Advances in Engineering Research

Switching function is a powerful tool for the research and performance optimization of converter, including voltage source converter, current source converter (CSI) and controlled PWM rectifier (CR). The paper proposed converter simplified model based on switching function, theory correctness compared...

We can get conclusion from experimental effect comparison of electrostatic spray and general pressure spray that electrostatic spray can reduce droplet diameter and narrow droplet spectrum scope as well as increase droplet evenness; influenced by electrostatic absorptive effect, droplet coverage rate...

Annealed SAE 52100 steel samples with different spheroidized microstructures were austempered to produce a bainitic+martensitic duplex microstructure. The effects of the spheroidized microstructure on bainite ferrite (BF) nucleation during austempering were discussed. Results show that the proportion...

Optical current sensor has a wide range of applications. The main factors that affect the practical process of optical current transducer (OCT) are the effects of birefringence, temperature and long-term stability. Optical current transducer (OCT) with thin slice type sensing head is designed in this...

Inverted siphon is a common conveyance structure in order to have a clear understanding for stress and deformation distribution of inverted siphon structure, researching mechanical characteristics of inverted siphon structure. Precast inverted siphon has advantage of quick construction speed, easy control...

Fuzzy reasoning algorithm is the key content in fuzzy logic research, and is also the basic theory in fuzzy control. With the deepening of the research, currently a lot of fuzzy reasoning algorithms are proposed and applied in electrical appliances and many industrial productions. But its basic research...

Homogeneous aqueous suspensions of graphene have been prepared by chemical reduction of graphene oxide in the presence of poly(3-aminophenylboronic acid) (PABA) in alkale solution. The graphene sheets in thus prepared suspensions can stable several months and can be switch to aggregated state with lower...

The single point incremental Forming is a versatile process with a good future for the products of mass customization. The process eliminates the design and manufacturing of a die, which is also unique for each and every individual part. The incremental forming operation can be done using a Computer...

Marine energy generation systems have gained extensive attention in the past decade. The greatest advantage of tidal current energy over other marine energy sources is its lower dependence on the weather. Tidal stream generation system consists of an energy capturer, a shaft, a gearbox to reach a high...

The perovskite cathode material of SrFe0.9Sb0.1O3- (SFS) was prepared by glycine-nitrate process (GNP). The SFS oxides sintered at 1150,1200 and 1250 §C for 10 h were crystallized into a single phase perovskite structure, respectively. The effect of sintering temperature on crystal structure, conductivity...

Because of the non-uniform cluster-head election in the classical clustering algorithm, some nodes maybe exhaust energy prematurely so that it is not fit for large-scale wireless sensor networks(WSNs). In this paper, a distributed clustering routing algorithm based on fuzzy weight attribute degree(FWAD)...

The development of new energy auto in Yichang can give full play to the cost advantage of’ capital of hydropower’.Using the‘parallel import policy’and adopting CKD to organize production can rapidly cultivate production conditions and consumption market. Under the restriction of high standard emission...

In the process of phase estimation of digital signal, windowing will cause the problem of spectrum leakage. In view of this problem, this paper studies the solution of using appropriate window function to reduce spectrum leakage. And then analyzes the influence of different window functions and window...

The complex {[Cu(C9H8O4)(DMSO)2(H2O)2]·(DMSO)2}n (C9H8O4=2-Methyl-1,4-benzenedicarboxylic acid, DMSO = dimethyl sulfoxide)was synthesized by reaction of Cu(NO3)2·3H2O. The crystal structure of the copper(II) complex has been determined and studied by X-ray diffraction. The complex is monoclinic, space...

At present, a large number of professional diesel databases and systems could support all kinds of unified management and retrieval applications based on the diesel research data, but the actual working environment exists three problems: (1) Data scattered in different databases and not conducive to...

