bluuebunny/crossref_metadata_2025_split huggingface dataset:
Multi-modal big data knowledge aggregation for advanced automobile intelligent manufacturing operation and maintenance
Authors: Rui Yang , Zhijie Xu , Tianjie Xie , Yu Zhang 
Published: November 2020

Abstract
In this study, automatic knowledge extraction technology is analyzed for advanced automobile intelligent manufacturing operation and maintenance multi-modal information with knowledge graph construction method and complex knowledge reasoning method. An association representation model is proposed based on deep feature learning, a unified multi-modal semantic space is constructed, and a semantic matching technology for multi-modal equipment operation and maintenance is designed based on the reasoning method of deep recurrent neural network.
The Robot Intelligent Spraying Glazing System for Sanitary Ceramics Industry
Authors: Qian Zhou , QingLong Mo , YongQian Xu , Lin Gan 
Published: November 2020

Abstract
Aiming at the current situation and existing problems of the sanitary ceramics industry, the paper presents the R&D of a set of multi - robot cooperation in the spraying glazing system. Firstly, the paper introduces the requirement of spraying glazing and puts forward the technics of spraying grazing robot. Then the paper introduces the system solution of spraying glazing robot, the working mode of the cooperative multi-robot, and the method of robot trajectory planning. Finally, according to the real experimentation of established spraying glazing robot system, the paper tested and verified the performance of the system. This system plays a positive demonstration role in the sanitary ceramics industry.
Design and Analysis of Iron Roughneck Non-Clamp-Tooth Clamping Mechanism
Authors: Yan Wenhui , Xie Dong , Guo Litong , Zhao Longgui , Peng Yong , Hu Nan 
Published: November 2020

Abstract
During the makeup and breakout operation of iron roughneck, the performance of the clamp tooth holding the pipe string directly affects the drilling efficiency and the service life of the pipe string. In this paper, a cylindrical non-clamp-tooth Clamping body with 20CrMnTi material is designed to replace the upper shackle clamp tooth. In the up-shackle operation of the torque wrench, the clamping body contacts the outer wall of the string in the form of two parallel axis cylinders, the relationship between each influencing factor and contact stress is established, and the contact stress and deformation of the string are simulated by finite element method. This non-clamp-tooth clamping body can reduce the damage degree of the string, make its elastic deformation not exceed 1mm, and improve the service life of the clamping body.
Transferring Process of Matter Content in the Center of the Bay
Authors: Yang Dongfang , Huang Xinmin , Jiang Tao , Wei Linzhen , Chen Mei 
Published: November 2020

Abstract
Based on investigation data on Pb in Jiaozhou Bay waters in May, August and October 1992, the author introduces horizontal and vertical variation models of matter content to calculate the horizontal loss amount, vertical dilution amount and vertical sediment amount of the Pb content in both surface and bottom waters and establishes modeling chart of its horizontal and vertical variation. The results show that the absolutely and relatively horizontal loss amount of the Pb content in the bottom waters were 6.23μg/L and 59.73% respectively in May. Absolutely horizontal increase amount of the Pb content in the bottom waters varied from 4.14 to 5.51μg/L, and relatively horizontal increase amount varied from 22.59% to 35.59% in August and October. In May, August and October, the Pb content in both surface and bottom waters had an absolutely vertical dilution amount of 2.18μg/L and a relatively vertical dilution amount of 22.54% in the waters of the southeast of the bay. Besides, the absolutely vertical sediment amount of the Pb content in both surface and bottom waters ranged from 4.89μg/L to 7.58μg/L and the relatively vertical sediment amount ranged from 40.14 to 46.88% in the same waters. As for in the central waters of the bay, the absolutely and relatively vertical dilution amount were 3.17μg/L and 43.01% respectively, the absolutely and relatively vertical sediment amount were 1.18-18.86μg/L and 10.14-77.32% respectively during the same period. The variation model of matter content reveals that the Pb content transported by the main sea currents settled as sediment in the waters of the southeast of the bay, and it continued to accumulate in the bottom waters from May to August. The Pb content in that area was transported to the bottom waters of the center of the bay through the bottom of ocean floor so that a large amount of the Pb content was accumulated there from August to October. The author introduces the transferring process of the matter content in the center of Jiaozhou Bay: matter content brought by the main sea currents settles as sediment in the offshore waters and keeps accumulating in its bottom layer under the tidal effect and current action then moves through the bottom layer of the ocean floor to the bottom waters of the center of the bay. As a result, the matter content accumulates a lot there, and keeps rising to reach its surface waters.
Corrosion Behavior of 316L Stainless Steel Weld under Constant Strain
Authors: Xiejunjun  , Wangao  , Yuanyongliang  , Gaoyang  
Published: November 2020

