Advances in Engineering Research

For the production formulas of the gas reservoirs with bottom water, the models established in the past consider that only a small part of the gas layer is perforated and the entire region under the perforated zone is considered as the hemispheric flow, ignoring effects of the opening degree and formation...

This paper analyses the background of the proposal of sustainable development in detail. The essence of sustainable development is revealed. The energy analysis method for sustainable development is presented. Some practical advices on the implementation of sustainable development are given. The work...

The Microwave plasma chemical vapor deposition (MPCVD) method was used to make diamond film in this paper. The influence of working gas supply mode and velocity were investigated using numerical simulation method. The distribution of gas flow rate at two different gas supply modes was analyzed by software...

In the making and erection process of wall-column structural system of electrostatic precipitator casing, the imperfection will be produced inevitably and influence the stability of the column. It's necessary for numerical simulation model that the imperfection is taken into account when the numerical...

In this paper, we focus on the efficient algorithm for solving the multi-commodity flow problems involved in TE and develop an improved approximation algorithm (i-FPTAS) based on the Fully Polynomial Time Approximation Scheme (FPTAS), with aim of greatly improving computational efficiency without compromising...

In the past few years, the field of artificial intelligence (AI) has experienced explosive growth. Large language models (LLM) such as some AI developed for chat and information generation have drawn massive attention from the public, and more robots for commercial uses are implemented with them. However,...

Building sunshade components can effectively control solar radiation getting into the room and play an important role in the building thermal insulation. The study takes the west facade of the graduate dormitory at Guzhenkou Campus of China University of Petroleum as the research object. The angle, length,...

Wetland is a valuable natural resource, with irreplaceable ecological functions. With the development of industrialization, urbanization and population growth, wetland area is decreasing. And ecological functions gradually weakened. Based on TM remote sensing image from 2000 to 2011, this paper built...

Intrinsically Disordered Proteins (IDPs) are a class of proteins that have no sure tertiary or secondary structure in the natural state. They are widely found in nature and involved in cell signal transduction, regulation, and protein interactions with a wide range of human diseases related. The research...

Pupil location is one of the key steps for iris location as pupil boundary corresponds to iris inner boundary. But uneven illumination affects the segmentation result heavily. The pupil region is the darkest part in most of the images, but it’s not the only part. The proposed algorithm is based on the...

A analytic hierarchy process optimized by topsis was presented aiming at the disadvantages that there are inconsistency and too much subjectivity in the existing multiple attribute decision making(MADM) methods when dealing with the weight calculation and index ranking problems. This method utilizes...

In this paper, we study the self-tuning method of the controller parameters of the servo system based on variable step size iteration method. We first introduce the basic knowledge of two degrees of freedom, the design of the initial value of the initial value of two degrees of freedom, and the selection...

A cooperative node selection scheme based on credibility for the problem of cooperative node selection is proposed in wireless sensor networks. A credibility model is given considering the cluster head nodes of subjective reliability and obtained from other nodes impersonality and reliability, the model...

, -fluoromethylene-ATP is advantageously obtained via pho-sphorylation of corresponding ADP analogue using catalytic NTP(N=A or U),PEP,nucleoside diphosphate kinase(NDPK), and pyruvate kinase(PK). In order to find the optimized reaction conditions of synthesis of , -CHF -ATP via the catalysis of ATP...

Based on the modified plate-truss model, the time-varying ultimate capacity of RC subjected to bending, shear and torsion were studied. An average constitutional relationship of steel bar is developed by considering both the bonding-slipping effect and corrosion ratio of reinforcing steel bar. The calculation...

An improved voltage-integration CMOS image sensor is presented. Some circuits is shared between the voltage integration block and the analog-to-digital convertor (ADC) through an optimal operation timing, which makes use of the different input-signals selected by the switches. Dynamic range expansion...

Synergic collaboration and load balancing are important techniques for complex aircrafts system simulation. The synergic models included aerodynamic, atmospheric and engine control models are studied and categorized into two groups in this paper. Moreover, optimizing the dispatch strategy is an essential...

