Advances in Engineering Research

Towards the problem of the time-varying AP signal strength degrades the indoor positioning accuracy in Wireless Local Area Network (WLAN), a WLAN indoor positioning method based on multiple mixed distribution model (MMDM) and Adaboost algorithm is adopted. Firstly, in order to describe the probability...

In marine accident disposal, the maritime sector of sea area's rescue abilities evaluation plays an essential role in improving emergency rescue abilities as well as optimizing the management, which can reduce similar occurrings. In this paper, Interpretative Structural Modeling(ISM) was firstly used...

In this article, a new planar array nulling approach which only adjusts the phase of the side elements was proposed. In this approach, pattern nulling problem was modeled as a constraint problem and solved by -self-adaptive differential evolution algorithm. Simulation results show that the proposed method...

This paper mainly focuses on the feed production line of a certain feed company in Jilin, the design of a segmented pig feed line under the concept of innovative thinking, and the large data technology, Internet of things technology applied to the production line, the overall design of the segmented...

The development of Cold Chain and Halal Logistics business is predicted to become one of the world's business opportunities in 2018. Indonesia as the largest Moslem's population in the world has a great opportunity to become the Hub of Cold Chain and Halal Logistics of the world. To establish the opportunity,...

The ground settlement under pipe jacking is one of the key factors affecting construction safety and engineering quality. At present, domestic and foreign scholars have carried out a large number of studies on the prediction technology of surface settlement through pipe piercing. However, most of these...

A narrow-wall slotted waveguide array antenna with low cross-polarization filter is presented. The horizontal polarization (HP) is the co-polarization for narrow-wall slotted waveguide array antenna, while the vertical polarization (VP) is the cross-polarization. High level cross-polarization reduces...

Aiming at the problem that fault feature of wind turbine bearing is difficult to extract, a new fault diagnosis method based on variational modal decomposition (VMD) and spectral kurtosis (SK) is proposed in this pa-per. Firstly, vibration signal collected from wind turbine is decomposed into several...

Our country is the largest producer of wheat and in the processing of wheat, the yield of bran is nearly 20% of wheat processing capacity, the only by-product of wheat processing to produce each year - the bran as high as more than 20 million t, which is a big resources. The main contents of this part...

Rock-fill dam compaction quality depends on compaction parameters and material parameters. Although it is difficult to gain material sources parameters at any dam surface location, the real-time quality monitoring technology of rock-fill dam construction provides for gaining compaction parameters of...

In allusion to the problem that the multisource remote sensing data are not fully used and the data processing efficiency is relatively low, the multisource data mining system based on the cloud computing service mode is designed according to 3-layer 4-mode cloud computing service hierarchy system. Firstly,...

How to determine the location of the video is the important aspect of video data analysis and date taken, the sun's shadow positioning technology is based on analysising the sun's shadow change to determine the video shooting place and the date of video shooting.

The effects of intercropping with accumulator species (Capsella bursa-pastoris, Cardamine hirsute and Galium aparine) on phosphorus (P) and potassium (K) uptakes of Galinsoga parviflora under cadmium (Cd) contaminated soil were studied through the pot experiment. Seven treatments were used in the experiment:...

Cellular automaton model has become an excellent tool for simulating real traffic flow, because of its efficient and fast performance in computer simulations. In this paper we investigate the two-lane cellular automaton traffic model considering lane-changing behavior under the Keep-Right-Except-To-Pass...

Reciprocity theorem is proposed to design and analyze R-2R based DAC, which can make the complicated design and analysis of R-2R based DACs simple. The detail of how to use reciprocity theorem in the design and analysis of R-2R based DAC is given. The 14-bit DAC designed by Reciprocity Theorem has performances...

In order to investigate the cage slip ratio, the dynamic differential equations of high-speed cylindrical roller bearing were built and solved by GSTIFF (Gear Stiff) integer algorithm. Cage slip ratio in hybrid ceramic cylindrical roller bearing and steel cylindrical roller bearing has been studied,...

