Advances in Engineering Research

The vertical trajectory characteristics of near-space hypersonic glide vehicle are researched in the paper. Firstly the model of 3-free degree is established; for skip-glide trajectory, the influences of initial velocity, height and fight path angle to trajectory are analyzed by the numerical simulation...

Welan gum is widely applied in environmental admixtures due to its good thickening and rheological properties. There is an obvious competitive absorption when welan gum coexists with polycarboxylate superplasticizer. Effect of different modified welan gum pellets on the properties of cement and concrete...

The excavation of city subway pit breaking the original balance of the soil, affecting the safety of existed buildings and the surface subsidence of construction are important and direct factors which react to construction impacts. Using the Gray Relational Analysis Theory, through monitoring measured...

A tapered polarization maintaining photonic crystal fiber based on dual-mode interference is proposed for measuring liquid refractive index. The sensing principle is based on the interference between LP01 and LP11 modes in the photonic crystal fiber. The output intensity distribution of the two modes...

The objective of this article is to apply a program for ecological indicator screening base on a new method, which is the Comprehensive Method for Water Ecological Index Screening (CMWEIS). CMWEIS is based on the Principal Component Analysis (PCA) and Delphi Method (DM, a kind of expert investigation...

Many results have showed that the great diversity of bacteriophages in various aquatic environments, including marine water, freshwater and paddy water, but few studies was about the genetic diversity of bacteriophages in the wetland. To better understand the genetic diversity of bacteriophages communities...

To improve the performance of one exhaust system, in the article, a exhaust system in the market was conducted by the stress analysis and optimization of the hanger. Firstly, the 3D model was built by Catia and a FEM model was built by Hypermesh , and then the calculation of the free modes were done...

First of all, the paper would be introduce the study on portable virtual instrument technology based on the Android platform, then particularly in virtual oscilloscope as an example, focusing on the overall design of the system. Stratified in different signal acquisition system in order to meet the demands...

During the global warming, the duration of drought is increasing and the impact on forest ecosystems could be further intensified. It is always a concern that diverse forests respond to different duration of drought differently. In this research, the non-parametric Wilcoxon test was used to compare the...

A highly stable 8T SRAM cell is presented to improve the Static Noise Margin (SNM). The proposed 8T SRAM cell uses a single-bit line structure to perform read and write operation. The design enhances the write ability by breaking-up the feedback loop of the inverter pair. It also improves the read stability...

There are many difficulties to establish a real satellite receiver in a laboratory environment.The satellite simulator can replace the satellite receiver to simulate the satellite signals.In this paper, it analyses the advantages of the satellite simulator in the time synchronization detection and consider...

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 paper studies the impact of linseed cake in the diet of Russian Heavy Draft growers on their productive and physiological indicators. For the experiment, the Russian Heavy Draft growers were divided into three groups. The reference group of animals had basic diet, the 1st test group had the diet...

The Ultra Wide band (UWB) antennas play an important role in UWB system. As a crucial component of the UWB system, the UWB antennas affect performance of the system significantly and have advantages of low profile, low power consumption and integration easily, so they are widely used in communication...

This article introduced under the challenge of global climate change, advocating the importance of green building materials application. Green building is the one of the most effective way to energy conservation and emissions reduction. Analyzed the climate change on building engineering, construction...

Currently, the tradable allowance system, which is a market based environmental policy, is being introduced in China. Under this system, enterprises are given much flexibility in decision making. In this article, the authors constructed decision strategies and models for enterprises and analyzed the...

As global energy demand grows and concern over climate change increases, solar photovoltaic (PV) power generation, as a clean and renewable energy source, has garnered widespread attention and is rapidly developing. Due to the relatively low stiffness of PV modules, their light weight, and large spans,...

Aimed on the problems of control of the whole SMT production line, the technology of material management and control of the production preparation execution in SMT production line based on digital recognition is proposed. Firstly, the framework of this technology is constructed. Then the three key technologies,...

