bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on Moment of Inertia Measurement Method
Authors: Wang Yafei 
Published: September 2019

Abstract
A method for measuring the moment of inertia has been proposed. The dynamic model of stator current and load moment of inertia during the motor’s frequency speed control has been built. Research show that load moment of inertia and the max of stator current are submitting linear relationship, which means that moment of inertia can been calculated after the stator current during the motor’s frequency speed control has been measured. Finally, the linear relationship between the moment of inertia and the stator current has been proved with a series of experiment, therefore, the feasibility of the method has been validated. The method has a better repeatability while the repeatability error is 3%.However, by recalculating the experiment data with the math model, the result indicate that the maximum error is 39%.The main factors of the error are math model building error and the instrument uncertainty. In order to improve the precision of the moment of inertia measurement, research should be taken to build a more exact math model.
Simulation method of milling vibration based on cutting force segmentation model and Simulink
Authors: Li Hua , Du Weijie , Han Jianxin 
Published: September 2019

Abstract
Modeling and Simulation of vibration of cutting process is the main way to control milling chatter. In this paper, an integral model of cutting force for milling process with helical cutter considering the sectional characteristics of cutting force is established. Based on the model, the dynamic analysis module of thin-walled milling process including the judgment module, signal module and definite integration module is built by using Simulink of MATLAB, which. The module can realize fast simulation in different cutting parameters and tool geometry conditions. This research can provide important reference for simulation analysis of cutting process.
The threshold determination methods of water body information extraction using GF-1 satellite image
Authors: Ji R P , Yu W Y , Feng R , Wu J W , Zhang Y S 
Published: September 2019

Abstract
The GF-1 satellite is the first satellite of China High-resolution Earth Observation System (referred to short as CHEOS) with the advantages of high spatial resolution, high temporal resolution and 4 multi-spectral channels, which can quickly extract inland water body information. At present, the methods of water body information extraction by remote sensing mainly include single-band threshold method, spectral relation method, normalized difference vegetation index (NDVI) method, normalized difference water body index (NDWI) method and shade water body index (SWI) method. The results of water body information extraction will vary with different methods; especially, the thresholds determination of each method is an important factor in the accuracy of water body information extraction. In this paper, the water body information of Qinghai Lake, Hongze Lake, and Hulun Lake were extracted by NDWI index, and the optimal thresholds of water body information extraction were determined by using Jeffries-Matusita (J-M) distance method and density slice method was in the range of -0.061~0.093. Finally, the accuracy of the extraction results was analyzed, and the overall accuracy is more than 88%.
Application and Analysis of water ring vacuum pumps reform Based on Characteristic Curve
Authors: Feng Qiang Sheng , Chen Li Feng , Wang Xiao Huan , Le Yuan Nan , Zheng Jie 
Published: September 2019

Abstract
The operating efficiency of a vacuum pump is closely related to the characteristic curve and affected by the sealing water temperature of the vacuum pump. Tests have been put on the vacuum pump based on the analysis of the characteristic curve, and the circulating water system is reformed to control the temperature of the sealing water. The energy consumption of the equipment decreases, the operation stability improves, and the cost of the equipment is reduced. Furthermore, the benefits brought by the adjustment are verified through data analysis.
Engineering prevention and treatment of salt soil diseases caused by pulping on low-grade highways in xinjiang
Authors: Zheng Yu-Xin , Li Chun-Yan 
Published: September 2019

Abstract
The frost boiling disease caused by saline soil is a common disease of grade three and four highways at present. In this paper, the mechanism of frost boiling highway disease in saline soil is analyzed. And through simplified calculation combined with engineering experience, the concrete measures for preventing and curing the disease are put forward. Finally, through engineering practice verification, the expected results have been achieved.
The study on concession pricing mechanism of traditional village conservation projects based on PPP mode
Authors: Fang Jun , Chen Fei , Gong Jingyuan 
Published: September 2019

