Advances in Engineering Research

This paper studies the problem of loading torque control for passive electro-hydraulic servo loading system with the external disturbance and parameter uncertainties. The state space model is established based on the nonlinear mathematical model of the system. Based on backstepping technique, an adaptive...

This paper investigates finite-time attitude stabilization of a rigid spacecraft in presence of external disturbance and model uncertainties. Based on Modified Rodriguez parameters (MRPs), attitude kinematics and dynamics are converted into state-space-like form, and then robust finite-time controller...

The general quarters of surface vessels is a kind of unique surface organizational form. This paper analyzes the essence of surface vessel disposition and the relationship with operational elements, and puts forward the basic idea of surface vessel disposition design, which provides a theoretical basis...

Soil has an important role in the construction of buildings and roads. Overall, the pavement must be strong enough to carry the weight of the vehicle on it. The strength of the road pavement depends on the bearing capacity of the subgrade. One of the efforts to increase the bearing capacity of the subgrade...

Along with developing the Mobile Learning System, Mobile Learning requires adequate facilities, such as a server as a storage medium and as a provider of an API-based web service, especially when there are more and more Mobile Learning users. And to ensure the quality of the web service, a system test...

The significant difference between the owner estimate (OE) and the winning bid price (COGS) is expected to cause non-optimal use of the budget for transportation infrastructure development which indirectly causes hampering the acceleration of regional economic growth in a region. This study aims to analyze...

This study presented the hydrochemical characteristics of groundwater in the “Songinohairkhan district”. We collected 111 samples from deep and dug wells in 2020 and major ions and pollution indicators were analyzed in the laboratory, and calculated the Water Quality Indices (WQI). The most dominant...

The investigation of flow behavior on the upper and lower surface airfoil was performed to know aerodynamic behaviors of airfoil in different Reynold Number. The more flexible simulation by using Computer Fluid Dynamic (CFD) has been used to analyze the behavior of flow which was addressed to application...

The Li River scenic area in Guilin has a natural landscape, which is an important part of the image of Guilin and has unique tourism value. Based on the grounded theory, this paper aims to explore the visitor perception of Li River Scenic Area, and builds a theoretical model of visitor perception factors...

This paper introduces the echelon utilization of retired power batteries and constructs a closed-loop supply chain including echelon utilizer. A cooperative mode between echelon utilization merchants and recyclers is established and compared with a non-cooperative mode. The following conclusions are...

In the post-industrial era, American society has undergone unprecedented development. With industrial civilization, human ability of conquering and transforming the nature is increasing while living environment is deteriorating; people's material life is more prosperous, and so is the consumer culture....

The ways of improving the social management technologies, including those for the coal-mining enterprises, in particular the development of the corporate social responsibility, especially in the labor relations system, are proposed in the article. Ignoring the challenges of the contemporary reality,...

Using pot experiment to study the effects of chicken manure compost (CM) on the production of dissolved organic carbon (DOC) and the degradation of p, p'-DDT in loam soil under three different water conditions. The objective of this study was providing theoretical basis for the remediation of pesticide...

From the concept of asphalt pavement recycling technology, The condition of old road is investigated and evaluated, In view of the problems of Urumq, pointed out that the applicable conditions and the advantages and disadvantages of the problems by the materials of Regenerant regeneration performance,...

Based on the fractal theory, this paper briefly reviews the origin and definition of fractal theory, and the concept of fractal dimension and its main calculation method. Then select one of the applications of fractal theory, in the application of recognition, to have a literature review. This paper...

In industrial processes large amount of cost and pollution produced are derived from the process of removing lignin (delignification) to make high-quality paper through the chemical pulping process. Rynchophorus ferrugineus are wood-feeding insect that have the capacity to degrade wide range of lignocellulosic...

Fuzzy Mathematics produced in 1960s, its formation and development do not want to give up mathematical accuracy, rigor, but to make the objective existence of some of the ambiguity of things and phenomena able to use mathematical methods to study and deal with. The so-called "fuzzy" means things are...

Arable land is the soul of land resources and has the core status of national food security. In this study, according to the resources(arable land natural quality and production capacity)and environment(soil environment)combined perspective, definition the concept of arable land health, explore the principles...

Power system,which has large-scale and complex structure,plays a significant role in national economy development.However, the system components will occur various malfunction or be an abnormal operation state due to various man-made and natural factors.This paper aims to ensure the power grid's safe...

The results of researches of asynchronous electric drives with the frequency control which are carried out for the purpose of establishment of causes and effect relationships between a control method, the implementable standard frequency converter of the Schneider Electric company (ATV-71, ATV-32) and...

