Advances in Engineering Research

In order to study the influence of locator layout on assembly quality, the side-body outer panel of auto B pillar was chosen as the object. Based on response surface methodology (RSM) and 3DCS, the quadratic response surface models were built up. The multi-objective function was optimized to get the...

The accuracy of short-term wind power forecast is important to the operation of power system. Based on the real-time wind power data, a wind power prediction model using Elman neural network is proposed. In order to overcome such disadvantages of Elman neural network as easily falling into local minimum,...

The principle of constant gradient field NMR is same with the logging expert system, the state-of-the -art technology in the world, wherein, gradient design and 2D spectrum inversion algorithm are adopted to quicken the instrument measurement speed while the diffusion coefficients of a fluid can be measured...

Aiming to break through the assumption that ship's transverse (mainly roll) and longitudinal (mainly pitch and heave) motion are not coupled in traditional sea-keeping study, the mathematical model to study coupling coefficients of transverse / longitudinal motion was proposed, and ship's roll, pitch...

This paper presents a class of adaptive ant colony optimization algorithm and proves its convergence properties. The global searching and convergence ability are improved by adaptively changing the pheromone trails evaporation factors and decreasing lower pheromone bound. Markov process analysis is used...

The content of high ash fine slime in raw coal of Shiguai area in Inner Mongolia is high, the load of flotation system of coal preparation plant is heavy and the flotation clean coal ash is difficult to meet the local standard lower than 15.00% thus resulting in a serious waste of slime resources. This...

Based on the solution of Laplace equation in parallel using FVM with unstructured hybrid mesh, the paper studies the calculation of added mass for underwater vehicle. The method is accurate and efficient, which is applicable to both simple shape bodies and complex shape bodies with large curvature and...

The large eddy simulation method is used to simulate the flow field in the hydrocyclone with double conical structure, and the result shows that existence of the secondary swirl has a vital effect on the separation. The tangential velocity in the swirling flow could be regarded as a kind of rankine-like...

This paper mainly discusses the weight factor that influence on cubic NURBS interpolation curve shape. Based on the existing curve and surface interpolation, the thought, the criterion and the concrete steps of the convexity-preserving of the weight factor of cubic NURBS interpolation curve are provided,...

In this paper, a fault tree was built for the issue of fuse misfire, which was significant for personal reliability. Herein, the misfire of a certain fuse was regarded as a fault mode. Therefore, a fault tree for the fuse misfire was successfully built. And the descending method was utilized to solve...

the transformer is one of the most important equipment in power system, the maximum short current rated current is 25~30 times or more when an outlet short circuit occurs,short current will produce great mechanical force which is hundreds of times larger than the normal operation, Under the action of...

This research aims to recognize the feasibility of seaweed farming in Tanjung Harapan Village, Nunukan Selatan District, Nunukan Regency. The population in this study is all seaweed farmers in the Tanjung Harapan Village. The sample was taken by 15% of the existing population of 20 seaweed farmers. Data...

The quick transient response technology of low-voltage differential linear voltage regulators (LDO) has emerged as a research hotspot due to the growing need for dynamic power management in 5G and IoT devices. This article reviews three advanced LDO designs: 1)The dynamic high-impedance charge pump LDO,...

The traditional calibration phase just can meet the he static tower condition at pier, but can not use for the dynamic target. The Fast Correction Phase model is built for Ship-borne Dynamic Platform of tracking and control radar. The anti-cosine method is put forward to calculate phase difference. Then...

6 kinds of chlorinated organic pollutants, such as chlorobenzene, 1, 2- dichlorobenzene, 1, 4 - dichlorobenzene, 1,2,4-trichlorobenzene, 2, 4 - dichlorophenol and pentachlorophenol, were analyzed in 5 main water source for 50 food processing companies in Nanning. The health risk assessment of the chlorinated...

this work used the improved Shan-Doolen model which is based on Shan-Chen model, Combined of non-equilibrium extrapolation boundary and fully developed boundary treatment, and finally established Two-phase flow model. Applying this model, we firstly simulated the separation of two phase immiscible flow...

