Advances in Engineering Research

Supersonic shock wave/turbulent boundary layer interactions were simulated by employing three popular engineering turbulence models, namely Spalart-Allmaras(SA), k- , shear stress transport(SST) over a 24ºcompression ramp at Mach 2.84 and a 11º×11º double-sharp fin plates at Mach 2.91. Comparisons of...

This paper analyzes the defaults of traffic model applying in campus road in China, such as lacking simulation of vehicles, pedestrians and bicycles under mixed traffic flow. An improved multi-value cellular automata model is proposed for revealing complex traffic phenomena for pedestrian-bicycles and...

Provision of raw water for community needs is a direct effort in improving community welfare as the main key of regional economic development. Embung Bolong is a place to supply raw water which is managed by PDAM Nunukan through IPA Nursery and IPA Pasir Putih to meet the needs of the community in Border...

With the development of UAV technology and low-altitude economy, path planning is an important link for UAVs to perform tasks in urban mission space. In urban environments, UAVs face many challenges, such as complex building layouts, large amounts of green belts and so on. RRT (rapidly exploring random...

The paper proposed a control method based on the electro-hydraulic servo loading system used on the bearing test rig for aircraft engine. Aiming at the nonlinear problem of the system, a control method is designed based on RBF neural network. This method uses the BRF algorithm of neural network on the...

A fully dispersive fifth order nonlinear wave propagation model for mild current, water level and depth was established theoretically considering energy and topography factors. It satisfied both the frequency dispersion and nonlinearity. By omitting the 5th order terms, the lower order model was in consistency...

With the rise of blogs, social networks, and the vigorous development of cloud computing and Internet technology, the data is increasing at an unprecedented speed and cumulative, the big data era has come. The basic concept of big data, key techniques and the use of there are a lot of doubt and controversy....

The exploitation of Lamadian oil field P layer has been in the ultra-high water stage, there is a serious inefficient circulation of injected water. Low cost asphalt particle profile control technology has been researched and carried out in this reservoir. While, there is still no guidance for size-selection...

World widely speaking, the power industry is an important area of carbon emission and carbon reduction. It is also one of the main carbon trading market. Carbon-constrained electricity market will profoundly alter the original model of electricity production and electricity trading. Consequently, the...

This article discusses the role of reactive oxygen species in plants,composition of antioxidant system,composition and role of antioxidant enzymes, and effect of heavy metals stress on the individual antioxidant enzymes activity.Under normal circumstances,in plants bodies, reactive oxygen species production...

Solar resources assessment is one of the basic works for planning and construction of PV station. Conventional method of solar resources assessment cannot meet the rules made by China’s power section to limit the output power fluctuation of PV connected to grid. This paper proposes a method to evaluate...

The sodium metavanadate samples are digested in hydrochloric acid, and the content of matrix element sodium is directly measured by inductively coupled plasma atomic emission spectrometry (ICP-OES). The optimum dilution ratio is disposable obtained by optimizing the weight of the sample and the volume...

This paper focuses on the optimal design for the immunity and accuracy of the Speed measurement and location in the maglev train. First, based on the analysis of the error model of the MEMS-IMU, an algorithm which based on Mallat wavelet transform and absolute state recognition for cumulative error correction...

In this experiment, the 7-year-old Ziziphus jujuba ‘Zhanshanmizao’ tree with the same tree potential was used as the test material, and different time (December 5 th, 2016 and January 16 th, 2017) was selected to be treated with their sheds and exposed to uncovered open fields for comparison. The contents...

Carbon quantum dots (CQDs) had been widely applied in the metal ions detection area due to their excellent optical properties and low toxicity. Herein, a series of CQDs with different sizes were prepared by a facile but effective hydrogen peroxide (H2O2) oxidative method using activated carbon as carbon...

This appliance falls in CCHP, generating electricity, heating and refrigerating by photo-electronic effect and photo-thermal effect of solar energy. This appliance consist of butterfly mirror, terminal emitting optical fiber, surface light emitting fiber, thermosyphon, water-cooling system, solar cooker,...