The aim of this study was to evaluate the jamming efficacy of the airborne jamming pods, so we analyzed the combat operation requirements of them, simulated the jamming ability of the pods to jam the ground-to-air defense radar when the airborne fighting at different tactical backgrounds. The simulation...

Parallel operation control is one of the key techniques for high performance inverters with the features of excellent regulation, modular, high reliability, and redundancy. Through theoretical analysis of multi-inverters parallel operation model, the paper derived the conventional droop control method,...

Zijinshan gold mine once to mining local underground copper resources, result in the mined-out area which elevation from 460 m to 570 m, the upper pit continue mining down the deep,one of the main problems in the safety production is that the large-scale mining equipment work whether fall into the mined-out...

After the completion and operation of the HSR (short for high-speed railway), a portion of passenger train flows in the existing parallel lines will transfer to the HSR, which is going to bring changes in the structure of train operation diagram, influences the carrying capacity of existing lines and...

Recent advances in data acquisition technologies, have led to a growing interest in capturing high resolution rock surface images, Digital geologic maps that use a virtual globe interface, like google earth are a relatively new medium for presenting geologic data and interpretations. Models viewed in...

With deepening the construction of modern vocational education system, how to develop vocational education has become a major hot issues in education in China. Studying the characteristics of vocational education students is to be one of the precondition of how to develop vocational education. This paper...

Identification of the road slope is a key issue for automated manual transmission (AMT) to have its shift schedule adapt to the slope change during operation. To tackle the problem of frequent gearshift on ramp of the traditional shift schedule, a slope recognition method based on the vehicle’s acceleration...

This Balinese traditional landscape has an important role for tourism development in Denpasar City, as one most growing city in Bali Province. Denpasar City faces land use change from agriculture to other functions such as settlement, commercial and business area during the last five years. Traditionally,...

A variable structure observer (VSO) design problem solved by VSC (variable structure control) theory for system together with mis-matched uncertainty is studied in this paper. In the sliding mode, if developed systems are with mis-matched uncertainties, then invariance condition cannot be satisfied....

Hub motor has poor heat dissipation conditions limited by the installation space and working environment, high temperature rise in the process of operation has been a bottleneck to further improve the power density and torque density. The increase of power density means the increase of motor loss density...

Under-frequency load shedding (UFLS) is the last line of defense to prevent large-scale blackouts. The conventional UFLS scheme does not distinguish the location of the disturbance, and adopts the equal amount or equal proportion load shedding to distribute the amount of load shedding indistinctively...

Good Transportation Planning needs a good and accurate Transport Model. Trip Production Modeling, as the first step, needs to be accurate also. A new Trip Production Accuracy measure, incorporating R2 and Confident Interval values, has been proposed. An experiment to investigate the CI Behavior, due...

The aim of this research is to identify the effect of greywater filter composition sequence toward the water acidity level (PH). This research includes the production of greywater filter tools and water laboratory testing. Waste water from households were used as water samples. The samples were tested...

A workshop located in Tianjin suburb is selected using computer numerical simulation technique to study the indoor daylighting. The original daylighting design and optimized design are simulated and the leading indicators of natural light are compared and analyzed. Research results show that compared...

The paper addresses up-to-date approaches to model design of manufacturing processes and production systems. In view of high complexity and labor intensity of designing manufacturing processes and production systems, it is quite expedient to use computer facilities. It is most appropriate to predict...

This paper does corresponding test research on new type Mine Cementitious Materials from basic performance, strength of cemented tailings backfill and influence factor, fluidity of filly slurry and other aspects of the binding material. It can be seen from the test results that mining cementation power...

In order to determine the Olympic metal standing, this paper proposes a Verhulst model and a Grey Correlation Calculation model.. First, we select the Chinese perfermance from 1984 to 2016 as the research object. After data preprocessing for eliminating the influence of the host effect,we propose a Verhulst...

The research object of electricity marketing is electricity consumption market. It is of great significance for judging the trend of its development and guiding the decision maker to analyze the prosperity of electricity consumption market. This paper put forward an entire system from disposal to filter...

Reversible data hiding scheme can completely recover the original cover image after the embedded secret data have been correctly extracted, which has become a hot topic of data hiding. However, the embedding capacities of these existing reversible data hiding schemes are usually rather limited. In this...

The parameters of cassava mechanical properties are very important for the design, dynamic simulation and mathematical model of cassava harvester. In order to study the cassava stalks cutting force, stress, power indicators influencing factors, using WD-200B computer-controlled electronic universal testing...

Aluminum alloy is widely used in civil engineering because of the advantages of light weight and high strength. But the elastic modulus of aluminum alloy is only one-third of steel, and the deformation of aluminum alloy is more notable. Second-order nonlinear finite element analysis is performed to analyze...