Abstract
Even though the introduction of PPP mode to the traditional village protection programs can make the private capital living and ease the government’s fiscal pressure, the direct contradiction between the interests of traditional village is an important factor influencing the successful implementation of the projects. The research on concession pricing mechanism of traditional village projects based on PPP mode aims to deal with the design of reasonable incentive mechanism and the establishment of the government compensation system, and coordinate the relationship among multiple stakeholders in PPP mode to ensure the smooth development of traditional village protection programs. Based on the above analysis, a model of traditional village protection PPP mode by the Multi-objective Planning could be built and according to the interests of participating subjects, the constraint conditions and priority ranking could be set. In the end of this paper, the solution of the franchising price interval was calculated by empirical analysis.
Research on the construction of village classification evaluation index system under the background of rural revitalization
Authors: Chen Haiting , Wang Zhiyuan 
Published: September 2019

Abstract

The Rural Revitalization Strategic Plan (2018-2022) clearly divides the villages into agglomeration and upgrading villages, characteristic protection villages, evacuation and relocation villages and suburban fusion villages. However, the current classification of villages is subjective and lacks scientific and rational quantitative evaluation. This paper attempts to construct the villages classification evaluation index system from six aspects, namely transportation location, population scale, land resources, economic development status, infrastructure and historical context by using AHP. Through an empirical research of 12 villages in Mayangshan township, Longhui county, it was found that there were 2 agglomeration and upgrading villages, 4 characteristic protection villages and 6 evacuation and relocation villages in Matangshan township. In the background of rural revitalization, the construction of village classification evaluation index system to scientifically determine the type of village is a useful exploration for improving the theory and practice of rural planning, which can provide reference for village layout planning.
Research on the factors affecting the choice of private capital in PPP projects of urban underground comprehensive pipe gallery
Authors: Gong Jingyuan 
Published: September 2019

Abstract
In the practice of PPP projects, many projects failed due to the inability of private capital to meet the objectives of construction and operation. Therefore, choosing the right private capital is the prerequisite for the success of the PPP project. This paper takes the urban underground comprehensive pipe gallery PPP project as the research object, and proposes five factors that affect the choice of private capital. Through the structural equation model (SEM), the structural model of the influencing factors of private capital selection is constructed, and the influence of each variable on private capital choice and the interaction between variables are analysed. According to the calculation results of the model, corresponding suggestions are put forward, which aims to save time and effort in the process of purchasing social capital, so as to achieve a win-win situation for both government and private capital.
Combination of the Chinese and Tibetan Architectural Languages——a Case Study of three Halls of Wusutuzhao in Inner Mongolia
Authors: Tuo Ya , Zhou Bo , Shang Dawei 
Published: September 2019

Abstract
In order to study the architectural style of Mongolian lamaist temple combining the han and Tibetan styles, this paper analyzes three main halls of the temple built in different periods in the same village.Secondly, the process of deformation and combination of spatial prototype is decomposed through illustration. The following conclusions are drawn: 1. The temple architecture of lamaism in Inner Mongolia flexibly utilizes the architectural vocabulary of the two language families on the premise of satisfying the architectural function and accurately expressing the religious connotation; 2.2. The two architectural languages use different spatial dominant principles to express similar spatial connotations and reflect the basic cognition of buddhist cosmology;3. With the improvement of the craftsman’s ability to master the two languages, the ways of integration of the two languages are always changing, and the manifestations of the palace are diversified.
Three-dimensional centrifuge modelling of the effects of tunnelling on vertical behaviour of pile group
Authors: Chen S. M. , Lu H. , Jiang H. J. , Peng S. Y. , Wong K. S. 
Published: September 2019

