Advances in Engineering Research

An optimization strategy is presented for composite wing box structure using genetic algorithm with manufacturing constraints. Firstly, on the basis of region division and key region defined, both fiber orientation angle and covered length of each ply are treated as design variables to optimize laminate...

The exhaust valves system is very important for internal combustion engines and experienced severe physical and chemical environment including frequent impact, high and varying temperature, exhaust gas’ chemical corrosion and deposition of fine dust, et al. This paper presents a failure analysis of two...

Compared with the hydrogen jet fire from a pressure vessel in an open space, the hydrogen jet fire inside a tunnel has a different kind of risk because of the semi-enclosed space. In this study, computational fluid dynamics (CFD) simulations of the hydrogen jet fire from a hydrogen transport vehicle...

The increase in vehicle ownership has led to an increase in the number of auto repair companies. However, people have neglected the pollution caused by auto repair companies during the maintenance process. This paper analyzes the 4S shop and a class of maintenance companies and analyzes the company's...

This study was to determine the factors that affect the cattle prices during the year-end holiday season in Yogyakarta, Indonesia. The study used 266 cattle transacted at Ambarketawang Animal Market and Mancasan Slaughterhouse in Yogyakarta, Indonesia. This research was carried out using a survey method...

The paper presents the study of the influence of complex additives on strength properties of cement concrete. Complex nanostructured additives from various components containing nanosized particles received through the laboratory study are used in experiments. High strength of fine-grained concrete is...

A large number of thermal recovery wells casing was damaged during the early development of Du 84. Casing damage thermal production wells amounted to 214 by the end of 2002, accounting for 66.7% of the production wells. The casing damage had affected the normal production of these thermal wells. Thus...

Social attributes are helpful to improve the performance of network including all kinds of wireless networks. How to discover the social attributes of vehicles trajectory becomes a challenge problem for VANET. Trying to find out the social relationship from the real trajectory becomes an attractive idea....

An Enterprise requires fund of knowledge to choose the right processes, technologies and resources. Enterprise knowledge management gradually become the key to victory in the fierce competition. Associations rules is top ten algorithm and an important data mining model studied extensively by the database...

This paper adopts rapid hardening sulphoaluminate cement compound Portland cement, silica fume and method of adding additives such as boric acid, through the experimental study of late properties of sulphoaluminate cement based composite cementitious material, the hydration product analysis and analysis...

As the evolution of 3GPP Long Term Evolution (LTE) technology as the third generation mobile communication technology, with the increasing demand of mobile Internet users in the world, it has become the focus of mobile communication industry, so academia and industry all of the LTE system key technology...

This article is based on the ecological security of the Hadoop cluster. Combined with the practical application of Kerberos security authentication system in Hadoop cluster, we propose a multi node HA (High Available) configuration in Kerberos, realize Master-Master-Slave design mode and increase redundant...

Low water apple productivity and less competitive prices are the problems faced by water apple farmers in Wonosalam District. However, with such a situation the farmers continue to cultivate water apple. In carrying out water apple farming, farmers have an effort and motivation. This research aims to...

A set of artistic characters can be generated by the inverse problem method in the fractal model, which has an advantage over the traditional model in recycling the flexible art composition. The code of iterated function systems of a fractal can be generated by composing the interrelated components in...

Efficient and safe heating is essential for maintaining thermal comfort and reducing indoor air pollution in traditional Mongolian gers, particularly during the heating season. This study presents a computational fluid dynamics (CFD) investigation of thermal performance in various stove geometries commonly...

Gluconic and xylonic acids are increasingly recognized as valuable bio-based chemical building blocks due to their broad applications in food, pharmaceutical, and polymer industries. These organic acids are primarily derived from the oxidation of glucose and xylose, respectively those two major monosaccharides...

In this work, the composites of Al2219 alloy are synthesized with increasing wt.% of silicon nitride particles by squeeze casting method. Al2219 composites with 12, 14, and 16 wt.% of silicon nitride reinforcement are studied for the impact on hardness and compressive strength. There is a considerable...

