Three-phase imbalance is one of the power quality problems which is more attention for distribution network especially rural distribution network. In this paper, the power loss due to three-phase imbalance was studied, and the loss quantification method of three-phase imbalance was deduced, the energy...

With the development of virtual reality technology, the power safety training system which is convenient to carry out and reduce power accidents provides a safe training platform for power enterprises. This paper proposed the scheme of electrical safety training system database selection and design based...

Electrical safety training is one of the important parts of securing the grid operators’health and lives. Micro learning system provides a new way for electrical safety training anytime and anywhere. This paper analyses the design principle of micro electrical safety training system, an then details...

The traditional grid-connected inverter (GCI) has the disadvantage of high total harmonic distortion under the condition of unbalanced and distorted grid voltage. On this basis, a novel GCI control strategy is proposed in this paper. Firstly, a second order generalized integrator is built in the coordinate...

In order to explore the flow characteristics in Horizontal Mutation Pipe, an SIMPLEC algorithm was used to simulate the flow field in horizontal mutation pipe by using the computational fluid dynamics software of Fluent. The variation of the length of entrance zone and the local resistance coefficient...

With the development of intelligent garment industry, the production of smart clothing is a sunrise industry. And the development of electronic information technology and clothing industry has brought great convenience to our life, it also has a vast market and applications. In this paper, we design...

Micro-powder injection moulding (MIM) is the fastest growing technology within the powder metallurgy area. The reason for this growth is that it is an efficient production method. In this work, the fabrication of WC-TiC-6% was studied. The result showed that Solvent debinding + thermal debinding was...

The crystal grain of the cemented carbides can occurs in the process of sinteing of cemented carbides. Relational researches prove that appended inhibitors can prevent the growing of crystals in cemented carbides effectively. In recent years, appended Inhibitors in cemented carbides are studied at home...

Phase separation have been measured at the temperature of 25 , 45 and 65 for the polymer (agar) + solvent (DMSO) + no solvent (ethanol) ternary system by using a titration method. Through combining experimental data and empirical equations, ternary phase diagram was drawn to illustrate the mechanism...

Hexagonally ordered mesoporous silica SBA-15 was successfully synthesized for the first time using natural clay from low-grade potash ores of a salt lake in Qinghai, China, without addition of silica reagents. The influence of changes in processing parameters, such as activation method, hydrothermal...

Distribution network fault automatic location system is to solve the problem in the shortest possible time to find fault point, and the purpose is to develop a set of automatic and efficient fault point accurately addressing system. After the failure of a very short period of time, through the control...

With the development of community detection algorithm, traditional clustering methods are hardly capable enough to meet our needs. This paper proposes a new algorithm based on spectral method that can identify the overlapping and hierarchical communities in complex networks. Experiments on artificial...

A weak line identification method of energy consumption, which is suitable to the 10kV distribution network, is proposed. First, clearly put forward six loss indexes of 10kV distribution network, so as to build a distribution network weak line index system. Second, on the basis of six indexes, divide...

In distributed storage systems, data migration is an efficient method for improving system resource utility and service capacity, and balancing the load. However, the user accessing is changing over time and the state of a distributed system is in an unpredictable stochastic fluctuation, hence traditional...

The leakproofness of the submarine cable gland is of very high requirement, the traditional leakproof method can hardly meet the requirement more or less. In this paper, by researching the interference leakproof structure, we creatively applied the elastic leakproof ring into the submarine cable gland....

Synthesis of binary amphiphilic co-networks coatings composed of well-defined tri-arm star diblock copolymers cross-linked with polyhydrosiloxanes through hydrosilylation was performed to generate antifouling surfaces. The PMHS segments of the networks endow the coating with a low surface energy while...

In this work, a well-defined amphiphilic triblock copolymer poly (methacrylic acid)-block-polydimethylsiloxane-poly (methacrylic acid) (PMAA-b-PDMS-b-PMAA) synthesized via atom transfer radical polymerization was employed for the preparation of pH-responsive poly (vinylidene fluoride) (PVDF) membrane...

magnesium alloy, electrombile hub, micro arc oxidation, quality.

In this paper, a novel symmetrical split-ring resonators defected ground structure (DGS) wideband bandpass filter is proposed. This filter exhibits advantages such as miniaturization, large range of bandwidth and easy fabrication. This paper analyzes the symmetrical split-ring resonators DGS unit and...

