Advances in Engineering Research

Environmental pollution, climate change, energy tension is now the global prominent question, the development and utilization of renewable energy to become one of the key measures to solve these problems. Wind power acts as a kind of safety, environmental protection, clean, abundant renewable energy...

In this study, tensile, inter-granular corrosion, and impacting tests were carried out to investigate the mechanical property characteristics of X65MO-316Lclad hot rolled coil trial produced by 2250mm hot continuous rolling line, which is applied for the manufacture of offshore line pipe. SEM (Scanning...

In this paper, researchers establish and verify a method on the determination of B2O3 in boron nitride through volumetric titration. Three criteria including proportionable system error, extra system error and statistics error are investigated in detail. The results show that, this method meets the requirements...

Subcritical 1, 1, 1, 2-tetrafluoroethane (R134a) extraction is a modern extraction technology in natural product perpartion. The optimized process of extracting astaxanthin from Antarctic kill (Euphausia superba) through subcritical R134a was systematically investigated in this work with respect to the...

We first present a formula on the conditional expectation by the regular conditional distribution function. Using this formula, we can obtain a corollary under the condition of independence which applies in many cases. Then some examples are given to illustrate the applications of the results.

Since the 16th CPC National Congress, Integrated and coordinated urban and rural development into national strategies. Integration of urban and rural road passenger transport is an important support for the development of urban and rural integration, Promote integrative construction of urban and rural...

The bus power balance is an important index to quantify the power system basic data. In view of the current shortage of power imbalance evaluation at single time section, in this paper, imbalanced power is regarded as a normal distributed random variable and the its historical data is statistically analyzed....

In order to research the quality coordination mechanism of logistics service supply chain in condition of bounded rationality, based on research method of logistics supply chain optimization model of evolutionary game theory of intelligent algorithm, evolutionary game model for quality coordination of...

Shale gas and coal-bed methane are very important unconventional resources. Shale gas and coal-bed methane are the most effective supplement of the conventional fossil energy, and the quantity of these resources are abundant. So the shale gas and coal-bed methane have been gained comprehensive attention...

With the worsening of environmental pollution issues, applications of molecular biological techniques to the field of environmental pollution treatment have also drawn wide attention. These techniques can contribute to efficient treatment of environmental pollution through microorganism, and boast the...

Because the weights and thresholds of BP neural network usually adopt random assignment, there is a problem of low accuracy in software reliability prediction. In order to solve this problem, a software reliability prediction algorithm (MHPSO-BP) based on multi-layer heterogeneous PSO optimized BP neural...

To adjust the parameter PID of boiler water level control.Analysis of the problems existing in the Marine boiler water level control.[Method] Using fuzzy neural network, Fuzzy neural network is the combination of neural network and fuzzy logic. the traditional PID control and fuzzy neural network control...

It’s important to access the status change of switchgear in switching station for condition maintenance. With regard to the online assessment for the resistance of switches in the switching station with 3/2 connection mode, linear equations can be established on the basis of real-time current measurements....

Steel riser-guards are installed on offshore jacket platforms to provide protection to risers against vessel collision. As risers transport the crude oil which is highly flammable, a collision between vessel and risers has the potential of causing severe structural damage to the platform and injuries...

This paper researches on the characteristics of the foam system chosen for CO2 foam flooding in the low permeable oil fields. In view of the actual situation of the oilfield high temperature, high salinity and water injection difficulty, the selected agents must also meet the requirements of stability...

Magnetic nanomaterials have received tremendous attention in the past years due to their unique magnetic responsiveness and corresponding wide applications in many fields. Herein this paper presents several methods to prepare monodisperse magnetic microspheres through a facile hydrothermal technique....

According to the collected geological data, this thesis has systematically summarized the development feature of folds of No.5 coal seam in Chenghe-Second coal mine by counting and analyzing the setting of regional geological structure and characteristics of mine geological structure. Based on the above-mentioned...

