bluuebunny/crossref_metadata_2025_split huggingface dataset:
Expert-level classification of gastritis by endoscopy using deep learning: a multicenter diagnostic trial
Authors: Mu Ganggang , Zhu Yijie , Niu Zhanyue , Ding Shigang , Yu Honggang , Li Hongyan , Wu Lianlian , Wang Jing , Luo Renquan , Hu Xiao , Li Yanxia , Zhang Jixiang , Hu Shan , Li Chao 
Published: May 2021

Abstract
Background and study aims Endoscopy plays a crucial role in diagnosis of gastritis. Endoscopists have low accuracy in diagnosing atrophic gastritis with white-light endoscopy (WLE). High-risk factors (such as atrophic gastritis [AG]) for carcinogenesis demand early detection. Deep learning (DL)-based gastritis classification with WLE rarely has been reported. We built a system for improving the accuracy of diagnosis of AG with WLE to assist with this common gastritis diagnosis and help lessen endoscopist fatigue.
Methods We collected a total of 8141 endoscopic images of common gastritis, other gastritis, and non-gastritis in 4587 cases and built a DL -based system constructed with UNet + + and Resnet-50. A system was developed to sort common gastritis images layer by layer: The first layer included non-gastritis/common gastritis/other gastritis, the second layer contained AG/non-atrophic gastritis, and the third layer included atrophy/intestinal metaplasia and erosion/hemorrhage. The convolutional neural networks were tested with three separate test sets.
Results Rates of accuracy for classifying non-atrophic gastritis/AG, atrophy/intestinal metaplasia, and erosion/hemorrhage were 88.78 %, 87.40 %, and 93.67 % in internal test set, 91.23 %, 85.81 %, and 92.70 % in the external test set ,and 95.00 %, 92.86 %, and 94.74 % in the video set, respectively. The hit ratio with the segmentation model was 99.29 %. The accuracy for detection of non-gastritis/common gastritis/other gastritis was 93.6 %.
Conclusions The system had decent specificity and accuracy in classification of gastritis lesions. DL has great potential in WLE gastritis classification for assisting with achieving accurate diagnoses after endoscopic procedures.
Effects of an odd particle on shape phase transitions in odd-even systems *
Authors: Xiu Chang , Zhang Yu , Li Ming-Jin , Yang Jie , Chen Yan-Xia 
Published: May 2021

Abstract
A scheme to solve the Hamiltonian in the interacting boson-fermion model in terms of the SU(3) coupling basis is introduced, through which the effects of an odd particle on shape phase transitions (SPTs) in odd-A nuclei are examined by comparing the critical behaviors of some selected quantities in odd-even and even-even systems. The results indicate that the spherical to prolate (U(5)-SU(3)) SPT and spherical to

-soft (U(5)-O(6)) SPT may clearly occur in the odd-even system with the SPT signatures revealed by various quantities including the excitation energies, energy ratio,

ratio, quadrupole moments, and one-particle-transfer spectroscopic intensities. In particular, the results indicate that the spherical to prolate SPT in the odd-even system can even be strengthened by the effects of the odd particle with the large fluctuations of the quadrupole deformations appearing near the critical point.
Light fragment and neutron emission in high-energy proton induced spallation reactions *
Authors: Cheng Hui-Gan , Feng Zhao-Qing 
Published: May 2021

