bluuebunny/crossref_metadata_2025 huggingface dataset:
Research on Priority Evaluation Model of Project Associated Clusters
Authors: Zhang Yuxi , He Yingjing , Zhu Keping , Fan Wei , Tan Zhongfu
Published: April 2021

At present, there are still some urgent problems to be solved, such as repeated reserve projects, unreasonable timing arrangement of investment in project execution, poor effect of capital use and poor process connection. In this paper, through the related cluster demonstration of the comprehensive plan projects, we strengthen the pre-management and control of the reserve projects from the source, and improve the quality and efficiency of the comprehensive plan management. Firstly, this paper classifies the projects based on the perspective of business association, establishes the association cluster, and then constructs the priority evaluation model of the project association cluster with the help of the portfolio management theory, so as to maximize the project benefit.
Analysis on the evolution of decision-making behavior of green operation and management subject
Authors: Cong Wang
Published: April 2021

In view of the current situation of high energy consumption and unsatisfactory energy-saving effect of existing large commercial office buildings, green operation management is applied to the operation and management process of existing large commercial office buildings. By constructing an evolutionary game model between owners and property management enterprises under market mechanism and government incentive, this paper explores the acceptance degree of owners and property management enterprises to green operation management under different circumstances, as well as their strategic choices and changing trends. Finally, the paper proposes that the government should actively play a leading role and encourage the development of green operation management.
Multivariate Grey Prediction Model with Priority Accumulation of New Information
Authors: Zhang Lanxi
Published: April 2021

According to the new information priority principle of grey system, this paper tries to optimize the traditional multivariate grey prediction model. Firstly, the basic theory of the traditional grey prediction model is put forward. Based on this, the background value is improved by using the new information priority principle, and the cumulative generation with parameters is defined. Taking the settlement trend of A4# building of an engineering project in Anhui province as an example, the model is applied to the settlement analysis, and the proposed model is compared with the existing grey prediction model, the average percentage absolute error between the predicted value and the observed value is calculated, and the regression graphs of each model are drawn. Through the analysis, we can see that the established model has achieved a good effect, and then verified the practicability and reliability of the proposed model.
Optimization of liner route allocation considering carbon emissions
Authors: Shen Yongcen
Published: April 2021

With the general awareness of energy and environmental issues in the whole society, the issue of greenhouse gas emission reduction has gradually become the focus of attention. Ocean transport undertakes more than 90% of the world's cargo transportation and also produces a large amount of carbon dioxide. In order to achieve carbon emission reduction in the shipping industry, in June 2012, the ECOFIN proposed to impose a Maritime Carbon Tax, which will increase the operating costs of shipping companies. In view of this, it is of great significance to consider carbon emission factors in the optimization of liner routes. This paper considers the carbon emissions of maritime transportation, establishes a mathematical model that minimizes operating costs such as maritime carbon tax, ship management fees, and fuel costs, verifies the effectiveness of the algorithm through calculation examples, and provides a plan for the carrier to make optimization decisions on liner route allocation.
Study on the Development Process and Improvement Countermeasures of Waste Classification in China
Authors: Li XiaoJun , Wang Ying , Xu Jin
Published: April 2021

In order to respond to the national ecological policy, to ensure the improvement of the urban ecological environment, the prevention and control of solid waste pollution, and the protection of public health and safety, the construction of ecological civilization is put in the primary development position. Therefore, the overall planning and reasonable deployment of the classified collection and treatment of urban domestic waste can effectively achieve the goal of secondary utilization of urban waste. The article has basically combed the history of garbage classification in my country, analyzed the problems existing in China garbage classification in the past, expounded the latest progress, and put forward some suggestions for the implementation of garbage classification in my country in the new era.
Stability analysis of green innovation in construction enterprises based on evolutionary game
Authors: Hu PeiPei
Published: April 2021

In order to conform to the trend of ecological economic development, the development of clean, energy saving, environmental protection of green new products has become the primary task of construction enterprises. Based on this, by establishing the game model between suppliers and manufacturers in the construction supply chain, this paper considers the influence of different parameters such as innovation cost, innovation compensation and innovation revenue increment on the choice of green innovation strategy of both enterprises. By solving the replication dynamic equation, the evolutionary stability results show that suppliers and manufacturers choose different decision-making methods according to the revenue, input-output results and the amount of green innovation subsidies given to each other.
Study on Sustainable Development of China’s New Energy Industry under the Background of Carbon Neutrality
Authors: Yuan Jian , An Yuxing
Published: April 2021

