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Beam pumping unit is the most important ground equipment of the sucker rod pumping system. According to the geometric relations and motion relations of the pumping four-bar linkage, the polished rod motion law is obtained. Based on the torque balance, the dynamic equations of each part for the beam pumping...

As for the optimization of EMU second-grade maintenance plan, the author has made a model out of the target function which is the minimization of total mileage wasted within scheduled duration and managed to get solutions out of simulate anneal arithmetic. Finally, taking the Beijing-Tianjin inter-city...

Based on the current situation of Songshan Mountain movie and TV tourism, the paper analyzes how movie and TV works have a positive impact on Songshan Mountain tourism and mainly play a huge role in positively shaping the image for the tourism destination, effectively promoting the tourism destination,...

25 groups of GAC-20 modified asphalt mixture are designed by referencing the orthogonal design method, the high temperature rutting test are carried out , the related model of the fractal dimension and the high temperature performance evaluation index dynamic stability is established by using fractal...

The intelligent shopping cart is designed with embedded system, and has small area positioning and navigation, mobile payment, area storage and anti-theft functions. The Android system obtains the Wi-Fi signal strength and MAC address of AP, and sends the RSSI data to the server. The server obtains the...

Advertising is so familiar in the modern era that people can see it almost everywhere. Advertising is not only about commercial promotion of products, but also comprises the idea of texts with particular intention to elevate the image of an individual, group or organization. The medium of advertisement...

The One District One Industry program locally known as SDSI (Satu Daerah Satu Industri) initiated by the Malaysian government has begun to show the positive economic impact on rural entrepreneurs. In thriving for successful, the entrepreneurs faced a lot of obstacles and problems, particularly in finance...

A theoretical analysis is presented on the relation between cash flexibility and internal control as well as the adjustment effect of environmental uncertainty on the two's relation. Based on theoretical analysis, an empirical test is made with 450 non-financial listed companies on A shares mainboard...

With the gradual implementation of the national deleveraging policy and changes in the internal business environment of enterprises, debt default events occur frequently, and many enterprises are facing a serious financial crisis. This paper takes Evergrande, a leading real estate enterprise, as the...

This paper studies the impacts of cash holdings on excess credit using a balanced panel of 988 Chinese listed companies. Regression results show negative correlation between cash holdings and the possibility of occurrence of excess credit in Probit model. The lower the corporate cash holdings level,...

Wumeng mountainous area is one of the 14 centralized and contiguous poverty areas in China. It covers two Chinese key ecological functional areas, including the forest and biodiversity ecological function area in Sichuan and Yunnan and the karst rocky desertification controlling ecological function area...

In the circumstance of the age of knowledge economy and society of information, the update of knowledge have sped up its frequency, which make it of vital importance to train college students' abilities to self-study, innovate, and to cultivate their ideas of lifelong learning. Self-studying is an essential...

Supply chain finance (SCF), which has the key concept of the delivery of credit, is a new type of financial service that can enhance the financial efficiency of a supply chain. Using the transaction records from the core operations (CO) of the members, financers can provide a higher level of cash flow...

All-media digital textbook reconstructs traditional materials and online courses with the support of information technology in Internet plus era. It redefines the traditional teaching and learning, and also reforms the way of reading and the habit of learning. All-media digital textbook integrates three...

Implementing energy from the sun to power a digital farming concept in Palembang can significantly benefit agriculture. This study’s objective of digital farming is to develop solar-powered automatic agriculture. Agrivoltaic refers to the combination of agriculture and solar energy generation. This research...

Soil spray sowing protection techniques for rocky slopes always face challenges such as low germination and short survival periods, due to their poor water retention and high evaporation rate on rocky slope surfaces. Following points of view on ecological and environmental protection, low energy consumption,...

In this paper, we studied the problem of continuous reverse k nearest neighbors (RkNN) in directed road network, where a road segment can have a particular orientation. A RNN query returns a set of data objects that take query point as their nearest neighbor. Although, much research has been done for...

This paper proposed a novel calibration algorithm for sensor position errors of moving sensors by using calibration emitters. The algorithm presented is based on time difference of arrival (TDOA) measurements received by sensor network with sensor position error. Firstly, the linear relation between...

In this paper, By choosing four kinds of grinding aids better one-component, The grinding aid of cement grinding aids is determined by orthogonal optimization. By adding different inorganic reinforcing components, Developed a cement grinding aids. The result turns out, compared with blank sample, the...

The large number of Muslim population in Indonesia is directly proportional to the number of mosques it has. The large population of mosques scattered throughout Indonesia should be able to contribute in the prosperity of society if we return the function of the mosque as in the time of the Prophet....

Communication plays a central role in virtual team performance, but its research results have not always been in agreement with each other. Using a general IPO model, this paper proposed hypotheses from the perspective of Media Synchronism Theory, and conducted a meta-analysis to test the relationships...

This research was conducted in 2017 at four forest-dependent villages of Kalimantan, Indonesia, which were traditionally migrated outside village looking for a job. This study aims to determine the impact of migration on the livelihood and agricultural land of forest-dependent farmers. The result showed...

In 2020, COVID-19 broke out worldwide, which greatly impacted the global economic market. This paper, adopting qualitative analysis method, mainly studies the impact of the epidemic on basic agricultural products, cash crops and high value-added agricultural products, and puts forward some suggestions...

Most of the rural houses in Hainan Province are self-built by the residents, and due to the constraints of geography, economic conditions, and professional technology, many houses have problems such as poor construction quality, low strength of materials, and no anti-seismic precautions, which result...