Heating furnace is the key and core equipment in the petrochemical production plant, therefore using risk assessment method to effectively identify and control the possible risk is very important. In this paper, how to consider the heating furnace danger and operational problems in the HAZOP analysis...

Vibratory stress relief(VSR) is carried out by using mechanical eccentric vibration aging machine. It is the common method to remove the residual stress of the metal component, with energy saving, environmental protection, highly efficiency, low cost and other advantages. However, due to the limitation...

It is well known that the Logistic model is mainly used in epidemiology. The more common situation is to explore the risk factors of a disease and predict the probability of occurrence of a disease according to the risk factors. However, we found that the Logistic model is not only significant in epidemiology,...

With the development of precision engineering and precision instruments, the micro-nano platform becomes the important carrier in the precision positioning technology, which provides large torque and high precision. In this paper, a kind of large torque micro-nano platform is designed and created, which...

The economical insulation thickness of the secondary pump lines in the subway system was calculated and analyzed based on the established optimization model of the secondary pump water system and the principle of lowest thermoeconomics cost. The main influencing parameters of the optimal insulation thickness...

Finite element method is used for post-buckling analysis of pipeline usually. In order to study effect of interaction between pipeline and seabed, FEM of pipeline exposed on seabed is built based on ANSYS, interaction between pipeline and seabed is studied, as results show that critical buckling force...

Vehicle anti-theft alarm system using RFID technology in the region of the vehicle for security management and establish a vehicle intelligent anti-theft alarm and management platform, the vehicle to achieve the automatic import and export with owner identification, vehicle positioning, statistical statements,...

The emission permit system and carbon quota system should be concurrently implemented for fuel consumption. The emission license is used to distinguish the different uses of automobile. The differential quotas of CO2 emissions are implemented for production or living automobiles, urban or rural users....

Enzyme breakers have many significant advantages compared to the traditional oxidizer chemical breakers because of their substrate specificity, high efficiency and non-toxicity, thus enzyme have been widely used in the water-based fracturing fluids as guar gel breaker. However, there is an industry-wide...

Apply the centrifugal casting process to the preparation of hypereutectic Al-18% Si alloy cylinder liners. In-situ gradient composites of Al-18wt.%Si Alloy, which possess the microstructures of accumulated primary Si from outer layer to inner layer, have been acquired by changing the rotation rate of...

Photovoltaic power is increasingly concerned in the field of new energy. Photovoltaic modules simulation can provide theoretical basis for photovoltaic power system. In the paper, it is introduced that, construct testing model, draw output curve, set different parameters in the model, and process the...

Backlight and light uniformity technology are two key technologies for backlight module design of LCD. On the basis of discussing the advantages and disadvantages of the Intercalated LED traffic signs, backlight and light uniformity technology are creatively applied to the active light-emitting traffic...

the purpose of the paper is to design power parameters of snow plough and some relevant research of snow plough in order to improving transport efficiency of vehicles, improving winter driving conditions and avoiding accidents. The paper gives some common methods of snow removal and their advantages...

In this paper, in the neglect of the core of the magnetic hysteresis, eddy current effect and the core skin effect and based on the analysis and summary of previous experience, an analytical method to determine the parameters of the transformer's turn to turn short circuit fault is improved and perfected...

Presently, thermopile infrared sensors have been successfully commercialized in different application areas such as contactless temperature measurements and infrared detectors. In the process of designing the application circuit of thermopiles, circuit simulation is necessary to improve the efficiency...

The effect of the spoilers depend considerably on the lift and trim moment that change the floating condition of the ship and then influence the flow field near the stern and the resistance of the ship. To investigate the effect of the spoilers on on the ship resistance caused by lift and trim moment...

In recent years, the techniques of structural sensing and control are used to mitigate the effects of natural hazards on civil infrastructure. The objective of this study is to improve traditional structural sensing and control systems of civil engineering by applying the technologies of embedded system...

