bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on the Model of Regional Circular Economics Based on Computer Modelling
Authors: Gu Yajun , Chen Can 
Published: March 2021

Abstract
This thesis takes the geographical area resource coverage as an example and uses computer theory to model circular economics. The thesis establishes a multi-objective regional economic resource optimization allocation model, uses MATLAB language to write programs, and obtains the results of resource optimization allocation based on the results of resource supply and demand forecast analysis. Finally, the paper analyses the results of resource optimization allocation, and realizes the coordinated development of society, economy and environment based on sustainable development.
Study on the Effect of Mineral Powder and Fly Ash on Cement Hydration Heat
Authors: Li Geli , Fang Yunhui , Shao Youzhe , Wu Chuandeng , Guo Yuanqiang , Ma Xiuxing 
Published: March 2021

Abstract
In this paper, the hydration heat and hydration temperature-time curves of different proportions of cement, fly ash, mineral power, and fly ash and mineral power at different ages were studied. The results showed that compared with cement alone, fly ash and the heat of hydration of cement at different ages had been reduced, and the maximum temperature had been reduced to varying degrees. The maximum temperature time had been advanced compared to cement, and the reduction of the hydration heat of cement by pulverized coal was higher than that of pulverized coal. Ash reduced the heat of cement hydration. When cement was replaced by fly ash and mineral power in different proportions, the heat of hydration was also reduced, but the reduction was disproportionate. As the blending ratio increased, the degree of hydration of the cement decreased and the maximum temperature decreased. The reduction of hydration heat of fly ash was better than the end of the initial period, but the reduction of heat of hydration by mineral powder was not very obvious, but it can slow down the heat release rate of hydration heat significantly.
A Method of Classifying Oilfield Benefit and Application
Authors: Zhou Qing 
Published: March 2021

Abstract
Benefit classification analysis is an important content for not only studying the benefit categories of different blocks in Oilfield, but also controlling and adjusting the negative benefit blocks. Due to the lack of comprehensive consideration of development stage and geological conditions, the classification of oil field development units has some limitations. Through comprehensive analysis of the influencing factors of oilfield development benefit, this paper classifies unit development by using system clustering method. DEA (Data Envelopment Analysis) model is used to analyze the relative validity of different development units. In the same geological and development condition units, the method of benefit classification based on validity analysis is used to realize the comprehensive classification of development and economy. Benefit classification analysis using the benefit evaluation data of a low permeability development unit in eastern oilfield shows that it can play a guiding role in benefit classification, negative effect management and operation strategy of the development unit.
Study on characteristics of the sediment release in Chaohu Lake
Authors: Wu Junwei , Zhong Xianjin , Yang Lingling 
Published: March 2021

Abstract
Through the indoor static simulation test on the nitrogen and phosphorus released characteristics of the sediment in Chaohu Lake, the released characteristics of TN and TP in the sediment of Chaohu Lake under different conditions such as different temperatures, different pH values and the disturbance of overlying water and whether the aquatic plants were planted on the sediment were analyzed or not. The results show that, it is beneficial to the release of sediment contaminants with increasing temperature. When pH is neutral, which is not adverse to the release of sediment pollutant, while disturbing overlying water can accelerate the release of pollutant in the sediment, and the effect of eliminating the water body TN is obvious, but the effect of eliminating the water body TP is not obvious.When we plate the aquatic plants, it is good for the release of pollutant in sediment and the improvement of water quality,This can provide a theoretical basis for the control of sediment pollution in Chaohu Lake through the above test.
Research on the Electrical Resistivity Characteristics of Statue Remolded Soil
Authors: Qiu Liping , Yang Yaogui , Ma Linyan , Qiao Jiawei 
Published: March 2021