This paper design a set of remote monitoring and testing equipment aimed at the inclination of the transmission tower, and proposed a methodology of evaluating risk degree to evaluate the risk level of the current state of the tower according to the test data. This paper gives a set of adjustment equipment...

A large number of research results show that the accuracy of the material model largely determines the accuracy of the numerical simulation results. In this paper, the model of Kiewitt8 single-layer reticulated dome with a span of 40m is established by ANSYS/LS-DYNA. The difference between the model...

Three gradations of fine iron tailings are selected to prepared surface mortar for external thermal insulation on outer-walls for replacing natural sand. The working performance and mechanical performance of the surface mortar for external thermal insulation on outer-walls are studied. The results show...

Fresh air temperature supplied by an Environmental Control System (ECS) in a manned spacecraft is generally at 16 ,which is a low air temperature if it is blow to the astronauts directly. In order to improve the thermal comfort, the supplied air temperature should be increased by reducing the amount...

Based on the field hydrology test, topographic map, remote sensing data and cross section survey data, the influence factors and the degree of the muddy tidal flat in Jiangsu coast area are studied, and the stability criterion for determining the stability of the three stages is established. The stability...

The nylon-12 as raw material of balloon catheter and paclitaxel as coating drug, the paclitaxel drug-coating balloon was made by directing coating method. This paper investigated the effect of paclitaxel drug-coating on the balloon physical performances by Hydraulic Pressure Tester, Laser Diameter Gauge,...

According to the problem that the intelligence is not high of the soccer robot, using the mechanical theory as a guide, making some mechanical analyses and calculations on the pressure and transmutation states of chip kick mechanics, and conducting optimal design too, then making the structure of chip...

The paper studies topical problems of land degradation taking place on the territories of irrigation systems. The authors attempt to propose the most promising approach to reveal transformations occurring on agricultural lands of northwestern Caspian Sea region. The work implements geobotanical indicators...

More and more scientific problems are now using GPGPU to solve. However , the existing GPGPU did not give a good solution for the problems such as recursive calls and multiple calls problems. Our proposed NKGPGPU model is a descriptive model that solves the key issues of the NK-GPGPU, including hardware...

Energy is an important strategic resource of a country, and its stable supply is of great importance to the security of a country, especially economic security. Due to diversification, stability is the basic view of ecology. Based on the market concentration index and diversity index in industrial economics...

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

in this paper, the main control part of the multifunctional intelligent medicine box is composed of AT89S52 microcontroller, ISD1700 voice chip, DS1302 clock chip and so on. The human-computer interaction is achieved by the LCD12864 and independent keyboard, and using the piezoelectric thin film sensors...

Mobile devices such as smartphones, tablet computers are widely used over the past years. In such mobile Internet environment, how to authenticate a mobile user is a crucial problem. However the single factor based authentication methods are not suitable for high security level applications. Based on...

GIS has been introduced to Jining’s air quality automatic monitoring system. The system provides the client with easily available services of high quality. In order to meet the need of big data storage of the monitoring system we designed the distributed cloud storage framework to deploy MongoDB storage...

In a dual-drum shearer, the drum's height is mainly adjusted by a height-adjustment hydraulic system. However, the hydraulic system is prone to failures, since oil is likely to leak induced by the abrasions of key parts. In the present work, based on the analysis of system failures and the requirements...

There are many factors that cause the flutter of the wing of the aircraft, and one of the factors is the wing opening trepanning. In order to explore the changes of the flutter speed of the wing after trepanning, the software simulation method is adopted to analyze the flutter speed .MSC.Patran and MSC.Nastran...

The Overhead Weapon Station(OWS) has a system composed of complex types, and its interactive subsystems make it difficult to establish the optimization model of multidisciplinary collaborative simulation. In this paper, Adams was used to establish OWS mechanical system model and Simulink to the control...

