Wireless sensor nodes have the advantage of being low-cost easily deployed and of good mobility. However, the significantly high attenuation caused by soil is the main challenge for the communication of between the aboveground node and the underground node. In this paper, experimental measurements have...

Underwater acoustic sensor networks (UWASN) is an important tool of human to monitor the ocean. However, the existing routing has problem of low packet delivery, the long time end to end delay and the redundant packets. A new routing IGDAR is proposed in this article. The IGDAR select candidate node...

Non-ferrous metal, crystal material, infrared glass and so on are widely used in the infrared optical system, they can be cut directly by single point diamond turning, so single point diamond turning technology was soon applied to infrared optical elements processing, which can be understood that infrared...

The corrosion of related electric field is an important exposure source of warships in sea water, the spread distance of low frequency part can be several kilometers in the sea water, which has a promising application prospects in aspects of remote detection and development of underwater weapon fuze....

Aiming at the problems of traditional BP neural network in fault diagnosis of equipment, the genetic algorithm is introduced to optimize the network, and the fault diagnosis model of equipment is established. The modeling ideas and considerations are introduced in detail, and the simulation calculation...

In this paper, the lightning arrester explosion accident and transformer short-circuit accident in power supply system were analyzed in detail. It was found that the operating over-voltage caused by the frequent operation of the 35kV high voltage switchgear was the main cause of the accident. It was...

In view of the current situation of the storage battery temperature and deformation monitoring is not satisfactory, a flexible sensor signal detection technique for monitoring the temperature and pressure of the battery is presented. The principle and characteristics of the flexible sensor are introduced,...

This paper introduces the application of micro oil ignition technology in Opposed Firing Supercritical Boiler, and the design of the sequential control logic. According to the characteristics and operation mode of micro oil ignition, compared with big oil gun control scheme, the paper study the micro...

The solar street lamp monitoring system was designed based on ZigBee wireless communication technology in this paper. The design constructed communication network based on ZigBee wireless communication technology, which was included database, B/S architecture combined with geographic information system...

In order to ensure sufficient terrain information for the underwater terrain-aided navigation, a global path planning method based on Ant Colony Algorithm (ACA) is proposed. The concept of feasible region is firstly defined, and then pheromone representation, heuristic functions and pheromone updating...

In the process of blood transfusion in artificial liver, the liquid level of blood inside the dropper must be monitored in real time to ensure the stability and safety of transfusion. According to the requirement of the liquid level detection, we designed a kind of ultrasonic liquid level sensor based...

Seal type hydraulic dumper is frequently used in helicopter rotor system to prevent ground resonance and air resonance. In this paper, we modeled the seal type hydraulic dumper with the Hydraulic Component Design database in AMESim and analyzed the impact of driving frequency and gas content of the hydraulic...

This research overview discusses the venture analysis and performance evaluation of the government emerging industry venture capital guide fund. This paper bases on the domestic and overseas research overviews of the government emerging industry venture capital guide fund. Then this paper discusses the...

A kind of distributed array structure micro channel heat sink is studied in this paper. The fluid height and the ratio between fluid and channel are optimized by computational fluid dynamics (CFD) thermal-mechanical coupling method. The typical heat sink is fabricated by UV-LIGA and non-silicon MEMS...

Traditional inspection robots which equipped with analog camera normally have two channels to transmit image information and control signal. However, this double-channel method causes difficulties in miniaturization of robots. In this paper, we proposed a new scheme in which WIFI technology is utilized...

A PLC (Programmable Logic Controller) control system for a stacker translation stereo-garage is presented in this paper. Firstly, the overall scheme of the stacker translation stereo-garage is proposed according to user requirement, and the structure scheme and automatic parking and taking flow of a...

This paper presents the simulation of PV system using Multisim and compare the simulation results with the parameters of the actual solar cell, to analyze the errors. For further study, we prove that a DC-DC boost converter can achieve balance and we can figure out the upper and lower limit value of...

It is discussed that the experimental output profile of 1064 nm beam of a laser diode (LD) end pumped Nd: YVO4 laser. It shows that the output power is highly dependent on the focusing position of pump light inside Nd:YVO4 crystal. Given the same beam waist (1mm) and the same cavity length (58mm), the...

A laterally-driven MEMS inertia switch was designed, and its off-axis sensitivity was analyzed and evaluated. The dynamic response process was simulated by ANSYS finite-element model, which indicated that in the designed inertia micro-switch, the distribution of serpentine spring symmetry, the proof...

A effective method for comparing the thermal conductivity of insulation film was developed here. The thermal simulation on Ansys software indicated that different materials at same thickness exhibit different temperature distribution in this system. Base on this, the new measurement structure was fabricated...

To improve the strength of the polyimide (PI), composites with SiC whiskers doping in the polyimide matrix were prepared. In order to avoid the conglobation of the whiskers, SiC whiskers pre-dispersed in the ethanol. SiC whiskers/PI composites were prepared by high-speed mechanical stirring. The resulting...

This paper mainly describes the design, fabrication and test of double planar thin film inductor. The thin film inductor has a sandwich structure, which consists of a double-square spiral planar Cu coil between top and bottom Ni magnetic thin films on a glass substrate; it is fabricated by dry and wet...

