bluuebunny/crossref_metadata_2025_split huggingface dataset:
Underwater topography survey and precision analysis based on depth sounder and CORS-RTK technology
Authors: Song Fucheng , Gong Shumin , Zhou Ruichen 
Published: April 2020

Abstract
Underwater topography survey is a basics part of hydrological research, and plays an important role in the development of resources in marine lakes and inland rivers. In this paper, the water depth was measured in some waters of Linyi Beng river by using Real time kinematic (RTK) based Qianxun Continuously Operating Reference System (CORS) services and depth sounder, and the underwater topographic map was obtained. In order to test the accuracy of underwater topographic survey, some of the checkpoints were simultaneously observed by the traditional sounding rope method, and the sounding accuracy of these checkpoints was analyzed. The results show that the average accuracy of the sounding with the CORS-RTK+ sounder is 0.12m, compared with the traditional method, which satisfies the accuracy requirements of underwater topography. On this basis, the items that need attention during the practical sounding are given. The above research results can provide a technical reference for underwater topography survey.
The characterization method and effectiveness research for crack parameters in Tight Sandstone Reservoir
Authors: Long Yuan , Husong Ling , Qian Wang , Siyi Wu , Chuang Han , Bin Yu , Cai Chen , Fan Yang 
Published: April 2020

Abstract
When natural cracks in oil & gas development of tight sandstone remain valid, effective crack degree is the decisive factor of reservoir enrichment and high production. Taking the reservoir of the Bashijiqike Formation in Kuqa depression, Tarim Basin as an example, the crack parameters were characterized by a mathematical model and algorithm, which lays a theoretical foundation for the study of crack validity. According to crack parameters processed by electric imaging and static modulus date of rock mechanics, control conditions that constrain crack development such as crack permeability, the normal stress on crack surface and the angle between maximum principal stress and crack strike were obtained. In addition, quantitative expressions between constraints on crack development and productivity were established and the main control factors of fracture validity were confirmed. In the end, the crack development degree and effectiveness were comprehensively evaluated.
Hydroclimatic and geothermal controls of lithium brine deposits on the Qinghai-Tibetan Plateau
Authors: Gao Chunliang , Yu Junqing , Min Xiuyun , Cheng Aiying 
Published: April 2020

Abstract
The paper focused on the distribution characteristic, material source and ore-forming mechanism of lithium brine deposits on the Qinghai-Tibetan Plateau, and established the lithium brine deposit model. The results showed that all lithium brine deposits are controlled by the Neotectonics, enclosed/semi-enclosed low catchment basin and hyper-arid climate conditions, and related to the Cenozoic hydrothermal activities. The ore-forming materials especially lithium element are derived from volcanic rocks, which migrated and concentrated after water-rock interaction by hydrothermal springs and atmospheric precipitation.
Hoisting beam construction technology for Moon Bay Bridge
Authors: Yang Minghu , chen Lu , Liu Yuancai 
Published: April 2020

Abstract
In the construction of the main beam of the PC plate type stiffening beam suspension bridge, the problem of stiffening beam hoisting construction, combined with the Moon Bay Bridge, introduces the hoisting construction of the stiffening beam. The bridge is equipped with a lifting platform and a cable hoist is used to hoist the stiffening beam. The problems in the field tension construction were introduced. The hoisting of the Moon Bay Bridge was successfully completed, and its construction method can provide reference for similar bridge construction, which has certain reference significance.
Effect of diatomite with different morphologies on the purification guide performance of formaldehyde in Jilin Changbai area
Authors: Liguang Xiao , Hongyang Kou , Xixu Liu 
Published: April 2020