Power flow diagram is an important tool of modern Energy Management System (EMS) for system operators to schedule the operation and maintenance plan, examine security situation and dispatch in real-time. Manually creation and maintenance of power flow diagram of large scale power grid is time consuming...

The keratin was extracted from the wool by sodium sulfite dissolving system. And then different ratios of keratin/polyethylene oxide (PEO) formic acid solution were prepared. The rheological properties and conductivity of solution were studied. The influence of the proportion of keratin/PEO formic acid...

In order to enhance the effectiveness of on-the-job training, and hone the communication and coordination skills of trainees while improving their professional and technical skills. This paper discusses the significance of homework sharing in vocational training, the principles of task selection, the...

Frequency automatic tracking is a main characteristic of ultrasonic power system, especially in the field of biological decomposition. In this paper, after analysing characteristics of multiple peaks of transducer, a reliable power control and frequency tracking strategy is introduced. It is based on...

The application of ultraviolet absorption detector (UV) and circular dichroism (CD) detectors in series in HPLC systems has been increased in recent years. In this work, an effective method to determine the enantiomer concentration on line in chiral drugs was explored. Ibuprofen (IBP) racemate was applied....

A hybrid technique of additive manufacturing and subtractive process has provided a new solution combining product design and control by software. Wire Arc Additive Manufacturing (WAAM) process wins well-respected because of its low cost and high efficiency of deposition, nevertheless the process has...

Because the exhaust heat is multitudinous and the level of the heat utilization is various, it is significant to exploit the appropriate technologies to convert the waste heat to electricity. In this article, the assessment methods for the exhaust heat power generation system and the comparison on the...

In order to study the influence of the change of hydraulic oil temperature on the control characteristics of the electro-hydraulic servo valve, simulation analysis was carried out based on AMESim software. According to the structural characteristics and working principle of the dual-nozzle type baffle...

The Smart City being expedient and reliable is safe, convenient, cheap, regular, scheduled as well as modern city transportation system. The Trans Semarang buses run simultaneously on public roads, there is bound to be inaccurate arrival time information. Consequently, there is the need for a system...

Electrocardiography (ECG) is an important physiological signal that reflects the autonomic nervous system (ANS) activity. The correlation between ANS measures and sleepiness has been used to assess the drowsiness of a person from spectral analysis of heart rate variability (HRV). Power spectral analysis...

The fractional derivative can be regarded as the Volterra integral of the Abel kernel function and its value is not only closely related to the value of the current moment, but also to the whole history. Therefore, the application of fractional calculus to some viscoelastic materials can well describe...

With the improvement of living standard, vehicles have been widely used in life. However, health problems associated with in-vehicle air quality happen more frequently. Recent researches on in-vehicle air quality control measures for human health are reviewed in this paper. The problems and challenges...

In-depth analysis and study of six unified device fixed value and setting principle, combined with the application of the device setting in the relay protection setting calculation software. Intelligent setting package with protection device common libraries and granular fixed value was designed and...

The course Data Mining, one of the core courses in many majors, has evolved from Data Mining oriented Warehouse, Web Data Mining to the current Big Data Mining. This paper has explored course teaching on discussion in the technology of big data mining and course practice in real data mining. We propose...

Deep basement excavation inevitably induces stress changes in the ground leading to soil movements, which may cause adverse effects on existing tunnels. Although basement-tunnel interaction has attracted increasing attention recently, the influence of circular basement excavation on metro tunnels is...

The Bonded Logistics Center (PLB) as the Government's Economic Policy Package issued in September 2015. This clarified by Regulation of the Minister of Finance No. 272 Year 2015 on Bonded Logistics Center (PLB) plus the Regulation of the Director General of Customs and Excise No. 1 of 2016, Regulation...

Mobile computing is a term used to refer to a variety of devices that allow accessing data and information from anytime, anyplace, anywhere. The mobile networks are often deployed in complex environments in which to provide a secure transmission and also to detect the hackers. An adversary can capture...

