Advances in Engineering Research

We use the finite element software ANSYS to verify the explosion experiment about whether the projectile shell contains brittle zone, and the brittle with different width and depth to improve the fragmentation rate and lethality of shell material about 50SiMnVB. The simulation results show that the shell...

This review introduced the low molecular weight polysaccharides preparation methods, and the research progress of functional activity of low molecular weight polysaccharides were described, and the future development and application prospect of the low molecular weight polysaccharides were discussed,...

Through the online learning platform, learners form a virtual learning network. With such the learning network, learners can learn relevant knowledge and communicate with other learners about study notes, which demonstrate the similar characteristics of network with strong or weak relations. From viewpoints...

On 16 June 2021, a moderate earthquake with Mw 5.9 occurred in the Banda Sea, precisely at the top of the Banda Arc. The fault plane mechanism in this area is still not well identified, and this problem can be solved by determining the activated fault plane. In this research, the activated fault plane...

The Student AI Chatbot is at the forefront of issues which today’s students face in the digital age we see an exponential growth of digital educational resources which in turn overloads the students’ access points, which in turn produces fragmented information and inefficient study practices. Also we...

Under the strategic context of China’s “New Era Western Development” and the “Belt and Road” initiatives, the geotechnical reliability of infrastructure construction in western regions has become increasingly critical. Addressing the limitations of conventional pile-bearing capacity analysis that neglects...

The implementation of this project aims to explore the specific application of digital twin technology in bridge construction teaching, promote the combination of technology and education, and train talents more suitable for modern engineering needs. This paper explores the application of DT in bridge...

The integration of the Internet of Things (IoT) into vehicular networks has given rise to a promising new concept known as the Internet of Vehicles (IoV), which is reshaping transportation by enhancing safety and improving mobility efficiency. The Electronic Control Unit (ECU) in IoV most commonly utilizes...

A wideband omnidirectional dielectric resonator antenna (DRA) array has been proposed. The simulated results show that the return loss of the DRA array is less than -10dB in the frequency band of 1.61dB-2.92dB (57.8%), which can cover the 2G/3G/LTE bands simultaneously. In order to reduce the deterioration...

In this paper, a composite communication network is designed to solve the problems of bandwidth bottleneck and high latency in chain-type wireless communication network for transmission line online monitoring. A theoretical planning model of optical fiber separation placement is formulated with object...

PIV (Particle Image Velocimetry) technology is a transient, multi-point and non-contact speed measuring method of fluid dynamics, playing more and more important role in experimental fluid mechanics. The measurement of supersonic complex flow field has high requirements for PIV experimental configurations....

Since the base version of IEEE 802.11 released in 1997, wireless local area network (WLAN) has been developing rapidly, and it has gone through many versions and amendments. The 802.11 protocol is now very sophisticated through 20 years of modification. Therefore, it is very hard to understand all improvements,...

The research goal of traffic flow theory is to set up a traffic flow model which can describe the actual traffic general characteristic, finding the basic rule of traffic flow. Due to the nature of the cellular automata, applying the cellular automata to the traffic flow has become a hot issue in the...

In this paper , a new Hash Function based on one dimensional logistic mapping is constructed , and the control parameter and iteration numbers of piecewise linear chaotic map is produced by the Logistic map. Let the iteration consequence make a linear change, one way scattered functions has a good flexibility...

Intercalated and exfoliated montmorillonite/amidoximated polyacrylonitrile (IAPAN/Mont and EAPAN/Mont) were prepared by using in situ polymerization technique. Intercalated Mont/APAN was obtained through polymerization with organ-montmorillonite and acrylonitrile. However, it became exfoliated when using...

With the rapid development of Shanxi electric railway, the harmonic problem is also more serious. In order to analyze the harmonic problems caused by the new Loufan traction station. In this paper, the main electric locomotive to simulate is SS4G in Loufan traction station. The simulation and test results...