The latest McKenzie Global Energy Outlook predicts that by 2030, new energy prices will be lower than existing coal and natural gas prices in most regions; by 2035, new energy sources (solar energy and wind energy) will account for more than 50% of the world’s electricity generation. The global new energy industry will continue to accelerate in the future after years of its rapid development. Compared to the past, China’s new energy industry has become an important industry leader instead of industry followers a decade ago. However, under the past achievements and carbon neutral constraints, China’s new energy industry still needs to be strengthened and completed in the policies and regulations, absorption mechanism, technical research and development to promote the sustainable development of China’s new energy industry.
The influencing factors of gas-oil ratio in production were studied by numerical simulation method
Authors: Hongyan Liang
Published: April 2021

In recent years, the gas-oil ratio of LaSaxing Oilfield has been on the rise and the variation characteristics of gas-oil ratio of each plant are quite different. The high production of gas leads to the intensification of three-phase interference of oil, gas and water, and the poor fluidity of crude oil after degassing, which affects the overall development effect of the oilfield. Though the method of oil and gas water three phase numerical simulation, the conceptual model was established. Based on the model, analysing the change of producing gas-oil ratio by designing the scheme of numerical simulation under different factors points out the results——the formation pressure is the key factors influenced the producing gas-oil ratio change and the formation pressure level determines the trend of the producing gas-oil ratio. The results provide a technical support for oilfield production safety and the optimization of the ground production system, and achieve an important practical significance for oilfield sustainable development.
Multi-objective Optimization of Vertical Profile Trajectory for Civil Aircraft
Authors: Wang Suxiao , Shi Wei , Liao Yingjie
Published: April 2021

In order to further promote the sustainable development of civil aviation transportation industry, how to reduce the operating cost of civil aircraft has always been the focus of research. This paper establishes a performance optimization model of the aircraft on the vertical flight profile, which takes flight fuel cost and time cost as multi-objective functions and adopts energy state approximation method and optimal control theory. The trajectory of an aircraft in climbing, cruising and descent phases has been optimized using the established model and then simulated with the MATLAB software. The comparison results show that both fuel cost and time cost are significantly reduced through trajectory optimization.
Unmanned parking method based on cloud platform
Authors: Yu Liang , Jie Luo , Haoru Luo , Sijia Liu , Xu Yang
Published: April 2021

With the intelligent development of automobile driving, automatic parking technology is widely concerned by relevant technicians at home and abroad. Automatic parking technology is a method that can realize automatic parking in and out of parking Spaces without manual intervention. At present, automatic parking system has been equipped and used in many models, but there are many problems such as low parking accuracy and unable to effectively identify irregular parking Spaces. In order to solve the above problems, this article is based on a cloud platform developed a driverless car parking method, through the cloud server, GPS (Global Positioning System) and inertial navigation. It can according to the parking information and real-time Positioning planning adjustment path of the vehicle, and controls the complete vehicle posture adjustment, so as to improve the accuracy of parking and parking intelligent identification accuracy and ensure the safety and efficiency in the process of path planning. The effectiveness of the method is verified by simulation experiments with MATLAB software, which can be demonstrated by data.
Allocation Method for Carbon Emission Initial Allowance in Port Industry
Authors: Zhou Yiying , Jia Yuanming , Guo Weitong , Li Jing
Published: April 2021

Targeting issues in initial allocation of carbon emission allowance in port industry, this study puts forth a mixed allocation method that uses the baseline method for handling production allowance and the historical intensity method for auxiliary production allowance. This study clarifies the organizational boundary and operational boundary using this method, analyzes related factors, and provides the computational formulas. In the instance analysis, the specific calculation process of applying this method to specialized container terminal, specialized dry bulk terminal and general terminal, as well as the value method of basic data and correlation coefficient are given. Compared with the single use of historical intensity method or baseline method for allocation of allowances, although the operation of the mixed allocation method is relatively complicated, it not only considers the historical emission basis of the emission control enterprises, but also achieves a fairer and more reasonable performance by setting the baseline intensity of the loading and unloading production links. This research will help drive port companies to enter the carbon emissions trading markets as soon as possible, playing a promotive role in catalysing sustainable development of port companies.
Discussion on the relationship between power generation output of intermittent offshore energy and Marine Climate and Environment -- Taking wave energy and solar energy as examples
Authors: Zhao Lijie
Published: April 2021