The rapid development of the subway contributes to public transportation, but at the same time the emergency evacuation of subway traffic puts forward higher requirements. At present, most of the studies on the emergency evacuation of the subway have neglected the differences in the mobility of different...

BIM as a use of the establishment of the model to achieve the construction project cost of high-precision calculation This article describes the basic connotation and development of BIM, and demonstrated the technology show in the power engineering cost control and dynamic strengths and future prospects.

According to the shortcoming of present helicopter wind tunnel test by manual operation , an automatic control technology based on network communication was developed for the helicopter winder tunnel experiment. It includes the test standard process and different pipelines between command communication...

At present, the solar ejection refrigeration system’s solar collecting system mainly adopts water as medium for solar energy absorption and then as the heat source of ejection system, which leads to a result that the system must be provided with components like water tank, and circulation pump, etc.,...

Human daily activity recognition is the foundation of automatic Ambient Assisted Living (AAL) system. In the paper, we propose a sensing model which can capture the discriminative spatio-temporal feature of human motion in an efficient way. The object space is separated into distinct discrete sampling...

The work studies the results of the heat exchange process simulation through the bond of various types, the measurement of heat transfer resistance of the enclosure structure of operated buildings in Moscow, Stary Oskol and Belgorod. In addition, it studies the measurement results of the heat transfer...

Au/HZSM-5 catalysts were prepared by negative deposition-precipitation method in this paper. XRD/Uv-vis/TEM/NH3-TPD/FT-IR technologies were used to analysis the characterization of prepared catalysts, and the evaluation of the catalysts was carried out by methane adsorption experiment. XRD and TEM showed...

According to the characteristics of deep diversion tunnel of Jinping II Hydropower Station located in the high field stress condition, for its surrounding rock, i.e. marble, the conventional triaxial test and pre-peak unloading test are carried out. Then study on its mechanical characteristics through...

There are time-varying parameters within the performance index function and dynamic model of home energy optimization (HEO) which contains thermostatically controlled appliances (TCAs) and electric vehicles (EVs). And TCAs and EVs may be off-line. Adaptive dynamic programming (ADP) can not be applied...

LRU policy showed the good performance and has been used widely in modern computer, however, the accesses mode of the application is not all preferences of LRU algorithm, there were some drawbacks. In the paper, by researching the existed policy about LRU, we propose an adaptive policy base on the LRU,...

In recent years, many country are vigorously developing natural gas mining technology, the supersonic expansion dehydration is a new natural gas dehydration methods, which has many advantage. Based on this background, this paper aimed to analyze the flow field in supersonic expansion dehydration of Laval...

R-80 is a regional passenger aircraft with twin-turboprop engine designed by PT Regio Aviasi Industry. In this era, R-80 existence in Indonesian aviation market is still not perceived, while the purpose of creating R-80 is to supply local demand. Meanwhile, most of airlines in Indonesia prefer using...

The pressure difference control is realized by the pressure drop when the room infiltration air passes through the room opening such as the door crack, and its effect is determined by the room air distribution and the geometric characteristics of the opening. In this paper, two kinds of air distribution...

Protection and control circuit is indispensable part of the precious, precision electronic equipment which use 24v power supply. This paper introduces a kind of protection and control circuit which is superior performance, simple, economical and practical of 24 v power supply control circuit.

The high contact resistance of the corrosion products is more likely to cause contact failure. Based on service condition and natural environment of transmission and transformation equipment, the deterioration mechanism of electrical wires was investigated from the view of corrosion. The surface morphology...

This paper, based on the damage effect of electromagnetic pulse (EMP) on satellites, firstly analyzes electromagnetic leakage elements of typical satellites, emphasizes the coupling process between EMP and satellites and its damage effect on satellites, and conducts preliminary simulation on antenna...

