Advances in Engineering Research

The polymer composites based on carbon nanotubes are of particular interests because of their excellent performance. In this work, carbon nanotubes (CNTs) were modified by concentrated acid solution which resulted in CNTs grafted with carboxylic acid (–COOH) and hydroxyl (–OH) groups (i.e. a-CNTs). The...

In this paper, the parameterized dynamical model of the diesel engine intake and exhaust system using a data-based method, namely a Gain-Scheduled model is proposed and designed based on the data from a virtual engine test bench under normal load conditions. In the first step, the Multiple Input Multiple...

The welded unreinforced flange-welded web (WUF-W) moment connection is one of seven prequalified connections for the special moment frames (SMF) specified in AISC 358-10. In this study, in order to predict cyclic behavior of WUF-W connections using nonlinear FEA, finite element studies for selection...

The library implements regional alliance is a great progress of service mode. This paper discusses the current operating status of the domestic and foreign library regional alliance, forecasts the future development trend of the regional library alliance service mode. Focusing on analyzing the current...

Analyze the formation mechanism of low carbon benefits of the low carbon power, and combine the economic and low carbon characteristics of a low carbon power by using the low carbon economic factors, redefine low carbon benefits of the power planning and form a comprehensive evaluation model of low carbon...

To understand the microbial community characteristics and denitrification status in coastal water ecosystem of Bohai Bay, China, the bacterioplankton from six representative stations were collected in September 2016, and the bacterial community and abundance of nir-encoding denitrifying bacteria were...

The article considers the trend of development of the aircraft building industry in the direction of industrial robotics application. Questions on achieving high assembly accuracy, application of robot manipulators in assembly processes are considered. Intermediate results of calculating the accuracy...

A Stirling cycle solar wind combined power generation system was designed, and a theoretical analysis model of the power and efficiency for each subsystem of the system was theoretically constructed. Firstly, the Stirling machine and the solar cooker are used to focus on the solar energy. The vertical...

Polypropylene has a great electrical property and may be used as primary insulating material in electrical power cable. In cable accessory, the field distribution is often distorted since the very complicated physical structure, which makes interface discharge between PP and cable joint insulation easy...

According to the problem of the optimization of overall performance of idle spectrum assignment for cognitive radio, it proposed a spectrum assignment method for cognitive radio based on binary weed algorithm. Considering maximizing total network efficiency and fair effectiveness as a criterion, the...

Improving the housing policy of the socio-economic development of the urban district of Volgograd city requires the prompt introduction of significant changes that will help correct a long-term negative trend to reduce housing construction. Changes should stimulate the construction of individual low-rise...

The phenomenon of the big text signs in almost all cities in Indonesia to mark the name of a place that is already known by the surrounding community will ultimately affect the collective knowledge of citizens. It is just that the presence of big writing is no longer unique when all the cities are busy...

In this study has the objective to develop sub instruments digital literacy of subjects of electronics circuit in vocational school students. The resulting sub instrument is used to measure the competency of students with the three domains such as affective, cognitive, and psychomotor. This study uses...

As the new type of green solvents, Deep eutectic solvents (DESs) might be the key to a better future. This mini review presents a brief discussion on the applications of DESs especially in oil and gas sector published in the past half a decade. Several reviews made on applications of DESs in different...

A fisherman insurance program is one of the government’s policies to protect fisherman in their work. This study aims to explain the attitude of fisherman to fisherman insurance programs. The sampling technique used is non-probability sampling using the method of judgment sampling approach, which is...

The government has established a responsive and proactive governance system that is oriented towards work professionals and innovation management in fostering the employee’s innovation spirit through the management role, namely the paternalistic leadership style, to create a credible and accountable...

One of the information systems expected to continue attracting individuals to use it in their daily activities is the e-wallet; from the introduction of the e-wallet, the process of adopting it, the decision to continue using the e-wallet and to making the use of e-wallet an unconscious habit. This study...

Indonesia’s location in a high seismic hazard zone underscores the need for earthquake-resistant structural systems. This study evaluates the seismic performance of a six-story apartment building by comparing reinforced concrete and steel structural systems. Nonlinear static pushover analysis was conducted...

Biomass is an environmentally friendly alternative energy due to its sulphur-free, carbon-neutral, and the abundant availability. Coconut Shell is a type of The calorific value of biomass waste, which is suitable for use as a raw material in the gasification process, is 20890 kcal/kg. Gasification is...

Student safety remains a paramount concern for educational institutions, particularly during transit. This paper introduces Secure School, a comprehensive student safety management system that deploys Radio Frequency Identification (RFID) technology to enhance monitoring, tracking, and predictive analysis...

