bluuebunny/crossref_metadata_2025_split huggingface dataset:
The application of autonomous systems based on renewable energy sources in rural settlements of different regions of Russian Federation
Authors: Kostik Nikita , Bobyl Alexander , Terukov Evgeniy 
Published: November 2020

Abstract
The aim of the research is to analyze and determine the most perspective renewable energy source (RES) for autonomous off-grid electrification in small settlements (less than 500 people) of Russia. Three climate zones were investigated in the research – South region, Far East region, Central region where average summer insolation is 5,76 kWh/m2; 5,88 kWh/m2; 5,35 kWh/m2 and average winter insolation is 1,93 kWh/m2; 0,75 kWh/m2; 1,03 kWh/m2, respectively. Output power values were similar in all investigated regions, however the main economic impact comes from social-economic factors – regional fuel price, transporting costs, assumed to be 75$US/month and size of photovoltaic system – higher solar activity needs fewer PV cells to satisfy required load. Using simulating software, hybrid photovoltaic-diesel systems demonstrated various costs of energy (LCOE): 0.257$/kWh in Krasnodar region, 0,378$/kWh in Orenburg region and 0,4$/kWh in Irkutsk region. Higher solar activity during winter season in Krasnodar region that allows to reduce fuel consumption as well as LCOE. Increased solar activity also allows to reduce the number of panels required to satisfy the demand. These results was compared to diesel only generators. Krasnodar region generators LCOE was 1,19$US/kWh, Orenburg region generators LCOE was 1,13$US/kWh, Irkutsk region generators LCOE was 1,31$US/kWh. The investigation also shows the influence of the ecological factor on the utilization of renewable energy sources – decrease in fuel consumption from 6000 liters per year to about 250 liters per year as well as reducing the carbon dioxide emissions.
Cement-based materials with oil shale fly ash additives
Authors: Vatin Nikolai , Barabanshchikov Yurii , Usanova Kseniia , Akimov Stanislav , Kalachev Andrei , Uhanov Aleksandr 
Published: November 2020

AbstractExperimental studies on the influence of oil shale fly ash additives on thermal expansion, strength, shrinkage, and heat release of concrete were carried out. The addition of 30% fly ash over cement content increases the thermal expansion by 6 times. The addition of 40% fly ash increases the thermal expansion by 16 times. The expansion is due to the high free calcium oxide content (10%) in the fly ash and the high sulfuric acid anhydrite SO3content (10.3%). The anhydrite forms a highly expanding calcium hydrosulfoaluminate upon reaction with tricalcium aluminate cement in an unlimited amount of water. The oil shale fly ash addition above cement content significantly reduces shrinkage. If the ash content is higher, then the shrinkage decreases more. Shrinkage is on average 1.3 times less at a 30% fly ash content, and shrinkage is 1.8 times less at a 40% fly ash content. The fly ash has a higher sorption capacity than cement. Samples with the oil shale fly ash addition absorb more moisture than mixes without fly ash. Oil shale fly ash increases the compressive strength. If the fly ash content is 30% by weight of cement, then the compressive strength is higher than if the fly ash content is 40% by weight of cement for all concrete hardening periods. The flexural strength of mixes containing the fly ash turned out to be lower than the flexural strength of the mix without fly ash in the initial period of up to 15-22 days. Mixes with fly ash content in the amount of 30% and 40% by weight of cement exceeded the flexural strength of the mix without fly ash, respectively, by 24 and 17%. The fly ash addition provides a calmer, extended in time heat release with low self-heating of concrete in the initial period from 1 to 3 days. That is especially valuable for the thermal crack resistance of concrete.
Green spaces as indicator of air quality and mechanism for city’s environment stabilization in the Baltic region
Authors: Terekhina Natalia 
Published: November 2020