In recent years, with the continuous promotion of China’s marine power strategy, the comprehensive development and application of marine resources in many aspects and in depth has become a trend. China’s South China Sea is vast and rich in resources, which has important national defense, economic and environmental significance for its comprehensive development and construction. The South China Sea is a vast sea area with abundant wave energy and solar energy. The pilot development and application of natural energy in this area is of great strategic and environmental significance for the decentralized power supply of deep-sea islands. Therefore, based on the actual application of the wave energy-solar power generation platform on YX Island, a comprehensive analysis is carried out based on the characteristics of the marine climate and environmental elements of the South China Sea, exploring the apparent efficiency of intermittent energy such as wave energy and solar energy under specific environmental conditions and putting forward relevant suggestions. The forecast will provide relevant theoretical basis and data support for the subsequent in-depth development, application and system optimization of renewable energy in the South my country Sea.
Optimization of AICD water control completion technology for horizontal well in bottom water gas reservoir
Authors: Zhang Guohui , Li Liangchuan , Rongchen  , Pengwang  , Zhang Guowen , Sun Jiewen
Published: April 2021

At present, adaptive inflow control (AICD) water-controlled completion technology is mainly applied to reservoir water control. In view of the gas reservoir AICD water control completion technology research is still blank, this paper carried out a suitable for gas reservoir water control water control mechanism of the new type runner AICD and flow characteristics analysis, X oilfield bottom water reservoir is established new port type AICD water control completion. The structure parameter combination of the new AICD was analyzed and optimized by orthogonal test, and the water control effect of the new AICD water control completion was analyzed. The results show that compared with conventional perforation completions, the new AICD controlled water completions cause little bottom hole pressure loss and have little effect on condensate production. New type runner AICD completion can prolong the bottom water reservoir water control in low yielding water gas recovery period of about 365 days, predict 20 years of accumulated water rate reduced about 27%, water saturation near wellbore area is generally lower, has good effect of water control. The new flow channel type AICD controlled water completion can be applied to the development of bottom water gas reservoirs to control water and stabilize gas.
Industrial Metabolism Analysis and Green Optimization of a Painting Production Line
Authors: Wenjie Lai
Published: April 2021

This article takes a coating production line as an example, uses industrial metabolism analysis method to quantitatively analyse its material metabolism process, and forms a material balance sheet to evaluate resource efficiency and environmental efficiency. The results show that the resource efficiency of the coating production line is 0.4%, and the environmental efficiency is 0.51%, indicating that there is a serious waste of resources and greater environmental pressure. The reason is the old spraying method, the use of highly volatile paints and cleaning agents, and the higher VOC content of the paint. In response to these problems, this article combines the input and output content of the production line and proposes several green optimization approaches from the perspectives of cleaner production, circular economy and ecological industrial parks.
Calculation Software and Safety Analysis for Live Working of ±800kV Qishao Ultra High Voltage Transmission Line
Authors: Wang Zhigang , Guo Hao , Qiao Mingming , Zhen Zhaohui , Li Peng
Published: April 2021

In the power system, live workers need to complete various tasks such as heat treatment of the draft plate in a strong electric field. The inaccurate estimation of the wire load increases the labor load of the operators and can cause safety accidents such as wire disconnection and grounding short-circuit. This paper proposes a set of simple and easy-to-use live working mechanics calculation software to assist the dynamic analysis of the live working load of transmission lines, rationally select working tools, and improve the safety of live working.
Research on simulation and test analysis of hydraulic transient process in Jinping II Hydropower Station
Authors: Chun-jian Cao , Jie Fang , Shun-yi Chen , Jing-qian Huang
Published: April 2021

The paper takes Jinping II Hydropower Station (8 × 600MW) as an example based on the internal mechanism and operating characteristics of the system, the complete simulation model of the super-long and large water diversion and power generation system has been completed finally.Besides, the method of parameter calibration and correction for the main elements of the system is proposed.By the simulation model, two typical hydraulic transient process test conditions are simulated, here the involved test conditions are as following: double load rejection and primary frequency regulation.At the same time, the calculated results are compared with the test results. The results show that the proposed simulation model can describe the dynamic response characteristic of the super-long and large water diversion and power generation system accurately.
Fire simulation and smoke spread analysis of subway stations at different fire locations
Authors: Linlin Yuan , Mo Yang
Published: April 2021