Abstract
In this paper, diatomite with different shapes (discoid, cylindric and scaphoid) was purified and characterized by SEM and BET. Then diatomite purification materials were prepared and formaldehyde adsorption test was carried out. The results showed that the pore structure of the purified diatomite was improved and the impurities were eliminated effectively. At 48 hours, the formaldehyde purification rate and the formaldehyde purification persistence rate of the diatomite purification materials with different shapes were different. The purification rate of the discoid diatomite purification materials to formaldehyde was 76.67%, the formaldehyde purification effect lasted 58.18%, the formaldehyde purification rate of the scaphoid diatomite purification materials was 85.45%, and the formaldehyde purification effect lasted 69.83%, the formaldehyde purification rate of cylindric diatom purification material is 88.89%, and the lasting rate of formaldehyde purification effect is 77.10%.
Analysis on project management of military barracks in high altitude area
Authors: Liu Chang , Xiao Bin , Wang Weijie 
Published: April 2020

Abstract
The construction conditions of engineering projects in high altitude areas are poor, the construction period is short, the transportation distance is long, the natural environment is bad, and the buildings are seriously damaged. The application of mature construction technology is greatly restricted. The contradiction between engineering construction and environmental protection is extremely prominent. The project management has special geological conditions, harsh natural conditions, short construction time, lack of technical equipment, weak support force and lack of information technology. It is necessary to strengthen the organization and management, do a good job in planning and design, scientific organization of construction, strict process supervision, optimization of personnel, application of information technology, and improve the quality and efficiency of management of military barracks project in alpine and high altitude areas.
Electromagnetic scattering from perfectly conducting periodic rough surfaces using discrete two-level complex images method
Authors: Li L , Xu J 
Published: April 2020

Abstract
The one-level complex image method is only useful in deriving the spectral-domain Green’s function at low frequencies. In this paper, a two-level complex image method is proposed to derive closed form periodic Green’s function at high frequencies for problem of scattering from perfectly conducting periodic surfaces. The remaining quotients in the spectral domain are approximated by a finite series of exponential using the Generalized pencil-of- function method. The approximation is performed along the two-level path, with this scheme the contribution beyond T0 has been considered and it will give accurate results over a wide frequency range. The results are compared with those obtained by the spectral Kummer- Poisson’s method and good agreements are observed. Also the complex image method is more computational efficient.
Main Structure Design and Constructional Safety Control of Large-span Gravel Surrounding-Rock Tunnel
Authors: De-kang Li , Hao-ran Li , Zuo-lin OuYang , Zhi-guo Yue , Yan-dong Dong 
Published: April 2020

Abstract
As the construction of large-span gravel surrounding-rock tunnel is very difficult which has serious security risks, it is significant to choose a set of reasonable structure design methods and safety control schemes. This paper taked a large-span gravel road tunnel in Jinan Expressway as an example. Through combining theoretical analysis with numerical simulation, the main structure design process of the large-span IV level surrounding-rock tunnel was divided into four steps, meanwhile concrete measure basis and testing methods were given. According to the engineering geological conditions and the structure design schemes, the construction schemes and monitoring measurement projects of large-span gravel surrounding-rock tunnel were determined to ensure the safety of tunnel construction. This paper provides a complete example scheme for the design and construction of the main structure of the large-span IV class surrounding-rock tunnel, which provides a reference for similar projects in the future.
Application of Projection Pursuit Model to Water Resources Carrying Capacity Assessment in Longitudinal Ridge-gorge Region of Yunnan
Authors: Chen Jinming , Gu Shixiang , Du Xuanxuan , Chen Gang , Hong Jinshu 
Published: April 2020

