bluuebunny/crossref_metadata_2025_split huggingface dataset:
The American West as a social-ecological region: drivers, dynamics and implications for nested social-ecological systems
Authors: Jones Kristal , Abrams Jesse , Belote R Travis , Beltrán Bray J , Brandt Jodi , Carter Neil , Castro Antonio J , Chaffin Brian C , Metcalf Alexander L , Roesch-McNally Gabrielle , Wallen Kenneth E , Williamson Matthew A 
Published: September 2019

Abstract
The American West exists in the popular imagination as a distinct region, and policies and politics often suggest that both the challenges and the opportunities for land management and human well-being across the region are relatively homogeneous. In this paper, we argue that there are key characteristics that define the West as a social-ecological region, and also that there are myriad social-ecological systems (SESs) within the region that require diverse and dynamic approaches to managing change over time. We first conceptualize aridity, topography, and a unique political economy of land as exogenous factors that persist over time and space to define the American West as a contiguous social-ecological region. We then identify a second set of characteristics that show high degrees of variation across SESs within the American West. Finally, we operationalize the relationships between regional characteristics and local dynamics through a set of case studies that exemplify specific types of SESs in the region. The results of these empirical representations of the regional and intra-regional social-ecological dynamics of the contemporary American West highlight the implications for research and management of taking a cross-scale integrated approach to address pressing social-ecological opportunities and challenges in complex adaptive systems.
The Analysis for The Importance of The Service Performance of Sluice Engineering Based on The Game Theory
Authors: Cao Qiulin , Shao Lingyu , Jiang Lulu 
Published: September 2019

Abstract
This paper mainly studies the importance of service performance of water brake engineering. From the technical feasibility, the effect reliability, the economic rationality, the construction convenience and the social environmental impact study the influence factor of the performance improvement measures. This paper establishes the evaluation system of the applicability evaluation sAystem of multi-level water sluice service, and puts forward the quantitative method of qualitative and quantitative indexes. Sequence relations and the variation coefficient method is used to the subjective and objective study on the importance evaluation index respectively, and put forward the subjective and objective weight fusion method based on the game theory, a more accurate service of sluice project importance evaluation index performance improvement measures are studied.
Algal Response Based on in situ Experiments of Nutrients Enrichment Bioassays in Lake Chaohu (China)
Authors: Fu Xuemei , Zheng Mingxia , Su Jing , Sun Yuanyuan , Zhang Rui , Wang Kun , Feng Xuehua , Ji Danfeng , Zhuo Feng 
Published: September 2019

Abstract
The algal response in relation to nutrient condition changes as well as environmental factors in Lake Chaohu (China) was investigated by in situ experiments of nutrients enrichment bioassays (NEBs) in this study. The results showed that both N and P enrichement could significantly inspire the algal growth especially in July. The highest relative algal growth coefficient compared with control obtained at TN/TP ratio of 10 reached 270% and 163% with respect to Chl-a and algal cell density, respectively. It indicated that algae blooms in Lake Chaohu are prone to occur at the TN/TP ratio around 10:1, which can be an early-warning indicator of algal blooms in Lake Chaohu. Furthermore, besides the nutrient conditions, the algal growth was significantly affected by environmental parameters such as water temperature and dissolved oxygen, which may also act as a trigger of algal blooms. This study suggested an alternative early-warning prediction method for algal blooms and provided basic information for eutrophication management scheme for Lake Chaohu.
Study on the Flow-sediment Conditions and River-bed Erosion and Deposition of Chongqing Reach after the Impoundment of Three Gorges Reservoir
Authors: Wu Huali , Jin Zhongwu , Zhou Yinjun 
Published: September 2019

