. This paper provides a research model to examine the technology acceptance factors, social and psychological factors on Chinese customer's purchase intention towards online group buying. Questionnaire survey and statistical analysis method are used in this...
As the wind power industry thrives, more wind turbines are being installed across the country. A large group of wind turbines built next to each other forms a wind farm, which may cause potential EMI (Electromagnetic Interference) to nearby radio devices. Some studies have been performed to investigate this impact on radio applications, mostly on radar, because by far there have been many cases found...
The security situation of the Internet of Things (IoT) is serious. IoT encounters security problems more than traditional computer networks does. The attributes of dispersity and mass of IoT require that approaches to IoT security should be dynamic. Inspired by immunology, a novel approach to IoT security is proposed in this paper. Traditional network security models are used for reference and special...
A safe and stable web mail is a major component of office automation. However because of the low security, its development in E-commerce and E-government is limited greatly. This text introduces the technical framework and working principles of a secure web mail system based on FreeBSD UNIX together with the problems of stability and security of an enterprise mail system. A Secure web mail system...
In wireless resource allocation, improving system throughput and simultaneously enhancing user fairness are two fundamental but contradictory objectives. As for fairness, both short-term and long-term fairness are of significant importance. However, less effort has been dedicated to explore the optimal tradeoff between system throughput and the two mentioned fairness in terms of widely used Jain's...
With the minimization development of electronic devices and products, nanotechnology and nanomaterials are widely applied in different fields of electronic packaging. Carbon nanotube (CNT) is an ideal material due to its excellent electrical and thermal conductivities. In the present paper, the application of CNT bundles as chip bumps was experimentally investigated. The electrical resistances of...
A good quality graphene is transferred onto honeycomb-like CNTs arrays with inner supporting CNTs. The efficient field emission is demonstrated due to a high aspect ratio protrusions and graphene crack edges. A high efficient current density about 1.2 mA/cm2 at threshold electric field of 7.8 V/μm with a turn-on electric field of 1.8 V/μm at the current density of 10 μA/cm2 is observed due to high...
This paper designs an expert system which can apply for analyzing on urban transit train signal system blocking. The system can be used for blocking and analyzing in various blocking signal systems. In the end, a urban rail transit has been designed by the system, and the results verify that the system is effective.
Vehicular Ad Hoc Networks (VANETs) and their diverse applications experience growing interest in both academic and industry. Different types of traffic packets delivered through vehicle-to-vehicle and vehicle-to-infrastructure communications are intended to improve passenger safety and comfort. In this paper, we propose a multiple priority supported Medium Access Control (MAC) protocol for VANETs...
Universities are actively exploring and implementing the cooperation courses with enterprises. In software engineering, the key construction is to build a win-win course to meet the needs of student development and enterprise requirements. This paper introduces a co-teaching curriculum model aimed at narrowing the theory-practice gap. The course construction system and diversified teaching methods...
Network coverage is a key research problem in wireless sensor network field. Sensor node energy is generally supplied by batteries, and the energy is limited, so an effective energy balance strategy can extend the networks' life in the process of the coverage. A chaotic particle swarm optimization coverage control algorithm is proposed that based on the concept of energy balance. It utilizes chaotic...
In Promotional Subspace Mining (PSM), Pat Ranking provides an effective way to locate the outstanding subspaces for a given object among a group of competitive objects in multidimensional data. In this paper, we propose a top subspace synthesis framework that aims to integrate the results produced through independent Pat Ranking procedures on multiple data sets. This solution framework provides a...
In this study, effect of DO on simultaneous nitrification and denitrification in catching bed biofilm reactor were investigated, using three sets of parallel reactors controlled with different DO concentration. The average removal rate of COD was reached at 87% over the range of 0∼3mg/L of DO. Comparely, NH4+-N removal rate increased significantly with the increase of DO concentration. The optimize...
A laboratory-scale intermittently aerate membrane was applied to treat domestic sewage. At hydraulic retention tims (HRT)of 6h and dissolved oxygen of 1∼2mg/L in aeration, three aeration/non-aeration cycles including 60min/60min, 60min/90min and 90min/60min were experimented separately, which form microenvironment of aerobic/anoxia to reach simultaneous nitrification and denitrification. At a result,...
The rural finance can separate into formal and informal finance departments with differences operation systems. The informal finance institutions have advantages in information collection and can supply credit to difference farmers with difference interest rate, so, it can improve the efficiency in rural finance market by join in. The formal finance institution can supply funds with lower cost with...
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