Discussing Islam is inseparable from the figure of the Prophet Sallallaahu Alayhi Wasallam. His life history is the main attraction because it contains everything related to aspects of life governed by Islam. No exception in terms of government and the construction of the city of Medina, as one of the...

The spatial multimedia systems in the urban planning process is the latest innovation in urban planning and design activities. The development of this system aims to build the 3D spatial building information through online system, especially information on the spatial structuring of landscaping and historic...

The policy of 1+X certificate system has pointed out the way for the development of vocational education from the perspective of top-level design.Nowadays, the 1+X certificate system construction still exists the main organization construction and the communication mechanism is not perfect, which leads...

This study aims to: (1) obtain information on differences in result learning, students who use the project based learning model and the direct instruction model in DKTB, (2) answer the differences in result learning of participants students who have high motivation to learn, and students who have low...

Pectin, a biopolymer which is a natural additive, is widely used in various countries. In the food industries, it is used as a basis for functional food, including fat replacer. In Indonesia, however, pectin is still imported. Previous studies reported that pectin can be obtained through the extraction...

The use of biomass in co-firing in coal-fired power plants is one step to achieve the renewable energy mix target in Indonesia. Several aspects need considering to implement co-firing, including the slagging fouling aspect. It has the potential to interfere with process performance, reliability, and...

Forensic investigations frequently rely on facial sketches to identify individuals involved in criminal activities. However, since the human face is so diverse and variable, it is tough to predict the person from a forensic sketch expert’s sketch as they often lack realism and can be influenced by eyewitness...

In the digital era, sentiment analysis on social media has become increasingly important in understanding public perception of various issues. However, one of the main challenges in sentiment analysis is the issue of data imbalance, where one class (such as positive sentiment) may significantly outnumber...

The article is devoted to the current state of hydrogen economy and its prospects from the ecological and energy points of view. The article considers possibilities of applying hydrogen as efficient fuel for power boilers. The analysis of foreign experience in using hydrogen in power generation is considered....

Traffic congestion remains a formidable challenge in urban environments, significantly contributing to environmental degradation through increased emissions and inefficient energy use. Addressing this concern, our study explores the potential of traffic microsimulation for evaluating and enhancing urban...

This study summarizes the dynamics of urban expansion and urbanization in the recent 20 years in Khovd town, Khovd province of Mongolia. The study used fractal geometry to describe urban land use in Khovd using a geographic information system (GIS), and applied the relation of area and perimeter index...

Chainsaws are the most common piece of mechanized harvesting equipment used during logging operations, and their noise has a major negative impact on the health of the logging employees. The objectives of this study were to assess the noise level and noise effect of a chainsaw during felling and bucking...

Cities among other areas bear the brunt of the impact of climate-related disasters, especially cities that are located in the coastal zone. To build resilient cities, it is necessary to involve disaster risk reduction (DRR) in spatial planning (RTRW) because it has an essential role in both mitigation...

A mobile application for recording and calculating the ideal versine for the railroad curves maintenance program in the field is needed to help reduce time and effort in calculating. This study intended to create a smartphone-based application for railway curves versine and cant calculation to improve...

The rapid pace of urbanization and environmental challenges necessitates a paradigm shift in the construction industry. This fact drives the adoption of Artificial Intelligence (AI). Many researchers have conducted numerous studies. Still, there is a lack of a systematic review that includes optimizing...

An important step in analyzing information about brain images is image processing. Electromagnetic resonance imaging (MRI) images constitute essential details that the clinicians need to detect disease and make the suitable treatment. To improve the quality of the input images, image preprocessing is...

The increase in industrial activities that are not accompanied by adequate waste handling has led to a decrease in the quality of water used by the community. Therefore, a solution is needed that prioritizes the concept of a green economy, where waste can be processed into useful materials. One waste-based...

Response surface methods are widely used in reliability predictions due to their accuracy and simplicity. However, commonly used response surface methods have the following problems: 1) The fitting result is greatly affected by the number of terms in the final expression; 2) the existence of insensitive...

In order to reduce the impacts of wave on ship-mounted crane during operating the crane under rough weather conditions. A new type of shipboard crane telescopic sleeve anti-swing device was proposed. It uses the rigid constraints of the sleeve to reduce the swing range of the load, and through the universal...

Magnesium alloy has the great advantage of aluminum compared to other light alloy materials, so magnesium alloy is being carried out step by step in automotive applications and attracted attention of the automobile industry because of superior characteristics of recirculation replace previous material...