Abstract
316L stainless steel is widely used in the fields of thermonuclear industry and petrochemical industry due to its excellent comprehensive mechanical properties and corrosion resistance. Especially in the petroleum industry, 316L stainless steel is commonly used as oil pipelines and storage tanks because of its high corrosion resistance to media such as CO2. However, Petroleum and natural gas generally contain corrosive media, such as high concentrations Cl−, CO2, H2S. When petroleum pipelines work in such a strong corrosion environment for a long time, pitting corrosion or stress corrosion cracking is easy to occur, and these corrosion behaviors preferentially occur in defects such as welds and heat-affected zones. Therefore, in order to ensure the safety and durability of oil and gas export process, it is necessary to study the stress corrosion cracking sensitivity of oil and gas pipeline, especially the stress corrosion sensitivity of oil and gas pipeline weld seam, heat affected zone and other defects. the paper uses three-point bending loading method, and the corrosion morphology of the sample is analyzed by optical microscope. Researching 316L stainless steel weld corrosion behaviors under constant strain.
The Design of The Algorithm For Measuring The Straightness of Deep Hole Based on Matlab
Authors: Liu YanShu , Wang Chi , Wang Yu , Liu Hui , Wang Kun 
Published: November 2020

Abstract
Straightness of deep hole is an important quality index of deep hole parts. Due to the different methods of detecting the straightness of deep hole, the accuracy of the mathematical model for straightness evaluation is also different. In order to get a more accurate measurement method, this paper through the bus measurement, using the principle of least square method to evaluate straightness, establishes a mathematical model suitable for the measurement method, and uses MATLAB software to compile the data processing program. The automatic calculation of straightness error is realized, and the feasibility of the algorithm is verified by simulation experiment.
Application technology of hot film flow sensor in intelligent electronic cigarette
Authors: Zhang Bin , Ma Pengfei , Zheng Xiaoyin , Qiu Guocai , Chen xinzhun 
Published: November 2020

Abstract
The application technology of hot film flow sensor in intelligent electronic cigarette is discussed, and the hardware scheme and software implementation of the technology are discussed and studied. This paper forecasts the development trend of intelligent electronic smoke for smoke inhalation monitoring.
Remote Sensing Images Data Augmentation Based on Style Transfer under the Condition of Few Samples
Authors: Jiang Yuchen , Zhu Bin , Xie Bo 
Published: November 2020

Abstract
To solve the problem that the detection accuracy of remote sensing image is affected by convolution neural network overfitting under the condition of small samples, a data augmentation method based on style transfer is proposed, in which new data is generated from texture of external domain to source domain by using cycle-consistent adversarial networks(CycleGAN). The experiment results show that the accuracy of detection and recognition is improved after adding the generated data to the original data.
Research on ingot casting of multicrystalline silicon miscellaneous materials for solar cell
Authors: Yang Xiufan , Zhang Dianxi , Guo Zhongzheng , Yan Wanjun , Zhang Houyong 
Published: November 2020

Abstract
Using multicrystalline silicon miscellaneous materials for ingot casting, optimizing the ingot casting process and charging formula, the utilization rate of silicon material is 66.15%, effectively improving the utilization of multicrystalline silicon miscellaneous materials. The minority carrier lifetime of the silicon block is 5.02us, which meets the requirements of solar cell products. The other electrical properties of the silicon block meet the needs of the product, and the miscellaneous ingots realize the reuse of resources, greatly reducing production costs and improving benefits.
Mechanical and electrolytic hybrid grinding of metal ceramic composites using coarse diamond grinding wheel
Authors: Lu Yanjun , Sun Jiajing , Chen Fumin , Mo Rui , Li Liejun , Gao Jixiang 
Published: November 2020