The conjugated polymer poly(4,8-bis ((2-octyldodecyl) oxy)benzo [1,2-b:4,5-b'] dithiophene-co-p-didecyloxybenzene) (PBTB), was successfully chemically polymerized by reacting (4,8-bis ((2-octyldodecyl) oxy)benzo [1,2-b:4,5-b']dithiophene-2,6-diyl)bis(trimethylstannane) with respective 2,5- didecyloxy-1,...

Chemical copolymerization of 4,7-bis (4-hexyl-5-trimethylstannyl-2-thienyl) -2,1, 3-benzothiadiazole and 2,5-didecyloxy-1,4-dibromobenzene was carried out in refluxed toluene with bis(triphenylphosphine) palladium(II) chloride (Pd(PPh3)2Cl2) as catalyst to give donor-acceptor type poly(4,7-bis(4-hexyl-2-thienyl)-2,1,3-benzothiadiazole-co-p-didecyloxybenzene)...

There are various inclined angles between mountain ridge and wind direction in the wind farm under the condition of complex topography. It is next to impossible to simulate the shunt phenomenon in wind acceleration process use commercial software, especially the mutations of wind speed distribution in...

The effect of T4, T6, T77 and T73 ageing treatments on microstructure and stress corrosion cracking of an Al-4.2Zn-1.6Mg alloy was investigated. TEM study revealed that there is no phase on the matrix or grain boundary in the T4 sample, and the precipitates on the grain boundaries of the T6 sample were...

Using piezoelectric elements to harvest energy from ambient vibrations has been of great interest over the past few years. This paper presents a two-stage adaptive boost converter with low-voltage starter for low voltage piezoelectric energy harvester. The adaptive technique can deal with a range of...

Hexagonal spindle-shaped mesoporous alumina was prepared using Al-based metal-organic frameworks (MOFs) MIL-96 as precursor through thermal treatment method. The MIL-96 and alumina products were characterized by XRD, SEM, BET and 27Al-NMR. Results from these characterizations showed that alumina products...

The explosive risk evaluation of LPG tank under fire is important for putting forward the safety measurement, in order to improve the evaluation correctness, and the fisher fishing algorithm and the grey relational analysis are applied in it. Firstly, the explosion characteristics of LPG tank under fire...

The establishment of new generation of high efficiency video coding (HEVC) standard has been completed. There are many achievements for the research on HEVC coding efficiency, but there are few researches on HEVC based error concealment. In this paper, the packet loss of the simulation channel transmission...

As wind energy is widely used nowadays, it is more and more important to predict wind turbine downtime and organize maintenance just in time. Two types of data systems have been widely adopted for monitoring wind turbine condition: supervisory control and data acquisition (SCADA) and condition monitoring...

Currently, Data acquisition system is widely used in rader data fields. Demands are increasing on the rader data acquisition system with the development of rader technology. Frequently system upgrading not only increase the design time and cost, but also increase the burden on the designers, and sometimes...

A low power, high dc gain, high speed and large swing operational transconductance amplifier (OTA) is proposed. The OTA achieve 104dB dc gain and 3.65GHz gain bandwidth product (GBW) and only dissipates 38mW under 1.8V power supply. It is fabricated in 0.18um CMOS process and occupies 0.146mm2. It is...

In view of the limited anti-noise of traditional traffic lane edge detection algorithm, the paper put forward to a new traffic lane edge detection algorithm based on traditional mathematical morphology. For solving the problem of uneven road surface caused by illumination and rainy, this paper combine...

Through the analysis of velocity, spectrum of the multiwave methods of shallow earthquake exploration, this paper makes analysis on the barite ore nearby the downstream river bank of Xialuotuo River in Qianxi County Stone Township of Guizhou province. The research shows that (1) When the wave velocity...

The randomness and volatility of photovoltaic (PV) output brings difficulties to do real-time forecast. This paper proposed a new method called EMD-SVM-GA to forecast PV output real-time. Three steps were needed to carry out the method. Firstly, decompose historical PV output data sequence into several...

The main business model of taxies called "Roadside Beckon" adopted widely is inefficient. Passengers and drivers are ignorant of the location information of each other. The rise of various types of taxi Apps also have made an effort to solve the problem of "difficult to take a taxi". However, these methods...

The low thermal conductivity of phase change material (PCM) is the main resistance of heat transfer in latent storage system. Characterization of melting process in a PCM-based heat sink with plate fin type thermal conductivity enhancers is numerically studied in this paper. Detailed parametric investigations...

