bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on the Spatial and Temporal Changes of Ecological Land in Lanzhou New District
Authors: Wang Renci , Zhang Xiaoping 
Published: March 2021

Abstract
Based on the land use vector data interpreted by remote sensing and using mathematical statistics, we analyzed the quantity and spatial change characteristics of ecological land in Lanzhou New District from 2013 to 2018. We found that in the five years of rapid urbanization in Lanzhou New District, arable land and grassland have been decreasing, and the area of woodland, garden and waters has increased. The total area of ecological land has continued to decline. From 2013 to 2018, the absolute value of a single land use dynamic degree is garden >waters>woodland>arable land>grassland. The temporal and spatial changes of ecological land in Lanzhou New District are affected by many factors such as natural and social factors. Due to its special strategic positioning in China, we believe that policy factors among social factors have become the main driving force for its development and changes.
Research on Rural Land Consolidation Under the Background of Beautiful Countryside Construction
Authors: Xiong Yufei , Dong Qiguang 
Published: March 2021

Abstract
The continuous development of the city brings the imbalance between urban and rural development, in order to promote rural development, the construction of beautiful countryside, this paper combined with the background of urban and rural development, the rural land consolidation was discussed, and put forward effective measures, hope to be able to provide reference for the long-term development of rural areas.
Application of Industrial Solid Waste in Preparation of Recycled Concrete: A Review
Authors: Zhang Yichao , Li Yuqing , Zhou Jinghai , Huang Jian , Wang Qinghe 
Published: March 2021

Abstract
In recent years, the increasing construction waste and industrial waste has brought great pressure to the environment, and finding a reasonable disposal method has become an important problem to be solved. Using recycled concrete as a new building material can not only protect the environment and achieve sustainable development, but also save construction costs. The large-scale use of recycled concrete will bring significant economic, social and environmental benefits, which is in line with the concept of green and sustainable development. This paper focuses on the feasibility research results on the application of recycled concrete as building materials and industrial solid waste in recycled concrete, and prospects the future development trend.
Two-stage optimization study on location and layout of emergency resources in chemical parks
Authors: Li Dandan , Hou Hanping , Yang Jianliang 
Published: March 2021

Abstract
This paper intends to study the layout of emergency centers in the chemical park in two stages. First, a multi-agent collaborative location model is established to find out the sites of emergency centers. Second, DEA method is adopted to evaluate the efficiency of the existing reserve structure of each center, along with the optimization suggestions for the inefficient center. Finally, the safety system of the chemical park is improved by the combination of the location model and the DEA.
Study on the Carrying Capacity of Coal Goaf Based on Numerical Simulation
Authors: Zhang Feng , Jia Chao , Xu Shuming , Zhang Jianpei , Dong Ruirui , Wang Cong 
Published: March 2021

Abstract
The stability of goaf surface is a key problem hindering the exploitation and utilization of goaf surface. By reproducing the process of goaf formation, the stability law of goaf is explored, and then the concept of load transfer depth is proposed [1], so as to obtain the method of calculating the surface carrying capacity of goaf, providing certain reference for the development and utilization of surface land resources in goaf in China.
Distribution Characteristics of Geological Disasters and Main Control Measures in Shandong Province
Authors: Lv Lansong , Yu Dejie 
Published: March 2021

Abstract
The landforms and geological structures in Shandong Province are relatively complex, and the complex topographical conditions and geological structures have caused a series of geological problems. This article outlines the main types of geological disasters in Shandong Province through literature research and geological survey, summarizes the distribution characteristics and causes of different types of geological disasters in Shandong Province, describes the prevention and control status of various geological disasters, and proposes future research recommendations on geological disaster management. Through the analysis and data compilation of a large number of geological disaster cases in Shandong Province, the research results show that the hidden dangers of geological disasters in Shandong Province are mainly subsidence, landslides, debris flows and ground subsidence, which are mainly distributed in the eastern, southern and central parts of Shandong Province. Its development law is closely related to the topography, stratum lithology, and geological structure, engineering geological characteristics, hydrogeological characteristics and human-made engineering activities of the study area. Existing geological disaster control measures focus on eliminating hidden dangers, but the results of environmental management are few. Therefore, in the future, efforts should be made to research on geological disaster prevention and control engineering based on ecological protection and form ecological management that combines management engineering with natural and human engineering technology. This article aims to systematically introduce the major geological disasters and their distribution characteristics in Shandong Province, make up for the lack of existing research results, and provide a scientific basis for future research on geological disasters.
Research on Landscape Architecture Design Based on Ecological Restoration and Sustainable Utilization
Authors: Zhou Lisha 
Published: March 2021