The vehicle braking process and working principle of Anti-lock Brake System (ABS) are analyzed. According to the nonlinear ABS brake model and time-varying characteristics, a more accurate ABS hydraulic numerical model is established. Combined with Matlab software, a single wheel vehicle ABS dynamics...

How to predict capacity for lithium-ion battery is one of the most important problems in the field of battery health management. To make the newest data more efficiently, this paper proposes recursive least squares with forgetting factor to estimate the coefficients of the linear capacity degradation...

This article presents the results of the study of the mechanical strength of the intestinal epithelial layer of carp after exposure to heavy metals (lead, cadmium, zinc and copper). The presence of "live" epithelial cells in intestinal preparations indicates a violation of the mechanical strength of...

As a kind of power generation setup in the spacecraft, GaAs solar cells convert the solar energy into the electric power and satisfy the demand of power loads in the spacecraft. Ground irradiation experiment and in-orbit output power date were given in the article, which showed that the energetic particles...

A low power threshold voltage detection circuit and its accuracy optimization method for NOR flash memory are proposed in this paper. The whole circuit system is composed of data path, ramp voltage generator, and other auxiliary circuits. This memory system with 256Mb cells is simulated in a 65nm 2P3M...

In sustainability context, social risks are having equal importance with technical and environmental risks. However, most previous studies focusing on product development risks are mostly paying attention to operational risk and overlooking an effort to classify socially oriented sustainability risks...

This paper delves into the comprehensive analysis of support structures in the realm of 3D printing. It initiates by shedding light on the historical context and the profound significance of support structures within the sphere of 3D printing. Furthermore, it delves into an in-depth exploration of the...

In order to improve the detection efficiency and accuracy of target ships during navigation, as well as the distance measurement of target ships. This article uses the YOLOv5 model trained with ship data saturation to detect target ships. Using the Canny algorithm to detect the horizon on the sea surface,...

This study focuses on the magnetohydrodynamics (MHD) fluid flow. Fluid taken is compressible, viscous and Newtonian. Fluid flow is taken over a continuously stretching, permeable horizontal cylinder in the presence of internal heat generation or absorption and thermal radiation. The governing partial...

Fall detection constitutes an important and critical aspect of the safety and welfare of individuals. This paper presents a fall detection system for institutions in which people have high risk of falling, such as healthcare facilities and elder care home. The system setup comprises a lightweight scratch...

The technology of collaborative design based on network has fully strengthened the cooperation ability among enterprises. However, the problem of heterogeneous data sharing among Different design software has been a bottleneck in the development of collaborative design. STEP/XML element mapping method...

The fabrication method of microstructure for monocrystalline silicon wafers based on a mixture of sodium carbonate and sodium bicarbonate solutions under different conditions has been studied in this work. The texturization process has been evaluated in terms of the surface morphology size and the coverage...

Community detection groups a network into node sets according to their connections. It is an effective way to understanding and analyzing graph-structured data, such as social networks, collaboration networks, and bioinformatic networks. With the flourishing development of social network applications,...

It has become a novel and universal engineering problem that the new construction caused uneven foundation settlement of existing building foundations. This paper relies on the actual project that the tilt of existing buildings caused by a new tunnel. For the uneven settlement of existing building foundation,...

Objective To investigate the related risk factors and protective factors of Alzheimer’s disease(AD) to provide references for its etiologic study, early prevention and intervention Methods 1:1case-control study was conducted, the study included 87 patients of clinically diagnosed AD from the city proper...

According to the characteristics of the inevitable fuzziness and andomness in the slope stability evaluation,we proposed the model of rock slope stability evaluation based on cloud model, combined the combination weighting game theory considering subjective and objective weight,evaluate the slope instances.The...

The design scheme evaluation is an important part of product intelligent design system, but the existing scheme evaluation methods have not considered the problem of the mutual influence of the evaluation index, thus reducing the objectivity of the evaluation result. In fact, the influence relationship...

