bluuebunny/crossref_metadata_2025_split huggingface dataset:
The measure of agricultural modernization level in Shanxi Province based on entropy method
Authors: Juan Wang , Pengjuan Shi 
Published: February 2021

Abstract
“Three rural issues” has been the party and the country’s attention to the major issues. The development degree of agricultural modernization directly decides the realization of national modernization. By constructing the evaluation index system of agricultural modernization in Shanxi Province and using entropy method to calculate the development level of agricultural modernization in Shanxi Province, the research results show that the level of agricultural modernization in Shanxi Province generally presents an upward trend, but the rising speed is not fast. Through analysis, it is found that the decrease of its sustainable development level leads to the hindrance of agricultural modernization. On the basis of this analysis, this paper combined with the actual situation of Shanxi Province, from the sustainable development, technology, innovation and other aspects of countermeasures and Suggestions.
Operation characteristics and key technology analysis of high-penetration renewable energy microgrid
Authors: Longbo Mao , Shuai Tang , Shu Li , Wenqiang Wang , Weijun Wang 
Published: February 2021

Abstract
With the increasing penetration rate, the strong intermittency and volatility of renewable energy, and the large-scale use of power electronic devices, the safe and stable operation of microgrids has been seriously affected. This paper analyzed the impact of high-penetration renewable energy on power system flow distribution, power quality, operating status, relay protection, etc. And specifically studied several specific keys to improve the operating stability of the microgrid including high-penetration renewable energy.
Research on the Green Development of Space Defense System and Construction Technology of Great Walls in Shahukou
Authors: Shang Ruihua , Qiao Jianfeng , Han Pengju , Qin Huichuan 
Published: February 2021

Abstract
To study the characteristics of green development of the ancient Great Walls, this paper studies the space defense system in Ming and Qing dynasties and construction technology of Shahukou by means of literature review and on-the-spot investigation. The conclusions are as follows. The ancient Great Walls in Shahukou is a large and deep spatial structure which composes of Shahukou pass of Great Walls, Shahu fortress, and different types of piers. The attackers need to occupy city towers over city gates in Shahu Fortress and corner tower over Mamian pier, while the defenders need to carry out fire prevention and anti-collision work for the gate and gate hole in Shahu Fortress. Rammed materials has experienced many stages, such as ginger stone and yellow mud, grass mud, tabia, glutinous grain pulp tabia, and glutinous grain pulp mortar. Timber construction, timber component, and timber formwork were existed timber in the construction process in ancient Great Walls. The reason why large area of covered bricks lost was that a through joint was formed between the brick layer and the rammed soil.
The Influence of Air Quality on Solar irradiances in most air polluted months in China
Authors: Fei Zeng , Jinye Zhang , Ruibei Liu , Hui Lv , Mingjie Wang , Ling Yang 
Published: February 2021

Abstract
Solar energy, as a kind of clean and sustainable energy, is widely used in most countries, and the number of PV generators is increasing year by year in China. The solar energy generation directly depends on the amount of solar irradiance, which is easily affected by atmosphere situation. With the rapid development of urbanization and industrialization, the atmosphere situation in China become worse and worse, and the air is always heavily polluted in recent years, which will reduce the irradiance getting to the ground. In order to analyze the effect of air quality on the solar irradiance, we analyze three kinds of solar irradiance Direct Normal Irradiance (DNI), Global Horizontal Irradiance (GHI), and Diffuse Irradiance (DIF). The influence of the Air Quality Index (AQI) on DNI, GHI, DIF are analyzed from November to February in the most air polluted months in recent four years for Beijing, Harbin, Shanghai and Guangzhou. The date when the AQI was the local maximum(minimum), DNI and GHI were the local minimum(maximum), and DIF was also the local maximum(minimum) are selected. The results shows that DNI and GHI decrease, and DIF increases with the increase of AQI,. The six-order polynomial is used to fit the difference of the three irradiance and the difference of AQI. The average fitting coefficient R2 for GHI is 0.8855, DNI is 0.8529 and DIF is 0.8466, and the highest R2 for GHI is 0.9748, DNI is 0.9794 and DIF is 0.9820.
Hubei flavor batter lotus root stuffed with meat innovation and nutrition
Authors: Ding Hui 
Published: February 2021