In this paper, we study the homomorphic techniques used in GSW fully homomorphic encryption scheme, and point out the drawback which prevents the GSW scheme from efficiency. In order to conquer the weakness of low efficiency, we propose an improved homomorphic technique. Through comparative analysis,...

In the process of the dry grinding machine replacing the traditional water grinding machine, the whole solution of the dust collection and recovery system of the ceramic dry edge grinding machine is put forward through the experimental research on the dust property, the wind cooling technology, the dust...

The percentage rebound value r is a key parameter for evaluating the resilience of flexible cellular polymeric materials. Usually, researchers use photoelectric detection method to construct the ball rebound tester. But the accuracy of ball rebound tester is hard to measure and keep. This paper analyzed...

The 367 coal mining face in FengCheng ShangZhuang coal mine was selected for the project background, the law of the mining permeability is mirrored by the law of the flow of parallel hole that drain gas from virgin coal seam following by the moving of working face. According to the surveying data, the...

An alumni survey or better known as a tracer study conducts to tracks the alumni activities. For universities, the benefits of tracer studies include getting information, input, and motivation to advance their achievement further, so they can escalate prospective graduates to adapt to society’s needs...

Cement grouting is a common method to improve the dam foundation, however, the cement take needed for improvement is difficult to evaluate because of the complexity of the rock foundation and the uncertainty of the influence factors. Although grouting design depends largely on the permeability of the...

Computational fluid dynamics (CFD) technology was used to conduct an analog simulation of air distribution on the first underground floor of one metro station. The temperature field distributions of the station hall and platform were obtained under two schemes, namely, fixed air volume and variable air...

With the increasing proportion of the elderly, fall will be a serious threat to the health of the elderly, especially elderly people who lives alone. Therefore, how to automatically detect abnormal behavior has become a key problem.Because of image recognition ,which is captured from the general monitoring,...

Excellent Schottky characteristics of indium-tin-oxide (ITO) contact formed on n-type GaN (n-GaN) were demonstrated. The post-thermal annealing of ITO contact sputtered on n-GaN led to a significant improvement in the Schottky characteristics, particularly pronounced in the air ambient than nitrogen...

It is analyzed by the technology plastics materials and molding process of bearing cylinder pieces, which has carried on the mold scheme demonstration and demoulding mechanism, the forming problem of bearing cylinder pieces is solved, and it is designed that the main runner, cold slug well, pull rod,...

In this paper, the air blast shot peening on Cr-75Nb alloy was carried out at the pressure of 0.6 MPa and processing duration of 13 min. The result showed that a severe plastic deformation layer was gained on the surface of Cr-75Nb alloy. The thickness of deformed layer was about 50 µm, and the structural...

The Thesis introduces an accurate location method facing campus student identity recognition on the basis of ultrahigh frequency RFID fingerprint. First, we obtain the fingerprint information in the sensor installed on the robot during the training stage, introduce the particle filter location algorithm...

Aerodynamic heating would generate high temperature rise on aero engine structure and severe temperature gradient on the body of assembling materials at the front of gas inlet which would develop heterogeneous temperature and thermal stress field and influence the kinetic characteristics of mechanical...

the number of various things began to connect to the Internet. Much more data than ever before has been recorded in the data system. Accordingly, the system that saves, analyze a data Measured from things is required. People try to predict the future through nature. IoT cloud platform that write an overflow...

Based on "Magic Formula", the tire dynamics simulation model was established in the Matlab/Simulink, contraposed many conditions like braking, steering and steering-braking combination. The main load of tire and the wheel aligning torque were simulated, then got the relationship curve between the longitudinal...

Two types of steels containing rare earths (RE) were smelted by the vacuum induction furnace with magnesia crucible, RE metals were added in liquid steel at the end of the smelting process, chemical compositions of the test steels were analyzed, and inclusions were observed by scanning electron microscope...