Abstract
The dynamics of high-energy proton-induced spallation reactions on target nuclides of 56Fe, 58Ni, 107Ag, 112Cd, 184W, 181Ta, 197Au, and 208Pb are investigated with the quantum molecular dynamics transport model motivated by the China initiative Accelerator Driven System (CiADS) in Huizhou and the China Spallation Neutron Source (CSNS) in Dongguan. The production mechanism of light nuclides and fission fragments is thoroughly analyzed, and the results obtained thereby are compared with available experimental data. The statistical code GEMINI is employed in conjunction with a transport model for describing the decay of primary fragments. For the treatment of cluster emission during the preequilibrium stage, a surface coalescence model is implemented into the model. It is found that the available data in terms of total fragment yields are well reproduced in the combined approach for spallation reactions both on the heavy and light targets. The energetic light nuclides (deuteron, triton, helium isotopes etc) mainly created during the preequilibrium stage are treated within the framework of surface coalescence, whereas their evaporation is described in the conventional manner by the GEMINI code. With this combined approach, a good overall description of light clusters and neutron emission is obtained, and some discrepancies with the experimental data are discussed. Possible production of radioactive isotopes in the spallation reactions is also analyzed, i.e., the 6,8He energy spectra.
Perspective Approaches of Stranded Gas Fields Monetization in the Russian Arctic
Authors: Melnikov G S , Lunkova L G , Gulkova S G , Nikitina A V , Gulkov A N 
Published: May 2021

Abstract
The future growth and development potential of the Russian oil and gas industry is concentrated in the Arctic. Most of Russia’s gas reserves - about 70% [1] - are in the Arctic regions of the Russian Federation - the Yamalo-Nenets Autonomous District and the Krasnoyarsk Territory. One of the key issues in the monetization of gas is the logistics problem of delivering gas from the field to a consumer with high profitability. The work identified three key areas of natural gas delivery: pipeline transport, LNG production and Gas-to-liquids (GTL) technology. The paper is provided analysis of these methods of developing gas fields. As a result, recommendations for the use of each of them is evaluated.
The level of knowledge Of Wheat Farmers in Axial Irrigation by Applying Practical Recommendations in The Upper Euphrates / Anbar Governorate (2020/2021)
Authors: Maagal S. A. , Ali M. K. 
Published: May 2021

AbstractThe research aimed to determine the knowledge level of wheat Farmers with pivotal irrigation by applying scientific recommendations in regions of the upper Euphrates/Anbar Governorate in general, and to identify the correlation coefficient between knowledge of farmers and some independent variables, as well as to determine the relationship of regression between knowledge of farmers and the group of variables studied. The regions of the upper Euphrates region were chosen to conduct the current research. The research population included all farmers who use pivotal sprinkler irrigation systems in the upper Euphrates in Anbar Governorate, and are officially registered in the Anbar Agriculture Directorate, whose number are (741) farmers* distributed among (7) agricultural divisions, A proportional random sample was selected from each division, with percentage of (20%) becomes of (140) farmers who represent the research sample. For the purpose of collecting data from the respondents a questionnaire form composed of two parts was prepared, first part: it included a number of questions to obtain data related to some independent variables related to the respondents, and the second, included (50) standard items to measure the respondents’knowledge distributed into four field, which is System configuration, operation, irrigation, maintenance and fertilizer use, The results showed that The general level of farmers’knowledge of the scientific recommendations related to pivot sprinkler irrigation is high, tending to medium. From this it follows the farmers’ awareness of the importance of information and knowledge related to pivot irrigation, and there are 37.2% of the respondents are in the medium and low categories. The researcher recommended, that necessity to provide material and moral support to farmers with a high level of knowledge in order to continue implementing the scientific recommendations as well as to motivate farmers in the middle and lower categories to work as their peers from the superior farmers, and necessity to prepare and implement extension activities for farmers with a low level of knowledge.
Classification method of carbonate reservoir welltest interpretation model based on long and short-term memory network
Authors: Lu Jinghan , Wu Minglu 
Published: May 2021

Abstract
The development of carbonate reservoirs is inseparable from the measurement of formation parameters, and well test interpretation techniques are often used to determine these parameters. Determining the carbonate reservoir type according to the shape of the well test interpretation curve will help people better understand the reservoir situation and enable more precise well test interpretation. This research focusing on the well test interpretation of carbonate oil and gas reservoirs combined with the actual data of the mine field and uses deep learning algorithms such as feature value extraction, clustering and neural network training to classify the types of carbonate oil and gas reservoirs. Neural network training is further carried out for different types of carbonate reservoirs, so as to achieve the purpose of identifying reservoir types at the algorithm level.
Influence Analysis of Rated Capacity on Stress Level of Portal Slewing Crane Based on Data Mining
Authors: Wen Haobai , Li Jing 
Published: May 2021