An iron-cobalt alloy ceramic coating grows on the surface of Q235 carton steel in situ by the micro-arc oxidation technology; and the phase composition, elementary composition, surface morphology, surface roughness and thickness of the ceramic coating are analyzed by X-ray diffractometer, energy disperse...

Cooperative Road Hazard Warning (C-RHW) is an event-driven and active road safety application and is performed through direct V2V/I2V communications. Whether or not a C-RHW application could work well is much dependent on the application-working pattern, the current spatial-temporal relation with the...

With the expansion of the electric power system data business requirements, study the security of electric power data network is more and more, the safety of the structure and function of the network itself got extensive attention. This paper studies the accord with the characteristics of Henan electric...

Interactive video system based on Android is a new mobile software application which enables the mobile phone users to make and browse interactive videos by themselves. This system can automatically display the corresponding things' additional information by users clicking them in the video and also...

As the energy issue is getting more and more serious with the economy development of the world, the research on the issue of transport and logistics sustainability is becoming more and more popular for researchers all around. For one respect, the restriction of energy consumption in transport sector...

A new type quartz melting furnace to avoid shortages of traditional quartz furnace such as high cost of graphite electrode, low production efficiency, high quartz melting furnace energy consumption is tested and simulated in this paper. Simulation is done as well as the experiment to test distribution...

The improved kinematics method based on the orthogonality of rotation matrix and matrix block is presented for MOTOMAN - HP20 robot to improve the computing speed of the robot kinematics.Firstly, according to the robot structure, the forward kinematics model is established with D-H method. And for the...

The actuator servo system is an essential part of the missile system, whose characteristics directly affect the missile's performance. An all-digital electromechanical actuator (EMA) system is designed based on field-oriented vector control principle, and its prototype is developed, which has fast transient...

RFID technology is the use of radio frequency signal through space coupling to achieve non-contact transmission of information through the transmission of information to automatically identify the purpose of technology. ZigBee protocol stack structure is composed of a set of the layer of the die block....

Based on the finite element analysis software OpenSees, the flexural behaviors of ECC-RC composite beams reinforced with FRP bars is analyzed. The results show that cracking, yield and ultimate moment increase with the increasing of height replacement rate and the increasing rate slow down gradually....

A traffic states detection method is proposed to represent the road traffic conditions accurately and reduce labor intensive monitoring work in this paper. The edge of image, which is named as edge characteristic, is applied to describe the number of vehicles running on the road, and the average density...

With the continuous development of computer technology, its application increases gradually in various disciplines' teaching. The application of computer technology in dance teaching also has certain feasibility. On the one hand, computer audio technology provides corresponding music for dance teaching,...

The foundation of our nation is agriculture. India’s economy is mostly based on agriculture. So many people dependent on the agriculture in the country. The people involved in agriculture is reduce as threats there increase. Weeds are the one of the main things which is affecting the crops in agriculture...

Virtual power plant (VPP) is trading entities in the new generation of power markets that can rapidly aggregate various energy sources, create value by leveraging a large number of flexible resources, and bring volatility to the grid. To address some of the issues in the development of VPPs, this paper...

In block A channel sand bodies spread in small scale; the drilling rate is low; level of well control is low; under the current condition of well pattern, the accuracy sand body prediction is low; the accuracy of fault recognition is low; the injection and production relationship of single sand body...

There is a cooperative willingness perception based routing algorithm is proposed in this paper. The average duration of messages forwarding is utilized to measure the cooperative willingness between nodes; moreover combining with the parameter of contact probability between nodes, the relay node can...

With the development of new types of urbanization in China, the layout and planning of towns is increasingly influenced by large cities and the design of towns tends to be the same as that of cities. As an emerging city construction model, "Slow City" model is devoted to protecting the original natural...

The center cable drill rod for coal mine can transmit electric power signals from hole top to bottom while establishing a two-way high-speed information channel between devices at hole top and bottom. This paper introduces the design of outer pipe and inner structure of the cable drill rod and researches...