As a form of cultural artifacts, jemparingan brings local values and virtues that need to be preserved. This article focuses on the ways in which PERPATRI as traditional archery association, after its successful bid to introduce as traditional sport, Jemparingan is branded as a sport tourism destination...

During the process of improving train speed, carry capacity and quantity of cars for each train, the most technical challenging task for an engineer is dealing with the braking system. Besides using common braking technologies such as electric brakes, air brakes and eddy current brakes, we need to study...

It sometimes is hard to verify whether a binary relation is transitive by using its definition directly given by , On the basis of analysis and research of the definition of the transitive property of binary relation , this paper launches a new judgment rule, which is very helpful for students to judge...

This paper studies the maximum power point tracking (MPPT) methods under partially shaded conditions for a stand-alone PV array system. The rules for judging partially shaded conditions are presented and integrated into four MPPT methods. These methods are tested in real-time simulation environment,...

A new tetra-cobalt-substiituted dimeric tungstoantimonate Na10[Co4(H2O)10(B- -SbW9- O33)2]•36H2O 1 was synthesized in a weakly alkaline solution. The compound was characterized by elemental analysis and IR spectroscopy. A single-crystal X-ray analysis was carried out on the crystal 1 which crystallizes...

To evaluate the environmental safety of the joint action of nano-TiO2 and nano-carbon, Microcystis aeruginosa was used as the model organism to explore the effect of different concentration of nano- TiO2 and nano-carbon on the growth of algae. This experiment suggested that the growth of algae will be...

Adopting absolute nodal coordinate method, this article establishes dynamic model of double-connecting rod flexible manipulator. Its broad sense moment is obtained through virtual work principle. State equation is further deducted on this basis and numerical integration method is given. This article...

The combination of diesel oxidation catalyst (DOC) and catalyzed diesel particulate filter (CDPF) is one of the most effective ways to control particulate emission. Particulate number (PN) and size distribution characteristics are studied when a heavy duty diesel equipped with or without DOC+CDPF in...

Derivation of parallel three-hole of small spacing Tunnel in shallow non- bias case, surrounding rock pressure formula in sequence of first side hole after middle hole excavation, drawn the corresponding computational model For the study of parallel three holes of small clear space tunnel surrounding...

SWCNTs are widely used in the fields of biomedicine, electronics and energy storage. With the increasing of SWCNTs production, SWCNTs are likely to present in the environment. In this work, a series of concentrations of SWCNTs were used to test the toxicity to human epithelial cells (A549). Results showed...

Dissolved organic matter (DOM) in petrochemical reverse osmosis concentrate (ROC) is important for developing ROC advanced oxidation techniques. In this studty, DOM before and after ozonation was fractionated using resin adsorbents into five classes: hydrophobic bases (HoB), hydrophobic acids (HoA),...

In order to carry out comprehensive analysis and study on the application of GIS in the same frequency and phase AC voltage withstand test method,this paper studied the same frequency and phase AC voltage withstand test of GIS, briefly described the test device and the connection principle of same frequency...

This paper proposes a novel plant growth simulation algorithm. Through the optimization experimental of testing on the standard function, the results show that the novel plant growth simulation algorithm has reliable convergence, high convergence rate and solution precision.

The paper makes use of the calculation results of ANSYS software, and establishes a model of corona at ultra high voltage transmission lines with Electromagnetic Transient Program (EMTP).The proposed model is applied to lightning calculation of the conductors. The simulation results indicate that the...

Modern dairy cattle breeding is based on the usage of various breeds of livestock. However, among this variety there are leading breeds. In Russia as well as in the world one of the most common breed is the Holstein breed. Besides, black-and-white and Simmental cattle are widely used. Each of them has...

An autonomous identification and planning system is proposed and a flight platform based on Linux embedded control system is developed for a quadrotor unmanned aerial vehicle (UAV) based on vision. In the process of control, through the Zenmuse X3 camera and the Open CV library for real-time image processing,...