In the design of switching power supplies of high power factor in communication devices, high-quality PCB board design is the most significant aspect in solution to electromagnetic compatibility and reliability of the entire system[1]. The article introduces the principles and methods of PCB board design...

This paper studied the dynamic relationship between China's carbon emissions and economic growth from1960 to 2009. The results indicate that as the economy growed, carbon dioxide emissions has increased steadily since 1960.The use of environmental Kuznets curve model to simulate the relationship of per...

Quality monitoring is a critical way to ensure quality of missiles and is valid guarantee for capability of missiles. The paper studies the constructive problem of a system of systems of life cycle quality monitoring for land force strategic missile in terms of the characteristics of missile equipment....

When conformance testing of distributed network protocol, there exit controllability problem and observability problem in NP-FSM model described distributed test system. Based on the detailed research of the distributed test system, this paper proposes a single input / single output, single input / multi...

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...

Audio feature extraction is a very important technique in the field of sound processing. It extremely impacts the effectiveness and correctness of sound recognition, sound verification, etc. It is a computation intensive stage in the whole sound recognition process, which is a challenging for acceleration....

The development and application of industrial robots is the inevitable trend of the social development of science and technology in 21 century[1].This report mainly describes a new humanoid biped robot based on STM32 SCM and sensor system.It is characterized in that the structure is light through the...

CFRP is widely used in the area of reinforcement because of its many advantages, but ordinary methods of past can not give full play to high-strength properties of CFRP.Therefore, new technology of concrete structures strengthened with prestressed CFRP emerges as the times require. At the same time,the...

Armored equipment is an important component of the army, armored equipment scientific research is the main way for equipment support. Modern war with the advanced nature of the armored equipment, reliability, security and protection are also put forward higher requirements, improve the quality of armored...

This paper analyzes the "fishing vessel with a diesel-type spectral identity management measures" to implement the former fishing diesel chaotic management Phenomenon, through the Ministry of Agriculture announced 570 fishing boats with diesel-type spectral data analysis, with power, speed is statistical...

This paper presents the analysis of multilevel technology for electric vehicle BLDC motor Drive. The topology of multilevel inverter including three-level, five-level and seven-level inverter are discussed, and the general method of SVPWM for multilevel inverter are given. Based on the proposed vector...

The rise of electric vehicles (EVs) has transformed the automotive industry, offering an eco-friendly mode of transportation. However, the success of EVs depends on efficient and reliable battery charging systems. With the global shift towards electric mobility, the demand for advanced charging tech...

Enzyme immobilization is a potential technology for many different industrial. Alkaline protease (AP) microcapsules were prepared with sodium alga acid (1.47%), AP (0.78%) and anhydrous calcium chloride (2.93%). The mixture was placed for 1h and the encapsulated rate of microcapsules achieved 96%. The...

Although in situ denitrification has been well documented in landfills, few studies have paid attention on the denitrifier in landfills who dominates this process. In this study, a strain P-1-5 was isolated from landfill by Pseudomonas selecting medium and identified as Pseudomonas stutzeri by 16S rRNA...

Arch dam is a beautiful engineering structure, it has good mechanical properties, it is widely used in water conservancy engineering, in order to have a clear understanding for mechanical characteristics of arch dam structure. Using the finite element method for concrete arch dam of shuangchong reservoir...

The article provides detailed and accurate design basis for building plan, studies a new theory and technology for the designers by researching from the spatial essentials to mathematically logic of spatial configuration and by using the method of spatially quantitative description, such as convex space,...

The hot spring resources of Heyuan are very rich. In recent years, the hot spring tourism development is quickly. But there are many problems in the development process, For example, hot spring development pattern is similar, lack of cultural characteristics and brand effect. In addition, staff quality...

In the process of infrared thermal image segmentation of distribution equipment, efficiency of the segmentation is low; it is easy to appear the over-segmentation phenomenon and cannot better segment the anomaly region of infrared thermal. To solve this problem, starting from the basic principle of the...