At present, the casualties and property losses caused by urban building fire are on the rise in China. Based on BIM technology, this paper analyzes the feasibility about building the indoor real-time intelligent linkage fire management system, besides demonstrates it from the technical level, and puts...

In the modern society, the idea of energy saving and emission reduction has gradually permeated people’s production and life. In order to achieve this goal, all links in all industries should focus on the implementation of energy saving control. And specifically, the solar LED street lamp based on microcontroller...

The hyperspectral cameras often have hundreds of bands, and their absolute radiometric calibration is the premise for terrain remote sensing applications. Using the hyperspectral camera carried in manned aircraft platform carry out field calibration experiment, and according to the reflectance-based...

The network protocols and data formats of several types of seismic digitizer are analyzed, and the development of a middleware is introduced. The middleware provide users with java APIs to implement communication with seismographic digitizers and data receiving, decoding, publishing and storing. It uses...

Saline soil water-salt movement results to subgrade diseases like collapsibility, salt expansion and secondary salinization in coastal areas with saline shallow water table. Column tests were carried out to study the regularity of coastal saline soil water-salt movement. Results show that coastal saline...

The ternary complex of Eu(Gly)2(Ala)3Cl3•2H2O(Gly = Glycine and Ala = Alanine) was synthesized and characterized by comparison of elementary analysis, chemical analysis, thermogravimetric analysis, and data with corresponding. The dissolution enthalpies of the EuCl3 •6H2O(s), 2Gly(s) + 3Ala(s) and Eu(Gly)2(Ala)3Cl3•2H2O(s)...

By analyzing basic requirements and characters of millimeter-wave radar signals, this paper proposed signal processing methods using Linear Frequency Modulated Continuous Wave based on FPGA+DSP. FPGA controls peripheral ADC and DAC to complete modulation triangular wave generation and radar Intermediate...

Because of distributed photovoltaic power generating a large amount of data in every second and in every node, to collect and handle the massive of data in the photovoltaic power system within the prescribed time, it puts the storage and processing of massive data forward higher request, and brings serious...

The micro-morphology, wettability and chemical composition of the moth wing surfaces were investigated by a scanning electron microscope (SEM), a contact angle (CA) meter and a Fourier transform infrared spectrometer (FT-IR). The micro-morphological models for hydrophobicity on the wing surface were...

In this article, a design of a laser micro displacement measuring system based on the spectral interference of optic fiber principle is presented. This system makes the transmission and interference of laser occur in a single fiber. At the same time, a kind of athermalization probe based on the wedge-shaped...

We use Monte Carlo method to analyze the unreliability performance on the neutron detector system in nuclear reactor. We make the simulation models of three exterior reactor neutron detection channels including source range, middle range and power range measurement channels, and the corresponding three...

In this paper, the prototype of the Tibetan language search system is built and the solutions to key issues for this model are proposed.The characteristics of Tibetan language of web pages are analyzed and extracted. The web page encoding are converted to standard Unicode, which permits for better recognition...

With the development of the smart grid construction, the size of the grid is growing, the business types and the demand are gradually increasing and the high standards of the time synchronization performance transmission put forward higher requirements. This article introduces the power time synchronization...

The physical condition of agricultural soils is the main characteristic of their stability in relation to anthropogenic activities. One of the main reasons that have a serious impact on the physical condition of agricultural soils and are formed on their agrocenosis is their artificial irrigation. The...

The clarification of the distributing disciplinarian and engineering properties of soft soil in Guyana Georgetown regions has important guiding significance for the design and construction of local projects. Based on Capital Airport Expansion Project, the physical and mechanical properties of the local...

In recent years, the rapid development of artificial intelligence (AI) has greatly promoted the design and manufacturing of intelligent medical devices. However, the system of AI, the variety of signals from sensors, and the cognition of bionic dynamic devices are too immature, and current research in...

Traditional risk assessment methods at construction sites typically rely on manual inspections. These assessments are static and primarily conducted before construction, making it challenging to respond in real-time to the constantly changing environment during construction. This paper proposes a real-time...

