bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on Top-Down Design Method of Internal Combustion Engine based on NX Future Development
Authors: Huang Zhigang , Zhang Wenping , Zhang Xinyu 
Published: October 2019

Abstract
With the development of internal combustion engine, how to design complicated parts of internal combustion engine quickly and effectively is of great significance. In view of the rapid prototyping design research of internal combustion engine parts, we firstly formulate a prototype model design criterion. From the sketch parameterization, shape feature parameterization and assembly parameterization design ideas, we propose a parameterized model construction method in order to meet the requirements of model accuracy and extensibility in the top-down design of internal combustion engine. Then according to the performance of internal combustion engine and the structure characteristics of main parts, we develop a system design process and a part design process. At the same time, we put forward a top-down design platform for internal combustion engine, analyse platform development functions, platform development framework and platform development process. Finally accomplishing the prototype of internal combustion engine based on NX development and a complete development technology system of internal combustion engine platform so as to improve the success rate of internal combustion engine design.
Integrated Control Optimization of Dual Clutch Transmission Gears for Electric Vehicles
Authors: Sheng Jiawei , Tian Jinyue , Gu Yihui , Jia Yongtong 
Published: October 2019

Abstract
The control of the transmission shift in vehicles is significant for driving comfort. In order to analyze the shift quality effectively, the transmission system dynamic parameters are taken as the input variables, and the comprehensive evaluation index of the weighted form of the jerk and friction work is introduced to determine the optimization objective function. The optimization problem of dynamic parameter input variables is transformed into the parameter optimization problem that particle swarm can be processed by Fourier transform. So the optimal torque trajectory of the motor and clutch during the upshift is obtained.
Design of Dual-energy Signal Acquisition and Driving Circuit for Logistics Park Based on CPLD
Authors: Ren Jiao , Zhang Shaohua 
Published: October 2019

Abstract
With the increase of security and defense, the security inspection of logistics park has put forward high requirements, and the perspective imaging technology of truck has become the most important. In this design, a high-speed parallel programmable logic device CPLD and Verilog HDL language are used to design the driving circuit of the perspective imaging signal acquisition part of truck, which can not only realize high-speed signal acquisition, but also have high integration, high accuracy and strong anti-interference ability, and other characteristics. The simulation and experimental results show that the driving circuit can satisfy the requirements of high efficiency, high reliability and fast imaging for the perspective imaging technology of freight cars.
Thermal Conductivity Simulation of High Temperature Overalls Materials
Authors: Hu Weiye 
Published: October 2019

Abstract
When workers work in high temperature environments, they need to wear high temperature work clothing to avoid burns. The garment is often composed of three layers of fabric material, which are referred to as layers I, II, and III from the outside to the inside, and there is a gap between the layer III and the skin. We refer to this void as the IV layer. In order to make the design of special clothing more efficient, reduce research and development costs, and shorten the development cycle, this paper uses mathematical models to determine the temperature changes outside the skin of the dummy. We assume that the body temperature of a dummy wearing a high temperature workwear can be controlled at 37 °C. We have established a set of thermal differential equations as a heat transfer model for the four layers of high temperature work clothing. First, we consider three heat transfer modes of heat conduction, heat radiation and heat convection, and analyze the heat conduction form of each layer to obtain a one-dimensional unsteady heat transfer model. Then, the numerical solution of all partial differential equations is obtained by the finite difference method of Crank-Nicolson format, and the temperature distribution outside the skin of the dummy is obtained. Finally, this paper gives a proposal for the design work of four-layer high temperature work clothing in combination with the actual situation.
Research on Tower Elevator Power Supply Mode Matching Maintenance Period and Wind Power Curtailment
Authors: Wang Fujing , Xie Lirong , Zhang Fang , Chao Qin , Li Jinwei 
Published: October 2019

Abstract
In order to reduce the difficulty of maintenance and Increase the utilization of wind power, this paper proposes a new program of internal consumption. First of all, through the main influencing factors which contain wind speed and direction of theoretical wind power, building history NWP data and the mapping theory possible output reflection database; Secondly, using clustering method to screen the better consistency historical samples and neural network model to generate the power demand forecasting curve; Finally, the forecast curve of wasted wind power is matched with the maintenance downtime. Analysis of historical data of a wind farm in XinJiang region show that the power supply mode of consuming wasted wind power during maintenance time is feasible. This model can effectively improve the utilization rate of wind energy, it also provides reference for related research.
A Prediction Approach of Hot Electric Power Researches for Heterogeneous Time Spans
Authors: Ma Yan , Qi Wei , Qi Dali , Chen Yufeng , Zou Lida 
Published: October 2019