Lung cancer is the most common and dangerous cancer worldwide. An automatic detection system is the need of the hour for early diagnosis. Machine learning classifiers often encounter outliers in the extracted features. Motivated by this, the main aim of this study is to develop an outlier free automated...

In this paper, the molecular structure of polycarboxylic acid water reduction agent was designed, and five different functional monomers were introduced to prepare early-strength polycarboxylic acid water reducer. Study the effects of different functional monomers on the macro properties and heat of...

This design is designed for the second-class highway from Luqian to Baoshupo, which is located around Xianyou County, Fujian Province. The design scheme will reduce the traffic pressure of the existing highway to a certain extent, and divert part of the traffic flow to the route, greatly shortening the...

Such growth in construction, as well as development, calls for a steady supply of green construction materials that does not lead to high energy consumption and generation of excessive carbon dioxide. However, concretes, which are the most popular construction materials, are exposed to thermal cracking...

China is in the era of rapid development of information technology, and to promote the industry service and management, it is necessary to organically integrate computer application technology and information management together, thus highlighting the importance of computer technology, especially maximizing...

Accurate measuring of micro currents in fA range requires an ultra-low bias amplifier which has relative low output swing, limits the value of feedback resistor, and ultimately results a poor noise performances. In this paper, an improved low-noise transimpedance amplifier with a large feedback loop...

Through the analysis of surface defect characteristic about mechanical parts, a new method of based on target feature was presented to surface defect detection of mechanical parts. First of all, the test image is processed by mean-filter in order to eliminate the effect of noise on the detection. Secondly,...

This paper introduces the application of flipped classroom and case teaching in the basic course of computer based on BB platform. This course provides students with a free, developed learning environment, online learning platform on the BB. And the course combines the flipping classroom teaching philosophy...

This paper deals with analysis of the two-phase interleaved DC-DC converter for bidirectional current flow between the input sources and three-phase inverter for the electric drive. The bidirectional non-isolated topologies of DC-DC converter are also mentioned. In the paper is analyzed the current ripple...

In the new round of the electric power system reform, it makes full use of all kinds of supporting service resources, including demand side response and load optimization technology. Therefore, under the background of new electric power system reform and facing different power demand-side management...

Effect of slag composition on non-metallic inclusions for gear steel during LF process is investigated in this paper. It is found that with CaO-Al2O3-MgO slag and low SiO2 content in the slag, non-metallic inclusions in liguid steel can be transformed into tiny globular CaO-MgO-Al2O3-CaS complex inclusions...

This paper presents test results of mechanical behavior, failure pattern and energy rate of full-scale flat-plate floor subjected to fire. The experimental results show that crack patterns on top surface of the flat-plate floor under fire consistent with those at ambient temperature. The experimental...

To build the network music big data platform, We need to collect a lot of music resources from the Internet, And store it on big data platforms. Therefore, it is a key problem to build a storage system that is high performance, scalable and capable of supporting big data. The network music data is very...

A simple and efficient method has been established for the synthesis of cerium orthovanadate (CeVO4) nanoparticles without the use of any catalysts or templates. Using Ce(NO3)3•6H2O and NH4VO3 as main material, the CeVO4 nanoparticles were synthesized by ultrasound method at 60°C and different pH conditions,...

Since there exists plastic zone on the crack tip of reinforced beam, it is impossible to use crack instability criterion for brittle materials. Based on the theory of fracture mechanics, by using D-B model and considering the actual construction conditions, this study puts forward a COD criterion-based...

The torsion behavior tests on Mg-Gd-Y-Zr magnesium alloy have performed before and after liquid nitrogen cryogenic treatment (CT) by torsional test machine. The experimental results show that the torsional strength and plasticity of the alloys have been significantly improved after CT 72h and 96h, compared...

working with waste water contain dyes presents challenges, so to find some photocatalyst artificial synthesized is a fascinating research job. Using Na2WO4•2H2O, Zn(NO3)2•6H2O, Bi(NO3)3•6H2O and HF as raw materials, three different mole ratio of photocatalyst of Bi2WO6-xF2x / ZnWO4 have been successfully...