Abstract
Under the guidance of low-carbon environmental protection thinking, people create low-cost landscape design works through green and healthy design ideas, which will help promote sustainable development from a practical level. Based on the analysis of the relationship between landscape ecology and land, this thesis explores the environmental sustainability of landscape ecology, such as landscape structure and function theory, ecological integrity and spatial heterogeneity, hierarchical scale theory, landscape change and stability theory, etc. Use the interpretation of connotation. Then the macro landscape ecology is introduced into the relatively micro landscape design to further enrich the design concept of modern landscape to meet the new requirements of landscape design development in the new era.
The Stress Analysis of Buried Nature Gas Pipeline in Abrupt Slopes
Authors: Liang Jinqiang , Su Hongli , Sun Shiping , Li Xue 
Published: March 2021

Abstract
The landform of the buried long-distance pipeline is complex and variable, especially in case of mountainous areas, the forces acting on the pipeline is not uniform. We make a calculation on how the gravity of pipeline and fluid in pipeline affects the stress in the bend connected to the front end of the pipeline, and make an analysis of how pipeline parameters and soil parameters affects the stress. We make a stress calculation on the bend with the method of the elastic bending method, and make an analysis of how diameter, thickness of pipeline and angle of slope affect the result of the calculation.
The Analysis of the Test for English Vocabulary Learning Strategies under Relativism
Authors: Wang Suxi , Hu Huiping 
Published: March 2021

Abstract
English words are the foundation and necessary prerequisites for English learning. The amount of English vocabulary that students memorized and mastered directly affects students’ ability to use language such as listening, speaking, reading and writing. The author tried to seek out the ways and strategies which help English learners to mater vocabularies from the point of words relativism. To carry out the process of the research, the author adopted sample surveys, interviews, and word tests to investigate individuals or team-work vocabulary learning. From the result of word tests, the team-work vocabulary learning is superior to that of individuals’. Thus, the author concentrates on analyzing the outer connection of words in the context network, and finds effective ways to establish word exogenous connections. Meanwhile, the inner elements that affect vocabulary learning is equally important, including brain science, learning science, semantic network.
Research on the Correlation between Injection and Production Speed and Casing Loss Trend
Authors: Cao Jinfeng 
Published: March 2021

Abstract
When the oilfield enters the late stage of ultra-high water cut development, the number of wells with casing damage is increasing, which leads to the imperfect injection-production relationship, makes it difficult to effectively use geological reserves, and makes the treatment and repair of casing damaged wells difficult, long in cycle and high in cost, which seriously affects the oilfield development effect and economic benefits. There are many factors leading to casing damage, and injection-production rate, as an important development data, affects various production indexes of oilfield and casing damage rate. Based on the statistical analysis of the injection production rate and casing damage rate in the past 15 years, this paper summarizes the related laws between them and the number of casing damage wells, time distribution, change trend, etc., studies the inter area range of water injection speed and injection production speed difference when casing damage occurs with high probability by well spacing, and formulates reasonable limits of water injection speed and injection production speed difference, so as to provide reference for the benign development of oilfield For reference.
Stability analysis and improvement of coastal soft soil foundation
Authors: Wang Junyi 
Published: March 2021

Abstract
In the construction process of coastal buildings, how to improve the stability of the soft soil foundation of coastal buildings so as to increase its service life is always a problem that needs to be paid attention to and solved in the construction process. In Qingdao sea beach, for example, according to the force of the foundation, the foundation of the wave force and tidal forces modeling analysis, and puts it into the fluid - sand erosion simulation model, the soft foundation in the best shape of certain external environment, slow down the erosion of various kinds of flow strength of foundation. Finally, we conduct sensitivity analysis and conclude that our model has good stability.
Application Research of 5G Network in Coal Mine Communication Field
Authors: Long Ma 
Published: March 2021

Abstract
The mine-used 5G hybrid networking wireless system mainly uses 4G technology to provide voice calls, and 5G technology mainly provides high-definition video analysis, big data transmission and remote wireless control services. In this paper, the mine 5G mobile communication network is mainly composed of ground core network (CN), IP RAN ring network, baseband control unit (BBU), remote data convergence unit (RHUB), micro radio remote unit (pRRU) and other systems, and the application research scheme of 5G network in the field of coal mine communication is expounded, which can also be tailored according to the specific needs of professional users.
A Study of Fracture Penetration Law of Tight Sandstone Gas Reservoir in Block LX
Authors: Li Yu , Yang Shengwen , Zhang Liang , Yao Fengsheng 
Published: March 2021