In order to explore the law of smoke spread in the fire environment of an island-style subway station, this article takes an island-style subway as the research object. Based on the fire dynamics, pyrosim is used to establish a subway fire model to observe the smoke concentration and temperature changes under different fire locations. The study found that when the fire source is at the end of the platform layer, the flue gas concentration of the farthest evacuation channel and safety exit reaches 80% at 85s and 130s, respectively, and the flue gas temperature at the nearest exit and the farthest exit are at 32° and 28° respectively. When the fire source is in the middle of the platform layer, the smoke concentration of the evacuation channel and the safety exit reaches 80% at 70s and 105s respectively, and the temperature of the smoke at the exit exceeds 40°.
Research and Application of Special Control Procedure Management for Construction Safety
Authors: Li Jinhui , Yuan Minmin , Shang Xiaodong
Published: April 2021

A very important factor in production safety accidents caused by engineering construction is that the approved plan has not been effectively implemented. Therefore, cracking the plan and implementing the two-skin is an important issue for engineering construction safety management to be solved urgently. This article takes the construction of the NanSha Bridge as a case, and for the more dangerous sub-projects, the premise is to ensure the construction period, quality, safety and environmental protection goals, and meet the basic requirements of norms, safety, environmental protection, and soil and water conservation. The risk should be systematically assessed, and targeted avoidance and preventive measures should be formulated, and the definition and characteristics of the special control process acceptance management method and the control points and processes in the implementation process should be studied. Using special control process management, the NanSha Bridge adopts special control process acceptance management procedures for dangerous sub-projects, which solves the problem of process acceptance or safety inspection and acceptance. In the past, only the quality inspection department or safety department personnel participated. The shortcomings of inspection or acceptance require that the main control focus of each special control process inspection is consistent with the actual project. Through the special control process acceptance work, the hidden dangers can be found in advance and rectified and eliminated in time before the next step of construction. The hidden dangers are truly eliminated in the bud and the consistency between the approved plan and the actual implementation can be effectively guaranteed. Through special control process management, the dangerous sub-item project plan is truly implemented, avoiding the phenomenon of two skins in the approval plan and implementation, which has high reference significance for similar projects.
Marine embankment slide and reinforcement simulation based on discrete numerical method
Authors: Hai-feng Xiu , Zhuo-qi Sun , Zun-bang Xi , Guo Li
Published: April 2021

Hybird discrete numerical methods inclusive of DEM and XFEM were developed in the study to simulate the marine embankment slide in Zhejiang coast. The study derived the comprehensive fields that included the displacement, stress, internal forces and reliality factor. Therefore, the typical marine embankment slide simulation and reinforcement effect evaluation were completed. The methods and results were helpful for the marine embankment cases.
Optimization of berth length of LNG terminal
Authors: Wang Yuchen
Published: April 2021

Based on the multimodal transport mode of LNG container, it is suitable for transportation, storage and land, and it can realize safe, high efficiency and convenient transportation, and meet the needs of modern LNG transportation. This paper discusses the change trend of LNG terminal berth length which has been built in recent years. The research progress of berth length optimization method of LNG terminal in China is described. The comparison analysis is made with the berth length optimization method of open oil and gas terminal, and some suggestions are put forward.
Research on the integration of ideological and political education into the curriculum design of landscape architecture
Authors: Ma Lin , Zhang Junxia , Jia Yanyan , Liu Bing
Published: April 2021

The ideological and political construction of curriculum is the inevitable requirement to improve the quality of forestry talent training. The concrete contents of ideological and political teaching design including teaching goal, teaching method, teaching content design, teaching characteristics and teaching summary are expounded and three aspects of further optimization are put forward. Taking the ideological and political construction of the curriculum as an opportunity, based on the professional characteristics and discipline development, it provides reference for the ideological and political construction of the landscape architecture specialty curriculum.
Application analysis of shale gas core hyperspectral in weican-1 well
Authors: Pengfei Liu , Peng Tong , Yinjun Zhao , tianxu Guo , hongda Zhang
Published: April 2021

Hylogger core scanning system is used to detailed scan shale gas drilling cores, obtaining visible-near infrared (spectral range 380nm-1100nm),short-wave infrared (spectral range 1100nm-2500nm) spectral curves and high-definition core images. Taking Well weican 1 in the West Taikang Uplift in the South China North Basin as an example, based on the analysis of clay mineral types in the core of the target layer, it is judged to be an alkaline deposit environment rich in iron and magnesium with a temperature of about130°C. Combined with mineral information and core image, the core of the target layer is divided,mud shale is developed, the cumulative thickness exceeds 400m, the maximum single layer thickness reaches 38m, at the same time, the hydrocarbon absorption characteristics of the shale section are obvious, it shows a good prospect for shale gas in the region.
Research on Safety Risk Assessment Method of Highway Bridge Construction Based on AHP-Fuzzy Comprehensive Evaluation
Authors: Guofeng Zhuang
Published: April 2021