With the rapid development of the Internet of Things (IoT) and electric vehicles, the limitations of traditional wired charging in terms of flexibility, safety and maintenance costs have become increasingly prominent, and wireless charging technology has become a key direction to break through the bottleneck....

The purpose of this paper is to propose a new intelligence services mode. The authors analyze the advantages of this services mode compared with the traditional ones. Design the structure of whole file and location file involving head information and body information, and take water depth data as an...

Faced with the challenge that resource depletion and environment deterioration, an important energy-saving measure by enhancing electric motor efficiency has been adopted around the world. With the development of measurement uncertainty of electric motor, for conventional motor efficiency evaluation,...

Phosphogypsum (PG) is one of the major solid wastes disposed on land. The safety evaluation of PG stacks is highly dependent on the correct characterization of its properties. Laboratory tests were performed to determine the physical and mechanical properties of PG, including its gradation, hydraulic...

This article describes one investigation of Okhotsk Sea sediment in the northwest Pacific margin, the study based the use of the advanced tool called Echo sounder system,made a large scale acoustic sweep to the east slope of Sakhalin Island.Through the acquisition of the echo signal, the multi-channel...

In recent years, roads are deteriorated due to increasing traffic volumes, and they require extensive reconstruction which should be environmentally friendly. This can be done by using new additives and waste and recycled materials in road construction. Recently developed warm mix asphalt technology...

Firstly, the graphite oxide was fabricated with the modified Hummers' method, and then it was dispersed in an aqueous solution along with TiO2 nanoparticles. The graphite oxide was peeled off by ultrasonic method and graphene oxide (GO) was obtained. The abundant functional groups on the GO surface make...

Spatial controls are import and requisite methods in Planning Environmental Impact Assessment to normalize the type, distribution and scale of industries. The traditional methods, such as matrix-based and Delphin-method assessment techniques, could easy identification of conflicts and trade-off between...

Reactors are widely used in power systems because of their important functions. Its series connection with reactors in the places where outlet breakers are can increase short-circuit impedance and limit short circuits' current. And its parallel connections with capacitors in wave filters can limit harmonics...

Constant direct current stimulation has facilitation for cellular growth of many histiocytes. This paper primarily introduces systemic, detailed development and achievement of software for this system. The system can accomplish controlling action of peripheral circuitry through computer interface. The...

Object: To explore the feasibility and effects of temporary intestinal drainage in the surgical treatment for the neonates with necrotizing enterocolitis. Methods: A retrospective analysis was conduct on 42 cases of newborns with extensive and multiple intestinal necrosis found intraoperatively, all...

Nanostructured semiconducting metal oxide (SMO) gas sensor can be fabricated with flame synthesis by combusting a premixed fuel-oxidizer mixture doped with a selected metal precursor in the stagnation flow configuration. Particle size and film thickness of the SMO sensor are the most significant parameters...

The traditional estimate method adopted man-made calculation as for the satellite tracking and control link level. But this model was simple for the most of calculation was adopted the experience data, and did not think over the complicated influence factor. In order to do better on the estimate precision...

Association rules mining is an important model in data mining. The classic Apriori algorithm for Association rules need scan database many times and generate a great deal of candidate itemsets. This paper proposes a new algorithm for mining association rules based on matrix. The algorithm scans database...

China Certification Centre for Energy Conservation Product found in the investigation that the standby energy consumption accounts for about 10% of the electricity consumption of Chinese family. This paper presents an energy-saving design by human body induction in order to cut off the power supply when...

According to the distribution characteristics of workflow time node, this paper studies the time node representation of a structured workflow and describes in detail the definition of workflow time node in Product Data Management, then puts forward a tree design model. From the time property of different...

The influence of carbon and alternating oxic-anoxic model on sludge bulking and chemical oxygen demand (COD), ammonia nitrogen and total nitrogen removal effect are investigated under alternating oxic-anoxic model in sequencing batch reactor (SBR). The experiment performed for 23 days and 30 days instage...