Abstract
Air pollution is one of the main environmental problem. And although average air pollution indicators in the Baltic region countries exceed limit values rarely, nevertheless, high pollution is present in some areas, damages ecosystems and public health. It is possible to use green spaces as one of the tools for cleaning atmospheric air. This article describes the scientific approaches to assess the cleansing function of urban plants. Particulate matters are considered as the main pollutant. Conclusions are drawn about the need to use an integrated approach that takes into account a number of characteristics of both plants and the ecosystems themselves, which allows solving the problems of environmental improvement in the cities of the Baltic region.
Faults Delicate Description Technology by Well-to-seismic Integration is applied to the Sabei Development Area of Daqing oil field
Authors: Jiang Jiajun 
Published: November 2020

Abstract
Due to the effect of faults, there are some problems such as the high oil wells ratios, and the partial incomplete injection-production relationship which effect the yield of the development in the west of Sabei Development Area that has a high content of oil. The effective method to improve the water-flooding control degree in densely faulted area is to further study the developmental morphology of fault area and improve the injection-production relationship. This passage combines the advantages of interpretation seismic data with high resolution and vertical plane strong data continuity, forming a technology of the description of well seismic combined with fault by breakpoint data logging boot, seismic trace, identify the properties of body, and carry out the verification of the interpretation results of well seismic combined with fault by dynamic analysis methods, implement the fault’s shape in the top surface of each reservoir group of the study area, and applied the guidance of research to guide the adjustment of injection-production system in the West of oil area, improve the injection-production relationship of complex fault zone, achieving a good effect of tapping the potential.
A new Production prediction model of staged fracturing horizontal wells for tight gas reservoirs
Authors: Li Xiaogang , Feng Zhengfu , Liu Changyin , Sun Zhiyu , Chen Qian , Yang Zhaozhong , Yuan Yijun 
Published: November 2020

Abstract
Numerical simulations have been frequently used to predict reservoir productivity and optimize the development scheme of non-conventional reservoirs. In this study, a new numerical simulation model of the gas flow based on the embedded discrete fracture model, which considers the start-up pressure gradient and stress sensitivity in the matrix system, is established. The proposed model is numerically solved and validated using the field production data. Based on the novel model, the sensitivity effect of the start-up pressure, stress sensitivity, and fracture layouts on production are considered. The results indicate the production of each fracture is distributed as U-shaped, the production of the outermost two fractures have the highest production.
Analysis of Jingyu Natural Mineral Water Recharge Mechanism
Authors: Zhang Nan , Shi Deyu , Wang Xue , Liu Bo 
Published: November 2020

Abstract
Jingyu county of jilin province is located in the core area of Changbai Mountain Nature Reserve. It belongs to the Changbai Mountain mineral water group and has a daily total flow of 151,000 m3. It is one of the most important mineral water producing areas in Northeast China and has nongfu spring, Evergrande ice springs, Master Kong and other well-known production bases. Therefore, it is of great significance to the local government and society to clarify the mineral water recharge mechanism in Jingyu Nature Reserve and ensure that the mineral water in the protected area is sufficient. In summary, in order to ensure the sustainable scientific development and utilization of mineral water in this area, this paper takes into account the local geological and hydrogeological structural characteristics, and uses the environmental isotope method to compare the hydrogen and oxygen isotopes of mineral water in the study area with atmospheric precipitation in the area. According to the isotope change law, the origin, formation conditions and recharge mechanism of the local groundwater were revealed. The conclusions are as follows: the main source of mineral water in Jingyu Nature Reserve is atmospheric precipitation, and the cycle time is 20 to 40 years.
Annual Variation of CO2 Absorption and Release in Xiangxi River of Three Gorges Reservoir
Authors: Yong-sheng Zhang , Hai-ying Li , Xu-Chun Ye 
Published: November 2020