Mechanical properties of different cement-soil in Zaozhuang are studied in this paper. Clay and silt are two kinds of foundation soil widely distributed in Zaozhuang University which are choosed to make cemented soil samples.The influence of cement content and curing age on unconfined compressive strength...

To avoid the complex calculation of derivative in the backstepping design procedure, a novel kind of tracking differentiator was adopt to solve the derivative of ideal angle speed of the pitch channel missile system. Also, the ideal angle speed should be bounded or the stability of the system can not...

As human activities intensify the development and utilization of water resources, significant changes occur in the hydrological cycle and underlying surface conditions of the basin, leading to potential errors in traditional water resources assessment methods. Based on the distributed hydrological model...

In order to improve the utilization and added value of the Yangtze river sand, the raw materials for preparing high performance quartz sand insulating brick were investigated, the following conclusions can be obtained through investigating the influence of mechanical milling loading quantity on performance...

Designed in this paper, the energy-saving electronic 10kV metering device is composed of electronic voltage transformer, electronic current transformer, electronic metering terminal and communication terminal. Electronic transformers and metering terminal are no longer designed and tested independently....

The majority of heavy oil block has entered a phase of high-throughput round in China, mining results have clearly deteriorated, The natural reservoir has been a marked lack of energy, resulting in reduced cycle of oil production, oil and gas than the lower mining costs, economic deterioration. The research...

Researched on a monitoring system for one type of power drive device. Designed a mathematic model for monitoring and evaluating the status of power drive device based on data fusion theory, and developed the related software. Developed a database to manage the measured status data, and then developed...

In order to obtain the temperature field of water in a pool with a person inside, this paper established mathematical models by taking the human factors, including static and dynamic factors, into consideration. Firstly, based on the three-dimensional N-S equations and the concept of the equivalent size,...

With the national emphasis on energy conservation and environmental protection and as the primary energy consumption and emissions, more and more people pay attention on the energy saving of thermal power plant. In this paper, some relevant indicators for the energy saving of thermal power plant are...

the mathematical model of thermal stress field and temperature field are built for the main member lay with different dropping velocity of temperature.the analytic solutions for the temperature and thermal stress are obtained by the integration transformation.the numerical results are shown in Figs.The...

It’s been widely used that Synchronize data Sampling with GPS clock. But, the precision should be improved when it’s used for dielectric loss test in a substation. In this article, it’s studied that a portable testing system which based on high-precision sampling synchronously with GPS and wireless....

The effects of applying four accumulator species (Conyza canadensis, Cardamine hirsute, Eclipta prostrate and Nasturtium officinale) straws in cadmium (Cd) contaminated soil on phosphorus (P), potassium (K) and nitrogen (N) uptakes of Galinsoga parviflora were studied through the pot experiment. Five...

Web application system is a kind of system organization form which is of large scale and complex. Accurate requirements modeling of this kind of system has very important effect on system success. A web functional modeling method is raised in this paper called WASFM. The paper presents the formal description...

Due to large amounts of traditional energy consumption, faces increasingly dry up, people began to look for alternative new energy. And waves in the ocean energy can make a very good substitute, so countries began to study wave energy power generation. In the study of wave power device, the movement...

In order to ameliorate the poor durability and fireproof performance of high-rise building external thermal insulation, CS wallboard is applied to high-rise buildings .Using response spectrum method and time-history analysis method，the high-rise buildings with this composite wallboard as the main bearing...

Augmented reality technology is one of the hottest topics in the field of computer vision. This paper systematically reviews the research status of vision-based augmented reality technology. First, it outlines the current research status and application of augmented reality technology; secondly, it elaborates...

The Polbeng II ship has the following main dimensions: Lpp = 9.8 m, B = 1.8 m, H = 1 m, T = 0.6 m, and Vs = 21 knots. Based on the calculation, the ship’s resistance is 5.7 kN, and the engine power is 98 HP. In the ship’s transmission system, the gearbox ratio is 1:3, the shaft has a diameter of 13/4″,...