Abstract
Recently with the rapid growth of electric power literatures, it is hard to artificially track and process hot electric scientific researches. In the past most, professionals use simple statistics to get high-frequency words, which is time-consuming and ignores the similarity between words. Moreover, different researchers have different requirements for prediction time span. In the paper we propose a prediction system for hot electric scientific researches and gives its implementation. It is based on our previous work and we improve it to suit indefinite prediction period. The proposed embedded RNN prediction model is flexible for heterogeneous time spans and can return prediction results rapidly and accurately. Our extensive experiments demonstrated that our approach has acceptable precision ratio as well as training time in comparison to SVM, RNN and linear regression algorithms. It also performs better when the embedded layers are multiple.
Based on The Comparative Study of The Economic Load Coefficient of a Double-Winding Transformer in Operation in A Certain Area
Authors: Zhang Tianyi 
Published: October 2019

Abstract
Extract the transformer parameters in operation in a certain area. After considering the selection of transformer characteristic parameters and the transmission in the system, the load coefficients of 17 double-winding transformers with 3 capacities are calculated theoretically. It is concluded that the economic load coefficient of various types of transformers in actual operation and the general value is about 0.5. People used to transformer economic load coefficient is 0.75 questioned.
The New Non-Volatile Based On STT-MRAM Lies in The Design and Implementation of High-Speed Cache of Magnetic Random Memory Material
Authors: Liu Tian , Zhang Wei , Xu Tao , Wang Guan 
Published: October 2019

Abstract
With the development of semiconductor technology, the buffer of processor integration is getting larger and larger. The high-speed design of storage capacity of traditional memory devices has an important connection with cache. How to design new non-volatile magnetic random memory has become an important step. To solve these problems, researchers at home and abroad have discussed a large number of new non-volatile memory technologies, which have excellent characteristics such as non-volatility, low power consumption and high memory density. The key optimization techniques for the disadvantages of high write power, limited write life and long write latency of the new non-volatile memory are analyzed. Finally, the possible research directions of new non-volatile memory devices in future cache optimization are discussed.
Profitability analysis of hydropower enterprises - Take GGEP as an example
Authors: Li Yanqin 
Published: October 2019

Abstract
Profitability is an important part of the business activities of an enterprise. This paper focuses on analyzing the profitability of listed hydropower companies by taking GGEP as an example, and also discusses the environmental factors affecting the profitability of GGEP, and puts forward Suggestions to improve the profitability of enterprises.
The Status quo and Issue of the Guangdong Electricity Market
Authors: Sun Qian , Wu Geng , Tian Lin , Fan Pengfei , Huang Yuanming , Zeng Zhijian , Xie Yuting , Hu Xiuzhen 
Published: October 2019

Abstract
With the implementation of electric power industry reform in China, establishing the efficient electricity, which can be suitable for China’s national conditions, becomes one hot topic. Guangdong is the earliest pilot in this reform, and it has the most active market trading in China. So it is imperative to analyse the status que and issue of the Guangdong electricity market, consequently the experience and problem can be referenced when the other province or region establish the electricity market.
Research on Data Acquisition Algorithm
Authors: Rong Jiachao , Zhang Yang 
Published: October 2019

Abstract
This paper studies the inclusion relational structure connection algorithms in three basic structure relationships, namely MPMGJN algorithm, Stack-Tree algorithm and Queue-Tree algorithm. The MPMGJN algorithm is the most basic structure connection algorithm and is less efficient due to unnecessary scanning and searching during connection. On this basis, this paper compares and analyzes two improved cache-based structure connection algorithms, Stack-Tree algorithm and Queue-Tree algorithm. At the end of the paper, the Queue-Tree algorithm implemented in C# is given, and the algorithm is tested with simulation data.
Research on Multi-objective clustering Optimization of Logistics Distribution Line
Authors: Liu Shiming , Chen Huihong 
Published: October 2019

Abstract
In order to improve the ability of logistics distribution line optimization, a multi-objective clustering algorithm based on particle clustering is proposed. The maximum density sparse detection and adaptive optimization method are used to schedule the logistics distribution route. The particle swarm optimization (PSO) algorithm is used to construct the multi-objective optimization model of the logistics distribution line. The global optimization characteristics of the particle swarm optimization algorithm are used to optimize the logistics distribution route. PSO adaptive clustering method is used to realize multi-objective optimization of logistics distribution path. The simulation results show that the method has better performance in the optimization control of logistics distribution line, improves the efficiency of logistics, reduces the loss of logistics line, and improves the throughput performance of logistics line.
Research on hospital intelligent construction based on weak current network system
Authors: Liu Mengkai 
Published: October 2019