Abstract
To analyze the annual variation of CO2 absorption and release in Xiangxi River of Three Gorges Reservoir, this paper set up six monitoring points in the Yangtze River and Xiangxi River to monitor CO2 emission flux at the air-water interface from July 2017 to June 2018 using static chamber method. During the investigation, this paper found that the variation rate of CO2 in the Xiangxi River averaged 0.67-2.14 ppm/min while the number for the Yangtze River was 1.07 ppm/min and 2.82 ppm/min respectively. The variation rate of CO2 was lower during water storage and higher during water discharge or in dry periods. The status of CO2 changed from absorption to release during water storage and vice versa during water discharge.
Study on oxidation desulfurization treatment of tail gas from large thermal power plants in Central Asia
Authors: Wang Liang , Zhang Chen 
Published: November 2020

Abstract
In recent years, Kazakhstan’s economic development has brought serious environmental problems. A large number of exhaust emissions are the important reasons for environmental pollution. Most of the tail gas emissions are due to coal combustion. In Kazakhstan, as many as 70% of large-scale thermal power plants will produce a lot of sulfur dioxide and other substances when burning coal, which will lead to acid rain and bring serious harm to the environment. On this basis, Kazakhstan continues to carry out research on desulfurization and denitrification technology of exhaust gas, so as to reduce the air pollution caused by exhaust gas. Combined with wind energy development technology, the oxidation desulfurization treatment method of power generation tail gas of large thermal power plants in Central Asia is studied in order to better purify the power generation tail gas and protect the environment.
Safety Test on the Regulating Gate of Fengtanggou Irrigated Area in Qixing Canal Ningxia Autonomous Region
Authors: Zhou Tao , Zhang Haijun , Xiao Jun , Ma Yu 
Published: November 2020

Abstract
In water projects, the water gate is widely used as a kind of construct to intercept water, discharge water or retain water. It is an essential measure to fulfill regular safety appraisal on the water gate so as to ensure the safe operation of sluice project. As of now, the regulating gate of Fengtanggou in Qixing Canal, Ningxia Autonomous Region has been in service for more than twenty years since its establishment. To obtain an overall comprehension of its operation status, as well as carry on thorough test on its safety, this paper introduced the tests on its concrete structure and metal structure, thus providing basis for the management of engineering operation.
Study on the strategy of adjustable potential of residential power load
Authors: Han Ninghui , Li Fei , Chen Songsong , Zhang Kai , Feng Jian 
Published: November 2020

Abstract
With the rapid development of power grid technology in China, the residential power load, as one of the most important load, is gradually penetrated by demand response. In this paper, residential users in low-voltage area are taken as the research object. Based on the classification of demand-side power load and the optimization objective of minimizing the comprehensive cost of residential users, a real-time demand response scheduling strategy is proposed, which is suitable for load aggregation and improves the participation of residential users. Under the condition that the user satisfaction is not affected as far as possible, the power consumption habit of the user is positively affected, and the expected load reduction target is achieved at the same time. The comprehensive power consumption cost of the user is effectively reduced, and the purpose of energy saving and peak and valley filling is achieved, so as to achieve the orderly power consumption of household energy.
Pollution Control and Resources Allocation: Optimization Path of Carbon Trading Efficiency Driven by Service Trade Enterprises Innovation
Authors: Yi Luxia , You Yucong 
Published: November 2020

Abstract
This paper subdivides and explores the mechanism of the role of standardization on international service trade enterprises from three dimensions and aspects, analysing and studying the three dimensions of the scale of international service trade, the combination of international service trade elements and the efficiency of carbon trading, optimization of resource allocation, together with the benefits of service trade. The research discovered and sorted out the mechanism of standardization to promote the efficiency of carbon trading of service trade enterprises and improve competitiveness: standardization and service trade enterprises low-carbon emission technology advancement; standardization and service trade enterprises carbon trading resource optimization allocation; standardization and service trade enterprises carbon trading information symmetry. Based on this mechanism, three paths are drawn to promote the development of carbon trading efficiency optimization and innovation of service trade enterprises through standardization, and the research combines the three traits of green, low-carbon and recycling in the current standardization of service trade enterprises in the new era and puts forward relevant suggestions.
Reconstruction of Seed Industry’s Value Chain in the Context of “Internet +”
Authors: Zhang Changlu 
Published: November 2020

