Comparison and Correction of Runoff Simulation Based on XGBoost and SWAT by LIANG Lisha, JIANG Xiaolei, HU Leyi, SHEN Jing, ZHANG Liping, FU Xiaolei

“…Based on the extreme gradient boosting (XGBoost) algorithm and soil and water assessment tool (SWAT) model, a runoff simulation model was constructed by using the observed hydrological data of Waizhou hydrological station in Ganjiang River Basin, and the simulation effects of the two models were compared. …”
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Water Quality of The Karedok Weir in Kecamatan Jatigede, Kabupaten Sumedang, West Java Province as a Source of Raw Water for Drinking Water by Aris Wulandani, Nurhasanah Nurhasanah, Sherly Ridhowati

“…The research tested physical, chemical and bacteriological parameters in 4 locations, namely upstream of the Cimanuk River, downstream of the Cimanuk River, Karedok Weir 1 and Karedok Weir 2. …”
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Wireless Mobile Power Communication System Based on Artificial Intelligence Algorithm by Juan Du, Mingqi Guo

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Large Uterine Fibroids in Pregnancy with Successful Caesarean Myomectomy by Edu Eyong, Okon A. Okon

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Considerations on Water Network Construction in Beijing by WANG Tao, LI Liqin, WU Xia, WANG Yan

“…Functionally, it played a comprehensive role in flood control and disaster reduction in river basins, water ecological protection, multiple water source protection, water supply and drainage safety guarantee, offering ideas and work suggestions for Beijing water network architecture and providing a reference for the construction of water network projects in large and medium-sized cities in the northern region.…”
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Unilateral Subconjunctival and Retrobulbar Hemorrhage Secondary to Brodifacoum Toxicity in a Dog by Sonia E. Kuhn, Diane V. H. Hendrix

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SEASONAL VARIATION OF IN SITU PHYTOPLANKTON PHOTOSYNTHETIC PROPERTIES IN NHA TRANG BAY by Thi Minh Hue Tran, Nhu Hai Doan

“…Seasonal and spatial variation of photosynthetic efficiency along the transect from the river mouth to the open ocean reflected the impact of river inputs on phytoplankton communities. …”
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Ecological Sensitivity Analysis of Beihai City Based on GIS and RS by LI Xiaorong, XIE Yuting, LIU Ping

“…In this paper,five factors influencing ecological sensitivity were selected by using GIS and RS technologies,including land use/cover change (LUCC),normalized difference vegetation index (NDVI),elevation,aspect,and water buffer in land area of Beihai City,and the ecological sensitivity evaluation of single factor in the study area was carried out by using the ecological factor scoring method.The weighted superposition method was used to comprehensively evaluate the ecological sensitivity,and the study area was divided into the non-sensitive area,slightly sensitive area,moderately sensitive area,and highly sensitive area.The results show that the ecological sensitivity of the study area decreases from east to west and from north to south.The sum of the non-sensitive area and the slightly sensitive area is 64.30%,and the two areas are mainly distributed in the southwest,with an elevation below 30 m and relatively underdeveloped river networks.The moderately sensitive area accounts for 29.88% and is mainly distributed in Hepu County;the highly sensitive area accounts for 5.82% and is mainly distributed in the northeast mountainous area.The research results can provide a theoretical basis for ecological environment protection,green development,and rational land use planning in Beihai City.…”
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Delineation of groundwater recharge zones in lateritic terrains using geospatial techniques by A. Ajayakumar, Rajesh Reghunath

“…Abstract This study attempts to narrow down the groundwater potential zones in a river basin where laterites form the major aquifer rock. …”
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Simulation Analysis of Rainstorm Waterlogging in Shenzhen Dakonggang Area Based on MIKE FLOOD by FANG Yuming, MA Xumin, LIN Kairong, OUYANG Jiana, GUO Weijian, GUO Jing