Abstract
Chongqing city is the important node of golden waterway of Yangtze River. As the promotion of the Yangtze River economic belt strategy and normal operation of Three Gorges Reservoir (TGR), more and more attention has been paid to the sediment problem of Chongqing reach. After the experimental storage of 175m in the TGR, Chongqing reach is located in the fluctuating backwater area, with export boundary conditions and river-bed erosion and deposition changed. In recent years, with the water storage of cascade reservoirs in the lower reaches of Jinsha River, the condition of water inflow and sediment in this section has changed and the river-bed is adjusted accordingly. According to prototype observation data from 2003 to 2017, the flow-sediment conditions and river-bed erosion and deposition of Chongqing reach after the impoundment of TGR at different stages were comarred and analyzed. Results showed that during the initial storage period of TGR, from June 2003 to May 2008, sediment erosion and sediment was mainly related to water and sediment of upstream, with whole reach in a state of erosion and intensity was about 140.8 million m3 every year. After the impoundment of TGR, from September 2008 to October 2012, the condition of incoming water and sediment in Chongqing reach maintained original change trend and sediment erosion was mainly related to impoundment of TGR, with whole reach in a state of erosion, but intensity was small. From October 2012 to December 2017, sand from upstream of Chongqing reach reduced greatly, so river bed was drastically adjusted and scour intensity increased significantly, was about 312.2 million m3 every year. It concluded that decrease of upstream sediment is one of the important reasons for increased scour intensity in Chongqing reach.
Study on Water Distribution Scheme Across Regions
Authors: Zhou Jiahong , Han Haiqian 
Published: September 2019

Abstract
For a long time, water conservancy projects across administrative region is mostly invest in the construction by superior government, each side unconditional benefit, this is difficult to arouse the enthusiasm of benefited party to investment, and makes the government faces a great financial pressure, at the same time, it is easy to produce regional imbalance and contradiction of water resources. Finally, it will affect the resource efficiency and investment efficiency of the project. The transregional water allocation is an important basis for implementing the total water use control system in drainage basin and regions and an important content for implementing tough water management measures. This article summarily analyses the typical engineering way of water allocation, and the basic principle of the water allocation, takes Qingxi Reservoir water allocation on concrete analysis, puts forward the main factors of Qingxi Reservoir water allocation, including the area of the Qingxi river basin in each administrative regions, water resources, effect of reservoir engineering constructions, the water demand and water deficit in each administrative regions, input factors, and then puts forward proposals on water allocation. Based on two water allocation proposals, this article puts forward proportion and recommended of water allocation in each administrative region. Each administrative region should own the same right to use water resources and shoulder the same responsibility based on the same proportion, same right, same profit and same responsibility. The water allocation plan can be used as reference for Qingxi Reservoir water allocation.
Study on Influences of Water Temperature on Stress Distribution for High Arch Dam in Impounding Period
Authors: Ji Shunwen , Zheng Minsheng , Zhao Zhifang 
Published: September 2019

Abstract
Water temperature affects not only the water quality and ecological balance of the reservoir, but the temperature and stress field distribution of the high arch dam during water storage and operation management. During low water storage and initial operation, the concrete in reservoirs over 100 m deep in particular can easily crack or expand because of low temperature reservoir water. This paper studies the water temperature distribution law of the reservoir during initial storage by establishing a three-dimensional fluid dynamics model. Based on this, this paper explores the three-dimensional temperature field and stress field of the dam body during the storage period, the causes of cracking, and stress distribution in key parts of the arch dam.
Benefit Analysis of Silt Storage Dam System for Water and Sediment Interception in the Loess Plateau of China
Authors: Zhang Pan , Sun Weiying , Sun Zhanfeng 
Published: September 2019

Abstract
Silt storage dam system is an integrated system with channel engineering, flood control, sediment reduction, regulation of water resources utilization and other functions. This paper selected the Chabagou watershed as the research object. Through the comparison of runoff and sediment variation before and after the formation of the silt storage dam system under the same magnitude of the flood, analyzed the effects of soil and water conservation on reduction of runoff and sediment.
Study on Influence Factors of Water Content of Expansive Soil in Canal Slope Based on Grey Correlation Model
Authors: Liu Zuqiang , Li Mingzhe , Yan Feng , Luo Hongming 
Published: September 2019