Abstract
In densely built urban cities, tunnels are likely to be constructed adjacent to existing deep foundations. Tunnelling activity inevitably induces soil stress changes and soil movements in the ground, which may affect nearby existing pile foundation. Although a number of studies have been carried out by various researchers to investigate tunnelling effects on piles, the three-dimensional effects of tunnelling on pile group have not been well-investigated and understood. In this paper, a three-dimensional centrifuge test was carried out to investigate the effects of tunnel construction on a pile group in dry sand. The diameter of each pile was designed as 0.8m (in prototype) and the diameter (D) of the simulated tunnel is 6.08m. Tunnel advancement was modelled in-flight by controlling a volume loss of 1.3%. The tunnelling process was divided into four stages to model the three-dimensional tunnelling effects. The closest distance between the tunnel and the pile group was 1.5m at the pile toe. Measured settlement of pile group, as well as axial force distribution of piles in the pile group are reported and discussed.
Damage location diagnosis of urban rail transit bridge based on vehicle-induced vibration responses
Authors: Liu Hao , Zuo Dongliang , Zhang Kun 
Published: September 2019

Abstract
For the urban rail transit bridges, vehicle load has obvious repeatability and regularity, and the vibration amplitude of the bridges under the vehicle action is much larger than that during the period of not being open to traffic, which is more conducive to the appearance of structural damage. This paper attempts to use vehicle-induced vibration responses to diagnose damages for urban rail transit bridges. Firstly, the vehicle-rail-bridge coupling finite element model was established based on the engineering background of a typical urban rail transit bridge. Then, through dynamic time history analysis, the vibration responses of bridge and vehicle before and after damage were obtained. Finally, the sensitivity to damage of acceleration responses from measuring points on both bridge and vehicle was compared, and a damage diagnosis method based on the difference of acceleration responses from different measuring points of bridge and vehicle structure was proposed. The results show that the difference of acceleration response between the measured points of bridge, wheelset and bogie before and after damage can be used to locate damage, and the vehicle-induced vibration data as a medium can provide a new way for rapid diagnosis of damage location for urban rail transit bridges.
Analysis of influence of adjacent side length of deep foundation pit on pit angle effect
Authors: Gao Xing , Wang Weiyu 
Published: September 2019

Abstract
As a three-dimensional system with length, width and depth, the foundation pit is bound to have a pit angle effect. At present, the study of the foundation pit angle effect focuses on the influence of the “deep” of the foundation pit, while ignoring the analysis of the “wide”. In this paper, the relationship between the length of the adjacent edge of the foundation pit and the foundation pit angle effect is analyzed by using the flac3d finite difference software. It is found that the ratio of the adjacent length to the depth does not change the functional relationship between the influence coefficient of the foundation pit angle effect and the ratio of the foundation pit angle distance to the foundation pit edge length. When the ratio of the length of the adjacent side to the depth of the foundation pit is less than or equal to 7, the influence coefficient of the foundation pit angle effect increases linearly with the ratio of the length of the adjacent side to the depth of the foundation pit. When the ratio of the length of the adjacent side to the depth of the foundation pit is more than 7, the influence coefficient of the foundation pit angle effect is a fixed constant. Finally, the rationality of the research results is verified by engineering examples.
Heat Analysis of Assembled Steel-truss Concrete Hollow Floor
Authors: Ju Hao-Xue , Zhang Yue , Xing Xu-Dong 
Published: September 2019

Abstract
The numerical analysis software ABAQUS has been used to study the temperature field of an assembled steel-truss concrete hollow floor in this paper to simulate the assembled steel-truss concrete hollow floor under thermal coupling under the ISO-834 standard heating curve. The distribution principle of temperature field for different sections in the floor system has been obtained to provide a reference for the study of the mechanical properties of assembled steel-truss concrete hollow floor.
Interpretation of the coseismic surface deformation of Wenchuan earthquake based on the theory of disclination and dislocation
Authors: Duan Hu-Rong , Yan Quan-Chao , Wu Shao-Yu , Kang Ming-Zhe 
Published: September 2019