Abstract
Water resources carrying capacity (WRCC) assessment is an effective way to evaluate the coordinated development of water resources, economic society and ecological environment, thus, it is significant to study WRCC to realize the harmony among water resources, economy and society in region. In this paper, an index system for evaluating WRCC was constructed from the perspective of water quantity and water quality. Moreover, the projection pursuit technique was applied to evaluate WRCC. Based on the grade division standard of WRCC, the projection function which could reflect the variability of the WRCC was constructed, and genetic algorithm was introduced to optimize the function and seek the optimum projection vector, while the projection pursuit model to evaluation of WRCC was built by the data of the vector. WRCC of the 80 counties in Longitudinal Ridge-gorge Region of Yunnan was evaluated by this model, and the results which accord with the fact were gained. The result showed that WRCC is dynamic with evaluation index value was presented as the logistic curve. The WRCC in research region was good overall, but that in three counties and four counties was already in overload and nearly overload, respectively. Potential of WRCC in mid and western of research region was higher than the other area. The evaluation results were given with continuous real number, which could reveal the temporal-spatial change characteristics of WRCC accurately. Evaluation model of WRCC based on projection pursuit model was practical and feasible for dynamic evaluation of regional WRCC.
Rain gauge improvement and the comprehensive effect of hydrological calculation on water resources protection
Authors: Qi Haiyue 
Published: April 2020

Abstract
Water is the basis of human survival. With the rapid development of the society and economy in China in the new era, people have been concerned about the efficiency of water resources utilization. Hydrological calculation dose good to water conservation and predict future circumstance of using water such as droughts or floods in agriculture, industry, and daily life. The water resources protection mentioned in this paper involves rainfall and water consumption, water quality, satisfaction with water supply time of residential water, water waste and pollution and so on. Water quantity forecasting, water quality pollution and treatment include various factors and multiple aspects. The existing natural rainfall method of hydrological stations is to use artificial or computer to read the rainfall scale on the rainwater bottle, and measure the rainfall depth within the specified time period. This method serves as the basis for subsequent hydrological calculations and provides a guarantee for further prediction of water quantity calculation.
A study on Logistics Service Quality in E-Retailing Amongst Online Shoppers in Kuala Lumpur
Authors: Revindran Magarajothi , Ragen Pavitra N.K. , Mahmud Bahri 
Published: April 2020

Abstract
Online shopping has made shopping more convenient since not only it saves time and cost, but it also gives consumers the opportunity to compare items/goods against other retailers through web-browsing. Nonetheless, there are many factors which influence the purchasing behaviour of consumers. In this study, four factors related to logistics service quality were examined in order to determine which factors impact online shoppers’ satisfaction. The four factors mentioned were timeliness, product availability, condition of the product and reverse logistics. Questionnaires related to this study were distributed to online shoppers around Kuala Lumpur area and 153 responses came back. These responses were analysed for reliability tests, Pearson Correlation Coefficient, and multiple regression analysis in SPSS software. The outcome of Cronbach’s alpha showed that the questions in the questionnaire are highly reliable. As for the correlation and regression analyses, there was a significant and positive relationship between timeliness, availability, condition and return logistics. In addition, availability had the highest correlation (r = 0.721) with online shopper’s satisfaction on the logistics service quality of the e-retailers.
Research on the Marine Energy Transportation of China
Authors: Bin Wang , Qiuping Yang 
Published: April 2020

Abstract
Firstly, the current situation of energy structure and consumption in China is analyzed. It can be seen that crude oil and natural gas are highly dependent on foreign countries. At the same time, the situation of the energy transportation is analyzed. Finally, the challenges of energy transport corridor of China are analyzed, and some policy recommendations are put forward.
Risk Assessment of Ship Navigation Collision in Inland Waterway Transportation System Based on Bayesian Method
Authors: Yang Lupeng , Xing Zhiwei , Shi Te 
Published: April 2020