A robot is a positioning control can be automated and can be reprogrammed to change the multifunctional machine, occupies an important position in the industrial automation production. Hydraulic drive system can be pneumatic drive, it may be electrical control and other methods. With sensor technology,...

The black-dot defects on galvanized thick sheet surface after galvanizing line, which is the traditional construction materials with 1.5mm thickness, was studied. Characterizations of the research samples were carried out using a SEM in order to understand the causes of the defects. The results showed...

A low design of condition-triggering shift registers on Silicon for display was proposed, which has a new circuit structure of input driver clock. The design only allows certain clocks to enter the register, so that the dynamic power has been reduced. It has been demonstrated that the proposed structure...

This paper analyzed the demand and characteristics of power grid communication, stated the features and applications of service-oriented architecture, studied the scenario and method of service-oriented architecture in the power grid communication, proposed a method to organize the power grid communication...

To evaluate the regional water resources carrying capacity according to the importance of each related factor,we establish a model and sort out indicators that can characterize the ability of a region to provide clean water for its population. The water deficient ratio and utilization ratio of water...

This paper analyzed the contents, pollution levels and their seasonal variations of Pb in the early stage of the reform and opening-up in Jiaozhou Bay, China. Results showed that Pb contents in surface waters in spring, summer and autumn in 1979 were 0.37-0.99 " "g L-1, 0.25-1.52 " "g L-1 and 0.29-0.75...

A novel adsorbent was prepared by grafted the Dibenzo-18-Crown-6-Ether (DB18C6) on D564 resins and characterized by Thermogravimetry (TG) and Fourier Transform Infrared Spectroscopy (FTIR). Adsorption of Sr2+ from aqueous solutions was investigated in batch method as a function of contact time, concentration...

The addition of another electrochromic component has been considered to be an important way to obtain multicolor film. Herein, we fabricated the composite films containing polyoxometalate (POM) clusters, auxiliary materials and polyelectrolyte on quartz and FTO substrates by layer-by-layer assemble method...

In order to improve the surface compatibility of bamboo pulp fibers (BPF) with plastic materials, enlarge the application fields, BPF macromolecule which was modified by 2-bromoisobutyryl bromide (BIBB) was chosen as the initiator. Copper(II)bromide/ N,N,N ,N ,N - pentamethyldiethylenetriamine PMDETA...

The internal prestressed conduct grouting condition is the key problem in prestressed concrete girder bridge throughout the whole service life. Howeverm, there is no set of certain mature and reliable detection technology. This paper based on the impact echo theory, through the precision acquisition of the impact echo time of the prestressed pipe under the condition of different grouting condition levels. By establishing the relationship model between the grouting fullness degree and the reflection time of the impact echo, to provide the quantitative and accurate of measurement of the full degree of prestressed pumpness detection technique, and service for the maintenance and rehabilitation of bridge engineering....

In this paper, the kinematic model of the mobile robot is built. Based on Backstepping time-varying state feedback method and Lyapunov theory, the time-varying feedback control law were designed and the global asymptotic stability is proved. Numerical simulations were conducted to show the effectiveness...

Mango puree is a semi-finished product processed from mangoes. This mango puree is usually preserved using the freezing method or the method of adding preservatives. But actually this mango puree can also be preserved by the drying method. The advantage of the drying method over the freezing method is...

In this paper, the active neutral point clamped inverter (ANPC) based active power filter (APF) is presented. The APF with instantaneous reactive power theory simultaneously eliminate harmonic current of source and neutral line current caused by load, and feed the active power to the source from photo-voltaic...

Fracability, a key indicator for reservoir stimulation assessment, is directly related to shale gas production and resource extraction efficiency. In this study, a comprehensive fracability evaluation model for the shale reservoirs of the Wufeng-Longmaxi Formation in the Sichuan Basin was developed by...

Retrieval-Augmented Generation (RAG) systems rely on efficient and accurate retrievers to supply relevant context to large language models. While dense retrievers achieve superior semantic recall, they are computationally expensive, limiting their practicality in latency-sensitive or resource-constrained...