In order to solve the difficulty in testing space controller, a general measurement system is designed and integrated. Based on LabVIEW, the multi loops model of producer/consumer is chosen to program which makes the interaction and sharing of data came true. Using the structure of state machines, the...

In this paper the problems about the practical application of cable sheath circulation online monitoring is analyzed XLPE cable sheath circulation integrated monitoring terminal is designed circuits design principles and parameters of monitoring terminal contains current transformer, circulation detection,...

Although the current intelligent oilfield construction is based on the network and other technology such as the internet of things, but it is embodied mainly by individual system, based on fixed localized platform, or established solutions for a particular user. Operating system, remote decision-making...

Financialsystem exhibits a high degree of interdependence. Different typesof interconnections exist among financial agents, such as loanguarantees and cross share-holding. Financial contagion coulddiffuse along the interconnections and lead to wide spreadof risk. Thus how to effectively maintain the...

In the research field of robotics, as can be seen from the description of the classification of the robot, the autonomous robots should have their own knowledge. Generally, a robot’s knowledge refers to the knowledge in the knowledge base of the robot systems. However, Can a robot understand its knowledge...

According to the different characteristics of load values of the user’s request,this paperpropose a Nginx cluster load distribution strategy based on the load information request. According to the relationship between the average load information of server cluster and the threshold value, combine with...

In quantum communication and quantum computing, the Bell state acts as an important role. For two qubit of discrete variable, Bell state is composted by two orthogonal to each other's physical state of a physical system. For the physical system consisting of continuous variables, a scheme is presented...

In view of the current electronic equipment modular direction development, timely understanding of electronic equipment running status, to prevent failures and shorten the maintenance time, adopt the method of fuzzy membership function, and to quantify the fuzzy state of the equipment, introducing the...

Program checking is an interesting and challenging problem. Many kinds of programs can be formulated as polynomial programs, expressing the same meanings in a mathematical way. Moreover, with the mathematic framework of semi-algebraic systems, the polynomial based model checking can be applied directly...

In the passive location system, the traditional maximum likelihood estimation (MLE) location method can’t eliminate larger error or wrong parameter automatically, and does not apply to multi-target situation. A novel location method named as position information field for target (PIFT) location method...

When building a radial basis function (RBF) neural network with the traditional clustering method , the expression of the network is often affected by the distribution of training samples.The ability of learning and generalization are hard to achieve the optimum.In this paper, it presents to through...

Nowadays, the definition of health is not only the absence of disease, but both physical and mental health. Loneliness as an important measure of mental health has become a topic that can not be ignored. In this paper, we study the problem about loneliness of individuals can be automatically recognized...

Hbase is a kind of non-relational database providing scalable technology methods and platform for managing big data, but it can only query through the primary key. This paper proposes a secondary index mechanism based on the heat value which derives from H-Index, a secondary index scheme of Huawei. It...

With the rise of LBS (Location Based Service), lots of user recommendation system based on location trajectory analysis has emerged. Finding periodic behavior is essential to analysis user’s activity. In order to solve the problems with trajectory outliers and human intervention in periodic parameters,...

Intelligent agriculture is the inevitable development trend of modern agriculture. Sharing the sensing data of agricultural production activities on internet to make it to be found is the premise of agricultural products supervision and agricultural decision. However, the relationship between agricultural...

With dongba culture researches increasing year by year, there needs to be a highly efficient classification method to classify research achievements creating conditions for further study. Aiming at the shortcomings of the traditional mutual information method, giving full consideration to the factors...

In the case of user rating data is very large and sparse, the effect of traditional collaborative filtering algorithm in use recommendation is unsatisfactory. In this paper, a collaborative filtering algorithm based on user clustering and time stamp is proposed. Which first clusters the users according...

For the uncertain change characteristics of transition matrix parameters in complex FPN system,this paper presents a parameters optimization algorithm based on CDEDPSO.This article focuses on the weight, threshold and certainty of FPN optimized model and these parameters are analyzed, improved and simulated...

Quasi-Cyclic Low-Density Parity-Check (QC-LDPC) codes require less hardware resources due to the quasi-cyclic structure of parity-check matrices. In this paper, two improved methods for constructing QC-LDPC codes are proposed. Firstly, in order to make sure the masked LDPC codes have flexible code rate...

A new method for proving to be an isomorphism was presented. Based on the method, an algorithm was presented to prove to be an isomorphism, which can be implemented in the GP/PARI.

Let p and q be prime with and ,and let . If , then is a congruent if and only if the equation has rational solutions. And The Birch Swinnerton-Dyer conjecture predicts that the rank of is one.

Energy detection is one of the classical methods for spectrum sensing in Cognitive radio (CR). Previous research on energy detection is almost based on single time slot, while the communication process of the primary user (PU) is hardly completed in one time slot. In this study, the authors consider...

The research of visible light communications(VLC) has became a focus of wireless communications in recent years. In this paper, the channel coding technique for VLC systems were studied. According to the characteristics of VLC channel, RS codes were designed to correct the burst and random errors. The...