Carbon dioxide as the final oxidation product of carbon and carbon containing compounds, whether it is from the comprehensive utilization of carbon resources, but also from environmental pollution control, the research and development of its transformation and utilization has a very important significance....

Weak small signal acquisition is particularly important in electronic design and data acquisition. Effective processing of small signals must be magnified, while magnifying small signals can produce interference magnification and cause errors. In order to solve the interference and detune in small signal...

Sustainable development requirements made it necessary that underground space shall be used with larger size openings. This is to ensure a greater transportation demand and for preserving environment quality. The need for underground space technology has increased significantly during the past few decades...

The paper aims at the frequency analysis problem of the uncertain structure, takes the space beam structure with interval parameters as the research object. An expression of the relationship between the structural natural frequencies and the interval parameters is presented. With the partial derivative...

The results of a quantitative risk assessment for engineering stone mastic asphalts on blast-furnace slag aggregates are presented in this paper. The MathCad software module has been used. It has been shown that managing the properties of asphalt concretes significantly reduces the risk of defects appearing...

The water diversion-transportation-drainage-return had become the dominant regional hydrological processes in Qingtongxia irrigation area. For the reason of systematically mastering water cycle rules of Qingtongxia irrigation area, this study chose MIKE SHE distributed hydrological model with physical...

Based on the analysis of the the airline Internet level at this stage , the paper puts forward that "Centering on the passengers" is the basis of the airlines' Internet. For airlines, the final result of the Internet must be realized human-human interconnection, human-machine interconnection, human-material...

Detecting road damage is essential for maintaining safe and efficient transportation infrastructure. Automated systems for identifying road defects, such as cracks and potholes, play a crucial role in enhancing the speed and accuracy of road inspections, enabling timely and cost-effective maintenance....

Based on flow data from the Luodian River Hydrological Station, the RVA analysis method was first used to measure the degree of hydrological change of the five groups of indicators in the IHA index system. The improved RVA method combined with the Nemerow index was then used to calculate the overall...

Optical floating zone (OFZ) technique is one of the most used methods for growth of single crystals. Although OFZ has been extensively investigated for past decades, the temperature distribution during growth has not been understood due to the complicated process during growth. It makes the optimization...

The utility industry has entered into big data era as the construction and development of smart grid. It becomes more critical to store and process the big data efficiently, and to make effective utilization when the power big data are massive complicate. This paper analyses the status of power big data....

According to the verification requirement of DC current transformer, a multi channel DC transformer calibration platform based on virtual instrument is designed and built. Using Laboratory Virtual Instrument Engineering Workbench (LabVIEW) programming, it can play a flexible, customizable, powerful data...

The vibration of plunger pump to produce the serious influence its service life, through the plunger pump vibration test of the testing system can understand the vibration of the plunger pump, analysis to know the source of the harmful vibration, thus to find a way to eliminate its impact, has important...

To deal with the problem of smooth image progressing on the edge, presents a multi scale image fusion algorithm (SLP). The algorithm is based on the local Laplasse filter. First of all, using the local Laplasse filter, the images are decomposed into detail layers and smooth layers. Secondly, the detail...

The test compares and analyses the bibulous rate of different doses of 4g, 6g, 8g aquasorb in pure water and its water-retention property with EM bacteria in soil.The result shows : those three aquasorb all can absorb little water quickly,however, the larger the quantity, the slower the absorption rate.When...

An ex-situ tracking technique for atomic force microscopy (AFM) was used for investigating repeatedly the imaging of some specific spaces on the whole substrate with a high relocation accuracy of tens of nanometers. As an example of the application of this technique, AFM ex-situ study of the morphology...

With the development of architectural diversity, local pressure has become a common form in civil engineering, the problem of compression bearing analysis of concrete in edge and corner become more and more prominent, under the prestressed constraints, the article try to study on the change of the pressure...