In the base station positioning system, complex environment will cause reflection and refraction, etc. When using ordinary TDOA positioning algorithm will lead to an inaccurate positioning result in NLOS (Non Line of Sight) environment. In order to improve the positioning accuracy, this paper introduces...

Multi-criteria decision making (MCDM) has been a hot topic in decision making and systems engineering. The Dual Hesitant Fuzzy Sets (DHFSs) is a useful tool to deal with vagueness and ambiguity in the MADM problems. In this paper, we propose some new dual hesitant fuzzy power aggregation operator for...

Abnormal event detection based on trajectory has been extensively investigated in recent years; however, problems remain when processing an incomplete trajectory that usually has abnormality in some parts of the whole trajectory and the rest are normal. In this paper, we propose a locality-constrained...

For HOG features’ characteristics of high accuracy and large amount of calculation, selected MultiHOG features instead of traditional HOG by means of adjusting the structure of HOG features and using Fisher selection criteria. For the further detection effect, coalesced LBP feature which good at texture...

According to the structure and motion transformation characteristics of five coordinate of machine tool through the establishment of mathematical model, get the coordinate transformation formula of rear processing, tool path, by using CATIA and other CAM software, tool path converted to machine tool...

To make the image details in smoggy and dusty weather clear without reducing the quality of clear parts, is the key point of outdoor static image restoration. This paper put forward an image enhancement algorithm that can handle haze and dust image at once. First, use self-adaptive white balance algorithm...

The dynamic behavior and flow field characteristics of freely supported structure elastic plates with large deformation subjected to axial flow are studied numerically. The structural dynamics equation is discretized by isoparametric displacement-based finite elements, and the motion of a continuous...

Recent years, China has gradually begun to promote the development of asphalt pavement with low carbon and environmental protection features in the field of asphalt pavement construction. However, at present, our country has not formed the corresponding asphalt mixture greenhouse gas emission reduction...

Fly ash is consolidated by cement and the new consolidation agent, and the two kinds of cube samples(40x40x40mm) used to consolidate the fly ash are made though the methods mentioned above; Comparing the strength of the samples for test resistance strength and flexural strength test after standard curing....

According to the problem of the soil thermal imbalance occurring in the ground-source heat pump system, a new kind of ground-source heat pump system with complementary functions is established. This system can be applied in different climate areas through rational controlling strategies. In the study,...

Cloud computing is a new computing model of network services. As the inheritance and development of SOA, it has become a hot issue in the internet field. Firstly, this article supposed the questions in the Equipment Support Information System Architecture based on SOA. Secondly, this paper analyzed the...

Waveplates are among the most commonly used devices for altering the polarization state of light, and have been widely applied in polarization analysis of high-numerical-aperture (high-NA) imaging systems such as polarizing microscopes and immersion lithographers. As the NA of an optical system is increased,...

Using IR-UWB technique to TT&C system can greatly improve the anti-interference performance of TT&C signal. Aiming at the IR-UWB signal using in TT&C system, its BER performance in single-tone interference is analyzed. At the same time, the effect on the anti-interference performance of each parameter...

Energy loss during the formation of high pressure water jet was investigated theoretically. Computational fluid dynamics software was used to simulate the high pressure water jet flow field produced by three kinds of nozzles, including cylindrical, conic and cosine nozzles. And the influence of the nozzle’s...

In the research about machine learning, classification is the problem of identifying to which of a set of categories a new observation belongs, on the basis of a training set of data containing observations whose category membership is known. In this study, the procedure and principle of resolving classification...

a new genetic algorithm is proposed in the paper. Different from other genetic algorithms, the diversity of gene locus is considered and a new mutation operator is proposed. The operator can suppress the survival rate of modes which tends to prematurity, and effectively ensure the diversity of populations....

This paper applied the matrix theory and graph theory to the properties of planar mechanisms and constructed incidence matrixes. A construction method of characteristic matrices was proposed, and links incidence and pair incidence matrices were also defined. Meanwhile, through the concept of main diagonal...

In this paper, overall planning graph, which is widely used in the process of equipment maintenance, is reinterpreted with the graph model. Then, this paper deeply discussed the various application of the graph theory model both in the equipment maintenance process and equipment purchase decision-making...

This paper will focus on Bouc-Wen hysteresis model to study the time-scale similarity of the hysteresis. Considering different hysteresis characteristics of Bouc-Wen model, this paper studies the time-scale similarity between the output curves of different hysteresis characteristics under the excitation...

