6.5wt% high silicon steel is a pretty soft magnetic material applied in electrical devices. But it is hard to be fabricated in conventional rolling methods. In this work we report a laminar composite technique to obtain 6.5wt% high silicon steel composite plate and focus on alternative warm rolling and...

Based on theories of beam bending, a quantitative evaluation method for web rigidity based on aircraft structural part geometrical features and process features was proposed. Combined with the characteristics of cutting force of web features in aircraft structural parts and the basic theory of simply...

S part side wall surfaces programming is always a technical problem for the Manufacturing enterprise users, this paper proposes a method for measuring the accuracy of the S part side wall surfaces programing in the cutting process before, and can form a precision inspection report, provide the industry...

For gas-solid two-phase flow material suction and discharging process, the computational fluid dynamics numerical method was used to carry out numerical simulation through RNG turbulence model and Euler two-phase flow model. The material discharging system of a certain Powder material suction vehicle...

The hydrodynamic characteristics, such as the displacement, velocity, acceleration, resistance coefficient and attack angle of three kinds of projectiles are analyzed by numerical simulation. The small taper angle projectile has the smallest resistance coefficient and attack angle. The results of this...

Effects of ultrasound pretreatment on physicochemical properties of corn starch were investigated. The results indicated that the transmittance and solubility of the starch increases by ultrasonic pretreatment. The starch pretreated with ultrasound for 30 min showed the maximum transmittance, which increased...

In order to improve the anti roll performance of multipurpose portal crane, a new type of hoist structure is adopted. An additional anti rolling plane of V-shaped structure is constructed by adding four supporting rollers which can swing with the hoist to increase the anti roll performance of the hoist....

Three-section flapping wing is a new kind of bionic wing, which had better bionic performance compared to existing single-section and two-section wings. In order to realize it, on the basis of single drive mode, a novel mechanism was designed that can realize both flapping and double folding motions....

In view of the special situation that the shield machine cannot be removed from the tunnel when meets the cutter head, and it must be decomposed and disassembled before it can be taken out in blocks, needing to construct the three-dimensional model of the cutter head, and the structural statics finite...

The of sansha highway on saline soil area in Tarim basin, soak the formed asphalt mixture in a salt solution for 60 hours, Immersing Marshall test and freeze-thaw split test respectively, system analysis of test data, It is concluded that the asphalt pavement in the saline soil is the long-term erosion...

The first integral method is applied to solve complex Ginzburg-Landau equation in this work. The evolution solutions for the equation are obtained. This method is based on the theory of commutative algebra, which can be applied to nonintegrable equations as well as to integrable ones. The first integral...

Mushroom mycelia have been investigated as a new source of chitin for fabrication of nano materials. This work demonstrated the importance of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-mediated oxidation in developing the functional qualities of chitin nanofibers using Flammulina velutipes mycelia...

The physical model of low pressure pipeline of pre-mixed abrasive water jet system is established. Based on the software of FLUENT, the numerical simulation of heat transfer between low pressure pipeline of pre-mixed abrasive water jet system and low temperature environment was carried out through solving...

Some specific airworthiness regulations about the precision of the velocity, pressure and height measurement have listed and formulated here. Computation are done to get the exactly value of the requirements about static pressure residual installation error at a range of height and velocity.

A method based on gas chromatography-mass spectrometry (GC/MS) was developed and validated for qualitative determination of five amides in food contact materials. The five amides are acrylamide, methacrylamide, caprolactam, oleamide and stearamide. The linear detection ranges of the method were 5-100...

The best condition of hot air-assisted RF-heating treatment Aflatoxin B1 decontamination was 19.05% wb of initial grain moisture content with 80 °C for 20 minutes. Additionally, the RF-heating treatment also had the high efficiency on Aflatoxin B1 decontamination when applied under conditions: 80 °C...

Electrolytic codeposition technique was adopted in the deposition of Ni-Co-Al2O3 coating on the stainless substrate, using nickel alloyed with iron as the binder phase with Al2O3 as dispersed particles. The results indicated that the deposit with Al2O3 nanoparticles was level and compact; the crystal-planes...

Based on the principle of low coherent light interference of optical fiber, a new method for detecting the distance between the mirror surfaces of a compound lens is proposed. Firstly, a system based on the principle of low coherent light interference is designed. Secondly, the frequency calculation...