Katuk (Sauropus androgynus (L.) Merr.) leaf and its products, culturally have been used by lactation mothers in Indonesia to improve their milk production. A limited study examined the different processing/serving of the leaf to the milk releasing. This study aimed to explore the effectiveness of katuk...

Spinel Li4Ti5O12 material were prepared by ethanol-assisted hydrothermal method and sintered at different temperatures. It was found that all of the samples had cubic spinel structure without undesired impurities and the samples showed different morphology as the change of sintering temperature. The...

The mechanical model of mast of special rotary drilling rig for transmission line is established in this paper. The ultimate loads of mast of rotary drilling rig are designed for drilling condition and lifting drill condition, and the simulation of the mast is done under these typical working conditions....

In order to solve the problem of license plate recognition in a complex environment, put forward a combined with the feature of license plate color, gray features, geometric shape, a general method of license plate recognition, first of all according to the color feature of license plate of China, this...

Content Delivery Network (CDN) is a new kind of Internet content service system, which is built based on IP network and can provide the content distribution and service to satisfy the requirement of content access and application efficiency, the requirement of quality and contents order. The basic idea...

Traditional underground garage lighting control mainly adopts manual control mode, which usually keep most of the lamps bright for a long time. This way causes a great waste of electricity. To solve the problem, the underground garage lighting intelligent control system is put forward. On the basis of...

Investigations of powder alloys of the Fe- (30-36)% Ni system based on carbonyl powders are presented. When studying the microstructure of Fe-(30-36)%Ni alloys, it was found that an increase in the concentration of nickel promotes the coarsening of the average grain size of the austenite, and the grain...

In the construction waste output forecast, it is difficult for forecasting and reducing the accuracy of forecasting. In this paper, a method for estimating the yield of urban construction waste is built on the basis of building area, by using the ARIMA model to predict demolition area and the area of...

Large-scale distributed wind power connected to grid must be dispatched and managed by the provincial gird dispatch center. In order to unify representation of wind power equipment’s information and function in various applications, this paper extends the common information model of the wind plant based...

The fault tree analysis method of static reliability technology theory was applied to the marine main engine remote control system and a fault tree for the control system was constructed. After finishing the qualitative and quantitative analysis of the fault tree, an applied fault tree and a fault-finding...

With WCl6, C2H2 and H2 reaction system and Ar work gas, WC nanocrystallites were prepared by plasma chemical vapor deposition(PCVD). The properties of WCl6 and WC particles including chemical composition, morphology, size and structure of crystal phase were characterized by Transmission Electron Microscopy...

The solid bulk cargo transportation plays an important role in the carriage of goods by sea. Bulk cargo is any cargo that is transported in a loose form without any packaging in large quantities. Solid bulk cargo includes grain, ore, coal etc. Solid bulk cargo has some inherit natures such as having...

Monitoring soil moisture and pH levels is crucial for tracking the health of plants. Therefore, it is necessary to develop a device for measuring soil moisture and pH with the aim of plant monitoring. This device utilizes Long Range technology and consists of two nodes that monitor two different soil...

With the drastic changes in global climate, the frequent occurrence of extreme weather events has led to an increasing number of flood events, highlighting the crucial importance of accurate watershed runoff forecasting for disaster prevention, water resource management, and environmental protection....

In order to assess tactical and technical index of a certain type of missile warhead, calculated warhead muzzle velocity and damage capacity for using of theoretical analysis. Combined with the results, design the new tar-get emplaced scheme. To the particularity of warhead structure and measured data,...

Wheat flour were prepared to make aqueous pentosan and alkali soluble pentosan and then they were added to wheat flour in different proportions to conduct bread baking experiments to study its effect on the quality of the bread baking.

Detail components of nitrogen oxides (NOx) emissions, which is including NO, NO2, and N2O, from a national V heavy-duty diesel engine with selective catalytic reduction (SCR) were studied under different operating conditions by using Fourier transform infrared spectrum (FTIR) technology. Results show...