Abstract
A combination model of disclination-dislocation which can describe the three-dimensional translational and rotational motion of the fault is given. We used the combined model and the dislocation model to calculate the coseismic horizontal displacement of 102 points of Wenchuan earthquake respectively. The result indicates that the horizontal displacements calculated by the two models are generally in agreement with the GPS observations both in magnitude and direction, but there are some differences in some points. When the magnitudes of horizontal displacements by the two models are close to each other, we calculate their direction residuals by taking the direction of the GPS observations as the true value. It is found that the directions residuals calculated by the two models are concentrated between [-20°, 20°], and the number of points accounts for 84.3% of the total in this interval. In the interval where the direction residuals is smaller, the percentage of the number of the points calculated by the combined model is greater than that calculated by the dislocation model, indicating that the combined model can better explain the surface deformation observation.
Dual-beam laser welding and seam accurately tracking control for 3D T-joint
Authors: Gong Shihua , Wang Ziyue , Ma Xiuquan , Yang Jianzhong , Wang Pingjiang 
Published: September 2019

Abstract
The processing methods and quality of T-joint directly affect the performance of stiffened panels. In this paper, firstly, a ten-six axis dual-beam laser welding system is constituted to research the T-joint welding process. Then, the ten-six axis controller in laser welding system is designed to achieve the accurate controlling for position and attitude of welding head during 3D welding of T-joint. In addition, the real-time measurement on both sides of T-joint is adopted to enable deformation compensation and precise tracking for welding seam. Finally, the T-joint welding tests are carried out and the results show that the welding seam errors are within allowable range. Consequently, the dual-beam laser welding and seam tracking control technology presented in this study can meet the processing requirements for T-joint.
Laser Cutting Machine Tool Monitoring and Assistance System Based on Internet of Things and Cloud Service
Authors: Bu Xiang-Li , Li Guan , Li Xiao-Ping , Li Pan 
Published: September 2019

Abstract
With the development of computer technology and the increasing application of Internet of Things technology, traditional monitoring and assistance system for laser cutting machine tools can no longer meet the needs of Intelligent Manufacturing in modern enterprises. We proposed a remote monitoring and assistance system based on Internet of Things and cloud services for the laser cutting machine tools. STM32 chip is selected for field data acquisition and ESP32 chip is selected for the WIFI gateway. Cloud monitoring system is implemented IoT on platform and Elastic Computer Service. Monitoring and interaction software is developed in mobile phones and local PC. Laboratory tests show that the system is feasible for the improvement of production and maintenance efficiency of laser cutting machine and provide a low-cost remote diagnosis and maintenance system for laser processing enterprises and laser cutting machine tool manufacturers.
New Intelligent Logistics Mode Based on Intelligent Express Box
Authors: He Hui , Wang Ai-Lin , Xiao Peng-Yang , Zhao Shu-Lin , Liao Si-Rui 
Published: September 2019

Abstract
The Internet of things is the product of the information waving in the new era. It rapid development has been widely used in daily life. This paper introduces an automated, digital intelligent logistics model. It introduces intelligent equipment in the entire logistics chain, and utilizes big data analysis and integrated warehouse system management mode to reduce personnel costs to improve link efficiency resource scheduling. Under the invisible push of the market, whether the intelligent logistics can be popularized comprehensively has become the key that restricting the development of the logistics industry in the future.
Simulation and comparision of GaAs, AlGaAs and GaInP barriers in InGaAs quantum well lasers
Authors: Huibo Yuan , Li Lin , Zeng Lina , Zhang Jing , Li Zaijin , Qu Yi , Ma Xiaohui , Liu Guojun 
Published: September 2019

