Search all articles

The aim is to evaluate the impact of the flip-up classroom on the initiative and academic achievement of the vocational nursing students. The method of survey is convenient sampling method. A total of 137 high-level nursing students from 4 classes in a higher vocational college were randomly divided...

Data Flow Analysis is a difficult issue in the domain of fault localization, and many software faults are related to the information of data flow. The dependency between the variants and the define-use chain are discussed in this paper, and trace the impact to the variants in the process of operation....

In this paper, the internal flow field in an optical module of DUV laser was analyzed by ANSYS Fluent based on the finite volume method. The way of purging nitrogen was optimized according to the results of the analysis. After the optimization, a better nitrogen purge method was obtained, and a flow...

With the further advancement of economic globalization, there have been increasingly constant contacts between nations in the field of business, travel, culture, politics, etc. As a temporary home of foreign travelers in China, hotels and the bilingual services provided by them are increasingly important....

With the increasing demand for large-tonnage cranes in nuclear power and other industries, the research for cranes superlift is increasingly urgent. Taking 3500t crawler crane for instance, a new kind of hydraulic drive linkage system superlift mechanism is designed and a new design method for size parameters...

Commercial cutting tools of sintered high speed steel and carbide were used to heavy milling 6N01-T5 aluminum thin-walled hollow W-shape structures under four kinds of cooling conditions. The results showed that the cutting forces increased dramatically when cutting the weld seam or the intersectant...

For the problem of aircraft attitude estimation system, Unscented Kalman Filter (UKF) algorithm is easy to be disturbed. Therefore, an improved adaptive UKF algorithm which can overcome disturbance well by introducing adaptive factors to adjust the state gain matrix is proposed in this paper. The simulation...

According to the distribution characteristics of workflow time node, this paper studies the time node representation of a structured workflow and describes in detail the definition of workflow time node in Product Data Management, then puts forward a tree design model. From the time property of different...

The crankshaft is the important parts, engine crankshaft in multi-axis linkage machining crankshaft connecting rod journal fillet, due to the current solution is expensive, time consuming is too long, this paper proposes an improved scheme, make better able to take advantage of the present condition...

Faced with the challenge that resource depletion and environment deterioration, an important energy-saving measure by enhancing electric motor efficiency has been adopted around the world. With the development of measurement uncertainty of electric motor, for conventional motor efficiency evaluation,...

The load of wire in helicopter live-line work is analysed, and the calculation method for cable lifting of helicopter is proposed based on catenary theory of suspension cable. The nonlinear equation set is established to calculate the lifting force of the helicopter. The tangent stiffness matrix of the...

he Oxy-fuel combustion of Yunfu bituminous (YFB) chars was studied by isothermal thermogravimetric experiments at 1273K-1573K. The surface area of coal chars prepared at different stages of Oxy-fuel combustion was determined by BET methods. The pyrolysis temperature leads to a slight increase in the...

A nondestructive and accurate measurement method and related apparatus based on the split-cylinder resonator techniques is descried in this paper. The dielectric constants and loss tangents of the flat substrate materials are suitable to be characterized and then calculated by software programmed according...

The power industry is a major contributor to CO2 emissions in China, and hence its low-carbon development plays an important role in the nation’s initiatives to build a low-carbon economy and reach the goal of emissions reduction. Based on the analysis of existing carbon capture technologies in the power...

This paper investigates the position regulation problem of permanent magnet synchronous motor (PMSM) servo system based on adaptive fuzzy sliding mode control (AFSMC) method. Adaptive fuzzy sliding mode control is designed by using sliding surface as input of fuzzy controller, and adaptive fuzzy controller...

Using neural network BP algorithm and the neural network toolbox of MATLAB, this paper presents a new the evaluation model of equipment maintenance quality and uses an example to validate the evaluation model of equipment maintenance quality. At last it is proved that the effect of the model is perfect.

Explosive spalling behavior of reactive powder concrete (RPC) exposed to high temperature up to 800 ºC and the influence of steel fiber and polypropylene (PP) fiber on it were investigated in this experiment. Results show that RPC specimens encountered severe explosive spalling. However, adding PP fiber...

In this paper, we will illustrate the mechanism of metastability issues in ASICs designs that are driven by multiple asynchronous clocks. In order to solve this problem, effective synchronization method is described first. Using the proposed design techniques and optimization methods, metastability could...

Movable water saturation can accurately evaluate the formation of gas and water layer. It is an important parameter to guide the development of tight gas reservoirs. Engineering often used single factor of porosity to estimate saturation of the movable water. And in the formation of strong heterogeneity...

The inner plate can be used to stiffen square tubular T-joint in order to improve the performance of square tubular T-joint and the radial stiffness of square tube. In this paper, tow methods of experiment and numerical simulation have been used to study the strengthening effect. Three scales of welded...

With the deepening of the concept of environmental protection, the problem of environmental protection is becoming more and more prominent. In the operation of the waterway dredging project, the premise is protecting the environment. Avoid the adverse effects of the various channel dredging technology...

The paper proposes a novel seismic blind deconvolution approach based on the Spearman’s rho in the case of band-limited seismic data with a low dominant frequency and short data records. The spearman’s rho is a measure of the dependence between two continuous random variables without the influence of...

The complexity of software upgraded is the inevitable result of the deepening of social information, and then to put forward higher requirements of software testing. Because of technology, co-ordination, geopolitical, or other non-technical factors these factors the tested software and related hardware...