“…Under different rainfall scenarios,the high-risk areas of waterlogging are mainly concentrated in the central region of the study area and near the river bank. In addition,according to the measured tide level of the "8·29" rainstorm,the simulation can be obtained:The total water accumulation area of the waterlogging point in the Dakonggang area with a depth of more than 15 cm is about 7.11 hm². …”
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Re-evaluation of Underflow Energy Dissipation Effect Based on AHP-fuzzy Comprehensive Evaluation Method by LIU Jialin, QIU Yong, ZHOU Xinyu, PU Jinbing, JIANG Yujia

“…The effects of current underflow energy dissipation are basically evaluated by a single indicator (energy dissipation rate) based on engineering safety.To better adapt to the construction needs of ecological water conservancy,this paper comprehensively analyzes all relevant factors of underflow energy dissipation and conducts the qualitative and quantitative analysis of multiple indicators by the application of hierarchical analysis and fuzzy comprehensive evaluation.It sets two criterion layers of main characteristic indicators (energy loss,aeration concentration of water body after energy dissipation,fluctuation pressure,and tail water flow pattern) and minor characteristic indexes (anti-impact flow velocity of downstream,Froude number of pre-jump section, and inundation degree).Then,it calculates the corresponding weights and degree of membership respectively to obtain the re-evaluation result of the energy dissipation effect of a grid underflow energy dissipater being 83.3 points (B grade).The results show that the comprehensive evaluation based on multiple factors can better take into account the ecological requirements and other influencing factors of the downstream river on the premise of meeting engineering safety.…”
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General Design Layout of Datengxia Ship Lock by LI Yawen, CHEN Guihua

“…The Datengxia hydro project is a key project to open the 100-million-ton golden waterway of the Xijiang River,with high navigation requirements for the dam-site reach and a huge freight volume.The general design layout of the navigation structure ship lock plays a vital role in the layout scheme,freight volume,operation management,and investment of the whole hydro project.For the general design of the ship lock, the position of the ship lock is first selected according to the topographical and geological conditions of the project area and the layout requirements of the hydro project.On this basis,this study designs the lock head,lock chamber,water conveyance system,upstream and downstream approach channels,entrance area and connecting section,anchorage to be locked,etc.Additionally,the structural dimensions of the water conveyance system and rectification measures in the entrance area are optimized according to the model test results.The Datengxia ship lock has reached the highest level of ship locks built at home and abroad in terms of the scale,water head,water-level variation amplitude conditions,and hydraulic index requirements.Its general layout can provide a certain reference for the design of large-scale and high water-head ship locks.…”
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Risk Analysis of Waterlogging under Combination of Short-duration Heavy Rainfall and Tidal Level in Foshan City by YANG Fan, XU Liang, HAN Jing

“…In orderto explore the probability of waterlogging risks in a specific city and provide scientific basisfor the study of urban waterlogging risks in the Pearl River Delta region, from the perspective ofthe causes of waterlogging, this paper takes Foshan as a typical research area, systematicallyanalyzes the probability of encountering storms and high tide levels, constructs a probabilisticmodel for the risk of encounter of rainstorm and high tidal level in urban area of Foshan, andquantitatively evaluates the encounter probabilities and change trend under multiple combinationsof rainstrom and tidal levels in urban area of Foshan by the time-series trend analysis, stormfrequency change statistics, sequence wavelet analysis, and Copula function. …”
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Análise geossistêmica e quantificação de perda de solo da bacia do Rio Mutum-Paraná (RO) by Michel Watanabe, Fabiano Antonio de Oliveira, Dorisvalder Dias Nunes, Tatiane Emilio Checchia

“…The present study aims to assess the soil loss due erosion from Mutum-Parana river watershed in Rondonia, in order to contribute for a better planning and management at the area, since it is under direct influence of hydroeletric projects from the upper part of Madeira river (RO). …”
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Cause Analysis and Control Measures of Waterlogging in Shanghai Zoo Based on MIKE 21 by ZHOU Jing, WANG Huan