In this paper, the model predictive control (MPC) method is researched for energy management problem of plug-In hybrid electric vehicle (PHEV). Multi-step Markov prediction method is selected for the prediction. Dynamic programming (DP) is chosen to solve the optimization problem within the prediction...

Experience has proven that, in search of innovative solutions it is often necessary to return to the known fundamental principles of the functioning of agroecosystems. The only problem remains the question of giving the “outdated” solutions a certain manufacturability and their adaptation to the current...

7-year-old trees of Ziziphus jujuba ‘Zhanshanmizao’ were used to study physiological indexes. Using SA spray the trees with different concentrations in January 30 th, 2017. Study the changes of water, Organic nutrients (starch, soluble sugar, soluble protein, and free amino acid) and antioxidant system...

In order to study deformation feature of multi-point micro laser shock forming and distribution of impact surface morphology, single pass with multi-point forming experiments on copper T2 were conducted with Spitlight Nd: YAG laser ; Typical paths were introduced to characterize forming shape and distribution...

It has been the work focus of Chinese government to extend the coverage of basic endowment insurance for urban workers, and it prompted a rapid growth of the fund's income and accumulated balance. This improves the financial sustainability of the system temporarily, and increases the future responsibility...

. Indoor air quality (IAQ) in university laboratories plays a crucial role in safeguarding the health, comfort, and performance of teachers, students, and other staff, especially in densely populated cities such as Dhaka, Bangladesh. Forecasting IAQ in laboratories is challenging due to frequent changes...

Tea has always been China's traditional agricultural crops, and is one of a large number of agricultural exports. However, in recent years, China's tea exports encountered the biggest problem is pesticide residues,developed countries or regions to limit pesticide residues in tea standards have hindered...

Aiming to the problem that the battery energy of the node is limited and not easy to be replaced in WBAN, this paper proposes a new node sleep strategy based on compressed sensing and sparse representation theory (NSS-CS), which using the compressed sensing theory to compress the test samples, and adopting...

With the rapid development of modern manufacturing industry, Model Based Definition has been widely concerned in aerospace, and carried out in-depth promotion and application. A MBD information extraction method based on STEP AP242 is proposed to solve the problem that there are heterogeneous hardware...

BP neural network algorithm has powerful calculation ability, but the algorithm has some shortages such as low convergence which limits its application, so improving BP algorithm has become a matter of concern in the fields related. Based on analyzing improvement methods wildly used today, the paper...

One-side sewing technique can avoid the space limitation when processing the pre-shaped textile composites compare with the traditional sewing method. In order to adapt to the changes of parameters such as the thickness of the sewing material in the different operating environment , this article focus...

Strength and creep performance is the most important in the frozen soil mechanics, It is an important basic basis on engineering foundation construction in cold region and artificial freezing method in shaft sinking. However, the nature of the frozen soil creep is complex, as well as the restriction...

Use block-by-block method and classic second-order central difference approximation to discretize its temporal direction and spatial direction, respectively. This new scheme can effectively solve a class of time fractional diffusion equations with initial boundary value conditions.

A symmetrical Gemini cationic asphalt emulsifier of 1,3-bis(3'-coconut oil amide propyl-dimethyl ammonium chloride)-2-hydroxy propane was synthesized by two steps reaction of coconut oil acyl propyl dimethyl tertiary amine (PKO), epoxy chloropropane and hydrochloric acid. The structure of the product...

In this paper, a dimethyl phosphonate doped (P-doped) silica sol was prepared from a tetraethyl silicate inorganic precursor and applied to silk fabric as a flame retardant finish through the sol-gel process. The X-ray photoelectron spectroscopy (XPS) analysis and scanning electron microscope (SEM) images...

Through the analysis of the way of Labor-saving flitting, a new smart pneumatic balance crane which combines micro-control technology with pneumatic technology is presented. Firstly, the overall design of the system is completed. Secondly, the principle of each functional module is described in detail,...

The objective evaluation of teachers’ teaching quality can stimulate teachers’ teaching enthusiasm and improve teaching quality. In this paper we apply an algorithm based on Boolean matrix in rough set for data analysis on the evaluation of teachers’ teaching quality, optimize the evaluation index and...