Land and climate are important land potentials in agricultural ventures. Land other than as a medium also grows water storage for plants. Rainfall is the climate element of the water provider for plants. Clove Plant as one of the main plantation plants that are cultivated on farmland by the people of...

The paper sorts out the evolution of education in China under the influence of the epidemic in 2020, analyzes the advantages and disadvantages of pure online education and offline education, and draws follow conclusions: With current technology, the pure online education model cannot meet the educational...

Indonesia is a country that produces the largest coconut in the world. 35% of the coconut volume is coir. Coir is a waste that has not been widely used for construction work. The coir fibers have the highest tensile strength among other natural fibers and have resistance to compressive forces. In this...

Surabaya State University (Unesa) as an educational actor limits physical distance by implementing online learning activities to break the spread of COVID-19. Online learning is usually carried out at a maximum of three meetings and combined with face-to-face. However, in the even semester 2019/2020...

In 1990, Mongolia experienced a volatile change in the social, political, and economic aspects of its society. In particular, inequality, poverty, and unemployment increased exponentially and the differences in development between urban and rural areas increased sharply. During this period population...

One of the actors managing national quality infrastructure in Indonesia is accredited calibration laboratory that regulates the strategic role of facilitating trade activities. Metrological traceability of accredited calibration laboratory is an inherent entity, which determines the validity of calibration...

There has been a shift from traditional classroom instruction to online-based instruction at most universities, including Unesa. As a result, students and teachers collaborate to implement learning using supplementary resources. The happiness of today’s students will increase dramatically as a result...

The railway bridge design and construction must precisely follow the technical standard due to the high impact load and small tolerance on the track component. Building Information Modeling (BIM) can provide the details and accuracy needed for a railway bridge’s design and construction process. The purpose...

The microclimate environment of urban blocks is directly related to its spatial form, which in turn affects the quality of urban public space, especially in science and technology urban blocks with high requirements for outdoor public space quality. In response to the lack of comprehensive attention...

The vent riser is one of the important components of natural gas transportation engineering, that can ensure pipeline safety, and reduce accident risk. Exploring its seismic response under different peak accelerations is of great practical significance for earthquake prevention and disaster reduction...

The phenomenon poses the most insidious demands of urban administration, referred to as urban flooding, which usually causes extensive damage and disruption. Therefore, it is crucial to use sophisticated modeling methodologies that suit current technologies to reduce the potential of these risks. This...

Radial gates play an important part in the comprehensive benefit of hydropower stations. Failures of radial gates are usually related to their dynamic characteristics. To appropriately evaluate the dynamic characteristics of the radial gate, the effect of the pier should be considered. In this paper,...

USV (Unmanned Surface Vehicle) is a tool that can facilitate human work. Conducting surveys, searching in vulnerable areas, mapping, or even exploring for a long time can be done easily by USV. USV technology is currently experiencing very rapid progress. However, this sophistication cannot be separated...

The main purpose of this paper is using modification of nanoparticle layers to increasing the hydrophilic surfaces and enhancing the evaporation behaviors in stainless steel plate. When the products being made, use three different kind of fluids, acetone, ethanol and water to testing the benefit for...

A field experiment was conducted to investigate the single and combined of lead (Pb), cadmium (Cd), and cooper (Cu) on the growth and development of rice plants and the uptake of these heavy metals by rice. The results revealed that the growth and development of rice plants were more affected by combined...

In order to simulate the flow structure accurately and find out the inducement of unstability in a centrifugal compressor with casing structure, three different cases of models were established. By contrasting the simulation result of Case1 and Case2 with experiment data, the accuracy of grids model...

Because the Asphalt concrete pavement heavy-duty rutting, low temperature cracking and anti-fatigue cracking problems are prominent, the author mix the BRA rock asphalt and polyester fiber into the asphalt mixture preparation of wide temperature field asphalt mixture in accordance with various proportions....