Abstract
Bat lotus root stuffed with meat, also known as lotus, is a kind of fried food wrapped with batter. It is crispy and golden outside, tender and juicy. It is popular among people. The innovation of dishes with meat has regularity and rationality: ingenious conception, high conception and complete nutrition.
Fabrication and characterization of the enhanced tensile strength xanthan/curdlan/gelatin blend films for food-packaging applications
Authors: Zhu Yu 
Published: February 2021

Abstract
Food packaging films are generally used to protect the food from outside harsh environment. Moreover, their main purpose is to prolong the shelf life and to maintain the freshness of food. Generally, plastic materials are widely used for this purpose. However, these plastic materials are causing a serious threats to our environment due to the problem of non-degradability. In this regard, biodegradable biopolymer materials are contemplated as an important alternative due to the environment friendly characteristics. However, the packaging films prepared from single pure polymers have been reported to possess very poor mechanical properties. Therefore, blending of two or three biopolymers is considered to synergistically improve the mechanical properties of biopolymer based films. In this work, we made a novel blended films of xanthan (X), curdlan (C) and gelatin (G) by mixing different ratios of all three polymers. After successfully preparing and optimization of these blended films, mechanical properties and moisture absorbance properties of all these films were determined. Based on the results, it was concluded that the highest tensile strength of 38.22±0.7 MPa was found in the T2 treatment of 20:20:60 ratio of X/C/G blend films. In addition, highest elongation at break of 18.92±0.5% was also found in the same rational of X/C/G blend films. Moreover, characterization techniques such as FT-IR and SEM analysis were also performed to analyze the structural properties of blend films. Finally, SEM micrographs indicated that all the blend films exhibited a uniform, smooth, homogenous and compact outer surface morphology. In short, this novel xanthan/curdlan/gelatin films resulted in improved mechanical properties of blend films, which confirm its suitability as promising food packaging material.
An improved centroid localization algorithm based on acoustic for proton range verification
Authors: Ye Jiaquan , Yang Jun , Tang Kun , Lanxin Nie 
Published: February 2021

Abstract
The proton beam generates a unique acoustic signal, which can be used for range verification. It is a crucial issue to use the acoustic signal for accurate positioning. The propagation of sound waves emitted by a proton pulse(20 MeV, 1 × 107protons) is simulated, and acoustic signals are recorded. The distance between sensors and Bragg Peak is calculated by the time of arrival and speed of sound. An improved centroid localization algorithm based on trilateration is presented to locate the Bragg Peak with the distance. After evaluating the verification accuracy of different methods, the results show that this algorithm significantly improves the verification accuracy.
Research on Operation Performance Evaluation of Listed Mining Enterprises in Jiangxi Province Based on DEA-BCC Model
Authors: Jun-hua Hou , Xiao-di Zhang , Feng Zhen 
Published: February 2021

Abstract
In the new economic environment, in order to further expand and strengthen the local mining industry and realize the sustainable development of geological and mineral resources, it is necessary to effectively transform the advantages of geological and mineral resources into industrial and economic advantages with scientific operation performance management. Based on this, this paper constructs a DEA-BCC model for performance evaluation of geological and mining enterprises in Jiangxi province, and conducts evaluation and research on the operational performance of geological and mining enterprises in Jiangxi Province. The research shows that in recent years, the mining enterprises in Jiangxi province have been developing well on the whole. However, some enterprises have too small scale and poor production efficiency, so they should strengthen cost control, appropriately expand scale, pay attention to scientific and technological innovation development, and improve the quality of employees to improve the level of business performance.
Research on Control Technology of Distributed Power Generation Virtual Synchronous Generator
Authors: Shuai Tang , Weijun Wang , Shu Li , Longbo Mao , Wenqiang Wang 
Published: February 2021