Abstract
The application and development of metal ceramic composites have been restricting due to its low grinding efficiency and ground quality. In this paper, the hybrid machining technology combined mechanical with electrolytic grinding based on dressed coarse diamond grinding wheel is proposed to perform efficient and precise grinding of metal ceramic composites. First, the dry electrical discharge dressing technology was used to dress coarse diamond grinding wheel to obtain high grain protrusion and sharp micro-grain cutting edges. Next, the mechanical and electrolytic hybrid grinding process using dressed coarse diamond wheel was developed to grind metal ceramic. Finally, the effects of different process parameters on ground surface topographies and surface roughness were investigated. It is shown that the proposed hybrid grinding method was feasible and can effectively improve the ground surface quality. The experimental results show that the optimal process parameters including the depth of cut, open-circuit voltage and impulse width were 5 μm, 20 V and 400 ns, respectively. Compared with traditional mechanical grinding, the ground surface roughness by the proposed hybrid machining method was improved by about 25%.
Intelligent breakout prediction method based on support vector machine
Authors: Tian Yuanpeng , Liu Yu 
Published: November 2020

Abstract
Breakout is a serious accident during continuous casting. In order to reduce breakout accident, a breakout prediction method was proposed based on support vector machine model. The typical characteristics of continuous casting breakout were reconstructed by thermocouple temperature signals. The temperature data of three adjacent thermocouples in the first row were added and then connected with the temperature data of the middle second row, which was used to capture the typical spatial characteristics of breakout. The 80% of true and false breakout samples were used to train the support vector machine model and 20% samples were used to test the model. The results show that this method can predict all breakouts, which has a true-sticker alarm rate of 100%. There is one false alarm and the accuracy rate is 95.8%.
Finite Element Analysis of the Deformation Behavior of the Up and Down Roll Differential Diameter Rolling for Medium Plate
Authors: Wang Weihua , Lu Shiping 
Published: November 2020

Abstract
In order to realize the rolling technology with different reduction of upper and lower surface in the production of medium and heavy plate, a rolling technology with the same rolling line speed and different diameter of upper and lower rolls was adopted in a factory, and good results were achieved. This technology is different from the previous large roll diameter difference rolling and differential speed rolling. Large roll diameter difference rolling is an asynchronous rolling technology, which uses the difference of upper and lower roll diameter to cause the different linear speed of rolling, so as to achieve the purpose of upper and lower pressure rolling. It is mainly used in the production of section steel, and belongs to the asymmetric rolling condition. Under the condition of asymmetric rolling with unequal roll diameter, a three-dimensional large deformation and asymmetric rolling FEM model is established by using the finite element software. The stress and deformation behavior of the deformation area of the steel plate are analyzed. The fiber length changes along the longitudinal direction at different thickness positions and the shape change of steel plate in the rolling process are obtained. The results show that when the diameter of the upper roll is larger than that of the lower roll, the Mises equivalent stress, equivalent plastic strain and the change of the length of the longitudinal fiber in the deformation area are approximate distributed symmetrically along the center of the two sides, the center value of steel plate is small, and the upper and lower surface values are large; the equivalent stress of the lower surface is larger than the upper surface, and the minimum change of the fiber length appears about 1/3 of the thickness from the lower surface. Under the condition of asymmetric up and down rolling, the head of steel plate tends to down-bending. The maximum distance of the steel plate head buckle ∆y is 0.185 m, the bending radius is 6.519m and the bending curvature is 0.153.
Research of A Macro Program for Bolt Hole Patterns Based on EXCEL®
Authors: Pingping Liu , Danhao Qian , Konglei Zhu 
Published: November 2020

