In this paper, the implicit finite difference method is developed for the fractional wave equation with Dirichlet and fractional boundary conditions. The consistency and stability of the method are strictly provedbytheGerschgorintheoremandmathematicalinduction. Numericalexamplesshowtheaccuracy and efficiency...

A fully encapsulated Al2O3 dielectric is developed to improve device performance in multilayer MoS2 transistors. Compared with bottom gated MoS2 field effect transistors, top gated transistor with top Al2O3 dielectric layer and bottom Al2O3 passivation layer shows great electrical property improvement...

Transformer oil as an important mineral oil is widely used in power equipments and its fundamental properties can be obviously presented by the vapor pressure which is difficult to be accurately evaluated due to its complex compounds. According to the testing mechanism of thermal balance, a simple method...

The employment of similitude theory to establish similarity among structural-acoustic systems can save considerable expense and time, provided that the proper scaling laws are found and validated. In this study the scaling laws for structural-acoustic systems are developed and validated. The stiffened...

Aiming at the problem that the system of digital electro-hydraulic(DEH) regulation system is complex and difficult to analyze its condition, a method based on characteristic extraction and information fusion is proposed. By making RCM analysis, the indexes for quantitative risk evaluation of fault modes...

With the increase of mining depth, dynamic disaster is more severe, which is a serious threat to the safety of miners. Because of complex mine geological structure, and relatively junior safety facilities, tunnel collapse and other dynamic disasters are easily induced, which brought great difficulty...

The structure of large ribbed ring stiffened shallow spherical shell is widely used for roof design of gasholders and oil storage tanks. The FEM of scale shell structure is established and the static performance is analyzed. The grid verification and time steps verification are performed to assure the...

Aiming at the problems such as limited time, limited arms, limited tools, hard to faults simulation show and hard to speek the fault test theory and maintenance process, this paper designed the gun interactive virtual maintenance platform and analyzed the fault simulation. First of all, the three deriction...

The main circuit of inverter power transform fault mode analysis in the paper, using multiple support vector machine (SVM), implements the main circuit of inverter power transform fault diagnosis. In equipment fault diagnosis, online or offline to analyze the circuit, its running state, the learning...

In order to solve the real time stream forwarding problem of multi source video on heterogeneous networks, a set of efficient signaling request flow and forwarding algorithm is designed to realize the undifferentiated forwarding service and unified management platform for different vendors and different...

In this paper, the pressure model of an electro-hydraulic proportional variable plunger pump is set up through mathematical modeling, and the simulation analysis is carried out with the MATLAB tool. The dynamic response characteristics are obtained, which provides some reference for the research of the...

Modbus Protocol is commonly used in Building Automation System devices. Siemens compony with good quality and high quality services, is one of the largest supplier for Building Automation System in China, but Insight software of Siemens only provides OPC and BACNET Protocol for other brand building products...

Environmental, clean and sustainable new energy sources have been paid much attention by researchers all over the world due to the increasingly exhaustion of traditional energy resources and the worsening of the ecological environment. Wind and solar energy are typical new energy sources, they cannot...

Aiming at the optimal operation of single-stage pumping station in the multi-stage pumping station with small buffer pool, on the basis of the research work at the present stage of long-distance multi-stage pumping stations, the objective function , Head flow and other constraints within the single-stage...

Aiming at the operation control of adjacent pump stations in the multi-stage pumping station of a small buffer pool, a transient mathematical model of pipeline flow was established by hydraulic calculation in the pipeline to calculate the start-up time difference between pumping stations at different...

To make effective use of high-quality radial velocity measured by Doppler radar and improve the positioning accuracy of target trajectory, a combined positioning method with single Doppler radar and single optical theodolite is proposed which is based on target trajectory expressed by function, called...

With the advent of the big data era, the application of big data technology in the railway industry is becoming more and more widespread. Through the analysis and application of big data, the management level and economic benefits of the China Railway Corporation can be effectively improved. In order...

In this paper, based on the predetermined virtual trajectory, the reference yaw angle for lane changing was generated. From the dynamical model of front and rear wheel steering vehicle, considering the influence of sideslip speed, a track error model of vehicle for lane changing is established. By applying...

In order to meet the development trend of smart environmental protection platforms and smart environmental monitoring systems, this paper proposes the recommendations of unmanned intelligent detection and processing technologies to improve the level of environmental monitoring. The article discusses...

Compared with the transform domain video watermarking algorithms, the spatial watermarking algorithms have weak robustness, but they have high visual quality. To ensure the video quality and satisfy the robustness requirement, a robust video watermarking algorithm based on spatial domain is proposed....

Calibration flight is a technical means for the performance and accuracy inspection of TT & C equipment. It installs some cooperative objects such as transponder on the aircraft in order to simulate a access between the spacecraft and TT & C equipment, so as to complete some related test projects. The...

From the perspective of economy, society, and ecology, we study the impact of information networks on the utilization efficiency of cultivated land. Using the information entropy model evaluates the utilization efficiency of cultivated land from 2007 to 2016 in China, and empirically analyzes the the...