Abstract
Virtual synchronous generator control technology, as a method that enables distributed inverter power supplies to have similar characteristics to synchronous generators, has an important supporting role in improving the stability of the power system. Based on the rotation equation and electrical equation of the synchronous generator, this paper firstly constructed the virtual synchronous generator topology and mathematical model; then designed the corresponding virtual synchronous generator active-frequency droop control and reactive power-voltage droop control strategies, and through the frequency domain method, this paper analyzes the influence of key control parameters. Finally, the related control strategy is verified in the Matlab/Simulink simulation model. The results show that the proposed control strategy can seamlessly switch between off-grid and grid-connected modes, and has good frequency and voltage support capabilities.
Vertical Transfer of Cd Content Between Two Parallel Currents in Opposite Motion
Authors: Dongfang Yang , Li Qing , Zhang Longlei , Wang Qi , Li Haixia 
Published: February 2021

Abstract
Based on the investigation data about Cd in Jiaozhou Bay in August, 1992, we calculated the horizontal increase amount and vertical diluted amount of Cd content in surface and bottom layers from the southwest waters of the bay to the west waters of the bay mouth, and set up the model block diagram of horizontal and vertical changes of Cd content. The results present that in August, the absolutely increase amount of Cd content in surface and bottom layers was 0.16-0.34μg/L, and the relatively increase amount of Cd content in surface and bottom layers was 51.51-66.66%. In the waters of southwest bay and west bay mouth, Cd content in surface and bottom layers had absolutely vertical diluted amount of 0.24-0.42μg/L, and its relatively vertical diluted amount was 63.63-75.00%. In the horizontal migration process of Cd content in the surface and bottom layers, the horizontal increase amount of Cd content in the surface and bottom layers reached a relatively high level from the southwest of bay to the west of bay mouth. It reveals that in the bay waters, in the parallel and opposite movement of the two currents, the current entering into the bay carried a high value of Cd content, and the Cd content migrated from the water with high content to the water with low content through the diffusion and migration of Cd content. Moreover, the migration direction of Cd content was perpendicular to the parallel movement direction of the two currents. In this way, the low-value Cd content in the outward current was increased, and at the same time, the vertical diffusion, migration and settlement of the high-value Cd content led to the increase of the Cd content in bottom layer in the outward current. In the process of vertical sediment of Cd content in the surface and bottom layers, the current had a low value of Cd content in the bay waters, and the vertical diluted amount of Cd content in the surface and bottom layers reached a high level; in the bay mouth waters, the current had high Cd content, but the vertical diluted amount of Cd content in the surface and bottom layers was also very high. In conclusion, the vertical diluted amount of Cd content in the surface and bottom layers kept a high value regardless of whether the current left the bay or whether the current carried high or low Cd content.
Design of China’s Electricity Market Evaluation Indicators Based on SCP Model
Authors: Kening Chen , Qu Haoyuan , Ma Qiuyang , Luo Zhiqiang , Wenjun Zhou 
Published: February 2021

Abstract
The establishment of China’s electricity market has been conducted since 2015. In order to inform the condition of electricity market operation through evaluation index, this paper proposes an evaluation index system based on structure-conduct-performance (SCP) model, containing three principal aspects: market structure, participant behavior and market benefit. Meanwhile, considering the specific situations in China such as the differences among provinces and the immature rules in the initial stage of market construction, some of the market evaluation indexes should be specially designed in order to adapt to China’s national conditions.
Analysis of the Grey Correlation between Energy Consumption and Economic Growth in Fujian Province
Authors: Yisui Huang , Huang Yan , Jianbin Qiu 
Published: February 2021