Parametric deformation is the reference to measure the quality of the parameters. According to it, a three-dimensional mesh spherical parameterzation method is put forward based on local deformation energy for arbitrary and spherical homeomorphism of zero defect lattice close type grid model, and the...

This paper introduces a method that can detect human posture by using depth image. The method uses head model to locate the human position which includes edge extraction, template matching and human detection. Then we extract the HOG feature from the depth images to get the characteristic vector of the...

The active failure is important to the power system reliability. The effect of the active failure is proposed and analyzed to evaluate the power system reliability by the amending parameter method and the simulating failure method. in this paper. The need of the considering active failure is verified...

Classical random forest (RF) is suitable for the classification and regression tasks of high-dimensional data. However, the performance of RF may be not satisfied in case of few features, because univariate split method cannot bring more diverse individuals. In this paper, a novel method of node split...

The author aims to reinterpret Mitry’s conclusion on film being the “art of association” by examining the similarities between film and memory through discussion of intellectual, expressive montage and symbols. The paper includes philosophical discussions on Schopenhauer, Cassirer and Parfit’s theories,...

Digital-intelligent transformation has become the core driving force to reshape the public governance system and improve administrative efficiency, while the shortage of talents and insufficient digital literacy have become the key bottlenecks restricting the transformation process of the public sector....

According to the mathematical method of target optimization, the automatic control mathematical model of fault diagnosis and computer program algorithm has been set up, and computer TV sound abnormal noise fault automatic elimination system has been designed.The experiment and computer simulation are...

There are a large number of throats in tight sandstone reservoir, the throat morphology is various and the distribution of throat radius is wide. These characteristics have great influence on the permeability of the tight sandstone reservoir. However, it has not been well studied. In this paper, we address...

Previous research has shown that aviation fuel costs are the first major cost of air operations, and it is a key factor in profit and loss. In the operating environment under the combined effects of many factors, regardless of operating costs breakeven only to calculate the critical point of save fuel...

Financial management course has very strong applicability, so it is required to combine theory teaching and practice teaching in this course. It is found from the research on financial management course that it is very necessary to implement practice teaching. Thus, project teaching method should be...

Aeroelastic response of gust is always an important problem in flight quality assessment. In this study, structure and aerodynamic solvers based on Lagrange equation and Euler equation are coupled with loose coupling method. Elastic general-purpose airplane and a high-aspect-ratio transport airplane...

The modernity construction of Zhou Zuoren's literary thought of Chinese vernacular prose has many different sources, Zhou's translation of Japanese and ancient Greek poetry should be one of them as it shows important mutual-authentication connection to the construction. His poetry translation, though...

Based on the CIPP model, this paper constructs an analysis model of Chinese postgraduate scholarship evaluation policy from four dimensions of Context evaluation, Input evaluation, Process evaluation and Produce evaluation. In policy background, we use questionnaires and SPSS to survey three representative...

The emergence of a cashless society and technical innovation has gained substantial global popularity. Cashless cultures have existed since the dawn of human civilisation, relying on barter and other means of exchange. A totally cashless society refers to the process and results of replacing physical...

In this paper, the surface flashover characteristics of polytetrafluoroethylene (PTFE) under normal atmospheric pressure are studied. The DC power supply voltage is measured under the condition of different pole spacing, and the discharge voltage waveform and current waveform are recorded. In addition,...

To study the components and parameters relationship between MMC - STATCOM and traditional STATCOM, the mathematical model of MMC-STATCOM is established. Then, the equivalent expressions for MMC-STATCOM module capacitance and inductance bridge arm are derived, compared with traditional STATCOM. On account...

With the rapid development of society and economy, higher education in China has shown a high momentum. The types, levels and specifications of running schools of various colleges and universities in China are very distinctive and unique, and their talent training modes are also more diversified. The...

As a public resource, the self-repair room of university library is favored by its comfortable and quiet learning environment and convenient and convenient access to learning resources.However,there is a widespread phenomenon that library seats are occupied.In this paper, a kind of university library's...

This paper summarizes the situation of the technological innovation in China's manufacturing industry, analyzes the reasons of the problems from the perspectives of total factor productivity, financial level and technological innovation reserves. Based on the background of the construction of the innovative...

The circulation industry currently has an important impact on economic transformation. In this context, this study compares the relevant literature in this field and uses factor analysis to measure the circulation efficiency value based on the relevant annual data from 2010 to 2020 in China, so as to...

To further promote the healthy development of the power industry and assist in achieving the goals of “carbon peak and carbon neutrality”, it is necessary to accelerate the construction of a new type of power system. In order to better adapt to the new changes brought about by the construction of the...

Adsorption of Co(II) on synthesized chitosan-g-poly (acrylic acid) hydrogel was investigated, using batch adsorption technique under different experimental conditions of equilibrium pH, concentration of common competing ions, contact time and temperature. The Langmuir adsorption model fitted the experimental...

The application of FRP in civil engineering has emerged as a popular method of column retrofitting and strengthening. Numerous experimental studies have proven that the confinement with FRP-wrap or tube encasement could enhance the strength, ductility and durability of concrete columns. The variation...

This paper describes the implementation of literacy used by early childhood teachers in language learning in schools. With the background of the modern era and globalization, the purpose of this study was whether print literacy is still necessary and important to be used in early childhood language learning...

Capital is the foundation for the survival and development of enterprises and the soul of enterprises. However, the problem of capital precipitation is more and more seriously restricting the survival and development of enterprises. Enterprises are on the one hand a large amount of capital precipitation,...

The sun's shadow positioning technology is a method of determining the video filming location, through the analysis of object's shadow change in the video. After consulting relevant literature, we get the mathematical model for positioning by using the shadow of object, and predict the location in the...