The paper is devoted to the study of interphase (solid phase, soil absorbing complex) migration processes of vertical migration of iron in soils of the nature faunal sanctuary. Besides migration processes, the paper considers the influence of various factors on these processes. The comparative analysis...

There exists distrust in simulation validation all the time. A quantitative approach is proposed to obtain measurable, comparable judgments of simulation correctness. The commonality between machine learning and simulation model validation is analyzed. We focus on the idea of applying cross validation...

Species of Cassia (family Caesalpinaceae) are well known in India and other tropical countries for their medicinal values. This study evaluates the efficacy of the methanol extract of the leaves of Cassia javanica L. on paracetamol-induced liver damage in experimental rats. The animals were randomly...

It is a hard task that the alleviating poverty work should be finished with good quality on time during the new process of ecological civilization in China. To achieve this goal, the method of agricultural ecological capital operation can be an effective way, as it can use regional ecological resources...

Lecturer usually uses media in order to help students’ understanding about organic chemistry. In this research, the aim is to find out the ability and perception of students in learning by using media in the form of online and offline. The offline media we used was namely Spartan Student V6, and ChemAxon...

This paper analyzes the cause and effect relationship and evolution characteristics of enterprise technology innovation risk competitive intelligence early warning, and constructs the dynamic model of enterprise technology innovation risk competitive intelligence warning.Then the model is simulated on...

To achieve the self-sensing detection of unbalanced power grid voltage, control system under the unbalanced power grid conditions are analyzed. Then the positive and negative sequence virtual flux of power grid is separated; then an estimation algorithm of unbalanced power grid voltage is presented by...

This study aimed to synthesize N-alkylated chitosan derivates with similar degree of substitution (DS) and alkyl groups of different carbon chain lengths via reductive alkylation, and then to compare their coagulation properties. Structural properties of the N-alkylated chitosan derivates were characterized...

This paper presents theoretically the torsional inertia moment for open thin-walled rod, based on the theory of thin-walled shell. In the deduction, the rigid contour hypothesis is adopted and the cross-sectional warp is taken into account. With the above torsional inertia moment obtained and using the...

This paper describes a theoretical research on the hysteretic behavior of steel reinforced concrete (SRC) frame structure with angle-steel concrete columns based on the Park tri-linear model. The theoretical results were compared with tests, and main parameters effecting on the mechanical performance...

Rubber is a material that easily deforms when subjected to friction, such as in tires, seals and transmission belts. It is very important to understand the relationship of deformation to its stress and friction contact on the rubber. The stress and friction force are closely related to the strength and...

DDoS Attack is one of the threats in a series of network systems. Attacks on a network in one unit of time can subsequently occur in a very large number of attacks. Previous research has been done to avoid DDoS attack through classification process and one of which is based on Random Forest method. The...

The Student Employment Portal project is designed to streamline job opportunities for students, providing a comprehensive platform for applying to school jobs, part-time work, study work programs, and full-time positions post-graduation. Utilizing cutting-edge technologies such as Blockchain, Artificial...

Fossil fuel consumption continues to increase every year and the possibility to find new reserves will be increasingly difficult. It can be estimated that if the current rate of consumption and production continues, oil reserves will be depleted in 50 years. The increasing difficulty in finding new oil...

In this study, response surface methodology was applied to optimize the transesterification of palm oil using zeolite-X prepared from rice husk silica and aluminum foil as a catalyst. For this purpose, response surface methodology (RSM) with a 3-level-3 factor central composite design was applied to...

Current research on cold patch asphalt mixtures primarily focuses on the development of cold-patch asphalt modifiers, such as SBS, SBR, and polyurethane-modified asphalt cold patch materials. Epoxy resin, a thermosetting polymer with excellent adhesion, corrosion resistance, and high strength, is widely...

With the rapid development of technology, life and travel have become more convenient. However, current navigation systems have limited functions, and visually impaired people still face difficulties in traveling. To address this issue and provide a convenient living environment for the visually impaired,...