Facing the problem of the difficulty to sort the radar signal under the complex battlefield environment, this algorithm can sort the unconbentionality radar signal of jittered PRI or staggered PRI in real-time effectively with high-accuracy, using the principle of Set Pair Analysis and taking the entropy...

Meta-algorithm in GIS system changes the single and fixed mode of mathematical model creation in GIS system, which adapts to the new development demand. This paper focuses on analyzing mathematical model library system and GIS mathematical model library system under meta-algorithm, classifies models,...

Based on AMESim, this paper focuses on the modeling and simulation of a particular bus. Setting a certain speed for the bus, and then take braking. Through analyzing the process of braking energy recovery and launching of the bus, a series of simulation curves are obtained. And then, it is concluded...

In the background of energy saving and environmental protection, the lightweight of automobile is the goal of its development .The use of ultra-high strength steel as the structural parts and safety parts of car body is to ensure the lightweight of automobile under the premise of ensuring the safety...

In this paper, the DSTFT algorithm is optimized from the point of view of improving system demodulation speed. For the sliding windowing process, this paper gives two fast implementation schemes of DSTFT - recursive and code-sliding. The recursive algorithm of rectangular window and all - pole window...

In order to increase the crack monitoring sensitivity of a rosette eddy current array sensor, a crack-monitoring system was established, and an equivalent sensor model was developed by COMSOL. Then the influence of the sensor's topology on its sensitivity was investigated. The results indicate that the...

A network topology is how computers, printers, and other devices are connected over a network. It describes the layout of wires, devices, and routing paths. Essentially there are six different common topologies you should familiarize yourself with: Bus, Ring, Star, Extended Star, Hierarchical, and Mesh....

Using the UG software, the new type arc tooth synchronous belt and pulley solid model are created. In view of the synchronous belt and pulley transmission belongs to the multi rigid multi flexible coupled hybrid multi body system dynamics problem, carry out the flexible treatment of synchronous belt...

Urban parks are one of the important parts of public infrastructure and have the function to improve residents quality of life, therefore, one of the primary issues in urban planning is to ensure to meet residents demands for the quantity and spatial distribution of parks. In many cities, some localities...

The present work reported and discussed the results of investigation of employing nano-ZnO and general ZnO (AR grade) to prepare Ni0.15Cu0.35Zn0.5Fe2O4 ferrites. The samples were prepared by using conventional ceramic processing route and sintered between 1150-1250oC. The comparison of sintered samples...

The phase composition of raw coal in Liupanshui Dawan coal mine was analyzed by XRD, and the Hg content of raw coal was measured by atomic fluorescence spectrometer. The results showed that the Hg content in the coal increased with the ash increasing, which indicated that Hg had a certain inorganic affinity....

With deep-processing material of surface resources as soil substrate, the experiment of soil spray sowing was carried out on expressway slope. The results show that taking surface soil of fine particles and compost product of surface organic plant residue as the main soil substrate for slope soil spray-sowing...

The original image from infrared image system is low contrast and bad display. The parameters of typical linear transform arithmetic are achieved by experience. This paper proposes a new piecewise linear transform arithmetic based on histogram statistic and describes the architect of the hardware design...

In vehicular ad hoc networks, the typical problem broadcast storm always happen when vehicles are usually located quite densely within the range of radio transmission. In the paper, a novel emergency message broadcast game is proposed and the game takes nodes’ density and link quality into account,...

As a renewable energy, ethanol from lignocellulosic biomass has developed technologically in many ways. Effective pretreatment can enhance the enzymatic saccharification of cellulose by removing lignin and hemicellulose from raw material. Different alkaline pretreatment technologies were studied to find...

Dietary fiber obtained from mango peel (MPDF) by fermentation with lactic acid bacteria and ultrafine grinding was treated by dynamic high-pressure homogenization (DHPH). And the effect of DHPH conditions on composition and physicochemical properties of mango peel dietary fiber was investigated by determining...