This paper focuses on the mainstream three image restoration method, which is based on image restoration technology, based on a priori smoothness of image inpainting, texture similarity based on a priori statistical prior of image inpainting technology, according to the most popular method for the image...

Based on the problem of abnormality of the pitch angle’s residual error in the dynamic calibration process of the Ka system, this article analyzes reasons of the problem from many aspects. It checks reasons one by one and finally determines the main cause of the problem. Through the parameter correction...

At present, most of the measurement and control communication services in the aerospace field utilize the S and C frequency bands. The usage of the higher X and Ku frequency channels is also increasing. However, as the frequency band resources become more and more crowded, the Ka frequency band necessarily...

A smart control component is a type of embedded systems, such as SoC, system on a chip. It may control various objects and build to internet of things, IoT. Bicycle sharing systems are popular and green transports in China. They can be set up based on IoT and smart control components. In this paper,...

In engineering design and experiment, the speed of DC motor is often controlled. The common way is to generate PWM wave through timer, and adjust the speed of motor according to duty cycle. In theory, the velocity is proportional to the duty ratio. But in practice, because of the resistance, friction,...

Aiming at the issue of constrained optimization problem of assignment for shipborne missile weapon, hybrid genetic algorithm has been proposed in this paper, which can get global optimization results of the assignment, and provide decision support for the assignment.

the optical transmitter and optical receiver composed by light. Two important indicators of the optical transmitter average optical power, extinction ratio of two important indicators and optical receiver sensitivity, dynamic range are analyzed, and the importance of their carefully introduced test method....

The job-shop scheduling problem (JSSP) is a typical scheduling problem, which belongs to NP-hard problem. This paper tries to solve the complex JSSP by translating it into Boolean Satisfiability Problem. Even though the representation of JSSP in SAT is not a new issue, the solution to the complex JSSP...

In this paper, we present an improved method for obtaining quasi-cyclic low-density parity-check (QC-LDPC) codes of larger length by combining some component QC-LDPC codes of smaller length. Large girth can be obtained by carefully designing one large girth component code of smaller length. The other...

In this paper, a new variable step size LMS algorithm based on cosine function is proposed. The weak signal is difficult to extract, so we constructed a new relationship between the step size and the error signal, which depend on the mathematical transformation of the cosine function, and also analyzed...

In this paper, we study the homomorphic techniques used in GSW fully homomorphic encryption scheme, and point out the drawback which prevents the GSW scheme from efficiency. In order to conquer the weakness of low efficiency, we propose an improved homomorphic technique. Through comparative analysis,...

In order to improve the uneven utilization of resources, electricity power loss and QoS (Quality of Service) in the cloud environment, a multi-objective VM (virtual machine) dynamic Scheduling mechanism is proposed. The VM in the cloud environment is dynamically managed via designing the strategy of...

The Radio Frequency IDentification (RFID) based Active Vehicle Positioning (RAVP) is a feasible and high precision positioning method for moving vehicle on road when someplace uncovered by the signal of GPS or some other satellite based positioning systems. In this paper, RAVP is introduced and the precision...

By design the program and control the corresponding hardware devices, to design a Stepping motor control system to control the rotation of the stepping motor. The software part of this system is programmed based on LabVIEW, and communicates with the ELVIS II platform via USB port of the computer, so...

To overcome the drawbacks of both traditional extension strategy analysis methods and traditional decision tree classification, an extension strategy analysis method based on decision tree classification was proposed. First, original data were obtained through basic-element theory and optimized by extension...

As the foundation of network cognition, management and optimizing, the classification of network traffic is making a significant difference in resource scheduling, safety analysis and future tendency prediction. Feature subset selection (FSS) based on machine learning plays an important role in classification...

The paper proposes a matrix converter using unipolar IGBT, which is composed of three-phase rectifier and single-phase inverter, and transforms three-phase AC into single-phase AC. The main characteristic of converter lies on the only use of the unidirectional power transistor and no need DC support...

3D film viewer is a kind of instrument that can display flat models that can display three-dimensional models. Its simple structure, clever design, and small size are suitable for large and small-format color or black-and-white flat pictures. You can view three-dimensional pictures consisting of perspective...