High power single-phase PFC such as multi-level interleaved APFC or single-level APFC with multiple power devices in parallel is required for high-power household electrical appliances, communication power and other electric-equipment which are supplied by single-phase AC power source. This paper theorizes...

A new and simple distance relaying algorithm based on KVL for series compensated transmission lines is discussed in this paper. The fault impedance can be calculated accurately by solving the 3-order fault loop equations consisting of fault phase voltage, current, the differential and integral of current....

Inspired by biological systems, self-healing materials were achieved by incorporating microcapsules into matrix. Urea-formaldehyde microcapsules filled with EPA were prepared by in situ polymerization method. Surface morphology, size distribution, chemical structure, and thermal analysis of microcapsules...

Although traditional processing methods can be effective for removal of algal blooms of cells, also has the potential to provide a major breakthrough of microcystins in the course of normal operation. As a result, the presence of more advanced processing of algal toxins in drinking water treatment water....

The response to axial strain of a hollow core photonic band gap fiber(HC-PBF) is investigated. The fiber is designed to operate at 1550nm which have shown to be highly dependent on the exact fiber structure. The relationship between axial strain and confinement loss as well as refractive index is calculated...

Infrared thermography has been a very important nondestructive evaluation (NDE) in the detection of concrete due to its non-contactness, rapidity, capability of imaging large area. More generally, there are some frames in the infrared image sequence. It costs more time to read the information behind...

Gravity survey is an important research topic in geophysics and geodynamics. This paper analyzes the accuracy of EGM2008, the newest Earth gravitational model, in two areas in Shandong Province of China. By comparing the gravity anomaly data from the model with those obtained by a strap-down airborne...

Derivative peaking phenomena appears in the initial stage when the initial value error between the classical extended state observer (ESO) and system state variables is bigger. A general form of extended state observer with nonlinear hyperbolic sine function is provided. The stability of a second-order...

In the design of control system, if only the control precision is taken into account, the control energy may be too large, but in a real system, control energy is often limited. Based on this, the attack angle error and engine power are treated as optimization objectives, then the parameters optimization...

Aiming at the strict requirement of pointing stability and dynamic environment of optical spacecrafts with micro vibrations in reaction flying wheels or other attitude actuators, this paper presents a passive double-layer micro-vibration control concept. The proposed micro-vibration system comprises...

In the paper, an advanced Gauss pseudospectral method (AGPM) is proposed to estimate the parameters of the continuous-time (CT) Hammerstein model consisting of a CT linear block followed by a static nonlinearity. The basic idea of AGPM is to transcribe the CT identification problem into a discrete nonlinear...

This paper mainly introduces color images interpolation algorithm which based on bayer template. In order to estimate the missing two components in one pixel accurately, this algorithm selects gradient correlation between pixels to calculate them. The bayer image, whose resolution ratio is 5120*3840,...

In this study, a P300 visual spelling system was presented using a novel method to input Chinese sinograms developed on a Hanyu Pinyin-based method. This method transcribes a Chinese pinyin into an initial consonant and vowel component according to its mandarin pronunciation. In this paradigm, each sinogram...

The brain is a dynamic and complex network formed by hierarchical interconnections among functional regions and neural systems across lifespan. Recent studies using graph theory explore the functional organization of resting-state brains have coherently indicated many non-random topological properties...

Traditional collaborative filtering recommendation technology has lower accuracy and couldn't meet the actual needs. So we convert the recommendation problem into the classification problem. We introduce Logistic classification methods based on the collaborative filtering technology and determine whether...

On the basis of existing traffic status discrimination under normal conditions, considering the influence of earthquake disaster on road capacity, real-time discrimination methods of section and intersection under earthquake was proposed. Through considering factor such as road level, section capacity...

Distribution networks can emerge long-time over-voltage due to ferroresonance caused by the electromagnetic voltage transformer saturation under a certain condition, seriously impacting the secure operation of power system. Some distribution networks used 4TV method to restrain ferroresonance and achieved...

with the wide application of network technology and the continuous development of network economy, network security issues are also increasingly prominent, it gives the network itself and the information system based on network has brought great threat. Adaptive detection based on data mining is the...

From traditional to today's data network text documents, pictures, audio and video mainstream, the Internet is gradually changing the structure of the data, the data from the non-structured data, which are growing and a wide variety of unstructured data, the Internet data Storage management has brought...

In the vehicle energy management and battery management system, the parameter monitoring system of the battery is the important basis to ensure its operation. The new observation system for state of battery is designed according to the principle of storage battery and its charge and discharge characteristics....