The length, number of layers, plane and longitudinal heterogeneity of injection wells of the second class reservoir are serious. The fractures are used to relieve the contradiction between the plane and the strata, and the channel edge and get the remaining oil potential difference between site type....

Stress redistribution induced by excavation often results in tensile zones in the surrounding rock mass. It is of great theoretical and practical significances to analyse the localizations of deformation and damage and to study the complete stress-strain relation for mesoscopic heterogenous rocks under...

Comparative analysis of various electric heating elements used for room heating is presented. Advantages of flat plasma-sprayed electrical heaters in terms of energetic and thermal parameters are shown. Dependencies of specific surface power and temperature distribution through heater substrate width...

Elastic index is the required important parameters in the theoretical analysis and design calculation of components. Mechanical testing method and electrical measuring method are commonly used in engineering mechanics experimental. This article discusses the ultrasonic method which is used to measure...

A series of polyimide was prepared based on 3,3',4,4'-biphenyltetra carboxylic dianhydride (BPDA) with noncoplanar, 1,2,4,5-benzenetetracarboxylicanhydride (PMDA) and 4,4'-diaminodiphenyl ether (ODA). The effect of the polymer structure and imidization temperature on the thermal stability and mechanical...

This paper presents a real-time online monitoring system scheme for power transmission line to achieve the objective of giving early warning to disaster and making decision for extra-high voltage power transmission line. Monitoring terminals with a S3C6410 ARM11 processor as core is equipped on the line...

.The selection of Lyapunov function is depth studied with adaptive parameter identification, where a kind of simple first order system with two unknown parameters is taken as an example. The study shows that the selection of Lyapunov function is completely free, and the proportion of the parameter identification...

Health services are in times with rapid development and ever-changing. With the treatment of an aging population structure, disease prevention and control is gradually transformed into the new medical model, which requires a new generation of digital sound engineering technology to digital, intelligent...

The paper based on the urban floating population represents a significant share of Shenzhen Pingshan new district as an example, analyze the economy, identity, cultural level, of present population. According to the development of Pingshan new district; divide present community into four types, include...

Segmented polyether-polyester polyurethanes with an amorphous hydrophilic soft segment phase were prepared from 4,4’-diphenylmethane diisocyanate (MDI), polybutylene adipate glycol 2000 (PBA2000) and polyethylene glycol 1000 (PEG1000) with 1,4-butanediol (BDO) as the chain extender. Further more, the...

This paper presents a technique to accurately estimate the state of unmanned research and rescue helicopter, Two Kalman filters were used, one for the gyroscope data and the other for the accelerometer data. Our approach is unique because it explicitly avoids dynamic modeling of the system and allows...

This The study of pepper quality at South Bangka in Bangka Belitung islands will build a high benefit for many sectors and considerations, primarily on mapping and development of pepper comodity in the future. This research was conducted to study the quality of Petaling 1 and Lampung Daun Kecil (LDK)...

IEC 62439 defines the parallel redundancy protocol (PRP) which offers zero disruption time for network communication. This paper evaluates the reliability of PRP based substation process bus considering protection functions. Two typical process bus solutions are discussed for a typical transmission substation....

The vision-based hand gesture is an important problem in the field of human-computer interaction since hand motion and gesture could potentially interact with computers in more natural ways. This paper is focused on control of mobile service robot based on vision-based hand gesture recognition. The database...

The finite element software FLUENT is used to analyze the equivalent thermal conductivity and the thermal balance of composites reinforced by line, sinusoidal and pulse bending nanopaper during the heating process. The equivalent thermal conductivity does not change linearly with the increase of thermal...

Before going public, low voltage circuit breaker must be tested, the rated operation short circuit breaking capacity and the rated limit short circuit breaking capacity test are particularly key. Therefore, the short circuit test device must be accurate and reliable, and the parameters which meet the...