Abstract
In order to study the electrical resistivity characteristics of the statue remodeled soil and make it play a role in the theory and related engineering applications, the electrical resistivity measurement of the statue remodeled soil was carried out using the a two-electrode method.This paper analyzes the law and characteristics between the electrical resistivity of the coarse and fine mud layers of the statue and the water content and dry density, and establishes the empirical model of the electrical resistivity of the coarse and fine mud layers.The measurement indicate that the electrical resistivity of the coarse and fine mud layers of the remodeled soil of the statue shows a power function decrease with the increase of mass water content, and with the increase of dry density.And under the conditions of the same mass water content and dry density, the electrical resistivity of the coarse mud layer is always lower than that of the fine mud layer.Based on the experimental results, the electrical resistivity model of the coarse and fine mud layers of the statue remodeled soil and the relationship model between the electrical resistivity of the earthen plaster of statue and the mass water content are proposed. This will provide reference for the non-destructive testing of the moisture content of the precious cultural relics of the statue and the engineering research and practical engineering application of similar materials such as the reinforced soil slope protection, retaining wall and foundation, etc.
Traditional funeral culture and modern green ecological funeral construction
Authors: He Zhang , Wang Yongkuo , Hu Daoqing , Wang Yingchao 
Published: March 2021

Abstract
Modern green ecological funeral is a sign of the progress of human civilization, the development direction of China’s funeral industry, and the only way of funeral transformation. In China, although the construction of modern green ecological funeral has made some achievements, there are still some problems. We need to strengthen publicity, create strong conditions, further improve the system, and gather the strength of the government, industry and the public to promote the vigorous development of China’s modern green ecological funeral construction.
Research and application of logging technology for annulus fluid production profile in highly deviated wells
Authors: Pan Hongbo 
Published: March 2021

Abstract
In view of the low success rate of logging in annulus fluid production profile in domestic oil fields, the relationship between instrument string and well deviation is carried out Requirements of downhole instruments for annular testing construction in highly deviated wells; The lifting and lowering technology of well entry instruments in highly deviated wells has been systematically studied. After field application, the logging technology has been updated and improved. By using large diameter cable, flexibly connecting and splitting instruments, reducing the outer diameter of instruments, configuring automatic direction finder, enhancing the umbrella collecting strength and other improvements in technology and construction methods, the problem of difficulty in measuring the logging data of liquid production profile in the annulus of highly inclined pumping wells is well solved, and the demand of dynamic monitoring of highly inclined wells in oil fields is met.
Application of the Borehole Shear Test to Loess Slope
Authors: Huang Xiaowei , Yu Yongtang , Zhu Jianmin , Zeng Tao , Zheng Jianguo 
Published: March 2021

Abstract
It is a fundamental and important task to accurately determine the shear strength parameters of soil in the engineering design of slopes. In this study, an in-situ test method called Borehole Shear Test (BST) was applied for the first time to obtain the shear strength parameters of loess slope. Based on the improved Iowa borehole shear instrument, this paper aims at proving the applicability of BST to loess slope, and revealing the testing principles and influencing factors of normal stress and consolidation time to BST. The results show that the normal stress is proportional to displacement, which indicates that the soil is elastic deformations stage. To ensure the reliability of the results, the time for consolidation under the first stage of normal stress should be greater than 10 min while in the subsequent steps, the consolidation time should be no less than 5 min. The shear stress-displacement curves have obvious peak values and exhibit a general strain-softening type. The shear strength parameters determined have good correlation overall and the corresponding correlation coefficient is greater than 0.98. In general, the borehole shear test shows a good performance on the determination of the shear strength parameters of loess, which provides valuable guidance for slope design and future study.
Application of integrated method of HAZOP-AHP and fuzzy comprehensive evaluation in coal mine gas explosion accident
Authors: Li Dan , Cao Qinggui , Wang Junqing , Mi Xin 
Published: March 2021