Abstract
The fracture of tight sandstone gas reservoir in Block LX is characterized by thick sand body and thin gas layer. The production layer is adjacent to water layer and coal fracture, and the longitudinal stress difference of the shielding layer is small. Based on the theory of fracture tip stress intensity factor, this paper adopts core experiment and theoretical analysis method, combined with fracturing engineering geological characteristics and construction parameters, to analyze the fracture penetration criterion and study the influence of construction factors and reservoir geological characteristics on the law of fracture penetration law. The results show that the minimum horizontal principal stress difference of artificial fracture passing through the interlayer is affected by the construction displacement, reservoir thickness and other factors; The construction displacement has obvious influence on the minimum horizontal principal stress when the artificial fractures pass through the interlayer, and the construction with small displacement can prevent the artificial fractures from passing through the interlayer when the stress difference of the reservoir interlayer is less than 3.5MPa. The minimum horizontal principal stress difference of the reservoir layer when the artificial fracture extends to the interface of he reservoir layer can be determined by using the criterion of the artificial fracture behavior and the model of the artificial fracture behavior, which will provide some technical guidance for the field hydraulic fracturing construction.
Research on Development Strategy Based on Financial Analysis of Listed Companies-Take Gree Electric as an example
Authors: Wang Yuanqi 
Published: March 2021

Abstract
With the development of the market economy, financial statement analysis is playing an increasingly important role for business managers, investors and various social stakeholders. The financial statements of an enterprise can not only reflect the cash flow of an enterprise, but also reflect the enterprise’s operating results and specific development strategies. Therefore, using quantitative research methods, this paper compares some financial indicators between the Gree Electric and its main competitors. The results show that Gree must make up the gap in product innovation in order to maintain its leading position in the industry. The study of financial statements is of great value. In addition to mining corporate strategies, it can also provide suggestions for the development of the industry.
Research on the valuation of City Enterprises Based on ARIMA series prediction
Authors: Zhang Siqi , Dai Yifan , Wang Xuan 
Published: March 2021

Abstract
This paper studies the valuation of listed companies on the science and technology innovation board. By establishing the corresponding mathematical model, comparing the stock market valuation level of China and the United States, through multiple data screening and analysis, using factor analysis of variance, time series model and RBF neural network analysis, the paper establishes the valuation and quantitative model of China’s stock market. AR. Regression analysis can accurately measure the correlation between each factor and improve the accuracy of the prediction method. Neural network has very strong nonlinear fitting ability, can map any complex nonlinear relationship, and the learning rules are simple, which is convenient for calculation and simulation. In order to quantitatively analyze the relationship between each factor and the valuation index, the significance test value of the Sino US market can be obtained by using the method of one-way ANOVA, and the ranking of the importance of each factor to the valuation index can be obtained through the analysis. The fundamental index and liquidity index of stock market have certain stability. In order to forecast and analyze the fundamental index and liquidity index of Chinese market and American market, the time series model is used to establish the prediction model for the change of index data.
Research on the Financial Shared Service Center in the “Internet +" Era
Authors: Liu Yanling 
Published: March 2021

Abstract
At this stage, with our country’s social and economic development, market competition is becoming increasingly fierce. How to maintain its own healthy and stable development in the fierce market competition has become a major challenge facing modern enterprises. At present, with the advent of the “Internet+" era, Internet technology has gradually been popularized and promoted, and the application environment is becoming more and more mature. Information management of corporate finance has become an inevitable requirement for the development of the times. Financial sharing in the “Internet+" era is conducive to promoting the implementation of information management of corporate finance, and thus better promoting the optimization and upgrading of corporate accounting work, and maintaining the healthy and long-term development of enterprises.
A Novel Web Service Discovery Method Combining Semantic Interface Similarity and Context Similarity
Authors: Lu Chenghua 
Published: March 2021

Abstract
Web service discovery is to find the most relevant services to satisfy the requester queries by means of similarity matching between Web services and a service requirement. We propose a novel Web service discovery method based on semantic similarity measure combing I/O similarity and context similarity. A new similarity measurement between terms is put forward as the basis of Web service similarity. Similarity between terms is represented by the similarity of two concepts containing them, and is calculated by means of the length of the shortest path between two concepts. Three kinds of linked relations are considered, i.e. ISA, HASA and antonymy relations. The experiments demonstrate that the proposed approach can improve the accuracy of concept similarity measure. Service discovery based on the similarity measure has better query performance than previous discovery methods in the precision, recall and F-measure.
Channel Fingerprint Packet Authentication Method Based on Edge Computing Cooperation
Authors: Xu Aidong , Zhang Tengyue , Yang Qicong , Jiang Yixin , Zhang Yunan 
Published: March 2021