It is of great significance to further investigate the pyrolysis reaction mechanism of heavy oil at various temperatures by simulating the organic model molecular pyrolysis reaction network during heavy oil development. This article employs molecular dynamics simulation methods to examine the high-temperature...

Academic advising in higher education institutions plays an important role in supporting student success. However, the effectiveness of conventional practices is still hampered by several factors, such as the requirement for face-to-face meetings, inflexible schedules, and manual data recording, which...

Based on the overall socioeconomic conditions and in response to the strategic requirements of law-based governance and maritime power development, this paper focuses on the ways to implement MOT (Ministry of Transportation) Guidelines on Improving Expertise in Salvage. Based on the guidelines, the article...

Inter-domain access control can guarantee the safety of resources sharing among different domains, role map-ping is one of the key technologies which realizing access control. Traditional mapping mechanism, which in-volves congested traffic, has massive computational complexity and has a big traffic....

Relying on a large immersed tube tunnel, based on 3D potential flow theory, the tube-floating barge mooring system was calculated and analyzed by hydrodynamic software SESAM. The mechanical characteristics of the mooring rope and the motion response time-history curve of the tube-floating were obtained...

The possible use of activated carbon (COASAC) prepared from camellia oleifera abel shells (COAS) by phosphoric acid activation as a biosorbent in the removal of Cr (VI) from aqueous solution was demonstrated. The effect of different parameters such as initial concentration of Cr (VI), dose of adsorbent,...

Cognitive Radar could adjust its transmit waveform to get the best outperform in the alternative targets and environments with a close-loop feedback. It has been regarded as one of the tendency of radar in the future. The optimization waveform design method is one of the critical technologies of radar...

Let G be a finite group and P be a p-subgroup of G, where p is arbitrary prime dividing of |G|. If P is abnormal in G or the normalizer of P in G is a p-group, then every Coleman automorphism of G is an inner automorphism. Interest in such automorphisms arose from the study of the normalizer problem...

With the development of the apparel industry and the renewal of the computer technology, computer aided design CAD is gradually widely used in the field of fashion design. In today's high working pressure, under the background of the fast pace of life, it is widely hoped to get warm living space. Therefore,...

When a person fills a bathtub with hot water and settles into the bathtub,the bath gets noticeably cooler.In order to study the temperature even throughout the bathtub and as close as possible to the initial temperature, we need develop a model of the temperature of the bathtub water in space and time.First,we...

Because the buried hill is deeply buried and seismic data is difficult to identify, it is difficult to exploration the buried hill in Jizhong Depression. Time-frequency electromagnetic method(TFEM)has the characteristics with directly detecting oil and gas reservoirs, and core drilling test and analysis...

Levy process, as one of the hot issues in the modern ruin theory, attracts more and more scholars in recent years. In particular, the risk model in this paper, as the promotion of the classical model, is different from the classical Cramer-Lundberg risk model. According to the definition of the expected...

Air-entraining agents have been regarded as essential for the workability of concrete since the 1930s, the uniform, stable tiny bubbles in concrete can improve the workability of concrete, reduce segregation and bleeding in fresh concrete, improve freeze-thaw durability and increase pump-ability of fresh...

As a kind of power system, microgrid integrates the distributed power, the energy storage system and the controllable loads being connected to the low-voltage power grid. It can operate in the island-mode and connected-mode. In this paper, we focus on the study of the control strategy, take the reasonable...

Kindergarten should create graceful environment to fit in children’s psychological request. In designing master plan of kindergarten, a favorable exterior environment should be created by functional division, entrance setting, building organization and integration of exterior play area, green and roads.Kindergarten...

Seismic response of municipal solid waste (MSW) landfill under horizontal and vertical earthquakes has been investigated by dynamic centrifuge testing. The MSW was modelled by mechanically representative model waste. The acceleration response at various depths were recorded and used to investigate the...