Jacket offshore platform structure are the big space structures usually used in field of offshore oil engineering. Local damage of platform may occur in the action of emergency, and will result in the whole failure of platform under extreme loads. So it is necessary to analyze the failure mode and damage...

The Chinese government has formulated a policy that, in principle, is no longer a closed community. The existing closed area and unit compound should open gradually. The policy has aroused widespread concern and discussion. We use the Dijkstra algorithm to simulate the district road network. Based on...

VLAD (vector of locally aggregated descriptors) is a type of global features extracted from the image, which is always used in image retrieval. Although VLAD is effective, it still needs to improve. VLAD is obtained by accumulating residuals, ignoring the number information of descriptors in a cluster....

Mesoporous silica FDU-12 with different morphologies has been successfully hydrothermal synthesized under static or stirring conditions by changing the water-bath temperature. The as-synthesized materials were characterized by X-ray powder diffraction(XRD), N2 adsorption-desorption, scanning electron...

Ship-to-air missile system operational effectiveness approach is proposed, the missile system operational effectiveness evaluation credibility index system is proposed, the missile system operational effectiveness evaluation credibility analysis method based on fuzzy AHP colony decision-making is proposed....

This article presents the results of experimental and finite element analysis of mistuned free vibration of bladed disk models. Blade-to-blade variations of bladed disk assemblies result in local zoning of vibration modes as well as amplitude magnifications, which primarily reduces the high cycle fatigue...

Fluorescence resonance energy transfer (FRET) is the radiation process which the donor molecules at the excited state transferred capacity to the acceptor molecules via remote dipole. Aptamers can specially recognize its target molecules. Based on these principles, a sensitive and selective uorescent...

Taking the rural green building assessment system of the Northwest China as the research object, the paper would discuss regional adaptability of the green building assessment system. The paper puts forward the assessment target facing the dilemma with the development of the desertification of rural...

This research focuses on braking pad back plate of disc brake system. Firstly building original 3D model of brake pad and the prototype is manufactured , then 3D model is imported into ANSYS for modal simulation and noise bench test with prototype is conducted. To verify the validity and precision of...

A low grade oxidized zinc mine of Lan ping contains 6.52% Zn with a high ratio of oxidized zinc ores and a little sulfide minerals.In order to utilize this kind of ore,the test treats oxidized zinc ore as a kind of valuable mineral and an experimental study on beneficiation is carried out in which the...

A bridge structure may sustain damage either when subjected to severe loading like a strong earthquake or when its material deteriorates. Monitoring the structural health of a particular structural system involves a damage identification process that comprises detecting, locating, identifying type of,...

In order to improve the uneven utilization of resources, electricity power loss and QoS (Quality of Service) in the cloud environment, a multi-objective VM (virtual machine) dynamic Scheduling mechanism is proposed. The VM in the cloud environment is dynamically managed via designing the strategy of...

The aim of this research was to evaluate the influence of culture substrate on the phytochemical contents of fruiting bodies and spores of 3 different varieties of Ganoderma lucidum. Three varieties (Longzhi No.1, Hunong No.1 and Xianzhi No.1) of G. lucidum were cultivated in two culture substrates (wood...

This paper discusses the condition acquisition controller's realization method based on IEC 61850 standard communication protocol. It presents a design scheme about main structure and key technologies. First, it studied the device's hardware requirements, communication environment, work flow, then designed...

In order to reduce the nonlinear error, a new method of nonlinear error correction in a wide frequency range is presented. In this method, firstly, the frequency of the measurement signal is divided into three bands. In each frequency band, linear fitting is used to pretreat the difference between the...

Accelerate the construction of a high standard of basic farmland is the primary task of the implementation of the National Land remediation planning, delineation of the high standard of construction of basic farmland in key areas is an important content of the high standard of construction of basic farmland....

Time series forecasting using ARIMA (AutoRegressive Integrated Moving Average) is well-liked and tested machine learning technique for projecting upcoming values depending on historical data or previous observations. Although ARIMA is a strong and popular technique for time series forecasting, because...