The choosing of dam location is a very important part of water conservancy project. Through the scientific dam location selection, the quality of water conservancy project can be improved [1]; In order to introduce the process of dam location selection. Take an example of the Kariba dam, picking 24 possible...

Combining with the trend of social development and the literature, this paper illustrates the importance of informationization construction in hospital, especially its role in the modern hospital management and the social and economic benefits. The hospital information construction is the inevitable...

The recycling and transportation of urban living waste is one of the common basic tasks to ensure the normal operation of the city. Aiming at the acceleration of urbanization and the increasing quantity of living waste, this paper proposes an "Internet +" urban garbage classification recycling and transportation...

A new laboratory method has been suggested for synthesizing coesite in the Earth’s crust by considering the similar characteristics of local collisions and shearing strength between the earth’s plates and the high-energy mechanical ball milling (MBM),combining the high static pressure and high temperature...

Polymer flooding, as a promising method, can deliver conventional oil-displacing agents effectively to contaminants distributed within heterogeneous soil. In this study, combinations of polymer (xanthan) and common remediation agents (potassium permanganate and/or sodium persulfate) were used for polymer-enhanced...

With the development of the Internet .this article introduces a method of time window,that can be used to collect as much legit data as possible via creating new time windows inserting data into the time windows and destroying time windows. The number of time windows maintained depends on practical applications....

The explosive development of the IT field, the number of structured and unstructured data is increasing in geometrical. According to this tendency, the importance of Big Data and analysis techniques has received attention. Also, using these data a number of cyber-crime has occurred. So, the security...

Al-20Si alloy in-situ synthesis composites were prepared by using in-situ synthesis technique. By means of the German ZEISS Axioskop2 optical micrograph, the microstructures of Al-20Si alloy in-situ synthesis composites were investigated. The evolvement rule of Mg2Si microstructure was analyzed. The...

In order to reduce the digital zenith camera identify stars data that exist in the gross error influence on astronomical calculating, improve positioning accuracy. The mapping relation between the CCD image coordinate system and the celestial tangent plane coordinate system is established by using the...

The usage of website is increasingly important for business in general including aviation industry because it provides additional benefits for the business. That is the reason why managing and maintaining a good website is very important in this digital age. One method to measure website quality was...

Gas is a molecule that is not bound, formless, invisible, and can change to liquid or solid at a certain temperature. LPG gas is a factor that often occurs the cause of LPG gas fires is the gas regulator that is not installed properly. The purpose of this study was to determine the performance of the...

The aim of this study is to investigate the experimental analysis of the thermal characteritics of a thermal energy storage (TES) unit that combines both sensible and latent heat stored in a bed. A TES unit is created, constructed, and integrated with a constant temperature bath to evaluate the functioning of the storage unit....

Amidst the innovation of science and technology and the demand for new forms of transportation, intelligent driving has become a critical topic in modern automotive industry. Stable and efficient environmental recognition and monitoring serve as essential foundations for realizing intelligent driving....

Airbnb has transformed the world travel and accommodation market by offering flexible and low-cost short-term rentals. Yet, comprehending the intricate price and demand patterns and customer behavior remains a significant challenge among hosts, tourists, and investors. In this study, an Exploratory Data...

Based on the current complex climate environment, this paper reviews and analyzes the application of artificial intelligence (AI) and 3D printing technology in energy efficient vehicles. It first introduces the current background of global warming caused by increasing carbon emissions, in which the production...

There are many parameters affecting the design of the main beam of radial gate, which makes designers feel confused. Based on the planar system design method, the three-dimensional finite element numerical simulation method is adopted; that is, considering the spatial cooperation of the components of...

Taking the rural dwellings in the areas with rich solar energy in Zhongwei of Ningxia as a research example, through on-the-site survey and field-test, the paper analyzes the effects of space layout, the construction of envelope and the method of heating on winter indoor thermal environment. The results...