The energy-saving renovation of existing residential buildings in rural areas is a complex system project. The role of BIM technology in existing residential buildings in rural areas is conducive to the collection of information on the building of existing residential buildings in rural areas. It also...

With the continuous development and application of information technology, the continuous construction of digital campus and intelligent campus project in colleges, the number of data stored in the college campus environment has increased dramatically, and a big data environment in a college campus has...

The 3/2 unidirectional glass fiber metal laminates were developed using LY12-M aluminum alloy and HS2 high strength glass fiber prepreg by the hot pressing and curing progress. The fatigue crack propagation tests of LY12-M aluminum alloy plates and unidirectional glass fiber reinforced aluminum laminates...

To deal with the signing key exposure problem in fuzzy identity-based encryption systems with AND gates on attributes, we propose a fuzzy identity-based key-insulated encryption scheme with AND gates on attributes (FIBKIE-AGA). Our scheme is provably secure. Our scheme is (N-1,N)- key-insulated and strongly...

Because of the compromise of the security of the underlying system or machine storing the key, exposure of the private key can be an great attack on a cryptosystem. Key insulation is an important method to protect private keys. To deal with the private key exposure problem in attribute-based encryption...

To guarantee the OoS of delay-sensitive traffic and improve the routing performance of the aerospace network, the shortest delay routing protocol for delay-sensitive traffic is proposed. Base on the queue information and packet loss probability, the routing protocol can provide the shortest delay path...

To solve the signing key exposure problem in fuzzy identity-based encryption systems with ciphertext policy, we propose a fuzzy identity-based threshold key-insulated encryption scheme with ciphertext policy (FIBTKIE-CP) which is provably secure. Our scheme is key-insulated and strongly key-insulated....

With the continuous improvement of the manufacturing level in the aerospace, automobile, shipbuilding and other fields, higher requirements for the assembly precision and speed of the components in the manufacturing process are raised. However, the manual operation method is generally adopted in the...

The permeability testing technology is a kind of non-destructive testing method, which based on the change of permeability, can detect the stress concentration state and the degree of fatigue damage for ferromagnetic samples. The detection sensor based on the constant current source has higher detection...

Jumping robots have been a hot research spot, since they are playing an important role in the modern wars, aviation and exploration, due to their good ability in obstacle surmounting, excellent adaptability to the ground and strong adaptability to the environment. This paper presents a novel bionic locust...

This paper presents the ASIC design and implementation for micro-machined gyroscope, The ASIC interface is including an analog ASIC and a digital ASIC, and can afford driving closed-loop, On-chip reference generation, CIC and IIR filter chain, High performance MEMS gyroscope output detection. The two...

With the development of information technology, especially computer networks, remote acquisition based on the Internet has become a new trend of measurement and control systems. In this paper, a versatile and configurable data acquisition system for measuring engine parameters is presented using the...

Additional Smart Switch (ASS) is especially suitable for lighting power saving of existing buildings because its installation requires no wall damage and no rewiring. However, as a new device working in low light environment, it is a challenge for ASS to charge lithium battery with solar panels. This...

This paper presents a long distance transmission circuit of high precision micro-seismic signals for mines. This circuit implements current loop and isolation gate to improve the precision of mine micro-seismic signal acquisition and data quality. The test result shows that the transmission circuit can...

As a long-range precision guided high-tech weaponry, the cruise missiles have the advantages of strong penetration prevention capability, diversification of tactical use, and economical efficiency etc. After the Gulf War, many countries competed for research and develop the cruise missile. In this paper,...

Power transformers are key components in the stable operation of electric power system. Reasonable arrangements of maintenance strategy according to transformers’ working condition can decrease the loss lead by transformers’ faults. The dissolved gas analysis (DGA) is the widest technique used in transformers’...

According to the morphing requirements, this article proposes a morphing glide aircraft with high environmental adaptability. Based on Kane’s Method, six degree-of freedom dynamic model is built. The automatic disturbance rejection control technology is adopted to realize stability control of longitudinal...

Direct load control is one of the key technologies in demand response. Moreover, the security of control instruction and credibility of customers must be preserved in direct load control. Non-intrusive load control was used to simplify the process of customer credibility verification. A privacy-preserving...

Based on the safety operation requirements of petroleum special vehicles, a type of multifunctional virtual real-time general observation system is developed on the in-depth study of the well testing principle, on the in-depth study of the well testing principle, which can measure pulling force, tension...

The multi-walled carbon nanotubes combined with four polymers respectively were used as a sensitive layer of in the monolithically integrated gas sensor array. The multi-walled carbon nanotubes in the gas sensor array were added using a dip coating, and the corresponding polymer was added to different...

The evaluation of standard test blocks plays an important role in nondestructive test, quality of which influences the inspection and production activities. The weak magnetic inspection is adopted, which direct at the common defections including wracks and holes to achieve the quantitative analysis of...