An integrated method to acquire fuzzy rules is presented. First Kohonen network is used to quantify data, and then the rough set theory is used to produce the initial rules, and the model of fuzzy neural network is established according to the rules, to generate less concise rules, finally through the...

In this paper, experimental study is carried out for the mixed mode notch-crack transformation propagation in 06Cr19Ni10 austenitic stainless steel with consideration of the material orientation. It is found that after initiation, the new formed crack grows in a direction perpendicular to the applied...

Objective: Recombinant hepatitis B virus nucleocapsid protein maintains the ability to form particles self-assembly. We tried to use non-virus-like particles HBc package wrapping foreign gene to protect and transfer siRNA of MEF2D gene to target position, in order to make a contribution to analyze the...

A photo-responsive controlled pesticide release film system was constructed by using PEG supported spiropyran as a carrier and chitosan as a film-forming additive. The biodegradable film was formed by coating method in the glass sheet. Acetamiprid, a new broad-spectrum insecticide with certain acaricidal...

Along with the development of science and technology, in the questionnaire service industry,began to gradually develop the Internet.More and more enterprises are inclined to make the decision of the company through online questionnaire survey service platform.The system uses JSP, MVC framework, MySQL...

The rapid development of large-scale photovoltaic power generation is an effective means to alleviate the energy crisis and saving haze. With the continuous expansion of photovoltaic grid-scale, grid access conditions are increasingly demanding. Given the inverter under different grid conditions, its...

The developed finite-element model of the assembly structure of a riveted joint can be used to a) calculate the stressstrain state of joint elements in elastoplastic forming, including rivet point formation; b) take into account residual stresses following elastoplastic deformation under external loading...

In this paper, the second order sliding mode control law was designed based on the super-twisting algorithm and the switching function sign(s) was replaced by the saturation function sat(s) for the torque and flux controller in the permanent magnet synchronous motor double closed loop control system....

In recent years, medical examination has become a popular specialty in higher vocational education. This article mainly analyzes the current situation of medical laboratory higher vocational education, finds out the reasons, determines the orientation of the training goal of medical examination in higher...

Nowadays,there is an increasingly hot topic among the academia which concerns the exiquisite place that algorthm produce.A superior algorithm can not only soup up one thing, but also maximize the benefits and generate the smallest overhead.The kinds of algorithms abounds,such as dynamic programming method,greedy...

In order to simultaneously obtain the comprehensive performance and mechanical characteristics of spindle parts of CNC machine tools, In this paper, through analyzing the testing technology of spindle parts performance, we designed a testing platform. It considers multiple types of spindle parts and...

Flame fusion preparation of LYSO: Ce single crystal need excellent mobility raw powder of high purity. The solid phase synthesis of LYSO:Ce single crystal powder of high quality is prepared. After removal of moisture, weighing and grinding, the original high purity powder sintering experiments are conducted...

The paper describes a search and selection of potential heparanase inhibitors. This enzyme is inhibited to protect an organism against various diseases such as chronic kidney disease and diabetic nephropathy. These diseases are widely distributed and often lead to death. Searching low-cost plant analogs...

The purpose of this study was to determine whether the application of the search, solve, create, and share (SSCS) learning model can improve students’ quantitative mathematical reasoning. This study was a pre-experimental research with one group pretest-posttest design. The population in this study were...

This research was observed on the CTAB modified Lampung Natural Zeolite (ZMS). The aim is to improve the adsorption capacity of tapioca wastewater. This zeolite modification process has several steps, starts with Lampung Natural Zeolite (ZAL or LNZ) pretreatment, LNZ activation by NH4Cl, and ends up...

The nickel electroplating process has been carried out on steel with the help of a magnetic stirrer to homogenize the coating results on the surface. This study aims to determine the effect of time and temperature with the help of a magnetic stirrer on the thickness and hardness of the coating surface....

The lungs are vital organs for the respiration of the human body. If it’s not correctly observed, it can lead to disease in this organ. It’s like pneumonia, where one child dies every 39 seconds. Indoseia ranks third after India and China in the case of tuberculosis disease. During the COVID-19 pandemic,...