The effect of leaching conditions on the enriching iron was studied after pre-treatment of pyrite cinder. And the influence of acid leaching temperature, leaching time, pH value and the ratio of liquid to solid on enriching iron was done. The results show that, when the acid leaching temperature was...

A lot of tank-type parts installed in the rail vehicle, which as a function of the bearing parts and mechanical connections between vehicles of media, which is to ensure the functional parts and vehicles are properly connected or protected features no outside combat, erosion, corrosion and other factors...

Predicting the status of flight vehicle in advance can have huge advantages in maintenance and early warning areas. Accurate forecast helps reduce maintenance costs and improve safety during the aircraft's life cycle. Combining the ability of convolutional neural network to extract features of different...

Raja Ampat Islands is an archipelago located in Raja Ampat district in West Papua province. With the vast territory of the waters of Raja Ampat, it is possible to build airports on the waters of the Raja Ampat islands such as Kansai Airport in Japan or Ibrahim Nasir International Airport in Maldives....

Since the 21st century, China’s economic industrialization and urbanization have rapidly advanced, and the quality and speed of urban comprehensive construction have significantly improved. The geotechnical engineering industry has also ushered in unprecedented development opportunities. With the increase...

Inversion analysis is conducted to ascertain crop growth model parameters of temperature, moisture stress index and dry matter conversion factor. The objective function of the inversion analysis is to minimize the error sum squares which simulated calculation of dry matter weight and measured value with...

Through various types of quick shear test, completely grasp the shear deformation characteristic of aeolian sand in Gurbantunggut Desert. The test result shows that the shear deformation curve of aeolian sand is influenced obviously by relative compactness. When the latter one is lower than 95%, the...

According to the serial correlation characteristics of liver CT images, in this paper, based on the morphology expansion and corrosion method, we put forward a liver CT sequence image segmentation method based on region growing algorithm. First conduct the smoothing denoising pretreatment to the sequence...

This paper proposes the scheme of a flexible piezoelectric generator. The generator using direct piezoelectricity of PVDF, can covert wind power to charge output. It possesses such advantages as: light, small-sized and better flexibility. Using FEA method, this paper carries out modal analysis and harmonic...

Industrial design has accelerated the consumption of resources and energy, and also caused the deterioration of the natural environment and ecological balance.Based on green design ,basic connotation and far-reaching significance of low carbon environmental protection,this paper analyzes the relationship...

To study the contribution of the solar energy resource to reducing energy consumption of air-conditioned train running along the Qinghai-Tibet Railway, the No. z6811 air-conditioned train of 25T was chosen as the research object and the intensity of the solar radiation on the outer surfaces of the train's...

The paper introduces the application of isolated building in Wenchuan after Wenchuan earthquake. In the isolation design of the Second Primary School, combination isolation technology and viscous dampers were used to reduce the earthquake response of the upper structure, the upper structure can reduce...

Along with the development of urbanization, the contradiction of Water resources shortage is increasingly prominent. The application of water-saving concept to the architectural design has been paid more and more attention. Water-saving concept can maximum saving water, protect environment and reduce...

As the scale and the size of communication networks increase rapidly, power communication has stricter requirements in the communication scheduling intensification. This paper firstly analyzes the requirements of digital visual systems (DVS) of communication’s indicators. It also classifies these indicators...

The shortest path query is one of the most popular location-based services for navigation. With it, one can determine a best route from a source to a destination in an unfamiliar environment and then save time for travelling. But under this service, some sensitive information may be leaked to others...

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

In this paper, numerical simulation method was applied to study the wind-induced pressure distribution on the roofs of low-rise gable roofed buildings. First, the numerical simulation was performed based on Fluent 14.5 software platform, and the results were compared with wind tunnel test results to...