Abstract
Portal slewing crane is used frequently and the working conditions is poor. Rated capacity is the main technical parameter of crane. In this paper, according to different rated capacities, high stress value measuring points are selected by means of statistical test data samples, and the relationship between the overall stress and the rated capacity as well as the distribution law of each position are determined. Furthermore, the stress distribution law of high stress value measuring points and the stress characteristics of each position on cranes with different rated capacities are excavated.
Research and exploration on production decline curve model of shale oil and gas
Authors: Zou Yongling , Wang Juan , Cai Liang , Cao Jun , Su Jianhua 
Published: May 2021

Abstract
The inconsistency of shale oil and gas production decline prediction methods leads to the inconsistency of shale oil and gas production decline curve prediction. Aiming at this problem, this paper introduces five commonly used shale oil and gas production decline curve models: typical curve model based on ARPS model, modified hyperbolic decline model, power index model, mixed typical curve model and Duong model. The prediction methods of uncertainty typical curve model and certainty typical curve model are studied. The results show that the production history of multistage fractured horizontal wells is not long enough, and it is difficult to verify the production decline in the later stage, so it is suggested to use hyperbolic decline model or modified hyperbolic decline model. Aiming at the blocks with production data, a prediction method of uncertain shale oil and gas production decline based on production performance data is proposed. The results are in good agreement with the actual production data, and can be used in oilfield production allocation. Due to the characteristics of shale reservoir such as nanometer pore size, nadasi permeability, strong heterogeneity and high fracturing strength of long horizontal wells, the output of shale oil and gas wells varies greatly. The typical production decline curve obtained by deterministic method has certain risk.
Study on Pore Structure and Seepage Characteristics in Huhenuoren Oilfield
Authors: Wang Haiyan 
Published: May 2021

Abstract
Pore structure and seepage characteristics have been studied in view of the problem of watercut rose rapidly in Nantun formation of huhenuoren oilfield of Hailar basin. Fan delta deposition with characteristics of close resource, rapidly accumulation results in pore distribution does not uniform, communication are weak. Throat distribution takes on dual peak. Left peak corresponds to smaller throat, which is invalid throat; Right peak corresponds to bigger throat, which is valid throat and seepage channel. There exists big difference in pore structure. Microanisotropy is very strong. Movable oil saturation is relatively low. Water relative permeability takes on convex shape. Strong water sensitivity and big Jamin effect brought about that injection water hard to displace oil below 1μm throat radius. The oil production above 1μm throat radius is about 77% of total oil production by NMR test. Throats above 1μm radius are preferred path of injection water, are the main reason for watercut rising rapidly.
Three-dimensional linear seismic analysis of normal concrete gravity dam
Authors: He Taolin , Zhu Bo , Kui Ren 
Published: May 2021

Abstract
The three-dimensional linear finite element model is established for the bottom outlet dam section of concrete gravity dam. Mode-superposition response spectrum method and the massless foundation time history method are adopted to analyze the static and dynamic comprehensive stress response and displacement response of the dam under the action of the standard response spectrum of the design earthquake or the corresponding artificial wave under the action of design earthquake and check earthquake. The results show that the dam works well in seismic condition. In addition, the influence of radiation damping of infinite foundation on the dynamic response of the dam section under different seismic waves is analysed. By comparing the dynamic and static comprehensive stress changes of the dam, it shows that after considering the radiation damping effect of the infinite foundation, the dynamic response of the dam body is significantly reduced.
An active indoor formaldehyde purification device
Authors: Wang Yunqing 
Published: May 2021