Abstract
The change of water content of expansive soil in canal slope is very unfavorable to the stability of the slope. In order to analyze the influencing factors and laws of water cut, the relationship between water content and voltage of expansive soil, the relationship between initial water content and expansion force, initial water content and disintegration of expansive soil were tested relationship. The gray correlation model was analyzed based on the vertical displacement, water content, suction, rainfall, soil temperature and temperature data collected on the site. It is preliminarily believed that the main influencing factors of the change of water content of expansive soil in the test section are temperature, rainfall, evaporation and suction. The mechanism analysis of the grey relational model is also obtained: due to the lag of the rainfall infiltration process, the atmospheric rainfall can only penetrate into the 1.6m deep strong expansive soil after 3d, and the influence depth is less than 6.1m. The research on the influencing factors of the change of water content of expansive soil provides the basis for the development of prevention and control measures for canal slope soil in the middle route of South-to-North Moisture Diversion Project and the safe management of channel operation.
An Application of Cluster Analysis Methods to Mine Water Monitoring Data
Authors: Shi Chen 
Published: September 2019

Abstract
An optimized model of multivariate classification for the mine water of Xin Shuguang coal power plant coal mine in the north of China, has been developed. Eight samples were grouped in five distinct classes by cluster techniques (CA). The chemical composition of each sample of water is plotted on the piper’s three-line and pie chart. The Hierarchical Cluster analysis method was used to analyze the water source at the coal outlet point. These jobs will help the coal mine to better control groundwater damage.
Experimental Research on Fluctuating Pressure Characteristics of “Revetment-Protected and Non-Bottom-Protected Plunge Pool” of High Arch Dam
Authors: Yingkui Wang , Qingyi Hu , Jia Zhu , Hua Zhou , Dongbin Chen 
Published: September 2019

Abstract
In the construction progress of hydropower project, the energy dissipation security was always the focus of design and research. When the river overburden and water cushion was deep enough, the deep water cushion can be used for the energy dissipation design, and a new type - “Revetment-Protected and Non-Bottom-Protected Plunge Pool” was studied and proposed, whose stabilization was directly effected by the fluctuating pressure on the plate surface and back. The experimental research of fluctuating pressure was carried out on the 1:50 hydraulic model, and characteristic of fluctuating pressure was studied and summarized in this paper.
Modeling of the Effects of Secondary Flow on Bank Failure in a Curved Channel
Authors: Deng Chun-yan , Xia Jun-qiang , Yuan Yuan , Min Wang 
Published: September 2019

Abstract
The secondary flow is an important factor that affects the bank stabilization and morphological evolution in meandering reaches. In order to solve the problem of the bank failure in Upper Jingjiang River, the effect of the secondary flow on the river bank, the soil composition and mechanical properties were comprehensively considered, the Delft3D model and the BSTEM model were used to analyze the bank stability of the Upper Jingjiang River, and the process of bank failure was simulated. The simulation process is divided into two modes considering the secondary flow and not considering the secondary flow, and the results of the two models are compared and analyzed. The results indicated that, in both calculation modes, the bank collapse occurred during the periods of high water level and water level recession. Moreover, considering the secondary flow, the safety factor of the river bank decreases, the total collapse volume increases, and the bank shape after collapse is more in line with the actual situation.
Gaussian Radial Basis Function for Unsteady Groundwater Flow
Authors: Zheng Kehong , Li Congcong , Wang Fuzhang 
Published: September 2019

Abstract
The radial basis function (RBF) collocation methods are meshless with spectrally accurate; its approximation is an extremely powerful tool for solving various types of partial differential equations (PDEs). In this paper, the Gaussian RBF (G-RBF) collocation method is applied to solving unsteady groundwater flow governed by nonlinear elliptic PDEs. During the whole solution process, no iterations are required for a kind of nonlinear PDEs. Numerical results are compared with the well-known Kansa’s method, also namely as Multiquadrics radial basis function (MQ-RBF). The results obtained show good performance of the G-RBF as solution to unsteady groundwater flow problems.
Model Test Study on Dam Failure in Tailings Pond
Authors: Qi Qinglan , Zhang Liting , Wang Xiaogang , Zhang Shaoxiong , Lv Fei 
Published: September 2019