Abstract
EXCEL® is a Microsoft Office software product, which has excellent numerical and logic calculation and analysis functions. The method of programming a CNC macro program using EXCEL® is being presented in this paper for the first time. By defining the locations of a hole pattern geometrically, and simulating the programming of a macro, it can be demonstrated that a CNC program using macros is simple and easy to understand, and the program is flexible, generic and portable.
Thermal decomposition of magnesium acetate in nitrogen
Authors: Jiang Yu , Chen Hukui , Mu Xiaxia , He Zhijun 
Published: November 2020

Abstract
In this paper, the thermal decomposition process of magnesium acetate, Mg (CH3COO)2·4H2O, in nitrogen atmosphere was studied by thermal analysis methods, and the solid products after thermal decomposition were analyzed by XRD, FE-SEM and EDS. The results show that the thermal decomposition process of magnesium acetate went through four steps: the first step was the dehydration of magnesium acetate to produce anhydrous magnesium acetate; the second step was the conversion of anhydrous magnesium acetate to magnesium oxalate; the third step was magnesium oxalate to magnesium carbonate, and the final step was magnesium carbonate to magnesium oxide.
Research on innovative design of vehicle loading plate for non avoidance stereo garage based on ARIZ
Authors: Zhang Po , Zhang Mingqin , Wang Hong 
Published: November 2020

Abstract
As a form of garage with simple structure and convenient installation, non avoidance stereo garage is widely used in densely populated places such as shopping malls and hospitals. It can effectively improve the land utilization rate in a narrow space, which is of great significance to solve the parking problem. In this paper, the ARIZ algorithm of TRIZ is used to deeply study the car loading plate of non avoidance stereo garage in the market, and analyze the shortcomings of its existing structure. According to the process of ARIZ algorithm solving the problem, the nonstandard problem is transformed into a simple problem model, and the ideal solution is conceived. Using the conflict matrix and 40 invention principles, a new type of vehicle loading plate for non avoidance stereo garage is designed Vehicle loading plate structure.
Experimental Analysis of the Car Body Suspended Equipment Vibration for High-speed Railway Vehicles
Authors: Deng Hai , Chen Sijie 
Published: November 2020

Abstract
Existing researches state that the rigid-flexible coupling vibration of the car body and car body suspended equipment deteriorates the ride comfort of a high-speed train, but a few works validate it through field tests. In this investigation, field measurements on the vibration of bogie, car body and car body suspended equipment of a high-speed train was carried out to reveal their coupling interaction characteristics. A design solution for the equipment suspension frequency is then summarized by its weight and excitations bears on. Tests show that bogie dominates a lateral vibration at 4.5 Hz in normal track segments but it rises to 7.4 Hz while hunting occurs. The equipment acceleration is significantly larger than that on car body since the high-frequency vibration bears on it is well isolated from the car body. When bogie hunting occurs, a structural resonance on the car body was noticed, and the lateral and vertical acceleration on equipment rise to 0.2 g and 0.4 g, respectively, with respect to 0.1 g and 0.2 g in a normal case. The vibration discrepancy on the equipment among track lines is quite obvious.
Experimental Analysis of Ride Comfort Quality for High-speed Railway Vehicles
Authors: Huang Jiangwei , Chen Sijie 
Published: November 2020

Abstract
In order to study the vehicle comfort, in this investigation, the empty dynamic test is carried out on the vehicle operating line, and the conditions of air spring inflated and air spring deflated are considered respectively. On condition of air spring inflated, the test speed of vehicle starts from 60 km/h, with a speed step of 20 km/h, up to 140 km/h. On condition of air spring deflated, the test speed of vehicle starts from 40 km/h, with a speed step of 20 km/h, up to 100 km/h. Then the vehicle body vibration acceleration is measured, and data is carried out processing through the standard EN12299-2009 Railway applications – Ride comfort for passengers – Measurement and evaluation. The results of test and data processing show that: under the normal condition of air spring, the maximum values of ride comfort index of motor (D1) and trailer (M1) are 1.43 and 1.70 respectively, both less than 2.5; under the condition of airless spring, the maximum values of riding comfort index of motor (D1) and trailer (M1) are 1.94 and 2.23, both less than 3.0.
Finite element analysis and testing on the vibration mode of small grinding carriage in high-efficiency CNC grinding machine
Authors: Zheng Dateng , Zhang Qing , Zhang Jing , Yao Haibiao , Yin Sanfeng 
Published: November 2020