Abstract
Formaldehyde is one of the main sources of indoor air pollution, and the removal effect of formaldehyde of common indoor air purification methods such as placing activated carbon bags or green plants and opening windows for ventilation is not ideal. This paper introduces an active indoor formaldehyde purification device that uses a motor to form the air convection and thus purify the polluted air twice. The multiple activated carbon tubes on the device increase the contact area between the activated carbon and polluted air thereby improve the purification efficiency. The experimental detection has proven that the active indoor formaldehyde purification device has a much better formaldehyde removal effect than ordinary activated carbon products, and has high practical value.
Research on Intelligent Transportation Logistics Technology Based on Energy Saving and Emission Reduction
Authors: Xue Pu , Weipeng Luo 
Published: May 2021

Abstract
Through the analysis of the relationship between logistics and economy, energy and environment, a mathematical model for the path optimization of multiple logistics distribution centres for energy conservation and emission reduction in logistics is established. According to the characteristics of the problem, a genetic algorithm is constructed to solve the problem, and the path optimization problem of multiple logistics distribution centres is integrated and solved by a mathematical model. This thesis establishes a mathematical model of the path optimization problem of multiple logistics distribution centres. This article proposes the concept of invalid genes, which is not limited to making every gene in an individual must be expressed, thus enhancing the flexibility of coding. Simulation experiments prove the effectiveness and operability of the method.
Research on the Stock and Flow of Plastic Resources in China’s Environment
Authors: Su Qingxiang 
Published: May 2021

Abstract
The waste of plastic resources and environmental pollution with the rapid growth of plastic production and consumption is becoming more and more serious, so the study of the metabolic process of plastic resources is very important to save resources and protect the environment. This paper examines the life cycle metabolic process of plastics accumulated through 2018 in China from production and use to eventual abandonment. The research shows that the metabolic scale of plastic in China is huge, and the influence of disposable plastic products on plastic metabolism is very large. Waste plastic is a very important direction for resource loss.
Empirical Study on Urban Waterlogging Data Governance Model Based on DID
Authors: Yan Chaohua , Chen Weike , Yang Yangyang , Dong Jing , Qiao Risheng 
Published: May 2021

Abstract
In this paper, 11 communities in Xiqing District of Tianjin are selected as the research objects. According to the data and information of drainage network during 2010-2020, the effect of urban waterlogging control after the application of data management model in 2016 is tested by using double check difference method. The empirical results show that the implementation of data governance model has a positive effect on reducing the vulnerability of urban drainage network and can improve the governance efficiency; It is advisable to take the fragility of urban drainage network as an important parameter in urban waterlogging control.
Fault analysis and maintenance of high voltage transmission line
Authors: Yi Ren 
Published: May 2021

Abstract
In recent years, with the continuous expansion of power transmission scale, high voltage transmission lines also began to appear. We can see that high-voltage transmission lines provide security for social development, at the same time, we can not ignore its later maintenance and management work. In the operation process of high-voltage transmission line, it will be affected by various factors and prone to failure, which will bring a certain impact on people’s life and production, and even directly threaten human life safety, health and property safety. High voltage transmission is a highly technical work, which is special in itself. If the technology can not keep up or the supervision is weak, it may lead to safety problems. External environmental factors will also significantly interfere with high voltage transmission. Therefore, it will focus on the analysis of high voltage transmission factors, operation characteristics and maintenance measures.
Influence of SnO2, ZnO and TiO2 layer on the performance of CIGS and CdTe solar cells
Authors: Zhan Pengcheng , Chen Jun , Chen Liangyan 
Published: May 2021

Abstract
As a type electron transmission layer, SnO2, ZnO and TiO2 layer were applied as a buffer between transparent conductive oxide and n-CdS layer in CIGS and CdTe solar cells. J-V curve of device with three different buffer layer were simulated theoretically through Poisson equation and electron-hole continuity equation. Open-circuit voltage, short-circuit current, fill factor and conversion efficiency were derived. It’s shown that for CdTe solar cells, performance of device with three kind of buffer layers SnO2, ZnO and TiO2 did not differ two much. While for the CIGS solar cells, device with TiO2 showed a small fill factor, then leading to a lower conversion efficiency. Transparent oxide SnO2 and ZnO were suggested for the buffer layer for optimization CIGS and CdTe solar structure depending on the art of manufacturing.
Effects of microbial agents on soil properties in greenhouse complex
Authors: Han Lin , Sergey Inshakov , Vladimirovich  
Published: May 2021