The quality of road and bridge engineering is directly related to the safety of the transportation industry. In the construction of highway bridges, it is particularly important to strictly control the construction quality. Combining the analytic hierarchy process and the fuzzy comprehensive evaluation method, the AHP-fuzzy comprehensive evaluation method is used to obtain the current road bridge construction safety risk level. According to the different risk levels, effective measures should be taken to avoid unsafe accidents. On this basis, historical risk cases can be analyzed to find problems in the safety assessment of highways and bridges, and effective construction safety management and control measures can be put forward to ensure the vigorous development of my country’s highway and bridge industry.
Sediment risk analysis of urban drainage pipeline
Authors: Li WenPing , He WeiYi , Xu Jin
Published: April 2021

The urban water body is an important part of the urban infrastructure, and the urban drainage pipe is the core part of the urban water system, however, heavy metals and nutrients such as nitrogen and phosphorus in the sediments of urban drainage pipes have some risks, so it is important to analyze the risk of sediments in urban drainage pipes. This paper analyzes the risk and harm of sediment in drainage pipeline from three aspects: human health, water ecological safety and water environmental quality, it will lay a foundation for further study on the risk of sediment in drainage pipeline to water environment.
Unsaturated seepage and stability of double-layer slope under rainfall infiltration
Authors: Zhang Yuan , Lu Haifeng
Published: April 2021

Taking a homogeneous double-layer soil slope as an example, the SEEP/W module and SLOPE/W module in the finite element analysis software GeoStudio were used in this paper. Then, the changes of pore water pressure and stability under different rainfall patterns and soil parameters were studied. Finally, the variation curves of pore water pressure and slope safety factor with rainfall time were obtained. The results show that: Soil parameters a and m are directly proportional to the slope safety factor, while n is inversely proportional to the slope safety factor. Under the condition of continuous rainfall, the decreasing rate of slope safety factor is directly proportional to the rainfall intensity.Under different rainfall patterns, the continuous rainfall in the advanced and normal rainfall patterns will cause the slope stability to decline and then gradually recover, while delayed and averaged rainfall patterns rainfall will cause the slope stability to decline continuously.In addition, there is a lag period in the change of slope safety factor, and the whole lag period lasts about 6 hours. During the lag period, the pore water pressure inside the soil began to decrease, while the slope safety factor continued to decrease. The safety factor starts to recover after the lag period ends.
Research on the development and technology selection of green building in China
Authors: Yi-hong Wang , Xiao-nan Lian
Published: April 2021

This paper collects the previous data of green building in China and divides the different development stages of green building in China. The paper collects the existing data of green building in China, and expounds the development status of green building in China from different perspectives. In addition, the selection of green building technology in China is investigated, summarized and analyzed to find out the problems in the practical application of different technologies and put forward solutions, so as to obtain the suitable reference for the selection of green building technology in China.
Some Thoughts on Treatment of Tunnel Diseases in High Altitude and Cold Regions
Authors: Zhu Cun Fang , Kun Wang , Wang LuShi
Published: April 2021

Tunnels in high-altitude areas in our country have a wide distribution range and a large number. Due to factors such as complex engineering geological conditions and harsh operating environments, tunnels often face severe freezing damage during operation. The freezing damage of tunnels in cold regions often seriously threatens the safety of vehicles. The service level of the tunnel also decreases. This article reviews the typical diseases and manifestations of tunnels in cold regions, this paper analyzes the main causes affecting the freezing damage of tunnels, and finally introduces the common treatment measures for several common diseases of tunnels in cold areas with high altitude, summarizes the main problems of existing treatment measures, and puts forward corresponding improvement measures, which can provide guidance for similar treatment.
Research on Innovative Practice of Civil Engineering Construction Technology
Authors: Hai-chao Li
Published: April 2021