Bifurcated pipe belongs to complex spatial structure, and when it bears the inner and the external water pressure, the bifurcation structure enters in complex stress state. Dongjiang Hydropower Station is located upstream of the Xiangjiang River tributary in the southeastern territory of Zixing, Hunan...

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...

With the continuous development of Web technology and the sustained popularization of the Internet, the security problems of the Web has been attracting more and more attention from the network workers. According to the OWASP (Open Web Application Security Project), XSS (Cross-Site Scripting) has been...

This paper proposes an improved PI control strategy for series-compensated wireless power transfer (WPT) systems to achieve robust constant-voltage (CV) and constant-current (CC) outputs under dynamic load conditions. The control framework incorporates a frequency-domain optimization algorithm to mitigate...

The present research aims to identify the critical issues of plant inefficiencies caused by plant wastes and safety issues. The study was conducted at a medium-scale cement refractory manufacturing special application cement. The research involved waste identification, waste analysis, and waste elimination...

A novel approach to organic-inorganic asymmetric particles through the co-assembly of block copolymers (BCs) and magnetic Fe3O4 nanoparticles (NPs) in solution is demonstrated. When 11-mercaptoundecanoic acid (MUA) modified Fe3O4 NPs and an amphiphilic block copolymer polystyrene-b-poly (2-vinylpyridine)...

Molecular Communication as the most potential methods to solve the communication in nano scale, for its derived from nature, and it becomes more and more prevalent. Though molecular communication happens in three dimensional situation, there are also some situation that are in the one dimensional situation,...

To integrate DIgSILENT/PowerFactory into the core computing tool of the high-level application platform for dispatching operation and planning analysis, this paper studies the automation technology of importing online grid models to DIgSILENT and exporting calculation results to DIgSILENT. Based on IEEE9...

The teaching resources in grid environment is distributed, heterogeneous and dynamic characteristics, for the massive teaching resources, resource organization and scheduling model is formulated via the characteristics of grid technology, the grid resources according to the specific rules of unified...

The mathematical model of anti-twist braided wire rope structure is the basis for studying the mechanical problems of wire rope. According to the forming principle of anti-twist wire rope, the structure and dimensional characteristics of wire rope are analyzed. Applying the differential geometry theory...

Based on the analysis of the characteristics of cold metal transition welding technology and the welding problems of the thin plate and dissimilar materials, this paper summarizes its applications in automobile industry. Cold metal transition technology can effectively solve the problems of burn-through...

In this paper, based on the multi-body dynamics simulation software, RecurDyn, virtual prototype model of a tracked mobile robot has been built, and with the RecurDyn interface connected to the Simulink control software, it was realized to build a control co-simulation platform of the tracked mobile...

Electricity metering equipment automatic testing detection pipeline has been widely used in most provincial company of the State Grid in the past two years. Sichuan electric power corporation metering center first developed a fully compatible pipelines, the compatibility of robot is one of the difficulties...

The study discussed the feasibility of CLUE-S model in Panjin in two different scenarios. Results showed that driving forces of land use in the model could simulated the land use in Panjin well, including slope, aspect, distance from river, density of population and so on. In the simulation in Panjin...

The No.4 bridge of Erdos Wulanmulun River city is a steel-concrete composite beam of cable stayed bridge. The Twin Towers bridge with double cable planes, tower adopts steel bridge tower. This paper introduces the design of structural steel pylon pier anchor and computational analysis of the situation....

Carbon nano fiber (CNF) was modified by acid oxidation and maleic anhydride (MA) graft in current modification. The CNF filler surface properties were characterized by energy dispersive spectrometer (EDS) and X-ray photoelectron spectroscopy (XPS). In addition, the properties of epoxy resin with modified...

Service-oriented new software system development has gradually been proposed and gets rapid development with the emergence of Web services. Service oriented architecture (SOA) makes changes in creation and development of deployment application system, and will become the effective way to solve enterprise...