As long as Rahadi Oesman Airport is operating, but until now it does not yet have Surface Level Heliport facilities for take-off landing helicopters, so helicopters often take-off landing in the Apron section. With the condition of the Apron pavement being inadequate to carry the helicopter, there was...

This study analyzes the effect of immersion duration in three types of water—seawater, brackish water, and freshwater—on the stability and flow of a Marshall asphalt mix using Pen 60/70 asphalt. Test specimens were prepared using the Marshall method and immersed for 30 min and 24 h to evaluate the impact...

This study establishes a pile-soil cavity-geotechnical model. The reliability of simulation parameters is verified through experimental piles, and load-settlement curves of piles under varying height-to-length ratios and burial depths of soil cavities are provided. The bearing capacity of piles under...

Marine operations have always been complex and risky, particularly when carried out at sea. Adverse weather conditions can compromise safety and operational efficiency. In the past, marine control systems, designed and installed for various missions at sea, were often unreliable, bulky, and less responsive...

In the subcontractor selection for prefabricated residential EPC project, it is still difficult for the general contractor to solve the problems of design-construction phase separation and realizing the maximum team potential, the research of project benefit calculation method has become the first problem...

This study aims to develop a web-based application for collecting complaints from the academic community at the Faculty of Vocational Studies. The Research and Development (R&D) method was employed, involving need analysis, application design, implementation, and evaluation. The application is designed...

To investigate the impact of supplementary pile reinforcement on the vertical bearing characteristics of the pile foundation, this study employs finite element simulation to analyze the settlement and stress before and after reinforcement. The results show that the settlement of the pile foundation decreases...

Early detection of plant diseases is crucial for minimizing crop losses and ensuring sustainable agriculture, particularly in tropical regions. Cocoa (Theobroma cacao), a major cash crop, is highly susceptible to diseases such as Black Pod Rot and Monilia Pod Rot, which can severely impact yield. Conventional...

Each student has a different interpretation of the experiences gained in everyday life. When students are in the learning process in class, the lecturer facilitates learning activities so that new concepts are formed that are in accordance with scientific concepts. Lecturers should design effective learning...

The SiO2 microspheres with different diameters were prepared by a seeding technique through adjusting the mass fraction ratio of TEOS and silica sol in the reaction solution. The mesoporous SiO2/Fe3O4 microspheres with size-tunable hollow cavity were prepared by using the SiO2 microspheres of different...

Aiming at the problem of inaccuracy of Face Recognition and No Object Tracking Ability with the current monitoring system, an intelligent monitoring system design scheme based on ZigBee technology is proposed, and the hardware and software module design of the system is implemented including data acquisition...

By applying the novel method, some sufficient conditions are established for the existence and global exponential stability of anti-periodic solutions for a kind of fuzzy Cohen-Grossberg neural networks on time scales. Moreover an example is given to illustrate our results.

Previous studies have found that banana flowers, leaves, pseudostems, roots, infructescence stalks, and peels (M. paradisiacal (Linn.)) have antihyperglycemic effect. The banana peel (Musa nana Lour.) might have the antihyperglycemic activity, its antihyperglycemic activity and active ingredients remain...

The cellulose grafted copolymer was synthesized with 2-(Dimethylamino)ethylmethacrylate(DMAEMA) onto the sugarcane bagasse under microwave irradiation in homogeneous media. A homogeneous solution was obtained through dissolving cellulose in 1-butyl-3-methylinidazolium chloride ionic liquid which the...

This paper designs a half-bridge IGBT inverter switch solid laser power. This power has realized great energy work for more than 20 hours in succession. It is reliable and steady. Its switch frequency is in about 25 kHz. We have adopted the modules to design, have strengthened the interchangeability...

Amphiphilic polymer of N-benzyl-N-hexylacrylamide terpolymer were synthesized using free radical micellar polymerization method. Apparent viscosity, fluorescent probe and DLS was employed to study the aggregation behavior of P(AM-NaA-BHAM). The critical aggregation concentration (CAC) of P(AM-NaA-BHAM)...