Abstract
The small grinding carriage is a key component of the high-efficiency computerized numerical control (CNC) grinding machine. The machining of the small grinding wheel is the last process of the workpiece on the grinding machine, and its vibration performance has an important influence on the grinding precision. A novel low vibration grinding carriage using finite element analysis method (FEM) was designed to validate its vibration performance before producing. In this study, the finite element model of the small grinding carriage was established. The finite element calculation was performed using the Block Lanczos algorithm, and the first natural frequency of the small grinding carriage was 283.2 Hz. Besides, the experimental modal analysis method of ambient excitation was used to test and analyze the small grinding carriage assembled to a grinding machine. The modal parameters of the system structure were identified based on the theoretical auto power spectrum. The first five natural frequencies and damping ratios of the small grinding carriage were obtained. The accuracy of the recognition results was verified using the modal judgment criteria. The two methods cross-validated the structure design of the small grinding wheel, which can avoid resonance during machining. The results provided in this paper can serve as a reference for the subsequent structural optimization design.
Simulation and Research of Aerospace Material Milling Based On ABAQUS
Authors: Zhang Yanzhong , Huang Xiaohua 
Published: November 2020

Abstract
In this paper, ABAQUS simulation software is used to establish the model of the tool and the blank. Through the simulation of the single tooth milling process of 2024 aviation aluminum alloy material, the temperature and stress distribution cloud diagram, the cutting force curve are obtained. The effects of various cutting factors on the milling temperature are studied using simulation methods. The study found that the milling temperature increased with the increase of the axial depth of cut, radial depth of cut, cutting speed, and feed per tooth, among which the cutting speed had the greatest effect on temperature.
ROS-responsive probes for low-background optical imaging: a review
Authors: Xu Yan , Yang Weitao , Zhang Bingbo 
Published: November 2020

Abstract
Optical imaging is a facile tool for visualizing biological processes and disease progression, but its image quality is largely limited by light-induced autofluorescence or background signals. To overcome this issue, low-background optical-imaging techniques including chemiluminescence imaging, afterglow imaging and photoacoustic imaging have been developed, based on their unique working mechanisms, which are: the detection of light emissions from chemical reactions, the cessation of light excitation before signal collection, and the detection of ultrasonic signals instead of light signals, respectively. Stimuli-responsive probes are highly desirable for improved imaging results since they can significantly reduce surrounding interference signals. Reactive oxygen species (ROS), which are closely implicated in a series of diseases such as cancer and inflammation, are frequently employed as initiators for responsive agents to selectively change the imaging signal. Thus, ROS-responsive agents incorporated into low-background imaging techniques can achieve a more promising imaging quality. In this review, recent advances in ROS-responsive probes for low-background optical-imaging techniques are summarized. Moreover, the approaches to improving the sensitivity of probes and tissue penetration depth are discussed in detail. In particular, we highlight the reaction mechanisms between the probes and ROS, revealing the potential for low-background optical imaging.
Recent California tree mortality portends future increase in drought-driven forest die-off
Authors: Madakumbura Gavin D , Goulden Michael L , Hall Alex , Fu Rong , Moritz Max A , Koven Charles D , Kueppers Lara M , Norlen Carl A , Randerson James T 
Published: November 2020

Abstract
Vegetation tolerance to drought depends on an array of site-specific environmental and plant physiological factors. This tolerance is poorly understood for many forest types despite its importance for predicting and managing vegetation stress. We analyzed the relationships between precipitation variability and forest die-off in California’s Sierra Nevada and introduce a new measure of drought tolerance that emphasizes plant access to subsurface moisture buffers. We applied this metric to California’s severe 2012–2015 drought, and show that it predicted the patterns of tree mortality. We then examined future climate scenarios, and found that the probability of droughts that lead to widespread die-off increases threefold by the end of the 21st century. Our analysis shows that tree mortality in the Sierra Nevada will likely accelerate in the coming decades and that forests in the Central and Northern Sierra Nevada that largely escaped mortality in 2012–2015 are vulnerable to die-off.