“…In order to analyze the cause of waterlogging after the drainage system of Shanghai Zoo reached the standard and explore the best control measures,data analysis and field investigation were carried out,and it was preliminarily determined that the waterlogging in the zoo was related to the poor drainage of the water system and the insufficient drainage pumping station.MIKE 21 was used to build a hydrodynamic model of the water system in the zoo,and the changes in the hydrological characteristic values of the water system under the current drainage condition were simulated and studied.It is concluded that the root cause of waterlogging in the zoo is that the drainage path is blocked,and the drainage pumping station has an insufficient scale and unreasonable layout.In order to promote drainage and remove waterlogging,the water system optimization and waterlogging facility renovation plans were proposed,and the engineering effect of each plan was simulated.Through the comparison of indicators such as drainage rate,drainage time,and maximum drainage time difference in different regions,the effect of each plan in promoting drainage and removing waterlogging was determined.In view of the engineering economy,the plan of expanding culverts and moving some culverts to the river was determined as the best,and the drainage layout was adjusted to achieve the best control effect under the specific investment.…”
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Les eaux comme frontières dans les Enfers gréco-romains, d’après L’Odyssée d’Homère, la Théogonie d’Hésiode, La République de Platon et L’Énéide de Virgile by Emilia Ndiaye

“…Waters are everywhere in the Ancient Netherworld, at the entrance and inside as several rivers organize the topography into various separate spaces. …”
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Geospatial Assessment of Floods in Western Nepal by Sugam Subedi, Gandhiv Kafle, Shankar Tripathi

“…It was found that the flood had created a negligible impact on the forest, high impact on the river itself, and average impact on land. 0.13% of forests, 17.38% of land, and 82.48% of river bodies were affected by the flood of 2013. …”
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Study of Shear Capacity of Jointed Rock Mass with Prestressed Anchor Bolt by Yufei Zhao, Hongtao Zhang, Yong Nie

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Analysis of Hot Spots in Watershed Runoff Generation and Concentration Based on Bibliometrics by HU Jinhui, SUN Yingna, WANG Ning, LI Zan

“…At present,the CiteSpace is rarely applied in the field of hydrology.Compared with other similar applications,this software can analyze data easily and generate visual map flexibly.Based on that,using CiteSpace to analyze the hot spots of watershed runoff generation and concentration can provide some references to scholars.Through the CNKI database,1 046 journals and academic papers from 1999 to 2020 are retrieved with “runoff generation and concentration”,“model” and “flood” as the subject terms.Based on the analysis functions of CNKI and CiteSpace,the results show that:among the Keyword co-occurrence map,the domestic hot spots in the field of watershed runoff generation and concentration include “Flood Forecast”,“Distributed Hydrological Model”,“Xin'an River Model”,“Urbanization”,“SWMM Model”,“Underlying Surface”,etc.By using the clustering function,the relevant research can be divided into “Flood Forecast”,“Control of Urban Flood”,“Geographic Information System”,and “Flood Disaster”.According to the clustering timeline diagram,“Simulation of Runoff Generation and Concentration in Hydrological Cycle” and “Simulation of Urban Flood Control Construction by Low-impact Development Concepts and SWMM Model” are current hot spots.Finally,detailed analysis related to those two hot spots are presented.…”
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Analysis of Deformation Characteristics of Dikes on Deep Soft Soil Foundations by WU Juan, ZHANG Ming, LI Yansong, HOU Weijian

“…The deformation of dikes directly affects the safety of dikes,especially for dikes on deep soft soil foundations,whose deformation is often large,and thus it is often used as the main evaluation index of dike safety.By the reconstruction project of a dike on soft soil foundations,the finite element numerical analysis model for the typical section of the dike is built,and the deformation of the dike during the completion period and under the characteristic water levels is calculated,with emphasis on analyzing the influence of the water level changes and pressure platform on the deformation characteristics of the dike.The results indicate that the dike settlement is severe,and the severe settlement area is mainly concentrated near the center of the surface layer of the dike foundation,and the soft foundation has a significant impact on the dike settlement.The horizontal deformation is relatively small,mainly concentrated in soft foundations,and the horizontal deformation of the dike body is slight.The pressure platform on the waterside slope and the water level changes near a river have a great influence on the horizontal deformation of the dike.On the whole,the dike design scheme is reasonable,and it is suggested to reserve a sufficient settlement amount at the top of the dike.…”
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