In this paper, based on the phenomenon that Colpitts oscillation circuit is hard to work when condensation occurs on the surface of the quartz crystal, a new dew point measurement device is developed, and it is mainly composed of a quartz crystal and a Peltier module. This measurement way is both rapid...

The prior problem of ecological residential community's construction and development is site selection. The article starts with relevant concepts of ecological residential community, with site selection problems as breakthrough point; it analyzes site selection's environmental requirements from both...

The smart substation construction is developing rapidly, and operation maintenance unit must be faced with the new problems which are brought about by the new technology. Based on more intelligent substation debugging, acceptance and operation experience, the main technical supervision points of the...

The optimization of activator used in SnBi lead-free solder paste were carried out by welding experiments with the spreadability and the spot morphology as the main comment indexes.And the properties of the composite activator which was mixed by two activator possessing good performances were studied....

The 150 tpd facilities of sewage sludge pump directly into precalciners was set up in cement plant of 3200 tpd clinker production. The experiment was performed at the sludge feed rate of 4t/h, 6t/h and without sludge. It was showed from that the use of sludge as alternative fuel did not affect clinker...

Femtosecond pulsed laser(800nm, 120fs, 1000Hz) was used. And methods of element doping, abaxially rolling and moving were applied. Problems of conflict between transmission and inner-stress, and large area asymmetric of diamond like carbon (DLC) films deposited by pulsed laser were overcome. Hydrogen-free...

Cache replacement policy is one of the caching techniques, including the recency based algorithms and the freqency based algorithms etc. Although combining the recency and frequency, the LRFU algorithm could not dynamically adjust itself to adapt to the practical circumstance. This paper proposes an...

Distributed generation has extensive economic benefit and social benefit, but it costs too high to connect to the grid directly and it is too difficult to control. Therefore, the matching of power electronic equipment interface is very important. In this paper, we use a shunt active power filter model...

The process of Continuous Integration and Continuous Deployment (CI/CD) has become even more complex and risky, and the failure analysis steps have become dependent on the use of correlation-based approaches, which tend to correlate symptoms instead of looking into the root cause of the problem. In this...

Optical lock-in amplification is a cornerstone technology for extracting weak optical signals buried in noise by leveraging phase-sensitive detection and frequency-domain filtering. This review systematically analyses the mathematical foundations of Optical Lock-in Amplification, including signal modulation,...

As for the traffic hidden danger generated by pedestrians when they are distracted while crossing the street, this study selects the typical area of the signalized and unsignalized crosswalk collects the data of them by artificial investigation and draws the conclusions. It is concluded that on the two...

The traditional Decision-Making methods leverage the awareness from one side of operators and evaluate the state of environment and devices statically. However, as the correlations of cyberspace's actions become more and more complex and the cyberspace confrontation is always changing, it cannot meet...

The paper presents the results of researching the influence of the mode of creating photocatalytic coatings of glass substrates by the method of reactive magnetron deposition on their bactericidal properties. Tatanium dioxide (TiO2) is in the basis of used film photocatalytic coatings. When depositing...

In order to solve the problem of low strength and disintegrate easily using ordinary Portland cement-high sulfur tailings filling, we used blast furnace water quenching slag instead of Portland cement which was regarded as cement material to manufacture whole tailings paste for underground filling. We...

The moisture content of sludge in sewage plant is 80%-85%,In order to disposal, sludge need to be deep dewatering. The test added in composite conditioner with calcium superphosphate in different proportion. Measure the moisture content ,ph and volatile organic matter. The experimental results show that,...

In order to realize underwater automatic welding in deep water environment, an automatic welding equipment, which is composed of truss structure, welding mechanism and mobile walking mechanism was designed and tested in the recent research. The bent fatigue strength check was carried on the driving part...

At present, the information communication network of the directly affiliated units of energy firms has many problems, such as diverse access mode, weak operation and maintenance strength, and insufficient network bandwidth, leading to the consequences that the network construction standard is differentiated,...