On the basis of detection fault line research about abstraction transient fault information in ground system, the fault line could be selected because of its high frequency transient current. After we discussed and analyzed the wavelet criteria of the detected signal in theory, the significant amplitude...

In wireless sensor network, in order to effectively reduce the influence of the complex environment in node localization accuracy, based on trilateral plane positioning algorithm, this paper proposes an algorithm about the mobile anchor node and fuzzy information (Mobile Anchor Node Localization on Fuzzy...

To achieve the management systems of vocational school’s training mode for sustainable development, we developed it with the .NET and using ASP.NET, SQL Sever2000 database and so on for designing, by building a information system of sustainable personnel training mode, analyzing each component of management...

The direct current motor (DCM) is widely applied in industrial field. The presence of brush and commutator in traditional DCM result in sparks and noise, and may reduce working life of the motor, therefore, the research for brushless direct current motor (BLDCM) becomes hot. When the motor running, the...

Premium Power Park (PPP) is a technical solution to solve the regional high-quality power supply problems. The technical optimization method is the premise of planning and constructing. To meet various power demands of different customers, the concept of process immunity time is lead up in this paper....

With the rapid development of national economy, electric energy which is considered to be an important energy source has obtained wide application in all sectors of society. Electric energy meter is regarded as the main instrument in current measurement and economic settlement. Its accuracy has a direct...

This research aimed at the present situation of the University digitization, using level analysis method to screen the digital evaluation factors. It established the digital campus evaluation model of colleges and universities , to expect that the application of digital campus can play its proper role.

Because of the linear CCD is used in non-contact dimensional measurement, especially at the edge of the detects object, the edge of the object can not be well coincided with the pixel edge of the sensor, there will be some errors. Currently, in order to reduce this errors, there are some edge subdivision...

The deficiencies of array elements causes the decrease of angle survey precision when detect low-angle estimation. In order to solve this problem, this paper transform the data missing matrix which isn’t meeting the condition of the SIP into appropriate one based on the MC theory by using the Hankel...

The HMM_DC algorithm is proposed based on the Hidden Markov Model to detect the community in dynamic social network. The algorithm transforms the community detection problem to get the optimal status chain in Hidden Markov Model with considering the history information and characteristics in dynamic...

A kind of image segmentation method with two-dimensional cross entropy was proposed based on the artificial bee colony algorithm to overcome the large amount of calculation and long computing time. Firstly, the principle of two-dimensional cross entropy threshold segmentation was analyzed. Then, the...

Emoticons are widely used in the network text, which has enhanced effect for the author's emotional experience and semantic representation. Effective identification of the emoticons in the network text has great significance to sentiment analysis, public opinion survey and commercial investigation. Through...

A nonlinear and parallel fluid code is developed to solve the full space-time domain coupled two-fluid plasma and Maxwell equations and is used to investigate the parametric decay instabilities (PDIs) of the inhomogeneous plasma. Under the laser plasma parameters of nuclear fusion, the threshold power...

Algorithms based on Khatri-Rao (K-R) product improve the degree of freedom (DOF) of virtual arrays and thus more source angles can be estimated. However, the estimation accuracy is not satisfying. In this paper, a method considering spatial sparsity (SS) of sources in K-R subspace is proposed to estimate...

This paper presented the meter reading scheme based on automatic switching between two local communication channels of power line carrier and micro-power wireless. Firstly, the structure of the meter reading system based on automatic switching between two local channels of power line carrier and micro-power...

Saliency detectionhas been widely studied in computer vision. In this paper we propose a two-steps method combining contrast assumption and ranking technology to detect saliency region. Firstly, We use the traditional contrast assumption to find foregroundcues. Then we rank the nodes with labeled contrast...

On the background of information and energy interconnection, the whole power system generated a huge amount of data with diverse structure, complicated sources and large scale from both cyber devices and physical components, which is a typical cyber-physical system (CPS). These data exhibit data feature...

This report analyses the current typical non-contact On-Load Tap Changer(OLTC) thyristor products, poses the circumfluent calculating formula, and points out the main problems existed. The paper also introduces the highly-performed and highly-reliable thyristor OLTC technology and products. Compared...

According to the characteristics of electronic evidence,the storage mechanisms of Android phone and specific operational problems encountered in forensic work are summarized,this article presents a relatively standardized evidence-based policy Android phones, hoping to improve the Android mobile phone...

According to the local contrast and global distribution of an image, this paper detecting salient images through bottom-up data driven . First, this paper using adaptive segmentation method divided image into non-overlapping images, improved Block and Chessboar distance from a linear combination to replace...

The straight-shooting is the torpedo’s important shooting method and its leading angle is key factor. Based on the theory of the torpedo straight-shooting triangle, modeling and discussing the torpedo leading angle variety caused by the target observation errors in straight-shooting. And simulations...

Maximal frequent itemset mining is a very important method in mining frequent itemsets, which will reduce the mining meory cost and supply a better understanding of the rules generated by the frequent itemsets. In this paper, we review the maximal frequent itemset mining algorithms over a stream, which...