Abstract
Due to the high risk and uncertainty of ship navigation, the identification, early warning and control of ship navigation risks have always been studied by scholars. In recent years, water traffic accidents have occurred frequently, resulting in an incalculable number of casualties and property losses, which makes ship navigation risk management more and more a research hotspot. Ship navigation risk is a complex system consisting of a number of risk factors. The assessment of it is a systematic project aimed at clarifying the risk factors that need to be controlled. The purpose of this paper is to use Bayesian methods to assess the risk of navigational collisions in inland waterway transport systems. In this paper, the Bayesian network and the inland waterway transportation system ship navigation collision risk simulation are combined, and the concept of the ship navigation collision risk analysis model of the Bayesian network inland waterway transportation system is proposed. This method essentially utilizes three important characteristics of Bayesian network itself—complex relation representation ability, probability uncertainty representation ability and causal reasoning ability. Through the expert experience and ship navigation collision risk simulation of inland waterway transportation system the data is learned, the knowledge contained therein is mined, and the ship navigation collision risk analysis model of the inland waterway transportation system is established, and the risk assessment analysis is carried out based on the model. Through a large number of experiments, the proposed method can better model the navigation state of the ship, quantify the navigation risk of the ship, and identify the navigation anomaly data.
Traffic bottleneck control method based on road residual capacity and flow allocation
Authors: She Hao , Xie XingSheng 
Published: April 2020

Abstract
In order to dissipate traffic congestion and bottleneck quickly, a traffic bottleneck control method based on residual capacity and flow distribution of road section is proposed. According to the standard of adjustable green letter ratio in the limit case of upstream and downstream of the bottleneck section, the capacity that the bottleneck section needs to increase is allocated to the upper and lower reaches for adjustment. According to the weight of the remaining capacity of the section, the capacity that the relevant section of the bottleneck section needs to increase is allocated to the adjacent section. The green time of non-bottleneck related phase is compressed and tested to prevent congestion transfer. The effectiveness of the algorithm is verified by simulation experiment.
The application of multi-level fuzzy comprehensive evaluation of improved analytic hierarchy process in ship safety evaluation
Authors: Li Jun , Zhu Yunsheng 
Published: April 2020

Abstract
In order to evaluate the safety status of transport ships, a multi-level fuzzy comprehensive evaluation model based on improved AHP (Analytic Hierarchy Process) is proposed. The weight of factors is determined by improved AHP, which effectively solves the problem that the judgment matrix determined by experts with strong subjectivity is difficult to be consistent, and the problem that a large number of single factor information of various risk sources is ignored is reasonably solved by using multi-level fuzzy comprehensive evaluation. This paper conducts the case study on the model. The results show that the model can evaluate the ship safety risk scientifically and reasonably, and provide reference for the ship management company and the maritime bureau to improve the management methods.
Study on the application of ultrasonic flaw detection to the monitoring of deep water steel cofferdam
Authors: Wang Minghui , Wang Bijun , Zhang Qiao 
Published: April 2020

Abstract
In order to provide a dry operation environment for the construction of high pile cap in water, the steel cofferdam must be completely sealed when working underwater. Therefore, in order to avoid leakage of cofferdam due to welding defects, high requirements are put forward for the splicing weld quality of cofferdam components. Ultrasonic testing is widely used in the detection of cofferdam welds because of its strong environmental adaptability, convenient operation, high automation level and strong data processing ability. This paper introduces the application of ultrasonic detection technology in steel cofferdam, which has achieved good results.
Effect of Wheelset Steering Stiffness Difference on the Dynamics Performance of a High-speed Railway Vehicle
Authors: Cui Tao , Wang Qi , Liu Xuegang , Chen Sijie 
Published: April 2020

Abstract
In order to study the influence of steering difference of wheelsets among one bogie on the dynamics performance of vehicle, a highly nonlinear dynamics model of the high-speed railway vehicle multi-body system is built. In numerical simulations, the combined condition of taking the upper and lower limits of the steering stiffness of wheelset is investigated, respectively. It shows that the effect of wheelset steering stiffness on the dynamic performance is not significant. Its influence on the lateral vibration of bogie frame, hunting stability of vehicle, operation safety when negotiating curved tracks and wheel wear is generally within 5%. Its influence on the maximum lateral and vertical acceleration of carbody is generally within 10% and the influence range of specific cases is within 20%. For all the numerical cases, the vehicle dynamics indexes all meet the required limit.
Pricing and Incentive Mechanism for Green Building Supply Chain with Reference price
Authors: Jiang Wen , Huang Xiaoyan , Liu Menglin 
Published: April 2020