Due to the loss of information about image and the interference of noise, blind deconvolution is an ill-posed problem. In this paper, we study this problem based on the algorithm of Krishnan et al.[1], which uses a normalized sparsity measure to solve the problem. By assuming the random high frequency...

SiO2/S coating was prepared on the surface of HP40 specimen with different thicknesses of coke. The influence of coke on the coating deposition and thermal shock property was studied. Scanning electron microscopy, X-ray diffractometry and X-ray energy dispersive spectroscopy were used for microstructure...

Polyurethane prodrugs with different drug contents were synthesized using polycaprolactone, hexamethylene diisocyanate and ciprofloxacin. The thermal analysis of the materials was carried out by DSC and TG. Results showed that the crystallinity of the materials reduced as the drug contents increased...

It may lead to low frequency oscillation in interconnected power grid if part of the lines of power transmission section are disconnected. Reducing the output of generators in sending end urgently is an effective measurement to restrain oscillation, and different control strategy may lead to different...

Compression tests of Mg-4Al-3Ca1.5Zn-1Nd-0.2Mn Magnesium alloy as-extruded were carried out on the Gleeble-3500 thermo-mechanical simulator. The compression testing temperatures were in the range of 200–350 at intervals 50 , while the imposed constant true strain rates were 0.001, 0.01, 0.1, 1 and 10S-1.True...

To establish a green fluorescent protein (GFP)-based cellular model for screening GLP-1 receptor ligands from Traditional Chinese Medicinal herbs. A eukaryotic expression vector pCMV6-GLP-1R-GFP was constructed and transfected into U20S cells. A stable expressing GLP-1R-GFP U20S cell line was established...

With the arrival of big data and Cloud computing era, it is a huge issue of how to organize the application services. Organizations and companies usually have plenty of applications range from web, mobile or middleware, etc. Because the quantity and diversity of services, they are delivered through different...

On the basis of previous research, the nonlinear finite element analysis of the light frame shear wall is made with the elastic-plastic behavior of wood and shear failure of connecting part. The nonlinear parametric analysis is carried out for lateral resistant performance of the light frame shear wall....

This paper aims to apply the uniform design method and explicit dynamics finite element analysis to improve the permanent deformation of an on-road bicycle frame which undergoes the drop-frame impact test. Eight dimensional parameters of bicycle frame are selected as the control factors. The uniform...

It is one of the anticorrosion measures of reinforced concrete that the concrete surface coated with organosilicon hydrophobic agents such as silane. In this paper two kinds of water cement ratio (W/C) 0.4 and 0.6 of concrete were selected, silane (isooctyl triethoxysilane) and epoxy resin coating were...

Jinan city China has a special topography. It can be described as “south flood and north water logging” during the strong rainstorm events. In order to describe this characteristics, an urban rainstorm water model is constructed in this paper. This model can consider not only the inundation but also...

This paper presents an expansion loading technique for metal cylindrical shell to effectively achieve a one-dimensional, high-strength and quasi-static tensile loading on shell sidewall. A quasi-static axial compression is firstly loaded on the filling polymer via rock triaxial testing system (RTTS),...

Aiming at the high voltage circuit breaker three-phase permanent magnet brushless DC motor, this paper studies the motion characteristics of the motor operating mechanism under different control strategies. Considering the switching operation process of high voltage circuit breaker, we established the...

The separation of elements is achieved by ultra-performance liquid chromatography system for Aflatoxins, the use of a closed-loop feedback control system is to produce a stable continuous wave light source, fixed wavelength of 360nm illumination light source onto the separation of elements, resulting...

The pot experiment was conducted to study the effects of intercropping with cadmium (Cd) tolerant plants (Arenaria serpyllifolia, Clinopodium confine, Ranunculus sieboldii and Plantago asiatica) on growth and Cd accumulation of Brassica chinensis. Compared with the monoculture, only intercropping with...