Abstract
With the emergence of various low-latency application scenarios in the Internet of things (IoT), edge computing provides a series of low-latency computing modes such as real-time data processing and real-time decision-making, supports multiple terminals, and solves the problems of the existing cloud computing architecture. This paper proposes a channel fingerprint data packet authentication method based on edge computing cooperation. The edge server and smart terminal perform cooperative computing, make full use of the computing power of the smart terminal, reasonably allocate the amount of computing tasks, and effectively realize lightweight data packet authentication. The task running time is shortened and the authentication efficiency is improved.
Reform and Practice of Web Design and Production based on OBE Concept in the Context of New Engineering
Authors: Guo En , Xu Weizhi , Yu Hui , Zhong Yujie 
Published: March 2021

Abstract
In this paper, based on the characteristics of web design and facture course, from the course introduction, teaching existence question analysis, training mode reform aspects and so on three aspects to illustrate how to improve the teaching effect of this course, and to explore the concept of how to use the OBE complete curriculum reform in teaching practice, thus improve the computer professional and visual communication professional social practice ability of students, in order to conform to the demand of the current web design position.
Design of BearPi-Based Waste Bin With the Functions of Speech-Controlled Classification and Locating
Authors: Xiong Yuxiang , Shen Jie , Zhou Tianhong 
Published: March 2021

Abstract
To solve the current problems of waste classification and littering, this kind of BearPi-based waste bin with the functions of speech-controlled classification and locating is invented using the technologies of speech recognition and GPS. The device, with BearPi as its core element, uses solar panels and lithium batteries as power supply, IIC and serial interfaces for the respective control of PCA9685 steering gear driving board, an M5310_A communication module, ATGM332D locating module and SX-ASR-B speech recognition module, and finally, a GPIO and timer for the operation of the HC-SR04 module and an E18-D80NK photoelectric sensor. The devices could classify the waste through speech recognition or leave it for the users. Furthermore, it could detect the remaining capacity and location of the waste bins through the modules and update the cloud data for the users’ convenience in finding and using.
Study on the Effect of Different Starting Conditions on the Load of Freight Ropeway Working-rope
Authors: Ge Zhaojun , Li Ming , Qin Jian , Qiao Liang 
Published: March 2021

Abstract
In order to study the structural performance of freight ropeway under the influence of dynamic factors, a method for dynamic analysis and calculation of freight ropeway is proposed. Based on the theory of finite particle method, this method gives the expressions of the interaction force between the carrying rope and running trolley, and the haulage rope and running trolley. The motion equations of the particle of the carrying rope, traction rope and running trolley are established respectively, and the coupling force calculation of the carrying rope and traction rope is realized. The influence of load quality, starting speed and starting position on the tension of working-rope of freight ropeway is analysed with the proposed calculation method, which can provide more scientific and reasonable reference for the design of freight ropeway.
Research on Real-time Tree Barrier Measurement System Based on Three Dimensional Lidar
Authors: Zhang Ying , Liao Ruchao , Chen Yun , Yuan Xinxing , Kang Taizhong 
Published: March 2021

Abstract
Removing dangerous tree barrier is an important condition to ensure the safe operation of transmission line. A tree barrier measurement technology based on Unmanned Aerial Vehicle (UAV) is proposed in this paper. The technology detects the tree barrier near the transmission line by carrying Three Dimensional (3D) Lidar and on-board computer, de-noises the data obtained during the scanning process, aggregates and classifies the tree barrier data model. Combined with tree barrier measurement algorithm, a real-time tree barrier measurement system and method are formed. Field experiments show that the system can effectively improve the accuracy and efficiency of traverse tree barrier measurement, which is conducive to the realization of information, intelligence and safety of transmission line inspection, and has practical application value for the safe operation of the line.
Spatial-Temporal Characteristics of UK—Commonwealth of Nations’ Trade and its Impact on the UK’s Economic Growth
Authors: Liu Shuguang , Xu Yujie , Shang Yingshi , Wang Jiayi 
Published: March 2021

Abstract
This paper analyzes the trade between the UK and Commonwealth of nations from the perspective of time and space .We use a detailed trade data to analyze the volume and structural change of trade in the 21st century, the findings show that the trade volume of goods between the UK and the Commonwealth is only 8.27% of the UK’s total foreign trade of goods, the degree of closeness and dependence of trade show a decreasing trend, and the bilateral trade shows significant spatial differences. Then we use vector auto-regressive model to analyze the impact of the UK’s trade with the Commonwealth on its economy and there exists a long-term stable trend. Trade shock has a positive effect on the UK’s economic growth.