Abstract
The Internet+ action plan was first proposed in the 2015’s government work report by Premier Li Keqiang. Then the integration of Internet and traditional industries accelerated with the appearance of O2O, Internet finance and so on. As a strategic and basic industry, the healthy development of seed industry was vital to ensure the food security. The paper tried to analyse the influence of Internet+ on each links of the seed industry’s value chain including research, breeding, producing, marketing and service based on the analysis of the characteristics of Internet+. In the end, the paper put forward the re-construction of the seed industry’s value chain including development, integration and optimization, which provided ideas for the healthy development of “Internet + seed industry”.
The analysis of replacing high-resolution terrain data forforecasting solar radiation in Wuhan, China
Authors: Hu Zaiming 
Published: November 2020

Abstract
This experiment uses the data from European Center for Medium-Term Weather Forcast and the mesoscale numerical model WRF to predict the total solar radiation in Wuhan in January, April, July and October 2018. During the experiment, the Aster global digital elevation model data was used as high-precision topographic data to replace, and two sets of data which are forecasted by WRF were compared with the observation data of Wuhan station. The experiment results show that the four-month forecast has a good correspondence with the observation station data, and which has passed the 0.01 significance test. Meanwhile, the simulation results in January were poor, and the simulation results in July and October were the best. After the improvement of replacing high-precision terrain data, the MAE and RMSE for 4 months have been reduced by 10-20W/m2, and both MAE and RRMSE have also been reduced by 5%-10%.
A least square matching optimization method of low altitude remote sensing images based on self-adaptive patch
Authors: Yang Nan , Zhang Yaping , Li Jialin 
Published: November 2020

AbstractThis paper presents a novel matching optimization method based on self-adaptive template. The proposed method is designed to be effective for enhancing the accuracy of stereo matching. In order to improve the similarity of the initial matching windows and fully exploit the pixels around the corresponding image points, a self-adaptive patch is introduced instead of a constant patch. Then, an error equation is built to compute the optimal point according to space geometry relationship and epipolar line constraint. At last, a least square adjustment method is used to calculate the coordinate of the corresponding 3D point in the Object Space Coordinate System. Comparison studies and experimental results prove the high accuracy of the proposed algorithm in low-altitude remote sensing image point cloud optimization.
Effect of ice load and freeze-thaw environment on seawall
Authors: Yang Lili , Wang Huan , Zhao Yue , Sui Haichen 
Published: November 2020

Abstract
Some ports in cold regions are affected by ice load and freeze-thaw cycles, and the stability of structures and foundations is affected. In this paper, based on a seawall project, through laboratory tests, the various indexes of foundation soil freezing of sea dike are tested, including frost heaving rate, frost heaving force, thawing compression coefficient of frozen soil, uniaxial compression test, shear test and bending test of frozen soil. By using the parameters obtained from the test results, a three-dimensional numerical model of seawall engineering under ice load and freeze-thaw action is established. The stress and deformation of seawall structure and foundation are simulated, and the safety and stability of seawall are comprehensively analyzed.
Analysis of Agricultural Water Use Efficiency in Shandong Province Based on DEA and Malmquist Model
Authors: Yuyu Liu , Jingjing Geng , Linlin Zhang , Xin Jiang , Yongfei Fu , Lin Lin 
Published: November 2020