Fermented ham is a kind of food that use lactic acid bacteria and other microbes to break down its protein and other nutrients. Fermented ham has excellent taste, unique flavor, and a lot of bioactive components, which has certain health function. At the same time, it can also plays a role in antibacterial...

The characters of flexible clamp stretch forming (FCSF) is introduced, the finite element model of FCSF is set up, and lots of numerical simulations for spherical part and saddle-shaped part are carried out. Contradistinctive analysis of strain, thickness and transitional length between RCSF and FCSF...

This work examines the crucial problem of task scheduling in cloud computing, where cost-effectiveness and service quality depend on good resource allocation. Although cloud computing offers scalable and adaptable on-demand services, work scheduling is challenging due to these environments’ dynamic nature....

With the rapid development of computer vision technology, object detection in drone-captured imagery has become a highly important research topic in recent years. This technology is now applied in a wide range of fields, including urban planning, agricultural monitoring, disaster response, traffic management,...

To study the effect of quasi-DC discharge plasma on the cold flow field, under the low equivalent ratio of ethylene and air in the combustor of scramjet, a quasi-DC discharge plasma model crossed the front wall of the cavity has been settled. Under the different plasma actuation intensity, the effect...

The rock structure is extremely complex, it is difficult to reflect the mechanical properties and the relevant failure mechanisms truly under loads whatever by the theoretical analysis or the laboratory test. In order to analyze the damage characteristics of the crossover jointed rock mass from the microscopic...

Space junk, one of the man-made pollution, is destroying the satellite's safety, ultimately making low earth orbit (LEO) unusable. Many countries, such as Japan and U.S., have been proposed many different methods for remediation of the orbital debris environment over the years, including the use of lasers,...

In order to ensure energy collecting efficiency of oscillating wave energy converter in the actual application of Donggang's sea area in China, Flow 3D software is used to simulate hydrodynamic performance of different shape of the buoy. The result is : The average mass center z coordinates of the butterfly...

The structure of the predictive control system of the test facility "Artificial lungs" is developed. The statement of the task of optimal control of actuating mechanisms of the test facility "Artificial lungs" is formalized: the equation of object control in the form of differential equations is formulated,...

This paper describes an approach to identify the influence of different stress type on hydrogen diffusion of the specimen which contains both tensile stress and pressure stress. The numerical method of simulating hydrogen diffusion by using software Abaqus is used to determine the influence. The simulated...

Videogrammetric measurement is a research focus for the organizations of wind tunnel test and it has no special requirements on the test model. Its key techniques for the test environment of the high speed wind tunnel are introduced in this paper, including the solution of exterior parameters with big-angle...

Unlike-doublet impinging jets are frequently used for liquid fuel and oxidizer atomization inside small rocket engines. An accurate setup for the primary atomization of impinging jets is crucial for combustion simulation accuracy. Spray location, spray angle, spray flow rate angular distribution, droplet...

In this thesis, we take SH79F32 as main chip, LCD12864 as the display screen,the ultrasonic sensor of HC-SR04 as collection tools and reach the function of ultrasonic distance measurement. Through Altium Designer Release 9 to conduct schematic design and draw PCB, and then solder circuit boards, use...

The active vibration isolation of the engine in the range of broad frequency can realize by the controllable damping characteristics of the magneto rheological damper. This paper firstly discusses the principle of the experiment and then explores the equipment and process of the experiment of vibration...

According to the requirements of the project in this paper, the frame structure with reinforced concrete columns and prefabricated cage system concrete columns are designed. Then the Pushover finite element simulation analysis is carried out under the action of one-way increasing load. After that, the...

Motivated by the fact that disordered data may appear in accelerated performance degradation tests when the sample is small, a new storage life evaluation method is proposed to mining information from the existing data. Combining the knowledge that the mean value of the performance parameter will degrade,...

By using the Fluent built wind field for 6 types multi structures of louver fins by numerical simulation. Through the comparison of the heat transfer and flow properties of region division method, obtains the best. The results of the study show that, in the wind speed for the 2.5m/s case, region partition...