Nowadays, my country’s economy is developing faster and faster, people’s living conditions are gradually improving, and people’s requirements for the quality of life are also improving. Housing is a place where people often come and go. The quality of housing is related to people’s daily life safety and also affects economic development. Therefore, the construction industry should pay attention to the improvement of the quality of housing and provide people with high-quality housing construction. For civil engineering, on the basis of ensuring the quality, the construction unit needs to fully consider the economic benefits, so that the construction unit can achieve quality and cost reduction. In order to ensure that the quality of civil engineering meets the standards proposed by the country, the construction unit needs to plan the details of the building in detail during the construction process and adopt standardized construction techniques. Therefore, this article will conduct an in-depth analysis on the innovation of civil engineering construction technology, so as to facilitate the reference of relevant construction units.
Study on strata behavior law of deep inclined coal seam
Authors: Zhengwen Chen
Published: April 2021

In order to understand and grasp the law of roof pressure on the working face of deep inclined coal seams, the law of support resistance distribution, the law of leading support stress distribution and the law of surrounding rock deformation of the two roadways, the 94101 working face of Zhangshuanglou Coal Mine was taken as the engineering background. Through a combination of field measurement, numerical simulation, theoretical analysis, etc, this paper analyzes the laws of roof migration and rock pressure manifestation in deep inclined coal seams.
Research on the Strategy of Tianjin Port Container Sea-Rail Combined Transport
Authors: Song Tiantian
Published: April 2021

Tianjin Port has 3 container sea-rail combined transport channels leading to inland ports, and it is one of the intermodal transportation nodes of my country’s “One Belt One Road” key construction. This paper introduces the development status of Tianjin Port’s container sea-rail combined transport, uses SWOT to analyze the strengths, weaknesses, opportunities, and threats of the development of Tianjin Port’s sea-rail combined transport, and proposes optimization strategies on this basis.
Application of displacement synchronization automatic control jacking technology in upgrading and reconstruction project of super large aqueduct of South-to-North Water Diversion Project
Authors: Wu Bo , Chen Xiaolu , Zhao Mingqin , Yang Xiaomin , Zhou Zhiyong
Published: April 2021

Jack-up technology is widely used in aqueduct reconstruction projects. In this paper, a self-developed displacement synchronous automatic control jack-up technology is introduced for the upgrading and reconstruction project of super large aqueduct in South-to-North Water Diversion Project. A new large span aqueduct jack-up construction technology is proposed and studied, and the key technologies of different heights of the aqueduct are discussed. During the jack-up reconstruction of the Lihe Aqueduct from Taocha Canal Head to Shahenan Canal Project in the first phase of the middle route of the South-to-North Water Transfer Project, the overall synchronous lifting of the aqueduct body was achieved by 72 cm, and then the aqueduct body was dropped proportionally. Finally, the jack-up reconstruction of the entrance section of the Lihe Aqueduct was achieved by 50 cm, and the exit section was not jack-up, and the middle section showed a linear change. The research results have a certain reference value for the reconstruction projects of similar structures with different heights at both ends.
Informatization evaluation of water conservancy project construction management based on AHP fuzzy comprehensive evaluation method
Authors: Meng Lingqing
Published: April 2021

With the development of network technology, information evaluation gradually began to be used in all walks of life. As an important part of information construction, water conservancy informatization has developed rapidly. In order to accurately evaluate the degree of water conservancy informatization construction, the index system of water conservancy project construction management informatization is established by analytic hierarchy process, and the evaluation model of water conservancy project construction management informatization is obtained by combining fuzzy evaluation method. The evaluation model is used to comprehensively evaluate the degree of water conservancy informatization construction in a certain area, and it is found that the degree of water conservancy informatization in this area is good, and the evaluation results are consistent with the actual situation in this area. The evaluation grade of each evaluation index in the index system is determined, and some suggestions are put forward to promote the balanced and stable development of water conservancy informatization in this area, so as to provide reference for the evaluation of water conservancy informatization in other areas.
Big Data Analysis Guides Landscape Architecture Method Research
Authors: Ma Li , Liu Fangxiao , Wu Lingjiao
Published: April 2021

In the construction of urbanization, landscape architecture is the only kind of ecological construction with life, and it has an irreplaceable role in urban development and human landscape. The construction of urban landscape gardens can not only improve the ecological environment in the city, but also achieve the functions of purifying the urban air and beautifying the appearance of the city. However, considering the current situation of garden construction, there are not only many types of problems, but also large and complex problems. At the same time, its design concept and construction plan still stay in the traditional consciousness. The development of various industries today requires the integration of big data. In the context of the era of big data, data life has gradually penetrated into people's lives. Big data is not only a product of the development of social science and technology information, but also an inevitable trend of industry development. It can not only promote the construction of urban development, but also has great significance for social progress[1]. Therefore, the construction and design research of landscape architecture needs to combine the analysis of big data, and use the advantages of big data to promote the construction of gardens to be more complete, reasonable and humane.
Design of multi node CAN bus in high frequency system
Authors: Lei Zhang
Published: April 2021