SDGs are the blueprint to achieve a better and more sustainable future for all. SDGs target #11.7 means that by 2030, cities should provide universal access to safe, inclusive, and accessible green and public spaces for women and children, older persons, and persons with disabilities. Besides, all public...

In recent years, the research community around the globe has contributed significantly to improve the brain-computer interface based assistive technologies. Electroencephalographic brain-computer interface enables the person to communicate with the outside world by creating an advanced communication...

The Komatsu D155A-2 bulldozer is a sequence tractor designed for vaious earthmoving obligations, presenting components just like the blade, raise cylinder, cabin, gasoline tank, ripper, and more. it's far powered by an SA6D10E-2 engine and uses a crawler-type steering machine with a grasp for manipulate....

With the rapid development of China’s economy, the scale of transportation network construction continues to expand. In the construction of expressways, slope engineering formed by high filling and deep excavation has become an important research topic. This study focuses on the mechanical response mechanism...

We examined the projection of permafrost distribution in Mongolia using RCP2.6 and RCP8.5 scenarios. According to the high emission scenario, an annual average near-surface temperature rapidly increases in Mongolia with high confidence. A similar trend of temperature is obtained at the depth of 3 m....

Lightning protection design for 10kV composite distribution tower differs from transmission towers and the traditional iron tower due to the insulation of composite material and complexity of lightning protection design for 10kV distribution lines. Related research is still in blank. Key points of lightning...

Under the background of increasingly standardized logistics market and more intense market competition, there are more needs to establish logistics centers with sound logistics functions and improved information network. Choosing a reasonable location is particularly important to build the logistics...

In the context of the rapid development of Chinese economy and society, the commercial data has been greatly increased in the long run, so that the operation of the enterprise from the relevant data to find the corresponding decision support tools are getting more and more attention. The development...

Thematic structures have been extensively studied for the powerful textual functions they display. This paper explores the cognitive mechanisms underlying the coherent functions of thematic structures in literary text with the application of Event-domain Cognitive Model (ECM). It has been found that...

In this study, we use the technology of ultrafiltration to separate the natural active peptides from milk, and optimize the conditions of ultrafiltration. The density of the natural bioactive peptides could be assayed through Biuret method. The results showed that the optimized separation conditions...

In order to plug water channeling of fractured tight oil reservoir, a new type of copolymer as the main agent is used for deep profile control and oil displacement. This copolymer is synthesized with modified cellulose and acrylamide, which has relatively lower viscosity and can meet the requirements...

Financialsystem exhibits a high degree of interdependence. Different typesof interconnections exist among financial agents, such as loanguarantees and cross share-holding. Financial contagion coulddiffuse along the interconnections and lead to wide spreadof risk. Thus how to effectively maintain the...

This paper analyzed the overall patent situation of global piezoelectric inkjet printing head technology, the layout of relevant technological field and the main competitive regions and applicants from the developed background of the global piezoelectric inkjet printing head technology. Based on the...

The currently popular Building Information Modeling technology is substantively a dynamic integration system between digital graphics and related information of structure engineering, where information can be updated with change of graphics. The concept, construction method, description standard, basic...

Based on the topological theory and MATLAB program, electrotopological state indexes (En) were calculated for 114 polycyclic aromatic sulfur heterocycles. A six-element regression model of quantitative structure-retention relationship (QSRR) for retention index (RI) as a function of En was constructed...

It is an important how to provide effective cost, high performance image block query and image block analysis for the design of WEB image server. To solve the above problems, this paper proposes a novel method to design and implement WEB image server. Like most modern WEB image server, the server stores...

To ensure trouble-free operation and lifetime of lithium-ion storage batteries (LISB) for spacecrafts, it is advisable to use bypass devices (BD) with a power element of a thermal drive made of smart material with shape memory effect (SME). The authors presented experimental results of the effect of...

Transient Recovery Voltage (TRV) requirements for UHV and EHV circuit breakers were investigated with the simple radial and meshed network models by CIGRE WG A3.28 and it was confirmed that the CIGRE network models could provide the TRV behaviours effectively using the system and equipment parameters...

Along with the accelerated development of urbanization process, makes many airports originally located in the outskirts begin to be gradually surrounded by city. How to renovation and reuse of the old airport effectively and reasonably, and alleviate the contradiction between the airport and urban development,...

For a valve controlled cylinder speed system with separate control of actuator ports, combining static operation point theory and load sensitivity technology, a new pressure control method is proposed. An optimal pressure based on command speed and load force was the input of pressure controller. At...