In order to estimate the influence of various parameters of the nozzle on the premixed burner, the main technical parameters of the premixed burner nozzle were investigated by numerical simulation method. The factors including depth of the nozzle, back pressure of mixing chamber, outlet velocity were...

The nuclear waste disposal problem is a difficulty for the world nuclear energy development. Accelerator driven sub-critical system (ADS) has been universally regarded as most efficiently in disposing the long-lived nuclear wastes. The spallation target is an important component in ADS as the coupling...

The blends of PLLA (PLLA) and glucose(Glu) were prepared by mixing PLLA solution and glucose solution with various ratios when PLLA and glucose were respectively dissolved in N,N-dimethyl acetamide to prepare solutions. The structure, thermal properties and crystallinity of PLLA, glucose and PLLA-Glu...

As the market competition becomes increasingly intensive, and the profit from traditional voice services margins gradually declines. 3G telecom operators must provide various value-added services and enhance the ARPU (average revenue per user) depending on the consumer behavioral intentions. Therefore,...

This paper investigates short-run dynamic interactions between real estate investment trust (REIT) index and stock market index in Taiwan over the 2006-2015 periods. In addition to traditional linear analysis, the recently developed models are applied to explore the possible short-run non-linear linkage...

In order to find the relevance of the key words in the hot topics effectively, we proposed a clustering method based on words-distances. We calculated the distances between the words firstly, then calculated the sectional density of each words. We regarded the words which have higher sectional density...

The prolonged Covid-19 pandemic has impacted many industries around the world, tourism is without exception. Famously known for its abundant natural resources, Indonesia is currently facing huge losses in its tourism sector, one of which is in Patengan Village, West Java. A model of community-based tourism...

Refrigeration technique is a technique for regulating air temperature in accordance with desired needs, covering the needs of rooms in offices, in industry, shops and others such as processing needs for food preservation, including service/production, maintenance and quality control. In a cooling system...

Follow up on the collaboration between the Research Center for Appropriate Technology National Research and Innovation Agency with PT. Bukit Dewi Manggung, a study of the potential of micro hydro, was carried out in Rancamanggung village, Tanjung Siang sub-district, Subang district. Activities consisted...

The objective of this paper is to explain the effect of connecting Distributed Generation (DG) on power loss and voltage regulation in the Distribution Network (DN). The optimum location and size of DG are chosen using the Multi-Objective Slime Mould Algorithm (MOSMA). DG placement and size determination...

The oil development of the Triassic Yanchang Formation Chang8 section of the fractured reservoir in the south of Ordos Basin Tianhuan Syncline has used horizontal determinant deployment well pattern. It is common for fracturing wells communicate with neighbouring wells, and leads to substantial decline...

Protecting control box is an important part of the self-protection module of certain special vehicle. In the process of usage, it is difficult to find and test when the protecting control box breaks down. And when the operator makes misoperation, the vehicle can't come to self-protection and will occur...

The Nramp family plays an important role in the absorption of cadmium in plants. Combining with biological process of cadmium uptake by plants, we are going to build a network which represents the system and then establish two multi-level dynamic models according to the different expression of Nramp...

With the rapid development of ultra-high voltage power grid, plenty of transmission towers are built on soft soil area and the foundation of tower should be designed for economical and security reasons. The mechanism and application of the new micropiles foundation are discussed, which have many advantages...

The casting with more than 70% thin-walled parts and minimum wall thickness of 2 mm was manufactured by vacuum differential pressure casting (VDPC). The shower gating system was used to ensure smooth filling of melt. The top risers were replaced by chills and the positions of the chills were optimized...

Finite element analysis for the strength prediction of 3D braided composites structures are presented in this paper. A strength analysis model was established to investigate the strength characteristics of the 3D braided composites. Repeated unit-cell (RUC) model was used in this model to describe the...