To understand the migration transformation rule of heavy metals in the process of extracting proteins from the sludge with enzymatic hydrolysis, this experiment studied the total amount of heavy metals in the sludge and the its morpHological change characteristics in the process, and the results showed...

The author designed a program for utilizing residual pressure of water pipeline, by which theoretical analysis and calculation were performed and the small residual pressure energy power generation device was developed. Theoretical analysis and calculation results show that the maximum input power firstly...

Based on ordinary Portland cement, in this paper, direct shear test and unconfined compression test were conducted on Nansha Guangzhou soft silt blended with admixtures such as lime or gypsum respectively to research its mechanical property and get the correlation between reinforced silt’s internal friction...

Air revitalization technology of environment control and life support system (ECLSS) should be developed for the long-time orbit mission of manned spacecraft. Two kinds of molecular sieve materials, TC-5A and PSA-5A, have made on request by China's manned space development demand, and the dynamic model...

This paper gives a brief review ofthe development and utilization status of the renewable energy in China and explains the importance, urgency and feasibility of the development and utilization of the renewable energy regarding strategic choice for national adjustment of energy structure. The renewable...

The hot tensile test of BR1500HS ultrahigh strength steel was carried out on Gleeble3500 thermo-mechanical simulator. The process was predicted by finite element simulation based on Freudenthal fracture criterion. Then, the Freudenthal fracture criterion is modified based on the relationship between...

The article discloses an increasing role of biodiversity in strategies of sustainable development of mountain areas. Unique character and attractiveness of mountain ecosystems due to significant biological, landscape and ethno genetic diversity and their sensibility to anthropogenic have been discussed....

Longchang Aqueduct is a reinforced concrete box deck type arch with clear span 200m,located in Guizhou Province of China, inclined cable-stayed buckle and cantilever erection is adopted for rib assemble. This paper introduces the arch ring of arch foot section of the construction of a unique process,...

The crankshaft is the important parts, engine crankshaft in multi-axis linkage machining crankshaft connecting rod journal fillet, due to the current solution is expensive, time consuming is too long, this paper proposes an improved scheme, make better able to take advantage of the present condition...

This study investigates the use of ureolytic bacteria, specifically Sporosarcina pasteurii, to enhance concrete’s self-healing capabilities through microbial-induced calcium carbonate precipitation (MICP). Ureolytic bacteria catalyze the breakdown of urea, leading to carbonate formation, which subsequently...

we take Germany as an example to derive a dynamic model which describes the relation between supply and demand. Through the data we apply least square method to fit the demand changing over time, as well as single objective optimization and radiation network to acquire the mechanism of distribution and...

When there is multi-variables in a sample, some samples which obviously disturb the relationships among variables are called outlier samples. However the presence of an extremely significant outlier sample tends to conceal some other outlier samples, which bringing great challenge to the identification...

SDN technology implements network deployment/management flexibility and network resource virtualization by the separation of the control plane and forwarding plane of the network. However, SDN technology faces the same problems as the traditional network does, that is the network can’t recognize the...

Medical waste disposal is an important problem. This paper firstly analyses the classification and present situation of medical waste disposal, then analyzes problems in the process management, and combine with related data to illustrate the necessity of medical waste disposal. Finally, the balance benefit...

Starting from the actual demand of logistics enterprise information management, vehicle scheduling problem model was established and the solving method of model was found based on the ant colony algorithm. At the same time, based on Android and MySQL database development environment, the paper carried...

This paper analyzes the case between U.S. and China Regarding China's Tax on Integrated Circuits. It evaluates on a country-by-country basis how they have fared in the specific case in which they were involved and in advancing their major trade policy concerns. Finally, it explores key issues and suggests...

Scientific articles are scholarly publications that present objective and verifiable information pertaining to study findings and literature reviews. These articles are typically disseminated through reputable scientific journals. The Open Journal System (OJS) is an open-source platform that facilitates...