Abstract
In this experiment, four different amounts of microbial fertilizers of 10, 20, 30, 40 g were used as treatments, and the amount of no added microbial fertilizers was used as a control to study the effects of microbial fertilizers on the physical and chemical properties of soil. The measured soil physical and chemical properties include soil bulk density, soil pH, and organic matter content to obtain the optimal application amount of microbial fertilizer to improve the soil.
Effects of insect frass and distiller’s grains on physicochemical properties of saline alkali soil
Authors: Guo Xueqi , Zhao Baiying , Mao Zhiyue , Wang Xiaobo , Xu Xiaoyan 
Published: May 2021

Abstract
In this study, a pot experiment was conducted to study the effect of black soldier fly feces and distiller’s grains on the physicochemical properties of moderate saline alkali soil. Results showed that the application of insect feces and distiller’s grains significantly increased the contents of nitrate nitrogen, available phosphorus, available potassium and organic matter in the soil, and reduced soil pH. After the treatment of 2% insect feces mixed with 2% distillates, the available nitrogen content of saline alkali soil was the highest, which was 95.74% higher than that of the control. It can be seen that the combination of 2% insect feces and 2% distiller’s grains was best suited to improve the saline alkali soil properties under the condition of this experiment.
A Brief Overview of Texture and Anisotropy
Authors: Rollett Anthony D. , Gottstein Günter 
Published: May 2021

Abstract
A brief overview of the state of texture and anisotropy is provided with the motive of inspiring younger readers to engage in this topic. The International Conference on Texture of Materials ICOTOM has been active since 1969 up through the recent 19th meeting in Japan in 2021. The series initially focused on the problem of reconstructing three-dimensional orientation distributions from diffraction data which typically provided two-dimensional projections in the form of pole figures following the pioneering work of Bunge [1] and Roe [2]. In recent years, the advent of automated orientation mapping in the scanning electron microscope [3] and 3D mapping via synchrotron x-rays [4][5] has provided vastly more detailed data on texture and, crucially, has connected texture more closely with microstructure. Alongside this has been the development of simulation tools to predict texture formation and the anisotropic properties of polycrystalline materials. This has mostly been a accomplished via a mix of mesoscale models, e.g. [6], and more detailed methods that include microstructure. The latter are predominantly based on the finite element method complemented by the spectral method [7].
Analysis of the Effect of Parking on Road Bodies on Road Service Levels
Authors: Akbar M , Paresa J , Pamuttu D L 
Published: May 2021

AbstractThe city of Merauke is now one of the fastest cities in Papua Province. Along with the high urban accessibility, the city of Merauke is also included as a city with heavy traffic. Business Complex cannot be separated from the pull of traffic movement, often causing traffic jams, one of which is caused by the presence of illegal parking on the street (on-street parking). This research was conducted on primary road qualifications, namely the Mandala highway. The purpose of this study was to determine the level of road service and the degree of saturation and the effect of road performance services due to on-street parking. Research methods conducted include a volume survey with traffic counts and parking observations. The calculation uses the 1997 Indonesian Road Capacity Manual (MKJI). Based on the results of calculation traffic volume on weekdays during peak hours under normal conditions, the service level B (0.21-0.44). From the results of these calculations indicate that the performance of the Mandala Highway is classified as busy traffic. Whereas on weekdays with the condition that there is on-street parking, the service level decreases to C (0.45-0.74) in five hours during busy times. The results of this calculation indicate that the performance of the Mandala Highway will decrease by one level if there is parking on the road body (on-street parking).