In order to ensure the reliability of multiple nodes CAN bus in high frequency system, we need to find the design method of CAN bus. In this paper, we rely on the test platform to carry out tests and summarize the design method of elimination high frequency system.
Engineering ethics of BIM and big data application in civil engineering
Authors: Xing Jian Peng
Published: April 2021

As the second biggest economic entity, China is conducting the largest fundamental construction in the world. Architectural engineering is an important part of fundamental construction and China is witnessing its biggest construction industry in the world. With continuous scientific and technological development, China has stepped in the big data era, which produces higher requirements for architectural and civil engineering industry. Digital engineering construction technology, such as BIM technology, effectively improved design, construction, operation and maintenance of BIM technology, effectively improved the design, construction, operation and maintenance technology and quality of large construction projects. For the time being, China is encouraging engineering application and promotion of BIM technique in engineering construction industry. Fast scale enlargement and technical innovation not only produce new opportunities for change of construction industry, but also put forth strict requirements for engineering ethics in architectural and civil engineering construction.
Analysis of Key Points of Anti-Seepage Technology in Hydraulic Engineering Construction
Authors: Guoyong Pan , Yixin Chen
Published: April 2021

The water conservancy project is an important infrastructure to ensure people’s living standards, which is reflected in the protection of people’s lives and property by effectively resisting floods. The anti-seepage technology plays a significant role in affecting the construction quality of water conservancy projects. Under the current strong supervision of water conservancy projects, relevant personnel should pay more attention to the application of anti-seepage technology. From the perspective of actual engineering practice, this paper analyzed the importance of anti-seepage technology, sorted out the causes of leakage, and specifically explored the implementation points of anti-seepage technology in water conservancy project construction.
Study on the performance evaluation and prediction model of self-compacting concrete in steel shell immersed tube
Authors: Shenyou Song , Fang Yu , Wenguang Chen , Jinjun Xu , Jiaqi Zhao , Zhihong Fan
Published: April 2021

In order to study the quality control and evaluation methods of self-compacting concrete (SCC) pumping process in Shenzhen-Zhongshan Bridge and similar projects, sample test is performed on self-compacting concrete mixture collected from the pumping field of the E1-E4 steel shell immersed tube; Then a database base on relationship between the variation parameters and the target performance is established. On this basis, the Grey system theory is adopted to analyze the parameter sensitivity of the SCC pumping performance to the different kinds of variables. The results show that variables are related to target performance and some of the variables have a significant influence. Using the powerful data mining capability of support-vector machine and Bayesian statistical inference in the case of uncertain exact mathematical relationship between independent variables and dependent variables, implicit and explicit prediction models of variation of SCC pumping performance are respectively established by pumping distance, number of elbows, pumping time and environmental temperature as the control parameters. Finally, the comparisons between the measured data and calculation result prove that both models have good prediction accuracy and stability.
Velocity and turbulence affected by various vegetations in open channel
Authors: Sun Zhilin , Meng Xin , Zhou Yubao
Published: April 2021

Water energy is a conventional source of source that is widely available in nature. It can be easily converted into high quality secondary energy-electric energy through hydroelectric power stations. Hydropower is not only a widely used conventional energy source, but also a renewable energy source. Moreover, hydroelectric power has no pollution to the environment. Therefore, water energy is an inexhaustible and high-quality energy source among many energy sources in the world. However, vegetation can change flow structure and turbulence characteristics, impacting the use of water energy. In previous researches, few studies have focused on the comparison of velocity and turbulence influenced by various vegetations. Therefore, laboratory experiments were carried out to investigate hydrodynamics affected by submerged rigid vegetation (reed and wooden stick) and merged flexible vegetation (grass and chlorella) under different conditions. The time-averaged velocity distributions of planted floodplain are not logarithmic. Instead, reed and wooden stick followed an “S-shape” profile, but for grass and chlorella, they presented reverse S-shape profile. For all cases, turbulence is not isotropic and the change law of turbulence intensity is different in different sections.
Development Status and Thinking of Passive Building in the Yangtze River Delta Region
Authors: Shang Weicheng , Wang Bojun , Yang Yanping
Published: April 2021