Abstract
Based on the stackable game theory, this paper studies the pricing and incentive mechanism of a two-echelon green building supply chain consisting of a developer and a contractor. We build the profit maximization models of the developer and the contractor for three scenarios that without reference price and incentive mechanism, with the reference price but no incentive mechanism and with the reference price and incentive mechanism. Then study the optimal decisions of the developer and the contractor in different situations. The results show that introducing incentive mechanism and reference price into building supply chain pricing can effectively increase the profit of developers and contractors. In addition, it can also improve the level of green buildings and promote the sustainable development of the construction industry. Finally, the sensitivity analysis shows that the optimal pricing increases as the initial reference price increases; The optimal pricing, incentive intensity and green building level are increasing in initial green building level and decreasing in increment cost coefficient.
The advantages of C-pillars in the large space of the terminal: A case study of Beijng Daxing international airport terminal
Authors: Huihui Liu 
Published: April 2020

Abstract
This article takes the Daxing Airport terminal as an example to discuss the particular requirement of large terminals in space, energy saving and indoor environment. The interior of the Daxing terminal adopts of C-shaped pillars, which comprehensively considers many issues, making the perfect combination of space and structure, function and art.
Design Essentials of Forest Aviation Fire Airport
Authors: Rui Sun , Fang Surui , Hui Tanjian 
Published: April 2020

Abstract
As an important facility for forest fire prevention and fighting, forest aviation fire airport (hereinafter referred to as forest Airport) plays an important role in preventing and fighting forest fires and protecting forest ecosystem with its advantages of fast, efficient and less limited by geographical space. Based on the analysis of the current situation of forest airport construction, this paper puts forward the design points of forest airport, and combines with case study, in order to provide reference for similar projects.
Research and Application of Urban Road Traffic Safety Risk Evaluation Based on Regional Disaster System Theory
Authors: Cheng Lianhua , Yang Sha , Li Shugang 
Published: April 2020

Abstract
Urban road traffic risk restricts the construction of safe cities. In order to scientifically evaluate urban road traffic safety risks, the regional disaster system theory is taken into consideration, and the coupling role of various parts in the regional disaster system is fully considered, and the regional disaster safety risk assessment ideas are proposed; Analyzing the main factors affecting urban road traffic safety risks, we form a framework of urban road traffic safety risk influencing factors based on regional disaster system ideas from four aspects: hazard, disaster bodies, disaster environment and emergency response capabilities; taking a city as an example, we analyze the influencing factors of road traffic safety risks in that city, construct an index system of urban road traffic safety risk assessment, and verify the feasibility and effectiveness of the risk assessment ideas and the framework of risk influencing factors. The results show that the risk assessment ideas and the framework of risk influencing factors have certain rationality, and provide a theoretical basis for effectively preventing the occurrence of urban road traffic accidents.
Application of settlement monitoring of underground excavation station vault based on inverted rule method
Authors: Xu Yiteng , Wang Rongli , Deng Peirong , Zou Hao , Yu Zhifa , Li Lixin , Xu Feng , Li Bin 
Published: April 2020

Abstract
In the urban rail transit engineering, there is a great risk in the underground excavation construction of the existing railway station, and the monitoring accuracy of the underground excavation construction is very high. Taking station A of a project as the research object, combined with the construction situation and the structural characteristics of the station, this paper discusses the influencing factors of the vault settlement monitoring in the undercut section of the existing metro station, and formulates the vault settlement monitoring scheme in the undercut section. The feasibility of the method is verified by setting up two sets of independent elevation system and adopting the method of setting up a single station to measure the inverted ruler, and then the error control measures are given. The results show that the method can meet the accuracy requirements of the vault settlement monitoring in the underground excavation section of metro station. This method can provide some technical reference for the similar monitoring project of underground subway station.