Abstract
The era of information technology has spawned the rise of intelligent buildings, and as the basic module of intelligent buildings, weak electricity technology, computer technology, communication technology, and control technology have jointly built an intelligent platform, especially in modern hospital buildings. A wider range of applications. Based on this, the paper combines practical engineering cases to explore the application of weak current systems in modern intelligent hospital buildings.
Multi-period Planning of Electric Taxi Charging Station Based on Genetic Tabu Hybrid Algorithm
Authors: Chen Kaimei , Peng Chaojing 
Published: October 2019

Abstract
As an auxiliary facility for electric taxi operation, the charging station has important significance for the promotion of electric taxis in terms of location, scale and construction time. Most of the existing research on charging station location focuses on static problems, ignoring the impact of station time on the location model. Therefore, based on the site selection and queuing theory, this paper proposes a multi-period and multi-level electric taxi charging station model, with the goal of the total construction cost, the cost of the station and the minimum waiting cost. Combined with the multi-starting point of genetic algorithm and the strong local search ability of tabu algorithm, the genetic tabu hybrid algorithm for solving this model is designed. The simulation example is used to analyze and verify the validity of the model and algorithm, which can provide important reference for practical multi-period charging station planning.
Indirect Vector Control for Stand-alone Operation Brushless Doubly Fed Induction Generator Employing Power Winding Stator Flux Orientated Approach
Authors: Ji Kai , Long Wenfeng , He Jinping 
Published: October 2019

Abstract
The brushless doubly-fed induction generator (BDFIG) provides an interesting alternative to the commonly applied conventional doubly-fed induction generator in wind turbines. In this paper, a novel voltage control strategy of stand-alone operation BDFIG for variable speed constant frequency wind energy conversion systems was presented. Based on the model of the generator, the power winding stator voltage and flux for stand-alone operation BDFIG are only determined by the equivalent PW stator magnetizing current which are independent of load, but PW stator terminal output power is only determined by load. An indirect PW stator flux orientated vector control scheme is employed to control the BDFIG by regulating the amplitude and frequency of the control winding stator current appropriately, and this results in constant generator terminal voltage and frequency for variations in both load and wind speed. In addition, simulation results prove the feasibility and validity of the proposed scheme, and excellent steady and dynamic state performance is achieved.
Research on Topology and Modulation Control Method of a Novel Three-Level Current-Fed DCDC Converter
Authors: Ji Kai , Chen Tingyang , Long Wenfeng , He Jinping 
Published: October 2019

Abstract
Multilevel current source converter has the benefits of high output capacity, low current switching stress and low harmonic or ripple content. This paper presents a new topology of three-level current-fed DC/DC converter for superconducting magnetic energy storage application. In this topology, a superconducting inductance acting as a constant current source and a shunt inductance acts as current divider ensure current flows through the power switch components equally to generate immediate level of current. A novel kind of pulse width modulation (PWM) switching strategy for the current instantaneous control of the current source converter was proposed. The modulation switching strategy proposed is able to effectively control the DC current output of the converter. Also, due to the both of proposed topology and control method are quite a simple, it can be easily realized in the practice. Simulation results prove the feasibility and validity of the proposed topology and modulation strategy
Research on harmonic suppression of output current based on double pulse width modulation
Authors: He Dejun , Jiang Peng 
Published: October 2019

Abstract
The dc power supply can effectively improve the reliability of the output voltage and current through parallel connection, but at the same time, there will be an increase in the output current voltage harmonic compared to a single dc power supply. For this problem. In this paper, the dc step-down chopper circuit is taken as an example to analyze the output current under the double-pulse width modulation mode. Through calculation and experimental verification, it is shown that the modulation mode used in this paper can realize the suppression of specific subharmonics.
An optimized energy management strategy for fuel cell hybrid vehicles
Authors: Xiao Wenxin , Wang Lei , Liu Dongyin , Zhang Wenwen 
Published: October 2019

Abstract
Fuel cell hybrid vehicles are environmentally friendly and have good development prospects. Their energy management is very important, but there are currently few studies on this topic. In this paper, an optimized energy management strategy specifically applied to fuel cell hybrid vehicles is proposed. Fuel cell hybrid vehicles have some different characteristics from ordinary hybrid vehicles, which need to be considered in energy management. For the fuel cell to remain activated during driving, its output power must remain above a minimum power. In addition, it takes some time for the fuel cell to start up. These characteristics are considered in the vehicle model. The energy management strategy proposed in this paper maximizes energy use efficiency by controlling the SOC value of the battery. The SOC value of the battery is in the proper range during driving. At high speeds, fuel is consumed as a source of energy and the battery is charged to keep its SOC at a high level. When approaching the destination or when the vehicle is traveling at a low speed, the battery is discharged to reduce fuel consumption. Applying this strategy to the ECE-15 and EUDCL environments, the simulation results show that this optimized energy management strategy improves the energy efficiency of the fuel cell and enables the battery to operate at the appropriate power.
Rural area government purchases “safe drinking water project” obstruction and sustainable planning
Authors: Zhou Xiaoming 
Published: October 2019