In view of the situation of home security problems and the defect of security products in the domestic market, a new intelligent home anti-theft alarm system is designed by using of ATMEL SAM R21 microcontroller multiple and various detection sensors and central alarm processing unit. The network communication...

Arti cial neural network (ANN) are widely applied in machine learning and artificial intelligence. But ANN usually requires large data throughputs and induces high power consumptions. This paper proposes an accelerator design guideline for ANN with full consideration of the hardware scale, performance...

The article gives detailed analysis of theoretical statements that exist nowadays and practice experience in the sphere of grinding materials to the nanosize. There is a technological scheme of the production of nanomaterials by the traditional method, which consists of two phases of grinding: pre-grinding...

Abstract-It is of great importance to early detect abnormal brains, in order to save social resources. However, potential of wavelet decomposition is not fully explored and widely used. The wavelet-energy was a successful feature descriptor that achieved excellent performance in various applications;...

Based on the exploiture of turbine blade super cooling technology, porous medium is installed in a new kind of cooling configuration with cooling tunnels. Experiments and numerical simulations are carried out to investigate the thermally driven heat transfer rules in the new kind of cooling configuration...

The importance of static electricity in today’s world is known, which can initiate some new novel technologies of high electric drying, high electric thawing and electroosmosis dewatering in electrostatic application. However, their dangers are also evident. In addition, a large number of electrostatic...

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...

The addition of NH4+ in NaCl which could simulate the marine atmosphere environment contaminated NH3accelerates the corrosion process of 7075 high strength aluminum alloys. The acceleration effect is mainly promoted by the reaction process of aluminum alloy cathode. This is due to the fact that NH4+...

This paper take reconstruction of spectral reflectance use Hyper-spectral Imaging System (HIS) as the main research object. A new method based on the relative colorimetric assay and dark field correction for spectral reflectance reconstructing be proposed to meet the need of high fidelity color reproduction(Hi-Fi)...

The device is mainly for the banking, public transportation and other financial industry users design, through the control of the motor to achieve different types of coins automatic screening, automatic clearing function, put forward a new coin separation device. Innovation is mainly reflected in: the...

Bangladesh’s deforestation and land degradation pose a threat to biodiversity, calling for automation to facilitate effective reforestation. The research introduces Seedobot, a smart, locally manufactured forestation robot to improve seeding efficiency through machine learning. Built with locally sourced...

E-sports is becoming a trend among gamers so it makes game providers serve good products and services to attract customers. Like other businesses, having loyal consumers is important for game providers. Unfortunately, the literature on gamer loyalty is still scarce and loyalty in one industry cannot...

This paper realizes the localization method base on the SVO (Semi-Direct Visual Odometry) and IMU (Inertial Measurement Unit) without GPS. According to this novel visual estimation method, the position and orientation are estimated by the MSF (Multi Sensor Fusion) with EKF (Extended Kalman Filter). In...

The technology of combining single pulse active location with passive location, the question of accomplishing accurate target location as well as avoiding the problem that active detection signals are easy to be intercepted and identified need more research. The location performance and error distribution...

After reviewing a large number of books and articles on the cost of tobacco logistics, this paper summarizes the results of the study on tobacco logistics costs. First of all, it summarizes the characteristics of tobacco logistics, which leads out the development trend of tobacco and the development...

Taking the project field as background, the paper studied the supporting technology of mining gateway with weak surrounding rock in 3-1 shallow seam mining of a coal mine, and solved problems of mining gateway slide and roof deformation and failure. The shortage of original supporting system was simulated...

We build a small-world network model to evaluate the impact of information, regarding the participants as nodes, and taking the communication among participants as sides. We then propose the concept of importance degree of information and influence degree of participants to measure the ability of information...

It is difficult but important for the searchers to predict the accident plane. In order to imitate the crashed range of the aircraft, we devise the model of the process of the fragments’ falling. Because of the influence of the current, we are supposed to consider the fragments flow in the ocean current....

Massive sky survey data are produced by the LAMOST large-scale survey project, which provides opportunities to search for some unusual and rare astronomical spectra. The low quality spectra still accounted for about half of total LAMOST observed data at present. For these low quality spectra, research...