Abstract
Based on the data of energy consumption and economic growth in Fujian Province from 2007 to 2018, the correlation degree between energy consumption and economic growth is studied by using grey correlation analysis. The results show that the the gross domestic product (GDP) of Fujian Province is significantly correlated with the energy consumption products. The correlation degree is greater than 0.7. The order of the correlation degree is oil, coal, hydropower, wind power nuclear power and natural gas. The correlation is significant between the total amount of energy consumption and the value added of primary, secondary and tertiary industries in Fujian Province. The correlation degree is more than 0.6, indicating that the economic growth of Fujian Province is more dependent on energy consumption. Fujian Province should optimize its energy structure, vigorously develop clean energy and realize the development strategy of low-carbon economy.
A review of fatigue life prediction method for portal crane
Authors: Ren Li-xin , Ma Jian-qiang , Tong Yao-ting , Huang Zheng-qiu 
Published: February 2021

Abstract
The primary damage cause of crane is fatigue damage. The fatigue life prediction method determines service life and the design of the crane. So it is very important to study the prediction method of fatigue life. This paper summarize the existing prediction methods of fatigue life systematically. The research of fatigue life was involved in mechanics, metal material, vibration mechanics, fracture mechanics, fatigue theory and so on, which made a difference between the predicted result and the actual life. The development of the fatigue life evaluation methods are promoted because of the application of new skills, but it still needs more learning.
Application of transformer heavy load and overload analysis and management system
Authors: Qiang Fan , Yuanyuan Chen , Yi Wen , Qiansu Lv , Ning Xiao , Xun Zhang , Jinjin Wan 
Published: February 2021

Abstract
In recent years, with the development of China’s economy and society, the social electricity consumption increases rapidly. As a support for the development of the national economy, the scale of power grid has expanded. The load capacity of oil-immersed power transformer is an important safety and performance index. Limited load capacity or overload may cause a large area of power grid blackout. Therefore, it is necessary to analyze and control the transformer heavy load and overload.
Distributed Optimization Planning of Rural Transformers Considering New Load and Low Voltage Side Interconnection
Authors: Wang Zhanwei , Chen Haidong , Deng Shiyu , Wu Jian , Li Demin , Li Jiwei , Sun Yueting 
Published: February 2021

Abstract
In order to adapt to the development needs of new load access to rural power grids, solve the problem of low utilization efficiency of related equipment, and take into account economy and power supply reliability, this paper proposes a distributed optimization planning method for rural transformers considering new load and low-voltage side interconnection. First, this paper establishs a load forecasting model that considers new types of loads such as electric heating; secondly, it builds a distributed distribution transformer network planning model with the goal of minimizing overall costs, and applys the Voronoi method to plan distribution transformers; finally, it combines the location of the distribution transformer and its power supply Scope, using the minimum spanning tree theory of graph theory to generate low-voltage line layout schemes. This paper is based on Matlab R2014a simulation platform to plan the distribution of typical power supply areas. The results of calculation examples verify the feasibility of this method, which can improve the economy and reliability of power supply by reducing losses.
A Study on the Safety Assessment for Portal Cranes Based on Analytic Hierarchy Process
Authors: Zhang Bin , Wei Bo-zheng , Ren Li-xin , Ouyang Wei-ping 
Published: February 2021

Abstract
This paper introduces the current safety situation of portal crane and the deficiencies of current supervision methods, and proposes the application of new methods for the safety assessment of equipment. The safety assessment method for portal cranes based on the Analytic Hierarchy Process (AHP) is studied, and the safety assessment method applicable to the portal cranes in service is obtained. By defining the equipment safety performance assessment value D, the real-time status and risk level of equipment can be expressed tangibly and clearly.
Impact of China carbon emissions trading mechanism on industrial competitiveness: Evidence from Beijing
Authors: Lu Min , Wang Yang , Wang Xing 
Published: February 2021

Abstract
Competitiveness change after the establishment of carbon emissions trading mechanism is explored on the basis of Beijing industry energy consumption and carbon price data. It is demonstrated that additional costs incurred by carbon trading mechanism have less effect on the industrial competitiveness. Scenario analysis is also conducted to discuss changes under different price.
The Research and Development of Safety Assessment Software System for Portal Cranes
Authors: Tong Yao-ting , Huang Zheng-qiu , Ren Li-xin , Ouyang Wei-ping 
Published: February 2021