In order to reduce the equipment failure frequency and maintenance cost, equipment failure must be effectively predicted. Consider that the actual failure interval of equipments is to contribute to maintenance planning and scheduling, it is used to statistical analysis the failure trend. According to...

Magnetic properties and magnetocaloric effects (MCE) of the tetragonal (ThCr2Si2-type) PrFe2Ge2 compound are investigated. The compound is determined to be antiferromagnet with the Néel temperature TN=14.5 K and undergoes a transition towards an incommensurate modulated structure at 7 K. A field-induced...

Since the pattern recognition technology has been put forward in 1960s, it has attracted many researchers' in-depth exploration and research because of its great development potential. Over the years, the pattern recognition has made great progress in the field of face recognition, fatigue detection,...

This paper deduces the relationship between the frequency response and loads for a structure within the frequency domain, and puts forward a new method for identifying the random loads spectrum. Firstly, the response power spectrum of structural control points is calculated based on the white noise loads...

In conventional power flow calculation, the lines resistances are always assumed to be invariable, which does not conform to the actual. Resistances of transmission lines are changed with changes of external environment and power distribution. In this paper, a model of power flow calculation considering...

The hub bolt of the main wheel of a large civil aircraft is an important bearing part in the take-off and landing process of the aircraft. The bolt will be detected by fluorescence or magnetic powder in each tire disassembly process. It is found in the application that even if some bolts pass the magnetic...

The article describes the solution to the problem of reducing the wear of rails and wheels by creating new lubricant compositions for the lubrication of rails based on polymers and other waste products, which allows one to simultaneously solve, to a certain extent, the environmental problem consisting...

Tor hidden service allows the hidden service provider to provide TCP service without revealing its location, protecting the anonymity of both client and server at the same time. The length of the hidden service circuit is one time longer than normal Tor circuit. Although tor hidden service ensures the...

With the further advance of ocean research and the national security needs, the mooring data buoy has been widely used as an important part of ocean engineering high-tech research. How to deploy them in a convenient and economic way is very important. In the past, the deployment is often accomplished...

Cholesterol is one of the causes of coronary heart disease. The research objective is Assessing dosege of Sambiloto extract in reducing blood cholesterol levels rats (Rattus norvegicus) hypercholesterolemia. The research method is experimental, using Completely Randomized Design (CRD) 3 replications,...

a X-band microwave monolithic low-noise amplifer is presented in this paper. This LNA has been realized by 0.15um GaAs process.it exhibits high performance: over 8GHz~12GHz, power gain is above 20dB; the ripple variation of power gain is less than ±0.7dB; The 1dB compression point is more than 10dBm;...

Due to the lag of the curriculum systems and the difficulties in parallel programming, there are few national universities to provide high performance computing (HPC) or parallel computing courses for undergraduate students. With the arrival of the era of research with big data, many universities have...

Through the classification of the profiled insert in die-casting mould, the technological analysis of the blind cavity insert is carried out. It provides a general process for the CAM technician to design the insert machining program. Combined with CimatronE software, the processing ideas clearly show....

For high precision detection of hydraulic proportional solenoid valve pressure, sealing properties and steady pressure characteristic performance indexes, independently design a solenoid valve performance testing platform, which has a high level of automation. Its core based on PLC controller and touch...

Spherical plain bearings have the characteristics of self-adjusting and self-lubrication, they are widely used in defense, engineering and other fields. However, the spherical plain bearings are easy to fail in the process of work, and reasonable design seems to be very important. In order to save cost...

The interest of the community, especially MRT users to walk at the beginning or end of the journey to the MRT station is relatively low. The purpose of this study was to recognize the effect of changed preference attributes that affect the likelihood and distance of someone who will choose to walk compared...

This study aimed to investigate the effect of different concentration of virgin coconut oil to antioxidant activity, physical characteristics, and organoleptic of dark chocolate, and knows the best addition of virgin coconut oil on dark chocolate making. This study used a Completely Randomized Design...

Special Region of Yogyakarta is a province that is quite densely populated due to many migrants and domestic and foreign tourists visiting and settling in the province. This will have an impact on increasing land needs and meeting needs that can have an impact on declining environmental quality, one...

Wood is a material used by man to meet his life needs, both as building materials and other tools. Conditions as a construction component require large size, one that can be by making lamina wood. This study is the influence of lamina on physical properties, mechanical properties, healthy classes using...

High Voltage Transmission Tower is an important for distributing electrical energy in a large network. It is one of essential infrastructure in the modern life and should be maintained in high performance. In the event of earthquake, however, this structure may be damaged. This paper aims to evaluate...

Deformation properties including displacement is a key factor for determining accurate behavior of transport infrastructures. In this paper, two noncontact methods named 2D and 3D optical measurement methods were developed and tested to measure deformation properties of structures under static and dynamic...

