scholarly journals Research on China’s Energy External Dependence and Energy Strategy

2021 ◽  
Vol 245 ◽  
pp. 01047
Author(s):  
Yu Lulu ◽  
Li Zhao

After the reform and opening up, with the rapid development of economy and science and technology, high-tech products such as high-speed railway, train, aircraft, missile and rocket appear in response to the times. As people’s living standards develop, they have a high consumption demand towards energy. For example, coal gas and natural gas take the place of firewood, and various new energy such as wind energy, tidal energy and solar energy emerge. China is now seeing a rapid industrialization. Although the amount of China’s energy is large, the rigid demand of energy remains tense in supply and demand. Relatively speaking, China has a high energy external dependence, thus a series of measures were launched such as greatly advocating the implementation of new energy and reducing the exploitation quantity of coal properly. This paper will analyze the import and export data of various kinds of energy from 2015 to 2019 and calculate the external dependence level in 2019. After analyzing the current situation in China and consulting the national policies and information, the author will put forward suggestions on the current situation of China’s energy.

2017 ◽  
Vol 1 (1) ◽  
pp. 26
Author(s):  
Tianrui Kou

In recent ten years, the rapid development of China high-speed railway is called "China miracle", and it not only provides great convenience for people's daily life trip, but also greatly promotes the economic development. However, the annual spring transportation in the special period is still a great challenge to high-speed railway transportation, and this paper analyzes the high-speed railway ticket for spring transportation from the perspective of microeconomics, and then thinks for the solution.This paper specifically analyzes the problem that demand exceeds supply for high-speed railway ticket by using the theories of the demand elasticity of supply and demand and the influence of price on supply and demand, monopoly markets. In addition, opportunity cost, incomplete information and other economic principles are used to think about the theoretical reasons for the difficulty of buying tickets during the spring transportation. I have given my understanding for the two problems owned by China spring transportation, and the corresponding countermeasures and suggestions. For example, speed up the development of substitutes and carry out the mechanism of price fluctuation; In the ticket refunding mechanism, this paper boldly conceives the method to relieve the pressure through a reasonable and scientific ticket refunding mechanism. Finally, this paper starts from the source and find the key point to solve the problem of spring transportation in China by breaking the urban-rural dual structure.Hereafter the final conclusion was drawn: Although there are some problems to cope with the spring transport for the current China high-speed railway, it is believed that in the near future, the difficulty of buying a ticket in spring transportation will no longer hinder the homecoming of wanderers.


2014 ◽  
Vol 919-921 ◽  
pp. 1085-1090
Author(s):  
Yuan Huang ◽  
He Song ◽  
Chun Yan Jia

With the rapid development of our national economy, the fast process of city, regional passenger demand is increasing rapidly, high-speed railway emerging as the times requiring. High-speed railway has many advantages in essence and also some disadvantages. How to use its advantages, how to avoid their disadvantages, is important for the advantageous to improve the interests of the company on high speed railway transport department and railway sector, as well as the social development. Through the way of questionnaire survey, statistics and analyzes the main factors affecting the High-speed Rail passenger flow, provides more active mode of operation for the High-speed Rail department. This paper raised the urgent and realistic basis to improve the service level.


2011 ◽  
Vol 361-363 ◽  
pp. 1240-1243
Author(s):  
Hong Ze Li ◽  
Sen Guo ◽  
Li Wen Fu

Beijing is a typical city of energy resources shortage and there exists the contradiction between energy supply and demand. This paper analyzes the current situation and existing problems of Beijing’s energy utilization, and then forecasts Beijing’s energy supply and demand from 2011 to 2015 based on four kinds of grey forecasting models, finds out that the equilibrium of Beijing’s energy supply and demand is fairly weak with higher external dependence and there is a large room for improving the proportion of quality energy and for developing and utilizing renewable energy. Finally, on the basis of the current situation of Beijing's energy utilization and the development trend in the next few years, some suggestions are proposed.


2012 ◽  
Vol 203 ◽  
pp. 281-285
Author(s):  
Guo Ping Zhang

With the rapid development of modern world aerospace science and technology, hi-tech weaponry and high-speed transportation tools, industrial production and high-tech equipment manufacturers have increasingly urgent demand for high-performance metal materials. The cast aluminum is a new aluminum alloy series developed by foundry industry recently. Because it does not need the solid solution hardening process and has good mechanical properties, it's loved by the manufacturing sector. This paper targets at channel angular deformation direction to study the cast aluminum tissue material .