This study investigates the transmission and current-voltage (I–V) characteristics of a 10-atom armchair graphene nanoribbon (AGNR) under a 90-V bias voltage using a Non-Equilibrium Green’s Function (NEGF) approach. The NEGF method is used to calculate the electronic properties of the AGNR, including...

Vegetation is the core protection object in nature reserve and establishing index sytem of the growth status of vegetation and analyzing the influencing factors are the basis of vegetation protection in nature reserve. Based on DPSIR model and the principles of science, comprehensiveness, difference,...

In the information age, the information flow of the editorial department is large and the complicated management system has been unable to meet the requirements of the rapid processing of massive information. In order to solve above problems, this paper design an office automation information management...

With the development of Internet and communication technology, the Internet data growth rapidly, and the type of network services varied. According to the different properties of the network services, network services classification is the foundation of many network applications, including network service...

A field study was conducted to investigate the effects of gap disturbance on the seedling establishment process of two native species. Seeds of Agropyron cristatumandStipa kryloviiwere reseeded to artificially created gaps in a degraded steppe in North China. There were seven treatments: shoot gaps and...

Pre-oxidation is widely used to remove synergistically algae, odor and natural organic matter (NOM) for drinking water treatment. Permanganate (KMn₄), ozone (O₃), and hydrogen peroxide (H₂O₂) in combination with polyaluminum chloride (PAC) coagulation for assisting the removal of NOM and disinfection...

The corrosion behaviors of AZ81 magnesium alloy with minor Gd addition have been researched in this paper. The results show that with the minor addition of 0.5-1% Gd, the microstructure of AZ81 magnesium alloy is obviously refined, and the spotted, high-melting point phase Al-Gd intermetallic compounds...

The cropping patterns as drip irrigation under mulch were assumed in the experiment with peanut variety "Fu Hua 17" to study the effects of different topdressing on photosynthetic characteristics and yield for peanuts. Five different treatments were carried out to determine the photosynthetic characteristics,...

China is a country with frequent geological disasters,a large part of the geological disasters and the damage of the roadbed is caused by the instability of the slope product . In this paper, the slope product is divided into the colluvial slope product ,the residual slope product and the alluvial slope...

Metal-Oxide Arrester(MOA) is to limit the lightning overvoltage and operating overvoltage, and protect other electrical equipment from overvoltage damage. The fault diagnosis of MOA is very important to power system, traditional test methods has several factors to restrict the efficiency and accuracy....

With the development of space technology, the space manipulator is widely used in space. Before launching into space to practical work, the manipulator needs to finish a large of number of experiments on the ground. In this article, we study on the mechanical arm to finding out the mechanical properties...

The extract of Ligustrum lucidum Ait. seeds, as green and eco-friendly corrosion inhibitors, have been investigated on the corrosion inhibition of Q235A steel in 1M hydrochloric acid solution at 60 by weight loss and potentiodynamic polarisation techniques. The inhibition efficiency of the extracts varies...

This paper discuss the using of the current PC104 bus technology and chemical oxygen demand (COD) on-site analysis technology to do the secondary development on the the seawater chemical oxygen demand analyzer (COD analyzer).The control system of the COD analyzer is formed by PC104 modules.Each PC104...

This paper starts with constructing the optimal process of shale gas economic indexes through selecting suitable statistics and prediction methods to confirm the major evaluation parameters of shale gas, such as single well recoverable reserves, single well composite cost and gas price. Then, economic...

To solve the problem that many test points are needed in radar antenna servo system when fault diagnosis is needed for this system, a new test points selection method based on Particle Swarm Optimization algorithm is researched. Test points selection is a many-target optimization problem which could...

Four-wheel alignment is an important parameter in design of automobile structure, directly affects the driving performance of a car. In view of the current vehicle four-wheel alignment and vehicle application using case, in this paper it introduces a kind of query design pattern of the four-wheel alignment...

