Search all articles

Large diameter longitudinal welded pipe is the main form of energy transport, and has a wide application in the transportation field of oil and gas. In this paper, crimping forming experiment for large diameter longitudinal welded pipe was introduced, and the relationships between forming stroke, crimping...

The separation and detection modules of the chromatographic system for the transformer gas-in-oil on-line monitoring is improved. The former single-column separation detection module is improved to double-column separation detection module, and compared with single-column detection module. The results...

Based on the recent stock price fluctuations of Coca-Cola and Pepsi, this paper analyzes the factors that affect the stock price fluctuations of Coca-Cola and Pepsi. The paper’s research method is to come to a conclusion through data review and analysis. The research object is the stock prices of Pepsi...

Systematic research on the performance of former designed plasma reactor was carried out in this paper. Numerical simulation method was performed, the distribution of electromagnetic field in microwave cavity by Finite Element Method (FEM). Microwave mode in waveguide, coaxial transformation part and...

Nowadays, fandom and fan culture have step into the eyes of the public gradually. Many people are curious about how this subculture carries weight to society. In this article, we mainly focus on discussing two problems. The first is how the development of social media and technology influences fandom....

7-(Benzyloxy)-4-chloro-6-methoxyquinazoline(1) was synthesized from methyl 4-hydroxy-3-methoxybenzoate(2) through five steps including substitution,nitration,reduction,cyclization and chlorination.Its structure was confirmed by 1 H NMR and MS spectrum.The total yield of the five steps was 29.2%.

The main purpose of this paper is to discuss whether Google has a monopoly in the search engine industry and whether it will maintain a monopoly in the future. Firstly, using the five-force model to analyse the industry where Google is located explain Google’s position in the industry. Then through the...

In term of sonic fatigue, initiation tests are commonly stopped at 108 cycles assuming that a fatigue limit exists, whereas feedback experience from in service aircraft has shown that structural elements can fail even after 1011 cycles. Thus, it is important to explore the gigacycle fatigue domain and...

Discretization of the basic-shape areas is described in the paper. Using Multi-axial spring model (called MS model) or fiber model for structural member idealization, the critical sections of the member are discretized in to a number of small elements (represented by springs or fibers) according to the...

The high pressure turbine blade of CFM56-7B engine is risky to crack, it’s failure modes include transition zone crack, shank rupture, min-neck damage, edge of contact and split-shelf clog, which could be modeled and simulated by finite element method. The root cause of crack is found by aforementioned...

In this paper, we solve the problem of the orbit design and control strategy of the soft landing of Chang’e 3,Use the Hermite interpolation method and the Parabolic interpolation method to analyze each stage of the process.By using the interpolation method in numerical analysis, which based on the theory...

2021 is called the first year of the “metaverse”, and the “metaverse” has quickly become a hot topic of discussion and has attracted the attention of the academic community. Social is one of the main innovation channels of the metaverse. However, what kind of future, what kind of challenges, and what...

The paper presented the design and implementation of the multifunctional smart power socket based on Cortex-M3 kernel STM32F103 MCU, using Zigbee technology for network communication and FreeRTOS as task scheduling management. The hardware design and software framework of smart power socket are described....

The development of technology has not only brought changes to our lifestyle but also affected our way of thinking. When it comes to education, technology has brought great opportunities to change the way of teaching and learning. Utilizing technology when teaching increases students’ motivation, engagement,...

By the intermittent hypoxic training of 72 male SD rats, we observed the changes of SDH activity in skeletal muscle in a quiet state, immediately after exercise and three hours later. We found that in these three states , SDH in rat skeletal muscle were significantly changed, and showed a downward trend...

As one of the main research directions of machine learning and CNN (Convolutional neural network), Autonomous vision and decision-making have many kinds of applications in various fields, especially in Driverless cars and decision-making on highways. In recent years, Tesla, HUAWEI, Google, and Microsoft,...

In this paper, a modified natural boundary element method (MNBEM) by using a modified DtN operator to improve the natural boundary element method (NBEM) is proposed for Neumann BVPs of the Helmholtz equation on unbounded domains. We prove the existence and the uniqueness of the solution of its variational...

Engineering site selection is the starting point and basis point for construction engineering to play its function. The quality of site selection decision is of great significance to the construction of engineering projects and the operation of follow-up facilities. This paper after analysing the four...

Cohesion and coherence are essential elements that have a role in forming structural coherence and coherence of the meaning of discourse texts. The formation of a coherent structure and semantic relationship cannot be separated from using the correct elements of cohesion and coherence, which are marked...

To solve the problem of adjacent order overlap for variable speed bearings, a novel method with the fixed-point independent component analysis (ICA) and peak detection is proposed. Firstly, the mixed vibration signal is whitened by through of the singular value decomposition. Then it introduces fixed-point...

In the trend of the mobile warfare, the researching moving base alignment method of vehicle mounted missile is very valuable.A new stable targeting method based on the transfer alignment of speed and attitude matching is proposed to solve the problem of a longer time alignment and a greater impact by...

As the main supporting equipment of the fully mechanized coal system, hydraulic bracket bears complex alternating load. The fatigue failure of welded structure as the main part of hydraulic bracket often occurs. In this paper, based on the welded structure of hydraulic bracket, the design methods and...

In the mathematical field of numerical analysis, interpolation is a method of constructing new data points within the range of a discrete set of known data points. Based on analysis of basic polynomial interpolation, the equidistant polynomial interpolation problem is studied. Simple divided difference...

Ship damage rates analysis is a important in shipbuilding. Poisson regression is a regression model for analyzing the dependent variable of count data. Ship damage rates forecast model based on Poisson regression is proposed. Using SPSS Clementine data mining tool, the ship data is analysis by Poisson...