Abstract
Hazard and Operability analysis (HAZOP), analytic hierarchy process (AHP) and fuzzy comprehensive evaluation methods are all important safety evaluation methods. For HAZOP analysis, the subjectivity is strong, the analysis process is complex, and accurate quantitative analysis cannot be performed. Proposed a safety evaluation method that combines HAZOP, AHP and fuzzy comprehensive evaluation, and integrated the three methods to make the HAZOP analysis method from qualitative analysis to qualitative and quantitative analysis, and improve the accuracy of risk identification. Finally, taking the gas explosion accident as an example, the above method is used to briefly analyze the gas explosion accident to verify the scientificity and feasibility of the method.
New Bionic Tree Water and Soil Protection Device
Authors: Wang Zehao , Zhang Wenbo , Qiu Yukun , Cao Xuewei 
Published: March 2021

Abstract
In view of the existing soil erosion problems in China, a new bionic tree device is designed to solve the shortcomings of the existing tree planting control methods through the research and investigation of soil and water loss control by trees. In a short period of time, it can improve the soil loss and vegetation survival in the area prone to soil erosion by a new treatment method. Compared with the traditional way of afforestation, it has shorter treatment cycle and more convenient treatment method. Combined with natural trees, it can achieve better water and soil protection.
Analysis of stress state of transversely isotropic weak rock stratum
Authors: Zhe Li , Guangze Zhang , Enyu Chen 
Published: March 2021

Abstract
In geotechnical engineering excavation and design, in-situ stress field is a factor that engineers must consider. However, in practical engineering, the testing method of in-situ stress in weak rock stratum is not mature, and how to obtain the distribution of in-situ stress field in weak rock stratum efficiently and accurately has become a research hotspot. According to the in-situ stress test results of known rock strata, based on the principle of deformation coordination of adjacent rock strata, the stress state of rock strata which is difficult to carry out in-situ stress test is deduced. It is considered that considering the transverse isotropy of rock strata will greatly improve the prediction accuracy, which is verified by ABAQUS finite element model. The results show that the transverse isotropic model is far superior to the isotropic model in predicting the distribution of ground stress field in rock strata (shale, slate, etc.) with obvious anisotropy. However, the greater the ratio of elastic modulus between horizontal and vertical direction, the smaller the ratio of elastic modulus between horizontal and vertical direction, and the greater the difference between the predicted and measured rock stress states. The obtained conclusions are applied to the estimation of ground stress of Que Ge Ka fault in Litang Tunnel, sichuan-tibet railway, which provides sufficient theoretical basis for the classification of large deformation in the process of tunnel excavation and design.
Research on the Drop Hammer Impact Test System
Authors: Wang Zhiming , Liu Dongdong , Li Zhongsheng 
Published: March 2021

Abstract
The drop hammer impact test system adopts the multi-purpose and modular design to solve the four problems of the airbag door of automobile test instrument panel: the test conditions are generally inconsistent with the actual conditions; The secondary impact problem exists in the collision test. The experiment does not have the experimental data, cannot provide the technical question for the enterprise; There are some problems in the equipment construction mode, such as universality, repeatability and low utilization rate. The improvement of mechanical structure and control system makes the device simple in structure, powerful in function, able to obtain accurate experimental data, and able to realize the instrument panel airbag door detection of different vehicle models.
Risk Management of Urban Pipe Gallery Based on System Dynamics
Authors: Wang Zihao , Chen Xuedong 
Published: March 2021

Abstract
Under the background of continuous urbanization in China, urban underground comprehensive pipe gallery will become an inevitable trend of urban comprehensive management in the future. After the completion of the management gallery, how to effectively manage the risks in operation and maintenance management has become a topic at this stage. Based on the classic method of AHP combined with DSM method, and through a lot of literature research, to build the relationship between the risk of an integrated pipe rack system, and has carried on the system dynamics simulation using Anylogic software, finally, the simulation results obtained a few of comprehensive pipe gallery has the greatest effect in the overall risk of several risk paths, convenient operational phase in the pipe gallery risk in the future, you can draw on the results of several path for more effective management.
Study on Forming Theory of Inner Strong & Outer Weak Strong Bi-metal Pipe
Authors: Fan Xianyong , Wang Xuesheng , Zhai Shikuan , Chen Qingzhu , Yu Jingjiang 
Published: March 2021