According to the United Nations, 1.6 billion people (one quarter of the world's population) experience water scarcity. Water use has been growing at twice the rate of population over the last century. What should we do to mitigate water scarcity we use Multiobjective Dynamic Programming(MDP) Model to...

An appropriate fatigue crack growth model is the key to accurately evaluate fatigue life of component. Researching on the McEvily model, considering the influence of elastic-plastic behaviour and crack closure, a modified elastic-plastic small crack propagation characterization model is proposed. The...

The traditional learning of physics experiment has the problems of tediousness and low efficiency. With the development and popularity of information technology, so in the light of the above problems, an information system for physics experiment had been designed for students to improve their learning...

A novel sulfur ion exchange fiber - thiosemicarbazide chelating ion exchange fiber (TSCIEF) was prepared by nucleophilic substitution reaction of chloramethylated polypropylene graft styrene (CPP-g-St) fiber and thiosemicarbazide, using anhydrous ethanol as swelling agent. The structure of TSCIEF was...

The phase transformation temperature and time of + 2 ß in Cu-Al alloy before and after 5Gpa pressure treatment were measured by differential scanning calorimeter, its activation energy and Avrami exponent were also calculated. The effect of 5Gpa pressure treatment on the phase transformation of + 2 ß...

This paper aims at establishing an accurate short-term traffic volume prediction method by introducing calculations and characteristics of triple moving average method, single exponential smoothing method, and double exponential smoothing method. Based on field data collected from intersections in Fuzhou,...

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...

Every effort has been made to break the chain of the spread of the COVID-19 virus. Starting from maintaining distance, wearing masks, washing hands, uniting body temperature, to invitations to participate in vaccinations. However, apart from vaccination during the COVID-19 pandemic, the need for jobs...

Traditional off-line line parameters measuring is complicated in operation and has poor applicability. And the symmetry of line parameters influences the choice of on-line measurement methods. Generally, it's is asymmetric. Therefore, the paper proposes an on-line measuring method of power frequency...

The commercial applications of NFC (Near Field Communication) have become increasingly mature. Many smartphones have become to carry NFC chip in default for communication. Warehouse management in the logistics industry has played a more and more important role in the current development of the electronic...

For rapid evaluation of composite girder beam bridges load-bearing capacity, to study the load-bearing capacity check computation method based on displacement influence line. First obtain measured displacement data of typical sections by the slow driving way, then calculate the measured generalized displacement...

Constrained optimization problems are very important as they are encountered in many science and engineering applications. A hybrid method based on modified augmented Lagrangian multiplier and biogeography-based optimization (BBO) algorithm is proposed to solve constrained optimization problems. The...

Phase-pure, monoclinic, and nanostructured FePO4 composites have been synthesized by a hydrothermal method at different waterbath reaction time and characterized by XRD, SEM. The results showed that calcination time have great influence on the FePO4 composite. When the waterbath reaction time was 7 days,...

Most of marine diesel engine faults is caused by the wear. So, wear analysis is particularly important. In this paper, we have got the wear state and wear mechanism of the marine Cummins diesel engine by analyzing the selection of two typical oil sample with the oil ferrography analysis technology, and...

The previous literatures generally study consumption level of the single urban or rural residents in Hainan.But there are few documents about the residents' consumption level in Hainan province. According to the the data in range of year 2003-2012,this paper analyzes and evaluates on consumption level...

The methods of reliability analysis for parallel-redundant system are different from the traditional two-state system, according to multi-state reliability theory, the design of the three-state electrical parallel-redundant system was optimized, and a mathematical model of the reliable degree for the...

Based on liquid fusion and atomic interdiffusion of TiB2-based ceramic and 42CrMo steel, the ceramic-metal laminated composites with interfacial 3D-network span-scale graded microstructures were achieved by combustion synthesis in high gravity field. The presence of respective atomic concentration gradient...