Passive building is a kind of building that can use natural way to reduce energy consumption on the premise of satisfying indoor comfort. The characteristics of energy saving and emission reduction can solve the problem of energy shortage, which is the future development trend of buildings in the Yangtze River Delta region. However, the popularization of passive architecture in the Yangtze River Delta region is relatively slow in recent years. This paper analyzes its development status and influencing factors, and puts forward some suggestions to provide some reference for promoting the explosive development of passive buildings in the Yangtze River Delta region.
Finite Element Analysis of Concrete Damage in Sticked Side-plated Reinforced Concrete Beam
Authors: Huang He , Zou Chuanlong , Liang Xiaoguang , Chen Shan , Li Mingmao
Published: April 2021

In order to study the concrete damage in sticked side-plated reinforced concrete beam under static load, a common reinforced concrete beam and a sticked side-plated reinforced concrete beam were designed to conduct finite element comparison experiments. The results show that compared with ordinary reinforced concrete beams, the bearing capacity of sticked side-plated reinforced concrete beam is significantly improved, and the range of concrete tensile damage is significantly reduced. It further verifies that the sticked side-plated reinforced method is effective in reducing concrete tensile damage.
Nickel and gold identification in p-type silicon through TDLS: a modeling study
Authors: Dehili Sarra , Barakel Damien , Ottaviani Laurent , Palais Olivier
Published: April 2021

In Silicon, impurities introduce recombination centers and degrade the minority carrier lifetime. It is therefore important to identify the nature of these impurities through their characteristics: the capture cross sectionσand the defect levelEt. For this purpose, a study of the bulk lifetime of minority carriers can be carried out. The temperature dependence of the lifetime based on the Shockley-Read-Hall (SRH) statistic and related to recombination through defects is studied. Nickel and gold in p-type Si have been selected for the SRH lifetime modeling. The objective of the analysis is to carry out a study to evaluate gold and nickel identification prior to temperature-dependent lifetime measurements using the microwave phase-shift (μW-PS) technique. The μW-PS is derived from the PCD technique and is sensitive to lower impurity concentrations. It has been shown that both gold and nickel can be unambiguously identified from the calculated TDLS curves.
A research on aerodynamic characteristics of non-pneumatic tire
Authors: Li Hong , Xu Yilun , Si Chenlong , Yang Yong
Published: April 2021

Application of non-pneumatic tire (NPT) has been increased during the last decade. The aerodynamic characteristics of the wheel with NPT has been studied due to significance on improvement of handling and reduction of fuel consumption. In this paper, first, an original NPT model was simulated by CATIA software, and the influence of NPT structural parameters on aerodynamic characteristics was studied by Fluent software. The simulation calculation results showed that: the reduction of tire width and spoke length, and the increase of spoke thickness can effectively decrease aerodynamic coefficient. Then, the MIRA model was used to study the influence of NPT on aerodynamic characteristics of the whole vehicle under driving conditions. Studies showed that: NPT increased the resistance of the whole vehicle, and 63.1% of the resistance at the wheels was provided by the front wheels. Finally, the wind tunnel test was conducted to study aerodynamic characteristics of the optimized NPT model under static conditions and verify the simulation calculation.
Analysis of longitudinal vibration acceleration based on continuous time-varying model of high-speed elevator lifting system with random parameters
Authors: Zhang Qing , Hou Tao , Jing Hao , Zhang Ruijun
Published: April 2021

In this paper, for studying the influence of the randomness of structural parameters of high-speed elevator lifting system (HELS) caused by manufacturing error and installation error, a continuous time-varying model of HELS was constructed, considering the compensation rope mass and the tension of the tensioning system. The Galerkin weighted residual method is employed to transform the partial differential equation with infinite degrees of freedom (DOF) into the ordinary differential equation. The five-order polynomial is used to fit the actual operation state curve of elevator, and input as operation parameters. The precise integration method of time-varying model of HELS is proposed. The determination part and the random part response expression of the longitudinal dynamic response of HELS are derived by the random perturbation method. Using the precise integration method, the sensitivity of random parameters is determined by solving the random part response expression of time-varying model of HELS, and the digital characteristics of the acceleration response are analyzed. It is found that the line density of the hoisting wire rope has the maximum sensitivity on longitudinal vibration velocity response, displacement response and acceleration response, and the sensitivity of the elastic modulus of the wire rope is smallest.