A novel video object segmentation method combines change detection and edge detection is proposed here. The process of the algorithm can be divided into three parts: motion detection, spatial segmentation and temporal-spatial filter, which integrates the spatial and temporal information of the video...

With the development of Internet, Network public opinion has been serving an import role in reflection of social public opinion. As there are a large number of websites and forums on the Internet, we need a powerful crawler system which can meet the demands of opinion mining. However, common crawler...

This study examined the experiences of 60 primary students in Seremban who were engaging in online English learning as a result of the pandemic. The study explored potential differences in cognitive perceptions amongst students of different genders in online English lessons. The consequences suggested...

This article is an overview of obsessive-compulsive disorder (OCD). This review aims to discuss OCD through present and past research. The methods of this review will involve the reviewing of pertinent and credible literature based on the database of Google Scholar and APA PsycINFO. In the results and...

the situation is grim for domestic civil electrical fire and arc fault is the main cause of electrical fires. Low-voltage arc fault protection technology in China is still in infancy, and has not yet established a complete low-voltage arc fault database and the arc fault protection system is not perfect...

Since direct fault arc current is lower than the normal current value, it cannot be discovered by over-current protection; On the other hand, the arc is so dangerous. Therefore, it's imperative to research on direct current (DC) arc. In this paper, with a large number of current data through experiments...

This paper explores China's current safety situation in combination with the innovative and rational perspective to find potential improvements and or methods to solve specific aspects of the safety issues. The process is supported by extensive research and analysis of particular safety issues that...

The purpose of this study was to present and describe multiple efforts to foster the value of honesty in elementary school students. This study was a literature review. The authors used data collection documentation through Google Schoolar. Data were analysed by using the interactive approach, which...

With the development of society, science and technology in agriculture has gained more and more attention. The paper aims at sunlight greenhouse to design an automatic circulating temperature control system based on SCM--STC15F2K32S2. The system collects the greenhouse temperature passing to the SCM...

The Wading across Stream Algorithm (WSA) act a solution as a start point, then search several solutions randomly near the start point, and find the best solution of these solutions. This best solution is to take as next start point, and then search several solutions randomly near this start point, and...

A single-buoy wave energy converter (WEC) consisting of double hydraulic cylinders is designed to promote the conversion power of traditional oscillating buoy WEC by absorbing the energy of pitching motion. On the condition of linear, regular waves, the nonlinear coupled equations of the pitching-heaving...

Test of the rheology behavior for modified skim rubber (MSR) were carried out with rubber processing analyzer (RPA), and mooney viscosity were carried out with Mooney Viscometer. The results showed that mooney viscosity of MSR is lower than skim rubber, and it is higher than SCR-5 (Chinese Standard Rubber-5)....

The paper explores the influence of the feminist appeal of female gamers and the male gaze of male gamers in China on the market strategies in the game industry worldwide. The research is conducted through qualitative interviews and textual analysis. The research found that the female gamer group in...

In the network planning and optimization of mobile communication, cellular signal strength estimate results not only determine the rationality of the planning results, but also affect the quality of the network optimization, so designing accurate signal strength estimation methods is the key problem...

The article focuses on the self-drying curing characteristics of energy-saving and environmental friendly water-based self-drying / fast-drying foundry coating. Through check experiment, the differences of strength, humidity resistance and influence on the strength of resin sand when respectively using...

The purpose of this study is to estimate psychological changes, especially the prevalence of anxiety and depression symptoms among university students during the pandemic. In addition, we also evaluate the potential lifestyle-related factors that make students more likely to experience these impacts....

Anxiety has become the most characteristic feature of this era. We receive all kinds of information every day, but the unknown makes people afraid and omniscience makes people anxious. Based on Mead’s subject-object theory, this paper attempts to analyze in-depth the operating principle of the Internet...

This study was conducted with the aim of determining the relation- ship between the issuance of green bonds and the increase in the value of com- pany shares in the Indonesian capital market. Using a systematic literature re- view approach, this study collects and compiles various literatures that discuss...

The personal computer industry (PC industry) is a global industry that sells PC products to consumers. Since World War II, according to people's needs, the personal computer industry has developed in different stages. With the intensification of market innovation and competition, data analytics...

The COVID-19 pandemic has currently taken over the public’s attention. Due to the pandemic, the situation had become uncontrollable which caused people to react with an act of self-protection. This resulted in the escalating level of panic buying by many people from around the globe. Drawing on the Protection...

The successful issuance of JingDong IOUS has made a great innovation for Chinese internet finances. Therefore, this paper will study the risks of securitisation of Chinese internet finance assets based on Jingdong IOUS as a case study. The analysis concludes that there are seven main risks (market risk,...

In modern society, the odd-job economy has become an increasingly common phenomenon. In the context of the odd-job economy, workers find themselves in a precarious position, becoming freelancers, casual workers and contractors, even many full-time and professional jobs are undergoing this precarious...

The recycled aggregates were modified by sodium silicate, cement grout, cement mixed with superfine fly ash grout and polymer emulsion. The influence of the modified recycled aggregates to the mechanical properties of the concrete was studied. The results indicated that the recycled aggregates can reduce...

As the capital city of Zhejiang Province, Hangzhou is famous as a cultural metropolis in China with a lengthy history. Since the broad market of short videos has created new opportunities for city image communication, the emerging way of “Learn about a city on TikTok” has highlighted the cultural significance...

With the development of multimedia technology and network communication technology, distance computer management as a kind of new management meansconstantly developing based on internet, attracts more and more attention. Computer distance management is a kind of activities refers to the use of multimedia...

In the paper, by studying the ground water heat pump calculation model, the computing platform for heat pump system was established. Through a calculation case, the fluid temperature of ground water heat pump well side and user side, heat pump power consumption and other data were analyzed by entering...