By using fluid dynamics calculation, we start a numerical simulation research on flow fields of cylindrical and conical nozzle in order to choose a better structure of cementing ground anchor, at the same time, we also do hydraulic cycle experiments on cylindrical nozzle with different bore diameter....

Based on the single-line train graph editing, this paper proposes a cross-line editing train graph technology of the network operating. Firstly, according to the operation line parameters, determine the cross line site and the relation of each line; Secondly, according to the operation requirements of...

Insulation and corrosion performance of 10kV overhead insulated conductor is better than that of ordinary overhead bare conductor, it can avoid trees, kites, wires and the strong wind causing interphase short circuit and grounding accident, so as to effectively solve line tree contradiction and line...

For battery and super-capacitor hybrid energy storage system capacity configuration, the hybrid energy storage system multi-objective optimal allocation model is proposed. The optimization goals were economic cost, reliability of power supply,and the balance of supply and demand. The constraints were...

In the design of analogue integrated circuit, layout optimization is essential for achieving higher performance, reliability, and yield. The study presents a comprehensive comparation of two dominant layout techniques, which are common-centroid and interdigitated, applied to the optimization of two-stage...

In this article, we analyze two conditions of changing of water temperature with time: reducing of water temperature naturally and pouring hot water into the bathtub. According to heat-transfer principles, there are three ways for heat to reduce: convection effects, radiation effects and thermal conduction...

The traditional Role-Based Access Control(RBAC) model[1] is widely used in enterprises, but it's control granularity is too single and it's permissions configuration is too complex. This paper introduces the concepts of coarse-granularity and fine-granularity[2], and puts forward a RBAC model that supports...

In this paper, we use experiment to work on our own design of the dimple plate heat exchanger and the experimental result is compared with the heat transfer characteristics of the flat plate under the same experimental conditions.The test result shows that, under the given inlet temperature condition,...

Target uniformly accelerated motion, when SNR is almost zero, only using DCFT accumulation method can not achieve the goal of uniformly accelerated motion detection effective accumulation. To solve this problem, derivation and analysis of the echo signal model and the characteristics of the signal model...

It is very difficult that experimental data collection was carried out in the small holes directly.And because of the rheological properties of non-newtonian fluid being complex, its transmission parameters in the channel, people often were depended on the single factor experiment chart or experience...

As Brake-By-Wire technology matures, ideal distribution of front and rear wheels braking force was available for PHEV through electro-hydraulic braking. In order to study the impact factors of regenerative braking recovery rate of this system, PHEV traveling on the flat and level road is analysed theoretically....

Resource reservation is an important part of the resource management in Large Distributed System such as cloud computing. An architectural framework for specifying and processing co-reservations in cloud computing environments is presented. Compared to other approaches, the co-reservation framework in...

This paper conducts the research on the novel phosphorus flame retardant epoxy resin model and that the corresponding flame retardant performance. Research will be introduced to the phosphorous epoxy resin curing agent of the structure, synthesis of phosphorus curing agent, curing agent with flame retardant...

Natural gas is a vital component of the world's supply of energy and a clear energy. Underground natural gas storages are underground facilities for storing natural gas. Optimization on tubing sizes for preventing corrosion in underground natural gas storage well is mainly to prevent erosion. In order...

A soil column-cultivation leaching experiment was conducted in greenhouse to expose the HMs leaching characteristics in the process of EDTA-enhanced Phytoremediation of Cd- Pb compound contaminated soil by Zea mays L.(in seedling stage) under the condition of acid rain. Results showed that: (1) In the...

According to deviation of measurement when most of flowing turbidimeters are used to detect low turbidity water, a new usage of sensor structure is proposed through theoretical analysis and guidance. To meet the needs of the new usage, the constant current source circuit we designed shows its advantage....

This study sets double injections in the inlet of the flow field to study the new blunt body’s law of the flow patterns and the combustion efficiency under the condition of the two-phase flow. Compared with the vortex shedding mechanism of the V-gutter blunt, the computational results show that the vortex...