Abstract
The safety assessment index system is formulated for portal cranes according to the operation features of this type of crane. The comprehensive assessment matrix and subsequent assessment results are finalized for all levels of index according to the variable weight analytic hierarchy process (AHP). The safety assessment software system is developed for portal cranes on the basis of above outcomes. Relying on C# programming language, the software has enabled the functions of data acquisition and result processing. In addition, it shows a remarkable utility value of the safety assessment of portal cranes and is capable of the safety assessment for the portal cranes in service.
Evaluation of Cadmium Accumulation and its activity in Northeast China
Authors: jiang Yutong , Zheng Haoyuan , Zhang Jing , Guo Wenmiao , Wang Jun 
Published: February 2021

Abstract
In this study, the concentrations of total Cd and available Cd in different cultivation greenhouses were investigated to illuminate the effect of greenhouse on Cd accumulation and its activation under greenhouse vegetable production (GVP). The results revealed that higher Cd contents (including total Cd and available Cd) accumulated in GVP surface layer (0-20 cm), and increased with duration years. Total Cd contents and Cd activation rate were positively correlated with GVP duration (P<0.05). Cd accumulation and activation in soils were mainly ascribed to anthropogenic input, such as heavy inorganic or organic fertilizer application. For greenhouse sustainability, much more attention should be paid to Cd contents in soils of 13-yr greenhouses.
Research on interactive response strategy of power demandside resources participating in power grid
Authors: Han Song 
Published: February 2021

Abstract
At present, it is difficult to cope with the increasingly severe power supply and demand situation and large-scale renewable energy grid connection demand only relying on generation side dispatching mode adjustment. With the deepening development of energy Internet, new demand side resources such as distributed generation, energy storage and electric vehicles are gradually exploited, and their value is more prominent. In order to adapt to the impact of large-scale renewable energy grid connected operation on the security and stability of power grid, it is necessary to comprehensively sort out the types of power demand side resources and study their participation in the interactive response strategy of power grid, so as to effectively ensure the safe and stable operation of power grid.
Approximation of Propagation Function of Transmission Lines Using Vector Fitting With Aid of a Hybrid Genetic Algorithm and Differential Evolution Algorithm
Authors: Yu Y. , Li Y.J. , Wang D.H. , Ge Q.Y. , Jiao C.Q. , Sun J.W. 
Published: February 2021

Abstract
Vector fitting is a powerful tool for function approximation. However, when it is adopted to approximate the propagation function of transmission lines, the number of poles and corresponding delay times need to be determined beforehand. The conventional determination method is inefficient. In this work, the parameters are determined by a hybrid genetic algorithm and differential evolution algorithm (HybGADE). The proposed approach can result in a better approximation of propagation function, which is proven by a successful implementation to an overhead single core coaxial cable.
Status and progress of membrane separation technology in water capture in flue gas
Authors: Ren Danghui , Li Zhimin , Ding Hongchang 
Published: February 2021

Abstract
The flue gas of power plant contains a lot of water, it is of great significance to save water resources if the water can be recycled and utilized. Gas membrane separation technology, which integrates the advantages of low investment, small area, simple operation and no secondary pollution, is considered to be a feasible technology to effectively realize the recycling of water resources. It has become a research hot spot of flue gas treatment in power plants. This review refers to the completed and ongoing research on membrane separation of water in flue gas and summarizes the advantages and challenges of current membrane-based technologies in water resource recovery.
Mathematical Modeling of bacterial biofilm quorum sensing
Authors: Shen Hanzhen 
Published: February 2021

Abstract
Biofilm refers to an extremely complex and highly organized microbial community attached to the surface of the carrier, which exists widely in the natural and industrial environments and affects human life and health. Quorum sensing is a special information communication system in bacterial biofilms, which is involved in the regulation of a variety of bacterial life habits and physiological processes and is conducive to the better adaptation of bacteria to the external environment. The communication of information in bacterial biofilm has been neglected for a long time, so it is very important to study the quorum sensing process of bacterial biofilm.