Abstract
This paper establishes the physical model of the prototype tailings pond using the similarity theory by taking a heightened and expanded project of tailings reservoir in Chengde, Hebei Province as an example and studies the process and mechanism of partial failure of the tailings reservoir when the drainage system fails by adopting the model test of the dam failure. The result shows that the dam damage can be divided into three categories: soil flow damage, gully damage and collapse damage. In addition, this paper analyzes the reasons for the three categories of damages.
Fully Nonlinear Analysis of the Interaction between Water and Free Floating Ship
Authors: Ma Hongwei , Zhang Zhen , Wang Jiwei , Wang Xuan 
Published: September 2019

Abstract
Based on the theory of velocity potential function, the fully nonlinear interaction between water and free floating simplified ship is studied through numerical model of fluid-solid coupling of ship-lift. The nonlinear numerical analysis of the coupling model of the water and the simplified ship body with different sizes, in which the boundary conditions included the free water surface boundary condition, the non-moving boundary condition and the water-solid coupling boundary condition. The numerical results show that the size change of the floating body affected the dynamic mechanical characteristics of the fluid-solid interaction of ship lift system, and affected the stress response of the floating simplified ship body.
Effects of high river discharge on decadal morphological evolution of the inner Yangtze Estuary
Authors: Luan Hualong , Liu Tonghuan , Yao Shiming , Lu Jinyou 
Published: September 2019

Abstract
Morphological evolution of estuaries and deltas at the decadal timescale is becoming a global issue in recent decades due to their economic and environmental significances. Present study explores the decadal morphological evolution under high river discharge and decreasing river sediment. Quantitative analysis of bathymetric data indicates that frequent river floods in the 1990s enhanced erosion of the inner estuary superimposed with river sediment decline. A process-based modeling approach (Delft3D) is applied to investigate the physical mechanisms of river flooding on morphological change. Hydrodynamic simulations indicate that the water level gradient and residual transport in the inner estuary increase with river discharge. High water level gradient occurs simultaneously with peak ebb flow, and this status can last for about 5-6 hours. This hydrodynamic condition with sufficient long period facilitates channel erosion and sandbar incision. Morphological simulations indicate that erosion along the main channels is enhanced under higher river discharge, especially in the upstream part. The enhanced erosion can be offset by the increase in sediment load. River flooding superimposed with further decreased sediment supply in the future may induce more significant modifications of channel-shoal systems within the inner Yangtze Estuary than the present.
The centrifuge experiments on influence of inclination on bearing capacity of the suction bucket
Authors: Xie Liquan , Ji Yifan 
Published: September 2019

Abstract
To study the mechanism of bearing capacity of a suction bucket, a series of centrifugal tests were designed to investigate the uplift bearing capacity, and the entire dynamic process of pore water pressure were monitored as well. The results show that with the increase of inclined degree of suction foundation, the bearing capacity of suction foundation decreases continuously, and the influence of inclination on the foundation bearing capacity is obvious.
Study on earthquake resistance behaviors of Taihe Palace by simulation
Authors: Zhou Qian , Weng Guoqiang , Xiaoli Cao 
Published: September 2019

