Effect of the Subsurface Drain Parameters on Water-salt Transport Based on HYDRUS-2D by LIU Luyao, ZHANG Jinlong, ZHANG Kai, JIA Lin, ZHANG Di, NIE Axiu

“…In order to study the effect of the subsurface drain parameters on water-salt transport,this paper performs the field test in typical experimental area selected from Binhai New Area of Tianjin,China,calibrates and verifies the simulation effect of HYDRUS-2D by experimental data,and simulates the water-salt transport under different subsurface drain parameters by the validated model.The simulation results show that:HYDRUS-2D can well simulate water-salt transport of soil under the condition of subsurface drainage.When the depth of subsurface drains is kept unchanged,the larger the subsurface drains is spaced,the higher the water and salt are contained in the soil after leaching.When the spacing of subsurface drains is kept unchanged,the deeper the subsurface drains are,the lower the water and salt are contained in the soil after leaching.Among the 12 simulated subsurface drain scenarios,under the combined parameters of 140 cm depth (maximum) and 300 cm spacing (minimum),the salt of soil profile is 0.47~7.81 g/kg (minimum).Therefore,when the subsurface drain technology is applied to the improvement of saline-alkali soil,it is necessary to reduce the spacing of the subsurface drains or increase the depth of the subsurface drains to improve the leaching effect.…”
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Study on Flood Simulation and Its Real-time Correction of Qinhuai River Basin Based on Grid-Xin'anjiang Model by SUN Wenyu, WANG Rong, YAO Cheng, HE Jian, LI Zhijia, GONG Junfu, HUANG Pengnian

“…There are many small and medium-sized rivers in China,with frequent floods and serious disasters,which are the key weak links in flood prevention and control.Qinhuai River system is one of the most important water bodies in Nanjing,and the possible flood disaster in the flood season poses a threat to the life and property safety in the whole city.Taking Qianhan Village in Qinhuai River basin as the research object,this paper conducts the flood simulation through the Xin'anjiang model and Grid-Xin'anjiang model,and corrects it in real time by the KNN method and feedback method,so as to realize fast and accurate flood forecasting calculation.The results show that without real-time correction,the simulation accuracy of the Grid-Xin'anjiang model is slightly better than that of the Xin'anjiang model,and the simulation results of the two models are generally good.After real-time correction,the simulation results of the Xin'anjiang model and the Grid-Xin'anjiang model are improved obviously,which can provide an important basis for the decision of flood control and disaster reduction in the Qinhuai River Basin.…”
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Research on Building Extraction Based on Object-oriented CART Classification Algorithm and GF-2 Satellite Images by HUANG Wei, CUI Zhimei, HUANMG Zhidu, WU Rongrong

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STRATEGY FOR THE PREVENTION OF WORLD WARS IDEAL POLITICAL MAP OF THE WORLD, FROM 195 TO 21 MEGA-FEDERATIONS by Luca DIACONESCU, Angelica NECȘULEA

“…The concept of megastates, economically and nationally stable, such as: Brazil, the United States, China, Russia, India or the European Union currently existing, can expand worldwide, materializing in 21 countries with large areas and large populations, encouraging globalization, trade, free movement but above all an optimal framework of the balance of power.…”
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Spectrum access control for cognitive internet of things users based on enhanced weighted centroid localization by Bin SHEN, Yinbo LI, Xiaowei LIANG

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Stratification of the Low-Latitude and Near-Equatorial F2 Layer, Topside Ionization Ledge, and F3 Layer: What We Know about This? A Review by M. V. Klimenko, B. Zhao, A. T. Karpachev, V. V. Klimenko

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Modern Diplomacy and the Changing Nature of International Politics in the 21st Century by Marc E. Oosthuizen

“…[ii] To further scrutinise the phenomena driving change and influencing modern diplomacy, the research utilises specific and relevant international political issues such as post-Cold War international politics, the hegemonic decline of the US, the rise of China, the problems in the Middle East, nuclear disarmament, climate change, Globalisation, the Fourth Industrial Revolution (4IR), the COVID-19 pandemic and diplomatic inflation.   1) Haynes 2011, 5-6, 8; Stern 2015; Spies 2019a, 42-43. …”
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The Issues of the Sixth Dalai Lama and the Transformation of Qing Information System on Tibet by Ling-Wei Kung

“…The Sixth Dalai Lama’s death embodied the monumental transition that significantly shaped the destiny of Tibet, China, and Inner Asia in the following three centuries. …”
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Composite Differential Search Algorithm by Bo Liu

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Seismic Performance of Precast Concrete Column-to-Column Joint Using the Steel Plate Hoop and Bolts Connection by Dawei Yuan, Qi Shang, Chun Han, Jianpeng Sun, Qingning Li

“…The traditional precast concrete column-to-column connections are widely used in the prefabricated concrete frame structures in China. However, many studies on the column-to-column joints have demonstrated their complex forms and poor construction efficiency. …”
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A Review of Coal Fly Ash Utilization: Environmental, Energy, and Material Assessment by Monika Kuźnia

“…Despite policies in the European Union aimed at reducing coal consumption, there are countries in the world where coal use continues to rise (China and India are the largest consumers of coal). …”
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A new statistical approach with simulation study: Its implementations in management sciences and reliability by Zhidong Liang

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Diosgenin: Recent Highlights on Pharmacology and Analytical Methodology by Mafalda Jesus, Ana P. J. Martins, Eugenia Gallardo, Samuel Silvestre

“…Diosgenin, a steroidal sapogenin, occurs abundantly in plants such as Dioscorea alata, Smilax China, and Trigonella foenum graecum. This bioactive phytochemical not only is used as an important starting material for the preparation of several steroidal drugs in the pharmaceutical industry, but has revealed also high potential and interest in the treatment of various types of disorders such as cancer, hypercholesterolemia, inflammation, and several types of infections. …”
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Failure Mechanism of Anti-Inclined Karst Slope Induced by Underground Multiseam Mining by Nanyun Wang, Zuliang Zhong, Xinrong Liu, Guofu Gao

“…There occurred a lot of catastrophic landslides in Southwest China karst areas in recent years. This study numerically simulated the failure process of Pusa landslide by distinct element method (UDEC). …”
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Offloading strategy with edge optimization of time delay and energy consumption in integrated satellite-terrestrial relay network by Meinan ZHANG, Mingqi ZHANG, Fei DING, Hengheng ZHUANG, Hairong MA

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Flow of SWCNT and MWCNT based hybrid nanofluids in a semi-circular enclosure with corrugated wall by Sohail Nadeem, Ayesha Siddiqua, Jehad Alzabut

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Weighted mixed regression localization method based on three-dimensional Voronoi diagram division by Fenfang LI, Xiaochao DANG, Zhanjun HAO

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A Review of Sustaining Sanitation Services Approach by Muntaha Saad, Mufid al-hadithi, Thaer Jasim, Aymen Yousif, Mohamed Freeshah

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The Application Prospects of Event Data in Traffic Flow Prediction by Chen Haochi, Guo Zixin, Jiang Zicong

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Application of Pedrail Powered Support on Strata Control in Short-Wall Coal Mining by Jingong Ma, Yongcheng Ding, Hongwei Zhang

“…In this study, the role of the pedrail powered (PP) support produced in China in the Wongawilli short-wall mining was explored, and the process from its import and introduction to its localization and use effect were detailed. …”
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