The phononic crystal (PC) has band gap characteristics, which can be used to design the band gap range by its microstructure, realizing the vibration suppression of specific frequency bands. Therefore, based on one-dimensional (1D) PCs, this paper proposes an approach to high-frequency vibration isolation...

This article is aimed to discover the effect of replacement rate of slag recycled aggregate on the compressive strength of recycled concrete. The slag has been crushed and sieved to regenerate recycled aggregate, than replaced the different ratio of natural aggregate with recycled aggregate in premixed...

Optical fiber sensing technology began in the mid-1970s, the earliest applied to the military side. Such as the US Navy with optical fiber sensor technology to monitor the structure of the ship submarine, and research and development of ultra-sensitive fiber Bragg grating sonar system; NASA with optical...

Abstract. Objective: To observe and explore the new adjuvant chemotherapy in patients with advanced ovarian cancer with tumour status, surgical effect and prognosis, the influence of provide a reference for clinical rational design of advanced ovarian cancer treatments. Methods: We select 32 cases in...

In 21st century, with the urban population increasing, conurbation is getting more and more crowed,traffic jam happens everywhere. In this case, utilization of the underground space has become an effective way to undertake this set of problems. Subway, a kind of urban underground transport, it is convenient,...

Linguistic variables usually take the form of a base term modified by a hedge in qualitative evaluations of multi criteria decision making problems. In this paper, the linguistic fuzzy rough set is presented to objectively model non-inclusive hedges, such as more or less and roughly, with semantics....

The PECVD (Plasma Enhanced Chemical Vapor Deposition) process chamber is dynamic sealed by the Multi-layer Linkage Sealing Mechanism, which is installed in front of process boxes. The leak rate attach uniformity requirement of process gas and RF flow distribution. Meanwhile, The efficiency of aSi/uc...

The present work had as main objectives to detect and analyse detonation vibration patterns and evaluate which ignition angle should be used for each angular velocity on the used engine.

Finite element model is presented by using software ABAQUS and used to carry out heat transfer analysis for tubular joints, and its reliability has been verified through comparison with reported experimental tests. Using transient and steady heat transfer theory, the critical temperatures of tubular...

Sludge bioflocculant was prepared from excess biological sludge by extraction method with dilute hydrochloric acid. A series of experiments were performed to investigate the flocculation efficiency of sludge bioflocculant towards starch and oily wastewater. The results indicated that the sludge bioflocculant...

The integrated sailing performance is important to the ship design and manufacture. However, it is very hard to be evaluated objectively and reasonably. In this paper the evaluation system of integrated sailing performance of ship’s was built which included seakeeping performance, wave loads, speed and...

This study have explored a method to obtain the airflow characteristics and the particle trajectories using CFD techniques and SST k- around a UAV. Numerical simulations of gas-phase turbulence physics at the flight speed of 20 and 40m/s and the altitude of 600 m have been carried out. DPM model simulated...

Based on questionnaire surveys and interviews in 6 typical security housing communities in Guangzhou, this paper analyzes residents’ satisfaction evaluation on property management and their choice willingness of management mode in different security housing communities. On this basis, uses logistic regression...

In this study, seaweed kelp as the raw material, the use of ultrasound-assisted method of extraction process kelp total polyphenols were discussed. Research on the single factor affecting the total polyphenol extraction: ultrasonic time, ultrasonic power, ultrasonic temperature, ethanol concentration....

Two-dimensional code technology has been applied to all aspects of production and life, such as auto parts production line tracking, product traceability, medical emergencies, e-commerce, media and tourism. However, these two-dimensional code application generally concentrated in record numbers, letters...

Clear the connotation and concept of equipment SoS and core support capabilities. Core support capabilities for the evaluation from the evaluation parameters and evaluation methods two aspects, analyzed characteristic and research progress on the core security capabilities systematically and summarized...

In recent years, the most commonly used method for the tap water disinfection is chlorination. However, a lot of disinfection byproducts (DBPs) with the nature of carcinogenicity, teratogenicity, mutagenicity can be produced as by-products in the process of chlorination. Therefore, DBPs would do great...

The STL (Standard Transform Language) file format has been the industry standard for Additive Manufacturing (AM) communities for last two decades. It falls short with the rapid development of AM related hardware and materials technologies. Kinds of alternatives to STL have been proposed. However, Massive...

By annealing PbTiO3 (PT) nanoparticles together with surfactants in NaCl flux, single-crystal PT nanorods were prepared with diameters of 60-80nm and lengths of several micrometers. The PT nanorods are in tetragonal phase and grow along the (100) direction. A first-order phase transition from tetragonal...