With the development of nanoscience and nanotechnology industry, nanomaterials have gone into the natural water and it may have some impact ecosystems. This article intends to use nano-silica and zinc oxide different sizes with different concentrations of dispersed in filtered seawater to study the effect...

The Bingham-plasticmodel has been widely used to predict the post-yield behavior of Electro-Rheological(ER) and Magneto-Rheological(MR) fluids. However, as the plastic viscosity is not constant under conditions of different flow velocity and applied field (Electric/Magnitude), the phenomenon of shear...

The charge density, electronic energy band structure and density of states of Au-doped armchair graphene nanoribbons (AGNRs) with both-edge are investigated using the local density approximation based on density function theory. Our results indicate the charge density is transferred and mainly located...

Near-singularity and far-filed storage in impedance matrix were two difficulties in MoM. In this paper, some simple methods, based on the Duffy transformation, were effectively used in dealing with the near-singularity. For the far part, AIM(Adaptive Integration Method) was used to reduce not only the...

LED lighting is being used for residential, commercial and industrial applications. It offers various advantages over incandescent bulbs, such as lower energy consumption, longer life, attainment of full brightness without need for a warmup time, and so forth. With the advent of these lights in large...

The control system of experimental equipment for electrical exploding wire opening switches designed in this paper includes two parts, i.e., the main control system and human-machine interface. The main control system is composed of a c8051f020 MCU motherboard and two pieces of IO expansion boards to...

In this paper, we established a model to discribe the how bathtub water temperature changed over time, and put forward a suitable way of adding hot water. We divided the bath process into three stages: cooling stage, heating up stage, and constant temperature stage. At the cooling stage and heating up...

In order to find the optimal scheduling, to ensure the global optimization, and to adapt to the dynamic environment, the adaptive capacity remote sensing data cloud platform scheduling strategy is proposed based on the cloud platform high score data storage model. The main contents are as follows. The...

Aluminum Conductor Composite Core (ACCC) is expected as an important conductor in Flexible Alternative Current Transmission Systems (FACTS) and High Voltage Direct Current (HVDC), compared with Aluminum Conductor Steel-Reinforced (ACSR), has the characteristics of high strength, high temperature resistance...

This design uses High Performance Capillary Electrophoresis (HPCE) to determine the Paeonol’s content in huangliansu tablets. Electrophoresis separation controlled conditions for uncoated fused silica capillary column (75 m×52 /60cm) injection height 7.5cm, and using a concentration of 40 mmol/L borax...

In order to improve the ability of fuzzy comprehensive evaluation of talents, this paper proposes a fuzzy comprehensive evaluation method which is the combination of qualitative and quantitative. Results show that the system can ensure the accuracy of the evaluation results, can meet the need of the...

Nanoscale bimetallic Fe/Cu mesoporous carbon supported alumina hollow ceramic membrane were successfully synthesized by spin-coating method. The morphology and physico-chemical properties of catalyst were characterized by XRD, SEM, TEM. The performance of the catalysts was evaluated by the adsorption...

With the complexity increases of the Advanced Public Transportation Systems (APTS), the risk of traffic crisis rises. Through analyzing the characteristic of public traffic safety based on APTS, this paper combines “3G” and ZigBee technologies to locate vehicles in time and get the information of exterior...

Taken the natural loess slopes in the Linfen area as the engineering example, analyze the relationship between the slope size parameters (height of slope, angle of slope), material parameters(soil cohesion, friction angle) and the stability safety coefficient of slope with different calculation method....

We report on multi-pulse dissipative solitons generation in all-normal-dispersion (ANDi) long cavity Yb-doped fiber laser with a cascaded long-period fiber grating as a spectral filter. The mode-locking is based on nonlinear polarization evolution. It was found that through either changing the pump power...

Through the analysis of the status quo of Shanghai dredging mud comprehensive treatment, combined with the domestic and international successful cases, and summing up the experience of previous engineering, puts forward the countermeasures and Suggestions of comprehensive utilization in conformity with...