In order to realize the utilization of kinetic energy of micro natural energy, a kind of rotary booster is proposed. Through adjusting the length ratio at both ends of the lever, the force value is magnified by times and the rectilinear direction of force is transformed to the rotary direction with lever-type...

Network countermeasure is an important kind of combat operations in information condition, so how to implement network countermeasure simulation in simulative training applications is a crucial problem to be resolved. Therefore, the paper first proposed the architecture of network countermeasure simulation,...

We propose a node local resource aggregation index and then we also propose a virtual network embedding algorithm based on this index. Simulation results show that our proposed algorithm outperforms other embedding algorithms in virtual network request acceptance ratio, long-term average revenue and...

Based on higher order contact meshing theory of conjugate curvature, to establish normal tooth profile model of a new tooth profile double helical synchronous belt transmission. Finite element analysis software is used for new composite double helical synchronous belt out the stress analysis of variable...

In this paper the issues of impervious performance based on fly ash clay are analyzed in detail. The specimen preparation experiment and variable head permeability experiment are introduced. The experimental results of this paper can provide reference for practical engineering application of fly ash-modified...

In this paper, the software of DeST-h was used to simulate the energy consumption of a residential building in Anyang,henan province, based on the comparison of external-wall with different insulation thickness.By analyzing the investment costs of exterior insulation material and the operation costs...

Nitrogen-doped nano-sized titania N-TiO2 photocatalysts were prepared by sol-gel process followed by ultrasonication.The photocatalytic decomposition of methyl orange in aqueous solution was used as a probe reaction to estimate their photocatalytic activities.Applying means of XRD,TEM and UV-Vis DRS...

This paper propose a method to study the dynamic characteristics of two-phase flow though the signals which collected from acoustic emission. With the digital processing to extract the feature of time domain and wavelet energy to analysis. the characteristic of flow. At last, get the relationship of...

The operating status of transformers directly affects the safety of entire power grid. Therefore, it is essential to monitor a variety of transformer fault and ensure the normal operation of power grid. The multi-frequency ultrasonic technique was proposed in the thesis and which utilized hundreds of...

Baiyinhua Reservoir is located in Oumulun River, Ar khorchin banner in Inner Mongolia. The irrigation area of design is 53600 mu, and it is a medium-sized reservoir which is given priority to with irrigation. This article gives the stress and deformation distribution during construction and operation...

The fundamental purpose of this paper is to present the difference between strategies for extraction of reference compensation currents for harmonic mitigation in a non-linear load. APFs are used to compensate for the harmonic current generated by non-linear loads. These harmonic currents are produced...

In the process of heating for materials, ordinary PID control methods cause the high temperature overshoot, which damages the structure and properties of the sample. In views of the large thermal inertia under the vacuum system, A PID control based on dynamic temperature assignment (PID-DTA) was proposed....

In order to study the stress distribution features of the surrounding rocks a long the circle tunnel after the roadway excavated and the radius size of there leased circle, first analysis of the stress distribution characteristics of the surrounding rock, on this basis, circular tunnel for the elastic...

In this paper, the influence of serial resistance Rs and shunt resistance Rsh for PV cells are studied. The series resistance Rs has a great influence on the output characteristics of the PV cells. Therefore, it is particularly important to solve the value of Rs for the model of solar cells. Rsh is very...

This paper proposes a novel foot-pad omni-directional locomotion interface, establishes planar walking algorithm for it in detail. The proposed locomotion interface allows users walking omni-directionally in a virtual environment, which can improve users’ immersion characteristic significantly. The...

This paper aims to design a distributed grid simulation system dynamic voltage restorer means to solve the problem of dynamic energy security in case of equipment operating in the electricity voltage sag or interruption. Means the use of "DC - AC" and "AC - DC - AC" dual structure, control system uses...