In order to realize the radar electromagnetic environment simulation, improve radar system combat effectiveness. A simulation system based on reverberation chamber concentrating on radar electromagnetic environment was proposed. The system was made by three processing center. According to the measured...

With the capture of Indonesian traditional fishermen by Malaysia without any clarity of violations as they operated in the grey area, Indonesia needs to act adequately and conduct legal protection. This is based on international agreement of UNCLOS 1982, which has been ratified by both Indonesia and...

The synthesis rate of 2- picolinic formic acid catalyzed by 2-methyl pyridine was studied to investigate the activity of mesoporous catalyst. The purpose is to prove that the mesoporous catalyst we used is a high performance heterogeneous catalyst. It was found that the amount of catalyst, reaction time,...

The increase of annual soybean import in Indonesia is attributed to the increase of national consumption and low production of soybean. This is mainly due to the decrease in soil fertility as a result of excessive use of synthetic fertilizer leading to the low soybean productivity and production. One...

To study the impacts of clean energy industry development on economic growth, we have established an econometric model based on the Cobb-Douglas production function. The methods mainly include the cointegration test, vector auto regression model (VAR), vector error correction model (VECM), Granger causality...

The challenge of education in Indonesia today is to guide students into a literate generation, a generation that is sensitive and concerned about the environment and issues that are happening. To be a human who has good information literacy, all we needs to be done is reading habits. Permendikbud No...

In this work, the zeolite A/activated carbon (A/AC) composite was synthesized from elutrilithe and pitch, and the removal of Cr3+ from aqueous solutions has been evaluated. The effects of batch experiment conditions, such as solution pH, contact time and initial concentration, on Cr3+ adsorption performances...

"Internet +" is the current stage of the main form of Internet economic development, the field of education also had a profound impact. The goal of computer education in higher vocational education is to establish a new theoretical teaching system and practical teaching system, as well as a system of...

To find an alternative method to replace the reverberation chamber method and the standing wave tube method in evaluating noise reduction effect, the damping characteristics of several low-noise asphalt pavements were studied by uniaxial unconfined dynamic repeated loading test. The correlation between...

In the modern society, the economic development of our country is moving rapidly and the material living standards of the people are constantly increasing. As a result, the power resources occupy an increasingly important position in people's daily life. However, because of this, people's daily life...

The objective of this study was to recover the iron from the iron ore tailing and convert it into a value-added products like -Fe2O3 nanoparticles with photocatalytic properties. Iron was extracted from the iron ore tailing by using acid leaching method and the leaching parameters were discussed. When...

This paper aims to identify factors influencing the walking speed of evacuees by conducting an evacuation drill in Padang, West Sumatera, Indonesia. A number of 18 volunteers and 6 observers, were gathered in an evacuation experiment on 3 routes with 5 segments each. The chosen routes are almost equal...

This article tells readers about the effectiveness of using online game on students’ English vocabulary enrichment. This is a quasi-experimental research which gives different treatment to experimental class and control class. Online game was used in the experimental class and conventional teaching media...

Considering sustainability in all stages of construction engineering is a need to protect environment, preserve natural resources and the earth for our own and future generations. An effective way to mitigate environmental impacts of the construction industry is the use of sustainable materials in construction....

In this research, an experimental investigation was carried out in the existence of gasoline on the Carbon Dioxide hydrate. This was done to replicate or Understanding the development of gas hydrates in multi-phase transmission pipelines. The experiments are conducted in a Rocking cell Gas hydrate reactor,...

The need for electrical energy has become a daily necessity for the entire community. In reality in the field, there are constraints that may occur in electric power distribution. One of the obstacles in the distribution of electricity is power losses. Power losses in the distribution of electricity...

The study site is located in the Sibaganding area of North Sumatra, which has complex geological conditions that form the background for this research. Sumatra is an island topographically oriented from northwest to southeast. The island is in the southwestern part of the Sunda Shelf, south of the Eurasian...

The extended service life of external insulation thin plastering systems is a common source of concerns in China. Although prefabricated concrete sandwich insulation walls are a superior option, they still have drawbacks, including high cost, inefficient production, and inefficient construction and installation....

The earthquake that occurred on April 10, 2021, with a magnitude of 6, was felt in several areas on the island of Java and Ampelgading and Tirtoyudo sub-districts are the most affected areas. Due to the impact caused by the earthquake, a method is needed to be able to reduce the destructive effects of...

The electrical properties of extruded bulk nanostructured samples of the Bi2Te2.7Se0.3 solid solution were studied in the temperature range of 77 ÷ 300 K and magnetic field strength up to74 x 104 A/m that did not undergo annealing after extrusion, and the same samples that underwent optimal annealing....