How to choose the turning parameters for shaft part? This paper established an optimization model based on minimum multi-procedure costs. The constraints of the model include machined surface roughness, power of lathe, parameters of lathe, and turning allowance. Different from the existing optimization...

At present colleges and universities in our country have initially created diversified funding system for impoverished students, such as award, loan, financing, subsidies and reduction. Impoverished students' finance management contents in colleges and universities are becoming richer and richer. Using...

With the rise of the Internet plus, companies have embarked Internet plus road. To implement business process resource sharing is one of the main ways for enterprises to achieve Internet plus. Due to the participation of many enterprises, the business process resources on the Internet are massive. It...

A pot experiment was designed under drought stress condition to study the effect of different starter nitrogen fertilizer on photosynthetic characters in the leaves of relay strip intercropping soybean at branching stage. The Pn, Gs, Tr were measured, WUE was calculated. The results showed drought stress...

Heavy equipment has several types depending on its function, and one of them is the dozer unit. Dozers are considered the most efficient heavy equipment units for mining activities, mainly digging, pushing, and pulling material. The transmission is a component of the Bulldozer’s drive system that regulates...

Strain energy of dam body and its sensitivity to the deformation modulus of foundation are taken as objective functions, robust feasibility constraint of stress is proposed with the consideration of uncertain deformation modulus of foundation, and a robust optimization model is established for shape...

For the question of BS11 surfactant's poor deliquescence into consideration, the hydrophilic structural of amphibious surfactant is changed and the new kind of hydroxyl sulphonate betaine surfactant BS13 is developed. We researched that the interfacial tension,IFT, between the sewage solution of the...

Loess landslide has a wide range of influence, great harm and difficult to control. Background of Panan landslide in Gansu, by field investigation and sampling analysis of indoor dynamic test method, under the action of dynamic stress, the vibration times of Nf less than or equal to 30 times failure,...

The blade of the turbo blisk often cracks due to rotor’s resonance. The research on influence degree to the turbine blade mode with different constrains of blisk can gain the universal fixture in the modal tests. For this purpose, the vibrant characteristic of blisk was gained by FEM, as well as the...

Based on the simplified material constitutive model and strip analysis method, computer program languages is used to analysis the flexural behaviors of ECC-RC composite beams reinforced with high strength steel bars. The results show that cracking, yield and ultimate moment increase with the increasing...

The seismic response analysis can be performed using the design speed response spectrum for the long and middle period structure. But the research results about the formula for calculating the damping effect correction coefficient of design velocity response spectrum in the long and middle period range...

In order to solve the early minor diseases such as micro-cracks, water penetration and anti-skidding attenuation in the old asphalt pavement, the existing high-performance modified emulsified asphalt material was used. The layer paving construction technology of “synchronous chip seal + consolidation...

In this paper, Dimensional Dynamic Fuzzy Comprehensive Evaluation Model[1] is devised to evaluate the water availability ability. Water availability can be understood by two main aspects: environment and economy. In the modeling process, the evaluation can be transformed into two-dimensional form. Dynamic...

On the basis of the analysis on product conceptual design, four problems have been found. In order to solve the problems, the article puts forward a kind of communication system for the product conceptual design based on enterprise network community. In the system the Internet users are divided into...

In this study, La0.6Ce0.2Pr0.05Nd0.15Ni3.55Co0.3Mn0.4Al0.3(Cu0.96Be0.04)0.45 alloy was heat treated for 4 h in argon atmosphere at 923, 1023, and 1123 K, respectively. The results of scanning electron microscopy indicated that surface morphology of the heat-treated alloys changed significantly. Before...

A pot experiment was conducted to study the effects of intercropping with Solanum photeinocarpum and Solanum nigrum from two climate-ecology regions (Ya'an campus and Chengdu campus) on photosynthetic characteristics of eggplant under cadmium (Cd) stress. Five treatments were used in the experiment:...