Abstract
As a new type of pipe, bimetallic composite pipe is widely used in various industries in the chemical industry, because its internal and external tubes use different metals, so it can cope with a variety of different working conditions. At present, the application field of composite pipe is mostly inner strong and outer weak strong composite pipe, and this pipe has not been studied accordingly. In this paper, the theory of expansion of inner strong and outer weak strong composite pipe is derived, and a complete set of expansion methods and related parameter calculation formulas are obtained. Abaqus, a finite meta-analysis software, is used to simulate the expansion process and compare it with the theoretical results. The comparative results show that the theoretical formula obtained by derivation has a high degree of credibility, and the results obtained by using this set of theories are close to the results of computer simulation and can be used in industrial production.
Research on False Data Injection Attack in Smart Grid
Authors: Xu Aidong , Zhang Tengyue , Chen Liang , Li Qing , Zhang Yunan , Lin Haojie , Wang Peiyao , Wu Sihui , Zhao Runhui , Jiang Yixin 
Published: March 2021

Abstract
The concealed false data injection (FDI) attack in the smart grid can successfully pass the power system state estimation commonly used in the residual bad data test without being detected by the existing algorithms, resulting in the state estimation error of the control center and disturbing the normal operation of the power system. In this paper, false data injection attack and attack detection are carried out in the actual power edge security protection system, microgrid control system and intelligent energy security protection system. Among them, the false data attack part simulates the attack of the voltage phase angle, and compares it with the ordinary attack method, and demonstrates the success of these attacks in the actual power grid system.
The Application of PAD Teaching Method in Computer Network Course
Authors: Liu Lining , Zhang Yongsheng , Zhang Penglong , Sun Wenqian 
Published: March 2021

Abstract
As a new teaching mode and method, PAD has been developed in recent years. This teaching mode has been applied in the teaching of universities, ordinary primary and secondary schools and vocational colleges. It has achieved good teaching results. In order to improve teaching effect, improve the students’ autonomy and enthusiasm and cultivate the independent innovative talents needed by the society, more and more computer teachers have also begun to apply PAD to the computer classroom. “Computer Network” is a basic and compulsory course for learning computers. “transmission media” in this course is selected as the specific content, and PAD is used for teaching design.
Study on Capacity Improvement of Close Range Dual Runway of Shuangliu Airport under New Wake Classification Standard (RECAT)
Authors: Pan Weijun , Zhang Hengheng , Yin Haoran , Wu Tianyi , Yin Zirui 
Published: March 2021

Abstract
With the increasing number of flights, the gap between the front and rear aircrafts is gradually reduced. The wake separation becomes one of the important factors restricting the reduction of aircraft separation, which results in the runway occupation time can not be further reduced, and the runway capacity is also restricted to a certain extent. In recent years, the wake reclassification (Recat) promoted by FAA has been applied to runway capacity the increase has played a positive role.
In this paper, the capacity of Chengdu Shuangliu International Airport is studied, and the capacity models of approach runway and departure runway are established respectively. According to the relevant characteristics of Chengdu Shuangliu International Airport, the runway capacity model under one landing operation mode is established, and the runway capacity is calculated by using MATLAB software with reference to the new American wake classification standard (Recat). Finally, it is concluded that under the condition of introducing Recat, the capacity of Chengdu Shuangliu International Airport can be increased by 12.3% in theory.
Design and Implementation of a High-precision Campus Intelligent Blackboard Inspection System Based on AI
Authors: Li Nengneng , Xu Xiwei , Wang Rong , Liu Xiaoyang 
Published: March 2021