3D printing is an advanced manufacturing technology which is developing rapidly in near thirty years. Its advantages lie in simplifying producing process, reducing material waste, lowering production costs and meeting the spacial needs of different customers. At present, 3D printing is widely applied...

Due to the open and dynamic nature of cloud environment, the service quality of a cloud service is not always trusted as advertised by cloud provider. Feedback rating-based reputation system is an effective approach to determine the trust of a cloud service. Unfortunately, a comprehensive reputation...

In this paper, it’s based on the acceleration and strain data from the test of a city railway vehicle .This paper introduced how to carry out the excitation from the center pivot, air spring and couple by numerical integration and finite element model and get the external load of the car body.

An oil spill model based on MIKE 21 software was established to investigate the oil slick movement if spill occurs during the construction of the navigation channel in Aiwan Cove in Zhejiang Province, China. The model was calibrated with the tidal level and current speed and direction measurements in...

It is usually with Q-switched technologies in order to obtain the peak power of laser pulses[1].This paper analyzes the characteristics and the electro-optic effect of LiNbO3(LN) crystal. We use LN as Q-switched crystal of 1319nm infrared laser and estimate its required voltage. The corresponding experimental...

Thinning is one of the main reasons that caused parts scrap, the geometry size is not accurate and the finished part has a poor quality in the process of cold stamping. Based on the orthogonal experiment method, LS-DYNA software is used in this paper to carry on the deep drawing process of box parts...

The seabuckthorn plant flexible dam (The SPFD) is a new type of ecological engi-neering, which can efficaciously control soil erosion and capture sediment in the Pisha sandstone gully within Loess Plateau of China. The seabuckthorn plant can resist flow due mainly to slowing velocity, and thus reduce...

It is important for the early diagnosis and treatment of lung cancer in the Computer-aided Diagnosis/Detection (CAD) system, and accurate segmentation of pulmonary nodules from tomographic images is the basic and active research problem for the benign or malign diagnosis. For this reason, this work seeks...

The collation and analysis of the existing problems of ground source heat pump system and the existing solutions, based on the research and development of a new patch of ground source heat pump tower, through the experiment, obtained in the air temperature is 27.1 , the wet bulb temperature is 19.8 ,...

In recent years, with the rapid development of artificial intelligence technology and deep learning technology, convolutional neural network has made a major breakthrough in the field of image recognition, and has become the mainstream method in this field. In this paper, the image recognition methods...

A novel long-term driving monitoring system with soft conductive foam and piezoelectric polymer film sensors was designed to enable measurement of two physiological signals: the electrocardiogram (ECG) and ballistocardiogram (BCG). The ECG was acquired using dry contact foam electrodes integrated into...

On the basis of Probability Distributions and Queuing Theory[1-4], two kinds of new toll stations are designed, which are the "shunting" toll station and "series parallel compound" toll station. And this article calculates the average queue length, the average waiting time of vehicles, the throughput...

A certain length of iron wire is widely applied in industry. In order to improve efficiency, an automatic production line, which includes transmitting, length control and cutting mechanism for iron wire, is developed by using Method of three dimensional design. The line is applied in one of processes...

Monitoring data is the important signal for safety situation decision of shield method construction. This paper analyzes the abnormal types appearing in safety monitoring data of shield method construction, and points out its caused by the environmental quantity anomaly, structure form change, misreading...

The fact that NaCl in air has induced degradation of cathode has been investigated for La0.6Sr0.4Co0.2Fe0.8O3 (LSCF). Cell performance was measured by volatilizing NaCl into the air supplied to the cathode at a constant current density of 200 mA cm-2 up to 100 h. At 800 oC, an exposure to 30 ppm NaCl...

The article started with heat allocation formula analysis, the author studied on the on-off time and area heat metering system characteristics, and discussed influence factors of system characteristics which include temperature difference between supply water and return water, radiator type to fairness...