Abstract
When we open the webpage to search for “China Water Resources”, we can see such a data: China’s total freshwater resources account for 6% of the world’s total freshwater resources, and its per capita possession is only 2,400 cubic meters, which is 13 poverty-stricken waters worldwide. One of the countries. China is a country with extremely scarce water resources. Water has always been one of the important factors in urban and rural construction. With the rapid development of the national economy, the shortage of water resources has increasingly become a problem. In 2002, China launched a large-scale South-to-North Water Transfer Project, which solved the water problem of more than 400 million urban populations, and the urban water use plan has become more perfect. The “Guiding Opinions on Improving the Living Environment of Rural Areas” (2014) pointed out that by 2020, the basic conditions of rural housing, drinking water and travel in the country have improved significantly, and the problem of safe drinking water in rural areas has gradually entered the public management line of sight. However, in rural areas, especially in remote mountainous areas, lack of water resources, scattered living, and limited infrastructure construction funds, it is not only difficult to achieve centralized water supply, but also trigger a series of grassroots disputes. It is hoped that by analyzing the implementation effect of the “safe drinking water project”, exploring the difficulties and obstructions of rural water resources development, in-depth “anatomy” of the problem, clarifying the “pathogenic source”, in order to solve the problem, and strive to reduce ecological damage on the basis of sustainable development. Rationally plan and use water resources to achieve smooth progress in rural safe drinking water projects.
From the Perspective of Investment Efficiency to See the Risk Management in Electric Power Industry
Authors: Chen Jieyun 
Published: October 2019

Abstract
With the continuous electrification of the global economy, the electric power industry has attracted the largest amount of energy investment in the world for two consecutive years. Under the background of the current new normal economy, the role of electric power resources in the national economic and social life is becoming more and more important. Therefore, this paper studies the investment efficiency of electric power industry, it is concluded that the inefficient investment in electric power industry is common in China at present, which is accompanied by the excessive power of management and excessive government intervention. Based on this, some suggestions are put forward to improve the enterprise’s inefficient investment behavior through risk management.
Giant magneto resistance for CuCoNi granular films prepared by electrode position
Authors: Yu Zhang 
Published: October 2019

Abstract
CuCoNi granular films were prepared by electrodeposition, and the magnetoresistance were measured. The results show that the content of Ni is favorable for separation of more magnetic particles in the films. More Ni addition would decrease the concentration of magnetic particles. XRD analysis showed that the addition of Ni is in favor of magnetic particles of layer depositing. Excessive Ni added in the film but reduced concentration of magnetic particles. The layer complete phase separation after 600 °C annealing, corresponding to the copper diffraction peak intensity reaches the maximum; There is a clear satellite peaks at the between Co and Ni diffraction peak. Vacuum annealing make superparamagnetic particles into ferromagnetic particles, improve the coercivity. The GMR results show that 450 °C heat treatment to achieve the best film structure, with a maximum GMR, higher temperatures will form a ternary alloy phase in making the film, the GMR value is the lower.
The Role of DC Component and Trend Term in FFT Transform Spectrum Analysis
Authors: Gao Yunqi , Zhang Jiaqi , Li Zhuo , Wang Jiahui , Li Xiaohang 
Published: October 2019

Abstract
Most of the actual signals are analyzed and processed with zero spectral line values. This paper describes the causes of this phenomenon and the solutions. Through the analysis of a group of specific experimental data, the N-point FFT transform is carried out. By observing the original data and the frequency-shifted spectrum, the original can be intuitively understood. The signal has strong DC component and trend term (trend term is also divided into linear trend term and polynomial trend term). Because of this, the frequency spectrum obtained by FFT is mostly zero. In this paper, the DC component of the signal is calculated and the trend term is eliminated by using the digital signal processing function of MATLAB, and the whole spectrum is obtained. Finally, the specific area is selected according to the actual requirements. The spectrum analysis was carried out to obtain the qualified spectrum.
Research on Ordos Model Based on Sustainable Development Perspective
Authors: Cao Tingting , Li Juan , Xu Yan 
Published: October 2019

Abstract
In order to achieve the sustainable development of the region, aiming at the ecological degradation characteristics of the soil matrix and climate control in the Ordos Plateau and the ecological environment caused by the single model. This paper analyzes the ecological degradation characteristics of the regional ecosystem, the restoration of different degraded vegetation, the soil complex Erosion management technology, regional ecological security technology,regional eco-industrial development and reconstruction of human settlements in five areas to carry out sustainable development model for the implementation of the model to provide theoretical and technical research ideas, and strive to weaken the local ecological degradation rate, Promote the adjustment of local industrial structure, enhance the local green economy development rate, accelerate social development and ecological civilization construction.