Abstract
At present, traditional campus smart blackboard detection generally uses manual detection as the main method and equipment detection as the auxiliary method to determine the fault information encountered, and it is still limited to relying on the experience of the campus smart blackboard management and maintenance personnel to judge the fault. Solve the problem. In this paper, aiming at the problems of low efficiency of traditional campus blackboard detection technology, high manual detection cost, and low classroom enthusiasm due to untimely detection, this paper proposes a campus intelligent blackboard monitoring system based on AI technology, and establishes a chain-type intelligent classroom education system. Smart classroom does not affect the development of social education level because of some disadvantages brought about by technological development.
The Design of Smart Car Based on Android Client
Authors: Tang Lili , Huang Wei , Guo Linhai 
Published: March 2021

Abstract
This design is based on the open source Android version 8.0 system to develop the mobile phone platform client, using the eclipse integrated development environment to research and develop Bluetooth control. The remote control of the car is realized by Bluetooth technology, gravity sensor and voice. The design is mainly composed of hardware system and software system. It can realize the car’s forward, backward, rear left turn, rear right turn, front left turn, front right turn and other functions. This design scheme provides a new solution for the design and implementation of wireless remote control vehicle, and also plays a certain reference role for the design of remote control smart home system in the future.
OAS Surface Optimization of Shuangliu Airport based on Collision Probability Calculation
Authors: Lian Jingyu , Chen Pengde , Wang Siyu , Wang Hao 
Published: March 2021

Abstract
Airport clearance safety management is an important part of airport operation indicators. Controlling obstacle height is one of the most important tasks in airport clearance management. The current program design and evaluation in China currently uses the obstacle restriction surface (ILS) and Obstacle Evaluation Surface (OAS). The current program design in our country rarely uses the collision risk mode (CRM), but the obstacles around the airport are gradually increasing. At this stage, the OAS surface is more conservative. A simplified model with a collision probability of approximately 1×10-7 is constructed and compared with the OAS surface to improve it. The results show that the slope of the original OAS surface is larger than that of the simplified model. The improved OAS surface meets the target safety level and solves the problem of being too conservative.
Research on the Spatial Differentiation of Soil Salinization in the north of the Yellow River in Jinan City
Authors: Liu Zhanhong , Dong Fang , Wang Xinyu 
Published: March 2021

Abstract
In this paper, Xiyan Village and Dongyan Village of Jiyang County, Jinan City were taken as the research areas to conduct research and analysis on the spatial distribution law of soil salinity in the spring of 2019. Spatial distribution of soil salt ions in different soil layers were drawn to research spatial distribution characteristics of soil ions. The results show that soil in the research areas was highly mineralized and the negative ions in the chemical components were mainly SO42- and Cl-. In the horizontal direction, the content of Mg2+ and Cl-in all layers all presented the trend of increasing gradually from northwest to southeast. The peak value of ion content occurred in the Midwest.
Research on Estimation of Blood Glucose Based on PPG and Deep Neural Networks
Authors: Deng Hanghang , Zhang Luqiao , Xie Yu , Mo Shasha 
Published: March 2021

Abstract
Diabetes is one of the three major chronic diseases in the world. At present, the number of diabetic patients in the world is increasing year by year, which has become one of the main threats to us. Therefore, it is very important to monitor blood glucose level. Clinically, blood glucose is measured by collecting fingertip blood, but this method has many disadvantages. In this paper, PPG signals are used to estimate BGL using deep neural networks (DNN). Finally, we found that the success rate of our DNN blood glucose estimation model reached 90.25%, and achieved good results. It provides a choice for the commercialization of noninvasive blood glucose detection technology.
Research on the New Development Mode of Metro TOD Based on Tourism Economy——Taking Shijiu Lake Scenic Area in Nanjing as an Example
Authors: Hu Haoxuan , Zhang Yuchen , He Naijun 
Published: March 2021

Abstract
Metro TOD plays an important role in the development of commercial economy and promotes the local industry and economy. Reasonable combination of Metro TOD and tourism economy will help to form a more diversified development model. This paper puts forward a new development mode of Nanjing Shijiu Lake Metro TOD.