The topic of oscillation in spring and block systems in the inclined plane is fairly complex and rarely to be discussed in oscillation research topic. Apart from theoretical calculations, physical quantities in this topic can also be calculated through experiments. This research determines one of the...

Theoretical issues of the use of a fire-fighting soil-thrower for extinguishing forest fires with the presentation of its practical use in conditions of high fire risk are considered. To assess the effectiveness of the use of new units in the article, a study of the information base for the use of existing...

In order to promote the outlet temperature and heat collection efficiency of solar air collector, this study puts forward a folded baffle solar air collector, which can improve the heat collection efficiency of the collector by enhancing the air turbulence inside the flow passage and increasing the heat...

In order to obtain the effects on boiler operation when pulverize outlet temperature changes, testing on a 300MW power plant. The results illustrate that when pulverize outlet temperature rised form 70℃ to 94℃, temperature of gas center 0.4meter、0.5meter and 0.6meter apart from A2 burner all rised, temperature...

Government regulations refer to teachers’ professional work in implementing studying evaluation, one of them is teachers’ ability in compiling evaluation instrument in class activity. Teachers must always be innovative with technology development appeared that time. One of teachers’ responsibilities...

The measurement of complex networks is based on graph theory. Firstly, the basic character of complex networks was analyzed. Then complex networks models such as ER model, small-world model, BA scale-free model were researched. Its construct rule, evolvement process and dynamics characteristic were also...

In order to limit the induced voltage, 220kV high voltage single core power cable needs reliable grounding in the actual operation. Metal sheath will produce induction overvoltage when lightning intrudes the cable conductor. Inductive overvoltages can have a variety of adverse effects on cable performance....

Current and voltage measurements play an important role in the power industry and provide necessary information for power systems to measure, control, and relay protection. At present in the national 110 KV, 110 KV, 330 KV, 750 KV power grid has been fully tested by optical current transformer, at the...

This paper presents a comprehensive sensitivity analysis on daylighting, visual comfort, and energy consumption of automated venetian blinds for open-plan offices. This research is using an integrated thermal and lighting simulation model in Grasshopper. The purpose is to identify which factors significantly...

Islamic financial literacy and entrepreneurial orientation are important factors needed by micro and small enterprises (MSEs) to run a business and achieve its performance. This study will examine the effect of Islamic financial literacy and entrepreneurial orientation on business performance. The research...

In this study, it is researched four problems in relation to the leakage of water pipe network within a campus water supply system and established mathematical models. Firstly, superior water meters without corresponding subordinate water meters were removed at first, and then the tiered relationship...

Coral reefs and benthic foraminifera are efficient pollution bioindicators for predicting heavy metal pollution due to their great tolerance to high ecological pressures, so that these biota are used as test animals in monitoring the accumulation rate of heavy metals of marine waters. The purpose of...

The electro-hydraulic semi-active suspension uses a hydraulic cylinder as the damping adjustment element. It has the advantages of high power density and high reliability, and is widely applied to SUV models. However, it has problems such as unknown road surface excitation and response lag, which will...

The results of spices in Indonesia are very abundant. Its use is also very much like for cooking, cosmetics, medicine, and so on. To maintain the quality and quality of spices are usually stored in dry form. For this reason, equipment is needed in the drying process. This study aims to investigate the...

Health and energy are two important elements of life that must be constantly monitored. In the present pre-endemic or post-pandemic age, it is critical to monitor individuals to ensure that crucial standard operating procedures, such as wearing face masks, are followed. Furthermore, any measures to reduce...

Operation and maintenance of a dam that does not follow established procedures will not only reduce the effectiveness of the dam in question. However, they can also endanger the safety of the dam. The fact that the risk of a dam is mostly caused by inadequate exploitation and maintenance. The Palasari...

Reinforced soil retaining walls have been widely adopted in China’s expressway and high-speed railway subgrade projects due to their superior performance, cost-effectiveness, and environmental benefits. To address insufficient anchorage length caused by spatial constraints during construction—a critical...