The usage of Fractional Order (FO) controllers for an electrical vehicle system is examined in this research (EVS). The auxiliary batteries, controller, charging port, onboard charger, electric motor, power in veelectriction battery pack, DC-DC converter, transmission, and thermal cooling system are...

Every month, women experience menstruation or menstrual periods. The menstrual period greatly affects the daily lives of women. This menstruation often causes other symptoms such as menstrual pain, back pain and even acne. Things like this can actually be overcome by women. There are several foods and...

Design and implementation of a system is introduced, which is designed to provide tools for station-management in the regional telemetry seismographic network, with a visual way to process data on management and geographic of seismographic stations. Web services including WebGIS, station-information...

Effects of different addition amounts of rare earth (RE) and Si-Ca on inclusions, the microstructure and mechanical properties of Steel 35MnSiCrMoV were investigated by accordingly using optical microscope, scanning electron microscopy with energy dispersive spectrometry, transmission electron microscope,...

Considering the limited resource and capability, a mobile database model based on secret sharing protocol is proposed. The system achieves the mechanism of the least privilege with the use of secret sharing protocol, which guarantees that only the mobile client can get both the key and the cipher text....

This paper first introduces the concept and allocation status of virtual reality technology, by analyzing the current computer-aided design problems in the toy, this paper also describes the virtual reality techniques advantages in toy design, mainly referring to improve the innovation of design, shorten...

Cough is a common respiratory symptom, caused by the inflammation of trachea and bronchial mucosa or chemical stimulation. Compared with other sounds, cough sound has a typical uniqueness which makes it possible to analyze the differences between cough and other sound performance. Since coughing is a...

There are more meaning of researching the operational efficiency of aerial radar jamming equipments and the method of using them than ever while the new aerial equipments have been widely used in air force. A novel computational method of Radar Jamming cover area is proposed in this paper, which is different...

In light of the present condition of the enterprise production management system and single management means, management is not standard, most people are involved in the production management, production management standard is not unified, the production management problems such as difficult maintenance....

As cellular structure, high strength honeycomb is continuously pursued for last decades. This paper presents five typical reinforced honeycomb structures as new creative geometric configuration. Dynamic numerical simulations were conducted by means of finite element analysis. Corresponding dynamic response...

Chitin has good biological activity, but the nature of the shell element is difficult to dissolve in water severely restrict its application in many fields. Through chemical modification, as the hydroxyl group to change its characteristics of different preparation of chitin, and were characterized by...

By using the multi-physics simulation software COMSOL, the pre-breakdown-heating phase in the electro-thermal breakdown of conductive water is modeled. In this COMSOL model, the Joule-heating module (jh) and the electric circuit module (cir) are used together to simulate the time-evolution of the temperature...

From the geographic view, rivers or lakes in America often run through several states or even across the half country which makes it difficult to categorize by their natural locations, let alone to allocate them. In an economist's perception, economy in states can have huge discrepancy which directly...

It first introduces widespread emergence of network the branches increased and security issues during the enterprise development and internationalization process. To use the VPN technology for network construction based on a comprehensive analysis the enterprise network system requirements and security...

The insulation photovoltaic Building component is a new kind of energy-saving building material with the function of heat insulation and new energy transformation. Because of combustible organic insulation materials and fire risk caused by control circuit fault, the fire performance must be concerned...

Patch-based texture synthesis has proven to produce reasonable results for a wide variety of texture classes. In this paper, an effective adaptive texture synthesis method is proposed based on the popular Image Quilting and the general framework of Hybrid Texture Synthesis (HTS) algorithm. Our algorithm...

Spherical joints are wildly used in parallel mechanisms. This paper applied polytetrafluoroethylene (PTFE) on the surface of spherical joints, aiming at reducing both frictional resistance and clearance of this kind of joints. Firstly, three kinds of solid lubricants were coated on flat samples and their...