Abstract
Water resource shortage has become a restricting factor for social and economic development. Improving water use efficiency of agriculture is an important way to alleviate water resource pressure and ensure food security. Based on DEA and Malmquist models, this paper calculated and analyzed the technical efficiency, scale efficiency and pure technical efficiency of agriculture using panel data from 17 cities in Shandong province from 2007 to 2017. Then, panel data of grains, beans, tubers, oils, cotton and vegetables were selected for the analysis of water use efficiency. The results showed that: (1) the water use efficiency of agriculture in Shandong Province increased year by year; (2) there are significant differences in water use efficiency of agriculture among cities; Qingdao, Jinan and Yantai are higher, while Dezhou and Heze are lower. (3) oil and cotton are the crops with the highest water use efficiency in agriculture in Shandong province. Under the premise of ensuring the required crop production, more oil and cotton can be considered to be planted.
Numerical simulation and pollution prediction of karst groundwater in water-conducting faults distribution area
Authors: Chu Jinglong , Liu Nannan , Miao Yu , Lin Xingjie , Tan Haiwei , Liu Fang 
Published: November 2020

Abstract
In order to explain the role of the water-conducting faults in groundwater system, this paper conducts a numerical simulation study of the groundwater system in water-conducting faults distribution area, using FEFLOW software. The influence of the fracture zones is considered as a key point in parameter zoning. The established numerical model of groundwater conforms to the actual hydrogeological conditions. At the same time, cyanide is used as the prediction factor to predict the situation of wastewater leakage into the fracture zones. The results show that the fracture zones are the main runoff channels for pollutant migration and diffusion. The pollutant migration and diffusion in the direction of the fracture zones are faster than that in the main runoff direction of groundwater.
Research on the Combination of Architectural Design and Internal and External Environment Planning Based on Small Building Space
Authors: Li Ming , Liu Qingbo , Li Xiaojing 
Published: November 2020

Abstract
People’s requirements for architectural space and function are getting higher and higher, so they need to strengthen their demands for functional technology and spatial structure in design to meet people’s behavioral needs in architecture. The impact of urban planning on urban space is macroscopic, lasting and decisive, while the impact of architectural design on urban space is local and concrete. As the main structure of a city, whether its design can be in harmony with the urban space of the whole city will directly affect the perception of urban residents. Therefore, designers must consider the internal and external layout when designing the buildings in order to fully meet the requirements and feelings of users. For small buildings, due to their small floor area, in order to meet the needs of people, it is necessary to divide and use the internal space carefully to meet the high-quality requirements of residents for living conditions. In this paper, based on the sociological perspective, starting from the urban internal functional structure, this paper analyzes the architectural design of small building space and the internal and external environment planning.
Case analysis of power quality impact assessment and governance of electrified railway based on ETAP software
Authors: Sun Feng , Zhang Guan-feng , Li Sheng-hui , Cheng Xu-ke , Wu Liang 
Published: November 2020

Abstract
As the traction load of electrified railway belongs to high-power nonlinear single-phase load, it will bring power quality problems such as harmonics and three-phase unbalance to the power system after being connected to the power grid, which is not conducive to the safety and economic operation of the public power grid. Therefore, it is necessary to evaluate the impact of the electrified railway operation under different conditions on the power quality of the system substation. In this paper, combined with an electrified railway transformation project of the power grid, an ETAP-based simulation model for electrified railway access to the power grid is established, which can quickly assess the power quality impact of the system-side substation caused by the traction load, and provide corresponding treatment measures for the electrified railway connection system program. At the same time, it can provide a basis for the electrified railway connection system scheme and equipment configuration.
Research on the current status and transformation strategy of digitalization at the State Grid Jibei Electric Power Company
Authors: Yue Hao , Li Wei , Yue Yunli , Pang Ya , Yang Jingang , Zhao Yunhao 
Published: November 2020

Abstract
Developing the digital economy and promoting the digital transformation of enterprises has been an important direction for the development of enterprises in various countries. This article systematically analyzes the information organization, communication network, digital platform, business application system, information security and information operation and maintenance status of the company in Jibei Electric Power Company. Based on the analysis of the development environment and advantages and disadvantages of digital transformation in Jibei Electric Power Company, the development strategy of establishing unified digital development committee, improving the digitalization ability of power transmission and distribution business, improving the digitalization capability of internal operation and building the toB terminal service platform of integrated energy services are put forward.