Abstract
InGaAs quantum wells with GaAs, AlGaAs and GaInP barriers have been simulated, respectively. The InGaAs/GaInP structure reveals a high material gain which could be nearly 1.4 times of that of InGaAs/GaAs. Threshold current of InGaAs/GaInP structure is less than half of InGaAs/AlGaAs. A high slope efficiency of 1.57 W/A from InGaAs/GaInP structure is observed with indium content as high as 0.35. InGaAs/GaInP structure will be the most appropriate candidate to fabricate a laser diode with high slope efficiency and low threshold current.
Research on image monitoring method of electron beam selection melting
Authors: Wang Jiaming , Yin Bohua , Xu Guanglu , Liu Junbiao , Wang Yan , Han Li 
Published: September 2019

Abstract
In order to overcome the problem that the lack of real-time detection technology and the existing detection methods cannot select the process area flexibly in the process of electron beam selective melting, this paper presents a digital electronic imaging method which can monitor the roughness and tiny flaws on the surface of components layer by layer. The digital electronic images were produced by detecting both secondary electrons (SE) and backscattered electrons (BSE) originating from interactions between the electron beam and the metal powder. The imaging principle and the hardware circuit of the system are introduced in detail. Finally, the effectiveness of this design is verified by the experiments.
Experimental Investigation on the Spatial-temporal Evolution of the hole formation during Laser Helical Drilling
Authors: Dong Y W , Wu Z P , Yan W G , Li X J , You Y C 
Published: September 2019

Abstract
In order to study the influence of process parameters of femtosecond laser helical machining on the formation of micro-holes, we selected main parameters of the femtosecond laser helical drilling process, used 304 stainless steel as the target material, designed a 5-factor and 5-level orthogonal experiment based on the L
25 (56) orthogonal table, and analyzed the significance levels of the impacts of single pulse energy, repetition rate, rotation rate, rate of focus downward movement, and air-blowing pressure on the ablation depth. Based on back propagation (BP) neural network, we established the relationship model between five factors and the material ablation depth, and trained the network with orthogonal experiment data. We used the data of the additional drilling experiments to test the generalization ability of the established network, and the results show that the prediction error of the model is within 3%. We designed a single-factor experiment for the characteristic parameter of the helical drilling--the rate of focus downward movement--and obtained the effect of the rate of focus downward movement on the formation of the micro-holes during the process of femtosecond laser helical drilling.
Application of Blockchain Technology in Energy Internet Market and Transaction
Authors: Zhu Xingxiong 
Published: September 2019

Abstract
Based on the blockchain technology, important datas such as transactions, scheduling, finance, and energy contracts are distributedly recorded, various resources such as distributed energy generation, energy transmission, energy consumption, and energy storage are aggregated for collaborative optimization control and market trading. In this paper, we build blockchain-based new generation energy Internet with extensive interconnection, intelligent decision making, real-time interaction, and open sharing. The application of blockchain technology in energy Internet includes photovoltaic energy microgrid, blockchain-based energy Internet entities, blockchain-based power trading, and energy asset securitization. Technical frameworks for energy Internet market trading system based on blockchain technology are proposed. Distributed energy ledger and energy trading smart contract are utilized. Distributed trading rules, algorithms and processes of energy system and microgrid are established. Energy Internet transactions and payment settlement system are constructed. Energy producers and consumers trade peer-to-peer on the platform to improve system efficiency and security.
Traditioanl Settlements Study on Sciences of Human Settlements in Erhai Lake Region
Authors: Yang Rongbin , Yang Dayu 
Published: September 2019

Abstract
Five systems of sciences of human settlements are adopted in this paper. The research objects are Malong site of Cangshan Mountain, Nanzhao Taihe City site, Dali Ancient City, Xizhou Ancient Village, Shuanglang Ancient Town and Jinsuo Island Village. All the research objects are near the Erhai Lake region and they are traditional settlements with different historical periods. The natural, human, social, residential and supportive systems of traditional settlements are analyzed as well. The environmental and ecological view of complying with nature, the social and economic view of emphasizing development and the cultural and technical view of embodying characteristics of traditional settlements in Erhai Lake region are also concluded. This paper offers theoretical references for the sustainable development of traditional human settlements.