2021 ◽  
Vol 272 ◽  
pp. 01021
Author(s):  
Shihan Zhu ◽  
Jingjing Liu ◽  
Chenjie Wu

In the rapid development of science and technology today, environmental problems are becoming more and more serious; the construction industry as the first high energy-consuming field with human production and life, the promotion of green buildings is of great significance. Under the high-speed development mode, how to make green buildings develop steadily has become a problem to be solved by various industries in China. Through the literature research method and the social investigation method, this paper analyses the development constraints of green buildings from the perspective of the four participants of market economy: government, real estate enterprises, consumers and practitioners. Respectively put forward some suggestions such as policy regulation, enterprise norms, green talents cultivation and collect feedback.


2011 ◽  
Vol 127 ◽  
pp. 224-227
Author(s):  
Tao He ◽  
Qiu Fang Zhao ◽  
Ji Song Zang

Along with the rapid economic development in China, productions and sales of automobiles are growing at a high speed .The rapid development of the car market and the large increase of auto possession brought a huge demand of oil resources .The high external dependence has affected our country's energy security. The application of diesel blended the ethanol can ease the oil shortage, reduces atmospheric environment pollution and helps to realize sustainable development strategy of our country. This paper mainly conducts the research on diesel engine with ethanol fuelling, experimentally studied and analyzed the influence of ethanol blended diesel on the dynamic performance, economy performance and emission performance. The results show that Ethanol blended diesel can partially substitute diesel and effectively reduce the harmful pollutants while keeping the same power and economy.


2021 ◽  
Vol 329 ◽  
pp. 01022
Author(s):  
Pengcheng Zang ◽  
Zhijun Xu ◽  
Yan fei Su ◽  
Yingjun Li

With the rapid development of local economy, the frequent occurrence of extreme climates, and the increase in the scale of new energy installations, short-term peak loads have repeatedly reached new highs, and the characteristics of the power system "double high, double peaks, and double-sided random" will be further highlighted, making the power grid supply and demand Balance faces greater challenges. In this context, the role of electricity demand response has become more prominent. Therefore, based on the principle of market elasticity, this paper studies the interactive response relationship between electricity price and load, establishes a demand response model based on price elasticity, and verifies demand response projects based on actual cases. The effect of peak clipping and valley filling.


Author(s):  
Xiang-Wen Xiong ◽  
Bear L. Wynn

Along with more and more fast development of the mechanical engineering, more and more high-tech utilize in the mechanical engineering, caused the mechanical engineering to enter the time of the high intelligence and the high-tech. This is a brand-new, time that comprehensive utilization integrated technology, and the intelligent technology, the robot technology, cross discipline high-tech frequently use in the mechanical engineering. But the modern mechanical engineering as a new technology that development by tradition engineering frequently has some technology of the neck of a bottle of the traditional engineering barrier the further development of the new mechanical technology, even is the high speed development. Therefore, comprehensively eliminates the weak link of the traditional technology in the mechanical engineering, enable the constituent of each technology of mechanical engineering all to obtain the rapid development, is the key to modern mechanical technology. This paper is precisely according to this spirit and the request, in view of Basis weak link of the mechanical engineering–datum, proposed the brand-new electronic datum new technology replace the traditional mechanical datum, causes mechanical engineering again configuring in a new base of datum on, thus thoroughly eliminates the technology of the neck of a bottle of the traditional technology, enable the humanity mechanical engineering to obtain the comprehensive enhancement and the sublimation once again.


2014 ◽  
Vol 556-562 ◽  
pp. 6119-6122 ◽  
Author(s):  
Qian Zhang ◽  
Qing Qing Zhang ◽  
Yun Ze Wang

OA (Office Automation, OA) has been developed rapidly in the 1970s and introduced into China. In the 1990s, it has entered the high-speed development stage. With the rapid development of mobile internet technology, it will be a trend to apply such a high-tech to office automation. Meantime, there has introduced the workflow development approach to development in the overall system implementation. This thesis presents strategy on design and implementation on workflow based mobile office automation. With the rapid development of mobile internet technology, it will be a trend to apply such a high-tech to office automation. Meantime, there has introduced the workflow development approach to development in the overall system implementation. This thesis presents strategy on design and implementation on workflow based on mobile office automation.


Author(s):  
E.D. Wolf

Most microelectronics devices and circuits operate faster, consume less power, execute more functions and cost less per circuit function when the feature-sizes internal to the devices and circuits are made smaller. This is part of the stimulus for the Very High-Speed Integrated Circuits (VHSIC) program. There is also a need for smaller, more sensitive sensors in a wide range of disciplines that includes electrochemistry, neurophysiology and ultra-high pressure solid state research. There is often fundamental new science (and sometimes new technology) to be revealed (and used) when a basic parameter such as size is extended to new dimensions, as is evident at the two extremes of smallness and largeness, high energy particle physics and cosmology, respectively. However, there is also a very important intermediate domain of size that spans from the diameter of a small cluster of atoms up to near one micrometer which may also have just as profound effects on society as “big” physics.


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