From the theoretical analysis of the primary energy consumption of refrigeration system, energy saving rate and value, combined with the application of specific case, the absorption refrigeration system and the compressor refrigeration system in Combined Cooling, Heating & Power Generation (CCHP) system...

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...

PHB is similar with non degradable plastic which is widely used in most properties. It is supposed to be an excellent substitute of traditional petrochemical plastics because of its biodegradable character. However, the production cost of PHB is much higher than that of traditional plastic. The substitution...

In this paper, in view of the stretcher transshipment transport stretcher part of car design modeling and simulation analysis, according to the design requirements for design transfer stretcher and with the back, legs Angle adjusting mechanism. AnyBody software is used to the human body back, leg movement...

Load balancing is one major cause of the false traceroute link problem in the Internet topology measurement field. In order to improve link inference correctness in the presence of load balancing, the impact of per-packet load balancing to link inference in the context of symmetric and asymmetric load...

Invulnerability study is an important research content of complex network. On the basis of analysis and comparison of other traditional inadequate measurements of invulnerability, natural connectivity was used as the invulnerability measurement of network topology and an optimal network topology model...

In the era of big data, it is an important means to building user portraits and helping enterprises to implement precise marketing through comprehensive analysis of multidimensional data. Aiming at the problem of lacking detailed mining analysis and one-sided user attribute analysis, a method for modeling...

Presence of echo is one of the challenges when using ultrasonic for transmitting data through the steel. The model of multipath channel in the ultrasonic through-steel communication system is described and the method of echo cancellation is analyzed in this paper. This method applies a pre-distortion...

This paper presents a universal model for dynamic system based on geometric modeling methods. The model uses time series that implicates dynamic characteristics as study object, uses geometric modeling methods as basic ideas, and uses embedding time element in NURBS model as the key, for representing...

In order to improve the ultrasonic test penetration in the concrete members, a kind of high-power ultrasonic pulser-receiver was designed. With the instantaneous high-voltage pulse by capacitor of charging and discharging, the transformed voltage can reach a peak of 800v. A specific receiver was designed...

The traditional method in solving geotechnical engineering problems can only come to the theoretical solutions. The triple-shear unified elasto-plastic constitutive model is proposed based on the triple-shear unified yield criterion, and the secondary development to ANSYS with the complicated practical...

Security and privacy are widely recognized as important requirements for access and management of power information system data. In this paper, we argue that power information system data need to be managed with customizable access control in security classification dimension. We present a role-based...

Taken one of the rising national strategies of Xijiang river basin as the study area, we first established the sustainable utilization index system of water resources assessment. Then, the analytic hierarchy process was applied to calculate the index weights. And the composite index method was applied...

A design of system of video monitoring cars based on IEEE802.11n protocol. STM32 chip as the control core, image data gathered by free driver USB camera, was used to compression coding, which was sent to video receiver by the use of RT5350 wireless router module with WIFI. Then the user could send control...

At present, the State Grid verification pipeline can only work for a single metering equipment, and exists some outstanding problems, including utilization rate, clear line time, the project investment cost and occupation area and so on. This paper introduces fully compatible integration verification...

Through the analysis of the Putaohua oil layer of Xingnan area’s geological information, sums up the fault form in section and the main form in the plane. Analyze the influence of different fracture dense belt for oil and gas migration and enrichment of sand body ,and controlling action on hydrocarbon...

Steel lined reinforced concrete penstock is commonly used as a hydraulic structures in recent years. Because of the complex structure of the penstock, so far no design specification can follow at home and abroad. In this paper, general finite element calculation software is used to conduct nonlinear...

By using GIS and RS technologies, coastal suspended sediment concentration (SSC) of Yellow River Estuary were retrieved and analyzed in two periods, normal period (NP) that means before 2002 and water & sediment regulation period (WSRP) that means after 2002, to reflect the temporal and spatial change...