As an important international language, English plays an important role in cross-cultural communication. Proficient use of English in communication and exchange is the ultimate learning goal of every English learner. With the development of globalization, the learning task of English course is not just...

The article at the beginning analyses the significance of establishing collaborative management information system in copper companies. Then, the hierarchical structure and the mutual synergic relationship of the system are put forward. What’s more, the characteristics of the system are elaborated. In...

Information equipment has become the main body of our PLA, and software has become the soul and hub of weaponry, and software maintenance support has become one of the key elements that constrain the formation of equipment operations and support capabilities. Through the analysis of the content, steps...

Socialism with Chinese characteristics has entered a new era. This is a new era in which young people walk with their dreams. Arming the minds of young people with the spirit of the 19th CPC National Congress is related to the long-term development of socialism with Chinese characteristics, the overall...

Young teachers in universities are the backbone to promote the development of China’s education. It is of great significance to explore the formation mechanism of their work well-being. This paper tries to build the model of its internal formation mechanism from the psychological level, and explores...

The instability of natural anthocyanins was a big obstacle for its usage. In order to improve the stability of anthocyanins, molecular modification was used. In this paper, the molecular modification of blueberry anthocyanins was acylated by using aliphatic carbonyl acids (acetic acid, oxalic acid, heptane...

In this paper, we propose a framework for building a human-machine language dictionary. Given a concept/word, an application can extract the definition of the concept from the dictionary, and consequently “understand” its meaning. In the dictionary, a concept is defined through its relations with other...

Aiming at the problem of tilt, deformation, vibration and other issues when capturing image by mobile device, the image has been processed for scaling, rotation, mirror, shear based on mobile device, and the actual simulation experiment based on iOS platform has been done, and achieve better results....

Independent innovation has become the core of development of national science and technology strategy after the 19th National Congress, and how to improve the ability of independent innovation of science and technology has become a major concern of the academic circle in China. The development of independent...

Mainstream IR theories are largely western-focused and little attention has been paid to theories from other parts of the world. With the development of IR discipline in China, many scholars tend to form a ‘Chinese School’. However, the rise of China is often seen as a threat by the West, yet the Chinese...

Titanium dioxide(TiO2) has a good ultraviolet masking effect, antibacterial and photocatalytic function, so it is a good material for the preparation of organic inorganic composite materials, which can be widely used in industrial, food, environmental protection and other fields. In this paper, TiO2...

The performance of the tire has an important effect on vehicle running safety, and in the actual use of the tire will inevitably encounter a variety of complex and harsh conditions, it is easy to make the tire scratches, so to study the effect of scratches on the performance of the tire is very important....

A procedure for solid-phase microextraction fiber preparation was introduced, which combined a quartz fiber substrate with a blend of SiO2 sol–gel and PVA, as a way of increasing both the adhesive ability and the extracting capability of fibers. Double cross-linked network of organic and inorganic layer...

With the constant innovation of active decoy technology, it threatens the effectiveness of anti-radiation missile strike capability. This paper introduces the characteristics of ARM passive radar seeker, analyzes the current situation of active decoy technology, and based on this, advances the method...

You 11.00R20 tire shoulder suffered hyperthermia and periodic alternating stress will easily result in rubber aging and cracking, then the flaw generate in it. In this paper, based on ANSYS Workbench, a local sub-model of the 11.20R20 tire shoulder is established. And the stress, deformation and displacement...

At present, in colleges and universities have the adaptability of freshmen in education. On the one hand, is a new entrance in order to help students improve the ability to adapt to the environment, quickly into the new learning at the university of life. On the other hand, it is an important means of...

Aiming at the demand of automobile specialty construction in Chongqing Creation Vocational College, the vocational orientation, cultivation orientation and talents demand of automobile specialty in higher vocational education are analyzed; The industrial environment of automobile specialty construction...

This paper analyzes the methods of Object-Mediated User Knowledge Elicitation (OMUKE) and Semiotic Approach to Product Architecture Design (SAPAD). OMUKE clearly shows the relationship from behavior to object and from the relationship between task (behavior) and the use, user knowledge is analyzed. SAPAD...

The western intellectual property system has existed for several centuries and it has become a perfect system. With the establishment of new China, Chinese intellectual property system has gradually developed too. It is currently in the new period of building the intellectual property system with Chinese...

Customer engagement is a hot spot in marketing, and it has also received attention in virtual communities. This research is based on 241 articles in the web of science database from 2010 to 2019 about customer engagement in virtual communities. It sorts out the research status in this field, summarizes...

The big data analysis of oil wells uses the historical production data of the oilfield to find out the internal relationship between the data, to guide on-site production and to realize energy consumption reduction. Due to the huge of wells’ historical data the big data analysis methods such as descriptive...

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

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

Through the statistics on brand category of tea, tea enterprises and cooperatives, tea output value, per capita income of tea farmers in tea industry of Mengla County, and qualitative and quantitative analysis by use of Excel and CiteSpace software, this paper proposed the problems existing in the development...

With the deepening of the reform of China's financial system, private offering funds have been becoming an important part of China's financial system, but there is little research on the index of private offering funds. This paper constructs an index, which covers 86.87% of the private funds for futures...

In order to understand the application effect of social public opinion monitoring system, the application research of a data mining technology in social public opinion monitoring system is put forward. Firstly, this paper analyzes the challenges and new features of data mining technology under the data...

For modeling the organizational form of business activities in complex production processes, a workflow model based on binary tree for process management in PDM is presented in this paper. Take use of binary tree structure, each business activity is organized by the relationship of parent-child and brotherhood...