Fracture splitting processing, which has board prospects in the precision manufacturing of engine connecting rod, has been widely applied in production so far, and laser pre-processing a fracture splitting notch which is a notch as the fracture initiation source for the subsequent splitting process is...

The slope stability allowed reliable index is 4.2 in specification of rockfill dam for 200 m height, critical slope safety factor of stability is 1.3, but there is not a fitted safety standard for rockfill dam of more than 200 m height and critical slope of this project. Summarizes the failure probability,...

At present, highway traffic noise prediction models mostly use the equivalent continuous A-weighted sound pressure level to predict the noise within the country as well as in abroad, and they also usually use one line source to simulate the noise source in the simulation analysis of highway traffic noise,...

The world is rapidly urbanizing, it is more and more important to coordinate the balance between rapid urbanization and sustainable development. To make contribution to explore this project, we determine a metric model, named Three E Metric Model, to assess the degree of the urban smart growth. First,...

Vanadium oxide-Multi walled carbon nanotube (VOx-MWCNT) and vanadium oxide-Single walled carbon nanotube (VOx-SWCNT) were prepared by sol-gel process and systematically investigated. Results reveal that if MWCNTs are incorporated with VOx to form the VOx-MWCNT composite film, the VOx can strongly interact...

Application of finite element method, the mechanism of metal flow and weld line movement of U-shape parts with transverse welding line and U-shape parts with longitudinal welding line was investigated, respectively. Research results show that: for U-shape parts with transverse welding line, amount of...

Methods of calculation of thermal processes of the isolating materials are considered, in problems of nondestructive diagnostics of the main and distributive power stations. Theoretical justification of calculation of thermal processes of the multilayered isolating structure was given. On the basis of...

The design of good performance and long service life, crankshaft affects the engine performance and fuel economy. It can reduce the consumption of materials and manufacturing cost. Thermodynamic calculation of mixed gas cylinder is analysised based on P-V diagram drawing, It compared with theory and...

Vast photovoltaic powers connect into power distribution network Distribution Network. These PVs are large in quantity and scattered, make grid difficult in monitoring, which will bring challenge to the safety and stabilization of power grid. It is very necessary to get related monitoring data of PVs....

Two 240 t/h circulating fluidized bed (CFB) boilers are choosed as the research object, through test CFB boiler parts surface temperature, surface conditions and the parts surface area, according to the standard ASME boiler body heat loss. The results showed that special separator inlet section of CFB...

This work discusses performance analyses of a flywheel energy storage system rotor using ansys. Design of a rotor based on 3D modeling and simulation is presented, the flywheel theory is also studied. A basic static structure and modal analyzes were carried out to evaluate the performance of the model...

In this paper, a new method for predicting the value of wind power is proposed, which combine fuzzy information granulation and support vector machine.Firstly,extract the original data and make fuzzy information granulation of the original data.Secondly,do the regression prediction of the granulated...

The Erd”s-Szekeres problem was an open unsolved problem in computational geometry and related fields from 1935. Many results about it have been shown. The main concern of this paper is not only show how to prove this problem with automated deduction methods and tools but also contribute to the significance...

Flexible ball bearing is used as a component in wave generator of a harmonic drive gear system. During the revolution of the flexible bearing, the races of the bearing are subjected to elastic deformation by the shape of the elliptical cam. Thus, a reasonable mechanical model is established based on...

In northwest China, the widespread Laterite of Neogene Pliocene series (N2) is the direct aquifuge above Jurassic coal seam, which plays a vital role in the protection of shallow water resources. With the rapid growth of coal production in this area, the N2 Laterite was severely damaged by the extensive...

Full text search engines widely used today still have no math searching function, which brings inconvenience for people finding their scientific documents with mathematical query words. It is necessary to research and develop the theory and technology of mathematical expression retrieval. This paper...