Abstract
Taihe Palace in the Forbidden City in Beijing is the largest scale as well as highest level of Chinese ancient palace buildings. To effectively protect Chinese ancient buildings, the Taihe Palace is taken as example to study its earthquake resistance performances. Simulation means is considered for analysis. Based on typical constitutions of Taihe Palace such as freestanding column root, tenon-mortise connection between beam and column, bracket sets (tou-kung), heavy roof, filler wall and so on, its finite element model is built by ANSYS program. By modal analysis, response spectrum analysis and time-history analysis, its dynamic characteristic and seismic performances are discussed. Results show the basic frequency of Taihe Palace is 0.85 Hz, its main modes are of translation in level directions. There is little relation among main modes. Under 8 degree intensity of of frequently occurred earthquakes, internal forces of the building are within permission scopes, which means it is not destroyed. Under 8-degree intensity of rare occurred earthquakes, its maximum deformation value is within the permission scope, reflecting it does not collapse. The constitutions such as freestanding column root, tenon-mortise joint, bracket sets and so on are helpful for earthquake resistance. Thus the Taihe Palace has good aseismic performances.
Strategy research of internationalization of engineering construction standards for the Belt and Road Initiative
Authors: Chai Hua , Liu Yilin 
Published: September 2019

Abstract
To establish a comprehensive, multi-layer and multi-disciplinary network is the major aim of the “Belt and Road Initiative (BRI)”. Infrastructure connectivity is the main global trend and the basis of connection for trade and people communications, and it becomes the high priority of development of the BRI. Standards are the basic rules for connectivity, and engineering construction standards are also seen as the technical references for economic activities and general language worldwide, which play the important roles during development of the BRI. In order to explore the development strategy for internationalization of engineering construction standards, this paper firstly analyze the development status and demand of standardization of engineering construction of the countries and regions encompassed by the infrastructure corridors based on the investigations, and then, an in-depth analysis on internationalization of engineering construction standards in China is carried out. Finally, multi-level suggestions on internationalization of engineering construction standards promotion have been presented.
Notes on the meaning of adjoint wave equation derived via Lagrange multiplier approach
Authors: Xie Zhinan , Ma Wanjun , Zheng Yonglu , Zhang Xubin 
Published: September 2019

Abstract
Full-wave adjoint inversion method can be formulated via the Lagrange multiplier approach, taking the forward seismic wave equation as an additional independent constraint on synthetic wavefield. The adjoint wave equation is explained as the Lagrange multiplier where the local minimum existed, in case the model parameters are unperturbed. Such an explanation is unsatisfactory, due to the fact that the variation of synthetic wavefield equals to zero in case the model parameters are unperturbed. To avoid such a contradiction, we give a more clear explanation about the meaning of the adjoint wave equation, that it serves for converting the gradient of misfit function with respect to synthetic wavefield to the gradient of misfit function with respect to the model parameter.
Correlation between results of constant voltage RCM test and those of variable voltage RCM test
Authors: JiaQi Zhao , Yang LuFeng , Chen Zheng 
Published: September 2019

Abstract
Laboratory tests were performed on 74 sets of concrete specimens with the constant voltage RCM test and variable voltage RCM, respectively. Based on the regression analysis method, a computational model for transformation relation between test results of constant voltage RCM and those of variable voltage RCM was developed. The accuracy and applicability of the proposed model were validated by the tested data and existing model. Results show that the proposed model is applicable with higher accuracy.
Fuzzy Comprehensive Assessment for Impact on Ecology En-vironment of Construction of Extra-long Highway Tunnels in Mountain Area
Authors: Cao Peng , Fang Lin , Zheng Zhong , Zhang Zhe , Yang Feixiong 
Published: September 2019

Abstract
Construction of highway tunnels affect the original hydrogeological environment in tunnel zone, may even cause the unbalance of ecological environment, study on the influence on ecology environment of tunnels construction is therefore of great significance by adopting effective evaluation measures. Problem commonly encountered with comprehensive assessment of impact on environment is as follows, the multiple indexes, the narrow scope of application, the quantification of index with high difficult. With the support of Erlang Moutain Tunnel, six factors associated with assessment of impact on ecological environmental during tunnel construction are weighted according to the characteristic of tunnel. Determine both the subordinated function and weight of factors on the basis of fuzzy hierarchy estimation, evaluation systems on ecology environment of construction of extra-long highway tunnels in mountain area are established. Through confirmatory analysis of Erlang Moutain Tunnel, the evaluation systems obtained has good application and operability, which may provide reference to similar tunnels or underground engineering.