Due to the fully prefabricated nature of the project’s steel truss, high precision control is required during installation. The existing BIM technology cannot account for the production and assembly errors of prefabricated components. A refined BIM+3D laser scanning method is proposed for steel bridges...

Clay soil stabilization is one of the important efforts in the field of geotechnical engineering to improve soil characteristics, such as strength, bearing capacity, and resistance to damage. This study aims to compare the effectiveness of two clay soil stabilization methods: the lime stabilization and...

Colpomenia sinuosa plays an important role in marine ecosystem and biological resource utilization. The total length of mitochondrion genome was 39,055 bp in length and consists of a circular DNA molecule. The circular genome is composed of 66 genes, including 38 protein coding genes, 25 tRNA genes,...

This study delves into the limit intrusion of retaining piles in deep foundation pits of subway stations, analyzing the bearing capacity after the removal of over-limit retaining piles. Drawing upon a specific engineering case, it proposes a systematic solution to address the intrusion of retaining piles...

Z-source inverters (ZSI) have been widely used in photovoltaic grid-connected applications because of their high efficiency and low cost. However, due to the lack of electrical isolation, such inverters are prone to leakage current (LC), affecting the safety and stability of the system. This paper reviews...

Hydropower remained one of the most promising renewable energy sources, particularly for rural and off-grid communities. Pico-hydro systems, typically with a capacity of less than 5 kW, offer an attractive solution for areas with limited access to electricity, with cross-flow turbines being widely applied...

The energy mix in 2024 is targeted to be 23% of total energy availability. At this time, the combination of coal and biomass is a priority to achieve the target. This paper describes coal combustion results and sawdust from the slagging and fouling employing XRD analysis. To guarantee co-firing is a...

Tetracycline hydrochloride (TC) is a tetracycline antibiotic characterized by a complex structure, prolonged persistence, and widespread environmental contamination. To address this, BiVO4 and CeO2 composite photocatalysts (BVC) were synthesized via high-temperature hydrothermal method for the degradation...

As heavily polluting enterprises prescribed by the Ministry of environmental protection, pharmaceutical enterprises should disclose environmental accounting information timely and accurately. But in practice the frequent environmental accident questioned the quality of the environmental accounting information....

In order to promote the movement inside tunnel robot in the cable tunnel and obstacle capability, designed a swing arm type crawler chassis, applied to the robot. The chassis adopts the modular design, assembly simple replacement maintenance convenience, enhances the terrain adaptability. Swing arm type...

Seed germination and germinated seedlings growth in sewage sludge were analyzed using acute and subchronic phytotoxicity assays, in order to explore the changes in sludge phytotoxicity during the combination of high-rate anaerobic digestion and aerobic composting. Results showed that compared with the...

To summarize the main technical features of the international heavy hydraulic scrap baling press, the technical characteristics of Y81-1000 type heavy oil-hydraulic scrap baling press made in China were mainly introduced. At the same time, the new design and development of this technical equipment were...

We tested 8 plants and 3 medium and tested perlite base, thus achieving the results. The green coverage for media S6 (perlite to sandy loam is 8:2) is suitable for Alpinia speciosa the best growth 1040.5cm², followed is Duranta repens the growth 675cm², with Portulaca grandiflora as the third growth...

In high precision three coordinates measuring machine in the process of measurement, dynamic error analysis has been improved measuring machine precision and speed is an important subject. Three coordinate measuring machine structure in the movement of the dynamic deformation of the theoretical points....

Aiming at the peak shaving and poor power quality issues resulted from the intermittent power sources, battery energy storage system (BESS) is generally a key distributed generation unit in microgrid. Therefore this paper presents a sizing optimization method for battery energy storage system in the...

The investment for distribution network construction is an important part of power grid construction. The establishment of analysis model for the investment and operational efficiency of distribution network construction is able to ensure the economic operation and reliability of power system, and has...

The mechanical property and wave velocity of fine sandstone after different high temperature such as 25 400 600 800 and 1000 , be test studied by the servo-controlled testing machine RMT-150B and ultrasonic nondestructive testing instrument TUA2000A. The test results show that: (1) the sensitivity of...

The objective of this paper is to propose a framework to assess and monitor the level of sustainability at the automotive supply chain, followed by its validation with a case study considering several companies from United Kingdom (UK).

In order to get parameter properties of rock mass, a series of representative unloading tests are carried on hard granite moonstone for that it is indispensable to get mechanical parameters and strength parameters for numerical simulation. In the unloading tests, the stress path of decreasing confining...

The evaluation model of university laboratory safety based on BP neural network is presented. By reference of the domestic research for laboratory safety evaluation and combining with of laboratory characteristics of Jinlin University, the safety evaluation index system of university laboratory is selected....

Floating raft vibration isolator (FRVI) is widely used in ship system. This study investigated effects of FRVI parameters on the overall performance of vibration isolation. Mechanical model of FRVI was established. Using the theory of admittance transmission power flow was deduced. The influence of FRVI...

Systematic error of digital measurement system (DSM) mainly exists in the analog measurement channels. The cause of systematic errors is circuit status and parameters of OPA, DAC and reference circuit which drift with changes in temperature and time deviate from the standard values. In this paper, firstly...

For this investigation cement–sand mortar and cement–water pastes were made with partial substitutions, relative to the weight of cement, of organic fibres for the purpose of restoring hydraulic concrete structures, damaged by diseases derived strength design. Five different proportions of dewatered...

In order to optimize Enzymatic Extraction barley polysaccharides parameters, the use of orthogonal test to optimize their processes, affecting the cellulase barley polysaccharide extracted five factors, the maximum temperature hydrolysis, the solid-liquid ratio on minimum. The impact of the extraction...

This paper mainly introduced the machatronic design of the 70Mpa 1600 tonne Incremental Launching system. Firstly, the 6 Degrees of Freedom adaptive mechanical launching device and its hydaulic system were described. Then, in order to properly statisfy the requirments of the launching function during...

In this paper, we investigate the effect of modulation rate on the energy efficiency of a two-hop communication system with the assistance of a half-duplex decode-and-forward (DF) relay, considering the given bit error rate (BER) and using the M-QAM modulation. First, we formulate the optimum model of...

Nowadays, computer network is widely used in many areas of daily life. Since the affectation of vulnerabilities and viruses, there will be a variety of security issues in the application process of computer network. In order to provide effective protection for computer network security, computer network...

The hot water flow method, which has been gradually applied, is very useful for Checking the Water Circuit within the Winding of Turbo Generator. Simulation tests are first shown in this paper at the beginning and the factors concerned with the tests are studied such as flow and temperature difference....

In order to optimize the process configuration design scheme, the trade-off evaluation for process configuration scheme based on reusability and validity was proposed. By comparative analysis between the configuration process technology and traditional process and referring to the method of product configuration...

In this paper, we study the consensus problem on small-world network with time delay. In particular, we give the sufficient condition of the consensus problem reaching consensus base on a rigorous spectral analysis for the Laplacian matrix of small-world networks. Closed-form upper bound for the spectral...

With the development of OCR techniques, people start to use image processing methods to analyze and process the image-type documents (typically scanned images) for obtaining the information of characters and the layout. On the other hand, table, draw relatively less attention in OCR even it is an important...

Indonesia faces challenges in its sustainable fisheries management. Various policies have been issued as the effort to solve this problem. One of which is the prohibition on the use of fishing gear called Cantrang. However, the policy received rejection from various parties. This study aims to identify...

The defect characteristics of the Be-doped GaSb and no-doped GaSb film grown on GaAs and GaSb substrate respectively were analysed by the method of molecular beam epitaxy (MBE), positron annihilation Doppler broadening spectroscopy (PADBS), X-ray diffraction spectra (XRD) and atomic force microscopy...

Seed size before storage can affect the performance of the seed after storage. Seed size correlates to energy reserves, and therefore an evaluation of the relationship between seed size and seed quality is needed. This paper discusses variations in the seed sizes of sixteen UNPAD sweet corn lines to...

Under the conditions of economic changes and transformation of social processes, modern society, entered on the path of sustainable development, has a special purpose - the organization of such a way of life, in which the preservation and enhancement of natural diversity will become an objective need...

This study aims to describe the learning process and the students’ self-regulated learning through the implementation of the problem-based learning model. The obtained data were analyzed using quantitative descriptive approach. Results showed that: (1) The implementation of problem-based learning model...

The twenty-first century is the era of big data. The rapid development of internet technology and the concepts of data mining, cloud storage, cloud computing and others are constantly emerging. While we enjoy science and technology, we must also face ethical thinking and legal challenges. While we use...

Travelling Salesman Problem (TSP) is a typical combinatorial optimization problem. The main idea of the problem is that given a number of cities and the distances between each city and tries to get the shortest path that visits each city exactly once and back to the starting point. This report introduces...

Contains a brief description of research Abstract: Alternative medicine using herbs has been very popular in Indonesia in the last few decades. Takka plants contain secondary metabolite compounds that can be used as medicinal materials, it is necessary to administer drought stress. The purpose of this...